CN211828542U - Switch control system - Google Patents
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- CN211828542U CN211828542U CN202020437305.XU CN202020437305U CN211828542U CN 211828542 U CN211828542 U CN 211828542U CN 202020437305 U CN202020437305 U CN 202020437305U CN 211828542 U CN211828542 U CN 211828542U
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Abstract
The embodiment of the utility model discloses on-off control system. The switch control system comprises a communication control module and a distributed switch control module; the communication control module receives a control instruction of an external upper computer through the communication unit, and controls the first direct current carrier communication circuit to output a direct current carrier signal according to the control instruction so as to drive the distributed switch control module to work; the voltage zero-crossing detection circuit in the distributed switch control module performs zero-crossing detection on alternating current output by the alternating current input power supply, and outputs a zero-crossing signal when detecting a zero-crossing state; and when the master controller receives the zero-crossing signal, the master controller controls the transmission path of the power driving circuit and the external power load to be conducted. The embodiment of the utility model provides an effect such as miniaturized, modularization and high-power output control of on-off control system has been realized.
Description
Technical Field
The embodiment of the utility model provides a relate to the on-off control field, especially relate to an on-off control system.
Background
In an industrial and lighting circuit, a switching control device is generally used to connect an ac power supply and an external electric load, and to control switching between the ac power supply and the external electric load.
The conventional switch control device mainly includes a multi-loop power switch control circuit. The multi-loop power switch control circuit adopts an alternating current contactor as a switch control device, but the existing alternating current contactor cannot realize the switch control of a high-power electric load.
In addition, the conventional switch control device further includes an independent module composed of an external controller and an additional current transformer, and the independent module is electrically connected with the multi-loop power switch control circuit through an external line. The external controller is used for controlling the multi-loop power switch control circuit, the current transformer is used for collecting and detecting an external alternating current power supply, and the current transformer is matched with the external alternating current power supply to complete the switch control between the alternating current power supply and an external electric load. Obviously, the switch control device at least comprising the external controller, the additional current transformer and the multi-loop power switch control circuit has the problems of large occupied space, complex wiring, high failure rate and the like.
SUMMERY OF THE UTILITY MODEL
An embodiment of the utility model provides an on-off control system to realize effects such as miniaturization, modularization and high-power output control of on-off control device.
The embodiment of the utility model provides a switch control system, this switch control system includes: communication control module and distribution switch control module.
The communication control module comprises a communication unit and a first direct current carrier communication circuit, and is used for receiving a control instruction of an external upper computer through the communication unit and controlling the first direct current carrier communication circuit to output a direct current carrier signal according to the control instruction so as to drive the distributed switch control module to work;
the distributed switch control module comprises an alternating current input power supply, a main controller, a voltage zero-crossing detection circuit and a power driving circuit;
the alternating-current input power supply is respectively electrically connected with the input end of the voltage zero-crossing detection circuit and the input end of the power driving circuit, the output end of the voltage zero-crossing detection circuit is electrically connected with the input end of the main controller, the output end of the main controller is electrically connected with the control end of the power driving circuit, and the output end of the power driving circuit is electrically connected with an external power load;
the voltage zero-crossing detection circuit is used for carrying out zero-crossing detection on alternating current output by the alternating current input power supply and outputting a zero-crossing signal when a zero-crossing state is detected;
the main controller is used for controlling the power driving circuit to be conducted when the zero-crossing signal is received so as to conduct the transmission path of the alternating current input power supply and the external power load.
Optionally, the power driving circuit includes a switch control circuit, and the switch control circuit includes a thyristor driving circuit, a thyristor, a magnetic latching relay, and a magnetic latching relay driving circuit;
the main controller is electrically connected with the silicon controlled rectifier driving circuit and the magnetic latching relay driving circuit respectively; the silicon controlled rectifier driving circuit is electrically connected with the control end of the silicon controlled rectifier; the magnetic latching relay driving circuit is electrically connected with the control end of the magnetic latching relay; the controllable silicon is connected with the magnetic latching relay in parallel, the controllable silicon is electrically connected with the alternating current input power supply with the parallel input end of the magnetic latching relay, and the controllable silicon is electrically connected with the external electric load with the parallel output end of the magnetic latching relay;
the main controller is used for controlling the silicon controlled rectifier driving circuit to drive the silicon controlled rectifier to be connected according to the zero-crossing signal, then controlling the magnetic latching relay driving circuit to drive the magnetic latching relay to be connected or disconnected, and sequentially controlling the silicon controlled rectifier to be connected or disconnected when the magnetic latching relay is connected or disconnected.
Optionally, the power driving circuit further includes a power collecting circuit;
the power acquisition circuit is electrically connected between the external power load and the parallel output ends of the silicon controlled rectifier and the magnetic latching relay;
the power acquisition circuit is used for carrying out power acquisition on the alternating current input power flowing into the external power load to feed back the power abnormal condition of the external power load when the master controller controls the switch control circuit to be switched on so as to enable the alternating current input power supply to be switched on with the transmission path of the external power load.
Optionally, the distributed switch control module further includes a second dc carrier communication circuit and a dc converter;
the second direct current carrier communication circuit is electrically connected with the first direct current carrier communication circuit, the second direct current carrier communication circuit is electrically connected with the input end of the direct current converter, and the output end of the direct current converter is electrically connected with the power driving circuit and the main controller respectively.
Optionally, the distributed switch control module includes N power driving circuits, where N is greater than or equal to 2;
the power driving circuit is arranged corresponding to the external power load, the input end of each power driving circuit is electrically connected with the alternating current input power supply, and the output end of each power driving circuit is electrically connected with the corresponding external power load.
Optionally, the communication control module further includes an ac/dc power converter;
the alternating current-direct current power supply converter is electrically connected with the communication unit and the first direct current carrier communication circuit respectively.
Optionally, the communication control module further includes a microprocessor and a backup battery, the microprocessor is electrically connected to the communication unit, the first dc carrier communication circuit and the ac/dc power converter, respectively, and the backup battery is electrically connected to the ac/dc power converter;
the microprocessor is used for controlling the first direct current carrier communication circuit to output the direct current carrier signal to the distribution switch control module according to the control instruction, and is also used for supplying power by adopting the backup battery when judging that the alternating current-direct current power supply converter is powered off, and sending the power-off information to the external upper computer through the communication unit.
Optionally, the communication unit is a bluetooth communication module, a ZigBee communication module, or a wireless wide area network.
In the embodiment of the utility model, the communication control module receives the control instruction of the external upper computer through the communication unit, and controls the first direct current carrier communication circuit to output the direct current carrier signal according to the control instruction so as to drive the distributed switch control module to work; the voltage zero-crossing detection circuit outputs a zero-crossing signal when detecting a zero-crossing state; and then the master controller controls the conduction of the transmission path of the power driving circuit and the external power load when receiving the zero-crossing signal. The problems that a main controller is connected with an external power load through controlling a power driving circuit such as a low-power switch device, and the high-power output control cannot be realized by the low-power switch device are solved, and meanwhile, the problems that an external controller and the power driving circuit are used as independent modules in the prior art, the external controller is electrically connected with the power driving circuit through an external circuit, so that the whole switch control system is large in occupied space, complex in wiring, high in fault rate and the like are solved, and the effects of miniaturization, modularization, high-power output control and the like of the switch control system are realized.
Drawings
Fig. 1 is a block diagram of a switch control system according to a first embodiment of the present invention;
fig. 2 is a block diagram of a switch control system according to a second embodiment 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.
Example one
Fig. 1 is a block diagram of a switch control system according to a first embodiment of the present invention, as shown in fig. 1, the switch control system includes a communication control module 10 and a distributed switch control module 20; the communication control module 10 includes a communication unit 11 and a first dc carrier communication circuit 12, and the communication control module 10 is configured to receive a control instruction of an external upper computer through the communication unit 11, and control the first dc carrier communication circuit 12 to output a dc carrier signal according to the control instruction so as to drive the distributed switch control module 20 to operate. The distributed switch control module 20 includes an ac input power supply 21, a master 22, a voltage zero-crossing detection circuit 23, and a power drive circuit 24. The alternating current input power supply 21 is respectively electrically connected with the input end of the voltage zero-crossing detection circuit 23 and the input end of the power driving circuit 24, the output end of the voltage zero-crossing detection circuit 23 is electrically connected with the input end of the main controller 22, the output end of the main controller 22 is electrically connected with the control end of the power driving circuit 24, and the output end of the power driving circuit 24 is electrically connected with an external power load. The voltage zero-crossing detection circuit 23 is configured to perform zero-crossing detection on the alternating current output by the alternating current input power supply 21, and output a zero-crossing signal when a zero-crossing state is detected. The main controller 22 is configured to control the power driving circuit 24 to be turned on when receiving the zero-crossing signal, so as to turn on the transmission path between the ac input power source 21 and the external power load.
Wherein, for the realization to on-off control system's intelligent on-off control, the embodiment of the utility model provides an on-off control system's on-off control process does: the upper computer sends out a control instruction, the communication control module 10 of the switch control system receives the control instruction of the upper computer through the communication unit 11, the communication unit 11 receives the control instruction and sends the control instruction to the first direct current carrier communication circuit 12, and the first direct current carrier communication circuit 12 generates a direct current carrier signal according to the control instruction and outputs the direct current carrier signal to the distributed switch control module 20 so as to drive the distributed switch control module 20 to work. When the master 22 in the distributed switch control module 20 receives the dc carrier signal, the distributed switch control module 20 is powered on to enable the devices therein to operate normally.
The voltage zero-crossing detection circuit 23 performs zero-crossing detection on the alternating current output from the alternating current input power supply 21 and transmits a zero-crossing signal to the main controller 22 when a zero-crossing state is detected. When the main controller 22 receives the zero-crossing signal output by the voltage zero-crossing detection circuit 23, it controls the power driving circuit 24 to be turned on, so that the transmission path between the ac input power supply 21 and the external power load is turned on. The power driving circuit 24 is electrically connected to the ac input power source 21, and the power driving circuit 24 may be formed by a high power switching device, so that the power driving circuit 24 may receive a high power ac power output from the ac input power source 21, and when the power driving circuit 24 is turned on, the high power ac power of the ac input power source 21 may be supplied to an external power load, and the power driving circuit 24 may perform switching control on the high power load. In the non-zero-crossing state, the master controller 22 controls the power driving circuit 24 to be turned off so as to disconnect the ac input power source from the external power load.
In addition, a main controller 22, a power driving circuit 24 and an alternating current input power supply 23 are integrated in the distributed switch control module 20, and the main controller 22 controls the power driving circuit 24 to be conducted when receiving the zero-crossing signal, so that the alternating current input power supply 21 is conducted with a transmission path of an external power load, and thus the distributed switch control module 20 as a whole realizes modularization. In addition, compared with the prior art, the external controller and the power driving circuit are used as independent modules, the external controller and the power driving circuit need to be electrically connected through an external circuit, the distributed switch control module 20 is used as a whole, the internal structure is simple, the wiring mode is simple, and the occupied space of the switch control system and the device failure rate are reduced.
Example two
On the basis of the first embodiment, further optimization is performed, and optionally, fig. 2 is a structural block diagram of a switch control system provided by the second embodiment of the present invention, as shown in fig. 2, the power driving circuit 24 includes a switch control circuit 242, and the switch control circuit 242 includes a thyristor driving circuit 2421, a thyristor 2422, a magnetic latching relay 2423, and a magnetic latching relay driving circuit 2424;
referring to fig. 2, the main controller 22 is electrically connected to the thyristor driving circuit 2421 and the magnetic latching relay driving circuit 2424, respectively; the controlled silicon driving circuit 2421 is electrically connected with the control end of the controlled silicon 2422; the magnetic latching relay drive circuit 2424 is electrically connected with the control end of the magnetic latching relay 2423; thyristor 2422 is connected in parallel with magnetic latching relay 2423, thyristor 2422 is electrically connected with ac input power supply 21 with the parallel input end of magnetic latching relay 2423, and thyristor 2422 is electrically connected with the parallel output end of magnetic latching relay 2423 with an external consumer.
The main controller 22 controls the silicon controlled rectifier drive circuit 2421 to drive the silicon controlled rectifier 2422 to be conducted according to the zero-crossing signal, then controls the magnetic latching relay drive circuit 2424 to drive the magnetic latching relay 2423 to be conducted, and sequentially controls the silicon controlled rectifier 2422 to be turned off when the magnetic latching relay 2423 is conducted.
The main controller 22 controls the thyristor driving circuit 2421 to drive the thyristor 2422 to be conducted according to the zero-crossing signal, so that the zero voltage triggers the thyristor 2422 to be switched on, and the switching loss of the thyristor 2422 can be reduced. It can minimize the loss of thyristor 2422 and thus can prolong the life of thyristor 2422.
Generally, a magnetic latching relay generates an electromagnetic effect by using an electromagnetic coil under a certain voltage, and then generates a magnetic field to promote a movable contact and a static contact of the magnetic latching relay to be electrically contacted or released, the contact is generally made of silver alloy materials, the contact resistance is small, the heating value is low, and the magnetic latching relay can be suitable for controlling a high-power load. However, in the contact and release process of the contacts of the magnetic latching relay, current is applied between the contacts, electric arcs are generated in the process of conducting and cutting off the current, the temperature of the electric arcs is high, the contacts can be burnt, and finally the magnetic latching relay can be caused to fail. And the thyristor is an electronic switching device as a semiconductor device driving current load, and because of the existence of fixed PN junction voltage, when continuously conducting large current, the thyristor 2422 can generate a large amount of heat, which can cause a large amount of heat loss.
Therefore, in the embodiment, the main controller 22 firstly controls the thyristor drive circuit 2421 to drive the thyristor 2422 to be conducted according to the zero-crossing signal, that is, the thyristor 2422 is conducted in the state of the instantaneous large-current load, and then controls the magnetic latching relay drive circuit 2424 to drive the magnetic latching relay 2423 to be conducted, so that the problem that the magnetic latching relay 2424 bears the transient large-current load and further generates an electric arc is avoided, and when the magnetic latching relay 2423 is sequentially conducted, the thyristor 2422 is controlled to be turned off, so that the problems of heat loss and the like caused by long-term conduction of the thyristor 2422 are avoided. Similarly, when the switch control circuit 242 is to be turned off, the main controller 22 firstly controls the thyristor driving circuit 2421 to drive the thyristor 2422 to be turned on according to the zero-crossing signal, and then controls the magnetic latching relay driving circuit 2424 to drive the magnetic latching relay 2423 to be turned off, and sequentially controls the thyristor 2422 to be turned off when the magnetic latching relay 2423 is turned off, so that the problem that the magnetic latching relay 2424 generates electric arc due to instantaneous large current when the switch control circuit 242 is turned off is also avoided.
Optionally, with continued reference to fig. 2, the power driving circuit 24 further includes a power acquisition circuit 241;
the power acquisition circuit 241 is electrically connected between an external electric load and the parallel output ends of the thyristor 2422 and the magnetic latching relay 2423;
the power collecting circuit 241 is configured to collect power of the ac input power flowing into the external power load to feed back a power abnormality of the external power load when the main controller 22 controls the switch control circuit 242 to be turned on to turn on the transmission path between the ac input power source 21 and the external power load.
When the ac input power supply 21 is connected to the transmission path of the external power load, the power acquisition circuit 241 may acquire power of the ac input power flowing through the switch control circuit 242, and when the ac input power acquired by the power acquisition circuit 241 flowing through the switch control circuit 242 is abnormal, the power of the external power load may be fed back to some extent to perform subsequent power-off operation, so as to implement power protection of the external power load; when the power collection circuit 241 collects that the ac power flowing through the switch control circuit 242 is normal, it is possible to feed back that the power of the external electric load is normal.
Optionally, referring to fig. 2, the distributed switch control module 20 further includes a second dc carrier communication circuit 25 and a dc converter 26;
the second dc carrier communication circuit 25 is electrically connected to the first dc carrier communication circuit 12, the second dc carrier communication circuit 25 is electrically connected to an input terminal of the dc converter 26, and an output terminal of the dc converter 26 is electrically connected to the power driving circuit 24 and the main controller 22, respectively.
The second dc carrier communication circuit 25 is electrically connected to the first dc carrier communication circuit 12 through a cable, and receives the communication signal and the transmitted dc power from the first dc carrier communication circuit 12, and the dc converter 26 receives the dc power transmitted by the first dc carrier communication circuit 12, and further steps down the dc power to provide a safe voltage for each device in the main controller 22 and the power driving circuit 24.
Optionally, the distributed switch control module 20 includes N power driving circuits 24, where N is greater than or equal to 2. One power driving circuit 24 is provided corresponding to one external electric load, an input end of each power driving circuit 24 is electrically connected to the ac input power supply 21, and an output end of the power driving circuit 24 is electrically connected to the corresponding external electric load.
The distributed switch control module 20 includes N power driving circuits 24, and the main controller 22 can flexibly control conduction between at least one power driving circuit 24 and at least one external power load correspondingly disposed, so that the ac input power supply 21 supplies power to the external power loads of different loops through at least one power driving circuit 24. It should be noted that, in an actual industrial and lighting circuit, there are usually multiple external electric loads, one power driving circuit 24 is provided corresponding to one external electric load to realize independent switching control of the external electric load, and the power driving circuit 24 for controlling the external electric load in multiple ways is required to be provided in a switching control system for multiple external electric loads based on the independent switching control of the external electric loads, so as to meet the requirements in different scenarios. The main controller 22 in the distributed switch module 20 independently drives the N power driving circuits 24, so that the flexibility and expandability of controlling the conduction of the power driving circuits 24 and an external load circuit by the main controller 22 are improved.
Optionally, referring to fig. 2, the communication control module 10 further includes an ac/dc power converter 13. The ac/dc power converter 13 is electrically connected to the communication unit 11 and the first dc carrier communication circuit 12, respectively.
The ac/dc power converter 13 is a switching power supply, and the ac signal provided by the ac/dc power converter can be rectified and filtered by a high voltage to obtain a dc high voltage, which is then output to power the communication unit 11 and the first dc carrier communication circuit 12. Specifically, the ac/dc converter 13 has a plurality of output terminals, which are electrically connected to the communication unit 11 and the first dc carrier communication circuit 12, respectively, and can independently supply power to the communication unit 11 and the first dc carrier communication circuit 12, and the voltages of the communication unit and the first dc carrier communication circuit 12 may be different.
Optionally, the communication control module 10 further includes a microprocessor 14 and a backup battery 15, the microprocessor 14 is electrically connected to the communication unit 11, the first dc carrier communication circuit 12, and the ac/dc power converter 13, respectively, and the backup battery 15 is electrically connected to the ac/dc power converter 13;
the microprocessor 14 is used for controlling the first direct current carrier communication circuit 12 to output a direct current carrier signal to the distributed switch control module 20 according to the control instruction, and is also used for supplying power by using the backup battery 15 when judging that the alternating current-direct current power supply converter 13 is powered off, and sending power-off information to an external upper computer through the communication unit 11.
The microprocessor 14 is electrically connected with the ac/dc power converter 13, and can judge whether the ac/dc power converter 13 is powered off, if the ac/dc power converter 13 is in a power-off state, the backup battery 15 supplies power to the ac/dc converter 13 so that the microprocessor 14 and the communication unit 11 work normally, at this time, the microprocessor 14 can send detected power-off information to the external upper computer through the communication unit 11, and the external upper computer sends an operation instruction to the communication control module 10 to execute the power-off operation of the subsequent distribution switch control module 20. Or when the microprocessor 14 detects that the ac/dc power converter 13 is in the power-off state, the backup battery 15 is used to supply power to the ac/dc converter 13, so as to transmit the communication signals between the communication control module 10 and the distributed control module 20, so as to control the distributed control module 20 to perform the power-off operation or the power supply operation.
Optionally, the communication unit 11 is a bluetooth communication module, a ZigBee communication module, or a wireless wide area network.
In the embodiment of the present invention, the power driving circuit 24 includes a power collecting circuit 241 and a switch control circuit 242, and the switch control circuit 242 includes a thyristor driving circuit 2421, a thyristor 2422, a magnetic latching relay 2423 and a magnetic latching relay driving circuit 2424; the main controller 22 is used for controlling the silicon controlled rectifier drive circuit 2421 according to the zero-crossing signal to drive the silicon controlled rectifier 2422 to be conducted, then controlling the magnetic latching relay drive circuit 2424 to drive the magnetic latching relay 2423 to be conducted, and sequentially controlling the silicon controlled rectifier 2422 to be turned off when the magnetic latching relay 2423 is conducted, so that on the basis that the switch control system controls high-power output, the generation of an electric arc of the magnetic latching relay 2423 in the switch control circuit 242 is avoided, and the heat loss of the silicon controlled rectifier 2422 is reduced; the distributed switching module 20 additionally includes N power driver circuits 24; flexibility and scalability in which the master 22 controls conduction of the transmission path of the power driving circuit 24 to the external power load are improved.
It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. 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 with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.
Claims (8)
1. A switch control system, comprising: the communication control module and the distribution switch control module;
the communication control module comprises a communication unit and a first direct current carrier communication circuit, and is used for receiving a control instruction of an external upper computer through the communication unit and controlling the first direct current carrier communication circuit to output a direct current carrier signal according to the control instruction so as to drive the distributed switch control module to work;
the distributed switch control module comprises an alternating current input power supply, a main controller, a voltage zero-crossing detection circuit and a power driving circuit;
the alternating-current input power supply is respectively electrically connected with the input end of the voltage zero-crossing detection circuit and the input end of the power driving circuit, the output end of the voltage zero-crossing detection circuit is electrically connected with the input end of the main controller, the output end of the main controller is electrically connected with the control end of the power driving circuit, and the output end of the power driving circuit is electrically connected with an external power load;
the voltage zero-crossing detection circuit is used for carrying out zero-crossing detection on alternating current output by the alternating current input power supply and outputting a zero-crossing signal when a zero-crossing state is detected;
the main controller is used for controlling the power driving circuit to be conducted when the zero-crossing signal is received so as to conduct the transmission path of the alternating current input power supply and the external power load.
2. The switch control system of claim 1, wherein the power drive circuit comprises a switch control circuit comprising a thyristor drive circuit, a thyristor, a magnetic latching relay, and a magnetic latching relay drive circuit;
the main controller is electrically connected with the silicon controlled rectifier driving circuit and the magnetic latching relay driving circuit respectively; the silicon controlled rectifier driving circuit is electrically connected with the control end of the silicon controlled rectifier; the magnetic latching relay driving circuit is electrically connected with the control end of the magnetic latching relay; the controllable silicon is connected with the magnetic latching relay in parallel, the controllable silicon is electrically connected with the alternating current input power supply with the parallel input end of the magnetic latching relay, and the controllable silicon is electrically connected with the external electric load with the parallel output end of the magnetic latching relay;
the main controller is used for controlling the silicon controlled rectifier driving circuit to drive the silicon controlled rectifier to be connected according to the zero-crossing signal, then controlling the magnetic latching relay driving circuit to drive the magnetic latching relay to be connected or disconnected, and sequentially controlling the silicon controlled rectifier to be connected or disconnected when the magnetic latching relay is connected or disconnected.
3. The switch control system of claim 2, wherein the power driving circuit further comprises a power harvesting circuit;
the power acquisition circuit is electrically connected between the external power load and the parallel output ends of the silicon controlled rectifier and the magnetic latching relay;
the power acquisition circuit is used for carrying out power acquisition on the alternating current input power flowing into the external power load to feed back the power abnormal condition of the external power load when the master controller controls the switch control circuit to be switched on so as to enable the alternating current input power supply to be switched on with the transmission path of the external power load.
4. The switch control system of claim 1, wherein the distributed switch control module further comprises a second dc carrier communication circuit and a dc converter;
the second direct current carrier communication circuit is electrically connected with the first direct current carrier communication circuit, the second direct current carrier communication circuit is electrically connected with the input end of the direct current converter, and the output end of the direct current converter is electrically connected with the power driving circuit and the main controller respectively.
5. The switch control system of claim 1, wherein the distributed switch control module includes N of the power driver circuits, where N is greater than or equal to 2;
the power driving circuit is arranged corresponding to the external power load, the input end of each power driving circuit is electrically connected with the alternating current input power supply, and the output end of each power driving circuit is electrically connected with the corresponding external power load.
6. The switch control system of claim 1, wherein the communication control module further comprises a ac-to-dc power converter;
the alternating current-direct current power supply converter is electrically connected with the communication unit and the first direct current carrier communication circuit respectively.
7. The switch control system according to claim 6, wherein the communication control module further comprises a microprocessor and a backup battery, the microprocessor is electrically connected to the communication unit, the first direct current carrier communication circuit and the ac/dc power converter, respectively, and the backup battery is electrically connected to the ac/dc power converter;
the microprocessor is used for controlling the first direct current carrier communication circuit to output the direct current carrier signal to the distribution switch control module according to the control instruction, and is also used for supplying power by adopting the backup battery when judging that the alternating current-direct current power supply converter is powered off, and sending the power-off information to the external upper computer through the communication unit.
8. The switch control system of claim 1, wherein the communication unit is a bluetooth communication module, a ZigBee communication module, or a wireless wide area network.
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|---|---|---|---|
| CN202020437305.XU CN211828542U (en) | 2020-03-30 | 2020-03-30 | Switch control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020437305.XU CN211828542U (en) | 2020-03-30 | 2020-03-30 | Switch control system |
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| CN211828542U true CN211828542U (en) | 2020-10-30 |
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