CN103674356A - Pressure sensor with long service life and high sensitivity - Google Patents
Pressure sensor with long service life and high sensitivity Download PDFInfo
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- CN103674356A CN103674356A CN201310622556.XA CN201310622556A CN103674356A CN 103674356 A CN103674356 A CN 103674356A CN 201310622556 A CN201310622556 A CN 201310622556A CN 103674356 A CN103674356 A CN 103674356A
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Abstract
The invention discloses a pressure sensor with long service life and high sensitivity. The pressure sensor comprises a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a transistor T1, a transistor T2, a diode D1, a diode D2 and a capacitor C, wherein the resistor R1, the resistor R2, the resistor R4 and the resistor R3 are sequentially connected to one another in series to form a closed loop; a common terminal of the resistor R2 and a common terminal of the resistor R3 are sequentially connected with an emitting electrode of the resistor R7, an emitting electrode of the diode D2 and an emitting electrode of the transistor T1; a base electrode of the transistor T1 is connected with a common terminal of the resistor R3 and a common terminal of the resistor R4; a collector electrode of the transistor T1 is sequentially connected with the resistor R5 and a power source VCC; an emitting electrode of the transistor T1 is connected with an emitting electrode of the transistor T2; a base electrode of the transistor T2 is sequentially connected with a common terminal of the capacitor C, a common terminal of the resistor R1 and a common terminal of the resistor R2 in series; a collector electrode of the transistor R2 is sequentially connected with the resistor R6 and the power source VCC in series; and a negative electrode of the diode D1 is connected with a common terminal of the resistor R1 and a common terminal of the resistor R3. By using the principle, the pressure sensor is simple in structure, high in sensitivity, high in pressure resolution ratio, high in overall precision and long in service life.
Description
Technical field
The present invention relates to pressure sensing field, be specifically related to the pressure transducer that long service life and susceptibility are high.
Background technology
Pressure transducer is a kind of sensor the most conventional in industrial practice.General usual pressure sensor is output as simulating signal, and simulating signal refers to that information parameter shows as continuous signal in given range.Or within one period of continuous time interval, the characteristic quantity of its representative information can be rendered as in any moment the signal of any number.And our normally used pressure transducer mainly utilizes piezoelectric effect manufacture to form, such sensor is also referred to as piezoelectric sensor.Pressure transducer is the most widely used a kind of sensor.Traditional pressure transducer be take the device of physical construction type as main, and with the deformation indicated pressure of flexible member, but this physical dimension is large, quality is light, and electricity output can not be provided.Along with the development of semiconductor technology, semiconductor pressure sensor also arises at the historic moment.But existing Sensitivity in Pressure Sensors is poor, integrated circuit is complicated, complex structure, and pressure resolution is poor, synthesis precision is low and serviceable life is short, cannot be for the higher space flight of ask for something, water transport field.
Summary of the invention
The present invention has overcome the deficiencies in the prior art, and the pressure transducer that long service life and susceptibility are high is provided, and this circuit structure is simple, highly sensitive, and pressure resolution is high, synthesis precision is high and long service life.
For solving above-mentioned technical matters, the present invention is by the following technical solutions: the pressure transducer that long service life and susceptibility are high, comprise resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5, resistance R 6, resistance R 7, triode T1, triode T2, diode D1, diode D2 and capacitor C, described resistance R 1, resistance R 2, resistance R 4 and resistance R 3 are connected in series successively and form closed-loop path, and the common port of resistance R 2 and resistance R 4 is the emitter of resistance in series R7, diode D2 and triode T1 successively; The basis set contact resistance R3 of described triode T1 and the common port of resistance R 4, the collector of triode T1 is contact resistance R5 and power supply VCC successively, the emitter of the emitter connecting triode T2 of triode T1; The basis set of described triode T2 is the common port of series capacitance C, resistance R 1 and resistance R 2 successively, and the collector of triode T2 is resistance in series R6 and power supply VCC successively; Described diode D1 negative pole contact resistance R1 and the common port of resistance R 3; Described resistance R 2 and the common end grounding of resistance R 4.
Described resistance R 6 is connected output port V1 with the common port of triode T2, and the common port of resistance R 5 and triode T1 is connected output port V2.
The anodal connecting triode T1 of described diode D2 and the emitter of triode T2, the negative pole contact resistance R7 of diode D2.
Described diode D1 and diode D2 are voltage stabilizing diode.
The resistance of described resistance R 1, resistance R 2, resistance R 3 and resistance R 4 equates.
Compared with prior art, the invention has the beneficial effects as follows: the present invention, by foregoing circuit, has improved the sensitivity coefficient of sensor, and integrated circuit structure is simple, and pressure divides resolution high, minute-pressure is measured, and long service life.
Accompanying drawing explanation
Fig. 1 is circuit diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further elaborated, and embodiments of the invention are not limited to this.
Embodiment:
As shown in Figure 1, the present invention includes resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5, resistance R 6, resistance R 7, triode T1, triode T2, diode D1, diode D2 and capacitor C, the anodal connecting triode T1 of diode D2 and the emitter of triode T2, the negative pole contact resistance R7 of diode D2; Diode D1 and diode D2 are voltage stabilizing diode; The resistance of resistance R 1, resistance R 2, resistance R 3 and resistance R 4 equates.The common port of resistance R 6 and triode T2 is connected output port V1, and the common port of resistance R 5 and triode T1 is connected output port V2.The resistance R 1 of the present embodiment, resistance R 2, resistance R 4 and resistance R 3 are connected in series successively and form closed-loop path, and the common port of resistance R 2 and resistance R 4 is the emitter of resistance in series R7, diode D2 and triode T1 successively.The basis set contact resistance R3 of the triode T1 of the present embodiment and the common port of resistance R 4, the collector of triode T1 is contact resistance R5 and power supply VCC successively, the emitter of the emitter connecting triode T2 of triode T1.The basis set of the triode T2 of the present embodiment is the common port of series capacitance C, resistance R 1 and resistance R 2 successively, and the collector of triode T2 is resistance in series R6 and power supply VCC successively; Described diode D1 negative pole contact resistance R1 and the common port of resistance R 3; Described resistance R 2 and the common end grounding of resistance R 4.
Four resistance R 1, R2, R3, R4 are composed in series closed loop successively, when not being subject to External Force Acting, four resistance are in equilibrium state, two output terminal V1 and V2 are without Output pressure, when being under pressure, four resistance out of trim, two output terminal V1 and V2 output pressure, and output pressure and voltage are proportional, the pressure of two output terminals changes and changes to change by the collector current on two triodes.Common port at power end, triode T1 and triode T2 is provided with voltage stabilizing diode, realizes the protection to two triodes and power supply, prevents the excessive damage electronic component of voltage.This circuit structure is simple, highly sensitive, and pressure resolution is high, synthesis precision is high and long service life.
Just can realize this invention as mentioned above.
Claims (5)
1. the high pressure transducer of long service life and susceptibility, it is characterized in that: comprise resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5, resistance R 6, resistance R 7, triode T1, triode T2, diode D1, diode D2 and capacitor C, described resistance R 1, resistance R 2, resistance R 4 and resistance R 3 are connected in series successively and form closed-loop path, and the common port of resistance R 2 and resistance R 4 is the emitter of resistance in series R7, diode D2 and triode T1 successively; The basis set contact resistance R3 of described triode T1 and the common port of resistance R 4, the collector of triode T1 is contact resistance R5 and power supply VCC successively, the emitter of the emitter connecting triode T2 of triode T1; The basis set of described triode T2 is the common port of series capacitance C, resistance R 1 and resistance R 2 successively, and the collector of triode T2 is resistance in series R6 and power supply VCC successively; Described diode D1 negative pole contact resistance R1 and the common port of resistance R 3; Described resistance R 2 and the common end grounding of resistance R 4.
2. the high pressure transducer of long service life according to claim 1 and susceptibility, is characterized in that: described resistance R 6 is connected output port V1 with the common port of triode T2, and the common port of resistance R 5 and triode T1 is connected output port V2.
3. the high pressure transducer of long service life according to claim 1 and susceptibility, is characterized in that: the anodal connecting triode T1 of described diode D2 and the emitter of triode T2, the negative pole contact resistance R7 of diode D2.
4. the high pressure transducer of long service life according to claim 1 and susceptibility, is characterized in that: described diode D1 and diode D2 are voltage stabilizing diode.
5. the high pressure transducer of long service life according to claim 1 and susceptibility, is characterized in that: the resistance of described resistance R 1, resistance R 2, resistance R 3 and resistance R 4 equates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310622556.XA CN103674356B (en) | 2013-11-30 | 2013-11-30 | Long service life and the high pressure transducer of susceptibility |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310622556.XA CN103674356B (en) | 2013-11-30 | 2013-11-30 | Long service life and the high pressure transducer of susceptibility |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103674356A true CN103674356A (en) | 2014-03-26 |
| CN103674356B CN103674356B (en) | 2015-09-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310622556.XA Expired - Fee Related CN103674356B (en) | 2013-11-30 | 2013-11-30 | Long service life and the high pressure transducer of susceptibility |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU446779A1 (en) * | 1972-12-21 | 1974-10-15 | Краматорский Индустриальный Институт | Device for recording repeatability of loads acting on structural elements |
| CN2879128Y (en) * | 2006-03-18 | 2007-03-14 | 淄博华铭电器设备有限公司 | Electron pressure flux meter |
| CN2879190Y (en) * | 2005-12-22 | 2007-03-14 | 辽宁工程技术大学 | Multi-sensor gas protrudent forecast instrument |
| CN201653635U (en) * | 2009-12-12 | 2010-11-24 | 淄博飞雁先行测控技术有限公司 | Special-purpose micro differential pressure transmitter used for gas detection |
| CN202133499U (en) * | 2011-07-08 | 2012-02-01 | 青岛智腾微电子有限公司 | Pressure transducer of sputtering film type |
| CN202501950U (en) * | 2012-04-01 | 2012-10-24 | 东莞瑞柯电子科技股份有限公司 | Circuit of an encoder type electronic pressure gage |
| CN202937357U (en) * | 2012-11-01 | 2013-05-15 | 中国第一汽车股份有限公司 | Pressure regulator circuit of LNG (liquefied natural gas) engine base on CAN (controller area network) communication |
-
2013
- 2013-11-30 CN CN201310622556.XA patent/CN103674356B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU446779A1 (en) * | 1972-12-21 | 1974-10-15 | Краматорский Индустриальный Институт | Device for recording repeatability of loads acting on structural elements |
| CN2879190Y (en) * | 2005-12-22 | 2007-03-14 | 辽宁工程技术大学 | Multi-sensor gas protrudent forecast instrument |
| CN2879128Y (en) * | 2006-03-18 | 2007-03-14 | 淄博华铭电器设备有限公司 | Electron pressure flux meter |
| CN201653635U (en) * | 2009-12-12 | 2010-11-24 | 淄博飞雁先行测控技术有限公司 | Special-purpose micro differential pressure transmitter used for gas detection |
| CN202133499U (en) * | 2011-07-08 | 2012-02-01 | 青岛智腾微电子有限公司 | Pressure transducer of sputtering film type |
| CN202501950U (en) * | 2012-04-01 | 2012-10-24 | 东莞瑞柯电子科技股份有限公司 | Circuit of an encoder type electronic pressure gage |
| CN202937357U (en) * | 2012-11-01 | 2013-05-15 | 中国第一汽车股份有限公司 | Pressure regulator circuit of LNG (liquefied natural gas) engine base on CAN (controller area network) communication |
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|---|---|
| CN103674356B (en) | 2015-09-09 |
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Granted publication date: 20150909 Termination date: 20211130 |