Electric socket grounding detection device and detection method

Abstract

The invention relates to an electric socket grounding detection device which is arranged on a control circuit board of a product, the control circuit board is arranged close to a metal piece, making contact with a metal shell, on the product, and the electric socket grounding detection device comprises a capacitive trigger key arranged on the control circuit board; the insulating plate is arranged between the capacitive trigger key and the metal piece in a contact manner; and the capacitance detection circuit is arranged on the control circuit board in an electric signal connection manner and is in electric signal connection with the capacitance type trigger key. The invention further relates to an electric socket grounding detection method, and in the product using process, the capacitance detection circuit detects the capacitance value C of the capacitive trigger key; c is compared with a capacitance threshold C0; and determining the grounding state of the electric socket of the product according to the comparison result of C and C0. According to the grounding detection device and method for the electric socket, the grounding condition of the electric socket is monitored in real time in the use process of the product based on the working characteristics of the capacitive trigger key, the poor grounding condition of the electric socket in the use process of the product is found in time, and the electricity utilization safety is ensured.

Description

Technical Field

[0001] The invention relates to a grounding detection device for an electric socket and also to a detection method for the grounding detection device for the electric socket. Background Art

[0002] Whether the product's power socket is grounded is related to power safety. If the socket is poorly grounded, there will be great safety hazards, especially when the socket is well grounded at the beginning of use, but poorly grounded during subsequent use, which is difficult for users to find. At present, the detection of whether the product's power socket is grounded is only carried out during the installation stage, using additional detection devices for detection. It is impossible to continuously monitor whether the product's power socket is grounded during the use of the product, which poses a safety hazard. Summary of the invention

[0003] The first technical problem to be solved by the present invention is to provide an electrical socket grounding detection device capable of continuously detecting the grounding status of the electrical socket in view of the above-mentioned prior art.

[0004] The second technical problem to be solved by the present invention is to provide a detection method for the above-mentioned electrical socket grounding detection device in view of the above-mentioned prior art to ensure the safety of product use.

[0005] The technical solution adopted by the present invention to solve the above-mentioned first technical problem is: an electrical socket grounding detection device is arranged on a control circuit board of a product, and the control circuit board is arranged close to a metal part on the product that contacts the metal shell, and is characterized in that: it includes:

[0006] A capacitive trigger button is provided on the control circuit board;

[0007] An insulating plate, contactingly arranged between the capacitive trigger button and the metal part;

[0008] The capacitance detection circuit is electrically signal connectedly arranged on the control circuit board and electrically signal connected to the capacitance trigger button.

[0009] Optionally, the insulating plate is a glass plate or a plastic plate.

[0010] Preferably, the metal part is a metal panel of the product.

[0011] In order to better achieve a stable contact relationship between the insulating plate, the capacitive trigger button and the metal piece, the capacitive trigger button includes an elastic piece with a tendency to be pressed toward the metal piece.

[0012] In order to conveniently remind the product of the poor grounding of the electrical socket, an alarm connected to the electrical signal of the control circuit board is also included.

[0013] The technical solution adopted by the present invention to solve the above second technical problem is: a method for detecting grounding of an electric socket, characterized in that: the above-mentioned electric socket grounding detection device is adopted;

[0014] During the use of the product, the capacitance detection circuit detects the capacitance value C of the capacitive trigger button;

[0015] Compare C with the capacitance threshold C0 when the electrical socket is grounded;

[0016] The grounding status of the product's electrical socket is determined based on the comparison result of C and C0.

[0017] Preferably, C is compared with a capacitance threshold C0 when the electrical socket is in a grounded state. If C<C0, it is determined that the electrical socket of the product is poorly grounded; otherwise, it is determined that the electrical socket of the product is well grounded.

[0018] In order to effectively remind users to promptly deal with the problem of poor grounding of the product's electrical socket and ensure the safety of electricity use of the product, when it is determined that the product's electrical socket is poorly grounded, the control circuit board controls a warning reminder.

[0019] Compared with the prior art, the advantages of the present invention are: the electric socket grounding detection device in the present invention, based on the working characteristics of the capacitive trigger button, is applied to the detection of the grounding of the electric socket. Through a simple structure, it effectively solves the real-time monitoring of the grounding condition of the electric socket during the use of the product, and can more promptly discover the poor grounding of the electric socket during the use of the product, thereby ensuring the safety of users' electricity use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the structure of the electrical socket grounding detection device in an embodiment of the present invention.

[0021] Figure 2 Flow chart of a method for detecting grounding of an electrical socket in an embodiment of the present invention. DETAILED DESCRIPTION

[0022] The present invention is further described in detail below with reference to the accompanying drawings.

[0023] The electrical socket grounding detection device in this embodiment is used to monitor the grounding condition of the electrical socket connected to the product in real time. The power cord of the electrical product is connected to the electrical socket to realize power supply. There is a ground wire in the electrical socket, and the wire in the power cord connected to the metal shell of the electrical product is connected to the ground wire, so that the electrical product is grounded and the electrical safety of the electrical product is ensured.

[0024] When installing electrical products, the electrical socket may be tested for grounding based on safety considerations. However, after the electrical product is connected to the socket, the electrical socket may be poorly grounded during use. The electrical socket grounding detection device in this embodiment can detect the grounding condition of the electrical socket in real time, and then promptly remind the user when the electrical socket is poorly grounded, so that the electrical socket can be maintained in time and electricity safety is ensured.

[0025] A control circuit board 1 is usually provided in an electrical product, and there are some metal parts 2, such as a metal panel, that are in contact with or connected to the metal shell near the control circuit board 1. The metal parts 2 can be connected to the ground wire on the electrical socket through the metal shell to achieve grounding.

[0026] like Figure 1 As shown, the electrical socket grounding detection device in this embodiment is arranged on the control circuit board 1 of the product, and the control circuit board 1 is arranged close to the metal part 2 on the product that contacts the metal shell. The electrical socket grounding detection device includes a capacitive trigger button 3, an insulating plate 4, and a capacitive detection circuit.

[0027] The capacitive trigger button 3 is arranged on the control circuit board 1, and the insulating plate 4 is arranged in contact between the capacitive trigger button 3 and the metal member 2. In order to better achieve a stable contact relationship between the insulating plate 4 and the capacitive trigger button 3 and the metal member 2, the capacitive trigger button 3 includes an elastic member with a tendency to be pressed toward the metal member 2. When the metal member 2 is grounded or ungrounded, that is, when the electrical socket is well grounded or poorly grounded, the capacitance value on the capacitive trigger button 3 will change, which is similar to the change state when a human hand touches the capacitive trigger button 3 and does not touch the capacitive trigger button 3.

[0028] The capacitance detection circuit is electrically signal-connectedly arranged on the control circuit board 1 and electrically signal-connected to the capacitive trigger button 3. The capacitance detection circuit can detect the capacitance change of the capacitive trigger button 3, and then determine the grounding state of the electrical socket according to the capacitance change.

[0029] The insulating plate 4 in this embodiment can be a glass plate or a plastic plate. The metal member 2 can be a metal panel of a product, such as a metal panel near a display screen of the product.

[0030] In order to conveniently remind the product of poor grounding of the electrical socket, an alarm connected to the electrical signal of the control circuit board 1 is also included. The alarm can select a specific alarm product according to needs, such as a sound alarm and / or a light alarm.

[0031] like Figure 2As shown, the aforementioned electrical socket grounding detection device can implement an electrical socket grounding detection method, including the following steps: during the use of the product, the capacitance detection circuit detects the capacitance value C of the capacitive trigger button 3; compares C with the capacitance threshold value C0 of the electrical socket grounding state; and determines the electrical socket grounding state of the product according to the comparison result of C and C0. Specifically, C is compared with the capacitance threshold value C0 of the electrical socket grounding state. If C < C0, it is determined that the electrical socket of the product is poorly grounded, otherwise, it is determined that the electrical socket of the product is well grounded.

[0032] In order to effectively remind users to deal with the problem of poor grounding of the product's electrical socket in time and ensure the safety of electricity use of the product, when it is determined that the product's electrical socket is poorly grounded, the control circuit board 1 controls to issue a warning reminder, so that users can promptly discover the poor grounding of the electrical socket and repair it in time to ensure the safety of electricity use.

[0033] The electric socket grounding detection device and method in the present invention are based on the working characteristics of the capacitive trigger button 3 and are applied to the detection of the grounding of the electric socket. Through a simple structure, the real-time monitoring of the grounding condition of the electric socket during the use of the product is effectively solved, thereby being able to more promptly discover the poor grounding of the electric socket during the use of the product, thereby ensuring the safety of users' electricity use.

Claims

1. An electrical socket grounding detection device, arranged on a control circuit board (1) of a product, wherein the control circuit board (1) is arranged close to a metal part (2) on the product that contacts a metal housing, and characterized in that: include A capacitive trigger button (3) is arranged on the control circuit board (1); An insulating plate (4) is arranged in contact between the capacitive trigger button (3) and the metal member (2); A capacitance detection circuit is electrically signal-connectedly arranged on a control circuit board (1) and electrically signal-connected to a capacitance trigger button (3).

2. The electrical socket grounding detection device according to claim 1, characterized in that: The insulating plate (4) is a glass plate or a plastic plate.

3. The electrical socket grounding detection device according to claim 1, characterized in that: The metal part (2) is a metal panel of the product.

4. The electrical socket grounding detection device according to any one of claims 1 to 3, characterized in that: The capacitive trigger button (3) comprises an elastic member having a tendency to be pressed toward the metal member (2).

5. The electrical socket grounding detection device according to any one of claims 1 to 3, characterized in that: It also includes a warning device which is electrically connected to the control circuit board (1).

6. A method for detecting grounding of an electrical socket, characterized in that: An electrical socket grounding detection device as claimed in any one of claims 1 to 5; During use of the product, the capacitance detection circuit detects the capacitance value C of the capacitive trigger button (3); Compare C with the capacitance threshold C0 when the electrical socket is grounded; The grounding status of the product's electrical socket is determined based on the comparison result of C and C0.

7. The electrical socket grounding detection method according to claim 6, characterized in that: Compare C with the capacitance threshold C0 when the electrical socket is in a grounded state. If C<C0, it is determined that the electrical socket of the product is poorly grounded; otherwise, it is determined that the electrical socket of the product is well grounded.

8. The method for detecting grounding of an electrical socket according to claim 6, characterized in that: When it is determined that the electrical socket of the product is poorly grounded, the control circuit board (1) controls to issue a warning.

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