Relay constant value verification device

Abstract

The utility model discloses a relay constant value verification device, which comprises a shell. A current generator, an optocoupler, a voltage comparator and an analog-to-digital converter are arranged in the shell, and a touch screen display is arranged on the surface of the shell; the signal output end of the touch screen display is connected to the current generator; the current output end of the current generator is connected to the current input end of the relay; the current output end of the relay is connected to the analog-to-digital converter; the input end of the optocoupler is connected to the control end of the relay, and the output end of the optocoupler is connected to the voltage comparator; the output end of the voltage comparator is connected to an analog-to-digital converter, and the output end of the analog-to-digital converter is connected to a touch screen display. According to the utility model, efficient and accurate verification of the fixed value of the relay can be realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to relay check field, concretely relates to a relay fixed value check device. BACKGROUND

[0002] In recent years, fixed inspection, new construction and technical transformation projects are continuously promoted. Among them, the overload closed load regulation function adopts the local configuration of overload current relay, and the relay personnel needs to repeatedly test the relay multiple times in the fixed value setting and checking process in order to gradually approach the fixed value issued by the dispatching department.

[0003] The main transformer overload control relay fixed value regulation mainly uses the current of relay debugging instrument to increase the amount, and the staff manually adjusts the relay knob pointer to change the fixed value. After the staff changes the fixed value, the fixed value needs to be checked for reliable action: 1.05 times reliable action and 0.95 times reliable inaction test are carried out respectively. For fixed value checking, it mainly depends on manual checking, and it is easy to have unreliable action during fixed value checking, which needs to be repeatedly adjusted and repeatedly checked, and it takes a long time, and there are problems of low fixed value checking efficiency and easy error.

[0004] Therefore, in order to solve the above problems, a relay fixed value checking device is needed, which can realize efficient and accurate checking of the fixed value of the relay. CONTENT OF THE UTILITY MODEL

[0005] Therefore, the utility model aims at overcoming the defects in the prior art, and provides a relay fixed value checking device, which can realize efficient and accurate checking of the fixed value of the relay.

[0006] The relay fixed value checking device of the utility model, including the casing, the casing is provided with current generator, photocoupler, voltage comparator and analog-digital converter, the surface of the casing is provided with touch screen display,

[0007] The signal output end of the touch screen display is connected to the current generator; the current output end of the current generator is connected to the current input end of the relay; the current output end of the relay is connected to the analog-digital converter;

[0008] The input end of the photocoupler is connected to the control end of the relay, and the output end of the photocoupler is connected to the voltage comparator; the output end of the voltage comparator is connected to the analog-digital converter, and the output end of the analog-digital converter is connected to the touch screen display.

[0009] Further, the casing is also provided with a fuse; the current input end of the fuse is connected to the current output end of the current generator, and the current output end of the fuse is connected to the current input end of the relay.

[0010] Further, the shell is internally provided with a heat dissipation device.

[0011] Further, the heat dissipation device adopts heat dissipation fins, and the surface of the shell corresponding to the heat dissipation fins is provided with a plurality of heat dissipation holes.

[0012] Further, the optocoupler adopts a current detection type optocoupler.

[0013] Further, the voltage comparator adopts a high-speed voltage comparator.

[0014] Further, the analog-digital converter adopts a pipeline type analog-digital converter.

[0015] The relay fixed value verification device has the advantages that different fixed value verification modes are selected through the touch screen display, different currents are input to the relay through the current generator, the action of the relay is detected through the relay state detection module formed by the optocoupler and the voltage comparator, and the final detection result is fed back to the touch screen display for timely display, so that manual operation is greatly reduced, fixed value verification efficiency is improved, manual operation interference is reduced, and fixed value verification accuracy is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] The utility model is further described below in combination with the drawings and examples:

[0017] Figure 1 It is an internal structure schematic view of the utility model;

[0018] Wherein, 1 - shell, 2 - current generator, 3 - optocoupler, 4 - voltage comparator, 5 - analog-digital converter, 6 - touch screen display, 7 - fuse, 8 - heat dissipation fin. DETAILED DESCRIPTION

[0019] The utility model is further described below in combination with the drawings and examples:

[0020] The relay fixed value verification device has the advantages that different fixed value verification modes are selected through the touch screen display, different currents are input to the relay through the current generator, the action of the relay is detected through the relay state detection module formed by the optocoupler and the voltage comparator, and the final detection result is fed back to the touch screen display for timely display, so that manual operation is greatly reduced, fixed value verification efficiency is improved, manual operation interference is reduced, and fixed value verification accuracy is improved.

[0021] The signal output end of the touch screen display 6 is connected to the current generator 2; the current output end of the current generator 2 is connected to the current input end of the relay; and the current output end of the relay is connected to the analog-digital converter 5.

[0022] The input end of the optocoupler 3 is connected to the control end of the relay, and the output end of the optocoupler 3 is connected to the voltage comparator 4; the output end of the voltage comparator 4 is connected to the analog-digital converter 5, and the output end of the analog-digital converter 5 is connected to the touch screen display 6.

[0023] The touch screen display 6 can select different fixed value verification modes according to actual working conditions, such as a fixed value 1.05 times reliable action mode or a fixed value 0.95 times reliable non-action mode, and input different fixed values; the touch screen display 6 can use an existing capacitive touch screen, such as a TFT-LCD display screen; in order to send and receive instruction signals and process data, the touch screen display 6 can be integrated with a controller or a single-chip microcomputer, and the controller or the single-chip microcomputer sends instructions to the current generator 2, and the current generator 2 outputs accurate current values according to the instructions to simulate overload conditions in actual work, and whether the relay can act in time and accurately under the simulated overload conditions is observed.

[0024] The optocoupler 3 includes a light emitter and a light receiver; the light emitter can be a light-emitting diode, and the light receiver can be a photoresistor or a photodiode; the voltage comparator 4 serves as a detection module and is used to judge the output state of the optocoupler 3. When the relay is activated, the current at the control end of the relay changes, and the change is transmitted to the light emitter through the input end of the optocoupler 3 to make the light emitter emit light. After the light receiver receives the light signal, the light receiver converts the light signal into an electric signal output, and the output signal can be captured by the voltage comparator 4. The voltage comparator 4 judges the state of the relay according to the output signal of the optocoupler 3. If the optocoupler 3 outputs a high level, it indicates that the relay has been closed; if the optocoupler 3 outputs a low level, it indicates that the relay has been disconnected. The analog-digital converter 5 can convert an analog signal into a digital signal, wherein the analog signal includes the relay action state and the actual current value, and the digital signal is transmitted to the touch screen display 6 for display.

[0025] In the embodiment, the housing 1 is further provided with a fuse 7; the current input end of the fuse 7 is connected to the current output end of the current generator 2, and the current output end of the fuse 7 is connected to the current input end of the relay.

[0026] By arranging the fuse 7 between the current generator 2 and the relay, the circuit can be cut off in time when the current is too large, so as to prevent the occurrence of safety accidents such as equipment damage or fire.

[0027] In the embodiment, the housing 1 is further provided with a heat dissipation device. By arranging the heat dissipation device, the heat generated by the electronic components in the housing 1 during work can be effectively reduced, so as to prevent the performance of the components from being degraded or damaged due to high temperature, thereby ensuring the stability and reliability of the entire relay fixed value verification device.

[0028] In the embodiment, the heat dissipation device adopts the heat dissipation fins 8, and the surface of the shell 1 corresponding to the heat dissipation fins 8 is provided with a plurality of heat dissipation holes. The heat dissipation fins 8 are a device for increasing the heat dissipation area to improve the heat dissipation efficiency. In a small space, compact heat dissipation fin structure can be designed, which is directly installed near the heat source, and the heat is transferred to the fins through the heat-conducting material such as heat-conducting glue, and then the heat is dissipated to the air by the fins.

[0029] By arranging the heat dissipation fins 8 and a plurality of heat dissipation holes, the heat dissipation area can be significantly increased, and the air convection inside and outside the shell 1 can be accelerated through the heat dissipation holes, so that the heat generated in the shell 1 can be effectively discharged, and the relay setting value verification device can maintain stable temperature in high-intensity work, preventing overheating from affecting the performance and service life of the equipment.

[0030] In the embodiment, the optocoupler 3 adopts a current detection type optocoupler. By arranging the current detection type optocoupler, the current change can be accurately monitored, the electrical safety between the control end and the detection end can be ensured, and the accurate transmission of the current signal can be ensured, so that the stability, accuracy and safety of the verification device can be effectively improved.

[0031] In the embodiment, the voltage comparator 4 adopts a high-speed voltage comparator. By arranging the high-speed voltage comparator, the input signal with rapid change can be processed, the switching state of the relay can be quickly monitored in response to the rapidly changing current or voltage signal, and the high-speed voltage comparator has low bias current and noise.

[0032] In the embodiment, the analog-to-digital converter 5 adopts a pipeline type analog-to-digital converter. By adopting the pipeline type analog-to-digital converter, higher precision can be provided at a higher sampling rate, which is suitable for real-time monitoring and processing of rapidly changing signals. Compared with other types of analog-to-digital converters, the pipeline type analog-to-digital converter has higher throughput, can realize efficient data acquisition in high-speed applications, and has good precision and low delay.

[0033] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present application and are not limited. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced by equivalents without departing from the purpose and scope of the present application, and all should be covered in the scope of the claims of the present application.

Claims

1. A relay setting verification device, characterized in that: The device includes a housing; a current generator, an optocoupler, a voltage comparator, and an analog-to-digital converter are disposed inside the housing, and a touch screen display is disposed on the surface of the housing. The signal output terminal of the touch screen display is connected to a current generator; the current output terminal of the current generator is connected to the current input terminal of a relay; the current output terminal of the relay is connected to an analog-to-digital converter. The input terminal of the optocoupler is connected to the control terminal of the relay, and the output terminal of the optocoupler is connected to the voltage comparator; the output terminal of the voltage comparator is connected to the analog-to-digital converter, and the output terminal of the analog-to-digital converter is connected to the touch screen display.

2. The relay setting verification device according to claim 1, characterized in that: The housing also contains a fuse; the current input terminal of the fuse is connected to the current output terminal of the current generator, and the current output terminal of the fuse is connected to the current input terminal of the relay.

3. The relay setting verification device according to claim 1, characterized in that: The housing is also equipped with a heat dissipation device.

4. The relay setting verification device according to claim 3, characterized in that: The heat dissipation device uses heat dissipation fins, and a number of heat dissipation holes are provided on the shell surface corresponding to the heat dissipation fins.

5. The relay setting verification device according to claim 1, characterized in that: The optocoupler is a current-sensing type optocoupler.

6. The relay setting verification device according to claim 1, characterized in that: The voltage comparator is a high-speed voltage comparator.

7. The relay setting verification device according to claim 1, characterized in that: The analog-to-digital converter is a pipelined analog-to-digital converter.

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