CN203965527U - A kind of electrostatic admeasuring apparatus - Google Patents

A kind of electrostatic admeasuring apparatus Download PDF

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Publication number
CN203965527U
CN203965527U CN201420381377.1U CN201420381377U CN203965527U CN 203965527 U CN203965527 U CN 203965527U CN 201420381377 U CN201420381377 U CN 201420381377U CN 203965527 U CN203965527 U CN 203965527U
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signal
circuit
electrostatic
chip microcomputer
displays
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CN201420381377.1U
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王文庆
张克仁
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SHENYANG HUAXING EXPLOSION-PROOF EQUIPMENT Co Ltd
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SHENYANG HUAXING EXPLOSION-PROOF EQUIPMENT Co Ltd
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Abstract

A kind of electrostatic admeasuring apparatus belongs to electrostatic measurement technical field, relates in particular to a kind of electrostatic admeasuring apparatus.The utility model provides a kind of and measures accurately and the low electrostatic admeasuring apparatus of cost.The utility model comprises condenser type Electret condenser microphone, signal sampling audio frequency filter amplification circuit, single-chip microcomputer micro-signal amplifier processes and displays circuit, power circuit and static switching, the top-level metallic matter signal receiving plane of its structural feature condenser type Electret condenser microphone is the electrostatic induction utmost point, the coupling electrode of condenser type Electret condenser microphone is electrostatic induction signal output port, electrostatic induction signal output port respectively with resistance R one end, signal sampling audio frequency filter amplification circuit input end is connected, the resistance R other end respectively with single-chip microcomputer micro-signal amplifier processes and displays circuit power input end, power circuit output end is connected, the signal output port of signal sampling audio frequency filter amplification circuit is connected with the signal input port of single-chip microcomputer micro-signal amplifier processes and displays circuit.

Description

A kind of electrostatic admeasuring apparatus
Technical field
The utility model belongs to electrostatic measurement technical field, relates in particular to a kind of electrostatic admeasuring apparatus.
Background technology
In the production of the production division such as chemical industry, oil, often can produce electrostatic charge.These electric charges are sometimes because material insulation property is good, and surrounding environment relative humidity is difficult for leaking compared with low grade, and this will cause gathering in a large number of electrostatic charge, forms high electrostatic potential, and causes blast, fire, electrostatic shock or fault in production etc.Therefore, electrostatic measurement is very important to research static mechanism with preventing that generation of static electricity from endangering.
The accuracy rate of existing static probe measurement is extremely low, there is no intrinsic safety type circuit design and unstable, there is no output switch control; Therefore, be badly in need of a kind of electrostatic measuring device accurate, working stability of measuring.
Summary of the invention
The utility model is exactly for the problems referred to above, provides a kind of and measures accurately and the low electrostatic admeasuring apparatus of cost.
For achieving the above object, the utility model adopts following technical scheme, the utility model comprises condenser type Electret condenser microphone, signal sampling audio frequency filter amplification circuit, single-chip microcomputer micro-signal amplifier processes and displays circuit, power circuit and static switching, the top-level metallic matter signal receiving plane of its structural feature condenser type Electret condenser microphone is the electrostatic induction utmost point, the coupling electrode of condenser type Electret condenser microphone is electrostatic induction signal output port, electrostatic induction signal output port respectively with resistance R one end, signal sampling audio frequency filter amplification circuit input end is connected, the resistance R other end respectively with single-chip microcomputer micro-signal amplifier processes and displays circuit power input end, power circuit output end is connected, the signal output port of signal sampling audio frequency filter amplification circuit is connected with the signal input port of single-chip microcomputer micro-signal amplifier processes and displays circuit, and the control signal output port of single-chip microcomputer micro-signal amplifier processes and displays circuit is connected with the switch controlling signal input port of static switching.
As a kind of preferred version, static switching described in the utility model adopts photoelectrical coupler, and the light emitting diode input end of photoelectrical coupler is connected with the control signal output port of described single-chip microcomputer micro-signal amplifier processes and displays circuit.
As another kind of preferred version, power circuit described in the utility model comprises the 1.5V electric battery of four series connection, 0.1 μ F electric capacity, 80mA fuse, 10mH inductance, the one 5V schottky diode and the 2nd 5V schottky diode, battery anode end respectively with 0.1 μ F electric capacity one end, 80mA fuse one end is connected, the 80mA fuse other end respectively with a 5V schottky diode cathode terminal, 10mH inductance one end is connected, the 10mH inductance other end respectively with described power circuit output end one end, the 2nd 5V schottky diode cathode terminal is connected, the 2nd 5V schottky diode anode tap respectively with the described power circuit output end other end, the one 5V schottky diode anode tap, the 0.1 μ F electric capacity other end, electric battery negative pole end is connected.
Secondly, single-chip microcomputer micro-signal amplifier processes and displays circuit described in the utility model adopts liquid crystal display.
In addition, single-chip microcomputer described in the utility model adopts mps430 chip.
The utility model beneficial effect.
The utility model adopts Electret condenser microphone as probe, and microphone senses the variation of static microphone electric capacity, realizes the absolute measurement of electrostatic potential or electrostatic field.Electret capacitor microphone cost is low, stable performance, measuring error is minimum, coupling capacitance variable quantity is large, highly sensitive, can realize the detection to faint electrostatic field.
The utility model, due to static switching being set, therefore can also be served as control instrument, and the static that can be widely used in the X eliminator that commercial production uses monitors and detects.
The utility model signal sampling audio frequency filter amplification circuit, can exchange clutter filtering by the sound of condenser type Electret condenser microphone output, and electrostatic measurement accurately, reliably.
Brief description of the drawings
Below in conjunction with the drawings and specific embodiments, the utility model is described further.The utility model protection domain is not only confined to the statement of following content.
Fig. 1 is the utility model schematic block circuit diagram.
Fig. 2 is the utility model power circuit circuit theory diagrams.
In figure, 1 is that condenser type Electret condenser microphone, 2 is that signal sampling audio frequency filter amplification circuit, 3 is that single-chip microcomputer micro-signal amplifier processes and displays circuit, 4 is static switching.
Embodiment
As shown in the figure, the utility model comprises condenser type Electret condenser microphone, signal sampling audio frequency filter amplification circuit, single-chip microcomputer micro-signal amplifier processes and displays circuit, power circuit and static switching, the top-level metallic matter signal receiving plane of its structural feature condenser type Electret condenser microphone is the electrostatic induction utmost point, the coupling electrode of condenser type Electret condenser microphone is electrostatic induction signal output port, electrostatic induction signal output port respectively with resistance R one end, signal sampling audio frequency filter amplification circuit input end is connected, the resistance R other end respectively with single-chip microcomputer micro-signal amplifier processes and displays circuit power input end, power circuit output end is connected, the signal output port of signal sampling audio frequency filter amplification circuit is connected with the signal input port of single-chip microcomputer micro-signal amplifier processes and displays circuit, and the control signal output port of single-chip microcomputer micro-signal amplifier processes and displays circuit is connected with the switch controlling signal input port of static switching.
Described static switching adopts photoelectrical coupler, and the light emitting diode input end of photoelectrical coupler is connected with the control signal output port of described single-chip microcomputer micro-signal amplifier processes and displays circuit.Static switching value can be made as 2000 volts, and recording static is open circuit lower than 2000 volts of on off states, and static is higher than 2000 volts of switch closures.
Described power circuit comprises the 1.5V electric battery of four series connection, 0.1 μ F electric capacity, 80mA fuse, 10mH inductance, the one 5V schottky diode and the 2nd 5V schottky diode, battery anode end respectively with 0.1 μ F electric capacity one end, 80mA fuse one end is connected, the 80mA fuse other end respectively with a 5V schottky diode cathode terminal, 10mH inductance one end is connected, the 10mH inductance other end respectively with described power circuit output end one end, the 2nd 5V schottky diode cathode terminal is connected, the 2nd 5V schottky diode anode tap respectively with the described power circuit output end other end, the one 5V schottky diode anode tap, the 0.1 μ F electric capacity other end, electric battery negative pole end is connected.15 microamperes of the utility model power circuit bulk supply quiescent currents, 25 milliamperes of working currents; Meet inbeing safe explosion prevention standard.
Described single-chip microcomputer micro-signal amplifier processes and displays circuit adopts liquid crystal display.
Described single-chip microcomputer adopts mps430 chip.
Below in conjunction with the brief description of the drawings course of work of the present utility model.
On condenser type Electret condenser microphone (both electrostatic transducers) output terminal, there is exchanging sound wave electric potential signal and DC static induced potential signal, sound is exchanged clutter filtering by signal sampling audio frequency filter amplification circuit, DC static signal is retained and amplified to single-chip microcomputer, this signal amplifies again by single-chip microcomputer micro-signal amplifier processes and displays circuit, after filtering and rectification, become the electric signal of 0~5 volt, through being converted to electric field value and charge value, charge value is shown on the liquid crystal display of single-chip microcomputer micro-signal amplifier processes and displays circuit, can directly read the static value recording, and control the switching of static switching, thereby can control large industry equipment, as the external equipments such as X eliminator start and stop.The utility model both can be used as surveying instrument, and the static switching providing can be used as again control instrument.
Be understandable that, above about specific descriptions of the present utility model, only for being described, the utility model is not limited to the described technical scheme of the utility model embodiment, those of ordinary skill in the art is to be understood that, still can modify or be equal to replacement the utility model, to reach identical technique effect; Use needs as long as meet, all within protection domain of the present utility model.

Claims (5)

1. a kind of electrostatic admeasuring apparatus, comprise condenser type Electret condenser microphone, signal sampling audio frequency filter amplification circuit, single-chip microcomputer micro-signal amplifier processes and displays circuit, power circuit and static switching, the top-level metallic matter signal receiving plane that it is characterized in that condenser type Electret condenser microphone is the electrostatic induction utmost point, the coupling electrode of condenser type Electret condenser microphone is electrostatic induction signal output port, electrostatic induction signal output port respectively with resistance R one end, signal sampling audio frequency filter amplification circuit input end is connected, the resistance R other end respectively with single-chip microcomputer micro-signal amplifier processes and displays circuit power input end, power circuit output end is connected, the signal output port of signal sampling audio frequency filter amplification circuit is connected with the signal input port of single-chip microcomputer micro-signal amplifier processes and displays circuit, and the control signal output port of single-chip microcomputer micro-signal amplifier processes and displays circuit is connected with the switch controlling signal input port of static switching.
2. according to claim 1, an electrostatic admeasuring apparatus, is characterized in that described static switching adopts photoelectrical coupler, and the light emitting diode input end of photoelectrical coupler is connected with the control signal output port of described single-chip microcomputer micro-signal amplifier processes and displays circuit.
3. a kind of electrostatic admeasuring apparatus according to claim 2, it is characterized in that described power circuit comprises the 1.5V electric battery of four series connection, 0.1 μ F electric capacity, 80mA fuse, 10mH inductance, the one 5V schottky diode and the 2nd 5V schottky diode, battery anode end respectively with 0.1 μ F electric capacity one end, 80mA fuse one end is connected, the 80mA fuse other end respectively with a 5V schottky diode cathode terminal, 10mH inductance one end is connected, the 10mH inductance other end respectively with described power circuit output end one end, the 2nd 5V schottky diode cathode terminal is connected, the 2nd 5V schottky diode anode tap respectively with the described power circuit output end other end, the one 5V schottky diode anode tap, the 0.1 μ F electric capacity other end, electric battery negative pole end is connected.
4. according to claim 3, an electrostatic admeasuring apparatus, is characterized in that described single-chip microcomputer micro-signal amplifier processes and displays circuit adopts liquid crystal display.
5. according to claim 4, an electrostatic admeasuring apparatus, is characterized in that described single-chip microcomputer micro-signal amplifier processes and displays circuit adopts mps430 chip.
CN201420381377.1U 2014-07-11 2014-07-11 A kind of electrostatic admeasuring apparatus Active CN203965527U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420381377.1U CN203965527U (en) 2014-07-11 2014-07-11 A kind of electrostatic admeasuring apparatus

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Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107329005A (en) * 2016-12-02 2017-11-07 北京理工大学 A kind of the orientation detection device and its detection method of the mobile electrical body based on electret effect
CN108344987A (en) * 2018-01-04 2018-07-31 中国人民解放军91388部队 Multiple submatrixes synthetic aperture sonar frequency domain system function based on numerical computation method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107329005A (en) * 2016-12-02 2017-11-07 北京理工大学 A kind of the orientation detection device and its detection method of the mobile electrical body based on electret effect
CN108344987A (en) * 2018-01-04 2018-07-31 中国人民解放军91388部队 Multiple submatrixes synthetic aperture sonar frequency domain system function based on numerical computation method

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