CN210109216U - Human body static electricity measuring device - Google Patents
Human body static electricity measuring device Download PDFInfo
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- CN210109216U CN210109216U CN201920362113.4U CN201920362113U CN210109216U CN 210109216 U CN210109216 U CN 210109216U CN 201920362113 U CN201920362113 U CN 201920362113U CN 210109216 U CN210109216 U CN 210109216U
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Abstract
The utility model belongs to prevent static test field, especially relate to a human static measuring device. The body static electricity measuring device comprises a shell, a cover body, a rotating shaft, a control circuit board, a display module and a pressure sensor, wherein the display module and the pressure sensor are respectively and electrically connected with the control circuit board; the human body static electricity measuring device further comprises a first metal static electricity arm fixed on the rotating shaft and a second metal static electricity 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 electricity arm, the rotating shaft is made of a conductive material, and charges are transmitted among the first metal static electricity arm, the second metal static electricity arm, the rotating shaft and the metal conductor. Therefore, the human static electricity measuring device does not need to be grounded, can be worn on the wrist, can continuously test and measure human static electricity at any time, and if the wrist is electrified, the static voltage value can be output through the display module, so that the working personnel can be effectively reminded of carrying out static electricity release, and the danger of static electricity in the work is reduced to the maximum extent.
Description
Technical Field
The utility model belongs to prevent static test field, especially relate to a human static measuring device.
Background
The prior art electrostatic voltage measuring device has two main ways to measure static electricity: contact and contactless. The principle of electrostatic voltage measurement, whether contact or non-contact, is the induced voltage division method. As shown in fig. 1, an electrostatic voltage E is generated on the left0The region A is the electrostatic voltage region to be measured, and the voltage passes through the capacitor C0And a capacitor CbAfter inductive voltage division, in the capacitor CbMeasuring voltage E at both endsb. However, this method necessarily requires that the entire system be grounded and that the test be intermittent. And the existing electrostatic voltage measuring equipment has large volume and heavy weight and can not be carried about.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a human static measuring device aims at solving current static voltage measuring equipment and requires entire system to need ground connection, and the test has the discontinuity, and is bulky, heavy, can not hand-carry the problem of class.
The utility model provides a human body static electricity measuring device, which comprises a shell, a cover body, a rotating shaft, a control circuit board, a display module and a pressure sensor, wherein the display module and the pressure sensor are respectively and electrically connected with the control circuit board; the human body static electricity measuring device also comprises a first metal static electricity arm fixed on the rotating shaft and a second metal static electricity 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 electricity arm, the rotating shaft is made of a conductive material, and charges are transferred among the first metal static electricity arm, the second metal static electricity arm, the rotating shaft and the metal conductor; the rotating shaft, the control circuit board, the pressure sensor, the first metal electrostatic arm and the second metal electrostatic arm are arranged in a space formed by matching the shell and the cover body, and the display module is arranged on the cover body.
The utility model also provides a human body static electricity measuring device, which comprises a shell, a cover body, a rotating shaft, a control circuit board, a display module and a pressure sensor, wherein the display module and the pressure sensor are respectively and electrically connected with the control circuit board; the human body static electricity measuring 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 and directly contacted with the metal conductor or connected with the metal conductor through metal wires; the rotating shaft, the control circuit board, the pressure sensor, the first metal electrostatic arm and the second metal electrostatic arm are arranged in a space formed by matching the shell and the cover body, and the display module is arranged on the cover body.
Furthermore, 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; the pressure sensor is installed on a control circuit board, and the control circuit board is located below the second metal electrostatic arm.
Furthermore, the second metal electrostatic arm and the first metal electrostatic arm are respectively provided with a first through hole matched with the rotating shaft; the cover body is provided with a second through hole matched with the display module; the shell and the control circuit board are respectively provided with a third through hole matched with the metal conductor, and the first metal electrostatic arm and the second metal electrostatic arm are positioned on the same plane; the metal conductor is arranged outside or in the shell.
Furthermore, two fixing blocks extend out of the inner side of the shell, a groove is formed in the middle of each fixing block, and the groove is used for fixing the first metal electrostatic arm; and clamping grooves matched with the fixing blocks are arranged on two sides of the control circuit board.
Further, human static measuring device still includes the wrist strap, and the wrist strap is fixed in on the casing, and human static measuring device is the form of wrist-watch or bracelet.
In the utility model, because the human body static electricity measuring device comprises a first metal static electricity arm fixed on the rotating shaft and a second metal static electricity 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 electricity arm, and charges are transferred among the first metal static electricity arm, the second metal static electricity arm, the rotating shaft and the metal conductor; the rotating shaft is made of a conductive material, and charges are transferred among the first metal electrostatic arm, the second metal electrostatic 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 a metal lead, and charges are transferred among the first metal electrostatic arm, the second metal electrostatic arm and the metal conductor. Therefore, the embodiment of the utility model provides a human static measuring device does not need ground connection, can wear on the wrist, can continuously test, measures human static at any time, if the wrist is electrified, static voltage value can be exported through display module, for example show on the display screen or report through the speaker, and can report at the speaker after exceeding regulation numerical value. Therefore, the static electricity discharge alarm can effectively remind workers of static electricity discharge, and reduce the danger of static electricity in work to the maximum extent.
Drawings
Fig. 1 is a schematic diagram of a prior art electrostatic voltage measurement.
Fig. 2 is an exploded schematic view of a human body static electricity measuring device provided by the embodiment of the present invention.
Fig. 3 is a schematic structural diagram of the human body static electricity measuring device according to the embodiment of the present invention after assembly.
Detailed Description
In order to make the objects, technical solutions and advantageous effects of the present invention more clearly understood, the present invention is further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In order to explain the technical solution of the present invention, the following description is made by using specific examples.
Referring to fig. 2 and 3, a human body static electricity measuring device provided in an embodiment of the present invention includes a housing 1, a cover 2, a rotating shaft 4, a control circuit board 5, and a display module 3 and a pressure sensor 6 electrically connected to the control circuit board 5, respectively; the human body static electricity measuring device also comprises a first metal static electricity arm 7 fixed on the rotating shaft 4 and a second metal static electricity arm 8 movably connected with the rotating shaft 4, the rotating shaft 4 is connected with a metal conductor 9, and the metal conductor 9 can be contacted with the wrist of a human body. The pressure sensor 6 is fixed in the rotation area of the second metal electrostatic arm 8, for example, the pressure sensor 6 is mounted on the control circuit board 5, the control circuit board 5 is mounted on the housing 1, and the pressure sensor 6 may be located at a distance r from the end of the first metal electrostatic arm 7. The shaft 4 is made of a conductive material. Electric charges are transferred among the first metal electrostatic arm 7, the second metal electrostatic arm 8, the rotating shaft 4 and the metal conductor 9. The rotating shaft 4, the control circuit board 5, the pressure sensor 6, the first metal electrostatic arm 7 and the second metal electrostatic arm 8 are arranged in a space formed by matching the shell 1 and the cover body 2, and the display module 3 is arranged on the cover body 2. The metal conductor 9 may be located outside the housing 1 or embedded in the housing 1.
The embodiment of the utility model provides a metal conductor 9 among the human static measuring device that provides also can not be connected with pivot 4, direct and first metal static arm 7 and the contact of second metal static arm 8, perhaps is connected with first metal static arm 7 and second metal static arm 8 through wire, then pivot 4 can be insulating material, and electric charge transmits between first metal static arm 7, second metal static arm 8 and metal conductor 9.
The embodiment of the utility model provides an in, pivot 4 is connected respectively at the middle part of first metal static arm 7 and the middle part of second metal static arm 8, and first metal static arm 7 can be around 4 symmetries of pivot also can be asymmetric, and second metal static arm 8 is around 4 symmetries of pivot, around 4 symmetries of pivot between first metal static arm 7 and the second metal static arm 8. Thereby canceling out the influence of the self-gravity of the first and second metallic electrostatic arms 7 and 8 on the pressure sensor 6 by the principle of leverage. That is, the gravity of the second metal electrostatic arm 8 near the half of the pressure sensor 6 is offset by the gravity of the other half through the rotating shaft 4, just like the principle of a balance. The first metal electrostatic arm 7 and the second metal electrostatic arm 8 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 embodiment of the utility model provides an in, lid 2 is equipped with the second through-hole 10 that matches with display module 3, and casing 1 and control circuit board 5 are equipped with respectively with metal conductor 9 complex third through-hole 15, second metal static arm 8 and first metal static arm 7 be equipped with respectively with pivot 4 complex first through-hole 11. The first metal electrostatic arm 7 and the second metal electrostatic arm 8 are located on the same plane.
In the embodiment of the utility model provides an in, there are two fixed blocks 12 to the inboard extension of casing 1, and is equipped with recess 13 in the middle of the fixed block 12, and recess 13 is used for fixed first metal static arm 7. The control circuit board 5 is provided at both sides thereof with card slots 14 engaged with the fixing blocks 12, so that the control circuit board 5 is not displaced.
The embodiment of the utility model provides a human static measuring device still includes wrist strap 16, and wrist strap 16 fixes on casing 1 to make human static measuring device can wear on the wrist, the human static of real-time measurement.
The embodiment of the utility model provides a human static measuring device's theory of operation as follows:
since the human body is similar to a conductor, workers mainly use hands, and therefore, static electricity generated by the human body can be mostly detected or released by the naked hands. Therefore, when the human body static electricity measuring device provided by the embodiment of the present invention is worn on the wrist, if the wrist is charged, the electric charge of the human body is transferred to the metal rotating shaft through the metal conductor and then transferred to the first metal static arm and the second metal static arm through the metal rotating shaft, or the electric charge of the human body is transferred to the first metal static arm and the second metal static arm through the metal conductor directly or through the metal wire; the charges are uniformly distributed on the first metal electrostatic arm and the second metal electrostatic arm, so that the electrostatic force is generated between the first metal electrostatic arm and the second metal electrostatic arm. The second metal electrostatic arm is movable, so that the second metal electrostatic arm can be rotated towards the direction far away from the first metal electrostatic arm by the electrostatic force, the pressure sensor is blocked and does not rotate when the second metal electrostatic arm is rotated to the position of the pressure sensor, and the repulsive force acts on the pressure transmissionThe pressure is tested on the sensor and 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 the stress between 2 point charges, and the stress is calculated according to the coulomb's law formula: u ═ kQ1Q2R, or F ═ kQ1Q2/r2Wherein U is the voltage between the first metal electrostatic arm and the second metal electrostatic arm, F is the stress between the first metal electrostatic arm and the second metal electrostatic arm, K is the coulomb constant, and K is 9.0 multiplied by 109Nm2/C2Q1 and Q2 are the electric quantities of the first metal electrostatic arm and the second metal electrostatic arm, respectively, and r is the distance between the pressure sensor and the first metal electrostatic arm. The values of Q1 and Q2, i.e., the values of the electrostatic charge, can be obtained by calculation. Then, the electrostatic voltage when the hand directly touches the object can be calculated according to the coulomb formula (in this case, the distance r is calculated by a small distance such as 0.1mm, which represents direct contact). The control circuit board calculates the static voltage value after receiving the data of the pressure sensor, and outputs the static voltage value through the display module, for example, the static voltage value is displayed on the display module or broadcasted through a loudspeaker, and the alarm can be given out through the loudspeaker after the static voltage value exceeds a specified value.
In the utility model, because the human body static electricity measuring device comprises a first metal static electricity arm fixed on the rotating shaft and a second metal static electricity 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 electricity arm, and charges are transferred among the first metal static electricity arm, the second metal static electricity arm, the rotating shaft and the metal conductor; the rotating shaft is made of a conductive material, and charges are transferred among the first metal electrostatic arm, the second metal electrostatic 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 a metal lead, and charges are transferred among the first metal electrostatic arm, the second metal electrostatic arm and the metal conductor. Therefore, the embodiment of the utility model provides a human static measuring device does not need ground connection, can wear on the wrist, can continuously test, measures human static at any time, if the wrist is electrified, static voltage value can be exported through display module, for example show on the display screen or report through the speaker, and can report at the speaker after exceeding regulation numerical value. Therefore, the static electricity discharge alarm can effectively remind workers of static electricity discharge, and reduce the danger of static electricity in work to the maximum extent.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A human body static electricity measuring device is characterized by comprising a shell, a cover body, a rotating shaft, a control circuit board, a display module and a pressure sensor, wherein the display module and the pressure sensor are respectively and electrically connected with the control circuit board; the human body static electricity measuring device also comprises a first metal static electricity arm fixed on the rotating shaft and a second metal static electricity 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 electricity arm, the rotating shaft is made of a conductive material, and charges are transferred among the first metal static electricity arm, the second metal static electricity arm, the rotating shaft and the metal conductor; the rotating shaft, the control circuit board, the pressure sensor, the first metal electrostatic arm and the second metal electrostatic arm are arranged in a space formed by matching the shell and the cover body, and the display module is arranged on the cover body.
2. The human body static electricity measuring apparatus according to claim 1, wherein the rotation shafts are respectively connected to a middle portion of the first metal static arm and a middle portion of the second metal static arm, the first metal static arm is symmetrical around the rotation shaft, the second metal static arm is symmetrical around the rotation shaft, and the first metal static arm and the second metal static arm are symmetrical around the rotation shaft; the pressure sensor is installed on a control circuit board, and the control circuit board is located below the second metal electrostatic arm.
3. The human body static electricity measuring apparatus according to claim 1, wherein the second metal static electricity arm and the first metal static electricity arm are respectively provided with a first through hole engaged with the rotation shaft; the cover body is provided with a second through hole matched with the display module; the shell and the control circuit board are respectively provided with a third through hole matched with the metal conductor, and the first metal electrostatic arm and the second metal electrostatic arm are positioned on the same plane; the metal conductor is arranged outside or in the shell.
4. The human body static electricity measuring device according to claim 1, wherein two fixing blocks extend from the inner side of the case, and a groove is provided in the middle of the fixing blocks, the groove being used for fixing the first metal static electricity arm; and clamping grooves matched with the fixing blocks are arranged on two sides of the control circuit board.
5. The human body static electricity measuring apparatus according to claim 1, further comprising a wrist band fixed to the case, wherein the human body static electricity measuring apparatus is in the form of a watch or a wrist band.
6. A human body static electricity measuring device is characterized by comprising a shell, a cover body, a rotating shaft, a control circuit board, a display module and a pressure sensor, wherein the display module and the pressure sensor are respectively and electrically connected with the control circuit board; the human body static electricity measuring 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 and directly contacted with the metal conductor or connected with the metal conductor through metal wires; the rotating shaft, the control circuit board, the pressure sensor, the first metal electrostatic arm and the second metal electrostatic arm are arranged in a space formed by matching the shell and the cover body, and the display module is arranged on the cover body.
7. The human body static electricity measuring apparatus according to claim 6, wherein the rotation shafts are respectively connected to a middle portion of the first metal static arm and a middle portion of the second metal static arm, the first metal static arm is symmetrical around the rotation shaft, the second metal static arm is symmetrical around the rotation shaft, and the first metal static arm and the second metal static arm are symmetrical around the rotation shaft; the pressure sensor is installed on a control circuit board, and the control circuit board is located below the second metal electrostatic arm.
8. The human body static electricity measuring apparatus according to claim 6, wherein the second metal static electricity arm and the first metal static electricity arm are respectively provided with a first through hole engaged with the rotation shaft; the cover body is provided with a second through hole matched with the display module; the shell and the control circuit board are respectively provided with a third through hole matched with the metal conductor, and the first metal electrostatic arm and the second metal electrostatic arm are positioned on the same plane; the metal conductor is arranged outside or in the shell.
9. The human body static electricity measuring device according to claim 6, wherein two fixing blocks extend from the inner side of the case, and a groove is provided in the middle of the fixing blocks, the groove being used for fixing the first metal static electricity arm; and clamping grooves matched with the fixing blocks are arranged on two sides of the control circuit board.
10. The human body static electricity measuring apparatus according to claim 6, further comprising a wrist band fixed to the case, wherein the human body static electricity measuring apparatus is in the form of a watch or a wrist band.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920362113.4U CN210109216U (en) | 2019-03-20 | 2019-03-20 | Human body static electricity measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920362113.4U CN210109216U (en) | 2019-03-20 | 2019-03-20 | Human body static electricity measuring device |
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| Publication Number | Publication Date |
|---|---|
| CN210109216U true CN210109216U (en) | 2020-02-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920362113.4U Expired - Fee Related CN210109216U (en) | 2019-03-20 | 2019-03-20 | Human body static electricity measuring device |
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| Country | Link |
|---|---|
| CN (1) | CN210109216U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111521884A (en) * | 2020-06-11 | 2020-08-11 | 青岛大学 | Quantitative non-contact detection device and detection method for human body electrostatic field |
-
2019
- 2019-03-20 CN CN201920362113.4U patent/CN210109216U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111521884A (en) * | 2020-06-11 | 2020-08-11 | 青岛大学 | Quantitative non-contact detection device and detection method for human body electrostatic field |
| CN111521884B (en) * | 2020-06-11 | 2022-06-14 | 青岛大学 | Quantitative non-contact detection method for human body electrostatic field |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200221 Termination date: 20210320 |