Relay measuring device

Abstract

The utility model discloses a relay measuring device which comprises a master control module, a power supply module, a first relay interface module, a second relay interface module and a touch screen. The main control module is connected with the power supply module, the first relay interface module, the second relay interface module and the touch screen; the first relay interface module and the second relay interface module are both used for being connected with a relay to be measured; the touch screen is used for receiving the model of the relay to be measured; the main control module outputs a target voltage for measuring the to-be-measured relay according to the model to obtain a measurement result of the to-be-measured relay; and the touch screen is also used for displaying a measurement result. Through the main control module and the touch screen, automatic measurement of the relay is realized, the first relay interface module and the second relay interface module can be respectively connected with relays of different models, measurement of the relays of various models is realized, the problem of low efficiency of a traditional manual measurement mode is avoided, and the measurement efficiency is remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of relay measurement technology, and in particular to a relay measuring device. Background Technology

[0002] With the rapid development of rail transit systems such as subways and electric locomotives, relays, as an indispensable component in electrical control systems, come in a wide variety of types and models, posing numerous challenges to actual operation and maintenance. Due to the importance of relays in rail transit systems, it is necessary to measure relays to ensure their accuracy and reliability in practical applications.

[0003] However, there are many types of relays, and these types of relays differ in electrical parameters, dimensions, interfaces, etc. Therefore, there are inconsistencies in the measurement standards, requirements, and specifications for different types of relays, and different standards and requirements need to be followed when measuring them.

[0004] Currently, the measurement of relay contact resistance is generally done manually by personnel using a multimeter to measure each relay individually, which is inefficient. In addition, for enclosed relays, it is impossible to measure the resistance of their normally open contacts when offline, which has limitations. Utility Model Content

[0005] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a relay measuring device that can automatically measure various types of relays without requiring testers to manually measure the relays using a multimeter.

[0006] To solve the above problems, this utility model is implemented according to the following solution:

[0007] A relay measuring device includes: a main control module, a power supply module, a first relay interface module, a second relay interface module, and a touch screen;

[0008] The main control module is connected to the power module, the first relay interface module, the second relay interface module, and the touch screen;

[0009] Both the first relay interface module and the second relay interface module are used to connect to the relay to be measured; the touch screen is used to receive the model number of the relay to be measured; the main control module outputs a target voltage for measuring the relay to be measured based on the model number, thereby obtaining the measurement result of the relay to be measured; the touch screen is also used to display the measurement result.

[0010] Compared with the prior art, the beneficial effects of the relay measuring device of this utility model are as follows: through the main control module and the touch screen, the automatic measurement of the relay to be measured is realized, and the first relay interface module and the second relay interface module can be connected to different types of relays respectively, realizing the measurement of multiple types of relays. At the same time, it avoids the problem of low efficiency of traditional manual measurement methods and significantly improves the measurement efficiency.

[0011] Optionally, the main control module includes a voltage regulation unit, an operational amplifier unit, and a main control chip;

[0012] The voltage regulation unit is connected to the main control chip, the power supply module, the first relay interface module, and the second relay interface module; the operational amplifier unit is connected to the main control chip, the first relay interface module, and the second relay interface module; the main control chip is connected to the first relay interface module, the second relay interface module, and the touch screen.

[0013] Optionally, the first relay interface module includes a voltage divider resistor, an interface unit, a balancing resistor, and a feedback resistor;

[0014] The voltage divider resistor is connected to the voltage regulation unit; the interface unit is connected to the operational amplifier unit, the voltage divider resistor, and the balancing resistor; the balancing resistor is connected to the operational amplifier unit and the feedback resistor; and the feedback resistor is connected to the main control chip.

[0015] Optionally, the interface unit includes a normally open contact interface;

[0016] The normally open contact interface is connected to the operational amplifier unit, the voltage divider resistor, and the balancing resistor.

[0017] Optionally, the interface unit includes a normally closed contact interface;

[0018] The normally closed contact interface is connected to the operational amplifier unit, the voltage divider resistor, and the balancing resistor.

[0019] Optionally, the second relay interface module includes a voltage divider resistor, an interface unit, a balancing resistor, and a feedback resistor;

[0020] The voltage divider resistor is connected to the voltage regulation unit; the interface unit is connected to the operational amplifier unit, the voltage divider resistor, and the balancing resistor; the balancing resistor is connected to the operational amplifier unit and the feedback resistor; and the feedback resistor is connected to the main control chip.

[0021] Optionally, the main control chip is an STM32 microcontroller.

[0022] Optionally, it also includes a charging interface, which is connected to the power module and an external power source, and the power module is charged through the charging interface. Attached Figure Description

[0023] Figure 1 This is a structural block diagram of the present invention;

[0024] Figure 2 This is a partial schematic diagram of the present invention;

[0025] The attached diagram shows the following labels: 1. Main control module; 101. Voltage regulation unit; 102. Operational amplifier unit; 103. Main control chip; 2. Power supply module; 3. First relay interface module; 301. Normally open contact interface circuit; 302. Normally closed contact interface circuit; 4. Second relay interface module; 401. Contact interface circuit; 5. Touch screen; 6. Charging interface. Detailed Implementation

[0026] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0027] In the following description, when referring to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims. In the description of this application, it should be understood that the terms "first," "second," "third," etc., are used only to distinguish similar objects and are not necessarily used to describe a specific order or sequence, nor should they be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0028] See Figure 1 As shown, the present invention provides a relay measuring device, comprising: a main control module 1, a power supply module 2, a first relay interface module 3, a second relay interface module 4, a touch screen 5, and a charging interface 6; the main control module 1 is connected to the power supply module 2, the first relay interface module 3, the second relay interface module 4, and the touch screen 5; the charging interface 6 is connected to the power supply module 2 and an external power source, and the power supply module 2 is charged through the charging interface 6.

[0029] The main control module 1 includes a voltage regulation unit 101, an operational amplifier unit 102, and a main control chip 103. The voltage regulation unit 101 is connected to the main control chip 103, the power supply module 2, the first relay interface module 3, and the second relay interface module 4. The operational amplifier unit 102 is connected to the main control chip 103, the first relay interface module 3, and the second relay interface module 4. The main control chip 103 is connected to the first relay interface module 3, the second relay interface module 4, and the touch screen 5. The main control chip 103 is an STM32 microcontroller, and the power supply module 2 is a 12V battery. This invention enables operation without an external power supply through the power supply module 2. When the power supply module 2 (12V battery) cannot support its normal operation, it can be connected to an external power source through the charging interface 6 to charge the power supply module 2.

[0030] In one embodiment of this utility model, the first relay interface module 3 includes four sets of normally open contact interface circuits 301 and four sets of normally closed contact interface circuits 302, and the second relay interface module 4 includes four sets of contact interface circuits 401.

[0031] See Figure 2 The diagram shows a set of normally open contact interface circuits 301, a set of normally closed contact interface circuits 302, and a set of contact interface circuits 401.

[0032] Each normally open contact interface circuit 301 or normally closed contact interface circuit 302 included in the first relay interface module 3 includes a voltage divider resistor, an interface unit, a balancing resistor, and a feedback resistor. That is, the first relay interface module 3 includes a voltage divider resistor, an interface unit, a balancing resistor, and a feedback resistor. The voltage divider resistor is connected to the voltage regulation unit 101, at which time the output voltage of the voltage regulation unit 101 is 5V. The interface unit is connected to the operational amplifier unit 102, the voltage divider resistor, and the balancing resistor. The balancing resistor is connected to the operational amplifier unit 102 and the feedback resistor. The feedback resistor is connected to the main control chip 103. The interface unit of the normally open contact interface circuit 301 includes a normally open contact interface, which is connected to the operational amplifier unit 102, the voltage divider resistor, and the balancing resistor. The interface unit of the normally closed contact interface circuit 302 includes a normally closed contact interface, which is connected to the operational amplifier unit 102, the voltage divider resistor, and the balancing resistor.

[0033] The second relay interface module 4 includes a voltage divider resistor, an interface unit, a balancing resistor, and a feedback resistor in each group of contact interface circuits 401. That is, the second relay interface module 4 includes a voltage divider resistor, an interface unit, a balancing resistor, and a feedback resistor. The voltage divider resistor is connected to the voltage regulation unit 101, at which time the output voltage of the voltage regulation unit 101 is 6V. The interface unit is connected to the operational amplifier unit 102, the voltage divider resistor, and the balancing resistor. The balancing resistor is connected to the operational amplifier unit 102 and the feedback resistor. The feedback resistor is connected to the main control chip 103.

[0034] Both the first relay interface module 3 and the second relay interface module 4 are used to connect the relay to be measured. Through the normally open contact interface circuit 301 of the first relay interface module 3, the closed-type relay can be measured offline, which solves the problem in the prior art that the resistance of the normally open contact of the closed-type relay cannot be measured offline, which is a limitation. At the same time, through the first relay interface module 3 and the second relay interface module 4, the measuring device can be connected to various types of relays to realize the measurement of various types of relays.

[0035] The touch screen 5 is used to receive the model number of the relay to be measured; the main control module 1 outputs the target voltage for measuring the relay to be measured according to the model number, and obtains the measurement result of the relay to be measured; the touch screen 5 is also used to display the measurement result.

[0036] The following is a detailed description of the specific working process of the relay measuring device provided by this utility model in measuring the relay to be measured:

[0037] According to the model of the relay to be measured, the staff installs the relay to be measured in the first relay interface module 3 or the second relay interface module 4, so that the pins of the relay to be measured are connected in series in the main control module 1 circuit used to obtain the measurement results of the relay to be measured. When the relay to be measured is installed in the first relay interface module 3, the main control chip 103 controls the voltage regulation unit 101 to output a 5V voltage. When the relay to be measured is installed in the second relay interface module 4, the main control chip 103 controls the voltage regulation unit 101 to output a 6V voltage.

[0038] The main control chip 103 uses a series voltage divider resistor to collect the voltage at the pin of the relay to be measured. The voltage is amplified by the operational amplifier unit 102 and then input to the main control chip 103. Since the main control chip 103 is an STM32 microcontroller with ADC functionality, after receiving the voltage signal amplified by the operational amplifier unit 102, the main control chip 103 uses its own ADC function to measure the voltage at the pin of the relay to be measured. According to the amplification factor and the resistance setting ratio, the voltage is converted into the resistance value of the pin of the relay to be measured. This resistance value is the measurement result of the relay to be measured. After obtaining the resistance value of the pin of the relay to be measured, the main control chip 103 sends it to the touch screen 5 for display so that the staff can view it.

[0039] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A relay measuring device, characterized in that, include: Main control module, power supply module, first relay interface module, second relay interface module and touch screen; The main control module is connected to the power module, the first relay interface module, the second relay interface module, and the touch screen; Both the first relay interface module and the second relay interface module are used to connect to the relay to be measured; the touch screen is used to receive the model number of the relay to be measured; the main control module outputs a target voltage for measuring the relay to be measured based on the model number, thereby obtaining the measurement result of the relay to be measured; the touch screen is also used to display the measurement result.

2. The relay measuring device according to claim 1, characterized in that, The main control module includes a voltage regulation unit, an operational amplifier unit, and a main control chip; The voltage regulation unit is connected to the main control chip, the power supply module, the first relay interface module, and the second relay interface module; the operational amplifier unit is connected to the main control chip, the first relay interface module, and the second relay interface module; the main control chip is connected to the first relay interface module, the second relay interface module, and the touch screen.

3. A relay measuring device according to claim 2, characterized in that, The first relay interface module includes a voltage divider resistor, an interface unit, a balancing resistor, and a feedback resistor; The voltage divider resistor is connected to the voltage regulation unit; the interface unit is connected to the operational amplifier unit, the voltage divider resistor, and the balancing resistor; the balancing resistor is connected to the operational amplifier unit and the feedback resistor; and the feedback resistor is connected to the main control chip.

4. A relay measuring device according to claim 3, characterized in that, The interface unit includes a normally open contact interface; The normally open contact interface is connected to the operational amplifier unit, the voltage divider resistor, and the balancing resistor.

5. A relay measuring device according to claim 3, characterized in that, The interface unit includes a normally closed contact interface; The normally closed contact interface is connected to the operational amplifier unit, the voltage divider resistor, and the balancing resistor.

6. A relay measuring device according to claim 2, characterized in that, The second relay interface module includes a voltage divider resistor, an interface unit, a balancing resistor, and a feedback resistor; The voltage divider resistor is connected to the voltage regulation unit; the interface unit is connected to the operational amplifier unit, the voltage divider resistor, and the balancing resistor; the balancing resistor is connected to the operational amplifier unit and the feedback resistor; and the feedback resistor is connected to the main control chip.

7. A relay measuring device according to claim 2, characterized in that, The main control chip is an STM32 microcontroller.

8. A relay measuring device according to claim 1, characterized in that, It also includes a charging interface, which is connected to the power module and an external power source, and the power module is charged through the charging interface.

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