Electric appliance hot plug test system

Abstract

The utility model discloses a hot plug test system for an electric appliance. The hot plug test system comprises a connecting end and a controller, the connecting end is used for being electrically connected with an electric appliance; the controller comprises a microprocessor, the input end of the microprocessor is electrically connected with an electronic switch, the output end of the microprocessor is electrically connected with a first timer, a counter and a power control module, the input end of the first timer is connected with the input end of the microprocessor, and the output end of the first timer is connected with the output end of the microprocessor. The output end of the power supply control module is electrically connected with the connecting end; the output of the power supply control module is electrically connected with a load detection module, and the load detection module is electrically connected with the microprocessor; the system further comprises a second timer, the input end of the second timer is electrically connected with the microprocessor or the output end of the first timer, the output end of the second timer is electrically connected with the electronic switch, when the system is used, automatic operation of the system can be achieved only by manually triggering the physical switch once, and hot plug testing of an electric appliance is achieved. Moreover, the number of testing times can be more intuitively counted, and the system does not need to be watched by personnel, and is very convenient to operate.

Description

Technical Field

[0001] The utility model belongs to the technical field of test devices, and particularly relates to an electrical hot plug and unplug test system. Background Art

[0002] During the R & D process of electrical appliances, various tests need to be carried out, such as circuit reliability, life test and aging test, etc., to ensure that the product quality passes. However, in daily life, electrical appliances will encounter various usage scenarios. For example, for the start and stop of a fan, some users do not control the start and stop of the fan through the conventional switch button during the use process, but directly disconnect the power supply or directly turn on the power supply to start the electrical appliance through the power supply. This will cause damage to the electrical appliance, but this point is often ignored during the product test process, and it is also not easy to operate the hot plug and unplug test for electrical appliances. Content of the Utility Model

[0003] The purpose of the utility model is to provide an electrical hot plug and unplug test system to solve the problems put forward in the above background art.

[0004] To achieve the above purpose, the utility model provides the following technical solutions:

[0005] An electrical hot plug and unplug test system includes a connection end and a controller;

[0006] The connection end is used for electrically connecting with an electrical appliance;

[0007] The controller includes a microprocessor. The input end of the microprocessor is electrically connected with an electronic switch. The output end of the microprocessor is electrically connected with a timer 1, a counter and a power control module. The input end of the timer 1 is connected with the input end of the microprocessor. The output end of the power control module is electrically connected with the connection end; the output of the power control module is electrically connected with a load detection module, and the load detection module is electrically connected with the microprocessor;

[0008] It further includes a timer 2. The input end of the timer 2 is electrically connected with the output end of the microprocessor or the timer 1, and the output end of the timer 2 is electrically connected with the electronic switch.

[0009] As a further technical solution, it further includes a time adjustment module. The output end of the time adjustment module is respectively electrically connected with the timer 1 and the timer 2.

[0010] As a further technical solution, the connection end is several different sockets.

[0011] As a further technical solution, a voltage conversion module is provided in the connection end.

[0012] Further technical solution: The connection end is fixedly provided on the bottom plate, and the controller is installed at one end of the bottom plate.

[0013] Advantages of the present utility model:

[0014] During use, the operator only needs to trigger the physical switch once to realize the automatic operation of the system, achieve the hot plug and unplug test of the electrical appliance, and there is a counter that can more intuitively count the number of tests. Through the load detection module, the situation of the electrical appliance can be detected. When the electrical appliance is damaged, the system can automatically stop running. Since the hot plug and unplug test requires tens of thousands or hundreds of thousands of times, the time consumed is very long, and this system does not require personnel to stay on guard, and the operation is very convenient.

[0015] Other features and advantages of the present utility model will be described in detail in the subsequent specific implementation part. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 : Three-dimensional structure diagram of the present utility model.

[0017] Figure 2 : Logic of the present utility model Figure 1 .

[0018] Figure 3 : Logic of the present utility model Figure 2 .

[0019] Figure 4 : Logic of the present utility model Figure 3 .

[0020] Reference numerals: 11 - connection end, 12 - on the bottom plate, 2 - controller, 21 - microprocessor, 22 - electronic switch, 23 - timer 1, 24 - counter, 25 - power control module, 26 - load detection module, 27 - timer 2, 28 - time adjustment module. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model.

[0022] Please refer to Figures 1-4 ;

[0023] The test system described in the present utility model can conveniently realize the hot plug and unplug test function and is convenient for the operator to use. Specifically, it includes a connection end 11 and a controller 2; during use, only the input end of the electrical appliance needs to be electrically connected to the connection end 11, and then the controller 2 is used to realize the functions of timed power-on and timed disconnection, achieving the hot plug and unplug test effect.

[0024] In this embodiment, the controller 2 includes a microprocessor 21. The input end of the microprocessor 21 is electrically connected to an electronic switch 22. It should be noted that the electronic switch 22 should also be connected to a physical switch for providing a first trigger signal. The output end of the microprocessor 21 is electrically connected to a timer 1 23, a counter 24, and a power control module 25. The output end of the timer 1 23 is electrically connected to the input end of the microprocessor 21. The output end of the power control module 25 is electrically connected to the connection end 11. The power control module 25 is used to provide current and voltage to the connection end 11, but its start and stop require a signal from the microprocessor 21. The output end of the timer 2 27 is electrically connected to the electronic switch 22, and the electronic switch 22 is electrically connected to the counter 24. This counter 24 can be connected to a display so that the operator can more intuitively see the number of tests;

[0025] More specifically, a start signal is provided to the electronic switch 22 through the physical switch. The electronic switch 22 simultaneously outputs a signal to the microprocessor 21. The microprocessor 21 simultaneously sends signals to the timer 1 23, the counter 24, and the power control module 25. The timer 1 23 starts timing, the counter 24 records 1 time, and the power control module 25 outputs current and voltage to the connection end 11. At this time, the electrical appliance operates normally. Assume that the preset time of the timer 1 23 is 5 seconds. When the countdown of 5 seconds ends, the timer 1 23 sends a signal to the microprocessor 21. The microprocessor 21 sends a disconnection signal to the power control module 25. The power control module 25 stops outputting current and voltage to the connection end 11. At this time, the electrical appliance is in a disconnected state, thus simulating the hot plugging process;

[0026] Refer to Figure 2 and Figure 3 , when the microprocessor 21 sends a termination signal to the power control module 25, the timer 2 27 is triggered. In this embodiment, the input end of the timer 2 27 is connected to the microprocessor 21 or the timer 1 23, that is, a trigger signal can be sent to the timer 2 27 through the timer 1 23 or the microprocessor 21, and the timer 2 27 starts timing. Assume the time is 2 seconds. When the timing of the timer 2 27 ends, a signal is sent to the electronic switch 22. The electronic switch 22 sends a start signal to the microprocessor 21 again, thus entering the second power-on process, and at the same time the counter 24 records 2 times, and so on in a loop;

[0027] Further, the output of the power control module 25 is electrically connected to a load detection module 26, which is used to determine whether an electrical appliance is connected or whether the electrical appliance is damaged. It should be noted that when the power control module 25 is not connected to the electrical appliance or when the electrical appliance is damaged, the connection terminal 11 is actually in an open state or close to an open state. At this time, there is only voltage but no current or a very small current. Only after the connection terminal 11 is connected to the electrical appliance will current be generated. Using this characteristic, the load detection module 26 can detect the magnitude of the output current of the power control module 25 to judge the load situation. In this embodiment, the output terminal of the load detection module 26 is electrically connected to the microprocessor 21. When the electrical appliance is damaged during the hot plug and unplug detection process, it can be detected by the load detection module 26, and then a signal is sent to the microprocessor 21 to stop the operation of the system. At this time, the counter 24 stays at the number of the last test.

[0028] When the electrical appliance is damaged at the moment of disconnection, the current detected by the load detection module 26 after being turned on should be very small, equivalent to disconnection. When the electrical appliance is damaged at the moment of being turned on, the current detected by the load detection module 26 should be very large, equivalent to a short circuit. Therefore, a threshold range should be set in the load detection module 26. Whether the electrical appliance is disconnected or short-circuited, it is not within the threshold range and can be detected by the load detection module 26, acting as an insurance.

[0029] In addition, when there is water at the connection terminal 11, it is also equivalent to a short-circuit state and can also be detected by the load detection module 26, thereby stopping the operation of the system.

[0030] During this process, the operator only needs to trigger a physical switch once to realize the automatic operation of the system, perform the hot plug and unplug test on the electrical appliance, and there is a counter to more intuitively display the number of tests. The load detection module 26 can detect the situation of the electrical appliance. When the electrical appliance is damaged, the system can automatically stop running. Since the hot plug and unplug test requires tens of thousands or hundreds of thousands of times, the time consumed is very long, and this system does not require personnel to stay on guard, and the operation is very convenient.

[0031] In the embodiment of the present utility model, referring to Figure 4 , it further includes a time adjustment module 28. The output terminals of the time adjustment module 28 are respectively electrically connected to the timer one 23 and the timer two 27. The time of the timer one 23 and the timer two 27 can be adjusted through the time adjustment module 28 to meet the tests of different electrical appliances. Preferably, the time of the timer one 23 should be greater than the time of the timer two 27.

[0032] In the embodiment of the present utility model, the connection end is several different sockets, such as a three-hole female socket, a two-hole female socket, a USB plug, etc., to meet the tests of different electrical appliances. It should be noted that the voltages output by the power control module 25 are 220V, 330V, etc. Of course, this voltage is adjustable and should conform to the rated voltages of most electrical appliances on the market. However, for smaller electrical appliances, such as a small fan driven by USB, its usually required rated voltage is 12V. Therefore, a voltage conversion module is specially set at the connection end 11 for such small products to meet the test requirements.

[0033] In the embodiment of the present utility model, the connection end 11 is fixedly arranged on the bottom plate 12, the controller 2 is installed at one end of the bottom plate, and the connection end 11 can be a common socket strip with a USB connection end 11 on the market, which can test multiple electrical appliances at the same time, improve work efficiency, and the overall test system is very simple and can be made with simple parts.

[0034] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present utility model, the present utility model can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0035] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An electrical appliance hot-swap test system, comprising a connection terminal (11) and a controller (2), characterized in that: The connection end (11) is used for electrical connection with an electrical appliance; The controller (2) comprises a microprocessor (21), the input end of the microprocessor (21) is electrically connected to an electronic switch (22), the output end of the microprocessor (21) is electrically connected to a timer 1 (23), a counter (24) and a power control module (25), the input end of the timer 1 (23) is connected to the input end of the microprocessor (21), the output end of the power control module (25) is electrically connected to the connection end (11); the output of the power control module (25) is electrically connected to a load detection module (26), and the load detection module (26) is electrically connected to the microprocessor (21); It also includes a timer 2 (27), the input end of the timer 2 (27) is electrically connected to the output end of the microprocessor (21) or the timer 1 (23), and the output end of the timer 2 (27) is electrically connected to the electronic switch (22).

2. An electrical appliance hot-swap test system according to claim 1, characterized in that: It also includes a time adjustment module (28), the output end of which is electrically connected to timer 1 (23) and timer 2 (27) respectively.

3. An electrical appliance hot-swap test system according to claim 1, characterized in that: The connection end (11) is a plurality of different sockets.

4. An electrical appliance hot-swap test system according to claim 3, characterized in that: A voltage transformation module is provided in the connection end (11).

5. The electrical appliance hot-swap test system according to claim 1, characterized in that: The connection end (11) is fixedly mounted on a base plate (12), and the controller (2) is mounted on one end of the base plate.

Images