Safe and portable high-frequency switching power supply module output voltage automatic measuring device

Abstract

A safe and portable high-frequency switching power supply module output voltage automatic measuring device comprises an aviation plug, jacks matched with a high-frequency switching power supply module are arranged on the aviation plug, and conductive metal is arranged in a jack matched with a direct-current positive pole pin and a jack matched with a direct-current negative pole pin. The other jacks are made of insulating materials; the aviation plug is connected with the voltage detection device. The utility model provides a safe and portable high-frequency switching power supply module output voltage automatic measuring device, except that the part, connected with the positive and negative binding posts of the module, in the aviation plug is made of conductive metal, other parts are made of PVC insulation materials, and safety and reliability are ensured. And meanwhile, the safety risk of direct current system short circuit caused by positive and negative electrode lap joint when the output voltage of the high-frequency switching power supply module is measured during maintenance work is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of voltage measurement, in particular to an automatic measuring device for the output voltage of a safe and portable high-frequency switching power supply module. Background Technique

[0002] During the overhaul and maintenance of the DC system, whether replacing or maintaining the high-frequency switching power supply module, it is necessary to measure the DC output voltage of the module. The TEP-M30 / 220-F high-frequency switching power supply module converts the AC voltage into a DC output voltage, which needs to be measured with a multimeter at the positive and negative terminal posts of the plug. This method is not only traditional, but also due to the unreasonable design of the terminal posts of the output plug of the module, it is extremely easy to directly lap the positive and negative test leads of the multimeter or lap them on the metal shell, thus causing a short circuit in the 220V DC system, and the risk coefficient is extremely high.

[0003] The high-frequency switching power supply module of the TEP-M-F series converts the AC380V voltage into the DC voltage required by the DC system. During the maintenance of this module, because the digital tube display value of the high-frequency switching power supply module often drifts, it is necessary to measure at the wiring terminals of the DC output plug. The wiring terminals of the DC output plug of the module are shown in the following figure, where pins 1 and 2 are the DC output positive poles, and pins 3 and 4 are the DC negative poles.

[0004] The traditional method generally uses a multimeter with test leads. The red and black meters of the multimeter are in contact with the plug wiring terminals to measure the DC output voltage of the high-frequency switching power supply module. Due to the unreasonable design of the terminal posts of the DC output plug of this series of modules: the positive and negative terminals are close to each other, the positive and negative terminals are cylindrical, and the outer shells of the plugs are all metal, it is extremely easy for the test leads of the multimeter to slip, resulting in the situation that the positive and negative wirings are directly lapped or lapped through the metal shell, thus causing a short circuit in the 220V DC system, and the personal safety and equipment safety during maintenance are easily threatened. Therefore, a safe and reliable automatic measuring device for the output voltage of a high-frequency switching power supply module can effectively reduce the risk of short circuit in the DC system. Summary of the Invention

[0005] The technical problem to be solved by the utility model is to provide an automatic measuring device for the output voltage of a safe and portable high-frequency switching power supply module.

[0006] To solve the above technical problem, the technical solution adopted by the utility model is: an automatic measuring device for the output voltage of a safe and portable high-frequency switching power supply module, including an aviation plug, on which there are jacks matching with the high-frequency switching power supply module. Conductive metals are arranged in both a jack matching with the DC positive pin and a jack matching with the DC negative pin, and the remaining jacks use insulating materials; the aviation plug is connected to a voltage detection device.

[0007] Preferably, a voltage measurement circuit is provided inside the voltage detection device, and the conductive metal is connected to the voltage measurement circuit.

[0008] Preferably, it further includes a liquid crystal display screen, which is arranged at the rear side of the voltage detection device and is connected to the voltage measurement circuit.

[0009] The utility model provides an automatic measuring device for the output voltage of a safe and portable high-frequency switching power supply module. Except for the part where the inside of the aviation plug is connected to the positive and negative connection terminals of the module and uses conductive metal, other parts all use PVC insulating materials to ensure safety and reliability. At the same time, it reduces the safety risk of short-circuiting the DC system due to the positive and negative poles being connected when measuring the output voltage of the high-frequency switching power supply module during maintenance work. Brief Description of the Drawings

[0010] The following further describes the utility model in conjunction with the drawings and embodiments:

[0011] Figure 1 It is a schematic structural diagram of a high-frequency switching power supply module;

[0012] Figure 2 It is a schematic structural diagram of the utility model;

[0013] Figure 3 It is a schematic rear structural diagram of the utility model;

[0014] Figure 4 It is a voltage measurement circuit diagram of the utility model. Detailed Embodiment

[0015] As Figure 2-3 shown, an automatic measuring device for the output voltage of a safe and portable high-frequency switching power supply module includes an aviation plug 1. On the aviation plug 1, there are jacks 2 that cooperate with the high-frequency switching power supply module. Conductive metals 3 are arranged in both a jack 2 that cooperates with the DC positive pin and a jack 2 that cooperates with the DC negative pin, and the remaining jacks 2 use insulating materials; the aviation plug 1 is connected to a voltage detection device 4.

[0016] Preferably, as Figure 4 shown, a voltage measurement circuit is provided inside the voltage detection device 4, and the conductive metal 3 is connected to the voltage measurement circuit.

[0017] Preferably, it further includes a liquid crystal display screen 5, which is arranged at the rear side of the voltage detection device 4 and is connected to the voltage measurement circuit.

[0018] This device changes the traditional method and can realize the automatic and real-time measurement of the output voltage of the high-frequency switching power supply module without using a multimeter.

[0019] Meanwhile, reduce the safety risk of short circuit in the DC system caused by the connection of the positive and negative poles when measuring the output voltage of the high-frequency switching power supply module during maintenance work.

[0020] The above embodiments are only the preferred technical solutions of the present invention, and should not be regarded as limitations to the present invention. The protection scope of the present invention should be the technical solutions recorded in the claims, including the equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, the equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A safe and portable automatic output voltage measuring device for a high-frequency switching power supply module, characterized in that: The invention comprises an aviation plug (1), on which a socket (2) matching with a high-frequency switching power supply module is provided, a socket (2) matching with a DC positive electrode pin and a socket (2) matching with a DC negative electrode pin are both provided with conductive metal (3), and the remaining sockets (2) are made of insulating material; the aviation plug (1) is connected to a voltage detection device (4).

2. A safe and portable automatic output voltage measuring device for a high-frequency switching power supply module according to claim 1, characterized in that: The voltage detection device (4) is provided with a voltage measurement circuit, and the conductive metal (3) is connected to the voltage measurement circuit.

3. A safe and portable automatic output voltage measuring device for a high-frequency switching power supply module according to claim 2, characterized in that: It also comprises a liquid crystal display screen (5), which is arranged on the rear side of the voltage detection device (4) and is connected to the voltage measurement circuit.

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