阅读说明：本技术 一种nb-iot远程开合闸控制系统 (NB-IOT remote switching gate control system ) 是由 何亚熊 于 2021-07-21 设计创作，主要内容包括：本发明公开了一种NB-IOT远程开合闸控制系统,包括降压模块、电源电路、NB-IOT发射电路、远程控制模块、NB-IOT接收电路、继电器控制电路、光电隔离开关电路、主芯片电路、第一继电器线圈、第二继电器线圈,降压模块通过电源电路连接NB-IOT接收电路和继电器控制电路,继电器控制电路和NB-IOT接收电路均连接于主芯片电路,光电隔离开关电路连接主芯片电路,远程控制模块通过NB-IOT发射电路无线连接于NB-IOT接收电路。本发明有益效果：本发明远程控制模块通过NB-IOT发射电路向NB-IOT接收电路发送开启或关闭信号,NB-IOT接收电路将开启或关闭信号通过主芯片和继电器控制电路对开合闸电路进行控制,起到远程控制效果,也可以在现场对开合闸电路进行控制,实现了本地现场控制和远程控制的结合。(The invention discloses an NB-IOT remote switching-on and switching-off control system which comprises a voltage reduction module, a power supply circuit, an NB-IOT transmitting circuit, a remote control module, an NB-IOT receiving circuit, a relay control circuit, a photoelectric isolation switch circuit, a main chip circuit, a first relay coil and a second relay coil. The invention has the beneficial effects that: the remote control module sends an opening or closing signal to the NB-IOT receiving circuit through the NB-IOT transmitting circuit, the NB-IOT receiving circuit controls the opening or closing signal to the opening and closing circuit through the main chip and the relay control circuit, a remote control effect is achieved, the opening and closing circuit can be controlled on site, and the combination of local site control and remote control is achieved.)

1. The utility model provides a long-range switching on and off control system of NB-IOT which characterized in that: the voltage reduction module (1) is connected with the NB-IOT receiving circuit (3) and the relay control circuit (8) through the power supply circuit (2), the relay control circuit (8) and the NB-IOT receiving circuit (3) are both electrically connected with the main chip circuit (6), the photoelectric isolation switch circuit (7) is connected with the main chip circuit (6), the relay control circuit (8) comprises a first coil control circuit and a second coil control circuit, the first coil control circuit is connected with the first relay coil (J1), the second coil control circuit is connected with a second relay coil (J2), a normally open contact (KA1) is arranged on the first relay coil (J1), a normally closed contact (KA2) is arranged on the second relay coil (J2), the normally open contact (KA1) is connected with a contactor coil (KM) sequentially through the normally closed contact (KA2) and a stop button (SB2), the normally open contact (KA1) is respectively connected with a contactor auxiliary contact (KM1) and a start button (SB1) in parallel, and the remote control module (5) is wirelessly connected with the NB-IOT receiving circuit (3) through an NB-IOT transmitting circuit (4).

2. The NB-IOT remote switching on and off control system of claim 1, wherein: the main chip circuit (6) comprises a main chip (U1), a seventh pin of the main chip (U1) is connected with an eighth pin of the main chip (U1) sequentially through a third capacitor (C3) and a fourth capacitor (C4), a first crystal oscillator (JZ1) is connected between the seventh pin and the eighth pin of the main chip (U1), a ninth pin of the main chip (U1) is grounded through a sixth capacitor (C6), and a tenth pin of the main chip (U1) is grounded through a fifth capacitor (C5).

3. The NB-IOT remote switching on and off control system of claim 1, wherein: the NB-IOT receiving circuit (3) comprises a communication chip (U2) and an antenna module (T1), wherein a third pin of the communication chip (U2) is connected with a first pin of a main chip (U1), a fourth pin of the communication chip (U2) is connected with a second pin of the main chip (U1), a twenty-second pin and a twenty-third pin of the communication chip (U2) are grounded through an eighth capacitor (C8) and a ninth capacitor (C9), and a thirty-fourth pin and a thirty-fifth pin of the communication chip (U2) are connected with the antenna module (T1) in a connecting mode.

4. The NB-IOT remote switching on and off control system of claim 1, wherein: the first coil control circuit comprises a first triode (BG1), the emitter of the first triode (BG1) is connected with the base of the first triode (BG1) through a third resistor (R3), the base of the first triode (BG1) is connected with the twenty-ninth pin of the main chip (U1) through a second resistor (R2), the collector of the first triode is respectively connected with one ends of a first coil (JDQ1), a first diode (D1) and a first resistor (R1), the other end of the first resistor (R1) is connected with the other end of the first coil (JDQ1) through a first light-emitting diode (DL1), and the other end of the first diode (D1) is connected with the other end of the first coil (JDQ 1).

5. The NB-IOT remote switching on and off control system of claim 1, wherein: the second coil control circuit comprises a second triode (BG2), the emitter of the second triode (BG2) is connected with the base of the second triode (BG2) through a sixth resistor (R6), the base of the second triode (BG2) is connected with the thirtieth pin of the main chip (U1) through a fifth resistor (R5), the collector of the second triode (BG2) is respectively connected with one ends of a second coil (JDQ2), a second diode (D2) and a fourth resistor (R4), the other end of the fourth resistor (R4) is connected with the other end of the second coil (JDQ2) through a second light-emitting diode (DL2), and the other end of the second diode (D2) is connected with the other end of the second coil (JDQ 2).

6. The NB-IOT remote switching on and off control system of claim 1, wherein: the photoelectric isolation switch circuit (7) comprises a photoelectric coupler (OP1), one end of the photoelectric coupler (OP1) is connected with a seventh resistor (R7), a tenth capacitor (C10) and a sixteenth pin of a main chip (U1) respectively, and the other end of the photoelectric coupler (OP1) is connected with a live wire of a mains supply sequentially through a third diode (D3) and an eighth resistor (R8).

Technical Field

The invention relates to the technical field of switching gate control, in particular to an NB-IOT remote switching gate control system.

Background

As shown in fig. 1, a circuit diagram of a switch and switch control circuit in the prior art is shown, which includes a start button SB1, a stop button SB2, a contactor coil KM, and a contactor auxiliary contact KM1, wherein the start button SB1 is connected to the contactor coil KM through the stop button SB2, the contactor auxiliary contact KM1 is connected in parallel to the start button SB1, when the start button SB1 is pressed, the contactor is pulled in, the contactor auxiliary contact KM1 is also pulled in, when the start button is released, the contactor auxiliary contact KM1 is still pulled in, and the contactor coil KM is kept on. When the stop button SB2 is released, the contactor auxiliary contact KM1 is released, the start button SB1 and the contactor auxiliary contact KM1 are both opened, and the contactor coil KM remains opened.

The start-stop control in the prior art is local control, requires personnel to be on site, is very inconvenient, and is also controlled by wireless short distance or has very high cost by GPRS control cost.

Therefore, it is necessary to provide an NB-IOT remote switching gate control system for the above-mentioned problems.

Disclosure of Invention

In view of the above-mentioned deficiencies in the prior art, the present invention provides an NB-IOT remote switching control system to solve the above-mentioned problems.

An NB-IOT remote switching control system comprises a voltage reduction module, a power supply circuit, an NB-IOT transmitting circuit, a remote control module, an NB-IOT receiving circuit, a relay control circuit, a photoelectric isolation switch circuit, a main chip circuit, a first relay coil and a second relay coil, wherein the voltage reduction module is connected with the NB-IOT receiving circuit and the relay control circuit through the power supply circuit, the relay control circuit and the NB-IOT receiving circuit are electrically connected with the main chip circuit, the photoelectric isolation switch circuit is connected with the main chip circuit, the relay control circuit comprises a first coil control circuit and a second coil control circuit, the first coil control circuit is connected with the first relay coil, the second coil control circuit is connected with the second relay coil, and the first relay coil is provided with a normally open contact, the second relay coil is provided with a normally closed contact, the normally open contact is connected with the contactor coil sequentially through the normally closed contact and the stop button, and the normally open contact is respectively connected with the auxiliary contact of the contactor and the start button in parallel; the remote control module is wirelessly connected with the NB-IOT receiving circuit through the NB-IOT transmitting circuit.

Preferably, the main chip circuit includes a main chip, a seventh pin of the main chip is connected to an eighth pin of the main chip sequentially through a third capacitor and a fourth capacitor, a first oscillator is connected between the seventh pin and the eighth pin of the main chip, a ninth pin of the main chip is grounded through a sixth capacitor, and a tenth pin of the main chip is grounded through a fifth capacitor.

Preferably, the NB-IOT receiving circuit includes a communication chip and an antenna module, a third pin of the communication chip is connected to a first pin of the main chip, a fourth pin of the communication chip is connected to a second pin of the main chip, a twenty-second pin and a twenty-third pin of the communication chip are both grounded through an eighth capacitor and a ninth capacitor, and a thirty-fourth pin and a thirty-fifth pin of the communication chip are connected to the antenna module.

Preferably, first coil control circuit includes first triode, the base of first triode is passed through the third resistive connection to the projecting pole of first triode, the twenty ninth pin of second resistive connection owner chip is passed through to the base of first triode, the one end of first coil, first diode and first resistance is connected respectively to the collecting electrode of first triode, the other end of first coil is connected through first emitting diode to the other end of first resistance, the other end of first coil is connected to the other end of first diode.

Preferably, the second coil control circuit includes a second triode, an emitter of the second triode is connected with a base of the second triode through a sixth resistor, the base of the second triode is connected with a thirtieth pin of the main chip through a fifth resistor, a collector of the second triode is connected with one end of a second coil, a second diode and a fourth resistor respectively, the other end of the fourth resistor is connected with the other end of the second coil through a second light emitting diode, and the other end of the second diode is connected with the other end of the second coil.

Preferably, the photoelectric isolation switch circuit comprises a photoelectric coupler, one end of the photoelectric coupler is respectively connected with the seventh resistor, the tenth capacitor and the sixteenth pin of the main chip, and the other end of the photoelectric coupler is connected with the live wire of the mains supply through the third diode and the eighth resistor in sequence.

Compared with the prior art, the invention has the beneficial effects that: the invention is provided with an NB-IOT transmitting circuit, a remote control module, an NB-IOT receiving circuit and a relay control circuit, wherein the remote control module transmits an opening or closing signal to the NB-IOT receiving circuit through the NB-IOT transmitting circuit, and the NB-IOT receiving circuit controls the opening or closing signal to the opening and closing circuit through a main chip and the relay control circuit, thereby achieving the remote control effect.

Drawings

FIG. 1 is a prior art switching on and off control circuit diagram;

FIG. 2 is a schematic diagram of an NB-IOT remote switching gate control system of the present invention;

FIG. 3 is a circuit diagram of a main chip of the present invention;

FIG. 4 is a circuit diagram of the NB-IOT receiver of the present invention;

FIG. 5 is a circuit diagram of the optoelectronic isolating switch of the present invention;

FIG. 6 is a first coil control circuit diagram of the present invention;

fig. 7 is a second coil control circuit diagram of the present invention.

Detailed Description

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.

As shown in fig. 2 in combination with fig. 3 to 7, an NB-IOT remote switching control system includes a voltage-reducing module 1, a power supply circuit 2, an NB-IOT transmitting circuit 4, a remote control module 5, an NB-IOT receiving circuit 3, a relay control circuit 8, a photoelectric isolation switch circuit 7, a main chip circuit 6, a first relay coil, and a second relay coil, wherein the voltage-reducing module 1 is connected to the NB-IOT receiving circuit 3 and the relay control circuit 8 through the power supply circuit 2, the relay control circuit 8 and the NB-IOT receiving circuit 3 are both electrically connected to the main chip circuit 6, the photoelectric isolation switch circuit 7 is connected to the main chip circuit 6, the relay control circuit 8 includes a first coil control circuit and a second coil control circuit, the first coil control circuit is connected to a first relay coil J1, the second coil control circuit is connected with a second relay coil J2, the first relay coil J1 is provided with a normally open contact KA1, the second relay coil J2 is provided with a normally closed contact KA2, the normally open contact KA1 is connected with a contactor coil KM sequentially through a normally closed contact KA2 and a stop button SB2, and the normally open contact KA1 is respectively connected with a contactor auxiliary contact KM1 and a start button SB1 in parallel; the remote control module 5 is wirelessly connected to the NB-IOT receiving circuit 3 through the NB-IOT transmitting circuit 4.

Further, the main chip circuit 6 includes a main chip U1, a seventh pin of the main chip U1 is connected to an eighth pin of the main chip U1 sequentially through a third capacitor C3 and a fourth capacitor C4, a first resonator JZ1 is connected between the seventh pin and the eighth pin of the main chip U1, a ninth pin of the main chip U1 is grounded through a sixth capacitor C6, and a tenth pin of the main chip U1 is grounded through a fifth capacitor C5.

Further, the NB-IOT receiving circuit 3 includes a communication chip U2 and an antenna module T1, a third pin (RXD2) of the communication chip U2 is connected to a first pin (RXD2) of the main chip U1, a fourth pin (RXD2) of the communication chip U2 is connected to a second pin ((RXD2) of the main chip U1, the twenty-second pin and the twenty-third pin of the communication chip U2 are both grounded through an eighth capacitor C8 and a ninth capacitor C9, and the thirty-fourth pin and the thirty-fifth pin of the communication chip U2 are connected to the antenna module T1.

Further, the first coil control circuit comprises a first triode BG1, an emitter of the first triode BG1 is connected with a base of the first triode BG1 through a third resistor R3, the base of the first triode BG1 is connected with a twenty-ninth pin (P00) of the main chip U1 through a second resistor R2, a collector of the first triode is connected with one end of the first coil JDQ1, one end of a first diode D1 and one end of a first resistor R1, the other end of the first resistor R2 is connected with the other end of the first coil JDQ1 through a first light emitting diode DL1, and the other end of the first diode D1 is connected with the other end of the first coil JDQ 1.

Further, the second coil control circuit includes a second triode BG2, an emitter of the second triode BG2 is connected to a base of the second triode BG2 through a sixth resistor R6, the base of the second triode BG2 is connected to a thirtieth pin (P01) of the main chip U1 through a fifth resistor R5, a collector of the second triode BG2 is connected to one end of a second coil JDQ2, one end of a second diode D2 and one end of a fourth resistor R4, the other end of the fourth resistor R4 is connected to the other end of the second coil JDQ2 through a second light emitting diode DL2, and the other end of the second diode D2 is connected to the other end of the second coil JDQ 2.

Further, the optoelectronic isolation switch circuit 7 includes a photo-coupler OP1, one end of the photo-coupler OP1 is respectively connected to a seventh resistor R7, a tenth capacitor C10 and a sixteenth pin (INT1) of the main chip U1, and the other end of the photo-coupler OP1 is sequentially connected to the live wire of the commercial power through a third diode D3 and an eighth resistor R8.

Compared with the prior art, the invention has the beneficial effects that: the invention is provided with an NB-IOT transmitting circuit, a remote control module, an NB-IOT receiving circuit and a relay control circuit, wherein the remote control module transmits an opening or closing signal to the NB-IOT receiving circuit through the NB-IOT transmitting circuit, and the NB-IOT receiving circuit controls the opening or closing signal to the opening and closing circuit through a main chip and the relay control circuit, thereby achieving the remote control effect.

The voltage reduction module converts commercial power (220V AC) into low-voltage current through a transformer, and the power supply circuit respectively improves the voltage and the current for the relay control circuit, the main chip and the NB-IOT receiving circuit.

The NB-IoT (Narrow Band Internet of Things, NB-IoT narrowband cellular network) network transmission adopted between the NB-IOT transmitting circuit and the NB-IOT receiving circuit has the characteristics of low power consumption, wide coverage and large connection.

The photoelectric isolating switch converts an electric signal into an optical signal, then converts the optical signal into the electric signal, has good isolating effect on the input and output electric signals, can avoid the influence of large voltage on the control chip on one hand, and can detect the voltage change of the main chip on the other hand.

As shown in fig. 5, one end of an eighth resistor of the optoelectronic isolating switch of the present invention is connected to a 220V voltage live wire, the voltage is reduced after passing through the eighth resistor, then the voltage is emitted through a light emitting diode (led) of a photo-coupler (composed of a light emitting diode and a photo-resistor), and after the voltage is emitted, the photo-resistor senses an optical signal and converts the optical signal into a current signal to be transmitted to the main chip.

The working principle is as follows:

when the remote switch-on is required, a switch-on instruction is sent by the remote control module 5, wherein the switch-on instruction is wirelessly transmitted to the NB-IOT receiving circuit 3 through the NB-IOT transmitting circuit 4, the NB-IOT receiving circuit 3 transmits the switch-on instruction to the relay control circuit 8 through the main chip circuit 6, the first coil circuit of the relay control circuit 8 drives the first coil to be switched on for 3 seconds and then is released (after the first relay coil J1 is switched on, the normally open contact KA1 of the first relay coil J1 is switched on, the normally open contact KA1 is switched on to switch on the contactor coil KM, the contactor auxiliary contact KM1 is switched on, and then the switch-on circuit is switched on), the contactor auxiliary contact KM1 is sucked, the contactor coil KM is kept switched on, and then the remote switch-on effect is achieved.

When the remote switch-off is required, a switch-off instruction is sent by the remote control module 5, wherein the switch-off instruction is wirelessly transmitted to the NB-IOT receiving circuit 3 through the NB-IOT transmitting circuit 4, the NB-IOT receiving circuit 3 transmits the switch-off instruction to the relay control circuit 8 through the main chip circuit 6, the second coil circuit of the relay control circuit 8 drives the second coil to be switched on for 3 seconds and then to be released (after the second relay coil J2 is switched on, the normally closed contact of the second relay coil J2 is switched off KA2, and then the contactor coil KM is powered off, the contactor auxiliary contact KM1 is switched off, and then the switch-off circuit is switched off), and as the normally open contact KA1, the starting button SB1 and the contactor auxiliary contact KM1 of the first relay coil J2 are switched off, the contactor KM is kept switched off, and then the remote switch-off function is achieved.

When manual field operation is adopted, when the switch-on is started, the starting button SB1 is pressed, the contactor coil KM is electrified, the contactor auxiliary contact KM1 is electrified in a suction mode, after the starting button SB1 is released, the contactor coil KM is continuously electrified, the contactor auxiliary contact KM1 keeps the electrified state, and the circuit is switched on.

When the switch-off (disconnection) is started, the stop button SB2 is pressed, the contactor coil KM is not electrified, the contactor auxiliary contact KM1 is disconnected, and after the stop button SB2 is released, the contactor coil KM is not electrified continuously, the contactor auxiliary contact KM1 keeps the disconnected state, and the circuit is switched off (disconnected).

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.