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CN-121978387-A - Electricity testing device and electricity testing method

CN121978387ACN 121978387 ACN121978387 ACN 121978387ACN-121978387-A

Abstract

The invention relates to a power measuring device and a power measuring method, and particularly discloses a power measuring device with a charging interface multiplexing function. The electricity measuring device comprises a detection circuit, a detection probe for contacting an object to be measured and a charging interface. The charging interface is provided with a grounding conductive part which is used as a grounding connection point of the charging interface and is electrically connected to a grounding loop node of the detection circuit so as to serve as a grounding pole piece for human body touch during electricity measurement. According to the invention, the grounding conductive part of the charging interface is multiplexed into the electricity-measuring grounding pole piece, and an independent metal grounding piece is not required to be additionally arranged on the shell, so that the product structure is simplified, the integration level is improved, and the function expansion of the charging interface is realized.

Inventors

  • LIU LEI

Assignees

  • 刘磊

Dates

Publication Date
20260505
Application Date
20260303

Claims (10)

  1. 1. An electrical measurement device, comprising: A detection circuit; The detection probe is used for contacting an object to be detected to acquire an electric signal; the charging interface is provided with a grounding conductive part; the grounding conductive part is electrically connected to a grounding loop node of the detection circuit and is used as a grounding pole piece for human body touch when the electricity measuring device measures electricity.
  2. 2. The electrical testing device of claim 1, wherein the charging interface further comprises a ground pin, the ground conductive portion is a metal housing of the charging interface, the metal housing is electrically connected to the ground return node, and the ground pin is electrically connected to a charging management circuit of the electrical testing device.
  3. 3. The electrical testing device of claim 1, wherein the charging interface further comprises a ground pin, the ground conductive portion being the ground pin, the ground pin being electrically connected to the ground return node, the metal housing of the charging interface being electrically connected to the charge management circuit of the electrical testing device.
  4. 4. The electrical testing device of claim 1, further comprising a switching unit, wherein the ground conductive portion is selectively electrically connected to the ground return node or a charge management circuit of the electrical testing device through the switching unit.
  5. 5. The electrical measurement device of claim 4, further comprising a voltage detection circuit for monitoring a power pin voltage of the charging interface; and when the voltage detection circuit detects that the voltage of the power pin meets a preset charging condition, controlling the switching unit to connect the grounding conducting part to the charging management circuit, otherwise, controlling the switching unit to connect the grounding conducting part to the grounding loop node.
  6. 6. The electrical testing device of claim 5, wherein the predetermined charging condition comprises the power pin voltage being higher than a predetermined voltage value for more than a predetermined time.
  7. 7. The electrical measurement device of any one of claims 1 to 6, wherein the detection probe is a conductive magnet or a metallic probe.
  8. 8. The device according to any one of claims 1 to 6, wherein the device comprises a housing, a battery and a main control board, the battery and the detection circuit are disposed on the main control board and are accommodated in the housing, and the charging interface is exposed to the housing.
  9. 9. The electricity measuring method is characterized by comprising the following steps of: providing an electrical measurement device according to any one of claims 1 to 8; When the electricity measuring device is not charged, the grounding conducting part of the charging interface is electrically connected to a grounding loop node of the detection circuit; the electric measuring device is held by hand, fingers are contacted with the grounding conductive part of the charging interface, and meanwhile, the detecting probe is contacted with a part to be detected, so that electric detection is performed.
  10. 10. The electricity measuring method is characterized by comprising the following steps of: providing an electrical measurement device according to any one of claims 4 to 6; monitoring the voltage of a power supply pin of the charging interface; when the voltage of the power supply pin meets a preset charging condition, the grounding conducting part is connected to the charging management circuit through the switching unit, so that the electricity measuring device is in a charging mode; When the voltage of the power pin does not meet the preset charging condition, the grounding conductive part is connected to the grounding loop node through the switching unit, so that the electricity measuring device is in an electricity measuring mode, and the grounding conductive part is used as a grounding pole piece for human touching.

Description

Electricity testing device and electricity testing method Technical Field The invention relates to the technical field of electric detection tools, in particular to an electric measurement device and an electric measurement method. Background Conventional test pens, such as neon-bubble type or electronic test pens, are generally provided with a metal tail cap at the tail thereof as a grounding electrode plate for human body touch to form a detection loop. With the development of technology, rechargeable electricity measuring devices are becoming popular, and charging interfaces such as USB interfaces are provided thereon. However, in the existing design, the charging interface and the grounding electrode plate required for power measurement are two independent components. The charging interface is specially used for charging an internal battery, and the grounding electrode plate is specially used for hand touch during electricity measurement. The design of this kind of function separation leads to having to set up two openings on the product shell, also needs to be wired for these two parts respectively in the inside, has increased complexity and manufacturing cost of structure, is unfavorable for miniaturization and the integration of product. Disclosure of Invention The invention aims to solve the problems in the prior art, and provides a power measuring device and a power measuring method which are more compact in structure and higher in integration level, so that functions of a charging interface are expanded, and the function of a power measuring grounding electrode plate is born at the same time. The invention provides an electricity measuring device which comprises a detection circuit, a detection probe and a charging interface, wherein the detection probe is used for contacting an object to be measured to acquire an electric signal, the charging interface is provided with a grounding conductive part, and the grounding conductive part is electrically connected to a grounding loop node of the detection circuit to serve as a grounding pole piece for human touch when the electricity measuring device is used for measuring electricity. In one embodiment, the charging interface further comprises a grounding pin, the grounding conductive part is a metal shell of the charging interface, the metal shell is electrically connected to the grounding loop node, and the grounding pin is electrically connected to a charging management circuit of the electricity measuring device. In one embodiment, the charging interface further comprises a grounding pin, the grounding conductive part is the grounding pin, the grounding pin is electrically connected to the grounding loop node, and the metal shell of the charging interface is electrically connected to the charging management circuit of the electricity measuring device. In one embodiment, the electricity measuring device further includes a switching unit, and the grounding conductive portion is selectively and electrically connected to the ground loop node or the charging management circuit of the electricity measuring device through the switching unit. In one embodiment, the electricity measuring device further comprises a voltage detecting circuit for monitoring the voltage of a power pin of the charging interface, when the voltage detecting circuit detects that the voltage of the power pin meets a preset charging condition, the switching unit is controlled to connect the grounding conducting part to the charging management circuit, and otherwise, the switching unit is controlled to connect the grounding conducting part to the grounding loop node. In one embodiment, the predetermined charging condition includes the power pin voltage being higher than a predetermined voltage value for more than a predetermined time. In one embodiment, the detection probe is a conductive magnet or a metal probe. In one embodiment, the electricity measuring device comprises a shell, a battery and a main control board, wherein the battery and the detection circuit are arranged on the main control board and are contained in the shell, and the charging interface is exposed out of the shell. In a second aspect, the present invention provides a power measurement method, including providing a power measurement device, when the power measurement device is not charged, electrically connecting a ground conductive portion of the charging interface to a ground loop node of the detection circuit, and holding the power measurement device and making a finger contact the ground conductive portion of the charging interface, and simultaneously making the detection probe contact a part to be detected for electrical detection. The invention provides another electricity measuring method, which comprises the following steps of providing an electricity measuring device comprising a switching unit, monitoring the voltage of a power supply pin of a charging interface, connecting a grounding conducting part to