CN205192679U - Micropressure sensor's control circuit and micropressure sensor thereof - Google Patents
Micropressure sensor's control circuit and micropressure sensor thereof Download PDFInfo
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- CN205192679U CN205192679U CN201520845627.7U CN201520845627U CN205192679U CN 205192679 U CN205192679 U CN 205192679U CN 201520845627 U CN201520845627 U CN 201520845627U CN 205192679 U CN205192679 U CN 205192679U
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- control circuit
- pressure sensor
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Abstract
(B, ) the utility model relates to a sensor technology field, concretely relates to micropressure sensor's control circuit and micropressure sensor thereof, the utility model provides a control circuit sets up in micropressure sensor, and it includes: inductance coils, inductance coils with magnet clearance fit among the micropressure sensor is in order to produce the inductance signal, inductance coils is connected to oscillation circuit with capacitance parallel connection or after establishing ties, the frequency signal that oscillation circuit produced exports frequency dividing circuit to, frequency dividing circuit export after carrying out frequency division processing to the frequency, the utility model discloses a control circuit carries out collection and processing to pressure signal, and its sensitivity is high, the very big requirement of having satisfied the high sensitivity that the existing equipment detected atmospheric pressure. (B, )
Description
Technical field
the utility model relates to sensor technical field, is specifically related to a kind of control circuit of micro-pressure sensor and a kind of micro-pressure sensor of this control circuit of application.
Background technology
blast switch can be provided with and other type wind pressure sensor blast switch utilizes the static pressure of gas to promote microswitch to realize the break-make of signal in the current electric equipment products such as gas heater, smoke exhaust ventilator on the market; But existing blast switch all adopts mechanical structure, its poor sensitivity failure rate is high, and other type wind pressure sensor will accomplish the with high costs of minute-pressure rank, not easily promotes, and influenced by ambient temperature larger, is not well positioned to meet the requirement of existing equipment.
Summary of the invention
for overcoming above-mentioned defect, namely the purpose of this utility model is the control circuit and the micro-pressure sensor thereof that provide a kind of micro-pressure sensor.
the purpose of this utility model is achieved through the following technical solutions:
the utility model is that a kind of described control circuit is arranged in micro-pressure sensor, it comprises: described control circuit is arranged in micro-pressure sensor, it comprises: telefault, described telefault coordinates to produce inductance signal with the magnets free in described micro-pressure sensor, described telefault is connected to oscillatory circuit with Capacitance parallel connection or after connecting, the frequency signal that described oscillatory circuit produces exports frequency dividing circuit to, and described frequency dividing circuit exports after carrying out scaling down processing to frequency.
further, the output terminal of described frequency dividing circuit is provided with Wiring port.
a kind of micro-pressure sensor of the utility model, comprising: can carry out the magnet that moves up and down and control circuit as above with bracing frame in the cavity of micro-pressure sensor, described magnets free is arranged in the telefault in described control circuit.
the utility model carries out acquisition and processing by control circuit to pressure signal, and its sensitivity is high, meets the highly sensitive requirement that existing equipment detects air pressure greatly.
Accompanying drawing explanation
for ease of illustrating, the utility model is described in detail by following preferred embodiment and accompanying drawing.
fig. 1 is overall logic structural representation of the present utility model.
Embodiment
in order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further described.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
refer to Fig. 1, the control circuit of micro-pressure sensor of the present utility model, it comprises: telefault 110, described telefault 110 coordinates to produce inductance signal with the magnets free in described micro-pressure sensor, described telefault 110 is in parallel with electric capacity 120 or be connected to oscillatory circuit 130 after connecting, frequency dividing circuit 141 is sent to after described oscillatory circuit 130 produces frequency signal, the electrical signal of the frequency that described frequency dividing circuit 141 produces for oscillatory circuit 130 carries out frequency adjustment, line frequency signal of going forward side by side exports, and what it exported is frequency signal.The frequency produced due to the oscillating circuit of micro-pressure sensor is generally more than ten KHz or tens KHz, such high frequency can take too many resource for the single-chip microcomputer in equipment, and affect performance or cost, the frequency that the utility model exports through frequency dividing circuit process is within a few KHz, the single-chip microcomputer that such low-frequency signals is conducive in equipment reads, and practicality is wider.
further, the output terminal of described frequency dividing circuit 141 is provided with Wiring port, and it is convenient to be connected with external unit.
a kind of micro-pressure sensor of the utility model, comprise: can carry out with bracing frame the magnet that moves up and down in the cavity of micro-pressure sensor, and control circuit as above, described magnets free is arranged in the telefault 110 in described control circuit, in use, bracing frame moves up and down in the cavity of micro-pressure sensor along with the difference of pressure, drives magnet to move up and down simultaneously, makes to produce different inductive sensor signals in telefault 110.
the foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (3)
1. the control circuit of a micro-pressure sensor, it is characterized in that, described control circuit is arranged in micro-pressure sensor, it comprises: telefault, described telefault coordinates to produce inductance signal with the magnets free in described micro-pressure sensor, described telefault is connected to oscillatory circuit with Capacitance parallel connection or after connecting, and the frequency signal that described oscillatory circuit produces exports frequency dividing circuit to, and described frequency dividing circuit exports after carrying out scaling down processing to frequency.
2. the control circuit of micro-pressure sensor according to claim 1, is characterized in that, the output terminal of described frequency dividing circuit is provided with Wiring port.
3. a micro-pressure sensor, it is characterized in that, comprise: can carry out the magnet that moves up and down and the control circuit as described in any one of claim 1 to 2 with bracing frame in the cavity of micro-pressure sensor, described magnets free is arranged in the telefault in described control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520845627.7U CN205192679U (en) | 2015-10-28 | 2015-10-28 | Micropressure sensor's control circuit and micropressure sensor thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520845627.7U CN205192679U (en) | 2015-10-28 | 2015-10-28 | Micropressure sensor's control circuit and micropressure sensor thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205192679U true CN205192679U (en) | 2016-04-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520845627.7U Active CN205192679U (en) | 2015-10-28 | 2015-10-28 | Micropressure sensor's control circuit and micropressure sensor thereof |
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| CN (1) | CN205192679U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018148884A1 (en) * | 2017-02-15 | 2018-08-23 | 深圳市汇顶科技股份有限公司 | Displacement sensor, detection device and electronic device provided with same |
-
2015
- 2015-10-28 CN CN201520845627.7U patent/CN205192679U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018148884A1 (en) * | 2017-02-15 | 2018-08-23 | 深圳市汇顶科技股份有限公司 | Displacement sensor, detection device and electronic device provided with same |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |