Multifunctional terminal reset device

Abstract

The utility model discloses a multifunctional terminal reset device which comprises a signal transceiver, an AC-DC power supply module, a single-chip microcomputer chip, a rotary dial switch and a relay control module. The power grid power supply is used for providing power, and the AC-DC power supply module is used for converting voltage and supplying power to each module; and the rotary dial switch is used for setting the power-off time for restarting the terminal equipment. According to the utility model, terminal working state signals can be obtained through the signal transceiver, and terminal restart is realized by using the single-chip microcomputer, the rotary dial switch and the relay control module.

Description

Technical Field

[0001] This utility model relates to the field of power equipment technology, and more specifically to a multifunctional terminal reset device. Background Technology

[0002] Currently, electricity meters can be remotely controlled and read remotely. As the hub for remote control and reading of electricity meters, the data acquisition terminal is directly related to the remote operation of restoring power to customers who have experienced power outages, as well as the success rate and accuracy of transmitting meter data to the upper-level platform.

[0003] During routine use and maintenance, operations and maintenance personnel found that the data acquisition terminals frequently crashed due to weather changes and frequent operations. Furthermore, the built-in software restart function of the terminals was ineffective in restoring them to normal operation. This necessitated on-site power-off operations to restart the terminals, consuming significant time and greatly increasing on-site maintenance costs. The inability to promptly restore the terminals to normal operation reduced the stability and accuracy of the data acquisition system. Summary of the Invention

[0004] In view of this, the present invention provides a multifunctional terminal reset device, which monitors the terminal's working status through a signal transceiver, sends signals in real time, and if signal transmission is interrupted, determines that the terminal is in a frozen or other abnormal state, cuts off the terminal power supply, and then closes the power supply after a certain delay to restart the terminal and restore its normal operation. This achieves the goal of reducing on-site maintenance costs and helping to improve the stability and accuracy of the data acquisition system at the distribution station level.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A multifunctional terminal reset device includes a signal transceiver, an AC-DC power module, a microcontroller chip, a rotary DIP switch, and a relay control module.

[0007] The output terminal of the mains power supply is connected to both the input terminal of the AC-DC power module and one end of the normally closed contact of the relay control module.

[0008] The other end of the normally closed contact of the relay is connected to the power input terminal of the terminal device;

[0009] The signal terminal of the terminal device is connected to the input port of the microcontroller chip via a signal transceiver;

[0010] The output port of the microcontroller chip is connected to one end of the coil in the relay control module, and the other end of the coil is connected to the positive output terminal of the AC-DC power supply module.

[0011] The level signal port of the rotary DIP switch is connected to the signal input port of the microcontroller chip.

[0012] Preferably, the power supply is a three-phase AC power grid.

[0013] Preferably, in the above-mentioned multi-functional terminal reset device, the AC-DC power supply module includes a three-phase AC-DC power supply module, and the relay control module includes four independent relay control units.

[0014] Wherein, the A phase of the three-phase AC power grid is connected to the A phase input terminal of the three-phase AC-DC power module and one end of the normally closed contact of the first relay control unit;

[0015] The B phase of the three-phase AC power grid is connected to the B phase input terminal of the three-phase AC-DC power module and one end of the normally closed contact of the second relay control unit.

[0016] The C phase of the three-phase AC power grid is connected to the C phase input terminal of the three-phase AC-DC power module and one end of the normally closed contact of the third relay control unit, respectively.

[0017] The N phases of the three-phase AC power grid are respectively connected to the N phase input terminal of the three-phase AC-DC power module and one end of the normally closed contact of the fourth relay control unit.

[0018] The voltage output terminals of the three-phase AC-DC power supply module are respectively connected to one end of the coil of the first relay control unit, one end of the coil of the second relay control unit, one end of the coil of the third relay control unit, and one end of the coil of the fourth relay control unit.

[0019] Preferably, the above-mentioned multi-functional terminal reset device further includes several indicator lights, one end of each indicator light is connected to an output terminal of a microcontroller chip, and the other end of each indicator light is connected to the output terminal of an AC-DC power supply module.

[0020] Preferably, in the above-mentioned multi-functional terminal reset device, the signal transceiver is an RS-485 transceiver.

[0021] Preferably, in the above-mentioned multi-functional terminal reset device, the microcontroller chip is an N32G430K8Q7 microcontroller.

[0022] Preferably, in the above-mentioned multi-functional terminal reset device, the first relay control unit, the second relay control unit, the third relay control unit, and the fourth relay control unit all include a G2RL-14-CN relay.

[0023] As can be seen from the above technical solution, compared with the prior art, the present invention discloses a multifunctional terminal reset device, which has the following beneficial effects:

[0024] This invention can acquire terminal working status signals through a signal transceiver and restart the terminal using a microcontroller, rotary DIP switch, and relay control module. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0026] Figure 1 Connection diagram for the multifunctional terminal reset device provided by this utility model.

[0027] Figure 2 A schematic diagram of the overall structure of the multifunctional terminal reset device provided by this utility model.

[0028] Figure 3 A more detailed circuit connection diagram, excluding the relay control module, is provided for the multifunctional terminal reset device of this utility model.

[0029] Figure 4 A schematic diagram of the specific circuit connection of the relay control module provided by this utility model.

[0030] Figure 5 A schematic diagram of the specific circuit connection of the microcontroller chip provided for this utility model.

[0031] Figure 6 A schematic diagram of the specific circuit connection of the 485 signal transceiver chip provided by this utility model.

[0032] Figure 7 A schematic diagram of the specific circuit connection of the rotary dial switch provided by this utility model.

[0033] Figure 8 A schematic diagram of the specific circuit connection of the indicator module provided by this utility model. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] This utility model embodiment discloses a multifunctional terminal reset device, with a connection diagram for a usage scenario, as shown below. Figure 1 As shown, the input terminal of the multi-functional terminal reset device is connected to the mains power supply. The wiring method can be a three-phase four-wire connection or a two-phase connection. The output terminal of the multi-functional terminal reset device is connected to the terminal equipment. The multi-functional terminal reset device is connected to the terminal's 485 interface via a 485 interface. The mains power supply provides power to the terminal through the relay control module of the multi-functional terminal reset device.

[0036] like Figure 2 As shown, the multi-functional terminal reset device circuit includes an AC-DC power module 201, a signal transceiver 202, a rotary DIP switch 204, a microcontroller chip 205, and a relay control module 206. In this embodiment, the mains power supply adopts a three-phase AC power supply. Phase A of the mains power supply is connected to the first terminal of the AC-DC power module 201 and the first terminal of the relay control module 206, respectively; Phase B of the mains power supply is connected to the second terminal of the AC-DC power module 201 and the second terminal of the relay control module 206, respectively; Phase C of the mains power supply is connected to the third terminal of the AC-DC power module 201 and the third terminal of the relay control module 206, respectively; and Phase N of the mains power supply is connected to the fourth terminal of the AC-DC power module 201 and the fourth terminal of the relay control module 206, respectively. The fifth terminal of the AC-DC power module 201 is connected to the first terminal of the signal transceiver 202, the first terminal of the rotary DIP switch 204, the first terminal of the microcontroller chip 205, and the tenth terminal of the relay control module 206, respectively; the sixth terminal of the AC-DC power module 201 is connected to the second terminal of the signal transceiver 202, the second terminal of the rotary DIP switch 204, the second terminal of the microcontroller chip 205, and the eleventh terminal of the relay control module 206, respectively.

[0037] In this new invention, the signal transceiver can employ various 485 transceiver chips such as SP3485EN-L / TR, SP3485EEN, and SP3485EEN-TD. The microcontroller chip can be N32G430K8Q7, and the relay can be G2RL-14-CN.

[0038] To illustrate the connection relationships of this novel invention in more detail, such as Figures 3-8As shown, the relay control module 206 includes four independent relay control units; wherein, phase A of the three-phase AC power grid is connected to the phase A input terminal of the three-phase AC-DC power module and one end of the normally closed contact k1 of the first relay control unit; phase B of the three-phase AC power grid is connected to the phase B input terminal of the three-phase AC-DC power module and one end of the normally closed contact k2 of the second relay control unit; phase C of the three-phase AC power grid is connected to the phase C input terminal of the three-phase AC-DC power module and one end of the normally closed contact k3 of the third relay control unit; phase N of the three-phase AC power grid is connected to the phase N input terminal of the three-phase AC-DC power module and one end of the normally closed contact k4 of the fourth relay control unit; the voltage output terminal of the three-phase AC-DC power module is connected to one end of the coil KT1 of the first relay control unit, one end of the coil KT2 of the second relay control unit, one end of the coil KT3 of the third relay control unit, and one end of the coil KT4 of the fourth relay control unit.

[0039] like Figure 4 As shown, each relay control unit also includes an auxiliary protection circuit consisting of resistors, diodes, and NPN transistors.

[0040] The fourth terminal of the microcontroller chip 205 is connected to the fifth terminal of the signal transceiver 202, the fifth terminal of the microcontroller chip 205 is connected to the ninth terminal of the relay control module 206, and the sixth terminal of the microcontroller chip 205 is connected to the third terminal of the rotary DIP switch 204.

[0041] In this embodiment, the signal transceiver chip 202 is used to connect the device terminal and the microcontroller chip 205. A specific connection relationship is described in reference [reference needed]. Figure 5 , Figure 6 As shown. The third terminal of the signal transceiver chip 202 is connected to the RS-485 interface A of the terminal device, and the fourth terminal of the signal transceiver chip 202 is connected to the RS-485 interface B of the terminal device.

[0042] Rotary DIP switch 204 is used to set the restart time. (See reference...) Figure 5 , Figure 7 In one specific embodiment, the level signal ports (301-304) of the rotary DIP switch 204 are connected to the signal input ports (601-604) of the microcontroller chip, respectively.

[0043] In addition, in this embodiment of the invention, an indicator light module 203 is provided, which consists of several indicator lights and is used to display different states. The specific circuit connection diagram is shown below. Figure 5 , Figure 8 As shown in Table 1, the indicator light status configuration is as follows:

[0044] Table 1 Indicator Light Status Configuration Table

[0045]

[0046] The working principle of the multifunctional terminal reset device disclosed in this invention is as follows:

[0047] The three-phase power supply from the grid is used to power the multi-functional terminal reset device, and at the same time, it powers the terminal through the relay control module 206.

[0048] AC-DC power supply unit 201 is used to convert three-phase power from the grid into DC power to power signal transceiver 202, indicator light 203, rotary DIP switch 204, microcontroller chip 205, and relay control module 206.

[0049] The transceiver 202 converts the remote signaling TTL level signal of the microcontroller chip 205 into an RS-485 differential signal.

[0050] The microcontroller chip 205 reads the setting information of the rotary DIP switch 204 and obtains the power-off time of the restart terminal.

[0051] When the multi-functional terminal reset device is working normally, the microcontroller chip 205 is configured to periodically transmit remote signaling TTL level signals to the signal transceiver 202. The signal transceiver 202 converts the remote signaling TTL level signals into RS485 differential signals and transmits them to the terminal via the RS485 bus. If the terminal is working normally, it will transmit a response signal to the signal transceiver 202 via the RS485 bus. The signal transceiver 202 converts the response signal into a TTL level signal and transmits it to the microcontroller chip 205. If the terminal malfunctions or crashes, it will not send a response signal. If the microcontroller chip 205 does not receive a response signal within a certain period after sending the remote signaling signal, it indicates that the terminal is malfunctioning or crashing. In this case, the microcontroller chip 205 outputs a disconnect relay signal to the relay control module 206 and starts timing. When the timing reaches the power-off time for restarting the terminal, the microcontroller chip 205 sends a close relay signal to the relay control module 206 to achieve power-off restart of the terminal.

[0052] When the relay control module 206 receives the relay disconnect signal sent by the microcontroller chip 205, it disconnects 4 relays to achieve terminal power-off; when the relay control module 206 receives the relay close signal sent by the microcontroller chip 205, it closes 4 relays to achieve terminal restart.

[0053] In this embodiment of the invention, no design improvement of the microcontroller program is involved. In the above embodiment, the restart of the terminal device is achieved by using a rotary DIP switch 204 and a common relay, which has the advantage of low cost. In other embodiments, a time relay can also be used to set the restart time of the terminal device, so as to replace the rotary DIP switch and the common relay.

[0054] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0055] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A multifunctional terminal reset device, characterized in that, The signal transceiver, the AC-DC power module, the single-chip microcomputer chip, the rotary code switch and the relay control module are included. The output end of the power grid power supply is connected with the input end of the AC-DC power module and one end of the normally closed contact of the relay control module. The other end of the normally closed contact of the relay is connected with the power input end of the terminal device. The signal end of the terminal device is connected with the input port of the single-chip microcomputer chip through the signal transceiver. One end of the coil in the relay control module is connected with the output port of the single-chip microcomputer chip, and the other end of the coil is connected with the positive output end of the AC-DC power module. The level signal port of the rotary code switch is connected with the signal input port of the single-chip microcomputer chip.

2. The multi-functional terminal reset device according to claim 1, wherein The power grid power supply includes a three-phase alternating current power grid.

3. The multi-functional terminal reset device according to claim 2, wherein The AC-DC power module includes a three-phase AC-DC power module, and the relay control module includes four independent relay control units. The A phase of the three-phase alternating current power grid is connected with the A phase input end of the three-phase AC-DC power module, one end of the normally closed contact of the first relay control unit, respectively. The B phase of the three-phase alternating current power grid is connected with the B phase input end of the three-phase AC-DC power module, one end of the normally closed contact of the second relay control unit, respectively. The C phase of the three-phase alternating current power grid is connected with the C phase input end of the three-phase AC-DC power module, one end of the normally closed contact of the third relay control unit, respectively. The N phase of the three-phase alternating current power grid is connected with the N phase input end of the three-phase AC-DC power module, one end of the normally closed contact of the fourth relay control unit, respectively. The voltage output end of the three-phase AC-DC power module is connected with one end of the coil of the first relay control unit, one end of the coil of the second relay control unit, one end of the coil of the third relay control unit and one end of the coil of the fourth relay control unit, respectively.

4. The multi-functional terminal reset apparatus according to claim 1, wherein A plurality of indicator lights are further included, one end of each indicator light is connected with one output end of the single-chip microcomputer chip, and the other end of each indicator light is connected with the positive output end of the AC-DC power module.

5. The multi-functional terminal reset apparatus according to claim 1, wherein The signal transceiver includes an RS-485 transceiver.

6. The multi-functional terminal reset apparatus according to claim 1, wherein The single-chip microcomputer chip includes an N32G430K8Q7 single-chip microcomputer.

7. The multi-functional terminal reset apparatus according to claim 3, wherein The first relay control unit, the second relay control unit, the third relay control unit and the fourth relay control unit all include a G2RL-14-CN relay.

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