Alternating current test pencil with clamp meter function

Abstract

The utility model discloses an alternating-current test pencil with a clamp meter function, which comprises an insulating pencil body, an alternating-current voltage detection module, an alternating-current detection module and a controller, the alternating-current voltage detection module, the alternating-current detection module and the controller are matched in the insulating pencil body, and the alternating-current voltage detection module and the alternating-current detection module are both electrically connected with the controller. A metal probe and a clamp head are arranged at the end part of the insulating pen body, a display screen is arranged on the side wall of the insulating pen body, and the metal probe is configured to transmit a detected signal to a controller through an alternating-current voltage detection module so as to calculate an alternating-current voltage value of a detected circuit and automatically display the alternating-current voltage value on the display screen; and the clamp head is configured to transmit a detected signal to the controller through the alternating current detection module so as to calculate an alternating current value of the detected circuit, and the alternating current value is automatically displayed on the display screen. Therefore, according to the alternating-current test pencil, the alternating-current voltage and the alternating-current current of the tested circuit can be measured only by using one test pencil, so that a plurality of tools are not needed, and the working efficiency is also improved.

Description

Technical Field

[0001] The utility model relates to the technical field of alternating current measurement, in particular to an alternating current tester with a clamp meter function. Background Art

[0002] During electrical maintenance and installation work, it's often necessary to measure AC voltage and current to ensure the safe use of electrical equipment. To measure the AC voltage of a circuit under test, the most commonly used tool on the market is a voltage tester. However, existing voltage testers can only measure the AC voltage of the circuit under test, not the AC current. Therefore, when measuring the AC current of the circuit under test, a clamp ammeter must be used. This not only increases the burden of carrying tools but also reduces work efficiency. Utility Model Content

[0003] In response to the shortcomings of the existing technology, the utility model provides an AC electric test pen with a clamp meter function. The metal probe in the AC electric test pen with a clamp meter function is configured to transmit the detected signal to the controller through the AC voltage detection module to calculate the AC voltage value of the measured circuit, and automatically display it on the display screen; the clamp head in the AC electric test pen with a clamp meter function is configured to transmit the detected signal to the controller through the AC current detection module to calculate the AC current value of the measured circuit, and automatically display it on the display screen. In this way, it can be seen that only one electric test pen is needed to measure the AC voltage and AC current of the measured circuit, which not only eliminates the need to carry multiple tools but also improves work efficiency.

[0004] To achieve the above-mentioned purpose, the present invention is realized through the following technical solutions:

[0005] An AC electric test pen with a clamp meter function comprises an insulating pen body, an AC voltage detection module, an AC current detection module and a controller adapted to be inside the insulating pen body, wherein the AC voltage detection module and the AC current detection module are both electrically connected to the controller; a metal probe and a clamp head are provided on the end of the insulating pen body, and a display screen is provided on the side wall; the metal probe is configured to transmit the detected signal to the controller via the AC voltage detection module to calculate the AC voltage value of the measured circuit and automatically display it on the display screen; the clamp head is configured to transmit the detected signal to the controller via the AC current detection module to calculate the AC current value of the measured circuit and automatically display it on the display screen.

[0006] Furthermore, a metal probe is provided on one end of the insulating pen body, and a clamp head is provided on the other end.

[0007] Furthermore, the clamp head and the metal probe are arranged on the same end portion of the insulating pen body.

[0008] Furthermore, the clamp head is a Rogowski current sensor type clamp head.

[0009] Furthermore, the pliers head is a fork-shaped pliers head.

[0010] Furthermore, an opening for clamping a wire is provided on the end of the fork-shaped clamp head.

[0011] Furthermore, a switch button, a conductive rubber touch button and a display screen which can be electrically connected to the controller are provided on the side wall of the insulating pen body.

[0012] Furthermore, the conductive rubber touch button is used to connect to the ground copper foil inside the insulating pen body.

[0013] Furthermore, a buzzer and an LED light which can be electrically connected to the controller are also provided on the side wall of the insulating pen body.

[0014] The above technical solution has the following advantages or beneficial effects:

[0015] In the AC test pen with clamp meter function described in the present invention, the metal probe is configured to transmit the detected signal through the AC voltage detection module to the controller to calculate the AC voltage value of the tested circuit and automatically display it on the display screen; the clamp head is configured to transmit the detected signal through the AC current detection module to the controller to calculate the AC current value of the tested circuit and automatically display it on the display screen. In this way, only one test pen is needed to measure the AC voltage and AC current of the tested circuit, eliminating the need for multiple tools and improving work efficiency. This solves the problem that existing test pen cannot measure both AC voltage and AC current. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a circuit diagram of an AC tester with a clamp meter function according to a first embodiment of the present invention.

[0017] Figure 2 This is a schematic diagram of the external structure of an AC voltage tester with a clamp meter function according to the first embodiment of the present invention.

[0018] Figure 3 This is a schematic diagram of the external structure of an AC voltage tester with a clamp meter function according to the second embodiment of the present invention.

[0019] Description of labels:

[0020] 1. Insulated pen body, 2. Metal probe, 3. Clamp head, 4. On / off switch, 5. Conductive rubber touch button, 6. Display screen, 31. Opening. DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0023] Example 1

[0024] Please refer to the attached Figure 1 and attached Figure 2 An embodiment of the present invention provides an AC electric test pen with a clamp meter function, comprising an insulating pen body 1, an AC voltage detection module, an AC current detection module and a controller adapted to be inside the insulating pen body 1, and the AC voltage detection module and the AC current detection module are both electrically connected to the controller; a metal probe 2 and a clamp head 3 are provided on the end of the insulating pen body 1, and a display screen 6 is provided on the side wall, the metal probe 2 is configured to transmit the detected signal to the controller through the AC voltage detection module to calculate the AC voltage value of the measured circuit and automatically display it on the display screen 6; the clamp head 3 is configured to transmit the detected signal to the controller through the AC current detection module to calculate the AC current value of the measured circuit and automatically display it on the display screen 6. It can be understood that in this embodiment, the metal probe 2 is configured to transmit the detected signal to the controller through the AC voltage detection module to calculate the AC voltage value of the circuit under test, and automatically display it on the display screen; the clamp head 3 is configured to transmit the detected signal to the controller through the AC current detection module to calculate the AC current value of the circuit under test, and automatically display it on the display screen. In this way, it can be seen that only one test pen is needed to measure the AC voltage and AC current of the circuit under test, which not only eliminates the need to carry multiple tools but also improves work efficiency.

[0025] Please refer to the attached Figure 1 and attached Figure 2 In one preferred embodiment, a metal probe 2 is provided on one end of the insulating pen body 1, and a clamp head 3 is provided on the other end to make the structure symmetrical and beautiful.

[0026] Please refer to the attached Figure 1 and attached Figure 2In one preferred embodiment, the clamp head 3 is a Rogowski current sensor type clamp head. However, those skilled in the art should understand that in other implementations, the clamp head 3 may also adopt other measurement methods and is not limited to the specific implementation methods disclosed in this embodiment. Preferably, the clamp head 3 is a fork-shaped clamp head. The fork-shaped clamp head makes the current measurement more flexible, and an opening 31 for clamping the wire is provided on the end of the fork-shaped clamp head. The design of the opening 31 can clamp the wire more conveniently. Specifically: The Rogowski coil (i.e., the AC current detection module) is a hollow coil, which measures the AC magnetic field generated around the current flowing through the conductor and converts it into an induced voltage of the hollow coil for measurement. When using a forked clamp to measure the AC current of a conductor, the user can clamp the opening 31 of the forked clamp onto a cable or wire. The forked clamp has an embedded Rogowski coil for sensing the magnetic field generated by the current. When current flows through the conductor being measured, an AC magnetic field is generated around the conductor. When the Rogowski coil senses this magnetic field, it generates an induced voltage proportional to the conductor current. This induced voltage is amplified and processed by the controller MCU, ultimately converted into a current value and automatically displayed on the display screen 6. At this point, the AC tester with clamp meter function of the present invention is in the clamp current measurement mode.

[0027] Please refer to the attached Figure 1 and attached Figure 2 In one preferred embodiment, a switch key 4 and a conductive rubber touch key 5 are provided on the side wall of the insulating pen body 1, which are electrically connected to the controller. It is understood that in this embodiment, whether measuring AC current or AC voltage, the switch key 4 must be turned on before measurement can be performed.

[0028] Please refer to the attached Figure 2 In one preferred embodiment, the conductive rubber touch button 5 is used to connect to the ground copper foil inside the insulating pen body 1. It can be understood that in this embodiment, when measuring the AC voltage value through the metal probe 2, when the metal probe 2 contacts the conductor in the circuit under test and the human body touches the conductive rubber touch button 5, a stable ground loop (i.e., AC voltage detection module) is provided to improve the accuracy of the measurement. It senses the change in the electric field through the capacitive coupling between the circuit under test and the test pen. Since the voltage of AC power continuously changes between positive and negative values, it will generate an electric field. The strength of this electric field changes with the change in voltage. At this time, the controller MCU can calculate and measure the change in voltage through the change in the electric field to obtain the AC voltage value, and then the calculated AC voltage value will be automatically displayed on the display screen 6. At this time, the AC test pen with clamp meter function of the present invention is in the metal probe 2 voltage measurement mode.

[0029] Please refer to the attached Figure 1 and attached Figure 2In one preferred embodiment, a buzzer and an LED light that can be electrically connected to the controller are further provided on the side wall of the insulating pen body 1. By using the buzzer and the LED light, the AC voltage tester of the utility model can realize the sound and light alarm to remind the user.

[0030] Example 2

[0031] Please refer to the attached Figure 3 The difference between this embodiment and the first embodiment is that the clamp head 3 and the metal probe 2 of this embodiment are arranged at the same end of the insulating pen body 1, while the clamp head 3 and the metal probe 2 of the first embodiment are respectively arranged at opposite ends of the insulating pen body 1.

[0032] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate from the spirit and scope of the technical solutions of the embodiments of the present invention. Therefore, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present invention.

Claims

1. An AC voltage tester with clamp meter function, characterized by: The invention comprises an insulating pen body (1), an AC voltage detection module, an AC current detection module and a controller adapted to be inside the insulating pen body (1), wherein the AC voltage detection module and the AC current detection module are both electrically connected to the controller; a metal probe (2) and a clamp head (3) are provided on the end of the insulating pen body (1), and a display screen (6) is provided on the side wall; the metal probe (2) is configured to transmit a detected signal to the controller through the AC voltage detection module to calculate the AC voltage value of the measured circuit and automatically display it on the display screen (6); the clamp head (3) is configured to transmit a detected signal to the controller through the AC current detection module to calculate the AC current value of the measured circuit and automatically display it on the display screen (6).

2. The AC test pencil with clamp meter function according to claim 1, characterized in that: A metal probe (2) is provided on one end of the insulating pen body (1), and a clamp head (3) is provided on the other end.

3. The AC tester with clamp meter function according to claim 1, characterized in that: The clamp head (3) and the metal probe (2) are arranged on the same end of the insulating pen body (1).

4. The AC test pencil with clamp meter function according to claim 1, characterized in that: The clamp head (3) is a Rogowski current sensor type clamp head.

5. The AC test pencil with clamp meter function according to claim 1, characterized in that: The clamp head (3) is a fork-shaped clamp head.

6. The AC test pencil with clamp meter function according to claim 5, characterized in that: An opening (31) for clamping a wire is provided on the end of the fork-shaped clamp head.

7. The AC test pencil with clamp meter function according to claim 1, characterized in that: An on / off key (4) and a conductive rubber touch key (5) that can be electrically connected to a controller are provided on the side wall of the insulating pen body (1).

8. The AC test pencil with clamp meter function according to claim 7, characterized in that: The conductive rubber touch button (5) is used to be connected to the ground copper foil inside the insulating pen body (1).

9. The AC test pencil with clamp meter function according to claim 1, characterized in that: A buzzer and an LED light which can be electrically connected to the controller are also provided on the side wall of the insulating pen body (1).

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