Extension socket detection device

Abstract

The utility model discloses an extension socket detection device which comprises a control unit, a line sequence polarity detection unit, a detection signal input switch, a detection signal output switch and a display unit. Two ends of the detection signal input switch are respectively connected with a first end of the to-be-detected extension socket and the control unit, and two ends of the detection signal output switch are respectively connected with a second end of the to-be-detected extension socket and the line sequence polarity detection unit; a detection port of the line sequence polarity detection unit is connected with the control unit; after the detection signal input switch and the detection signal output switch are controlled to be closed, the control unit inputs a detection signal to the first end of the to-be-detected extension socket and outputs a detection control signal to the line sequence polarity detection unit through the second end of the to-be-detected extension socket, and then the control unit receives detection information sent by a detection port of the line sequence polarity detection unit. The detection result is sent to the display unit to be displayed; the technical problems of inaccurate detection result and low detection efficiency due to the fact that power-on detection needs to be carried out in extension socket detection in the prior art are solved.

Description

Technical Field

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

[0002] With the rapid development of science and technology, a wide variety of electrical devices are being used by users. Typically, this increase in the number of electrical devices requires the use of power strips. To protect both users and electrical devices, power strips must be inspected during manufacturing to prevent wiring polarity errors.

[0003] In the related art, manufacturers typically perform a direct power-on test on power strips to detect the polarity of their wiring. However, direct power-on testing can damage the power strip's internal power circuitry due to the applied detection voltage not being consistent with the DC power supply. Furthermore, this testing method can be difficult to distinguish when the neutral and ground wires of the power strip are misaligned, leading to test errors. Furthermore, this testing method requires extensive manual labor, resulting in low testing efficiency. Therefore, providing a detection device that can accurately and quickly detect the wiring sequence of a power strip has become a technical problem urgently needed to be solved by those skilled in the art. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems in the prior art. To this end, the present invention provides an efficient and accurate socket detection device.

[0005] In the first aspect, an embodiment of the present invention provides a socket detection device, which includes a control unit, a line sequence polarity detection unit, a detection signal input switch, a detection signal output switch and a display unit; wherein, the two ends of the detection signal input switch are respectively connected to the first end of the socket to be tested and the control unit, and the two ends of the detection signal output switch are respectively connected to the second end of the socket to be tested and the line sequence polarity detection unit; the detection port of the line sequence polarity detection unit is connected to the control unit; after controlling the detection signal input switch and the detection signal output switch to be closed, the control unit inputs a detection signal to the first end of the socket to be tested, and outputs a detection control signal to the line sequence polarity detection unit through the second end of the socket to be tested, so that the control unit receives the detection information sent by the detection port of the line sequence polarity detection unit, and sends the detection result to the display unit for display; it solves the technical problems in the related art that the socket detection requires power-on detection, which is easy to burn out the internal power supply circuit, the detection result is inaccurate and the detection efficiency is low; and provides a detection device that can accurately and quickly detect the line sequence of the socket.

[0006] According to some other embodiments of the present invention, the power strip detection device further includes a withstand voltage insulation test unit and a withstand voltage detection switch;

[0007] The withstand voltage insulation test unit is connected to the control unit;

[0008] The high-voltage output end of the withstand voltage insulation test unit is connected to the first end of the withstand voltage detection switch, and the second end of the withstand voltage detection switch short-circuits the live wire and the neutral wire of the first end of the socket strip to be tested;

[0009] The loop grounding terminal of the withstand voltage insulation test unit is connected to the ground wire of the first end of the socket strip to be tested.

[0010] According to some other embodiments of the present invention, the power strip detection device further includes a ground resistance testing unit;

[0011] The first test end of the ground resistance test unit is connected to the ground wire of the first end of the socket strip to be tested, and the second test end of the ground resistance test unit is connected to the ground wire of the second end of the socket strip to be tested.

[0012] According to some other embodiments of the power strip detection device of the present utility model, the detection signal input switch includes a first high-voltage relay, a second high-voltage relay and a third high-voltage relay;

[0013] The detection signal output switch includes a fourth high-voltage relay, a fifth high-voltage relay and a sixth high-voltage relay;

[0014] Two ends of the first high-voltage relay are respectively connected to the live wire of the first end of the socket strip to be tested and the control unit, two ends of the second high-voltage relay are respectively connected to the neutral wire of the first end of the socket strip to be tested and the control unit, and two ends of the third high-voltage relay are respectively connected to the ground wire of the first end of the socket strip to be tested and the control unit;

[0015] The two ends of the fourth high-voltage relay are respectively connected to the live wire of the second end of the socket strip to be tested and the first input end of the line sequence polarity detection unit, the two ends of the fifth high-voltage relay are respectively connected to the neutral wire of the second end of the socket strip to be tested and the second input end of the line sequence polarity detection unit, and the two ends of the sixth high-voltage relay are respectively connected to the ground wire of the second end of the socket strip to be tested and the third input end of the line sequence polarity detection unit.

[0016] According to some other embodiments of the present invention, the power strip detection device comprises a first optocoupler detection circuit, a second optocoupler detection circuit, and a third optocoupler detection circuit.

[0017] The input end of the first optical coupler detection circuit is the first input end of the line sequence polarity detection unit, and the output end of the first optical coupler detection circuit is connected to the control unit;

[0018] The input end of the second optical coupler detection circuit is the second input end of the line sequence polarity detection unit, and the output end of the second optical coupler detection circuit is connected to the control unit;

[0019] The input end of the third optocoupler detection circuit is the third input end of the line sequence polarity detection unit, and the output end of the third optocoupler detection circuit is connected to the control unit.

[0020] According to other embodiments of the socket strip detection device of the present invention, the withstand voltage insulation test unit includes a withstand voltage insulation tester, and the withstand voltage detection switch includes a seventh high-voltage relay and an eighth high-voltage relay; the high-voltage output end of the withstand voltage insulation tester is respectively connected to the first end of the seventh high-voltage relay and the first end of the eighth high-voltage relay, the second end of the seventh high-voltage relay is connected to the live wire of the first end of the socket strip to be tested, the second end of the eighth high-voltage relay is connected to the neutral wire of the first end of the socket strip to be tested, and the loop ground wire of the withstand voltage insulation tester is connected to the ground wire of the first end of the socket strip to be tested.

[0021] According to some other embodiments of the socket strip detection device of the present invention, the ground resistance testing unit includes a ground resistance tester, a first test end of the ground resistance tester is connected to the ground wire of the first end of the socket strip to be tested, and a second test end of the ground resistance tester is connected to the ground wire of the second end of the socket strip to be tested.

[0022] According to some other embodiments of the socket strip detection device of the present invention, the first end of the socket strip to be tested is the plug interface of the socket strip to be tested, and the second end of the socket strip to be tested is the socket interface of the socket strip to be tested;

[0023] or,

[0024] The first end of the power strip to be tested is the socket interface of the power strip to be tested, and the second end of the power strip to be tested is the plug interface of the power strip to be tested.

[0025] According to some other embodiments of the socket strip detection device of the present invention, the control unit includes an MCU. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the components of a specific embodiment of a power strip detection device according to the present utility model;

[0027] Figure 2 This is a schematic diagram of the components of another specific embodiment of a power strip detection device according to an embodiment of the present utility model;

[0028] Figure 3 This is a schematic diagram of the components of another specific embodiment of a power strip detection device according to an embodiment of the present utility model;

[0029] Figure 4 This is a test structure principle diagram of a specific embodiment of a power strip detection device according to an embodiment of the present utility model;

[0030] Figure 5 This is a test structure principle diagram of a line sequence polarity detection unit of a specific embodiment of a power strip detection device according to the present utility model. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the concept and technical effects of the present invention in conjunction with the embodiments to fully understand the purpose, features, and effects of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without inventive effort are also within the scope of protection of the present invention.

[0032] In the description of the embodiments of this utility model, if "several" is mentioned, it means more than one; if "plurality" is mentioned, it means more than two; if "greater than," "less than," or "exceeds," it should be understood as excluding the number itself; if "above," "below," or "within" is mentioned, it should be understood as including the number itself. If "first," "second," "third," etc. are mentioned, they should be understood as being used to distinguish technical features, and should not be understood as indicating or implying relative importance, implicitly indicating the number of the indicated technical features, or implicitly indicating the order of the indicated technical features.

[0033] Reference Figure 1The present invention provides a power strip detection device comprising a control unit, a line sequence polarity detection unit, a detection signal input switch, a detection signal output switch, and a display unit. The control unit is respectively connected to the input end of the display unit, the detection port of the line sequence polarity detection unit, and one end of the detection signal input switch. The other end of the detection signal input switch is connected to the first end of the power strip to be tested. The two ends of the detection signal output switch are respectively connected to the second end of the power strip to be tested and the input end of the line sequence polarity detection unit. In this embodiment, after the detection signal input switch and the detection signal output switch are closed, the control unit inputs a detection signal to the first end of the power strip to be tested via the detection signal input switch, and inputs a detection signal to the power strip detection unit via the detection signal output switch via the line corresponding to the second end of the power strip to be tested. Then, after receiving the detection information via the detection port of the power strip detection unit, the control unit displays the current detection result on the display unit. This solves the technical problems in the related art of performing line sequence polarity detection on the power strip, which may burn out the power strip's internal power circuit, have low detection efficiency, and are difficult to detect misalignment between the neutral wire and the ground wire, resulting in inaccurate detection results.

[0034] In some embodiments, the on-off states of the detection signal input switch and the detection signal output switch in the above embodiments are controlled by a control unit.

[0035] Reference Figure 2 In some embodiments, after the line sequence polarity of the socket strip to be tested is detected, its withstand voltage insulation performance also needs to be tested. In this embodiment, the socket strip detection device also includes a withstand voltage insulation test unit and a withstand voltage detection switch. The withstand voltage insulation test unit is communicatively connected to the control unit. The high voltage output end of the withstand voltage insulation test unit is connected to the first end of the withstand voltage detection switch. The second end of the withstand voltage detection switch short-circuits the live wire and the neutral wire of the first end of the socket strip to be tested, and the loop grounding end of the withstand voltage test unit is connected to the ground wire of the first end of the socket strip to be tested. In this embodiment, after the withstand voltage insulation test unit is started (it can be controlled to start by the control unit), the withstand voltage insulation test is performed on the socket strip to be tested according to the withstand voltage test process, and after the test result is sent to the control unit, the control unit sends the test result to the display unit for display.

[0036] Reference Figure 3In some embodiments, after the line sequence polarity of the socket strip to be tested is detected, its grounding resistance needs to be detected to determine whether the grounding resistance performance of the socket strip to be tested meets the requirements. In this embodiment, the socket strip detection device also includes a grounding resistance testing unit, which is communicatively connected to the control unit, and the first test end of the grounding resistance testing unit is connected to the ground wire of the first end of the socket strip to be tested, and the second test end of the grounding resistance testing unit is connected to the ground wire of the second end of the socket strip to be tested; then, after starting the grounding resistance testing unit (which can be controlled to start by the control unit), the grounding resistance of the socket strip to be tested is tested according to the test process of the grounding resistance testing unit, and after the test result is transmitted to the control unit, the control unit sends it to the display unit for display.

[0037] Reference Figure 4 In some embodiments, the first end of the socket strip to be tested described in each embodiment is the plug interface of the socket strip to be tested, and the second end of the socket strip to be tested is the socket interface of the socket strip to be tested; or, the first end of the socket strip to be tested is the socket interface of the socket strip to be tested, and the second end of the socket strip to be tested is the plug interface of the socket strip to be tested. In the following embodiments, the first end of the socket strip to be tested is the plug interface of the socket strip to be tested, and the second end of the socket strip to be tested is the socket interface of the socket strip to be tested.

[0038] Reference Figure 4In some embodiments, the detection signal input switch described in the above embodiment includes a first high-voltage relay K1, a second high-voltage relay K2, and a third high-voltage relay K3, and the detection signal output switch includes a fourth high-voltage relay K4, a fifth high-voltage relay K5, and a sixth high-voltage relay K6; wherein the first high-voltage relay K1 has two terminals connected to the live wire of the plug interface of the tested socket and a control unit, the second high-voltage relay K2 has two terminals connected to the neutral wire of the plug interface of the tested socket and a control unit, and the third high-voltage relay K3 has two terminals connected to the ground wire of the plug interface of the tested socket and a control unit. In this embodiment, the control unit is connected through the line interface provided by the line sequence polarity detection unit, avoiding excessive wiring or disconnection operations during the detection process. The fourth high-voltage relay K4 has two terminals connected to the live wire of the socket interface of the tested socket and a first input terminal of the line sequence polarity detection unit, the fifth high-voltage relay K5 has two terminals connected to the neutral wire of the socket interface of the tested socket and a second input terminal of the line sequence polarity detection unit, and the sixth high-voltage relay K6 has two terminals connected to the ground wire of the socket interface of the tested socket and a third input terminal of the line sequence polarity detection unit. In this embodiment, a detection circuit is provided for each line (live wire, neutral wire, and ground wire) of the power strip to be tested, enabling rapid testing of all three lines, effectively improving detection efficiency. In other embodiments, to reduce equipment costs, only one detection circuit can be provided to sequentially test the line sequence of the live wire, neutral wire, and ground wire of the power strip to be tested, but this implementation method has lower detection efficiency.

[0039] Reference Figure 5 In some embodiments, to avoid directly powering on the power strip to be tested for testing, the power strip to be tested is tested in a low-voltage signal state. The line sequence polarity detection unit described in the above embodiment includes a first optocoupler detection circuit U1, a second optocoupler detection circuit U2, and a third optocoupler detection circuit U3. In this embodiment, the input end of the first optocoupler detection circuit U1 is the first input end of the line sequence polarity detection unit, and the output end TEST1 of the first optocoupler detection circuit U1 is connected to the control unit; the input end of the second optocoupler detection circuit U2 is the second input end of the line sequence polarity detection unit, and the output end TEST2 of the second optocoupler detection circuit U2 is connected to the control unit; the input end of the third optocoupler detection circuit U3 is the third input end of the line sequence polarity detection unit, and the output end TEST3 of the third optocoupler detection circuit U3 is connected to the control unit. In this embodiment, each optocoupler detection circuit is usually connected in series with a resistor for voltage divider protection in actual applications.

[0040] Combine Figure 4 and Figure 5, this embodiment describes the specific process of the socket detection device detecting the line sequence polarity of the socket to be tested. In this embodiment, the control unit is implemented by the MCU, and the display unit is implemented by the display. Specifically, when detecting the line sequence of the socket to be tested, the relays corresponding to the socket to be tested are closed in sequence, and when detecting the line sequence polarity of the live wire of the socket to be tested, by closing the first high-voltage relay K1 and the fourth high-voltage relay K4, the low-voltage detection signal VCC output by the control unit is output to the first optocoupler detection circuit U1 through the live wire of the socket to be tested, and then, when the line sequence of the live wire of the socket to be tested is correctly corresponding, the output terminal TEST1 of the first optocoupler detection circuit U1 outputs the corresponding detection signal to the control unit, and the control unit outputs the line sequence polarity corresponding detection result to the display for display; when the line sequence of the socket to be tested is misaligned, the control unit cannot receive the detection signal, and the control unit outputs the misaligned detection result to the display for display. In this embodiment, the line sequence polarity detection process of the neutral wire and the ground wire of the tested socket strip corresponds to the detection process of the live wire. During the detection process, it is only necessary to close the corresponding high-voltage relay, disconnect other relays, and receive the detection signal on the corresponding optocoupler detection circuit. It will not be elaborated here.

[0041] Reference Figure 4 In some embodiments, the withstand voltage insulation test unit includes a withstand voltage insulation tester, and the withstand voltage detection switch includes a seventh high-voltage relay K7 and an eighth high-voltage relay K8. In this embodiment, the withstand voltage insulation tester is communicatively connected to the control unit to receive the control of the control unit and transmit the test results to the control unit; the high-voltage output end of the withstand voltage insulation tester is connected to the first end of the seventh high-voltage relay K7 and the first end of the eighth high-voltage relay K8, the second end of the seventh high-voltage relay K7 is connected to the live wire of the plug interface (i.e., the first end) of the socket to be tested, the second end of the eighth high-voltage relay K8 is connected to the neutral wire of the plug interface of the socket to be tested, and the loop ground wire of the withstand voltage insulation tester is connected to the ground wire of the plug interface of the socket to be tested. Furthermore, after the withstand voltage insulation tester performs a withstand voltage insulation test on the socket to be tested, the test results are transmitted to the control unit, and the control unit sends the results to the display unit to display the results.

[0042] Reference Figure 4 In some embodiments, the ground resistance test unit includes a ground resistance tester. In this embodiment, the ground resistance tester is communicatively connected to the control unit to interface with the control unit and transmit the test results to the control unit. The first test end of the ground resistance tester is connected to the ground wire of the plug interface (i.e., the first end) of the power strip to be tested, and the second end of the ground resistance tester is connected to the ground wire of the socket interface (i.e., the second end) of the power strip to be tested. After the ground resistance tester performs a ground resistance test on the power strip to be tested, the test result is transmitted to the control unit, and the control unit sends the test result to the display unit for display.

[0043] In summary, the embodiment of the utility model provides a socket detection device. After controlling the detection signal input switch and the detection signal output switch to be closed, the control unit inputs a detection signal to the first end of the socket to be tested, and outputs a detection control signal to the line sequence polarity detection unit through the second end of the socket to be tested, thereby enabling the control unit to receive the detection information sent by the detection port of the line sequence polarity detection unit and send the detection result to the display unit for display. It solves the technical problems in the related art that socket detection requires power-on detection, which is prone to burning the internal power circuit, inaccurate detection results, and low detection efficiency. At the same time, a withstand voltage insulation test unit and a ground resistance test unit are provided to test the withstand voltage insulation performance and ground resistance performance of the socket to be tested, providing a socket detection device with accurate, efficient, and comprehensive detection.

[0044] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various modifications can be made within the scope of knowledge possessed by a person skilled in the art without departing from the spirit of the present invention. In addition, the embodiments of the present invention and the features of the embodiments can be combined with each other unless there is a conflict.

Claims

1. A power strip detection device, characterized in that: It includes a control unit, a line sequence polarity detection unit, a detection signal input switch, a detection signal output switch and a display unit; The two ends of the detection signal input switch are respectively connected to the first end of the socket to be tested and the control unit, and the two ends of the detection signal output switch are respectively connected to the second end of the socket to be tested and the line sequence polarity detection unit; the detection port of the line sequence polarity detection unit is connected to the control unit, and the control unit is connected to the display unit; wherein, the control unit sends a detection signal through the detection signal output switch, and after receiving the detection information through the detection port of the line sequence polarity detection unit, sends the detection result to the display unit for display.

2. The socket detection device according to claim 1, characterized in that: The power strip detection device also includes a withstand voltage insulation test unit and a withstand voltage detection switch; The withstand voltage insulation test unit is connected to the control unit; The high-voltage output end of the withstand voltage insulation test unit is connected to the first end of the withstand voltage detection switch, and the second end of the withstand voltage detection switch short-circuits the live wire and the neutral wire of the first end of the socket strip to be tested; The loop grounding terminal of the withstand voltage insulation test unit is connected to the ground wire of the first end of the socket strip to be tested.

3. The socket detection device according to claim 2, characterized in that: The socket detection device further includes a ground resistance testing unit; The first test end of the ground resistance test unit is connected to the ground wire of the first end of the socket strip to be tested, and the second test end of the ground resistance test unit is connected to the ground wire of the second end of the socket strip to be tested.

4. The socket detection device according to any one of claims 1 to 3, characterized in that: The detection signal input switch includes a first high-voltage relay, a second high-voltage relay and a third high-voltage relay; The detection signal output switch includes a fourth high-voltage relay, a fifth high-voltage relay and a sixth high-voltage relay; Two ends of the first high-voltage relay are respectively connected to the live wire of the first end of the socket strip to be tested and the control unit, two ends of the second high-voltage relay are respectively connected to the neutral wire of the first end of the socket strip to be tested and the control unit, and two ends of the third high-voltage relay are respectively connected to the ground wire of the first end of the socket strip to be tested and the control unit; The two ends of the fourth high-voltage relay are respectively connected to the live wire of the second end of the socket strip to be tested and the first input end of the line sequence polarity detection unit, the two ends of the fifth high-voltage relay are respectively connected to the neutral wire of the second end of the socket strip to be tested and the second input end of the line sequence polarity detection unit, and the two ends of the sixth high-voltage relay are respectively connected to the ground wire of the second end of the socket strip to be tested and the third input end of the line sequence polarity detection unit.

5. The socket detection device according to claim 4, characterized in that: The line sequence polarity detection unit includes a first optocoupler detection circuit, a second optocoupler detection circuit and a third optocoupler detection circuit; The input end of the first optical coupler detection circuit is the first input end of the line sequence polarity detection unit, and the output end of the first optical coupler detection circuit is connected to the control unit; The input end of the second optical coupler detection circuit is the second input end of the line sequence polarity detection unit, and the output end of the second optical coupler detection circuit is connected to the control unit; The input end of the third optocoupler detection circuit is the third input end of the line sequence polarity detection unit, and the output end of the third optocoupler detection circuit is connected to the control unit.

6. The socket detection device according to claim 2, characterized in that: The withstand voltage insulation test unit includes a withstand voltage insulation tester, and the withstand voltage detection switch includes a seventh high-voltage relay and an eighth high-voltage relay; the high-voltage output end of the withstand voltage insulation tester is respectively connected to the first end of the seventh high-voltage relay and the first end of the eighth high-voltage relay, the second end of the seventh high-voltage relay is connected to the live wire of the first end of the socket strip to be tested, the second end of the eighth high-voltage relay is connected to the neutral wire of the first end of the socket strip to be tested, and the loop ground wire of the withstand voltage insulation tester is connected to the ground wire of the first end of the socket strip to be tested.

7. The socket detection device according to claim 3, characterized in that: The grounding resistance test unit includes a grounding resistance tester, a first test end of the grounding resistance tester is connected to the ground wire of the first end of the socket strip to be tested, and a second test end of the grounding resistance tester is connected to the ground wire of the second end of the socket strip to be tested.

8. The socket detection device according to claim 1, 2, 3, 5, 6 or 7, characterized in that: The first end of the socket strip to be tested is the plug interface of the socket strip to be tested, and the second end of the socket strip to be tested is the socket interface of the socket strip to be tested; or, The first end of the power strip to be tested is the socket interface of the power strip to be tested, and the second end of the power strip to be tested is the plug interface of the power strip to be tested.

9. The socket detection device according to any one of claims 1 to 3, characterized in that: The control unit includes an MCU.

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