CN205538095U - Pressure check gauge - Google Patents
Pressure check gauge Download PDFInfo
- Publication number
- CN205538095U CN205538095U CN201620339155.2U CN201620339155U CN205538095U CN 205538095 U CN205538095 U CN 205538095U CN 201620339155 U CN201620339155 U CN 201620339155U CN 205538095 U CN205538095 U CN 205538095U
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- China
- Prior art keywords
- pressure
- power supply
- input
- outfan
- microcontroller
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- 238000005259 measurement Methods 0.000 claims abstract description 19
- 238000004891 communication Methods 0.000 claims abstract description 9
- 239000004973 liquid crystal related substance Substances 0.000 claims description 3
- 230000003321 amplification Effects 0.000 claims description 2
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 2
- 230000011218 segmentation Effects 0.000 claims description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005039 chemical industry Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
- 230000001702 transmitter Effects 0.000 description 1
Abstract
The utility model provides a pressure check gauge, including the pressure casing, the bottom intercommunication of pressure casing has the pressure pipe, the pressure pipe has the external screw thread that is used for with external pressure source threaded connection, the pressure pipe with the inside fixed mounting in crossing position of pressure casing has pressure sensor, it has microcontroller, electric signal measurement unit and built -in temperature sensor to go back fixed mounting in the shell of pressure casing, the conch wall of pressure casing still is provided with pressure switch signal input terminal, electrical signal input output terminal, communication interface, display screen and button. The utility model provides a pressure check gauge has following advantage: a powerful's portable professional pressure check gauge, have that the function is various, an advantage of simple structure, sturdy and durable, high stability, high reliability.
Description
Technical field
This utility model belongs to technology of instrument and meter field, is specifically related to one and had both possessed pressure checking measurement merit
Can, possess again the pressure testers of electrical signal detection function.
Background technology
Manometer used in the field such as commercial production, pressure measxurement, in use for some time,
Need it is verified, so that it is determined that this manometer is the most accurate.Pressure testers is i.e. verification pressure
Instrument instrument the most accurately.
But, existing pressure testers, generally there is function singleness, baroque deficiency.
Utility model content
The defect existed for prior art, this utility model provides a kind of pressure testers, can effectively solve
The problems referred to above.
The technical solution adopted in the utility model is as follows:
This utility model provides a kind of pressure testers, and including pressure casing, the bottom of described pressure casing connects
Being connected with manometer tube, described manometer tube has the external screw thread for threadeding with external pressure source；Described pressure
Pipe is installed with pressure transducer, by described pressure sensing inside the intersection location of described pressure casing
Device, is divided into independent sealed chamber by described manometer tube and described pressure casing, and, described pressure sensing
The pressure measxurement of device facing to the inner chamber of described manometer tube, the pressure signal output face court of described pressure transducer
Inner chamber to described pressure casing；
It addition, be also installed with in the shell of described pressure casing microcontroller, electric signal measurement unit and
Built-in temperature sensor；The shell wall of described pressure casing is additionally provided with pressure switch signal input terminal, telecommunications
Number input and output terminal, communication interface, display screen and button；The outfan of described pressure transducer and described
The outfan of signal of telecommunication input and output terminal is connected respectively to the input of described electric signal measurement unit；Described
The outfan of electric signal measurement unit is connected to the input of described microcontroller；Described pressure switch signal is defeated
Enter terminal and described built-in temperature sensor is connected respectively to the input of described microcontroller；Described microcontroller
The outfan of device respectively with described communication interface, described display screen and described by bonded.
Preferably, described electric signal measurement unit includes the A/D change-over circuit of series connection, signal amplification circuit and defeated
Enter protection circuit.
Preferably, described display screen is segment liquid crystal display screen.
Preferably, power supply circuits are also included；Described power supply circuits include: power supply/charge control circuit, charging
Interface, rechargeable battery and DC24V power supply；
Described power supply/charge control circuit has two inputs and 1 outfan；Described power supply/charge controls
1st input of circuit is connected to described microcontroller；2nd input of described power supply/charge control circuit is even
Receive described charging inlet；The outfan of described power supply/charge control circuit is connected to the defeated of described rechargeable battery
Enter end；Described rechargeable battery outfan is connected respectively to the input of described DC24V power supply, described microcontroller
The feeder ear of device, the feeder ear of described pressure transducer and the feeder ear of described electric signal measurement unit；Described
The outfan of DC24V power supply is connected to the feeder ear of described signal of telecommunication input and output terminal.
Preferably, described power supply circuits also include battery temperature sensor；Described battery temperature sensor is installed
In the surface of described rechargeable battery, for detecting the surface temperature of described rechargeable battery, described battery temperature passes
The outfan of sensor is connected to described microcontroller.
Preferably, described power supply circuits also include power switch key；One end of described power switch key is connected to
Described microcontroller；The other end of described power switch key is connected to described power supply/charge control circuit.
Preferably, buzzer is also included；Described buzzer is fixedly installed in the shell of described pressure casing；Institute
State buzzer to be connected with described microcontroller.
The pressure testers that this utility model provides has the advantage that
It is a powerful portable specialty pressure testers, there is diverse in function, simple in construction, heavily fortified point
Gu durable, the advantage of high stability, high reliability.
Accompanying drawing explanation
The structural representation of the pressure testers that Fig. 1 provides for this utility model.
Detailed description of the invention
In order to make this utility model be solved the technical problem that, technical scheme and beneficial effect clearer,
Below in conjunction with drawings and Examples, this utility model is further elaborated.Should be appreciated that herein
Described specific embodiment, only in order to explain this utility model, is not used to limit this utility model.
In conjunction with Fig. 1, this utility model provides a kind of pressure testers, including pressure casing, the end of pressure casing
Portion is communicated with manometer tube, and manometer tube has the external screw thread for threadeding with external pressure source；Manometer tube with
It is installed with pressure transducer, by pressure transducer, by manometer tube inside the intersection location of pressure casing
It is divided into independent sealed chamber with pressure casing, and, the pressure measxurement of pressure transducer is facing to manometer tube
Inner chamber, the pressure signal output face of pressure transducer is towards the inner chamber of pressure casing；
It addition, be also installed with in the shell of pressure casing in microcontroller, electric signal measurement unit and machine
Temperature sensor；The shell wall of pressure casing is additionally provided with pressure switch signal input terminal, the signal of telecommunication inputs defeated
Go out terminal, communication interface, display screen and button；The outfan of pressure transducer and signal of telecommunication input/output terminal
The outfan of son is connected respectively to the input of electric signal measurement unit；The outfan of electric signal measurement unit is even
Receiving the input of microcontroller, wherein, electric signal measurement unit includes the A/D change-over circuit of series connection, signal
Amplifying circuit and input protection circuit.Pressure switch signal input terminal and built-in temperature sensor connect respectively
Input to microcontroller；The outfan of microcontroller respectively with communication interface, display screen and by bonded.
Wherein, display screen can use LCDs.Also include buzzer；Buzzer is fixedly installed in pressure casing
Shell in；Buzzer is connected with microcontroller.
The pressure testers that this utility model provides, its operation principle is:
When needs carry out pressure checking to certain manometer, external pressure source is threaded connection mode
It is installed to the pressure connection of pressure testers；Then, pressure when being pressurizeed by pressure source, within manometer tube
Force transducer uses the pressure transducer of high stability, and it collects the pressure signal of analog quantity, analog quantity
Pressure signal, after the A/D of low-function 24 changes, obtains the pressure signal of digital quantity, then puts through signal
After great, it is input to microcontroller；Microcontroller, by being analyzed the pressure signal received, is pressed
Force value, and be shown in display screen；
The pressure testers provided due to this utility model, for high-precision instrument.Therefore, can be to low precision
The force value that Pressure gauge collects verifies.
It is connected owing to pressure testers is threaded connection mode with external pressure source, there is easily installation, operation
Advantage easily.Further, since pressure transducer and signal of telecommunication input and output terminal share electric signal measurement list
Unit, can simplify pressure testers circuit structure, reduces cost.
The pressure testers that this utility model provides, in addition to the function with pressure checking, also has following auxiliary
Assist energy:
(1) by signal of telecommunication input and output terminal, voltage x current value can be measured.Specifically, can measure (-30～
30) d. c. voltage signal of V；The current signal of (-30～30) mA can be measured.
(2) by pressure switch signal input terminal, switching signal can be measured.
(3) by built-in temperature sensor, built-in temperature can be measured.
(4) communication interface can use RS232 interface, can be with computer communication, transmission measurement data etc..
(5) pressure overload warning function: when pressure measuring value exceedes the 120% of range, buzzer can have joint
That plays sends prompt tone.
(6) display function: use duplicate rows segmentation FSTN liquid crystal display screen, the ash end, white backlight, full 6 displays.
(7) power supply circuits
This utility model the most also includes power supply circuits；Power supply circuits include: power supply/charge control circuit, charging
Interface, rechargeable battery and DC24V power supply；
Power supply/charge control circuit has two inputs and 1 outfan；The 1st of power supply/charge control circuit
Input is connected to microcontroller；2nd input of power supply/charge control circuit is connected to charging inlet；Power supply
The outfan of/charging control circuit is connected to the input of rechargeable battery；Rechargeable battery outfan is connected respectively to
The input of DC24V power supply, the feeder ear of microcontroller, the feeder ear of pressure transducer and electric signal measurement
The feeder ear of unit；The outfan of DC24V power supply is connected to the feeder ear of signal of telecommunication input and output terminal.Supply
Electricity circuit also includes power switch key；One end of power switch key is connected to microcontroller；Power switch key
The other end is connected to power supply/charge control circuit.
It addition, power supply circuits also include battery temperature sensor；Battery temperature sensor is installed on rechargeable battery
Surface, for detecting the surface temperature of rechargeable battery, the outfan of battery temperature sensor is connected to micro-control
Device processed.By installing battery temperature sensor, the safety that battery uses can be improved.
As can be seen here, the pressure testers that this utility model provides, is a powerful portable specialty
Pressure testers, have diverse in function, simple in construction, sturdy and durable, high stability, high reliability excellent
Point, both can enter pointer pressure, pressure transmitter, pressure transducer, sphygomanometer and pressure switch
Row calibration operation, it is also possible to be used alone as a high-precision pressure instrument.Therefore, can be widely applied to
The industries such as oil, electric power, chemical industry, metallurgy, metering, Aero-Space, teaching and railway.
The above is only preferred implementation of the present utility model, it is noted that for the art
For those of ordinary skill, on the premise of without departing from this utility model principle, it is also possible to make some improvement
And retouching, these improvements and modifications also should regard protection domain of the present utility model.
Claims (7)
1. a pressure testers, it is characterised in that include that pressure casing, the bottom of described pressure casing connect
Being connected with manometer tube, described manometer tube has the external screw thread for threadeding with external pressure source；Described pressure
Pipe is installed with pressure transducer, by described pressure sensing inside the intersection location of described pressure casing
Device, is divided into independent sealed chamber by described manometer tube and described pressure casing, and, described pressure sensing
The pressure measxurement of device facing to the inner chamber of described manometer tube, the pressure signal output face court of described pressure transducer
Inner chamber to described pressure casing；
It addition, be also installed with in the shell of described pressure casing microcontroller, electric signal measurement unit and
Built-in temperature sensor；The shell wall of described pressure casing is additionally provided with pressure switch signal input terminal, telecommunications
Number input and output terminal, communication interface, display screen and button；The outfan of described pressure transducer and described
The outfan of signal of telecommunication input and output terminal is connected respectively to the input of described electric signal measurement unit；Described
The outfan of electric signal measurement unit is connected to the input of described microcontroller；Described pressure switch signal is defeated
Enter terminal and described built-in temperature sensor is connected respectively to the input of described microcontroller；Described microcontroller
The outfan of device respectively with described communication interface, described display screen and described by bonded.
Pressure testers the most according to claim 1, it is characterised in that described electric signal measurement unit
A/D change-over circuit, signal amplification circuit and input protection circuit including series connection.
Pressure testers the most according to claim 1, it is characterised in that described display screen is segmentation liquid
Crystal display screen.
Pressure testers the most according to claim 1, it is characterised in that also include power supply circuits；Institute
State power supply circuits to include: power supply/charge control circuit, charging inlet, rechargeable battery and DC24V power supply；
Described power supply/charge control circuit has two inputs and 1 outfan；Described power supply/charge controls
1st input of circuit is connected to described microcontroller；2nd input of described power supply/charge control circuit is even
Receive described charging inlet；The outfan of described power supply/charge control circuit is connected to the defeated of described rechargeable battery
Enter end；Described rechargeable battery outfan is connected respectively to the input of described DC24V power supply, described microcontroller
The feeder ear of device, the feeder ear of described pressure transducer and the feeder ear of described electric signal measurement unit；Described
The outfan of DC24V power supply is connected to the feeder ear of described signal of telecommunication input and output terminal.
Pressure testers the most according to claim 4, it is characterised in that described power supply circuits also include
Battery temperature sensor；Described battery temperature sensor is installed on the surface of described rechargeable battery, is used for detecting
The surface temperature of described rechargeable battery, the outfan of described battery temperature sensor is connected to described microcontroller.
Pressure testers the most according to claim 4, it is characterised in that described power supply circuits also include
Power switch key；One end of described power switch key is connected to described microcontroller；Described power switch key
The other end is connected to described power supply/charge control circuit.
Pressure testers the most according to claim 1, it is characterised in that also include buzzer；Described
Buzzer is fixedly installed in the shell of described pressure casing；Described buzzer is connected with described microcontroller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620339155.2U CN205538095U (en) | 2016-04-21 | 2016-04-21 | Pressure check gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620339155.2U CN205538095U (en) | 2016-04-21 | 2016-04-21 | Pressure check gauge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205538095U true CN205538095U (en) | 2016-08-31 |
Family
ID=56796444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620339155.2U Active CN205538095U (en) | 2016-04-21 | 2016-04-21 | Pressure check gauge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205538095U (en) |
-
2016
- 2016-04-21 CN CN201620339155.2U patent/CN205538095U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |