CN202141550U - Digital pressure meter - Google Patents
Digital pressure meter Download PDFInfo
- Publication number
- CN202141550U CN202141550U CN201120222495U CN201120222495U CN202141550U CN 202141550 U CN202141550 U CN 202141550U CN 201120222495 U CN201120222495 U CN 201120222495U CN 201120222495 U CN201120222495 U CN 201120222495U CN 202141550 U CN202141550 U CN 202141550U
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- China
- Prior art keywords
- digital
- electronic chip
- circuit
- display screen
- shell
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model provides a digital pressure meter including a shell. The shell is equipped with a power source, an electronic chip. A digital display screen buttons are arranged on a front face of the shell. A pressure sensor is arranged in the bottom of the shell. The pressure sensor and the digital display screen connect with a circuit having the electronic chip separately. The electronic chip connects with a circuit having the power source. The electronic chip also connects with a circuit having the buttons. A charging hole is arranged in the back of the shell. The charging hole connects with the circuit having the power supply. In the utility model, a piezoresistive sensor having superb stability is adopted as a sensing element, and the stable digital display screen is adopted for displaying. The digital pressure meter has advantages of high precision, water tightness, anti-explosion and the like. And the digital pressure meter has no need for zero-setting. The digital pressure meter can be applied to various rescue and relief work of fire fighting departments and has strong practicality.
Description
Technical field
The utility model relates to a kind of tensimeter, particularly relates to a kind of digital pressure gauge.
Background technology
The digital pressure gauge of pressure display is one of positive pressure respirator visual plant in supporting.Be used for the on-the-spot gas cylinder internal pressure surplus of in time observing of rescue personnel, guarantee the main Displaying Meter of personnel's safe escape hazardous area, traditional digital pressure gauge is continued to use mechanical pressure gauge and is shown; In the environment that smog is many a little less than light, not only be difficult to discern concrete force value, and sensitivity; Visibility, the error range and the general sticking of needle of mechanical indicator table, bouncing pilotage; Common faults such as mechanical devices ordinary wear and tear, totally unfavorable to disaster relief scene, had a strong impact on the quality assurance and the security of rescue.
The utility model content
The technical matters that the utility model will solve provides the digital pressure gauge that a kind of error is little, visibility is high.
For solving the problems of the technologies described above, the utility model provides a kind of digital pressure gauge, comprises housing; It is characterized in that: the set inside of said housing has power supply, electronic chip; The front of said housing is provided with digital display screen and button, and the bottom of said housing is provided with pressure transducer, and said pressure transducer is connected with said electronic chip circuit respectively with said digital display screen; Said electronic chip is connected with said power circuit; Said electronic chip also is connected with said key circuit, and the back side of said housing is provided with the charging hole, and said charging hole is connected with said power circuit.
As preferably, said electronic chip is a single-chip microcomputer.
Further preferred, said digital display screen is a LCD display.
Further preferred, said pressure transducer is a piezoresistive pressure sensor.
The utlity model has following useful technique effect: the piezoresistive pressure sensor that has adopted excellent stability is as sensitive element; Stable digital display screen shows; Have precision height, waterproof, explosion-proof, need not advantages such as zeroing; Can be applicable in the work such as various rescue and relief works and rescue of fire department, very practical.
Description of drawings
Fig. 1 is the Facad structure synoptic diagram of the utility model digital pressure gauge;
Fig. 2 is the workflow diagram of the utility model;
Among the figure: 1-housing, 2-pressure transducer, 3-electronic chip, 4-power supply, 5-digital display screen, 6-button, the 7-hole of charging.
Embodiment
Be elaborated below in conjunction with the preferred implementation of accompanying drawing to the utility model.
Embodiment:
As shown in Figure 1, a kind of digital pressure gauge comprises housing 1, and the set inside of said housing 1 has power supply 4, electronic chip 3, and said electronic chip 3 is a single-chip microcomputer.The front of said housing 1 is provided with digital display screen 5 and button 6, and said digital display screen 5 is a LCD display.The bottom of said housing 1 is provided with pressure transducer 2, and said pressure transducer 2 is a piezoresistive pressure sensor.Said pressure transducer 2 is connected with said electronic chip 3 circuit respectively with said digital display screen 5; Said electronic chip 3 is connected with said power supply 4 circuit; Said electronic chip 3 also is connected with said button 6 circuit; The back side of said housing 1 is provided with charging hole 7, and said charging hole 7 is connected with said power supply 4 circuit.
As shown in Figure 2, Fig. 2 is the workflow diagram of the utility model.The detailed process of the utility model work is: the pressure-sensitive diaphragm that passes to pressure transducer 2 through pressure interface; Pressure transducer 2 is changed the electric signal of induction through processing and amplifying, V/A; Sending electronic chip 3 (single-chip microcomputer) by signal wire to through circuit handles: display digit, the input and output of CS amount are set and digital quantity output is provided; Finally show by digital display screen 5, thus the process of realization pressure display.In the utility model, amplifying circuit amplifies sensor output signal and converts digital signal to, after single-chip microcomputer is handled by liquid crystal display.
Need to prove at last; The above is merely the preferred embodiment of the utility model; Rather than, anyly be equal to replacement or corresponding improvement to what the utility model technical characterictic did to the qualification of the utility model technical scheme, still within the protection domain of the utility model.
Claims (4)
1. digital pressure gauge; Comprise housing, it is characterized in that: the set inside of said housing has power supply, electronic chip, and the front of said housing is provided with digital display screen and button; The bottom of said housing is provided with pressure transducer; Said pressure transducer is connected with said electronic chip circuit respectively with said digital display screen, and said electronic chip is connected with said power circuit, and said electronic chip also is connected with said key circuit; The back side of said housing is provided with the charging hole, and said charging hole is connected with said power circuit.
2. digital pressure gauge as claimed in claim 1 is characterized in that: said electronic chip is a single-chip microcomputer.
3. digital pressure gauge as claimed in claim 1 is characterized in that: said digital display screen is a LCD display.
4. digital pressure gauge as claimed in claim 1 is characterized in that: said pressure transducer is a piezoresistive pressure sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120222495U CN202141550U (en) | 2011-06-28 | 2011-06-28 | Digital pressure meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120222495U CN202141550U (en) | 2011-06-28 | 2011-06-28 | Digital pressure meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202141550U true CN202141550U (en) | 2012-02-08 |
Family
ID=45552605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120222495U Expired - Lifetime CN202141550U (en) | 2011-06-28 | 2011-06-28 | Digital pressure meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202141550U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110926688A (en) * | 2019-11-21 | 2020-03-27 | 歌尔股份有限公司 | Air pressure detection method and system |
-
2011
- 2011-06-28 CN CN201120222495U patent/CN202141550U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110926688A (en) * | 2019-11-21 | 2020-03-27 | 歌尔股份有限公司 | Air pressure detection method and system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120208 |
|
| CX01 | Expiry of patent term |