CN203337311U - Digital integrated pressure sensor - Google Patents
Digital integrated pressure sensor Download PDFInfo
- Publication number
- CN203337311U CN203337311U CN2013204246660U CN201320424666U CN203337311U CN 203337311 U CN203337311 U CN 203337311U CN 2013204246660 U CN2013204246660 U CN 2013204246660U CN 201320424666 U CN201320424666 U CN 201320424666U CN 203337311 U CN203337311 U CN 203337311U
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- pressure sensor
- chip microcomputer
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- digital
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Abstract
The utility model relates to a digital integrated pressure sensor which comprises a shell formed by a base and a top cover and comprises an elastic film arranged in the shell, a strain gauge, a single chip microcomputer, and a DSP digital signal processor. The sensor also comprises a digital display module which is arranged at the outer surface of the shell. The base and the top cover are fixed through a positioning pin and a screw. The elastic film is welded at the bottom of the base through argon arc welding. The strain gauge is connected with the elastic film. The DSP digital signal processor is connected with the single chip microcomputer which is connected with the digital display module. The top cover is provided with a power supply module. According to the digital integrated pressure sensor, a defect that an existing fluid pressure has poor sealing performance and a pressure value can not be observed in a working field is solved, at the same time, the voltage can be displayed in real time, and a network cable is connected to transmit voltage information remotely.
Description
Technical field
The utility model belongs to the pressure sensor technique field, especially a kind of digital integrated pressure sensor.
Background technology
Pressure transducer is widely used in many fields of daily life, comprises such as key areas such as medical instruments, and the application of the automobiles such as engine control and tire pressure monitoring, industrial process are controlled and the avionics industry.
On the one hand, piezoresistance sensor is more firmer than capacitive transducer, and the output signal of piezoresistance sensor be entered as direct ratio, good linearity is arranged; Another aspect, the capacitive transducer place more superior than pressure drag sensor is that the power of their consumption is less, but has nonlinear direct output signal, and more responsive to electromagnetic interference (EMI).
At present, the wide range fluid pressure sensor of widespread use all adopts the resistance-strain type structure, and after installation of sensors is on the Output pressure pipeline, pressure, through flexible sheet, strainometer and amplifying circuit, is finally exported with standard analog signal; Because analog signal accuracy itself is just low, in the signal transmission, easily be disturbed in addition, unstable, often need before use metering and demarcation repeatedly, use more loaded down with trivial details; The field personnel more is difficult to observe force value; Particularly working site needs the polytrope of collection signal, sometimes a plurality of control modules need gather same pressure signal, if sensor is exported a road signal, can not satisfy the demand far away, scene have to take to install many sensors on pressure line to guarantee production, and use other equipment coordination contacts, but the consistance of signal is difficult to be guaranteed; Take strong vibration between housing and base, screw is still well loosening, so sealing property can not be effectively guaranteed.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, has solved existing fluid pressure sensor poor sealing performance, can not observe the defect of force value in working site, and a kind of digital integrated pressure sensor is provided.
The utility model solves its technical matters and takes following technical scheme to realize:
A kind of digital integrated pressure sensor, comprise by base and top cover and form housing, be located at flexible sheet, strainometer, single-chip microcomputer and the DSP digital signal processor of enclosure interior, and the digital display module of being located at housing outer surface, described base and top cover are fixed by register pin and screw thread, described flexible sheet argon arc welding is in the bottom of base, described strainometer connects flexible sheet, described DSP digital signal processor connects single-chip microcomputer, described single-chip microcomputer connects the digital display module, and described top cover is provided with power module.
And, also being provided with compound interface on described housing, described compound interface connects single-chip microcomputer.
And described compound interface can also the interconnection network cable.
Advantage of the present utility model and good effect are:
1, the utility model adopts the core link of DSP digital signal processor effect analog signal figure, guaranteed that the output of super safety load is all quantized and without loss simulating signal from thermoelectron motion artifacts level to electric bridge, thus the basis of having established authenticity for the Digital Realization of measurement function.
2, the utility model system architecture compactness, function is single-minded, and externally annexation is simple, and host computer only need provide power supply can obtain measurement data; Improve the transparency of systematic survey application, reduced the technical requirement to the subsequent development personnel.
3, the utility model has solved existing fluid pressure sensor poor sealing performance, can not observe the defect such as force value in working site, can also show in real time to voltage interconnection network cable remote transmission voltage information simultaneously.
The accompanying drawing explanation
Fig. 1 is the structured flowchart of the utility model embodiment.
In figure, 1, housing; 2, base; 3, top cover; 4, flexible sheet; 5, strainometer; 6, single-chip microcomputer; 7, DSP digital signal processor; 8, digital display module; 9, register pin.
Embodiment
Below in conjunction with accompanying drawing, the utility model embodiment is further described:
As shown in Figure 1, a kind of digital integrated pressure sensor described in the utility model, comprise by base 2 and top cover 3 and form housing 1, be located at the flexible sheet 4 of housing 1 inside, strainometer 5, single-chip microcomputer 6 and DSP digital signal processor 7, and the digital display module 8 of being located at housing 1 outside surface, described base 2 and top cover 3 are fixed by register pin 9 and screw thread, described flexible sheet 4 argon arc weldings are in the bottom of base 2, described strainometer 5 connects flexible sheet 4, described DSP digital signal processor 7 connects single-chip microcomputer 6, described single-chip microcomputer 6 connects digital display module 8, described top cover 3 is provided with power module.Also be provided with compound interface on described housing 1, described compound interface connects single-chip microcomputer 6; Described compound interface can also the interconnection network cable.
In conjunction with Fig. 1, set forth the principle of work of this practicality:
The bridge measurement electronic module of strainometer of take is basis, adopt the dual-system structure of single-chip microcomputer and DSP digital signal processor, utilize the powerful numerical operation ability of DSP digital signal processor strainometer electric bridge output signal to be carried out to the processing such as digitizing adjustment compensation, utilize the flexible advantage of single-chip microcomputer to complete measurement result post-processed and relevant demonstration and output function.
This pressure transducer passes through externally filling silica gel sealing between web member, can effectively prevent from becoming flexible, and has fundamentally guaranteed the sealing in pressure transducer; The DSP digital signal processor is transformed into digital signal by measuring-signal; The digital display module can make field worker person observe at a glance force value, thereby controls easily execute-in-place, can exempt the strange land communication, has guaranteed the consistance of signal; Power supply, signal output compound interface also can be by numerical information by cable remote computer control chambers.
The utility model adopts the core link of DSP digital signal processor effect analog signal figure, guaranteed that the output of super safety load is all quantized and without loss simulating signal from thermoelectron motion artifacts level to electric bridge, thus the basis of having established authenticity for the Digital Realization of measurement function.It has solved existing fluid pressure sensor poor sealing performance, can not observe the defect such as force value in working site, can also show in real time to voltage interconnection network cable remote transmission voltage information simultaneously.
It is emphasized that; embodiment described in the utility model is illustrative; rather than determinate; therefore the utility model is not limited to the embodiment described in embodiment; every other embodiments that drawn according to the technical solution of the utility model by those skilled in the art, belong to the scope that the utility model is protected equally.
Claims (3)
1. a digital integrated pressure sensor, it is characterized in that: comprise by base and top cover and form housing, be located at flexible sheet, strainometer, single-chip microcomputer and the DSP digital signal processor of enclosure interior, and the digital display module of being located at housing outer surface, described base and top cover are fixed by register pin and screw thread, described flexible sheet argon arc welding is in the bottom of base, described strainometer connects flexible sheet, described DSP digital signal processor connects single-chip microcomputer, described single-chip microcomputer connects the digital display module, and described top cover is provided with power module.
2. digital integrated pressure sensor according to claim 1, is characterized in that: also be provided with compound interface on described housing, described compound interface connection single-chip microcomputer.
3. digital integrated pressure sensor according to claim 2, is characterized in that: all right interconnection network cable of described compound interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204246660U CN203337311U (en) | 2013-07-17 | 2013-07-17 | Digital integrated pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204246660U CN203337311U (en) | 2013-07-17 | 2013-07-17 | Digital integrated pressure sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203337311U true CN203337311U (en) | 2013-12-11 |
Family
ID=49705980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013204246660U Expired - Fee Related CN203337311U (en) | 2013-07-17 | 2013-07-17 | Digital integrated pressure sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203337311U (en) |
-
2013
- 2013-07-17 CN CN2013204246660U patent/CN203337311U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131211 Termination date: 20140717 |
|
| EXPY | Termination of patent right or utility model |