CN209513132U - Electronic pressure meter - Google Patents
Electronic pressure meter Download PDFInfo
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- CN209513132U CN209513132U CN201920481353.6U CN201920481353U CN209513132U CN 209513132 U CN209513132 U CN 209513132U CN 201920481353 U CN201920481353 U CN 201920481353U CN 209513132 U CN209513132 U CN 209513132U
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- signal conditioning
- pressure meter
- electronic pressure
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Abstract
The utility model discloses a kind of electronic pressure meters.Electronic pressure meter includes: numeral method dial plate, processor；Processor includes: main control module, baroceptor, communication module, electronic display module, the first signal conditioning module, second signal conditioning module；The output end of baroceptor connects the input terminal of the first signal conditioning module, the first input end of the output end connection main control module of the first signal conditioning module；The input terminal of the first output end connection second signal conditioning module of main control module, second signal conditioning module export analog signals and/or digital quantity signal.The utility model can be reduced because bring hydrogen disclosure risk is vibrated in aging at pipe joint, more safe and stable in layout, reliable.
Description
Technical field
The utility model belongs to meter for car technical field, more particularly, to a kind of electronic pressure meter, for firing
Expect the high-pressure monitoring of battery car.
Background technique
Fuel cell car is produced electricl energy using hydrogen as fuel, by hydrogen and oxygen by fuel cell, this process is not only
With high energy utilization efficiency, and emission only has water, does not have any pollution to environment.But a kind of new energy system
System will obtain promotion and application, and safety is that people should concern first.Due to the characteristic of hydrogen itself, such as reveal
Phenomena such as property, explosivity, hydrogen embrittlement, and make Vehicular hydrogen system there is some potential safety problemss.
Hydrogen Vapor Pressure instrument is mainly used for judging remaining amounts of hydrogen in gas cylinder, guarantees the normally travel of vehicle, works as pressure
Driver can be prompted to fill hydrogen when lower than certain value.The mode of connection of tradition machinery formula pressure gauge is as shown in Figure 1, at this stage
The instrument of hydrogen cell automobile monitoring storage pressure used is mechanical instrument, and physics is serially connected in check valve and flow-limiting valve
Between, connection is screwed up by quick coupling between pipeline and pipeline, but the stainless steel pipe vehicle of physical connection is in long run
It vibrates for a long time in the process, since the molecular weight of hydrogen is lower, will form hydrogen leakage.Therefore it is reduced for on-board hydrogen system non-
Necessary piping connection is particularly important, needs to find a kind of high-pressure for fuel cell car that can be reduced piping connection
Measuring instrument.
Utility model content
Aiming at the above defects or improvement requirements of the prior art, the utility model provides a kind of electronic pressure meter,
Purpose is multiple by the way that a kind of mode of connection that electronic high-voltage pressure monitoring instrument solves existing machinery formula pressure gauge is arranged
Miscellaneous the technical issues of easily causing hydrogen to reveal.
To achieve the above object, according to the one aspect of the utility model, a kind of electronic pressure meter is provided, comprising:
Numeral method dial plate, processor；
The processor includes: main control module, communication module, electronic display module, the first signal conditioning module, the second letter
Number conditioning module；
The output end of first signal conditioning module connects the first input end of the main control module, first signal
Conditioning module has baroceptor connectivity port；
First output end of the main control module connects the input terminal of the second signal conditioning module, the second signal
Conditioning module is for exporting analog signals and/or digital quantity signal；
The main control module and the communication module interconnect, and the communication module is interacted with the electronic display module
Connection.
Preferably, the processor further includes power module, and the output end of the power module connects the main control module
The second input terminal, the input voltage of the power module is 9V~36V.
Preferably, the power module is voltage stabilizing chip.
Preferably, the electronic display module includes the first range display module and/or the second range display module.
Preferably, the processor further includes the storage chip and clock core interconnected respectively with the main control module
Piece.
Preferably, the processor further includes distinguishing respectively with the second output terminal of the main control module and third output end
The alarm module and analog I/O module of connection.
Preferably, the numeral method dial plate is liquid crystal or LCD screen.
In general, it can obtain down the above technical solutions conceived by the present invention are compared with the prior art,
Column the utility model has the advantages that
A kind of high-pressure monitoring the utility model proposes new electronic pressure meter for fuel cell car, electricity
Minor pressure gauge realizes accurately digitlization display.
The utility model proposes this electronic pressure meter without being serially connected in pipeline, can reduce at pipe joint because always
Change vibration bring hydrogen disclosure risk, and only need to connect with the high-pressure pressure sensor in general on-board hydrogen system, is not necessarily to volume
Outer increase cost, it is obvious more safe and stable, reliable in the layout of hydrogen system with former mechanical instrument.
Detailed description of the invention
Fig. 1 is the mode of connection schematic diagram of tradition machinery formula pressure gauge；
Fig. 2 is the mode of connection schematic diagram of electronic pressure meter；
Fig. 3 is the numeral method dial plate schematic diagram of electronic pressure meter；
Fig. 4 is the liquid crystal or LCD screen display schematic diagram of electronic pressure meter；
Fig. 5 is the operation principle schematic diagram that electronic pressure meter is monitored for the high-pressure of fuel cell car.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.In addition, institute in the various embodiments of the present invention described below
The technical characteristic being related to can be combined with each other as long as they do not conflict with each other.
The utility model provides a kind of electronic pressure meter, as shown in Fig. 2, the electronic pressure meter and on-board hydrogen system
High-pressure pressure sensor connection in system.
Electronic pressure meter includes: numeral method dial plate, processor.
Electronic pressure meter processor includes: main control module, communication module, electronic display module, the first signal condition mould
Block, second signal conditioning module；Electronic pressure meter processor with bleed pressure transmitter for connecting, for detecting in gas cylinder
Pressure.
The first input end of the output end connection main control module of first signal conditioning module, the first signal conditioning module
With baroceptor connectivity port, the port with the baroceptor in bleed pressure transmitter for connecting.
The input terminal of the first output end connection second signal conditioning module of the main control module, second signal conditioning module
For exporting analog signals and/or digital quantity signal.
The main control module and communication module interconnect, and communication module and electronic display module interconnect.
The main control module is usually micro-control unit (MCU), thus the core of electronic pressure meter, the first signal tune
The voltage or current signal that baroceptor is usually high-pressure pressure sensor output by reason module are by signal condition filtering, just
The pressure value is identified and read in MCU.
The Hydrogen Vapor Pressure value that MCU is read carries out output digital quantity after second signal conditioning module in the form of PWM pulse wave
Or analog quantity.
The output of analog quantity/digital quantity signal can also export simultaneously, according to host computer receive data type selection simulation or
Number is attached, and host computer, which receives, to be sent to bridge instrumentation for the value by parsing after the data information and show.
The data source that electronic display module is shown in electronic pressure meter acquires pressure sensor data in MCU, passes through
After analog-to-digital conversion, the data handled well are encoded according to screen display format, this process is completed inside MCU, by communicating mould
Block sends the data to LCD screen in the form of parallel communications or LED charactrons are shown.
Air-tightness is good in the case of tradition machinery formula instrument will accomplish oil-free, High Voltage, and the splendid technology difficulty of sensitivity
It is larger, and mechanical instrument is usually to be serially connected among check valve and flow-limiting valve pipeline, but due to vehicle long-time ride
Etc. factors, because the lighter joint of hydrogen quality often exist hydrogen leakage risk.And the utility model proposes measuring instrument be
Electronic pressure meter can be reduced because bring hydrogen disclosure risk is vibrated in aging at pipe joint, and only without being serially connected in pipeline
It need to be connect with the baroceptor in general on-board hydrogen system, increase cost without additional, with former mechanical instrument in hydrogen system
It is obvious more safe and stable, reliable in the layout of system.
The electronic pressure gage processor further includes power module, and the output end of power module connects the second of main control module
Input terminal, the input voltage of power module are 9V~36V.
Power module is voltage stabilizing chip, usually LM2596HVS-5.0 chip or LM2596HVS-3.3 chip, output
Voltage is respectively 5.0V or 3.3V.
Such power module can be by passenger car or 12VDC the or 24VDC power voltage step down of the provided power supply of commercial vehicle to MCU
5.0V needed for module or 3.3VDC meets IC operating voltage requirements, keeps such electronic pressure meter scope of application wider, riding
Vehicle or commercial vehicle can be used.
The electronic display module of the electronic pressure gage processor includes that the first range display module and/or the second range are aobvious
Show module；Wherein, the first range display module is 0~60MPa, and the second range display module is 0~90MPa, and if only if master control
The second range display module is enabled by communication module when the detection pressure of module acquisition is greater than 35MPa.
It is corresponding respectively using the gas cylinder of the gas cylinder of 35MPa and 70MPa to be designed as double-range, when hydrogen cylinder selects 35MPa
When, the first range display module is enabled, when hydrogen cylinder selects 70MPa, the second range display module is enabled, such as the institute of Fig. 3~4
Show, such double-range instrument can further respectively indicate the data and of the first range display module by Internal and external cycle on instrument board
The data of two range display modules.
The Hydrogen Vapor Pressure of a compatible two platforms of table shows, the hardware circuit portion of such double-range pressure monitoring instrument
Dividing can accomplish mutually to unify with mechanical cover part, and traditional mechanical instrument need to be developed in two times, to reduce product
Cost, the scope of application are wider.
Wherein, the analog signals of second signal conditioning module output are 0~5V of first voltage range, second voltage range
It is a kind of in 0~10V or first 4~20mA of current signal；Second signal conditioning module output digital quantity signal voltage magnitude be
One of 5V, 12V or 24V.
The compatible passenger car of a variety of current or voltage output areas or the multiple platforms of commercial vehicle.
The electronic pressure gage processor further includes the storage chip and clock chip interconnected respectively with main control module.
Storage chip, clock chip are used for MCU storage data and program, and being also convenient for can vehicle is placed for a long time
Accurate display pressure.
After bottle-jack valve is closed in traditional mechanical instrument, the high pressure hydrogen remained in stainless steel tube can escape, vehicle
It places mechanical instrument for a long time to be possible to read the possibility that pressure value is 0MPa, but the electronic type measuring instrument of the utility model has
Storage chip, therefore have memory storage function, instrument can be allowed accurately to show very much pressure by the processing in program, essence
Degree will also be much higher than mechanical instrument.
The serial communication in the form of CAN communication of the communication module and main control module of the electronic pressure gage processor connects；It is logical
Believe that carrying out master and slave facility information interaction using serial traffic form in module uses, vehicle-carrying communication form is usually CAN.
The electronic pressure gage processor further includes distinguishing respectively with the second output terminal of main control module and third output end
The alarm module and analog I/O module of connection；Alarm module can be used for reminding driver and passenger, vehicle have occurred hydrogen leakage accident or
Storage pressure is high or gas cylinder hydrogen deficient needs plus hydrogen, further can do different information alerts according to different stage；Digital I/O mould
Block is used under emergency work condition turn off other related auxiliaries of such as bottle-jack valve of hydrogen system.
High-pressure of the electronic pressure meter of the utility model for fuel cell car monitors, and is such as applied to hydrogen pressure
Power monitoring, working principle are as shown in Figure 5；Specific work process is as follows:
First signal conditioning module port of electronic pressure meter connects baroceptor, communicates mould in electronic pressure meter
Block interconnects host computer, and host computer can be entire car controller (HCU), fuel battery engines controller (FCU) or hydrogen system
Unite one of Management Controller (VCU).
Baroceptor acquires Hydrogen Vapor Pressure data, is output to the first signal conditioning module, and the first signal conditioning module will
The voltage or current signal of baroceptor output are filtered by signal condition, are then output to main control module.
Main control module, that is, MCU identification signal and after reading Hydrogen Vapor Pressure value, can be output to the second tune by the first output end
Module is managed, Hydrogen Vapor Pressure value is zoomed into the voltage signal or current signal of standard by the second conditioning module by signal conditioning circuit
Then the data type that can be read according to host computer selects output analog signals and/or digital quantity signal respectively；
After main control module reads Hydrogen Vapor Pressure value, electronic display is transmitted data in the form of parallel communications by communication module
Show module, while can be judged and control alarm module and analog I/O module to operate in a manner of preset according to Hydrogen Vapor Pressure value, such as
Preset pressure value reaches a certain threshold value, and alarm module flashing is sounded and analog I/O module control emergent evacuating device starting, thus
It reminds user and reduces density of hydrogen, main control module can realize information exchange with serial traffic form and host computer in the process.
As it will be easily appreciated by one skilled in the art that the above is only the preferred embodiment of the utility model only, not
To limit the utility model, any modification made within the spirit and principle of the present invention, equivalent replacement and change
Into etc., it should be included within the scope of protection of this utility model.
Claims (7)
1. a kind of electronic pressure meter characterized by comprising numeral method dial plate, processor；
The processor includes: main control module, communication module, electronic display module, the first signal conditioning module, second signal tune
Manage module；
The output end of first signal conditioning module connects the first input end of the main control module, first signal condition
Module has baroceptor connectivity port；
First output end of the main control module connects the input terminal of the second signal conditioning module, the second signal conditioning
Module is for exporting analog signals and/or digital quantity signal；
The main control module and the communication module interconnect, and the communication module interacts company with the electronic display module
It connects.
2. a kind of electronic pressure meter as described in claim 1, which is characterized in that the processor further includes power module,
The output end of the power module connects the second input terminal of the main control module, the input voltage of the power module be 9V~
36V。
3. a kind of electronic pressure meter as claimed in claim 2, which is characterized in that the power module is voltage stabilizing chip.
4. a kind of electronic pressure meter as described in claim 1, which is characterized in that the electronic display module includes the first amount
Journey display module and/or the second range display module.
5. a kind of electronic pressure meter as described in claim 1, which is characterized in that the processor further include respectively with it is described
The storage chip and clock chip of main control module interactive connection.
6. a kind of electronic pressure meter as described in claim 1, which is characterized in that the processor further include respectively with it is described
The alarm module and analog I/O module that the second output terminal and third output end of main control module are separately connected.
7. a kind of electronic pressure meter as described in claim 1, which is characterized in that the numeral method dial plate be liquid crystal or
LCD screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920481353.6U CN209513132U (en) | 2019-04-11 | 2019-04-11 | Electronic pressure meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920481353.6U CN209513132U (en) | 2019-04-11 | 2019-04-11 | Electronic pressure meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209513132U true CN209513132U (en) | 2019-10-18 |
Family
ID=68188866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920481353.6U Active CN209513132U (en) | 2019-04-11 | 2019-04-11 | Electronic pressure meter |
Country Status (1)
| Country | Link |
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| CN (1) | CN209513132U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112964420A (en) * | 2021-02-24 | 2021-06-15 | 北京康斯特仪表科技股份有限公司 | Pressure calibration device |
-
2019
- 2019-04-11 CN CN201920481353.6U patent/CN209513132U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112964420A (en) * | 2021-02-24 | 2021-06-15 | 北京康斯特仪表科技股份有限公司 | Pressure calibration device |
| CN112964420B (en) * | 2021-02-24 | 2023-09-22 | 北京康斯特仪表科技股份有限公司 | Pressure calibration device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210330 Address after: 266000 Room 516, building 4, 187 Jinshui Road, Licang District, Qingdao City, Shandong Province Patentee after: Haizhuo power (Qingdao) Energy Technology Co.,Ltd. Address before: Room 03, Shang 06, 1-2 / F, commercial building 1, Vanke Jiayuan phase I, No.12, Guanggu 1st Road, Donghu New Technology Development Zone, Wuhan, Hubei 430000 Patentee before: Wuhan Zhiwei Automobile Technology Co.,Ltd. |
|
| TR01 | Transfer of patent right |