CN103234686B - Pressure detection circuit and pressure gauge with digital display - Google Patents
Pressure detection circuit and pressure gauge with digital display Download PDFInfo
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- CN103234686B CN103234686B CN201310101078.8A CN201310101078A CN103234686B CN 103234686 B CN103234686 B CN 103234686B CN 201310101078 A CN201310101078 A CN 201310101078A CN 103234686 B CN103234686 B CN 103234686B
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Abstract
The invention discloses a kind of pressure detection circuit and there is the pressure gauge with digital display of this pressure detection circuit, described pressure detection circuit comprises pressure transducer, control chip and display module, wherein, pressure transducer is converted to electric signal for detecting the pressure signal of environment residing for it, and exports this electric signal to control chip; Control chip for receiving described electric signal, and obtains corresponding digital pressure value according to this electric signal; Display module is used for receiving and showing described digital pressure value.Invention increases the precision of pressure detection, be convenient to user simultaneously and read data.<!--1-->
Description
Technical field
The present invention relates to technical field of pressure detection, particularly a kind of pressure detection circuit and pressure gauge with digital display.
Background technology
Along with the raising of people's living standard, also more and more higher to the requirement of electronic product.As everyone knows, in technical field of pressure detection, the pressure of usual employing mechanical pressure gauge to environment or pressure piping detects, because mechanical pressure gauge is by the size of pointer instruction current pressure values, therefore, the precision measured is lower, overload and poor seismic behavior, and is not easy to user and reads data.
Summary of the invention
Fundamental purpose of the present invention is to provide a kind of pressure detection circuit, is intended to improve tonometric precision, has higher overload capacity and anti-seismic performance simultaneously.
In order to realize goal of the invention, the invention provides a kind of pressure detection circuit, described pressure detection circuit comprises pressure transducer, control chip and display module, wherein,
Pressure transducer is converted to electric signal for detecting the pressure signal of environment residing for it, and exports this electric signal to control chip;
Control chip for receiving described electric signal, and obtains corresponding digital pressure value according to this electric signal;
Display module is used for receiving and showing described digital pressure value.
Preferably, described pressure detection circuit also comprises button electronic circuit, and this button electronic circuit comprises at least one button be connected with control chip, the unit of the state set and display module display digital pressure value that described control chip is selected according to button.
Preferably, described button electronic circuit comprises the first button and the second button, wherein one end ground connection of the first button, and the other end is connected with a signal receiving end of described control chip; One end ground connection of the second button, the other end is connected with another signal receiving end of described control chip.
Preferably, described pressure detection circuit also comprises pilot lamp electronic circuit, and this pilot lamp electronic circuit comprises light emitting diode and the first resistance, wherein the plus earth of light emitting diode, and anode is connected with the signal output part of control chip by the first resistance.
Preferably, described display module is LCDs, and described control chip is connected with LCDs, and exports the digital pressure value of acquisition to LCDs, shows for LCDs.
The present invention also provides a kind of pressure gauge with digital display, and this pressure gauge with digital display comprises pressure detection circuit, and described pressure detection circuit comprises pressure transducer, control chip and display module, wherein,
Pressure transducer is converted to electric signal for detecting the pressure signal of environment residing for it, and exports this electric signal to control chip;
Control chip for receiving described electric signal, and obtains corresponding digital pressure value according to this electric signal;
Display module is used for receiving and showing described digital pressure value.
The pressure signal of environment residing for it is converted to electric signal by arranging pressure transducer by the present invention, receives this electric signal, obtain corresponding digital pressure value simultaneously, and show this digital pressure value by display module according to this electric signal by control chip.Due to the pressure detected is shown by the form of digital pressure value, adopt stem-winder measured pressure value relative to prior art, more intuitively can reflect current pressure size, improve the precision of measurement, there is higher overload capacity and anti-seismic performance simultaneously.In addition, under the complex environment that temperature is changeable, there is temperature correction ability quite accurately, the consistance of measuring accuracy and measurement can be guaranteed.
Accompanying drawing explanation
Fig. 1 is the electrical block diagram of pressure detection circuit one embodiment of the present invention.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
With reference to the structural representation that Fig. 1, Fig. 1 are pressure detection circuit one embodiment of the present invention.The pressure detection circuit that the present embodiment provides comprises pressure transducer 10, control chip 20 and display module 30, wherein,
Pressure transducer 10 is converted to electric signal for the pressure signal of environment residing for it, and exports this electric signal to control chip 20;
Control chip 20 for receiving described electric signal, and obtains corresponding digital pressure value according to this electric signal;
Display module 30 is for receiving and showing described digital pressure value.
During use, first pressure detection circuit is placed in test environment, then voltage signal corresponding to current environment pressure is exported in control chip 20 by pressure transducer 10, obtained the digital pressure value of current environment by this control chip 20 according to the magnitude of voltage analysis of voltage signal, and show this digital pressure value by display module 30.It should be noted that in the present embodiment, digital pressure value is the concrete numerical value (as 100Pa) of current environment pressure.
The pressure signal of environment residing for it is converted to electric signal by arranging pressure transducer 10 by the present invention, receives this electric signal, obtain corresponding digital pressure value simultaneously, and show this digital pressure value by display module 30 according to this electric signal by control chip 20.Due to the pressure detected is shown by the form of digital pressure value, stem-winder measured pressure value is adopted relative to prior art, more intuitively can reflect current pressure size, therefore be more convenient to user and read data, improve the precision of measurement, there is higher overload capacity and anti-seismic performance simultaneously.In addition, under the complex environment that temperature is changeable, there is temperature correction ability quite accurately, the consistance of measuring accuracy and measurement can be guaranteed.
Further, above-mentioned pressure detection circuit also comprises button electronic circuit 40, and this button electronic circuit 40 comprises at least one button be connected with control chip 20, and control chip shows the unit of digital pressure value according to the state set and display module 30 that button is selected.
It should be noted that quantity and the selection mode of button in the present embodiment can be arranged according to actual needs, below for two buttons, detailed description will be made.
In the present embodiment, above-mentioned button electronic circuit 40 comprises the first button K1 and the second button K2, wherein one end ground connection of the first button K1, and the other end is connected with a signal receiving end of described control chip 20; One end ground connection of the second button K2, the other end is connected with another signal receiving end of described control chip 20.
Particularly, in the present embodiment, the signal receiving end of above-mentioned control chip 20 be control chip 20 I O mouth.Such as, when the pressure measured is larger, can by a first button K1, the numerical value unit that now control chip 20 exports the digital voltage value of display module 30 to will change into KPa; When the pressure measured is less, then can by a second button K2, the numerical value unit that now control chip 20 exports the digital voltage value of display module 30 to will change into Pa.In the present embodiment, by the numerical value unit of button amendment digital voltage value, thus improve the sensing range of pressure detection circuit, improve the precision of measurement simultaneously, be therefore more suitable for people and use.
Further, above-mentioned pressure detection circuit also comprises pilot lamp electronic circuit 50, this pilot lamp electronic circuit 50 comprises LED 1 and the first resistance R1, the wherein plus earth of LED 1, and anode is connected with the signal output part of control chip 20 by the first resistance R1.
In the present embodiment, the signal output part of control chip 20 be control chip 20 an I O mouth, after control chip 20 normally powers on, export a high level signal to the signal output part be connected with the first resistance R1, now electric current will by LED 1 to ground.
It should be noted that above-mentioned display module 30 can adopt any displayable element, as LED charactron, LED display etc.In the present embodiment, display module 30 is preferably LCDs.Particularly, above-mentioned control chip is connected with LCDs, and exports the digital pressure value of acquisition to LCDs, shows for LCDs.
The present invention also provides a kind of pressure gauge with digital display, and this pressure gauge with digital display comprises pressure detection circuit, and the structure of this pressure detection circuit can refer to above-described embodiment, does not repeat them here.Naturally, the pressure gauge with digital display due to the present embodiment have employed the technical scheme of above-mentioned pressure detection circuit, and therefore this pressure gauge with digital display has all beneficial effects of above-mentioned pressure detection circuit.
These are only the preferred embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every utilize instructions of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (4)
1. a pressure detection circuit, is characterized in that, comprises pressure transducer, control chip, display module and button electronic circuit, wherein,
Pressure transducer is converted to electric signal for detecting the pressure signal of environment residing for it, and exports this electric signal to control chip;
Control chip for receiving described electric signal, and obtains corresponding digital pressure value according to this electric signal;
Display module is used for receiving and showing described digital pressure value;
Described button electronic circuit comprises the first button and the second button, the unit of the state set and display module display digital pressure value that described control chip is selected according to described first button or the second button; Wherein, one end ground connection of described first button, the other end is connected with a signal receiving end of described control chip; One end ground connection of described second button, the other end is connected with another signal receiving end of described control chip.
2. pressure detection circuit as claimed in claim 1, it is characterized in that, described pressure detection circuit also comprises pilot lamp electronic circuit, this pilot lamp electronic circuit comprises light emitting diode and the first resistance, the wherein plus earth of light emitting diode, anode is connected with the signal output part of control chip by the first resistance.
3. pressure detection circuit as claimed in claim 1 or 2, it is characterized in that, described display module is LCDs, and described control chip is connected with LCDs, and exports the digital pressure value of acquisition to LCDs, shows for LCDs.
4. a pressure gauge with digital display, is characterized in that, comprises pressure detection circuit as claimed any one in claims 1 to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310101078.8A CN103234686B (en) | 2013-03-26 | 2013-03-26 | Pressure detection circuit and pressure gauge with digital display |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310101078.8A CN103234686B (en) | 2013-03-26 | 2013-03-26 | Pressure detection circuit and pressure gauge with digital display |
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| Publication Number | Publication Date |
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| CN103234686A CN103234686A (en) | 2013-08-07 |
| CN103234686B true CN103234686B (en) | 2016-01-27 |
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| CN201310101078.8A Active CN103234686B (en) | 2013-03-26 | 2013-03-26 | Pressure detection circuit and pressure gauge with digital display |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103712742B (en) * | 2013-12-18 | 2015-12-02 | 安徽睿联汽车传感器工程技术有限公司 | A kind of pressure detection circuit |
Citations (3)
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| US6609419B1 (en) * | 1999-02-11 | 2003-08-26 | Emtop Limited | Signal transmission in a tire pressure sensing system |
| CN201897519U (en) * | 2010-06-24 | 2011-07-13 | 浙江吉利汽车有限公司 | TPMS (Tire Pressure Monitor System) low-frequency trigger instrument |
| CN202433146U (en) * | 2011-12-01 | 2012-09-12 | 长安大学 | Digital cylinder pressure detector based on singlechip |
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| JPS6161029A (en) * | 1984-09-03 | 1986-03-28 | Aisin Seiki Co Ltd | Electronic pressure gauge |
| JP2000028458A (en) * | 1998-07-13 | 2000-01-28 | Hitachi Ltd | Pressure detecting apparatus |
| CN2502277Y (en) * | 2001-04-10 | 2002-07-24 | 郑华 | Intelligent digital multimeter |
| CN202216791U (en) * | 2011-08-27 | 2012-05-09 | 东莞市柯氏五金有限公司 | Tension detector |
| CN102494803A (en) * | 2011-12-02 | 2012-06-13 | 中国科学院东北地理与农业生态研究所 | Electronic digital-display speed-reading geothermometer |
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- 2013-03-26 CN CN201310101078.8A patent/CN103234686B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6609419B1 (en) * | 1999-02-11 | 2003-08-26 | Emtop Limited | Signal transmission in a tire pressure sensing system |
| CN201897519U (en) * | 2010-06-24 | 2011-07-13 | 浙江吉利汽车有限公司 | TPMS (Tire Pressure Monitor System) low-frequency trigger instrument |
| CN202433146U (en) * | 2011-12-01 | 2012-09-12 | 长安大学 | Digital cylinder pressure detector based on singlechip |
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Address after: 518000 North Block, 4th Floor, Building 49, Zone B, Tanglang Industrial Zone, Taoyuan Street, Nanshan District, Shenzhen, Guangdong Province (office only) Patentee after: Shenzhen Nanfang Tyco Sensor Technology Co.,Ltd. Address before: 518000 North Block, 4th Floor, Building 49, Zone B, Tanglang Industrial Zone, Taoyuan Street, Nanshan District, Shenzhen, Guangdong Province (office only) Patentee before: Shenzhen Souther Tiger Software Technology Co.,Ltd. |