Power source switching equipment

Abstract

The utility model relates to a power source switching device, comprising a plurality of relay groups, each relay group comprising a plurality of relays connected in parallel; the first power supply is used for supplying power to a coil of the relay group; the relay group controller comprises a plurality of paths of control switches which are connected in parallel, a plurality of power supply loops which are in one-to-one correspondence with the relay groups are formed by the relay group controller and the first power supply, and the relay group controller is used for switching the on-off states of the control switches according to the obtained switching instruction so as to control the on-off of all relays in the corresponding relay groups; a plurality of first wiring terminal strips, each first wiring terminal strip comprising a plurality of first wiring terminals used for connecting the relay and the electric equipment; and the second wiring terminal strip comprises a plurality of second wiring terminals which are used for connecting the relay and the power source. According to the utility model, the automation of power source switching can be realized, the switching efficiency is improved, and the safety risk is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of power distribution, in particular to a power source switching device. Background Art

[0002] A power source is a device that generates voltage and current signals and independently adjusts the amplitude and phase difference between the voltage and current. This device also includes a standard meter that accurately measures voltage, current, frequency, and the resulting imaginary power. Its readings serve as a comparative reference for calibrating and verifying various measurement devices and systems that primarily measure variable-frequency electrical quantities. Power sources have a wide range of applications, including but not limited to circuit testing, circuit debugging, circuit calibration, communication systems, audio equipment sensors and measurement equipment, and experimental teaching and research.

[0003] Common power sources on the market typically offer 3-phase / 4-phase voltage and current stabilization, voltage and current harmonic stabilization, and RS485 programmable control. As a standard source, power sources are often used to test, debug, and calibrate individual electrical devices.

[0004] In normal practical use, the power source needs to frequently change the output object (electrical equipment), which has the following defects:

[0005] 1) When replacing electrical equipment, the process is cumbersome and requires operators to switch the power supply, which is inefficient.

[0006] 2) When replacing electrical equipment, wiring errors may occur, causing damage to the electrical equipment or power source.

[0007] 3) When replacing electrical equipment, leakage may occur during wiring, causing electric shock to personnel, posing a safety risk.

[0008] 4) When replacing electrical equipment, operators are required to switch the power supply, making it impossible to automate the test process;

[0009] 5) After the switching system restarts, it cannot automatically execute the operations before the device restarts, and the degree of intelligence is low. Summary of the Invention

[0010] The technical problem to be solved by the present invention is to provide a power source switching device, which can realize the automation of power source switching, improve switching efficiency and reduce safety risks.

[0011] The technical solution adopted by the present invention to solve the technical problem is to provide a power source switching device, including:

[0012] A plurality of relay groups, each of which includes multiple relays connected in parallel;

[0013] a first power supply, used to power the coil of the relay group;

[0014] a relay group controller, comprising a plurality of control switches connected in parallel, wherein the control switches and the first power supply form a plurality of power supply circuits corresponding one to one with the relay groups, and the relay group controller is used to switch the switch state of the control switches according to the obtained switching instructions, thereby controlling the on and off of all relays in the corresponding relay group;

[0015] a plurality of first terminal blocks, each of which includes a plurality of first terminal blocks, and the first terminal blocks are used to connect the relay and the electrical equipment;

[0016] The second terminal block includes a plurality of second terminals, and the second terminals are used to connect the relay and the power source.

[0017] Furthermore, the relay group controller is also used to save the current switch states of all the control switches, and automatically set all the control switches to the switch states saved before power failure after it is powered on again.

[0018] Furthermore, for any relay group, each relay corresponds to an output end of the power source.

[0019] Furthermore, each of the relay groups corresponds to one of the electrical devices.

[0020] Furthermore, the first terminal blocks correspond one-to-one to the relay groups.

[0021] Furthermore, for any first terminal block, each of the first terminal blocks corresponds to one of the relay circuits.

[0022] Furthermore, each of the second wiring terminals corresponds to an output end of the power source.

[0023] Furthermore, the first end of the second terminal is connected to the output end of the corresponding power source, the second end of the second terminal is connected to the input end of the corresponding relay circuit in all the relay groups, the output end of the relay circuit is connected to the first end of the corresponding first terminal, and the second end of the first terminal is connected to the electrical equipment.

[0024] Furthermore, the first end of the control switch is connected to the control input end of the corresponding relay group, the second end of the control switch is connected to the power output end of the first power supply, and the ground end of the first power supply is connected to the control output end of the relay group.

[0025] Furthermore, it also includes a second power supply for supplying power to the controller.

[0026] Beneficial effects

[0027] Due to the adoption of the above-mentioned technical scheme, the present invention has the following advantages and positive effects compared with the prior art: the present invention adopts a terminal group to connect the power source, relay group and electrical equipment, which can flexibly adapt to different power sources and power demands, and reduce the safety risk of electric shock caused by leakage when replacing wiring; by setting the terminal blocks in the terminal group to correspond one-to-one with the output of the power source, and making each electrical equipment correspond to a relay group and an equipment terminal block (i.e., the first terminal block), the line connection is standardized, and power accidents caused by wrong connection or missed connection are effectively prevented; by adopting a relay group controller and a power supply to form a power supply circuit for different relay groups, the power supply circuit is controlled to be on and off according to the instructions of the upper computer, and then the relay is controlled to be on and off, thereby realizing automatic switching of the power source without manual operation, improving switching efficiency and reducing safety risks; by recording the user's most recent usage operation, the device automatically restores the switch state before power failure after restart, thereby increasing the intelligence and work efficiency of the switching device. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural diagram of an embodiment of the utility model;

[0029] Figure 2 It is a circuit diagram of an implementation method of the utility model. DETAILED DESCRIPTION

[0030] The present invention will be further described below with reference to specific embodiments. It should be understood that these embodiments are intended only to illustrate the present invention and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the contents of this invention, those skilled in the art may make various changes or modifications to the present invention, and that such equivalents also fall within the scope of the claims appended hereto.

[0031] The embodiment of the utility model relates to a device for switching a single power source output to multiple outputs, such as Figure 1As shown, the device is composed of a relay group 5, a relay group 6, a relay group 7, a relay group 8, a relay group power supply 12 (i.e., a first power supply), a relay group controller 10, a relay group controller power supply 11 (i.e., a second power supply), a device terminal block 1 (i.e., a first terminal block), a device terminal block 2, a device terminal block 3, a device terminal block 4, and a power source terminal block 9 (i.e., a second terminal block), thereby realizing the function of switching a single power source output to multiple devices. It should be noted that the number of relay groups and terminal blocks of the present invention can be freely combined. This embodiment is described by taking four relay groups and four terminal blocks as an example, but is not limited to this.

[0032] The components of the device are described as follows:

[0033] 1) Relay Group: The number of relays in the relay module is determined by the number of power source output harnesses. For example, if there are 12 harnesses, 12 single-open / single-close relays or 6 two-open / two-close relays are used. These relays are combined into a relay group. The number of relay groups is determined by the number of electrical devices. For example, if there are four electrical devices, four relay groups are required to control them. The relays are controlled by energizing and de-energizing the relay coil with a 5V voltage.

[0034] 2) Relay group power supply: Provides a stable DC 5V voltage to the relay and powers the relay coil.

[0035] 3) Relay Group Controller: This module enables multi-line output, disconnection, and switching via an RS485 communication interface. It controls the relay group's power cords by on / off. The relay group controller also remembers the user's most recent operation, automatically executing the user's most recent operation each time the device is powered on and off.

[0036] 4) Relay group controller power supply: Provides a stable DC 5V voltage for the relay group controller.

[0037] 5) Terminal blocks for electrical equipment: Provides a plug-in wiring method using terminal blocks for electrical equipment, which can eliminate safety hazards caused by leakage during wiring and incorrect wiring sequence.

[0038] 6) Power source output terminal block: Provides a plug-in terminal block wiring method for the power source, which can eliminate the safety hazards caused by leakage during the wiring process and incorrect wiring sequence.

[0039] During implementation, securely install the power source switching device in a suitable location, then plug the power source's output wires into the power source's output terminal block. Finally, plug the power-consuming device into the device's terminal block to complete the wiring between the device, the power source, and the device being powered. When the device is connected to a 220V mains supply, the mains will power the relay controller module and the relay group. Use an RS485 serial communication cable to connect the relay group controller to a control device (a host computer capable of serial communication). The control device will communicate with the device via RS485 and issue control commands.

[0040] When power is needed, the relay group controller turns on a relay group to complete the power output to a device. If the device has been used before, the most recent operation will be automatically executed after the device is powered on.

[0041] When the power source output needs to be switched, the relay group controller opens a certain relay group to complete the power source output to a certain device. When the power-consuming device needs to be switched, the relay group controller switches the path of the power source output to the power-consuming device to complete the switching of the power source output to multiple power-consuming devices.

[0042] When it is necessary to stop the power source output, the power source output is stopped, and then the relay group controller is instructed to disconnect all paths.

Claims

1. A power source switching device, characterized in that: include: A plurality of relay groups, each of which includes multiple relays connected in parallel; a first power supply, used to power the coil of the relay group; a relay group controller, comprising a plurality of control switches connected in parallel, wherein the control switches and the first power supply form a plurality of power supply circuits corresponding one to one with the relay groups, and the relay group controller is used to switch the switch state of the control switches according to the obtained switching instructions, thereby controlling the on and off of all relays in the corresponding relay group; a plurality of first terminal blocks, each of which includes a plurality of first terminal blocks, and the first terminal blocks are used to connect the relay and the electrical equipment; The second terminal block includes a plurality of second terminals, and the second terminals are used to connect the relay and the power source.

2. The device according to claim 1, characterized in that The relay group controller is also used to save the current switch states of all the control switches, and automatically set all the control switches to the switch states saved before power failure after it is powered on again.

3. The device according to claim 1, characterized in that For any relay group, each relay corresponds to an output end of the power source.

4. The device according to claim 3, characterized in that Each relay group corresponds to one electrical device.

5. The device according to claim 3, characterized in that Each of the first terminal blocks corresponds to one of the relay groups.

6. The device according to claim 5, characterized in that For any first terminal block, each of the first terminal blocks corresponds to one relay circuit.

7. The device according to claim 6, characterized in that Each of the second connecting terminals corresponds to an output end of the power source.

8. The device according to claim 7, characterized in that The first end of the second terminal is connected to the output end of the corresponding power source, the second end of the second terminal is connected to the input end of the corresponding relay circuit in all the relay groups, the output end of the relay circuit is connected to the first end of the corresponding first terminal, and the second end of the first terminal is connected to the electrical equipment.

9. The device according to claim 1, characterized in that The first end of the control switch is connected to the control input end of the corresponding relay group, the second end of the control switch is connected to the power output end of the first power supply, and the ground end of the first power supply is connected to the control output end of the relay group.

10. The device according to claim 1, characterized in that Also included is a second power supply for supplying power to the relay group controller.

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