Electromagnetic energy charging hook watch

Abstract

The invention discloses an electromagnetic energy charging hook meter, and the hook meter comprises an electromagnetic induction unit which is electrically connected with a to-be-tested wire; 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] This invention belongs to the technical field of measuring the current of a wire under test, and particularly relates to an electromagnetic energy charging hook meter. Background Technology

[0002] Electricity is now an indispensable energy source, and it can be divided into alternating current (AC) and direct current (DC). DC current is commonly found in many ultra-low voltage and low voltage devices, primarily used in various electronic instruments, electrolysis, electroplating, and DC power drives. Currently, most professionals use multimeters to measure DC current, including sensitive ammeters (G meters), ammeters, voltmeters, bridges, and potential difference meters. With technological advancements, digital electronic multimeters have become the most frequently used measuring tool by most professionals and repair technicians.

[0003] Existing current meters generate an electromagnetic field when current flows through the wire under test. The wire then induces a current through electromagnetic induction, and the current is calculated based on the magnitude of this induced current and the number of turns in the iron core inside the measuring section of the current meter. However, this requires a battery for power; when the battery is depleted, it must be replaced to continue measuring the current of the wire, making it inconvenient to use.

[0004] Therefore, there is an urgent need to design an electromagnetic energy charging hook meter to solve the problems mentioned above. Summary of the Invention

[0005] The purpose of this invention 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 measurement mode according to whether its own power is sufficient.

[0006] To achieve the above objectives, the specific technical solution of the electromagnetic energy charging hook meter of the present invention is as follows, including: An electromagnetic induction unit is electrically connected to the wire under test and generates a corresponding induced current based on changes in the electromagnetic field of the wire under test; 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 low-level measurement and high-level measurement functions; an AC / DC conversion unit is electrically connected to the two-stage file position switching unit and converts the AC voltage of the two-stage file position switching unit into DC voltage; a microprocessor computing unit is electrically connected to the AC / DC conversion unit and receives data from the AC / DC conversion unit and has charging control functions. The system includes an output device and a measurement and control output device, the charging control output device being electrically connected to the automatic switching unit and the measurement and control output device being electrically connected to the two-stage file position switching unit; a rectifier unit, electrically connected to the charging terminal of the automatic switching unit, for rectifying the AC voltage of the automatic switching unit into DC voltage; an energy cache unit, electrically connected to the rectifier unit, for receiving the DC voltage from the rectifier unit, converting it into a fixed voltage, and storing it in the charging unit; and a rechargeable battery, electrically connected to the charging unit, for receiving the fixed voltage from the charging unit and providing power to the microprocessor computing unit through a DC / DC conversion unit. Attached Figure Description

[0007] Figure 1 This is a block diagram of the electromagnetic energy charging hook circuit of the present invention; Figure 2 This is a circuit diagram (I) of the present invention; Figure 3 This is a circuit diagram (II) of the present invention; Figure 4 This is a circuit diagram (III) of the present invention; Figure 5 This is a circuit diagram (four) of the present invention; Figure 6 This is a circuit diagram (V) of the present invention; Figure 7 This is a circuit diagram (six) of the present invention; Figure 8 This is a circuit diagram (VII) of the present invention; Figure 9 This is a circuit diagram (eight) of the present invention; Explanation of markings in the diagram: Electrical wire under test 1 Magnetic induction unit 2 Automatic switching unit 3 Measurement end 30 Charging end 31 Two-stage file position switching unit 4 Low gear measurement 40 High-level measurement 41 First overvoltage protection unit 42 AC / DC conversion unit 43 Microprocessor computing unit 5 Charging control output device 50 Measurement and control output device 51 Wireless transmission unit 52 First external electronic device 520 Wired transmission unit 53 Second external electronic device 530 Rectifier Unit 6 Second overvoltage protection unit 60 Energy Cache Unit 7 Charging unit 70 Charging protection unit 71 72 rechargeable batteries DC / DC conversion unit 73 Detailed Implementation

[0008] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0009] Those skilled in the art will understand that although some embodiments herein include certain features included in other embodiments but not others, combinations of features from different embodiments are intended to be within the scope of the invention and form different embodiments. For example, in the claims, any of the claimed embodiments can be used in any combination.

[0010] The following reference Figures 1 to 9 The electromagnetic energy charging hook meter of the present invention is used to measure the current of a wire 1 under test, comprising: The electromagnetic induction unit 2 is used to sense the magnitude of the electromagnetic field of the wire 1 under test and generate a corresponding induced current according to the change in the magnitude of the electromagnetic field.

[0011] The automatic switching unit 3 is electrically connected to the electromagnetic induction unit 2 and has a measuring end 30 and a charging end 31. To avoid affecting the accuracy of the measurement, the electromagnetic energy charging meter must have sufficient power when measuring the induced current of the wire 1 under test. Therefore, when the electromagnetic energy charging meter has sufficient power, the automatic switching unit 3 automatically switches to the measuring end 30 to form an electrical connection and measure the induced current of the wire 1 under test. When the electromagnetic energy charging meter has insufficient power, the automatic switching unit 3 automatically switches to the charging end 31 to form an electrical connection and charge the wire 1.

[0012] The two-stage file position switching unit 4 is electrically connected to the measuring terminal 30 of the automatic switching unit 3 and has a low-range measurement 40 and a high-range measurement 41. Specifically, the electromagnetic energy charging hook meter has a default load voltage (e.g., 3 volts). When the load voltage of the wire 1 under test is less than 3 volts, the two-stage file position switching unit 4 switches to the low-range measurement 40; when the load voltage of the wire 1 under test is greater than 3 volts, the two-stage file position switching unit 4 switches to the high-range measurement 41.

[0013] 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 outputs AC voltage normally. 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 out by excessive AC voltage.

[0014] 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 DC voltage.

[0015] The microprocessor computing unit 5 is electrically connected to the AC / DC conversion unit 43. It receives the DC voltage from the AC / DC conversion unit 43, calculates the induced current value based on its own conduction resistance, and then further calculates the current value corresponding to the electromagnetic field (i.e., the current flowing through the wire 1 under test). In this embodiment, the microprocessor computing unit 5 further includes 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 computing unit 5 is electrically connected to the wireless transmission unit 52 and the wired transmission unit 53, respectively. The wireless transmission unit 52 receives the current magnitude of the wire 1 under test calculated by the microprocessor computing unit 5, converts the current magnitude into a wireless signal according to a wireless communication protocol, and transmits it to the first external electronic device 520 (e.g., a laptop, mobile phone, or other communication device). In this embodiment, the wireless communication protocol can be ZigBee or Bluetooth Low Energy (BLE). The wired transmission unit 53 receives the current magnitude of the wire 1 under test calculated by the microprocessor computing unit 5 and transmits it as a wired signal to the second external electronic device 530 (e.g., a USB storage device).

[0016] 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 DC voltage.

[0017] The second overvoltage protection unit 60 is electrically connected to the rectifier unit 6 to protect the rectifier unit 6 from being burned out by excessive AC voltage.

[0018] The energy cache unit 7 is electrically connected to the second overvoltage protection unit 60, which receives the DC voltage from the rectifier unit 6 and converts it into a fixed voltage for storage 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 from the charging unit 70 and provide power to the microprocessor unit 5 through the DC / DC conversion unit 73.

[0019] In use, the automatic switching unit 3 of this invention automatically switches to measurement mode or charging mode according to the power level of the electromagnetic energy charging hook meter. When the electromagnetic energy charging hook meter has sufficient power, the automatic switching unit 3 switches to measurement mode and performs measurement operations through the measurement terminal 30 electrically connected to the two-stage file position switching unit 4 and the measurement control output device 51 of the microprocessor computing unit 5 to measure the current of the wire 1 under test. In this embodiment, the two-stage file position switching unit 4 selects the low-level measurement 40 and the high-level measurement 41 according to the load voltage of the wire 1 under test. When the power is insufficient, the automatic switching unit 3 switches to charging mode and performs charging operations through the charging terminal 30 electrically rectified unit 6 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 wire 1 under test into DC voltage, and then the energy cache unit 7 converts the DC voltage into a fixed voltage and stores it in the charging unit 70. This ensures that the charging unit 70 has sufficient power to supply the microprocessor unit 5, so that the electromagnetic energy charging hook meter does not need to frequently replace the battery when measuring the current of the wire 1 under test, thereby reducing the generation of waste batteries and achieving the effect of environmental protection.

[0020] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. An electromagnetic energy charging hook meter, used to sense the induced current in a wire under test, characterized in that, It includes an electromagnetic induction unit, which is electrically connected to the wire under test and generates a corresponding induced current according to the change of the electromagnetic field of the wire under test. 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 measurement terminal of the automatic switching unit and has low-level measurement and high-level measurement functions. An AC / DC conversion unit is electrically connected to the two-stage file position switching unit to convert the AC voltage of the two-stage file position switching unit into DC voltage. The microprocessor computing unit is electrically connected to the AC / DC conversion unit, for receiving data from the AC / DC conversion unit, and has 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-stage file position switching unit. A rectifier unit, electrically connected to the charging terminal of the automatic switching unit, is used to rectify the AC voltage of the automatic switching unit into DC voltage. An energy buffer unit, electrically connected to the rectifier unit, is used to receive the DC voltage from 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 to receive a fixed voltage from the charging unit and to supply power to the microprocessor unit through a DC / DC converter.

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 under test. When the electromagnetic energy charging hook meter has insufficient power, the automatic switching unit automatically switches to the charging end to charge the wire.

3. The electromagnetic energy charging hook meter according to claim 1, characterized in that, The electromagnetic charging hook meter has a default load voltage. When the load voltage of the wire under test is less than the load voltage of the electromagnetic charging hook, the two-stage file position switching unit switches to the lower range for measurement. When the load voltage of the wire under test is greater than the load voltage of the electromagnetic charging hook, the two-stage file position switching unit switches to the higher range for measurement.

4. The electromagnetic energy charging hook meter according to claim 1, characterized in that, The rectifier unit and the energy buffer unit are electrically connected to a first overvoltage protection unit to protect the two-stage file bit switching unit from being burned out by excessive AC voltage.

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

6. The electromagnetic energy charging hook meter according to claim 1, characterized in that, The microprocessor computing 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 also electrically connected to a charging protection unit to prevent the charging unit from being overcharged or over-discharged.

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