阅读说明：本技术 一种安全可靠的电动门及使用其的控制方法 (Safe and reliable electric door and control method using same ) 是由 方鑫 周瑞怡 金国建 于 2021-09-23 设计创作，主要内容包括：本发明公开了一种安全可靠的电动门及使用其的控制方法,属于电动门技术领域,电动门的隔离变压器T0的初级线圈与市电电连接,隔离变压器T0的次级线圈与交流接触器的输入端电连接,交流接触器的输出端与驱动模块的输入端电连接；漏电检测模块的输入端与隔离变压器T0的次级线圈电连接；防夹检测模块设置于电动门本体；处理运行模块的输入端分别与漏电检测模块的输出端以及防夹检测模块的输出端电连接,处理运行模块的输出端与交流接触器的控制端电连接。控制方法包括漏电检测步骤、防夹检测步骤和处理运行步骤。本发明解决了驱动线路漏电容易造成触电事故,以及电动门开门或关门时容易夹伤人员,对人身安全造成威胁的问题。(The invention discloses a safe and reliable electric door and a control method using the same, belonging to the technical field of electric doors.A primary coil of an isolation transformer T0 of the electric door is electrically connected with a mains supply, a secondary coil of an isolation transformer T0 is electrically connected with an input end of an alternating current contactor, and an output end of the alternating current contactor is electrically connected with an input end of a driving module; the input end of the leakage detection module is electrically connected with the secondary coil of the isolation transformer T0; the anti-pinch detection module is arranged on the electric door body; the input end of the processing operation module is electrically connected with the output end of the leakage detection module and the output end of the anti-pinch detection module respectively, and the output end of the processing operation module is electrically connected with the control end of the alternating current contactor. The control method comprises a leakage detection step, an anti-pinch detection step and a processing operation step. The invention solves the problems that the electric shock accident is easily caused by the electric leakage of the driving circuit, and the personal safety is threatened because the personnel are easily injured by being pinched when the electric door is opened or closed.)

1. A safe and reliable electrically operated door is characterized in that: the intelligent anti-pinch electric door comprises an electric door body, an isolation transformer T0, an alternating current contactor, a driving module, an electric leakage detection module, an anti-pinch detection module and a processing operation module;

the primary coil of the isolation transformer T0 is electrically connected with a mains supply, the secondary coil of the isolation transformer T0 is electrically connected with the input end of the alternating current contactor, the output end of the alternating current contactor is electrically connected with the input end of the driving module, and the driving module is used for driving the electric door body to move;

the input end of the electric leakage detection module is electrically connected with the secondary coil of the isolation transformer T0, and the electric leakage detection module is used for collecting the current LI of a phase line and the current NI of a zero line in an operation circuit of the electrically operated gate, analyzing and processing the current LI of the phase line to obtain a first electric leakage current, and analyzing and processing the current NI of the zero line to obtain a second electric leakage current;

the anti-pinch detection module is arranged on the electric door body, is used for collecting real-time environment data in a moving range of the electric door when the electric door is opened or closed, is also used for judging whether an object enters the moving range of the electric door according to the real-time environment data, and is also used for sending an anti-pinch instruction to the processing operation module when the object enters the moving range of the electric door;

the input end of the processing operation module is electrically connected with the output end of the electric leakage detection module and the output end of the anti-pinch detection module respectively, the output end of the processing operation module is electrically connected with the control end of the alternating current contactor, the processing operation module is used for comparing the first leakage current and the second leakage current with a preset safe current threshold value respectively, and is also used for controlling the alternating current contactor to disconnect a circuit when the first leakage current and/or the second leakage current exceed the safe current threshold value, so that the driving module is powered off; and the processing operation module is also used for receiving the anti-pinch instruction and controlling the alternating current contactor to disconnect the circuit, so that the driving module is powered off.

2. A safe and reliable electrically powered door as claimed in claim 1, wherein: the electric leakage detection module comprises a single-phase detection circuit and a zero line detection circuit; the single-phase detection circuit comprises a resistor R1, a resistor R2, a resistor R3, a resistor R4, a nonpolar capacitor C1, a polar capacitor C2, a nonpolar capacitor C3, a bidirectional trigger diode D1, a diode D2, a diode D3, a triode Q1 and a linear optocoupler U1; the zero line detection circuit comprises a resistor R5, a resistor R6, a resistor R7, a resistor R8, a nonpolar capacitor C4, a polar capacitor C5, a nonpolar capacitor C6, a diode D4, a bidirectional trigger diode D5, a diode D6, a triode Q2 and a linear optocoupler U2; the input end of the electric leakage detection module is divided into a first input end Lint and a second input end Nint, the first input end Lint is used for collecting current LI of a phase line, and the second input end Nint is used for collecting current NI of a zero line;

the first input end Lint is electrically connected with one end of the resistor R1, the other end of the resistor R1 is electrically connected with one end of the diac D1, one end of the nonpolar capacitor C1, the anode of the polar capacitor C2 and one end of the resistor R2, the other end of the resistor R2 is electrically connected with the anode of the light emitting diode of the linear optocoupler U1, the other end of the diac D1, the other end of the nonpolar capacitor C1 and the cathode of the polar capacitor C2 are all electrically connected with the cathode of the light emitting diode of the linear optocoupler U1, the collector E1 of the phototransistor of the linear optocoupler U1 is electrically connected with the signal input end of the processing operation module, and the emitter F1 of the phototransistor of the linear optocoupler U1 is grounded; the second input terminal Nint is electrically connected to a negative electrode of the diode D3, an anode of the diode D3 is electrically connected to one end of the nonpolar capacitor C3, one end of the resistor R3, and an emitter of the transistor Q1, respectively, the other end of the nonpolar capacitor C3, the other end of the resistor R3, and a base of the transistor Q1 are electrically connected to one end of the resistor R4, the other end of the resistor R4 is electrically connected to a negative electrode of the diode D2, and an anode of the diode D2 is electrically connected to the ground PE; the collector of the triode Q1 is electrically connected with the cathode of the light emitting diode of the linear optocoupler U1;

the second input end Nint is electrically connected to one end of the resistor R6, the other end of the resistor R6 is electrically connected to one end of the diac D5, one end of the nonpolar capacitor C4, the anode of the polar capacitor C5 and one end of the resistor R7, the other end of the resistor R7 is electrically connected to the anode of the led of the linear optocoupler U2, the other end of the diac D5, the other end of the nonpolar capacitor C4 and the cathode of the polar capacitor C5 are electrically connected to the cathode of the led of the linear optocoupler U2, the collector E2 of the phototransistor of the linear optocoupler U2 is electrically connected to the signal input end of the processing operation module, and the emission set F2 of the phototransistor of the linear optocoupler U2 is connected to the ground GND line; the first input end Lint is electrically connected with a cathode of the diode D6, an anode of the diode D6 is electrically connected with one end of the nonpolar capacitor C6, one end of the resistor R8 and an emitter of the triode Q2, respectively, the other end of the nonpolar capacitor C6, the other end of the resistor R8 and a base of the triode Q2 are electrically connected with one end of the resistor R5, the other end of the resistor R5 is electrically connected with a cathode of the diode D4, and an anode of the diode D4 is electrically connected with a ground PE; and the collector electrode of the triode Q2 is electrically connected with the negative electrode of the light emitting diode of the linear optocoupler U2.

3. A safe and reliable electrically powered door as claimed in claim 2, wherein: the anti-pinch detection module comprises an anti-pinch rod and trigger mechanisms connected to two ends of the anti-pinch rod; the triggering mechanism is arranged at the end part of the electric door body, and the anti-clamping rod is vertically arranged in parallel with the shell of the electric door body; prevent pressing from both sides detection module and be used for when preventing that the clamping lever receives the striking, trigger mechanism produces and prevents pressing from both sides the instruction.

4. A safe and reliable electrically powered door as claimed in claim 3, wherein: the electronic door comprises a power door body, a video identification module and a control module, wherein the video identification module is used for acquiring images around the power door body and identifying living bodies, vehicles and the power door body in the images, and the capture range of the video identification module follows the power door body; the electric door is also used for generating a stopping instruction when the living bodies and/or vehicles are identified to exist around the electric door body in the process of closing the door;

the output end of the video identification module is electrically connected with the input end of the processing operation module, and the processing operation module is used for controlling the alternating current contactor to disconnect a line when receiving the stopping instruction and powering off the driving module.

5. A safe and reliable electrically operated door as claimed in claim 4, wherein: the voltage-current balance detection module is used for collecting the current LI of the phase line, the voltage LU between the phase lines, the current NI of the zero line and the voltage NU between the zero line and the phase line, calculating the balance coefficient of the phase line and the zero line in a power supply line according to the current LI of the phase line and the current NI of the zero line, and generating an alarm instruction when the current LI of the phase line exceeds a preset phase line current alarm threshold value, the voltage LU between the phase lines exceeds a preset inter-phase voltage alarm threshold value, the current NI of the zero line exceeds a preset zero line current threshold value, and the voltage NU between the zero line and the phase line exceeds a preset zero phase voltage alarm threshold value and/or the balance coefficient exceeds a preset balance alarm threshold value;

the input end of the processing operation module is electrically connected with the output end of the voltage and current balance detection module, and the processing operation module is used for controlling the alternating current contactor to disconnect a line when receiving the alarm instruction, so that the driving module is powered off.

6. A method for controlling a power door using the safe and reliable power door of claim 5, comprising the steps of:

and electric leakage detection:

a1, collecting the current LI of a phase line and the current NI of a zero line in an operation circuit of the electrically operated gate;

a2, analyzing and processing the current LI of the phase line to generate a first leakage current when the phase line of the circuit leaks electricity, and/or analyzing and processing the current NI of the zero line to generate a second leakage current when the zero line of the circuit leaks electricity;

anti-pinch detection:

acquiring real-time environment data in the moving range of the electric door when the electric door is opened or closed, and judging whether an object enters the moving range of the electric door according to the real-time environment data; generating an anti-pinch instruction when an object enters the moving range of the electric door;

the processing and running steps are as follows:

the processing operation module compares the first leakage current and/or the second leakage current with a preset safe current threshold value respectively; when the first leakage current and/or the second leakage current exceed the safety current threshold, controlling the alternating current contactor to disconnect a line, and powering off the driving module;

when the processing operation module receives the anti-pinch instruction, the alternating current contactor is controlled to disconnect a circuit, and the driving module is powered off.

7. The method for controlling an electric door according to claim 6, wherein the step A2 is specifically as follows: when the phase line of the operating line has a leakage problem, the current of the phase line or the live line flows to the ground line PE through the leakage part, the current of the ground line PE drives the triode Q1 to be conducted, a loop is formed between the first input end Lint and the second input end Nint which are electrically connected with the secondary coil of the isolation transformer T0, the linear optocoupler U1 is driven to work, and the collector electrode E1 of the phototriode of the linear optocoupler U1 forms a first leakage current;

when the zero line of the operating line has a leakage problem, the current of the zero line flows to the ground wire PE through the leakage position, the current of the ground wire PE drives the triode Q2 to be conducted, a loop is formed between the first input end Lint and the second input end Nint which are electrically connected with the secondary coil of the isolation transformer T0, the linear optocoupler U2 is driven to work, and the collector E2 of the phototriode of the linear optocoupler U2 forms second leakage current.

8. The method of claim 7, wherein the anti-pinch detection step comprises: the electric door is opened or closed, and when the clamping prevention rod is impacted, the triggering mechanism generates an anti-clamping instruction.

9. The control method of an electric door according to claim 8, wherein: the method further comprises a video identification step, wherein the video identification step comprises the following steps:

acquiring an image around the electric door body;

identifying a living body, a vehicle and the power door body in the image, wherein a capture range of the video identification module follows the power door body;

generating a stopping instruction when the living bodies and/or vehicles are identified to exist around the electric door body in the process of closing the door;

and the processing and running step further comprises the step of controlling the alternating current contactor to disconnect a line and power off the driving module when the processing and running module receives a suspension instruction.

10. A method of controlling an electric door according to claim 9, wherein: the method also comprises a voltage current balance detection step, wherein the voltage current balance detection step comprises the following steps:

collecting the current LI of the phase lines, the voltage LU between the phase lines, the current NI of the zero line and the voltage NU between the zero line and the phase lines;

calculating the balance coefficient of the phase line and the zero line in the power supply line according to the current LI of the phase line and the current NI of the zero line;

when the current LI of the phase line exceeds a preset phase line current alarm threshold value, the voltage LU between the phase lines exceeds a preset inter-phase voltage alarm threshold value, the current NI of the zero line exceeds a preset zero line current threshold value, the voltage NU between the zero line and the phase line exceeds a preset zero-phase voltage alarm threshold value or the balance coefficient exceeds a preset balance alarm threshold value, generating an alarm instruction;

and the processing operation step also comprises the step of controlling the alternating current contactor to disconnect a line when the processing operation module receives an alarm instruction, so that the driving module is powered off.

Technical Field

The invention relates to the technical field of electric doors, in particular to a safe and reliable electric door and a control method using the same.

Background

At present, the electrically operated gate is favored by people by realizing the opening and closing of the gate, easy control and rich in changing shape through one key, and the electrically operated gate consists of a machine head and a gate row, is widely applied to places such as organs, schools, enterprises, stadiums and the like, and can effectively manage the entering and exiting vehicles and people. Because the electrically operated gate sets up in the open air, can meet unexpected incident unavoidably, causes accident very easily and threatens personal safety.

For example, when the power line of the power door is abnormal, once the power line is not protected to avoid risks, the power equipment in the power door is prone to failure, even the power door is powered on, and serious safety accidents and even life risks are easily caused to passing personnel. The existing power supply system of the electric door generally uses an air switch to achieve the function of avoiding the electric leakage risk, but the action of the air switch is insensitive, and when an accident occurs, the accident may occur because the circuit cannot be timely disconnected due to the untimely action of the air switch. For another example, in the process of opening or closing the door of the electric door, if a person approaches to an area where the door is opened or closed electrically and a doorkeeper does not find the person in time, the electric door can continue to open or close the door, and the person can be damaged.

Disclosure of Invention

In view of the above-mentioned drawbacks, an object of the present invention is to provide a safe and reliable electric door, which solves the problems that electric shock accidents are easily caused by electric leakage of a driving circuit, and personal safety is threatened by easily clamping people when the electric door is opened or closed.

In view of the above-mentioned drawbacks, another objective of the present invention is to provide a method for controlling an electric door, which solves the problems that an electric shock accident is easily caused by the leakage of a driving circuit, and the personal safety is threatened by the electric door due to the easy injury of people when the electric door is opened or closed.

In order to achieve the purpose, the invention adopts the following technical scheme: a safe and reliable electric door comprises an electric door body, an isolation transformer T0, an alternating current contactor, a driving module, a leakage detection module, an anti-pinch detection module and a processing operation module;

the primary coil of the isolation transformer T0 is electrically connected with a mains supply, the secondary coil of the isolation transformer T0 is electrically connected with the input end of the alternating current contactor, the output end of the alternating current contactor is electrically connected with the input end of the driving module, and the driving module is used for driving the electric door body to move;

the input end of the electric leakage detection module is electrically connected with the secondary coil of the isolation transformer T0, and the electric leakage detection module is used for collecting the current LI of a phase line and the current NI of a zero line in an operation circuit of the electrically operated gate, analyzing and processing the current LI of the phase line to obtain a first electric leakage current, and analyzing and processing the current NI of the zero line to obtain a second electric leakage current;

the anti-pinch detection module is arranged on the electric door body, is used for collecting real-time environment data in a moving range of the electric door when the electric door is opened or closed, is also used for judging whether an object enters the moving range of the electric door according to the real-time environment data, and is also used for sending an anti-pinch instruction to the processing operation module when the object enters the moving range of the electric door;

the input end of the processing operation module is electrically connected with the output end of the electric leakage detection module and the output end of the anti-pinch detection module respectively, the output end of the processing operation module is electrically connected with the control end of the alternating current contactor, the processing operation module is used for comparing the first leakage current and the second leakage current with a preset safe current threshold value respectively, and is also used for controlling the alternating current contactor to disconnect a circuit when the first leakage current and/or the second leakage current exceed the safe current threshold value, so that the driving module is powered off; and the processing operation module is also used for receiving the anti-pinch instruction and controlling the alternating current contactor to disconnect the circuit, so that the driving module is powered off.

It is worth to say that, the electric leakage detection module comprises a single-phase detection circuit and a zero line detection circuit; the single-phase detection circuit comprises a resistor R1, a resistor R2, a resistor R3, a resistor R4, a nonpolar capacitor C1, a polar capacitor C2, a nonpolar capacitor C3, a bidirectional trigger diode D1, a diode D2, a diode D3, a triode Q1 and a linear optocoupler U1; the zero line detection circuit comprises a resistor R5, a resistor R6, a resistor R7, a resistor R8, a nonpolar capacitor C4, a polar capacitor C5, a nonpolar capacitor C6, a diode D4, a bidirectional trigger diode D5, a diode D6, a triode Q2 and a linear optocoupler U2; the input end of the electric leakage detection module is divided into a first input end Lint and a second input end Nint, the first input end Lint is used for collecting current LI of a phase line, and the second input end Nint is used for collecting current NI of a zero line;

the first input end Lint is electrically connected with one end of the resistor R1, the other end of the resistor R1 is electrically connected with one end of the diac D1, one end of the nonpolar capacitor C1, the anode of the polar capacitor C2 and one end of the resistor R2, the other end of the resistor R2 is electrically connected with the anode of the light emitting diode of the linear optocoupler U1, the other end of the diac D1, the other end of the nonpolar capacitor C1 and the cathode of the polar capacitor C2 are all electrically connected with the cathode of the light emitting diode of the linear optocoupler U1, the collector E1 of the phototransistor of the linear optocoupler U1 is electrically connected with the signal input end of the processing operation module, and the emitter F1 of the phototransistor of the linear optocoupler U1 is grounded; the second input terminal Nint is electrically connected to a negative electrode of the diode D3, an anode of the diode D3 is electrically connected to one end of the nonpolar capacitor C3, one end of the resistor R3, and an emitter of the transistor Q1, respectively, the other end of the nonpolar capacitor C3, the other end of the resistor R3, and a base of the transistor Q1 are electrically connected to one end of the resistor R4, the other end of the resistor R4 is electrically connected to a negative electrode of the diode D2, and an anode of the diode D2 is electrically connected to the ground PE; the collector of the triode Q1 is electrically connected with the cathode of the light emitting diode of the linear optocoupler U1;

the second input end Nint is electrically connected to one end of the resistor R6, the other end of the resistor R6 is electrically connected to one end of the diac D5, one end of the nonpolar capacitor C4, the anode of the polar capacitor C5 and one end of the resistor R7, the other end of the resistor R7 is electrically connected to the anode of the led of the linear optocoupler U2, the other end of the diac D5, the other end of the nonpolar capacitor C4 and the cathode of the polar capacitor C5 are electrically connected to the cathode of the led of the linear optocoupler U2, the collector E2 of the phototransistor of the linear optocoupler U2 is electrically connected to the signal input end of the processing operation module, and the emission set F2 of the phototransistor of the linear optocoupler U2 is connected to the ground GND line; the first input end Lint is electrically connected with a cathode of the diode D6, an anode of the diode D6 is electrically connected with one end of the nonpolar capacitor C6, one end of the resistor R8 and an emitter of the triode Q2, respectively, the other end of the nonpolar capacitor C6, the other end of the resistor R8 and a base of the triode Q2 are electrically connected with one end of the resistor R5, the other end of the resistor R5 is electrically connected with a cathode of the diode D4, and an anode of the diode D4 is electrically connected with a ground PE; and the collector electrode of the triode Q2 is electrically connected with the negative electrode of the light emitting diode of the linear optocoupler U2.

Optionally, the anti-pinch detection module comprises an anti-pinch rod and trigger mechanisms connected to two ends of the anti-pinch rod; the triggering mechanism is arranged at the end part of the electric door body, and the anti-clamping rod is vertically arranged in parallel with the shell of the electric door body; prevent pressing from both sides detection module and be used for when preventing that the clamping lever receives the striking, trigger mechanism produces and prevents pressing from both sides the instruction.

Specifically, the system further comprises a video identification module, wherein the video identification module is used for acquiring images around the electric door body and identifying living bodies, vehicles and the electric door body in the images, and the capture range of the video identification module follows the electric door body; the electric door is also used for generating a stopping instruction when the living bodies and/or vehicles are identified to exist around the electric door body in the process of closing the door;

the output end of the video identification module is electrically connected with the input end of the processing operation module, and the processing operation module is used for controlling the alternating current contactor to disconnect a line when receiving the stopping instruction and powering off the driving module.

Preferably, the device further comprises a voltage-current balance detection module, an input end of the voltage-current balance detection module is electrically connected with the secondary coil of the isolation transformer T0, the voltage and current balance detection module is used for collecting the current LI of the phase line, the voltage LU between the phase lines, the current NI of the zero line and the voltage NU between the zero line and the phase line, calculating the balance coefficient of the phase line and the zero line in the power supply line according to the current LI of the phase line and the current NI of the zero line, and generating an alarm instruction when the current LI of the phase line exceeds a preset phase line current alarm threshold value, the voltage LU between the phase lines exceeds a preset phase-to-phase voltage alarm threshold value, the current NI of the zero line exceeds a preset zero line current threshold value, and the voltage NU between the zero line and the phase line exceeds a preset zero phase voltage alarm threshold value and/or the balance coefficient exceeds a preset balance alarm threshold value;

the input end of the processing operation module is electrically connected with the output end of the voltage and current balance detection module, and the processing operation module is used for controlling the alternating current contactor to disconnect a line when receiving the alarm instruction, so that the driving module is powered off.

A control method of an electric door, which uses a safe and reliable electric door, comprises the following steps:

and electric leakage detection:

a1, collecting the current LI of a phase line and the current NI of a zero line in an operation circuit of the electrically operated gate;

a2, analyzing and processing the current LI of the phase line to generate a first leakage current when the phase line of the circuit leaks electricity, and/or analyzing and processing the current NI of the zero line to generate a second leakage current when the zero line of the circuit leaks electricity;

anti-pinch detection:

acquiring real-time environment data in the moving range of the electric door when the electric door is opened or closed, and judging whether an object enters the moving range of the electric door according to the real-time environment data; generating an anti-pinch instruction when an object enters the moving range of the electric door;

the processing and running steps are as follows:

the processing operation module compares the first leakage current and/or the second leakage current with a preset safe current threshold value respectively; when the first leakage current and/or the second leakage current exceed the safety current threshold, controlling the alternating current contactor to disconnect a line, and powering off the driving module;

when the processing operation module receives the anti-pinch instruction, the alternating current contactor is controlled to disconnect a circuit, and the driving module is powered off.

It is to be noted that, the step a2 specifically includes: when the phase line of the operating line has a leakage problem, the current of the phase line or the live line flows to the ground line PE through the leakage part, the current of the ground line PE drives the triode Q1 to be conducted, a loop is formed between the first input end Lint and the second input end Nint which are electrically connected with the secondary coil of the isolation transformer T0, the linear optocoupler U1 is driven to work, and the collector electrode E1 of the phototriode of the linear optocoupler U1 forms a first leakage current;

when the zero line of the operating line has a leakage problem, the current of the zero line flows to the ground wire PE through the leakage position, the current of the ground wire PE drives the triode Q2 to be conducted, a loop is formed between the first input end Lint and the second input end Nint which are electrically connected with the secondary coil of the isolation transformer T0, the linear optocoupler U2 is driven to work, and the collector E2 of the phototriode of the linear optocoupler U2 forms second leakage current.

Optionally, the anti-pinch detection step specifically includes: the electric door is opened or closed, and when the clamping prevention rod is impacted, the triggering mechanism generates an anti-clamping instruction.

Specifically, the method further comprises a video identification step, wherein the video identification step comprises the following steps:

acquiring an image around the electric door body;

identifying a living body, a vehicle and the power door body in the image, wherein a capture range of the video identification module follows the power door body;

generating a stopping instruction when the living bodies and/or vehicles are identified to exist around the electric door body in the process of closing the door;

and the processing and running step further comprises the step of controlling the alternating current contactor to disconnect a line and power off the driving module when the processing and running module receives a suspension instruction.

Preferably, the method further comprises a voltage-current balance detection step, wherein the voltage-current balance detection step comprises:

collecting the current LI of the phase lines, the voltage LU between the phase lines, the current NI of the zero line and the voltage NU between the zero line and the phase lines;

calculating the balance coefficient of the phase line and the zero line in the power supply line according to the current LI of the phase line and the current NI of the zero line;

when the current LI of the phase line exceeds a preset phase line current alarm threshold value, the voltage LU between the phase lines exceeds a preset inter-phase voltage alarm threshold value, the current NI of the zero line exceeds a preset zero line current threshold value, the voltage NU between the zero line and the phase line exceeds a preset zero-phase voltage alarm threshold value or the balance coefficient exceeds a preset balance alarm threshold value, generating an alarm instruction;

and the processing operation step also comprises the step of controlling the alternating current contactor to disconnect a line when the processing operation module receives an alarm instruction, so that the driving module is powered off.

One of the above technical solutions has the following beneficial effects:

1. when the inlet wire of electrically operated gate or its inside drive line appear short circuit or electric leakage, the electric leakage detection module can detect out the unusual of circuit, through handling the operation module control ac contactor disconnection to avoid further stretching of trouble, also can avoid the electrically operated gate body of electrically operated gate is electrified, avoids people around the electrically operated gate to touch the electrically operated gate and electrocute. When the fault is removed, the electric leakage detection module detects that the line is not abnormal, the AC contactor is controlled to be closed through the processing operation module, and the driving module can be powered on to normally operate. The electric leakage detection module can effectively identify the abnormal problem of any line in the power grid, the judgment process is rapid, the power supply line can be cut off rapidly, and no time difference exists, so that the power utilization safety near the electric door can be effectively guaranteed.

2. When the in-process that opens the door or close the door at the electrically operated gate, be close to the region that electrically operated gate or closed the door as the object, prevent pressing from both sides detection module and can detect there is the anomaly to through processing operation module control ac contactor disconnection avoids the object to be opened the door or closed the door the electrically operated gate in the action and presss from both sides, leaves the regional back that electrically operated gate or closed the door as the object, prevent pressing from both sides detection module and detect not unusual, through processing operation module control ac contactor closes, drive module just can be electrified and normal operating.

Drawings

FIG. 1 is a flow chart of a control method in one embodiment of the invention;

FIG. 2 is a flow chart of the video identification steps in one embodiment of the present invention;

FIG. 3 is a circuit diagram of one embodiment of the present invention;

FIG. 4 is a circuit diagram of a single phase detection circuit of one embodiment of the present invention;

FIG. 5 is a circuit diagram of a neutral detection circuit of one embodiment of the present invention;

FIG. 6 is a schematic structural view of a power door according to an embodiment of the present invention;

FIG. 7 is a schematic diagram of an anti-pinch detection module according to an embodiment of the invention;

wherein: 1, an electric door body; 11 a door head; 2 an alternating current contactor; 3, a driving module; 4 a leakage detection module; 5, an anti-pinch detection module; 51 an anti-pinch bar; 52 a trigger mechanism; 6, processing and operating the module; 7, a video identification module; 8, a voltage and current balance detection module; 9 switching power supply; a resistor R1; a resistor R2; a resistor R3; a resistor R4; a resistor R5; a resistor R6; a resistor R7; a resistor R8; a non-polar capacitor C1; a polar capacitor C2; a non-polar capacitor C3; a non-polar capacitor C4; a polar capacitor C5; a non-polar capacitor C6; a diac D1; a diode D2; a diode D3; a diode D4; a diac D5; a diode D6; a transistor Q1; a transistor Q2; a linear optocoupler U1; and a linear optical coupler U2.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the embodiments of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; either directly or indirectly through intervening media, either internally or in any other relationship. Specific meanings of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art according to specific situations.

The following disclosure provides many different embodiments or examples for implementing different configurations of embodiments of the invention. In order to simplify the disclosure of embodiments of the invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, embodiments of the invention may repeat reference numerals and/or reference letters in the various examples, which have been repeated for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed. In addition, embodiments of the present invention provide examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

As shown in fig. 1-7, a safe and reliable electric door includes an electric door body 1, an isolation transformer T0, an ac contactor 2, a driving module 3, a leakage detecting module 4, an anti-pinch detecting module 5, and a processing and operating module 6;

a primary coil of the isolation transformer T0 is electrically connected to a mains supply, a secondary coil of the isolation transformer T0 is electrically connected to an input end of the ac contactor 2, an output end of the ac contactor 2 is electrically connected to an input end of the driving module 3, and the driving module 3 is configured to drive the electric door body 1 to move;

the input end of the electric leakage detection module 4 is electrically connected with the secondary coil of the isolation transformer T0, and the electric leakage detection module 4 is configured to collect a current LI of a phase line and a current NI of a zero line in an operation circuit of the electric door, analyze and process the current LI of the phase line to obtain a first electric leakage current, and analyze and process the current NI of the zero line to obtain a second electric leakage current; specifically, the turn ratio of the primary coil and the secondary coil of the isolation transformer T0 is 1: 1, isolation transformer T0 only plays the isolation, avoids the user directly to touch the commercial power, and does not play the effect of step-up or step-down.

The anti-pinch detection module 5 is arranged on the electric door body 1, and the anti-pinch detection module 5 is used for collecting real-time environment data in a moving range of the electric door when the electric door is opened or closed, judging whether an object enters the moving range of the electric door according to the real-time environment data, and sending an anti-pinch instruction to the processing and operating module 6 when the object enters the moving range of the electric door;

the input end of the processing operation module 6 is electrically connected with the output end of the leakage detection module 4 and the output end of the anti-pinch detection module 5 respectively, the output end of the processing operation module 6 is electrically connected with the control end of the alternating current contactor 2, the processing operation module 6 is used for comparing the first leakage current and the second leakage current with a preset safe current threshold value respectively, and is also used for controlling the alternating current contactor 2 to disconnect a circuit and powering off the driving module 3 when the first leakage current and/or the second leakage current exceed the safe current threshold value; and the processing and operating module 6 is also used for receiving the anti-pinch instruction and controlling the alternating current contactor 2 to disconnect the circuit, so that the driving module 3 is powered off. Preferably, the processing operation module is a central processing unit.

The secondary coil of the isolation transformer T0 is electrically connected with the input end of a switching power supply 9, and the output end of the switching power supply 9 is electrically connected with the power supply input end of the processing operation module 6; specifically, the switching power supply 9 converts the alternating current of the secondary coil of the isolation transformer T0 into a 24V direct current, the output terminal of the switching power supply 9 is electrically connected to the power supply unit in the processing operation module 6, and the power supply unit converts the 24V direct current output by the switching power supply 9 into a 5V direct current to power other units of the processing operation module 6. During normal use, electric leakage detection module 4 detects out that the circuit is unusual, handle operation module 6 control ac contactor 2 closes, drive module 3 and commercial power intercommunication, drive module 3 operates, drives the action of electrically operated gate body 1. Set up isolation transformer T0 enables the drive circuit and the electric wire netting of electrically operated gate and keeps apart completely, makes drive module 3, electric leakage detection module 4, prevents pressing from both sides detection module 5 and handles the ground wire of operation module 6 and the ground wire of commercial power and keeps apart, can not produce the return circuit with the ground when human touching leakage equipment, can not produce the risk of electrocution.

When the inlet wire of electrically operated gate or its inside drive line appear short circuit or electric leakage, electric leakage detection module 4 can detect out the unusual of circuit, through handling operation module 6 control 2 disconnection ac contactor to avoid further stretching of trouble, also can avoid electrically operated gate body 1 of electrically operated gate is electrified, avoids people around the electrically operated gate to touch the electrically operated gate and electrocute. After the fault is removed, the electric leakage detection module 4 detects that the line is not abnormal, the AC contactor 2 is controlled to be closed through the processing operation module 6, and the driving module 3 can be powered on to normally operate. The electric leakage detection module 4 can effectively identify the abnormal problem of any line in the power grid, the judgment process is rapid, the power supply line can be cut off rapidly, and no time difference exists, so that the power utilization safety near the electric door can be effectively guaranteed. When the in-process that opens the door or close the door at the electrically operated gate, be close to the region that the electrically operated gate or close the door as the object, prevent pressing from both sides detection module 5 and can detect there is the abnormality to through processing operation module 6 control ac contactor 2 disconnection avoids the object to be opened the door or close the door electrically operated gate in the action and presss from both sides, leaves the regional back that the electrically operated gate or closed the door as the object, prevent pressing from both sides detection module 5 and detect not unusual, through processing operation module 6 control ac contactor 2 closes, drive module 3 just can be electrified and normal operating.

In some embodiments, the electric leakage detection module 4 includes a single-phase detection circuit and a zero line detection circuit; the single-phase detection circuit comprises a resistor R1, a resistor R2, a resistor R3, a resistor R4, a nonpolar capacitor C1, a polar capacitor C2, a nonpolar capacitor C3, a bidirectional trigger diode D1, a diode D2, a diode D3, a triode Q1 and a linear optocoupler U1; the zero line detection circuit comprises a resistor R5, a resistor R6, a resistor R7, a resistor R8, a nonpolar capacitor C4, a polar capacitor C5, a nonpolar capacitor C6, a diode D4, a bidirectional trigger diode D5, a diode D6, a triode Q2 and a linear optocoupler U2; the input end of the electric leakage detection module 4 is divided into a first input end Lint and a second input end Nint, the first input end Lint is used for collecting the current LI of the phase line, and the second input end Nint is used for collecting the current NI of the zero line;

as shown in fig. 4, the first input end Lint is electrically connected to one end of the resistor R1, the other end of the resistor R1 is electrically connected to one end of the diac D1, one end of the nonpolar capacitor C1, the positive electrode of the polar capacitor C2 and one end of the resistor R2, respectively, the other end of the resistor R2 is electrically connected to the positive electrode of the light emitting diode of the linear optocoupler U1, the other end of the diac D1, the other end of the nonpolar capacitor C1 and the negative electrode of the polar capacitor C2 are electrically connected to the negative electrode of the light emitting diode of the linear optocoupler U1, the collector E1 of the phototransistor of the linear optocoupler U1 is electrically connected to the signal input end of the processing operation module 6, and the emitter F1 of the phototransistor of the linear optocoupler U1 is electrically connected to the ground GND; the second input terminal Nint is electrically connected to a negative electrode of the diode D3, an anode of the diode D3 is electrically connected to one end of the nonpolar capacitor C3, one end of the resistor R3, and an emitter of the transistor Q1, respectively, the other end of the nonpolar capacitor C3, the other end of the resistor R3, and a base of the transistor Q1 are electrically connected to one end of the resistor R4, the other end of the resistor R4 is electrically connected to a negative electrode of the diode D2, and an anode of the diode D2 is electrically connected to the ground PE; the collector of the triode Q1 is electrically connected with the cathode of the light emitting diode of the linear optocoupler U1;

as shown in fig. 5, the second input end Nint is electrically connected to one end of the resistor R6, the other end of the resistor R6 is electrically connected to one end of the diac D5, one end of the nonpolar capacitor C4, the positive electrode of the polar capacitor C5 and one end of the resistor R7, respectively, the other end of the resistor R7 is electrically connected to the positive electrode of the light emitting diode of the linear optocoupler U2, the other end of the diac D5, the other end of the nonpolar capacitor C4 and the negative electrode of the polar capacitor C5 are electrically connected to the negative electrode of the light emitting diode of the linear optocoupler U2, the collector E2 of the phototransistor of the linear optocoupler U2 is electrically connected to the signal input end of the processing operation module 6, and the emission set F2 of the phototransistor of the linear optocoupler U2 is connected to the ground GND; the first input end Lint is electrically connected with a cathode of the diode D6, an anode of the diode D6 is electrically connected with one end of the nonpolar capacitor C6, one end of the resistor R8 and an emitter of the triode Q2, respectively, the other end of the nonpolar capacitor C6, the other end of the resistor R8 and a base of the triode Q2 are electrically connected with one end of the resistor R5, the other end of the resistor R5 is electrically connected with a cathode of the diode D4, and an anode of the diode D4 is electrically connected with a ground PE; and the collector electrode of the triode Q2 is electrically connected with the negative electrode of the light emitting diode of the linear optocoupler U2. Specifically, the diac D1 and the diac D5 are diodes that are both conductive in both directions, and can be turned on when the voltage applied to the diac D1 or the diac D5 is greater than its trigger voltage. The drive current of the triode Q1 and the drive current of the triode Q2 are 0.05mA-15.5 mA.

Specifically, when the power supply system is a three-phase power supply system, the isolation transformer T0 is a three-phase transformer, the leakage detection module 4 includes three single-phase detection circuits and three first input ends Lint, each single-phase detection circuit corresponds to one first input end Lint, each first input end Lint is electrically connected to one of the phases in the three-phase power supply system of the secondary coil of the isolation transformer T0, and the second input end Nint is electrically connected to the zero line of the secondary coil of the isolation transformer T0. When the power supply system is a common live wire and zero line power supply system, the electric leakage detection module 4 comprises a single-phase detection circuit, the first input end Lint is electrically connected with the live wire of the secondary coil of the isolation transformer T0, and the second input end Nint is electrically connected with the zero line of the secondary coil of the isolation transformer T0. It should be noted that the ground line PE is a common ground line of the leakage detecting module 4, the anti-pinch detecting module 5, and the processing and operating module 6.

As shown in fig. 3-5, in this embodiment, the power supply system is a normal live wire and zero line power supply system, when a problem of leakage occurs in a live wire, a current of the live wire flows to a ground wire PE through a leakage point, a current driving transistor Q1 of the ground wire PE is turned on, a loop is formed between a first input end LI and a second input end NI electrically connected to a secondary coil of the isolation transformer T0, a linear optocoupler U1 is driven to operate, a collector E1 of a phototransistor of the linear optocoupler U1 sends a first leakage current to the processing and operating module 6, after receiving the first leakage current exceeding a preset safe current threshold, the processing and operating module 6 outputs a short-circuit protection control signal to the ac contactor 2, the ac contactor 2 is turned off, and the driving module 3 stops operating. And the zero line detection circuit judges whether the leakage current of the zero line of the three-phase power supply system or the live line zero line power supply system is greater than a safe current threshold value, and if so, the AC contactor 2 is controlled to be disconnected through the processing operation step, and the circuit of the commercial power and the driving module 311 is disconnected. In this embodiment, the power supply system is an ordinary live wire and zero line power supply system, when a leakage problem occurs in a zero line, a current of the zero line flows to a ground wire PE through a leakage position, a current driving transistor Q2 of the ground wire PE is turned on, a loop is formed between a first input end LI and a second input end NI electrically connected to a secondary coil of the isolation transformer T0, a linear optocoupler U2 is driven to operate, a collector E2 of a phototransistor of the linear optocoupler U2 sends a second leakage current to the processing and operating module 6, after receiving the second leakage current exceeding a preset safety current threshold, the processing and operating module 6 outputs a short-circuit protection control signal to the ac contactor 2, the ac contactor 2 is turned off, and the driving module 3 stops operating.

It should be noted that, as shown in fig. 7, the anti-pinch detection module 5 includes an anti-pinch bar 51 and a trigger mechanism 52 connected to two ends of the anti-pinch bar 51; the trigger mechanism 52 is installed at the end of the electric door body 1, and the anti-clamping rod 51 is vertically arranged parallel to the shell of the electric door body 1; prevent pressing from both sides detection module 5 and be used for when prevent that clamp pole 51 receives the striking, trigger mechanism 52 produces and prevents pressing from both sides the instruction. Preferably, the trigger mechanism 52 is a microswitch. As shown in fig. 6 and 7, work as electrically operated gate is at the in-process of extension or shrink, has the object to get into the motion range of electrically operated gate, prevent that clamping detection module 5's anti-pinch bar 51 will hit this object, prevent that clamping bar 51 will trigger mechanism 52, trigger mechanism 52 receives the back that triggers, can produce and prevent that the clamping instruction sends through its self trigger signal output and handle operation module 6, handle operation module 6 and receive prevent clamping instruction back, control ac contactor 2 disconnection, thereby drive module 3 outage stop the function, thereby make electrically operated gate stop the motion, avoid the object further to receive the injury.

Optionally, the system further comprises a video recognition module 7, wherein the video recognition module 7 is configured to acquire an image around the power door body 1 and further configured to recognize a living body, a vehicle and the power door body 1 in the image, and a capture range of the video recognition module 7 follows the power door body 1; the door closing device is also used for generating a stopping instruction when the existence of living bodies and/or vehicles around the electric door body 1 is identified in the door closing process; the output end of the video identification module 7 is electrically connected with the input end of the processing operation module 6, and the processing operation module 6 is used for controlling the alternating current contactor 2 to disconnect the line when receiving the stopping instruction, so as to power off the driving module 3. If a living body or a vehicle enters or exits during the process of closing the electric door, and the electric door is still closed continuously at the moment, the door head 11 of the electric door is difficult to arrange the anti-pinch detection module 5, so that the door head 11 of the electric door easily collides with the living body or the vehicle, and unnecessary loss is caused. The video identification module 7 detects whether objects approach to two sides of the electric door body 1, and then identifies whether the approaching objects have living bodies and/or vehicles by using a background difference method, when the living bodies and/or vehicles around the electric door body 1 are identified in the door closing process, the alternating current contactor 2 is switched off, and the driving module 3 stops acting. Background subtraction mainly includes binarization processing and addition/subtraction of image contents, and is a conventional motion detection method, which is a technique for detecting a motion region by using the difference between a current image and a background image. The gaussian mixture model is a model formed by decomposing an image into a plurality of gaussian probability density functions based on a gaussian probability density function, and accurately quantifies the image by the gaussian probability density functions. Because the image after the background difference method still has certain noise content, the image after the difference is denoised by adopting a Gaussian model, and the noise content is reduced. The capture range of the video identification module 7 follows the electric door body 1, so that the capture range of the video identification module 7 can be ensured to be synchronous with the motion of the electric door body 1 all the time, and images around the electric door body 1 in the motion can be accurately acquired.

In particular, the voltage-current balance detection module 8 is also included, the input end of the voltage-current balance detection module 8 is electrically connected with the secondary coil of the isolation transformer T0, the voltage and current balance detection module 8 is used for collecting the current LI of the phase line, the voltage LU between the phase lines, the current NI of the zero line and the voltage NU between the zero line and the phase line, calculating the balance coefficients of the phase line and the zero line in the power supply line according to the current LI of the phase line and the current NI of the zero line, and generating an alarm instruction when the current LI of the phase line exceeds a preset phase line current alarm threshold, the voltage LU between the phase lines exceeds a preset inter-phase voltage alarm threshold, the current NI of the zero line exceeds a preset zero line current threshold, and the voltage NU between the zero line and the phase line exceeds a preset zero phase voltage alarm threshold and/or the balance coefficients exceed a preset balance alarm threshold; the input end of the processing operation module 6 is also electrically connected with the output end of the voltage and current balance detection module 8, and the processing operation module 6 is used for controlling the alternating current contactor 2 to disconnect a line when receiving the alarm instruction, so that the driving module 3 is powered off. The voltage and current balance detection module 8 judges whether the current LI of the phase line, the voltage LU between the phase lines, the current NI of the zero line, the voltage NU between the zero line and the phase line and the balance coefficient exceed corresponding alarm thresholds, if so, the processing and running module 6 controls the alternating current contactor 2 to cut off a power supply line to ensure the life and property safety of a user. Specifically, it is an existing calculation method to calculate the balance coefficients of the phase line and the zero line in the power supply line according to the current LI of the phase line and the current NI of the zero line, and details are not repeated here.

A control method of a power door, which uses a safe and reliable power door, as shown in fig. 1, comprising the steps of:

and electric leakage detection:

a1, collecting the current LI of a phase line and the current NI of a zero line in an operation circuit of the electrically operated gate;

a2, analyzing and processing the current LI of the phase line to generate a first leakage current when the phase line of the circuit leaks electricity, and/or analyzing and processing the current NI of the zero line to generate a second leakage current when the zero line of the circuit leaks electricity;

anti-pinch detection:

acquiring real-time environment data in the moving range of the electric door when the electric door is opened or closed, and judging whether an object enters the moving range of the electric door according to the real-time environment data; generating an anti-pinch instruction when an object enters the moving range of the electric door;

the processing and running steps are as follows:

the processing operation module compares the first leakage current and/or the second leakage current with a preset safe current threshold value respectively; when the first leakage current and/or the second leakage current exceed the safety current threshold, controlling the alternating current contactor 2 to disconnect the line, and powering off the driving module 3;

when the processing operation module receives an anti-pinch instruction, the alternating current contactor 2 is controlled to disconnect a circuit, and the driving module 3 is powered off.

In some embodiments, as shown in fig. 3 to 5, the step a2 specifically includes: when the phase line of the operating line has a leakage problem, the current of the phase line or the live line flows to the ground line PE through the leakage part, the current of the ground line PE drives the triode Q1 to be conducted, a loop is formed between the first input end Lint and the second input end Nint which are electrically connected with the secondary coil of the isolation transformer T0, the linear optocoupler U1 is driven to work, and the collector electrode E1 of the phototriode of the linear optocoupler U1 forms a first leakage current; when the zero line of the operating line has a leakage problem, the current of the zero line flows to the ground wire PE through the leakage position, the current of the ground wire PE drives the triode Q2 to be conducted, a loop is formed between the first input end Lint and the second input end Nint which are electrically connected with the secondary coil of the isolation transformer T0, the linear optocoupler U2 is driven to work, and the collector E2 of the phototriode of the linear optocoupler U2 forms second leakage current. The single-phase detection circuit judges whether the leakage current of one phase in the three-phase power supply system is larger than a safe current threshold or whether the leakage current of the live wire zero line power supply system is larger than a safe current threshold, if so, the alternating current contactor 2 is controlled to be disconnected through the processing operation step, and the commercial power and the circuit of the driving module 3 are disconnected.

It is worth to be noted that the anti-pinch detection steps are specifically: in the process of opening or closing the electric door, when the anti-pinch rod 51 is impacted, the trigger mechanism 52 generates an anti-pinch instruction. In one embodiment, the anti-pinch detection module 5 can also be an infrared emitter, and the anti-pinch detection module 5 detects whether objects exist on two sides of the electric door body 1 within the detection distance; when the object shelters from the laser of preventing pressing from both sides detection module 5 and sending, prevent pressing from both sides detection module 5 and generate and prevent pressing from both sides the instruction, then pass through processing operation step will drive module 3 outage.

Optionally, a video identification step is further included, as shown in fig. 2, the video identification step is: acquiring an image around the electric door body 1; identifying a living body, a vehicle and the power door body 1 in the image, wherein a capturing range of the video recognition module 7 follows the power door body 1; when the living bodies and/or vehicles around the electric door body 1 are identified in the process of closing the door, a stopping instruction is generated; and the processing operation step further comprises the step of controlling the alternating current contactor 2 to disconnect a line and power off the driving module 3 when the processing operation module receives a suspension instruction.

Specifically, the method further includes a voltage-current balance detection step, as shown in fig. 3, where the voltage-current balance detection step is: collecting the current LI of the phase lines, the voltage LU between the phase lines, the current NI of the zero line and the voltage NU between the zero line and the phase lines; calculating the balance coefficient of the phase line and the zero line in the power supply line according to the current LI of the phase line and the current NI of the zero line; when the current LI of the phase line exceeds a preset phase line current alarm threshold value, the voltage LU between the phase lines exceeds a preset inter-phase voltage alarm threshold value, the current NI of the zero line exceeds a preset zero line current threshold value, the voltage NU between the zero line and the phase line exceeds a preset zero-phase voltage alarm threshold value or the balance coefficient exceeds a preset balance alarm threshold value, generating an alarm instruction; and the processing operation step also comprises the step of controlling the alternating current contactor 2 to disconnect the line when the processing operation module receives an alarm instruction, so that the driving module 3 is powered off.

In the description herein, references to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example" or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and not to be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art within the scope of the present invention.