CN215934529U

CN215934529U - Multi-channel power supply display and control equipment

Info

Publication number: CN215934529U
Application number: CN202121697391.9U
Authority: CN
Inventors: 陈得全; 袁文; 祝贺
Original assignee: CETC 54 Research Institute
Current assignee: CETC 54 Research Institute
Priority date: 2021-07-26
Filing date: 2021-07-26
Publication date: 2022-03-01
Anticipated expiration: 2031-07-26

Abstract

The utility model discloses a multi-path power supply display control device, and belongs to the technical field of alternating current power supply and distribution. The device comprises an input circuit, a display screen and a multi-path output circuit; the output circuit comprises a solid-state relay and a power output end which are connected, and a sampling module for detecting current and voltage is also connected between the solid-state relay and the power output end; the input circuit comprises a power supply input end and a monitoring module; each output circuit is connected with the power supply output end; the sampling module is connected with the monitoring module; the monitoring module is connected with the display screen. The utility model has the advantages of multi-channel electric parameter display, wide working temperature range, power supply state maintenance, state gray control and the like, and has small volume and light weight.

Description

Multi-channel power supply display and control equipment

Technical Field

The utility model relates to the technical field of alternating current power supply and distribution, in particular to a multi-channel power supply display control device.

Background

The existing products for remote control and parameter display belong to commercial goods shelves products mostly, and have the defects of small temperature range, poor circuit stability, insufficient shock resistance and vibration resistance, no self-checking read-back, incapability of keeping power supply state when a remote control link is abnormal, and the like.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a multi-channel power display control device. The equipment has the advantages of multi-channel electric parameter display, wide working temperature range, power supply state maintaining, state gray control and the like, and is small in size and light in weight.

In order to achieve the purpose, the technical scheme adopted by the utility model is as follows:

a multi-channel power supply display control device comprises a power supply input end and a display screen; the monitoring circuit also comprises a monitoring module and a plurality of output circuits, wherein each output circuit is connected with the input end of the power supply; the output circuit comprises a solid-state relay, a sampling module and a power supply output end which are connected in sequence; the sampling module is connected with the monitoring module and used for transmitting signals of current values and voltage values, and the monitoring module is connected with the display screen and used for displaying current values and voltage values of each output circuit; and the solid-state relay is connected with the monitoring module.

Further, the device also comprises a direct current power supply module; the input port of the direct current power supply module is connected with the power input end, and the output port of the direct current power supply module is respectively connected with the monitoring module and the solid-state relay and used for supplying power.

Furthermore, a network port for realizing data interaction with an upper computer is arranged on the monitoring module.

Furthermore, the monitoring module comprises a first MCU, a second MCU and a third MCU; the output circuit is provided with 8 paths, wherein 1 to 4 paths are connected with the second MCU through respective sampling modules, 5 to 8 paths are connected with the third MCU through respective sampling modules, and the first MCU is respectively connected with the display screen, the second MCU, the third MCU and the 8 paths of solid-state relays.

Further, the sampling module comprises a mutual inductance loop for sampling the voltage and the current.

Furthermore, the monitoring module comprises an overvoltage unit, an undervoltage unit, an overcurrent protection unit and a power supply state maintaining module.

Furthermore, the system also comprises a local control/remote control selection switch, and the local control/remote control selection switch is connected between the monitoring module and the solid-state relay.

Further, the system also comprises an IP setting unit.

The utility model adopts the technical scheme to produce the beneficial effects that:

1. the module of the utility model can support single interface input and output multi-path output;

2. the utility model can be remotely turned on and off through a computer, and display parameters such as multi-path voltage, current, power and the like.

3. The utility model has perfect functions of overvoltage, undervoltage and overcurrent protection.

Drawings

FIG. 1 is an electrical schematic block diagram of the present invention;

FIG. 2 is a schematic view of a front panel of an embodiment of the present invention;

fig. 3 is an electrical schematic block diagram of a specific embodiment of the present invention.

Detailed Description

The present invention will be further illustrated by the following embodiments. The following detailed description, of course, is merely illustrative of various aspects of the utility model and is not to be construed as limiting the scope of the utility model.

A multi-channel power supply display control device comprises a control switch, a monitoring module, a direct current supply module, a local control/remote control selection switch and a relay, wherein solid relays and a display screen are preferably adopted, alternating current AC220V/AC380V supplies power to the monitoring module and the direct current supply module through the control switch, the monitoring module completes multi-channel current and voltage sampling and outputs the multi-channel current and voltage sampling to corresponding relays, control signals of a plurality of relays are provided and output to corresponding local control/remote control selection switches, the relays are directly switched on when the local control/remote control selection switch selects local control, when the local control/remote control selection switch selects a remote control state, the monitoring module realizes data interaction between an upper computer and the modules through an internal network transparent transmission module, the relays are switched on and off, and sampled multi-channel voltage and current data are sent to the display screen to display multi-channel voltage, The value of the current.

Wherein: the direct current power supply module and the monitoring module are composed of an 8-path power supply display control module.

And 8 power display control modules can comprise a first MCU, a second MCU and a third MCU of three microprocessors, wherein 1-4 channels of output of the display control module transmit the acquired data to the second MCU through the sampling module, 5-8 channels of output transmit the acquired data to the third MCU through the sampling module, and the first MCU is a main chip and is responsible for data interaction between chips and controls 1-8 channels of output of the relay and display screen parameter display functions.

The first MCU can send data to the network transparent transmission module through TTL level to realize data interaction between the upper computer and the module, and each relay is controlled by 2 MCU pins and reads back parameters by 1 pin.

The first MCU can transmit data to the display screen through a 232 chip, the second MCU and the third MCU are respectively connected with 4 sampling modules through serial port pins to transmit and receive signals, and the sampling modules sample current and voltage of each path through a mutual inductance ring.

Referring to fig. 1, an electrical schematic block diagram of the present embodiment is shown, and the present embodiment mainly includes a control switch, a dc power supply module, a monitoring module, a local control/remote control selection switch, a relay, and a display screen. Wherein: the AC220V/AC380V supplies power to the subsequent circuit through the control switch, completes multi-path current and voltage sampling and outputs to the corresponding relay by matching with the monitoring module, simultaneously the monitoring module provides control signals of a plurality of relays and outputs to the corresponding local control/remote control selection switch, the relay is directly switched on when the local control/remote control selection switch selects the local control, when the local control/remote control selection switch selects the remote control state, the monitoring module can realize the data interaction between the upper computer and the multi-path power supply display control equipment module through the network transparent transmission module inside the monitoring module, carries out the on-off control of the relay, and can display the multi-path voltage and current values by the display, thereby completing the on-off control of the multi-path relay, and simultaneously the monitoring module sends the voltage and current data collected by the sampling module to the display screen, the voltage and current values output by each path are displayed by the display screen.

The multi-channel power display and control device in this embodiment is exemplified by 8 channels, and the 8 channels of power display and control modules provide the functions of the dc power supply module and the monitoring module, and mainly includes a control switch, 8 channels of power display and control modules, a local control/remote control selection switch, a solid-state relay and a display screen. The IP setting unit has an IP setting function, and also has a status read-back function and a power supply status holding function.

Referring to fig. 2 and 3, fig. 2 is a schematic view of a front panel according to the present embodiment.

FIG. 3 is an electrical schematic block diagram of an embodiment of the present invention in which connections may be made according to the schematic diagram of FIG. 3. In this particular embodiment, the rated operating voltage is 220VAC/380VAC, and the operating voltage range is 220VAC + -15%/380 VAC + -15%.

The control switch of the multi-channel power supply display control equipment is used for power supply control switch and overcurrent protection. The control switch used in this particular embodiment is of the type C65NC4P/63A, manufactured by Schneider.

The direct current power supply module and the monitoring module are realized by an 8-channel power supply display control module, which comprises a first MCU, a second MCU and a third MCU of three microprocessors, and is used for inputting an alternating current AC220V/AC380V power supply into the 8-channel power supply display control module through an input interface, wherein 1-4 channels of output of the power supply display control module transmit collected data to the second MCU through a sampling module, 5-8 channels of output transmit the collected data to the third MCU through the sampling module, the alternating current output power of each channel is not less than 6kW, and the first MCU is used as a main chip and is responsible for the functions of data interaction between chips, controlling 1-8 channels of output of relays, displaying screen parameters and the like.

The first MCU sends data to the network transparent transmission module through TTL level to realize data interaction between the upper computer and the module, and each relay is controlled through 2 MCU pins and reads back parameters through 1 pin. And the first MCU transmits data to the display screen through the 232 chip. The second MCU and the third MCU are respectively connected with 4 sampling modules through serial port pins to send and receive signals, the sampling modules sample current and voltage of each path through a mutual inductance ring, and power parameters and the like are automatically calculated and fed back to the display screen through programs. The model of the 8-channel power display and control module adopted in the embodiment is JS-XK-8-I, and the manufacturer is Shijiazhuang Jinshuo electronic technology Co.

The local control/remote control selection switch is used for selecting the equipment to work in a local control or remote control working state. The model of the local/remote control selection switch adopted by the embodiment is KN6A-102DM, and the manufacturer is 851 factory.

The relay of the embodiment of the utility model adopts a solid-state relay, and the function of the solid-state relay is to control the on-off of 8 live wires. The model of the solid-state relay adopted in the embodiment is E4042-32H, and the manufacturer is Gaoketongli corporation.

The display screen is used for displaying the voltage and current values of the 8 paths of output. The model of the display screen adopted by the embodiment is DMT48270T043_18WTZ5, and the manufacturer is Beijing Diwen technical Co.

Referring to fig. 1 and 2, the operation control structure of the embodiment of the present invention will now be briefly described as follows:

when the 220V/380V alternating current power supply is connected to 8 paths of power supply display control equipment, the equipment can be connected to a computer network through a network cable, and a 8-path power supply display control module (JS-XK-8-I) in the equipment can receive a control instruction of the computer and control the on-off of each relay. In addition, each path of output is correspondingly provided with a local control/remote control selection switch and an output state indication, when the switch is in a remote control position, the output corresponding to the switch is controlled by a computer, the on and off of the corresponding indicator light change along with an instruction, when the switch is in a local control position, the output corresponding to the switch is not controlled by the computer, the indicator light is normally on, and when the local control/remote control working state is realized, the voltage and the current value of each path of output can be displayed on the display screen of the front panel.

The key points of the utility model are as follows:

the power supply case has reasonable structural layout, good manufacturability and good human-computer interface, adopts the 19-inch shelf-mounted standard, can be installed by using three guide rails and simple guide rails, has convenient installation, strong universality and light structural weight, is particularly suitable for project application of vehicle-mounted stations and fixed stations, and the schematic diagram of the front panel is shown in figure 2.

In conclusion, the multi-channel power supply display control device can support AC220V/AC380V input, then output multi-channel AC220V, each channel of output power is not less than 6kW, meanwhile, the total output power is not less than 30kW, and can be remotely turned on and off through a computer to display parameters such as multi-channel voltage, current, power and the like,

simultaneously, the system also has the following functional modules:

1. perfect overvoltage, undervoltage and overcurrent protection functions;

2. the IP setting function is provided;

3. has the status read-back function;

4. has the function of keeping the power supply state.

Therefore, the system has the characteristic of high reliability, and is particularly suitable for occasions requiring remote control and parameter display in alternating current power supply and distribution.

Claims

1. A multi-channel power supply display control device comprises a power supply input end and a display screen; the power supply is characterized by also comprising a monitoring module and a plurality of output circuits, wherein each output circuit is connected with the input end of the power supply; the output circuit comprises a solid-state relay, a sampling module and a power supply output end which are connected in sequence; the sampling module is connected with the monitoring module and used for transmitting signals of current values and voltage values, and the monitoring module is connected with the display screen and used for displaying current values and voltage values of each output circuit; the solid-state relay is also connected with the monitoring module.

2. The multi-power-supply display control device according to claim 1, further comprising a dc power supply module; the input port of the direct current power supply module is connected with the power input end, and the output port of the direct current power supply module is respectively connected with the monitoring module and the solid-state relay and used for supplying power.

3. The multi-power-supply display and control device according to claim 1, wherein the monitoring module is provided with a network port for realizing data interaction with an upper computer.

4. The multi-power-supply display control device according to claim 1, wherein the monitoring module comprises a first MCU, a second MCU and a third MCU; the output circuit is provided with 8 paths, wherein 1 to 4 paths are connected with the second MCU through respective sampling modules, 5 to 8 paths are connected with the third MCU through respective sampling modules, and the first MCU is respectively connected with the display screen, the second MCU, the third MCU and the 8 paths of solid-state relays.

5. The multi-power-supply display and control device according to claim 4, wherein the sampling module comprises a mutual inductance loop for sampling voltage and current.

6. The multi-power-supply display control device according to claim 1, wherein the monitoring module comprises an overvoltage unit, an undervoltage unit, an overcurrent protection unit and a power supply state maintaining module.

7. The multi-power-supply display and control device according to claim 1, further comprising a local/remote control selection switch, wherein the local/remote control selection switch is connected between the monitoring module and the solid-state relay.

8. The multi-power-supply display and control device according to claim 1, further comprising an IP setting unit.