Electromagnetic energy charging hook watch

Abstract

The utility model discloses an electromagnetic energy charging hook meter, comprising an electromagnetic induction unit electrically connected with a wire to be detected; the automatic switching unit is electrically connected with the electromagnetic induction unit; the two-section file bit switching unit is electrically connected with the measuring end of the automatic switching unit and has a low-gear measurement function and a high-gear measurement function; the alternating current / direct current conversion unit is electrically connected with the two-section file bit switching unit; the micro-processing calculation unit is electrically connected with the alternating current / direct current conversion unit and is provided with a charging control output device and a measurement control output device, the charging control output device is electrically connected to the automatic switching unit, and the measurement control output device is electrically connected to the two-section file bit switching unit; the rectifying unit is electrically connected with the charging end of the automatic switching unit; the energy buffer unit is electrically connected with the rectifying unit; and the rechargeable battery is electrically connected with the charging unit so as to provide power for the micro-processing calculation unit.

Description

Technical Field

[0001] The utility model belongs to the technical field of measuring the current of a wire to be tested, in particular to an electromagnetic energy charging hook meter. Background Art

[0002] Electricity has become an indispensable energy source today, and it can be divided into two types: alternating current (AC) and direct current (DC). DC current is common in many extra-low voltage and low-voltage devices, primarily used in various electronic instruments, electrolysis, electroplating, and DC power transmission applications. Today, businesses often use multimeters to measure DC current. Commonly used are sensitive ammeters (G-meters), ammeters, voltmeters, bridge ammeters, and potentiometers. With technological advancements, digital electronic hook meters have become the most commonly used measuring tools by businesses and repair technicians.

[0003] Existing current hook meters generate an electromagnetic field when current flows through the wire under test. This electromagnetic field then induces a current in the wire under test through electromagnetic induction. The current in the wire under test is then calculated based on the magnitude of the induced current and the number of turns of the iron core within the meter's measuring section. Therefore, current hook meters require a battery for power. When the battery dies, it must be replaced to continue measuring the current in the wire under test, making them inconvenient to use.

[0004] Therefore, it is urgent to design an electromagnetic energy charging hook meter to solve the above-mentioned problems. Utility Model Content

[0005] The purpose of the utility model is to provide an electromagnetic energy charging hook meter, the main purpose of which is to provide an electromagnetic energy charging hook meter that can automatically switch between charging mode and measuring mode according to whether its own power is sufficient.

[0006] To achieve the above objectives, the specific technical solutions of the electromagnetic energy charging hook meter of the present invention are as follows, including:

[0007] An electromagnetic induction unit is electrically connected to the wire to be tested and generates a corresponding induced current according to the change of the electromagnetic field of the wire to be tested; an automatic switching unit is electrically connected to the electromagnetic induction unit and has a measuring end and a charging end; a two-stage file position switching unit is electrically connected to the measuring end of the automatic switching unit and has a low-speed measurement and a high-speed measurement; an AC / DC conversion unit is electrically connected to the two-stage file position switching unit and is used to convert the AC voltage of the two-stage file position switching unit into a DC voltage; a microprocessor calculation unit is electrically connected to the AC / DC conversion unit and is used to receive the AC / DC conversion unit and has a charging control function. An output device and a measurement control output device, the charging control output device is electrically connected to the automatic switching unit, and the measurement control output device is electrically connected to the two-stage file position switching unit; a rectifier unit is electrically connected to the charging end of the automatic switching unit, used to rectify the AC voltage of the automatic switching unit into a DC voltage; an energy cache unit is electrically connected to the rectifier unit, used to receive the DC voltage of the rectifier unit, convert it into a fixed voltage and store it in the charging unit; a rechargeable battery is electrically connected to the charging unit, used to receive the fixed voltage of the charging unit and provide power to the microprocessor computing unit through the DC / DC conversion unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 This is a circuit block diagram of the electromagnetic energy charging hook meter of the present utility model;

[0009] Figure 2 This is the circuit diagram (1) of the utility model;

[0010] Figure 3 This is the circuit diagram (II) of the utility model;

[0011] Figure 4 This is the circuit diagram (3) of the utility model;

[0012] Figure 5 This is the circuit diagram (four) of the utility model;

[0013] Figure 6 This is the circuit diagram (5) of the utility model;

[0014] Figure 7 This is the circuit diagram (six) of the utility model;

[0015] Figure 8 This is the circuit diagram (VII) of the utility model;

[0016] Figure 9 This is the circuit diagram (eight) of the utility model;

[0017] Description of the marks in the figure:

[0018] Electrical wire to be tested 1

[0019] Magnetic induction unit 2

[0020] Automatic switching unit 3

[0021] Measuring end 30

[0022] Charging terminal 31

[0023] Two-stage file position switching unit 4

[0024] Low gear measurement 40

[0025] High-speed measurement 41

[0026] The first overvoltage protection unit 42

[0027] AC / DC conversion unit 43

[0028] Microprocessor computing unit 5

[0029] Charging control output device 50

[0030] Measurement control output device 51

[0031] Wireless transmission unit 52

[0032] First external electronic device 520

[0033] Wired transmission unit 53

[0034] Second external electronic device 530

[0035] Rectifier unit 6

[0036] The second overvoltage protection unit 60

[0037] Energy cache unit 7

[0038] Charging unit 70

[0039] Charging protection unit 71

[0040] Rechargeable battery 72

[0041] DC / DC conversion unit 73 DETAILED DESCRIPTION

[0042] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0043] Those skilled in the art will appreciate that, although some embodiments herein include certain features included in other embodiments but not other features, the combination of features from different embodiments is intended to be within the scope of the present invention and to form different embodiments. For example, in the claims, any one of the claimed embodiments may be used in any combination.

[0044] Refer to the following Figures 1 to 9 The electromagnetic energy charging hook meter of the present invention is used to measure the current of the wire 1 to be tested, and includes:

[0045] The electromagnetic induction unit 2 is used to sense the magnitude of the electromagnetic field of the wire to be tested 1 and generate a corresponding induced current according to the change in the magnitude of the electromagnetic field.

[0046] Automatic switching unit 3 is electrically connected to electromagnetic induction unit 2 and has a measuring terminal 30 and a charging terminal 31. To avoid affecting measurement accuracy, the electromagnetic energy charging hook meter must have sufficient power when measuring the induced current of the test wire 1. Therefore, when the electromagnetic energy charging hook meter has sufficient power, the automatic switching unit 3 automatically switches to the measuring terminal 30 to establish an electrical connection and measure the induced current of the test wire 1. When the electromagnetic energy charging hook meter has insufficient power, the automatic switching unit 3 automatically switches to the charging terminal 31 to establish an electrical connection and charge the device.

[0047] The two-stage position switching unit 4 is electrically connected to the measuring terminal 30 of the automatic switching unit 3 and has a low-range measurement position 40 and a high-range measurement position 41. Specifically, the electromagnetic energy charging hook meter has a default load voltage (e.g., 3 volts). When the load voltage of the test wire 1 is less than 3 volts, the two-stage position switching unit 4 switches to the low-range measurement position 40. When the load voltage of the test wire 1 is greater than 3 volts, the two-stage position switching unit 4 switches to the high-range measurement position 41.

[0048] The first overvoltage protection unit 42 is electrically connected to the two-stage file position switching unit 4. When the AC voltage of the two-stage file position switching unit 4 is not greater than the critical voltage value, the first overvoltage protection unit 42 normally outputs the AC voltage. When the AC voltage of the two-stage file position switching unit 4 is greater than the critical voltage value, the first overvoltage protection unit 42 discharges to protect the two-stage file position switching unit 4 from being burned by the excessive AC voltage.

[0049] The AC / DC conversion unit 43 is electrically connected to the overvoltage protection unit 42 and is used to convert the AC voltage of the two-stage file position switching unit 4 into a DC voltage.

[0050] The microprocessor 5 is electrically connected to the AC / DC converter 43 and is configured to receive the DC voltage from the AC / DC converter 43 and calculate the induced current value based on its own conductive resistance. It then further calculates the current value corresponding to the electromagnetic field (i.e., the current flowing through the test wire 1). In this embodiment, the microprocessor 5 further comprises a charging control output device 50 and a measurement control output device 51. The charging control output device 50 is electrically connected to the automatic switching unit 3, and the measurement control output device 51 is electrically connected to the two-stage file position switching unit 4. Furthermore, the microprocessor 5 is electrically connected to a wireless transmission unit 52 and a wired transmission unit 53. The wireless transmission unit 52 receives the current value of the test wire 1 calculated by the microprocessor 5 and converts the current value into a wireless signal according to a wireless communication protocol, which is then transmitted to a first external electronic device 520 (e.g., a laptop, mobile phone, or other communication device). In this embodiment, the wireless communication protocol may be ZigBee or Bluetooth Low Energy (BLE). The wired transmission unit 53 receives the current of the tested wire 1 calculated by the microprocessor calculation unit 5 and transmits it to the second external electronic device 530 (eg, a USB storage device) via a wired signal.

[0051] The rectifier unit 6 is electrically connected to the charging terminal 31 of the automatic switching unit 3 and is used to rectify the AC voltage of the automatic switching unit 3 into a DC voltage.

[0052] The second overvoltage protection unit 60 is electrically connected to the rectifier unit 6 to protect the rectifier unit 6 from being burned by an excessive AC voltage.

[0053] The energy cache unit 7 is electrically connected to the second overvoltage protection unit 60, and is used to receive the DC voltage of the rectifier unit 6 and convert it into a fixed voltage to be stored in the charging unit 70. The charging unit 70 is also electrically connected to the charging protection unit 71 and the rechargeable battery 72. The charging protection unit 71 is used to protect the charging unit 70 from overcharging and over-discharging, so that the charging unit 70 will not be overcharged or over-discharged. The rechargeable battery 72 is used to receive the fixed voltage of the charging unit 70 and provide power to the microprocessor unit 5 through the DC / DC conversion unit 73.

[0054] In operation, the automatic switching unit 3 of this embodiment automatically switches between measurement mode and charging mode based on the charge level of the electromagnetic energy charging hook meter. When the electromagnetic energy charging hook meter has sufficient charge, the automatic switching unit 3 switches to measurement mode and electrically connects the two-stage file position switching unit 4 and the measurement control output device 51 of the microprocessor computing unit 5 via the measurement terminal 30 to perform measurement operations, thereby measuring the current of the test wire 1. In this embodiment, the two-stage file position switching unit 4 selects between the low-level measurement 40 and the high-level measurement 41 for measurement based on the load voltage of the test wire 1. When the charge level is insufficient, the automatic switching unit 3 switches to charging mode and performs charging operations via the electrical rectification unit 6 of the charging terminal 30 and the measurement control output device 50 of the microprocessor computing unit 5. In this embodiment, the rectifier unit 6 rectifies the AC voltage of the test wire 1 into a DC voltage, which is then converted into a fixed voltage by the energy buffer unit 7 and stored in the charging unit 70. This ensures that the charging unit 70 has sufficient power to supply the microprocessor unit 5. This allows the electromagnetic energy charging hook meter to measure the current of the test wire 1 without frequent battery replacement, thereby reducing the generation of waste batteries and achieving environmental protection.

[0055] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. Electromagnetic energy charging hook meter, used to sense the induced current of the wire to be tested, characterized by: The device comprises an electromagnetic induction unit, which is electrically connected to the wire to be tested and generates a corresponding induced current according to the change of the electromagnetic field of the wire to be tested; an automatic switching unit electrically connected to the electromagnetic induction unit and having a measuring end and a charging end; A two-stage file position switching unit is electrically connected to the measuring end of the automatic switching unit and has low-position measurement and high-position measurement; an AC / DC conversion unit electrically connected to the two-stage file position switching unit for converting the AC voltage of the two-stage file position switching unit into a DC voltage; a microprocessor computing unit electrically connected to the AC / DC conversion unit, configured to receive the AC / DC conversion unit and comprising a charging control output device and a measurement control output device, wherein the charging control output device is electrically connected to the automatic switching unit, and the measurement control output device is electrically connected to the two-stage file position switching unit; a rectifier unit electrically connected to the charging terminal of the automatic switching unit and configured to rectify the AC voltage of the automatic switching unit into a DC voltage; an energy buffer unit, electrically connected to the rectifier unit, for receiving the DC voltage from the rectifier unit, converting the DC voltage into a fixed voltage, and storing the fixed voltage in the charging unit; The rechargeable battery is electrically connected to the charging unit, and is used for receiving a fixed voltage from the charging unit and providing power to the microprocessing unit through the DC / DC conversion unit.

2. The electromagnetic energy charging hook meter according to claim 1, characterized in that: When the electromagnetic energy charging hook meter has sufficient power, the automatic switching unit automatically switches to the measuring end to measure the induced current of the wire to be tested. When the electromagnetic energy charging hook meter has insufficient power, the automatic switching unit automatically switches to the charging end to charge.

3. The electromagnetic energy charging hook meter according to claim 1, characterized in that: The electromagnetic energy charging hook meter has a default load voltage. When the load voltage of the wire to be tested is less than the load voltage of the electromagnetic energy charging hook, the two-stage file position switching unit switches to the low-speed measurement. When the load voltage of the wire to be tested is greater than the load voltage of the electromagnetic energy charging hook, the two-stage file position switching unit switches to the high-speed measurement.

4. The electromagnetic energy charging hook meter according to claim 1, characterized in that: A first overvoltage protection unit is electrically connected between the rectifier unit and the energy buffer unit to protect the two-stage file position switching unit from being burned by an excessive AC voltage.

5. The electromagnetic energy charging hook meter according to claim 1, characterized in that: A second overvoltage protection unit is electrically connected between the two-stage file position switching unit and the AC / DC conversion unit to protect the rectifier unit from being burned by an excessive AC voltage.

6. The electromagnetic energy charging hook meter according to claim 1, characterized in that: The microprocessing unit is electrically connected to the wireless transmission unit and the wired transmission unit respectively. The wireless transmission unit is electrically connected to the first external electronic device, and the wired transmission unit is electrically connected to the second external electronic device.

7. The electromagnetic energy charging hook meter according to claim 1, characterized in that: The charging unit is further electrically connected to a charging protection unit to prevent the charging unit from being overcharged or over-discharged.

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