CN2807268Y - Horizontal modulating type surface potentiometer sensor - Google Patents
Horizontal modulating type surface potentiometer sensor Download PDFInfo
- Publication number
- CN2807268Y CN2807268Y CN 200520042172 CN200520042172U CN2807268Y CN 2807268 Y CN2807268 Y CN 2807268Y CN 200520042172 CN200520042172 CN 200520042172 CN 200520042172 U CN200520042172 U CN 200520042172U CN 2807268 Y CN2807268 Y CN 2807268Y
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- tuning fork
- type surface
- shell
- vibrating
- circle
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Abstract
The utility model relates to a horizontal modulating type surface potentiometer sensor, which is characterized in that the horizontal modulating type surface potentiometer sensor comprises an electrode window, an electrode piece, electromagnetic blocks, a plug, a left tuning fork, a right tuning fork, a preamplifier and a vibrating reed, a fastening ring is arranged at the lower end of an outer shell and one side of the fastening ring is provided with a stop screw. A guard ring is arranged in the fastening ring, and the bottom of the guard ring is provided with the electrode window. The upper end of the center of the electrode window is provided with the electrode piece which is connected with one end of the vibrating reed. The other end of the vibrating reed is vertically connected with the left tuning fork and the right tuning fork by clamping blocks of the vibrating reed, and the left tuning fork and the right tuning fork are connected with a bed frame which is fixed on the inner wall of an outer shell. The inner sides of the left tuning fork and the right tuning fork are provided with the electromagnetic blocks, and the preamplifier is arranged in the outer shell by a fixed board. The plug is arranged on one side of the outer shell, is connected with the electromagnetic blocks by cables and is connected with the preamplifier simultaneously. The utility model has the advantages that imported goods can be replaced, the measuring sensitivity is high, the resolving power is strong and the operation is convenient.
Description
Technical field
The utility model relates to a kind of level modulation type surface potential flowmeter sensor, can be used for the mensuration of lab scale product distribution potential, the charging potential of energy measurement optical conductor, and light decay, peace declines and rest potential; The also surface potential of the surface charge density of energy measurement electret and macromolecule membrane or be used for measuring the DC voltage of highly-resistant material, be the instrument of researchs such as xerox, xeroprinting, xerography, electrostatic recording, production unit indispensability, belong to sensor technical field.
Background technology
Sensor is one of gordian technique of information age, it is to obtain the important means of information accurately and reliably, the sensor of surface measurements current potential is by external import at present, general direct inductosyn is job insecurity in the environment that has charged particle or ion such as effluve to produce, more at dust, can produce drift in the bigger environment of humidity; The orbiting vane sensor produces " abnormality " error often; The collecting current type sensor produces harmful psychological application to human body, is subjected to the influence of air flow to cause measurement inaccurate.
Summary of the invention
The purpose of this utility model is a kind of easy and simple to handle, level modulation type surface potential flowmeter sensor of measuring accurately, can substituting import of invention.
For realizing above purpose, the technical solution of the utility model provides a kind of level modulation type surface potential flowmeter sensor, it is characterized in that, by stop screw, guard ring, electrode window through ray, pole piece, tighten up circle, shell, electromagnetic block, the vibrating fixture block, plug, left and right sides tuning fork, pedestal, prime amplifier, vibrating is formed, tighten up circle and be located at the lower end of shell, tighten up the circle one side be provided with stop screw, guard ring is located at and is tightened up in the circle, bottom at guard ring is provided with electrode window through ray, upper end at the electrode window through ray center is provided with pole piece, pole piece is connected with an end of vibrating, the other end of vibrating vertically is connected with left and right sides tuning fork by the vibrating fixture block, left and right sides tuning fork is connected with pedestal, and pedestal is fixed in the inwall of shell, is provided with electromagnetic block in the inboard of left and right sides tuning fork, prime amplifier is located in the shell by fixed head, plug is located at a side of shell, is connected with electromagnetic block by cable, is connected with prime amplifier simultaneously.
Described guard ring, tighten up the circle and shell be in same center line.
The utility model is modulated into AC signal input instrument with the surface potential of testee and detects, electromagnet drives vibrating with certain frequency, driving pole piece vibrates together, because modulator electrode constantly vibrates, make electrode window through ray opening and closing constantly, cause the line of electric force that is coupled between potential electrode and the sample surfaces to be cut off, therefore induce an alternating voltage on the potential electrode, thereby the direct current signal that electrode is sensed is modulated into AC signal, after prime amplifier carries out impedance variation, be input in the instrument host and measure.
Tuning fork can keep the frequency of its sound constant in for a long time, and the amplitude of vibration and temperature all are not easy to make frequency shift, and the frequency of tuning fork has up to per second 90,000 all persons, and tuning fork is all made with steel or Elastic Steel usually.Little because of the tuning fork size, the output of sounding is seldom imported in the air, again because of its method for oscillating, has only the compressional wave composition of minute quantity to vibrate along fork handle, so the retardance of vibrational system is few.
AC signal on the utility model pole piece is decided by the vibration of the voltage and the pole piece of tested electrified body, not decay in time, and therefore, this instrument also can be used as the fixing measuring instrument that inserts except that can be used as measurement instrument.
The utility model has the advantages that:
1. can substitute import, adopt non-contact measurement, can not make the sample loss of charge;
2. the boundary electric field influence is little during surface potential instrumentation light decay of the present utility model;
3. the surface potential meter response time of the present utility model is fast, and the window area of potential electrode can be done very greatly, and highly sensitive, and resolution is strong, and is easy to operate.
Description of drawings
Fig. 1 is a level modulation type surface potential flowmeter sensor structural representation.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
Embodiment 1
As shown in Figure 1, be level modulation type surface potential flowmeter sensor structural representation, described level modulation type surface potential flowmeter sensor by stop screw 1, guard ring 2, electrode window through ray 3, pole piece 4, tighten up circle 5, shell 6, electromagnetic block 7, vibrating fixture block 8, plug 9, left and right sides tuning fork 10,11, pedestal 12, prime amplifier 13, vibrating 14 are formed.
Tighten up the lower end that circle 5 is installed in shell 6, stop screw 1 is arranged on 5 one sides tightening up circle, guard ring 2 is installed in and tightens up in the circle 5, described guard ring 2, tighten up circle 5 and shell 6 and be in same center line, have electrode window through ray 3 in the bottom of guard ring 2, the diameter of described electrode window through ray 3 is less than 5mm, upper end at electrode window through ray 3 centers is provided with pole piece 4, pole piece 4 is connected with an end of vibrating 14, the other end of vibrating 14 is by vibrating fixture block 8 vertical and left and right sides tuning forks 10,11 connect left and right sides tuning fork 10,11 are connected left and right sides tuning fork 10 with pedestal 12,11 materials are steel or Elastic Steel, pedestal 12 is fixed in the inwall of shell 6, at left and right sides tuning fork 10,11 installed inside electromagnetic block 7, prime amplifier 13 is fixed in the shell 6 by fixed head, and plug 9 is located at a side of shell 6, be connected with electromagnetic block 7 by cable, be connected with prime amplifier 13 simultaneously.
During work, underneath one block check plate in electrode window through ray 3, testing sample is placed between electrode window through ray 3 and the verification plate, distance is 5mm to the maximum between pole piece 4 and the institute's test sample product, plug 9 is connected with extraneous power supply, electric current drives vibrating 14 by electromagnetic block 7 with certain frequency and drives pole piece 4 vibrations, gap between pole piece 4 and the sample is changed, thereby the direct current signal that pole piece 4 is sensed is modulated into AC signal, is input to instrument host and carries out potential measurement after prime amplifier 13 carries out impedance conversion.
The utility model also can be made the single-tone V shape, is about to left tuning fork 10 and removes, and adds a fixed block 15 in the position of removing a tuning fork and keeps the balance of whole device with this.
Claims (5)
1. level modulation type surface potential flowmeter sensor, it is characterized in that, by stop screw (1), guard ring (2), electrode window through ray (3), pole piece (4), tighten up circle (5), shell (6), electromagnetic block (7), vibrating fixture block (8), plug (9), left and right sides tuning fork (10,11), pedestal (12), prime amplifier (13), vibrating (14) is formed, tighten up circle (5) and be located at the lower end of shell (6), be provided with stop screw (1) tightening up circle (5) one sides, guard ring (2) is located at and is tightened up in the circle (5), be provided with electrode window through ray (3) in the bottom of guard ring (2), upper end at electrode window through ray (3) center is provided with pole piece (4), pole piece (4) is connected with an end of vibrating (14), the other end of vibrating (14) is vertical and left and right sides tuning fork (10 by vibrating fixture block (8), 11) connect, left and right sides tuning fork (10,11) be connected with pedestal (12), pedestal (12) is fixed in the inwall of shell (6), at left and right sides tuning fork (10,11) inboard is provided with electromagnetic block (7), prime amplifier (13) is located in the shell (6) by fixed head, plug (9) is located at a side of shell (6), be connected with electromagnetic block (7) by cable, be connected with prime amplifier (13) simultaneously.
2. vertical modulation type surface potential flowmeter sensor according to claim 1 is characterized in that, described guard ring (2), tightens up circle (5) and shell (6) is in same center line.
3. vertical modulation type surface potential flowmeter sensor according to claim 1 is characterized in that the diameter of described electrode window through ray (3) is less than 5mm.
4. vertical modulation type surface potential flowmeter sensor according to claim 1 is characterized in that, distance is 12mm to the maximum between described pole piece (4) and the institute's test sample product.
5. vertical modulation type surface potential flowmeter sensor according to claim 1 is characterized in that, described left and right sides tuning fork (10,11) material is steel or Elastic Steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520042172 CN2807268Y (en) | 2005-06-06 | 2005-06-06 | Horizontal modulating type surface potentiometer sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520042172 CN2807268Y (en) | 2005-06-06 | 2005-06-06 | Horizontal modulating type surface potentiometer sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2807268Y true CN2807268Y (en) | 2006-08-16 |
Family
ID=36921568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520042172 Expired - Fee Related CN2807268Y (en) | 2005-06-06 | 2005-06-06 | Horizontal modulating type surface potentiometer sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2807268Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102166506A (en) * | 2011-03-02 | 2011-08-31 | 厦门大学 | Method for confining alternating current electric field of charged particles in solution |
| CN106970273A (en) * | 2017-03-30 | 2017-07-21 | 北京卫星环境工程研究所 | Spiralism type surface potential measurement device based on Electro-optical Modulation |
-
2005
- 2005-06-06 CN CN 200520042172 patent/CN2807268Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102166506A (en) * | 2011-03-02 | 2011-08-31 | 厦门大学 | Method for confining alternating current electric field of charged particles in solution |
| CN106970273A (en) * | 2017-03-30 | 2017-07-21 | 北京卫星环境工程研究所 | Spiralism type surface potential measurement device based on Electro-optical Modulation |
| CN106970273B (en) * | 2017-03-30 | 2019-10-29 | 北京卫星环境工程研究所 | Spiralism type surface potential measurement device based on Electro-optical Modulation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060816 Termination date: 20100606 |