阅读说明：本技术 湿度检测系统 (Humidity detection system ) 是由 王东平 郭加灿 于 2020-12-22 设计创作，主要内容包括：本发明公开了一种湿度检测系统,该湿度检测系统包括：控制模块、湿度检测电路和执行电路；控制模块包括第一输入端、第二输入端和控制输出端；第一输入端用于接收对应设定湿度下的设定电压值；第二输入端与湿度检测电路的输出端电连接,用于根据检测到的与湿度对应的检测信号生成检测电压值；控制模块用于根据设定电压值和检测电压值在控制输出端输出控制信号；执行电路的输入端与控制输出端电连接,用于根据控制信号控制驱动装置。本实施例通过设定电压值与检测电压值的关系控制驱动装置动作,使得驱动装置可以根据待检测对象的湿度状况来运转,在湿度过低的情况下停机,避免待检测对象过干引起火灾,保障了人身和财产的安全。(The invention discloses a humidity detection system, which comprises: the humidity detection circuit comprises a control module, a humidity detection circuit and an execution circuit; the control module comprises a first input end, a second input end and a control output end; the first input end is used for receiving a set voltage value under the corresponding set humidity; the second input end is electrically connected with the output end of the humidity detection circuit and used for generating a detection voltage value according to a detected detection signal corresponding to the humidity; the control module is used for outputting a control signal at a control output end according to the set voltage value and the detection voltage value; the input end of the execution circuit is electrically connected with the control output end and is used for controlling the driving device according to the control signal. The action of the driving device is controlled by setting the relation between the voltage value and the detection voltage value, so that the driving device can operate according to the humidity condition of the object to be detected, the driving device is stopped under the condition that the humidity is too low, the object to be detected is prevented from being too dry to cause fire, and the personal safety and the property safety are guaranteed.)

1. A wetness detecting system, comprising: the humidity detection circuit comprises a control module, a humidity detection circuit and an execution circuit; the control module comprises a first input end, a second input end and a control output end;

the first input end is used for receiving a set voltage value under the corresponding set humidity;

the second input end is electrically connected with the output end of the humidity detection circuit and used for generating a detection voltage value according to a detected detection signal corresponding to the humidity;

the control module is used for outputting a control signal at the control output end according to the set voltage value and the detection voltage value;

and the input end of the execution circuit is electrically connected with the control output end and is used for controlling the driving device according to the control signal.

2. The wetness detecting system of claim 1, wherein the wetness detecting circuit comprises a voltage dividing unit; the voltage division unit comprises a first resistor and a detection subunit;

the first end of the first resistor is electrically connected with a first power supply, the second end of the first resistor is electrically connected with the first end of the detection subunit, the common end of the first resistor and the detection subunit is used as the output end of the humidity detection circuit, and the second end of the detection subunit is grounded;

the detection subunit is used for adjusting the resistance value between the first end and the second end of the detection subunit according to the detected humidity signal.

3. The wetness detecting system of claim 2, wherein the voltage divider unit further comprises a first capacitor;

the first end of the first capacitor is electrically connected with the first resistor and the common end of the detection subunit, and the second end of the first capacitor is electrically connected with the second end of the detection subunit.

4. The wetness detecting system of claim 3, wherein the wetness detecting circuit further comprises: a second resistor and a second capacitor;

the first end of the second resistor is electrically connected with the common end of the first resistor and the first capacitor, the second end of the second resistor is electrically connected with the first end of the second capacitor, the common end of the second resistor and the second capacitor is used as the output end of the humidity detection circuit, and the second end of the second capacitor is grounded.

5. The wetness detecting system of claim 4, wherein the wetness detecting circuit further comprises: a first diode and a second diode;

a first end of the first diode is electrically connected with a second end of the second diode, and a second end of the first diode is electrically connected with the first power supply;

the first end of the second diode is grounded, and the common end of the second diode and the first diode is electrically connected with the second end of the second resistor.

6. The humidity detection system of claim 1, further comprising a humidity setting circuit, an output of said humidity setting circuit being electrically connected to said first input for generating a set voltage value at said set humidity.

7. The wetness detecting system of claim 6, wherein the wetness setting circuit comprises a variable resistor;

the first end of the variable resistor is electrically connected with a first power supply, the second end of the variable resistor is electrically connected with the first input end, and the third end of the variable resistor is grounded.

8. The wetness detecting system of claim 7, wherein the wetness setting circuit further comprises: a third resistor and a third capacitor;

the first end of the third resistor is electrically connected with the second end of the variable resistor, the second end of the third resistor is electrically connected with the first end of the third capacitor, the common end of the third resistor and the third capacitor is electrically connected with the first input end, the common end of the third resistor and the third capacitor is used as the output end of the humidity setting circuit, and the second end of the third capacitor is grounded.

9. The wetness detecting system of claim 8, wherein the wetness setting circuit further comprises a third diode and a fourth diode;

the first end of the third diode is electrically connected with the second end of the fourth diode, the common end of the third diode and the fourth diode is electrically connected with the second end of the third resistor, the second end of the third diode is electrically connected with the first power supply, and the first end of the fourth diode is grounded.

10. The wetness detecting system of claim 1, wherein the execution circuit comprises: the relay comprises a coil and a contact;

the relay control circuit comprises a fourth resistor and a switching tube; a first end of the fourth resistor is electrically connected with a second power supply, a second end of the fourth resistor is electrically connected with a first end of the switching tube, a second end of the switching tube is electrically connected with the control output end, the second end of the switching tube is used as the input end of the execution circuit, and a third end of the switching tube is grounded;

the first end of the coil is electrically connected with the first end of the fourth resistor, and the second end of the coil is electrically connected with the fourth resistor and the common end of the switching tube;

the contact is electrically connected with a driving device, and the relay controls the contact to act according to the electrified condition of the coil so as to control the driving device.

Technical Field

The embodiment of the invention relates to a humidity detection technology, in particular to a humidity detection system.

Background

At present, the garbage output is increasing day by day, and the garbage disposal device needs to work for a long time.

When the garbage disposal device is used for disposing garbage, the garbage is excessively dry, so that fire disasters are easily caused, personal safety is damaged, and property loss is caused.

Disclosure of Invention

The invention provides a humidity detection system, which is used for controlling a driving device according to humidity and avoiding fire caused by over-low humidity.

An embodiment of the present invention provides a humidity detection system, including: the humidity detection circuit comprises a control module, a humidity detection circuit and an execution circuit; the control module comprises a first input end, a second input end and a control output end;

the first input end is used for receiving a set voltage value under the corresponding set humidity;

the second input end is electrically connected with the output end of the humidity detection circuit and used for generating a detection voltage value according to a detected detection signal corresponding to the humidity;

the control module is used for outputting a control signal at the control output end according to the set voltage value and the detection voltage value;

and the input end of the execution circuit is electrically connected with the control output end and is used for controlling the driving device according to the control signal.

Optionally, the humidity detection circuit includes a voltage division unit; the voltage division unit comprises a first resistor and a detection subunit;

the first end of the first resistor is electrically connected with a first power supply, the second end of the first resistor is electrically connected with the first end of the detection subunit, the common end of the first resistor and the detection subunit is used as the output end of the humidity detection circuit, and the second end of the detection subunit is grounded;

the detection subunit is used for adjusting the resistance value between the first end and the second end of the detection subunit according to the detected humidity signal.

Optionally, the voltage dividing unit further includes a first capacitor;

the first end of the first capacitor is electrically connected with the first resistor and the common end of the detection subunit, and the second end of the first capacitor is electrically connected with the second end of the detection subunit.

Optionally, the humidity detection circuit further includes: a second resistor and a second capacitor;

the first end of the second resistor is electrically connected with the common end of the first resistor and the first capacitor, the second end of the second resistor is electrically connected with the first end of the second capacitor, the common end of the second resistor and the second capacitor is used as the output end of the humidity detection circuit, and the second end of the second capacitor is grounded.

Optionally, the humidity detection circuit further includes: a first diode and a second diode;

a first end of the first diode is electrically connected with a second end of the second diode, and a second end of the first diode is electrically connected with the first power supply;

the first end of the second diode is grounded, and the common end of the second diode and the first diode is electrically connected with the second end of the second resistor.

Optionally, the humidity detection system further includes a humidity setting circuit, and an output end of the humidity setting circuit is electrically connected to the first input end, and is configured to generate the setting voltage value at the set humidity.

Optionally, the humidity setting circuit comprises a variable resistor;

the first end of the variable resistor is electrically connected with a first power supply, the second end of the variable resistor is electrically connected with the first input end, and the third end of the variable resistor is grounded.

Optionally, the humidity setting circuit further includes: a third resistor and a third capacitor;

the first end of the third resistor is electrically connected with the second end of the variable resistor, the second end of the third resistor is electrically connected with the first end of the third capacitor, the common end of the third resistor and the third capacitor is electrically connected with the first input end, the common end of the third resistor and the third capacitor is used as the output end of the humidity setting circuit, and the second end of the third capacitor is grounded.

Optionally, the humidity setting circuit further includes a third diode and a fourth diode;

the first end of the third diode is electrically connected with the second end of the fourth diode, the common end of the third diode and the fourth diode is electrically connected with the second end of the third resistor, the second end of the third diode is electrically connected with the first power supply, and the first end of the fourth diode is grounded.

Optionally, the execution circuit includes: the relay comprises a coil and a contact;

the relay control circuit comprises a fourth resistor and a switching tube; a first end of the fourth resistor is electrically connected with a second power supply, a second end of the fourth resistor is electrically connected with a first end of the switching tube, a second end of the switching tube is electrically connected with the control output end, the second end of the switching tube is used as the input end of the execution circuit, and a third end of the switching tube is grounded;

the first end of the coil is electrically connected with the first end of the fourth resistor, and the second end of the coil is electrically connected with the fourth resistor and the common end of the switching tube;

the contact is electrically connected with a driving device, and the relay controls the contact to act according to the electrified condition of the coil so as to control the driving device.

The humidity detection system provided by the embodiment of the invention comprises: the humidity detection circuit comprises a control module, a humidity detection circuit and an execution circuit; the control module comprises a first input end, a second input end and a control output end; the first input end is used for receiving a set voltage value under the corresponding set humidity; the second input end is electrically connected with the output end of the humidity detection circuit and used for generating a detection voltage value according to a detected detection signal corresponding to the humidity; the control module is used for outputting a control signal at a control output end according to the set voltage value and the detection voltage value; the input end of the execution circuit is electrically connected with the control output end and is used for controlling the driving device according to the control signal. The humidity detection system outputs a control signal according to the relationship between a set voltage value under set humidity and a detection voltage value under actual humidity detected by the humidity detection circuit, wherein the set voltage value corresponds to the set humidity, and the detection voltage value corresponds to the humidity of an object to be detected, so that the relationship between the detection voltage value and the set voltage value can reflect the relationship between the humidity of the object to be detected and the set humidity, and the action of the driving device is controlled according to the relationship between the set voltage value and the detection voltage value, so that the driving device can operate according to the humidity condition of the object to be detected, the fire caused by overdrying of the object to be detected is avoided, and the safety of people and property is guaranteed.

Drawings

Fig. 1 is a block diagram of a humidity detection system according to an embodiment of the present invention.

Fig. 2 is a circuit diagram of a humidity detection system according to an embodiment of the present invention.

FIG. 3 is a circuit diagram of another humidity sensing system provided by embodiments of the present invention.

FIG. 4 is a circuit diagram of another humidity sensing system provided by embodiments of the present invention.

FIG. 5 is a circuit diagram of another humidity sensing system provided by embodiments of the present invention.

FIG. 6 is a circuit diagram of another humidity sensing system provided by embodiments of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

Fig. 1 is a structural diagram of a humidity detection system according to an embodiment of the present invention, and referring to fig. 1, optionally, the humidity detection system 001 includes:

a control module 100, a humidity detection circuit 200 and an execution circuit 300; the control module 100 includes a first input A1, a second input A2, and a control output B1;

the first input end A1 is used for receiving a set voltage value corresponding to a set humidity;

the second input terminal a2 is electrically connected to the output terminal B2 of the humidity detection circuit 200, and is configured to generate a detection voltage value according to a detection signal corresponding to the detected humidity;

the control module 100 is configured to output a control signal at a control output terminal B1 according to the set voltage value and the detection voltage value;

the input terminal a3 of the execution circuit 300 is electrically connected to the control output terminal B1 for controlling the driving device 002 according to the control signal.

The control module 100 may be a single chip microcomputer with a model of N76E003, or other chips or computers with data processing functions. The output end of the execution circuit 300 is electrically connected with the driving device 002, the driving device 002 can be a garbage disposer, the object to be detected of the driving device 002 is garbage, each humidity of the garbage corresponds to a resistance value, the smaller the humidity is, the larger the resistance value is, when the humidity is reduced to a certain value, a fire disaster is easily caused, the humidity critical value which is easily caused by the fire disaster is defined as the set humidity, when the garbage is connected with a power supply, the voltage at two ends of the garbage can be obtained, and therefore the set voltage value under the set humidity can be obtained by pressurizing the garbage under the set humidity.

The humidity detection circuit 200 is configured to generate a detection voltage value according to a detection signal corresponding to the detected humidity, where the detection signal may be a resistance value, and when detecting, the humidity during detection may be obtained, and after pressurizing the garbage, the detection voltage value may be obtained according to the resistance value of the garbage during detection.

The control module 100 outputs a control signal according to the setting voltage value and the detection voltage value, and the control signal may be a level signal, i.e., a high-low level signal. For example, different control signals may be generated according to a ratio relationship between a set voltage value and a detected voltage value, when the set humidity is greater than the detected humidity, a resistance value corresponding to the set humidity is smaller than a resistance value corresponding to the detected humidity, a ratio between the set voltage value and the detected voltage value is smaller than 1, and the output control signal is a level signal for stopping the driving device; when the set humidity is smaller than the detected humidity, the resistance value corresponding to the set humidity is larger than the resistance value corresponding to the detected humidity, the ratio of the set voltage value to the detected voltage value is larger than 1, and the output control signal is a level signal for enabling the driving device to work.

In other embodiments, different control signals may be generated according to the magnitude relationship between the set voltage value and the detection voltage value, and the embodiment of generating the control signal according to what relationship between the set voltage value and the detection voltage value is not specifically limited herein.

After receiving the control signal, the input terminal of the execution circuit 300 controls the driving device 002 to stop or operate according to the received control signal. When the driving device 002 is a garbage disposer, the driving device 002 crushes the garbage, the object to be detected is the garbage, and when the control signal received by the input end of the execution circuit 300 is a level signal for operating the garbage disposer, the garbage disposer is in a running state, and the garbage is crushed; when the control signal received by the input end of the execution circuit 300 is a level signal for stopping the garbage disposer, the garbage disposer stops running, so that the situation that the garbage overdry disposer continues to operate to cause fire is avoided, and personal and property safety is guaranteed.

The humidity detection system 001 of the present embodiment generates different control signals according to the relationship between the detection voltage value generated by the humidity detection circuit 200 and the setting voltage value at the set humidity, and the execution circuit 300 controls the driving device 002 according to the different control signals.

The humidity detection system provided by the embodiment comprises: the humidity detection circuit comprises a control module, a humidity detection circuit and an execution circuit; the control module comprises a first input end, a second input end and a control output end; the first input end is used for receiving a set voltage value under the corresponding set humidity; the second input end is electrically connected with the output end of the humidity detection circuit and used for generating a detection voltage value according to a detected detection signal corresponding to the humidity; the control module is used for outputting a control signal at a control output end according to the set voltage value and the detection voltage value; the input end of the execution circuit is electrically connected with the control output end and is used for controlling the driving device according to the control signal. The humidity detection system outputs a control signal according to the relationship between a set voltage value under preset humidity and a detection voltage value under actual humidity detected by the humidity detection circuit, wherein the set voltage value corresponds to the set humidity, and the detection voltage value corresponds to the humidity of an object to be detected, so that the relationship between the detection voltage value and the set voltage value can reflect the relationship between the humidity of the object to be detected and the set humidity, and further the action of the driving device is controlled according to the relationship between the set voltage value and the detection voltage value, so that the driving device can operate according to the humidity condition of the object to be detected, the fire caused by overdrying of the object to be detected is avoided, and the personal safety and property safety are guaranteed.

Optionally, fig. 2 is a circuit diagram of a humidity detection system according to an embodiment of the present invention, and referring to fig. 2, optionally, the humidity detection circuit 200 includes a voltage division unit 210; the voltage dividing unit 210 comprises a first resistor R1 and a detection subunit 211;

the first end D1 of the first resistor R1 is electrically connected with the first power supply U1, the second end D2 of the first resistor R1 is electrically connected with the first end D3 of the detection subunit 211, the common end of the first resistor R1 and the detection subunit 211 serves as the output end B2 of the humidity detection circuit 200, and the second end D4 of the detection subunit 211 is grounded;

the detecting subunit 211 is configured to adjust a resistance value between the first terminal D3 and the second terminal D4 according to the detected humidity signal.

The humidity signal may be a humidity signal, the detecting subunit 211 may be a probe, the probe includes two contact heads, one contact head is used as the first end D3 of the detecting subunit 211, the other contact head is used as the second end D4 of the detecting subunit 211, when the two ends of the detecting subunit 211 contact an object to be detected, such as garbage, a resistance value is generated between the two ends of the detecting subunit, and the larger the humidity of the object to be detected is, the smaller the resistance value is. The first voltage source may be a +5V dc voltage source, the resistance of the first resistor R1 may be 1K Ω, each humidity of the object to be detected corresponds to a different resistance, the detecting subunit 211 generates a resistance between the first end D3 and the second end D4 according to the humidity of the object to be detected, the detecting subunit 211 divides the voltage of the first voltage source U1 together with the first resistor R1 after having the resistance, the voltage value of the first end D3 of the detecting subunit 211 is a detection voltage value, and the detection voltage value is in direct proportion to the humidity detected by the detecting subunit 211.

Fig. 3 is a circuit diagram of another humidity detection system according to an embodiment of the present invention, and referring to fig. 3, on the basis of the above embodiment, optionally, the voltage dividing unit 211 further includes a first capacitor C1;

the first end D5 of the first capacitor C1 is electrically connected to the first resistor R1 and the common terminal of the detecting sub-unit 211, and the second end D6 of the first capacitor C1 is electrically connected to the second end D4 of the detecting sub-unit 211.

The capacitance of the first capacitor C1 can be set to 1000 μ F, and the first capacitor C1 is a filter capacitor, and mainly plays a role of filtering, so as to filter some electrostatic interference when the detecting subunit 211 detects the humidity signal of the object to be detected.

Fig. 4 is a circuit diagram of another humidity detection system according to an embodiment of the present invention, and referring to fig. 4, on the basis of the foregoing embodiment, optionally, the humidity detection circuit further includes: a second resistor R2 and a second capacitor C2;

the first end D7 of the second resistor R2 is electrically connected to the common end of the first resistor R1 and the first capacitor C1, the second end D8 of the second resistor R2 is electrically connected to the first end D9 of the second capacitor C2, the common end of the second resistor R2 and the second capacitor C2 serves as the output end B2 of the humidity detection circuit 200, and the second end D10 of the second capacitor C2 is grounded.

The second resistor R2 and the second capacitor C2 form an RC series filter circuit, for example, the resistance value of the second resistor R2 is 1K Ω, the capacitance value of the second capacitor C1 is 10 μ F, the resonant frequency of the RC series filter circuit is 16Hz, when the detection subunit 211 detects an object to be detected, electrostatic interference may occur, the frequency of the electrostatic signal is generally much higher than the resonant frequency of the filter circuit, i.e., much higher than 16Hz, therefore, even if the detection subunit 211 outputs a high potential at the first end D3 of the detection subunit 211 due to electrostatic interference, the high potential is filtered by the RC series filter circuit formed by the second resistor R1 and the second capacitor C2, and damage to the device is avoided.

With continued reference to fig. 4, optionally, the humidity detection circuit further comprises: a first diode T1 and a second diode T2;

a first end E1 of the first diode T1 is electrically connected with a second end E2 of the second diode T2, and a second end E3 of the first diode T1 is electrically connected with a first power supply U1;

the first end E4 of the second diode T2 is grounded, and the common end of the second diode T2 and the first diode T1 is electrically connected to the second end D8 of the second resistor R2.

The first diode T1 and the second diode T2 play a role in clamping, the types of the first diode T1 and the second diode T2 may be BAS40-04, when the detected voltage value received by the second input terminal a2 of the control module 100 is too high and exceeds the voltage of the U1 of the first power source, the voltage of the first terminal E1 of the first diode T1 is higher than the voltage of the second terminal E3 of the first diode T1, so that the first diode T1 is turned on, the voltage input by the second input terminal a2 is reduced to the voltage value of the first voltage source U1, and the control module 100 is prevented from being damaged due to the too high voltage input by the second input terminal a 2.

Fig. 5 is a circuit diagram of another humidity detection system according to an embodiment of the present invention, referring to fig. 5, optionally, the humidity detection system further includes a humidity setting circuit 400, and the output terminal B3 of the humidity setting circuit 400 is electrically connected to the first input terminal a1, and is used for generating a set voltage value at a set humidity.

The critical humidity that is likely to cause fire is defined as a set humidity, and the humidity setting circuit 400 is configured to generate a set voltage value according to the set humidity.

With continued reference to fig. 5, based on the above-described embodiment, optionally, humidity setting circuit 400 includes a variable resistor R3;

the first end D11 of the variable resistor R3 is electrically connected with the first power supply U1, the second end D12 of the variable resistor R3 is electrically connected with the first input end A1, and the third end D13 of the variable resistor R3 is grounded.

The variable resistor R3 may be a rotary potentiometer, and has a resistance value of 10K Ω, each humidity of the object to be detected, such as garbage, corresponds to a resistance value, and after the set humidity is determined, the resistance value corresponding to the set humidity can be determined, the humidity detection circuit shown in fig. 4 according to the above embodiment obtains a voltage obtained by dividing the resistance under the set humidity, i.e., a set voltage value, and adjusts the variable resistor R3 according to the set voltage value, so that the voltage value between the second end D12 of the variable resistor R3 and the third end D13 of the variable resistor R3 is equal to the set voltage value.

Referring to fig. 5, optionally, the humidity setting circuit 400 further includes: a third resistor R4 and a third capacitor C3;

a first end D14 of the third resistor R4 is electrically connected to a second end D12 of the variable resistor R3, a second end D15 of the third resistor R4 is electrically connected to a first end D16 of the third capacitor C3, a common end of the third resistor R4 and the third capacitor C3 is electrically connected to the first input end a1, a common end of the third resistor R4 and the third capacitor C3 serves as an output end B3 of the humidity setting circuit 400, and a second end D17 of the third capacitor C3 is grounded.

The third resistor R4 and the third capacitor C3 form an RC series filter circuit, for example, the resistance value of the third resistor R4 is 1K Ω, the capacitance value of the third capacitor C3 is 10 μ F, the resonant frequency of the RC series filter circuit is 16Hz, the second end D12 of the variable resistor R3 may have electrostatic interference during adjustment, and the frequency of the electrostatic signal is generally much higher than the resonant frequency of the filter circuit, i.e., much higher than 16Hz, so that even if the variable resistor R3 is interfered by electrostatic interference, a high potential is output at the second end D12, the high potential is filtered by the RC series filter circuit formed by the third resistor R4 and the third capacitor C3, and damage to the device is avoided.

With continued reference to fig. 5, optionally, the humidity setting circuit 400 further includes a third diode T3 and a fourth diode T4;

a first end E5 of the third diode T3 is electrically connected to a second end E6 of the fourth diode T4, a common end of the third diode T3 and the fourth diode T4 is electrically connected to a second end D15 of the third resistor R4, a second end E7 of the third diode T3 is electrically connected to the first power source U1, and a first end E8 of the fourth diode T4 is grounded.

The third diode T3 and the fourth diode T4 play a role of clamping, the types of the third diode T3 and the fourth diode T4 may be BAS40-04, when the set voltage value received by the first input terminal a1 of the control module 100 is too high and exceeds the voltage of the U1 of the first power source, the voltage of the first terminal E5 of the third diode T3 is higher than the voltage of the second terminal E7 of the third diode T3, so that the third diode T3 is turned on, the voltage input by the first input terminal a1 is reduced to the voltage value of the first voltage source U1, and the control module 100 is prevented from being damaged by the too high voltage input by the first input terminal a 1.

Fig. 6 is a circuit diagram of another humidity detection system according to an embodiment of the present invention, and optionally, referring to fig. 6, the execution circuit 300 includes: a relay 310 and a relay control circuit 320, the relay 310 including a coil 311 and a contact 312;

the relay control circuit 320 comprises a fourth resistor R5 and a switch tube Q1; a first end D18 of the fourth resistor R5 is electrically connected with the second power supply U2, a second end D19 of the fourth resistor R5 is electrically connected with a first end F1 of the switching tube Q1, a second end F2 of the switching tube Q1 is electrically connected with the control output terminal B1, a second end F2 of the switching tube Q1 serves as an input terminal A3 of the execution circuit 300, and a third end F3 of the switching tube Q1 is grounded;

the first end D20 of the coil 311 is electrically connected with the first end D18 of the fourth resistor R5, and the second end D21 of the coil 311 is electrically connected with the common end of the fourth resistor R5 and the switching tube Q1;

the contact 312 is electrically connected to the driving device, and the relay 310 controls the contact 312 to operate according to the electrification of the coil 311 to control the driving device.

The second power source U2 may be a dc voltage source of +12V, the fourth resistor R5 may be a current-limiting resistor, the resistance may be 4.7K Ω, the switching transistor Q1 may be an NMOS transistor of MMUN2211LT, the NMOS transistor includes a gate, a source, and a drain, when the switching transistor Q1 is an NMOS transistor, the switching transistor Q1 is turned on when the gate is high, and the switching transistor Q1 is turned off when the gate is low, in this embodiment, the drain is the first terminal F1 of the switching transistor Q1, the gate is the second terminal F2 of the switching transistor Q1, the source is the third terminal F3 of the switching transistor Q1, in other embodiments, the switching transistor Q1 may also be a PMOS transistor, and the relay 310 is of HF-46F.

For example, when the ratio of the set voltage value input from the first input terminal a1 of the control module 100 to the detected voltage value input from the second input terminal a2 is less than or equal to 1, the control signal output from the output terminal B1 of the control module 100 is a low level, and the low level is transmitted to the second terminal of the switching tube Q1 to turn off the switching tube Q1, the relay control circuit 320 cannot form a path, the coil 311 is not electrified, the contact 312 is disconnected, and the driving apparatus is stopped; when the ratio of the set voltage value input from the first input terminal a1 of the control module 100 to the detected voltage value input from the second input terminal a2 is greater than 1, the control signal output from the output terminal B1 of the control module 100 is a high level, and the high level is transmitted to the second terminal of the switching tube Q1 to turn on the switching tube Q1, so that the relay control circuit 320 forms a path, the coil 311 is charged, the contact 312 is closed, and the driving device operates.

It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.