CN202471336U - Portable handheld pressure tester - Google Patents
Portable handheld pressure tester Download PDFInfo
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- CN202471336U CN202471336U CN2012200890851U CN201220089085U CN202471336U CN 202471336 U CN202471336 U CN 202471336U CN 2012200890851 U CN2012200890851 U CN 2012200890851U CN 201220089085 U CN201220089085 U CN 201220089085U CN 202471336 U CN202471336 U CN 202471336U
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Abstract
The utility model relates to a portable handheld pressure tester, which is characterized by comprising four current type pressure sensors, four cable way interfaces, a signal conditioning module, an A/D transformation module, a data processing module, a central processing unit, a data storage module, a man-machine interaction module and a battery energy module, wherein pressure signals collected by the four current type pressure sensors are inputted into the signal conditioning module respectively through the four cable way interfaces, transformed into DC voltage signals, and then inputted into the data processing module through the A/D transformation module for being subjected to range and unit conversion, converted signals are inputted into the central processing unit, and the processed signals are stored into the data storage module; and the output end of the central processing unit is connected with the man-machine interaction module for carrying out data display, and the input end of the central processing unit is also connected with the battery energy module. The portable handheld pressure tester can be widely applied to online detection and data recording of various high-power vehicle speed changing box hydraulic systems.
Description
Technical field
The utility model relates to a kind of pressure tester, particularly about a kind of portable hand-held pressure tester that is used for High-Powered Vehicle wheel box pressure signal test.
Background technology
At present; The wet clutch wheel box is used widely on numerous endless-track vehicles and engineering machinery; This wheel box is an organic synthesis mechanical, electrical, liquid, has that hydrodynamic drive, hydraulic stepless turn to, technical characterstics such as power shifting and fluid drive, and its telotism, technical merit are advanced; Along with the quick raising of the wheel box performance and the level of IT application, failure rate also strengthens thereupon.There is a large amount of hydraulic oil media wet clutch wheel box inside; This oil be the lubricating oil of gear, bearing, again be the work of cooling oil, clutch coupling of friction disc with oil, or steering hydraulic oil, and different systems is just also different with the position oil pressure.So oil pressure is one of key character parameter that characterizes wet clutch wheel box different parts and functional part.Carry out wet clutch wheel box status monitoring and fault diagnosis research; At first need monitor the pressure height and the Changing Pattern at different system and position; And then carry out and analyse in depth and fault diagnosis research, pressure test is the important technology approach that carries out wet clutch wheel box status monitoring and fault diagnosis.
Mechanical hook-up status monitoring, signal testing technical development were rapid in recent years, and the means of research and method are maked rapid progress, and have particularly obtained better effects in mechanical fault diagnosis, the research and development of status monitoring instrument in the field.Yet; For this complicated kinematic train of high-power tracked vehicle wet clutch wheel box; Also not seeing has special portable pressure testing tool, though many special pressure test equipments are arranged both at home and abroad, there is following shortcoming in these equipment: 1, device junction and wheel box pressure-measuring-point interface do not match; Need specialized designs processing crossover sub, install and use inconvenience.2, a simple displaying instantaneous pressure numerical values recited does not write down the pressure change procedure, more can not provide the pressure variation rule curve, does not satisfy wheel box pressure test needs.3, the pressure transducer antijamming capability is not strong, and the pressure measurement scope is less, and supporting pressure transducer is not suitable for the high temperature and high pressure environment downforce and measures.4, no special-purpose assorted spanner and pressure oil meter, the sensor installing/dismounting is inconvenient.5, generally can only single channel or binary channels image data, number of channels is on the low side.
Summary of the invention
To the problems referred to above, the purpose of the utility model provide a kind of environment applicability strong, can realize to the wheel box force value carry out the quick test record of real vehicle, precision is higher and lower-cost portable hand-held pressure tester.
For realizing above-mentioned purpose; The utility model is taked following technical scheme: a kind of portable hand-held pressure tester is characterized in that: it comprises four current type pressure transducers, four cable passage interfaces, signal condition module, A/D conversion module, data processing module, central processing unit, data memory module, human-computer interaction module and energy content of battery modules; The pressure signal of said four current type pressure transducers collection is imported in the said signal condition module through said four cable passage interfaces respectively; After converting pressure signal into d. c. voltage signal; Import through said A/D conversion module and to carry out range and unit conversion in the said data processing module; Signal after the conversion is imported in the said central processing unit, and the signal after the processing deposits in the said data memory module; The output terminal of said central processing unit also connects said human-computer interaction module and carries out data presentation, and the input end of said central processing unit also connects said energy content of battery module.
Said signal condition module comprises four low-pass filtering modules, four current conversion module and four voltage isolation modules; The current signal of each said current type pressure transducer output behind a said cable passage interface, is imported and is carried out Filtering Processing in the said low-pass filtering module respectively; Each said low-pass filtering module output terminal connects each said current conversion module input end respectively; After the current signal that said current conversion module is exported said current type pressure transducer converts voltage signal into; Import isolation processing in the said voltage isolation module, said voltage isolation module output terminal connects said A/D conversion module input end.
Said energy content of battery module output terminal connects the electric weight pilot lamp, and said energy content of battery module input connects charging inlet.
Said central processing unit adopts 32 process chip, and said A/D conversion module adopts 12 high speed analog-to-digital conversion chips, and said data memory module adopts the SD storage card that can plug.
What said four cable passage interfaces all adopted threaded connection loosens the waterproof Aviation Connector.
Each said current type pressure transducer all adopts the highest pressure measurement to reach the pressure transducer that 60MPa, pressure measurement temperature reach 150 degree.
The utility model is owing to take above technical scheme; It has the following advantages: 1, the utility model is owing to adopt four current type pressure transducers and four cable passage interfaces; With the pressure signal that collects through after the voltage isolation module in the signal condition module and the data processing module processing; Improved the signal antijamming capability, be convenient to the real vehicle sensor and install.2, the utility model is because the current type pressure transducer adopts the highest pressure measurement to reach the pressure transducer of 60MPa, and the pressure measurement temperature reaches 150 degree, can adapt to the test environment of vehicle-mounted wheel box high temperature, high pressure fully.3, the utility model is not because the energy content of battery module that adopts is merely the power supply of portable hand-held pressure tester; Also be responsible for simultaneously supplying power to the current type pressure transducer; Need not be the extra power supply that provides of current type pressure transducer during test, improve the convenience of using.4, the utility model in 5 milliseconds of SIs, satisfies the requirement of pressure acquisition simultaneously of wheel box hyperchannel owing to support the collection of four-way pressure data at most.5, the utility model carries out integrated design with functional modules such as signals collecting, data processing and analysis display alarms, and structure is small and exquisite, and man-machine interactive operation is simple, and is portable strong.Therefore the utility model can be widely used in online detection of various High-Powered Vehicle wheel box hydraulic system and data recording.
Description of drawings
Fig. 1 is the one-piece construction synoptic diagram of the utility model;
Fig. 2 is the signal condition modular structure synoptic diagram of the utility model;
Operating process synoptic diagram when Fig. 3 is the utility model use.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is carried out detailed description.
As shown in Figure 1, the utility model comprises four current type pressure transducers 1, four cable passage interfaces 2, signal condition module 3, A/D conversion module 4, data processing module 5, central processing unit 6, data memory module 7, human-computer interaction module 8, energy content of battery module 9, electric weight pilot lamp 10 and charging inlets 11.
The pressure signal of four current type pressure transducer 1 collections is respectively in four cable passage interface 2 input signal conditioning modules 3; After converting pressure signal between 0～10V d. c. voltage signal; In A/D conversion module 4 input data processing modules 5, carry out range and unit conversion, make it to represent the size of oil pressure with the form of MPa.Handle in the signal input central processing unit 6 after the conversion, the signal after the processing deposits in the data memory module 7, and the output terminal of central processing unit 6 also connects human-computer interaction module 8 and carries out data presentation; The input end of central processing unit 6 also connects energy content of battery module 9.Wherein, Energy content of battery module 9 output terminals connect the electric weight pilot lamp 10 that is used to point out charging; Input end connects charging inlet 11; Glimmer with the interval time in 1 second when electric weight less than five/a period of time, less than ten/one o'clock is to glimmer the interval time in 0.5 second, and the prompting user utilizes charging inlet 11 to charge.
In the foregoing description, central processing unit 6 adopts 32 process chip, and A/D conversion module 4 adopts 12 high speed analog-to-digital conversion chips, and bonding passage processing speed is not less than 1K.Data memory module 7 adopts pluggable SD storage card, and max cap. is supported 8G, satisfies the real vehicle test to the data memory requirement.
Among above-mentioned each embodiment; Four cable passage interfaces 2 are arranged side by side the upper panel at the portable hand-held pressure tester of the utility model; Each cable passage interface 2 opening diameter is 8 millimeters; That all adopts threaded connection loosens the waterproof Aviation Connector, guarantees the virtual connection phenomenon not occur in the test process.
Among above-mentioned each embodiment, human-computer interaction module 8 comprises colorful display screen and 4X4 button, through the control button, can realize selecting display channel, data storage, DTC inquiry, historical data playback and power on/off function.
Among above-mentioned each embodiment, each current type pressure transducer 1 all adopts the highest pressure measurement to reach the pressure transducer of 60MPa, and its pressure measurement temperature reaches 150 degree.
As shown in Figure 2; The signal condition module 3 of the utility model comprises four low-pass filtering modules 31, four current conversion module 32 and four voltage isolation modules 33; The current signal of each current type pressure transducer 1 output behind a cable passage interface 2, carries out Filtering Processing and removes undesired signal in the input low-pass filtering module 31 respectively.The output terminal of each low-pass filtering module 31 connects the input end of each current conversion module 32 respectively; Current conversion module 32 converts the current signal of current type pressure transducer 1 output between 0～10V voltage signal; Last every road voltage signal all gets into same voltage isolation module 33 and carries out mutual isolation processing, avoids the phase mutual interference.The output terminal of voltage isolation module 44 connects the input end of A/D conversion module 4, and the voltage signal after isolating gets into A/D conversion module 4 and is converted into digital quantity signal.
In the foregoing description; Each low-pass filtering module 31, each current conversion module 32 and the 33 unified designs of each voltage isolation module are on a surface-mounted integrated circuit; Dwindled the actual volume of signal condition module 3; Guarantee the miniaturization and the portability of the portable hand-held pressure tester of the utility model, improved the portability when using.
As shown in Figure 3, the utility model in use, it uses step following:
(1) four current type pressure transducers is installed,, is checked this portable hand-held pressure tester battery electric quantity with the portable hand-held pressure tester of four current type pressure transducers of high temperature shielded cable connection and the utility model;
(2) start the portable hand-held pressure tester, the normal and unusual boundary value scope of each current type pressure transducer pressure that is connected is set, start tested object;
(3) carry out the vehicle gear box gear-change operation, observe each current type pressure sensor signal in the gearshift procedure, normally then carry out data storage automatically, if abnormal signal then carries out the fault data storage if signal shows.
(4) after the completion data recording, close the portable hand-held pressure tester, the SD storage card that taking-up can plug gets final product.
Above-mentioned each embodiment only is used to explain the utility model; The structure of each parts and connected mode all can change to some extent; On the basis of the utility model technical scheme; All improvement and equivalents of the connection and the structure of individual component being carried out according to the utility model principle all should not got rid of outside the protection domain of the utility model.
Claims (9)
1. portable hand-held pressure tester, it is characterized in that: it comprises four current type pressure transducers, four cable passage interfaces, signal condition module, A/D conversion module, data processing module, central processing unit, data memory module, human-computer interaction module and energy content of battery modules;
The pressure signal of said four current type pressure transducers collection is imported in the said signal condition module through said four cable passage interfaces respectively; After converting pressure signal into d. c. voltage signal; Import through said A/D conversion module and to carry out range and unit conversion in the said data processing module; Signal after the conversion is imported in the said central processing unit, and the signal after the processing deposits in the said data memory module; The output terminal of said central processing unit also connects said human-computer interaction module and carries out data presentation, and the input end of said central processing unit also connects said energy content of battery module.
2. a kind of portable hand-held pressure tester as claimed in claim 1; It is characterized in that: said signal condition module comprises four low-pass filtering modules, four current conversion module and four voltage isolation modules; The current signal of each said current type pressure transducer output behind a said cable passage interface, is imported and is carried out Filtering Processing in the said low-pass filtering module respectively; Each said low-pass filtering module output terminal connects each said current conversion module input end respectively; After the current signal that said current conversion module is exported said current type pressure transducer converts voltage signal into; Import isolation processing in the said voltage isolation module, said voltage isolation module output terminal connects said A/D conversion module input end.
3. a kind of portable hand-held pressure tester as claimed in claim 1 is characterized in that: said energy content of battery module output terminal connects the electric weight pilot lamp, and said energy content of battery module input connects charging inlet.
4. like claim 1 or 2 or 3 described a kind of portable hand-held pressure testers; It is characterized in that: said central processing unit adopts 32 process chip; Said A/D conversion module adopts 12 high speed analog-to-digital conversion chips, and said data memory module adopts the SD storage card that can plug.
5. like claim 1 or 2 or 3 described a kind of portable hand-held pressure testers, it is characterized in that: what said four cable passage interfaces all adopted threaded connection loosens the waterproof Aviation Connector.
6. a kind of portable hand-held pressure tester as claimed in claim 4 is characterized in that: what said four cable passage interfaces all adopted threaded connection loosens the waterproof Aviation Connector.
7. like claim 1 or 2 or 3 or 6 described a kind of portable hand-held pressure testers, it is characterized in that: each said current type pressure transducer all adopts the highest pressure measurement to reach the pressure transducer that 60MPa, pressure measurement temperature reach 150 degree.
8. a kind of portable hand-held pressure tester as claimed in claim 4 is characterized in that: each said current type pressure transducer all adopts the highest pressure measurement to reach the pressure transducer that 60MPa, pressure measurement temperature reach 150 degree.
9. a kind of portable hand-held pressure tester as claimed in claim 5 is characterized in that: each said current type pressure transducer all adopts the highest pressure measurement to reach the pressure transducer that 60MPa, pressure measurement temperature reach 150 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200890851U CN202471336U (en) | 2012-03-09 | 2012-03-09 | Portable handheld pressure tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200890851U CN202471336U (en) | 2012-03-09 | 2012-03-09 | Portable handheld pressure tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202471336U true CN202471336U (en) | 2012-10-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200890851U Expired - Lifetime CN202471336U (en) | 2012-03-09 | 2012-03-09 | Portable handheld pressure tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202471336U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114544075A (en) * | 2021-12-30 | 2022-05-27 | 西安航天计量测试研究所 | Non-contact pressure measuring method and system based on strain and temperature sensors |
-
2012
- 2012-03-09 CN CN2012200890851U patent/CN202471336U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114544075A (en) * | 2021-12-30 | 2022-05-27 | 西安航天计量测试研究所 | Non-contact pressure measuring method and system based on strain and temperature sensors |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200721 Address after: Room 226, building a, West District, international business park, No.1, shangdixin Road, Haidian District, Beijing 100085 Patentee after: Beijing Huaji Interconnection Technology Co., Ltd Address before: 100092 Beijing City, Haidian District Road No. 12 box 166 Qinghe small camp Patentee before: Beijing Information Science & Technology University |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210409 Address after: 100096 605, unit 2, 6 / F, 99 Yuexiu Road, Haidian District, Beijing Patentee after: Beijing Xinke Ruitong Electromechanical Technology Co.,Ltd. Address before: 100085 226, building a, West District, international business park, No.1, Shangdi Information Road, Haidian District, Beijing Patentee before: Beijing Huaji Interconnection Technology Co., Ltd |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121003 |
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| CX01 | Expiry of patent term |