CN109856467B - Human body static electricity measuring device - Google Patents
Human body static electricity measuring device Download PDFInfo
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- CN109856467B CN109856467B CN201910214218.XA CN201910214218A CN109856467B CN 109856467 B CN109856467 B CN 109856467B CN 201910214218 A CN201910214218 A CN 201910214218A CN 109856467 B CN109856467 B CN 109856467B
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Abstract
The invention is suitable for the field of electricity and provides a human body static electricity measuring device. The human body static electricity measuring device comprises a processor, a pressure sensor, an output module and a battery, wherein the pressure sensor, the output module and the battery are respectively and electrically connected with the processor; the human body static measurement device further comprises a first metal static arm fixed on the rotating shaft and a second metal static arm movably connected with the rotating shaft, the rotating shaft is connected with a metal conductor, the pressure sensor is fixed in a rotating area of the second metal static arm, and the rotating shaft is made of a conductive material. The human body static electricity measuring device provided by the embodiment of the invention does not need to be grounded, can be worn on a wrist, can be continuously tested, can measure human body static electricity at any time, and can be used for reminding a worker of releasing static electricity to the greatest extent if the wrist is electrified and outputting a static voltage value through the output module, so that the danger of static electricity in work is reduced to the greatest extent.
Description
Technical Field
The invention belongs to the field of electricity, and particularly relates to a human body static electricity measuring device.
Background
The portable electrostatic voltage measuring device in the prior art mainly measures static electricity in two ways: contact and non-contact. The principle of electrostatic voltage measurement is an inductive voltage division method, whether in contact or non-contact. As shown in FIG. 1, an electrostatic voltage E is generated to the left 0 The region A is the electrostatic voltage region to be tested, and the voltage passes through the capacitor C 0 And capacitor C b After inductive voltage division, at capacitor C b Voltage E measured at both ends b . However, this method must require that the entire system be grounded and that the test be intermittent.
Disclosure of Invention
The invention aims to provide a human body static electricity measuring device, and aims to solve the problems that the whole system is required to be grounded and the test has discontinuity in the portable static electricity voltage measuring equipment in the prior art.
The invention provides a human body static electricity measuring device which comprises a processor, a pressure sensor, an output module and a battery, wherein the pressure sensor, the output module and the battery are respectively and electrically connected with the processor; the human body static measurement device further comprises a first metal static arm fixed on the rotating shaft and a second metal static arm movably connected with the rotating shaft, the rotating shaft is connected with a metal conductor, the pressure sensor is fixed in a rotating area of the second metal static arm, the rotating shaft is made of conductive materials, and charges are transferred among the first metal static arm, the second metal static arm, the rotating shaft and the metal conductor.
The invention also provides a human body static electricity measuring device which comprises a processor, a pressure sensor, an output module and a battery, wherein the pressure sensor, the output module and the battery are respectively and electrically connected with the processor; the human body static measurement device further comprises a metal conductor, a first metal static arm fixed on the rotating shaft and a second metal static arm movably connected with the rotating shaft, wherein the first metal static arm and the second metal static arm are respectively in direct contact with the metal conductor or are connected with the metal conductor through metal wires, the pressure sensor is fixed in a rotating area of the second metal static arm, and charges are transferred among the first metal static arm, the second metal static arm and the metal conductor.
Further, the rotating shaft is respectively connected to the middle part of the first metal electrostatic arm and the middle part of the second metal electrostatic arm, the first metal electrostatic arm is symmetrical around the rotating shaft, the second metal electrostatic arm is symmetrical around the rotating shaft, and the first metal electrostatic arm and the second metal electrostatic arm are symmetrical around the rotating shaft.
Further, the first metal electrostatic arm and the second metal electrostatic arm are located on the same plane.
Further, the human body static electricity measuring device is in the form of a watch or a bracelet.
In the invention, as the human body static measurement device comprises a first metal static arm fixed on the rotating shaft and a second metal static arm movably connected with the rotating shaft, the rotating shaft is connected with a metal conductor, the pressure sensor is fixed in the rotating area of the second metal static arm, the rotating shaft is made of conductive materials, and charges are transferred among the first metal static arm, the second metal static arm, the rotating shaft and the metal conductor; or, the metal conductor is directly contacted with the first metal electrostatic arm and the second metal electrostatic arm, or is connected with the first metal electrostatic arm and the second metal electrostatic arm through metal wires, and charges are transferred among the first metal electrostatic arm, the second metal electrostatic arm and the metal conductor. Therefore, the human body static electricity measuring device provided by the embodiment of the invention does not need to be grounded, can be worn on a wrist, can continuously test, can measure human body static electricity at any time, and can output a static voltage value through an output module if the wrist is electrified, for example, the static voltage value can be displayed on a display screen or broadcasted through a loudspeaker, and can alarm at the loudspeaker after exceeding a specified value. Therefore, the electrostatic discharge device can effectively remind workers of electrostatic discharge, and the danger of static electricity in work is reduced to the greatest extent.
Drawings
Fig. 1 is a schematic diagram of a prior art electrostatic voltage measurement.
Fig. 2 is a schematic block diagram of a human body static electricity measuring device according to an embodiment of the present invention.
Fig. 3 is a schematic connection diagram of a first metal electrostatic arm, a rotating shaft, a second metal electrostatic arm and a metal conductor in the human body electrostatic measurement device according to the embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantageous effects of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
In order to illustrate the technical scheme of the invention, the following description is made by specific examples.
Referring to fig. 2 and 3, the device for measuring human body static electricity according to the embodiment of the present invention includes a processor 11, a pressure sensor 12 electrically connected to the processor 11, an output module, and a battery 15, wherein the output module may be a display 13 and/or a speaker 14, and the battery 15 is further electrically connected to the pressure sensor 12 and the output module. The human body static electricity measuring device further comprises a first metal static arm 17 fixed on the rotating shaft 16 and a second metal static arm 18 movably connected with the rotating shaft 16, the rotating shaft 16 is connected with a metal conductor 19, and the metal conductor 19 can be in contact with the wrist of a human body. The pressure sensor 12 is fixed in the rotation area of the second metal electrostatic arm 18, for example the pressure sensor 12 is mounted on a circuit board located below the second metal electrostatic arm 18, the pressure sensor 12 may specifically be located at a distance r from the end of the first metal electrostatic arm 17. The rotating shaft is made of conductive materials. Charge is transferred between the first metallic electrostatic arm, the second metallic electrostatic arm, the shaft, and the metallic conductor.
The metal conductor in the human body electrostatic measuring device provided by the embodiment of the invention can be directly contacted with the first metal electrostatic arm and the second metal electrostatic arm without being connected with the rotating shaft, or can be connected with the first metal electrostatic arm and the second metal electrostatic arm through metal wires, so that the rotating shaft can be made of insulating materials, and charges are transferred among the first metal electrostatic arm, the second metal electrostatic arm and the metal conductor.
In the embodiment of the invention, the rotating shaft is respectively connected with the middle part of the first metal electrostatic arm and the middle part of the second metal electrostatic arm, the first metal electrostatic arm can be symmetrical or asymmetrical around the rotating shaft, the second metal electrostatic arm is symmetrical around the rotating shaft, and the first metal electrostatic arm and the second metal electrostatic arm are symmetrical around the rotating shaft. Therefore, the influence of the self gravity of the first metal electrostatic arm and the second metal electrostatic arm on the pressure sensor is counteracted through the lever principle. That is, the gravity of the half of the second metal electrostatic arm close to the pressure sensor is counteracted by the gravity of the other half through the rotating shaft, which is similar to the principle of a balance. The first metal electrostatic arm and the second metal electrostatic arm are located on the same plane. The human body static electricity measuring device provided by the embodiment of the invention can be in the form of a watch or a bracelet. The processor may be a single chip microcomputer, MCU, etc.
The working principle of the human body static electricity measuring device provided by the embodiment of the invention is as follows:
since the human body approximates a conductor, the practitioner works primarily with his hands, and static electricity generated by the human body is mostly detectable by bare hands, or is released. Therefore, when the human body static electricity measuring device provided by the embodiment of the invention is worn on the wrist, if the wrist is electrified, the electric charge of the human body passes through the metal conductorThe electric charge is transmitted to the metal rotating shaft and then transmitted to the first metal electrostatic arm and the second metal electrostatic arm by the metal rotating shaft, or the electric charge of a human body is directly transmitted to the first metal electrostatic arm and the second metal electrostatic arm by the metal conductor or is transmitted to the first metal electrostatic arm and the second metal electrostatic arm by the metal conductor; the charge is uniformly distributed on the first metal electrostatic arm and the second metal electrostatic arm, thereby generating an electrostatic force between the first metal electrostatic arm and the second metal electrostatic arm. The second metal electrostatic arm is movable, so that the electrostatic force can enable the second metal electrostatic arm to rotate in a direction away from the first metal electrostatic arm, the position of the second metal electrostatic arm, which is rotated to the pressure sensor, is blocked by the pressure sensor, repulsive force acts on the pressure sensor to be tested, and the pressure is not influenced by self gravity due to the symmetry of the first metal electrostatic arm and the second metal electrostatic arm. When the pressure sensor measures the pressure, the stress condition between the first metal electrostatic arm and the second metal electrostatic arm is simplified into stress between 2 point charges, and the coulomb law formula is used for: u=kq 1 Q 2 R, or f=kq 1 Q 2 /r 2 Wherein U is the voltage between the first metal electrostatic arm and the second metal electrostatic arm, F is the force applied between the first metal electrostatic arm and the second metal electrostatic arm, K is the coulomb constant, k=9.0×10 9 Nm 2 /C 2 Q1 and Q2 are the electric quantity of the first metal electrostatic arm and the second metal electrostatic arm respectively, and r is the distance from the pressure sensor to the first metal electrostatic arm. The values of Q1 and Q2, i.e., the value of the electrostatic charge, can be obtained by calculation. The electrostatic voltage when the hand is in direct contact with the object can then be calculated based on the coulomb formula (in this case the distance r is calculated with a small distance, for example 0.1mm, representing direct contact). The processor receives the data of the pressure sensor, calculates the electrostatic voltage value, outputs the electrostatic voltage value through the output module, displays the electrostatic voltage value on a display screen or broadcasts the electrostatic voltage value through a loudspeaker, and can give an alarm at the loudspeaker after the electrostatic voltage value exceeds a specified value.
In the invention, as the human body static measurement device comprises a first metal static arm fixed on the rotating shaft and a second metal static arm movably connected with the rotating shaft, the rotating shaft is connected with a metal conductor, the pressure sensor is fixed in the rotating area of the second metal static arm, the rotating shaft is made of conductive materials, and charges are transferred among the first metal static arm, the second metal static arm, the rotating shaft and the metal conductor; or, the metal conductor is directly contacted with the first metal electrostatic arm and the second metal electrostatic arm, or is connected with the first metal electrostatic arm and the second metal electrostatic arm through metal wires, and charges are transferred among the first metal electrostatic arm, the second metal electrostatic arm and the metal conductor. Therefore, the human body static electricity measuring device provided by the embodiment of the invention does not need to be grounded, can be worn on a wrist, can continuously test, can measure human body static electricity at any time, and can output a static voltage value through an output module if the wrist is electrified, for example, the static voltage value can be displayed on a display screen or broadcasted through a loudspeaker, and can alarm at the loudspeaker after exceeding a specified value. Therefore, the electrostatic discharge device can effectively remind workers of electrostatic discharge, and the danger of static electricity in work is reduced to the greatest extent.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (6)
1. The human body static electricity measuring device is characterized by comprising a processor, a pressure sensor, an output module and a battery, wherein the pressure sensor, the output module and the battery are respectively and electrically connected with the processor; the human body static measurement device also comprises a first metal static arm fixed on the rotating shaft and a second metal static arm movably connected with the rotating shaft, the rotating shaft is connected with a metal conductor, the pressure sensor is fixed in the rotating area of the second metal static arm, the rotating shaft is made of conductive materials, and charges are transferred among the first metal static arm, the second metal static arm, the rotating shaft and the metal conductor; the rotating shaft is respectively connected with the middle part of the first metal electrostatic arm and the middle part of the second metal electrostatic arm, the first metal electrostatic arm is symmetrical around the rotating shaft, the second metal electrostatic arm is symmetrical around the rotating shaft, and the first metal electrostatic arm and the second metal electrostatic arm are symmetrical around the rotating shaft; the first metal electrostatic arm and the second metal electrostatic arm are positioned on the same plane; the pressure sensor is mounted on a circuit board, and the circuit board is positioned below the second metal electrostatic arm.
2. The human static electricity measuring device according to claim 1, wherein the human static electricity measuring device is in the form of a wristwatch or a wristband.
3. The human static measurement device according to claim 1, wherein the processor is a single chip or MCU and the output module is a display screen and/or a speaker.
4. The human body static electricity measuring device is characterized by comprising a processor, a pressure sensor, an output module and a battery, wherein the pressure sensor, the output module and the battery are respectively and electrically connected with the processor; the human body static measurement device also comprises a metal conductor, a first metal static arm fixed on the rotating shaft and a second metal static arm movably connected with the rotating shaft, wherein the first metal static arm and the second metal static arm are respectively in direct contact with the metal conductor or are connected with the metal conductor through metal wires, the pressure sensor is fixed in a rotating area of the second metal static arm, and charges are transferred among the first metal static arm, the second metal static arm and the metal conductor; the rotating shaft is respectively connected with the middle part of the first metal electrostatic arm and the middle part of the second metal electrostatic arm, the first metal electrostatic arm is symmetrical around the rotating shaft, the second metal electrostatic arm is symmetrical around the rotating shaft, and the first metal electrostatic arm and the second metal electrostatic arm are symmetrical around the rotating shaft; the first metal electrostatic arm and the second metal electrostatic arm are positioned on the same plane; the pressure sensor is mounted on a circuit board, and the circuit board is positioned below the second metal electrostatic arm.
5. The human static electricity measuring device according to claim 4, wherein the human static electricity measuring device is in the form of a wristwatch or a wristband.
6. The human static measurement device according to claim 4, wherein the processor is a single chip microcomputer or an MCU, and the output module is a display screen and/or a speaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910214218.XA CN109856467B (en) | 2019-03-20 | 2019-03-20 | Human body static electricity measuring device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910214218.XA CN109856467B (en) | 2019-03-20 | 2019-03-20 | Human body static electricity measuring device |
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| CN109856467A CN109856467A (en) | 2019-06-07 |
| CN109856467B true CN109856467B (en) | 2023-09-15 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1041962A1 (en) * | 1982-03-05 | 1983-09-15 | Башкирский государственный университет им.40-летия Октября | Electrostatic field strength measuring device |
| JPH07159467A (en) * | 1993-12-07 | 1995-06-23 | Kasuga Denki Kk | Portable detector for detecting charged potential of human body |
| US6150945A (en) * | 1999-03-25 | 2000-11-21 | 3M Innovative Properties Company | Static charge warning device |
| CN202025045U (en) * | 2011-03-17 | 2011-11-02 | 湖州师范学院 | Device for measuring electrification quantity of thin wall small hole |
| CN102959927A (en) * | 2010-06-30 | 2013-03-06 | 晶像股份有限公司 | Detection of cable connections for electronic devices |
| CN205353223U (en) * | 2016-01-26 | 2016-06-29 | 王德言 | Vibration capacitanc electrostatic transducer |
| TWI540325B (en) * | 2015-02-13 | 2016-07-01 | 啟碁科技股份有限公司 | Electrostatic detection device, circuit board device, and electrostatic detection method |
-
2019
- 2019-03-20 CN CN201910214218.XA patent/CN109856467B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1041962A1 (en) * | 1982-03-05 | 1983-09-15 | Башкирский государственный университет им.40-летия Октября | Electrostatic field strength measuring device |
| JPH07159467A (en) * | 1993-12-07 | 1995-06-23 | Kasuga Denki Kk | Portable detector for detecting charged potential of human body |
| US6150945A (en) * | 1999-03-25 | 2000-11-21 | 3M Innovative Properties Company | Static charge warning device |
| CN102959927A (en) * | 2010-06-30 | 2013-03-06 | 晶像股份有限公司 | Detection of cable connections for electronic devices |
| CN202025045U (en) * | 2011-03-17 | 2011-11-02 | 湖州师范学院 | Device for measuring electrification quantity of thin wall small hole |
| TWI540325B (en) * | 2015-02-13 | 2016-07-01 | 啟碁科技股份有限公司 | Electrostatic detection device, circuit board device, and electrostatic detection method |
| CN205353223U (en) * | 2016-01-26 | 2016-06-29 | 王德言 | Vibration capacitanc electrostatic transducer |
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