CN202836877U - Fast calibration device of branch pipe pressure sensor combined circuit board - Google Patents
Fast calibration device of branch pipe pressure sensor combined circuit board Download PDFInfo
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- CN202836877U CN202836877U CN 201220520827 CN201220520827U CN202836877U CN 202836877 U CN202836877 U CN 202836877U CN 201220520827 CN201220520827 CN 201220520827 CN 201220520827 U CN201220520827 U CN 201220520827U CN 202836877 U CN202836877 U CN 202836877U
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- container
- calibrated
- pressure sensor
- heat insulation
- adjustable electric
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Abstract
The utility model discloses a fast calibration device of a branch pipe pressure sensor combined circuit board. The fast calibration device of the branch pipe pressure sensor combined circuit board comprises a base seat, a cylinder support frame, a cylinder, a dragging plate and a container. The fast calibration device of the branch pipe pressure sensor combined circuit board is characterized in that a fan, a refrigerator and a heater are arranged at the left end inside a heat insulation mold cavity of the container, a temperature measurement support frame, a frame to be calibrated and a probe plate are arranged on the support frame at the left end inside the heat insulation mold cavity, a temperature measurement circuit board and a board to be calibrated are respectively arranged on the temperature measurement support frame and the frame to be calibrated in a back-to-back mode, a sensing chip of a branch pipe pressure sensor is welded on the board to be calibrated, and simulation standard temperature sensor is welded on the temperature measurement circuit board. A vacuum tank, a high pressure gas tank, a variable frequency compression refrigeration device are arranged outside the container. The temperature and pressure in the heat insulation mold cavity are adjusted under the control of a computer and a closed cycle control is achieved. On the premise that calibration precision is guaranteed, calibration time is greatly shortened and production efficiency is improved, calibration cost is reduced and measurement precision of products is effectively guaranteed.
Description
Technical field
The utility model relates to the demarcation of gas pressure sensor, relates in particular to a kind of fast calibration device of manifold pressure sensor grouping circuits plate.
Background technology:
At present, although the operative norm of domestic commercial vehicle discharging also is in state's III stage, but the vehicle that has quite a few has adopted high pressure co-rail diesel engine, and the operation of above-mentioned engine needs to detect in real time charge flow rate (quality) by ECU control during operation.The detection of charge flow rate adopts air flow sensor and manifold pressure to add these two kinds of methods of temperature sensor usually, and from actual operating position, the latter's use is more stable, and the fault part number percent of feedback is also much smaller after sale.Expert engineers it is generally acknowledged that the environment for use of commercial vehicle is more abominable, the induction chip of air flow sensor exposes in atmosphere, the induction chip of manifold pressure sensor is then by gel overlay, induction chip and the atmosphere of manifold pressure sensor are isolated, thereby the latter has more superior anti-corrosion, resistance to soiling.For this reason, add and enter after state's IV discharge phase commercial engines and substantially all need to carry out charge flow rate and detect, can estimate: manifold pressure sensor will obtain large-area batch and use, but its prerequisite is the requirement manifold pressure sensor higher precision be arranged.
From making angle, manifold pressure sensor at first needs to carry out in the circuit board the binding of induction chip, the induction chip that binding is good demarcates to meet the characteristic requirements of different engines again, because the output of the signal of manifold pressure sensor is the binary function of pressure and temperature, demarcate and temperature calibration two parts so demarcate partial pressure, above-mentioned two-part demarcation is carried out simultaneously when practical operation usually.
The demarcation of common manifold pressure sensor is to carry out in the heat insulation die cavity of the container of the gas-pressure adjustable of a similar vacuum tank and temperature, because the manifold pressure of engine charge is lower than 1 atmospheric pressure, usually consider in the heat insulation die cavity to carry out pressure regulation with vacuumizing with high-pressure aerated mode, the air themperature of each several part is balanced with fan blade.According to the requirement of the aspects such as the Performance Characteristics of manifold pressure sensor and production efficiency, need to carry out many to the multiple pressure force in its whole working temperature and the pressure limit and many temperature spots and demarcate simultaneously.
Owing to temperature environment is wanted a lot of reason of difficulty with respect to the pressure environment adjustment, for the demarcation of single-piece manifold pressure sensor, usual method is that fixing a certain temperature spot is done the demarcation in multiple pressure force, and then the temperature spot that changes to other carries out the demarcation in multiple pressure force again.And for the demarcation of many manifold pressure sensors, must make the inside constant temperature of heat insulation die cavity, allow the identical guarantee of temperature of each manifold pressure sensor demarcate effect, but heating and cooling device, demarcate anchor clamps, container itself etc. all exists inhales exothermic effect, the insulation that adds upper container neither be absolute, constant temperature lags behind always with respect to temperature adjustment, in not having the container of complete constant temperature, there is certain temperature field from high to low in some position, can make the actual temperature of the different manifold pressure sensor of clamping position with the Temperature numerical of measuring the standard air temperature sensor in the heat insulation die cavity certain deviation be arranged, this deviation can weaken the demarcation effect, affects the measuring accuracy of manifold pressure sensor.So just can carry out proving operation after needing actually long time to make internal tank reach a relative equilibrium, stable temperature value.Rule of thumb, the more complete caliberating device of such cover, even adopt more effective PID(ratio, integration and differentiation) temperature control method, temperature spot of every conversion also reaches comparatively ideal temperature constant state and needs at least 30 minutes, the overall process nominal time is just very long like this, so it is very low to demarcate efficient, artificial, equipment operating cost is very high, be not suitable for that the auto parts and components manufacturing is in enormous quantities, the requirement of low-cost production.
Summary of the invention:
The purpose of this utility model is to provide a kind of fast calibration device of manifold pressure sensor grouping circuits plate, it can be under the prerequisite that effectively guarantees stated accuracy, shorten significantly the nominal time and enhance productivity, reduce calibration cost, effectively guaranteed the measuring accuracy of product simultaneously.
The purpose of this utility model is achieved in that
A kind of fast calibration device of manifold pressure sensor grouping circuits plate, comprise the pedestal with guide rail, air cylinder support and container are installed on pedestal, guide rail be equipped with can move left and right planker, at air cylinder support cylinder is installed, left end at container is fixed with the container left cover, on planker, be fixed with the container right cover of shaped as frame, the top of the right panel of container right cover and the piston rod of cylinder is fastenedly connected, be fixed with in the left plate outside of container right cover and be convenient to the O-ring seal that cooperates with flange seal on the container front end, the container left cover, container and container right cover form the heat insulation die cavity of sealing, feature is: the left end in heat insulation die cavity is equipped with fan from left to right successively, refrigerator and well heater, in heat insulation die cavity right-hand member the supporting bracket that the left plate with the container right cover is connected as a single entity is installed, at supporting bracket several fixedly guide pillars are installed, the thermometric support is fixed on the fixedly innermost end of guide pillar, support to be calibrated and probe card are sleeved on fixedly on the guide pillar from inside to outside, and by fastening nuts; Thermometric support and support to be calibrated are two hollow supports in centre that do not have shape and material difference, at the middle hollow parts of thermometric support and support to be calibrated back-to-back thermometric wiring board and the plate to be calibrated of being equipped with respectively, thermometric wiring board and plate to be calibrated are the grouping circuits plate that does not have a plurality of manifold pressure sensors of shape and material difference before not soldered electronic component, welded the induction chip of many groups manifold pressure sensor at plate to be calibrated, the mock standard temperature sensor has been welded in the position of the induction chip of the former manifold pressure sensor on the thermometric wiring board, and each mock standard temperature sensor carried out the encapsulation of similar manifold pressure sensor induction chip, make the manifold pressure sensor induction chip and be equal to the simulation process of leading warm structure, closely level is corresponding one by one for the mock standard temperature sensor on the induction chip of the manifold pressure sensor on the plate to be calibrated after installing and the thermometric wiring board; Be fixed with the probe that several electrically contact at probe card, each probe is the corresponding dish that electrically contacts that electrically contacts on the plate to be calibrated respectively, the probe that mock standard temperature sensor on the thermometric wiring board is connected with probe card all is connected with data-interface with the communication interface of computer system by the right multichannel vacuum electric joint on the left plate that is installed in the container right cover, in the container left cover left multichannel vacuum electric joint is installed;
With the heat insulation die cavity of container in carry out that Y shape gas is communicated with two gas pipelines on the gas pipeline that gas is communicated with, two gas pipelines connect separately first an adjustable electric air valve and the second adjustable electric air valve, the first adjustable electric air valve and vacuum tank carry out gas and are communicated with, and the second adjustable electric air valve and high pressure gas holder carry out gas and be communicated with; Refrigerator is connected by the adjustable electric hydrodynamic valve of infusion fluid pipeline with the container outside, adjustable electric hydrodynamic valve is connected by cold-producing medium output liquid pipeline with the frequency conversion compression refrigerating apparatus of container outside, and refrigerator is connected by the trickle pipeline with the frequency conversion compression refrigerating apparatus; Outer wall at container is equipped with for the pressure and temperature of measuring respectively air in the heat insulation die cavity and the standard air pressure transducer that is connected with communication interface respectively and standard air temperature sensor; Adjustable electric hydrodynamic valve, the first adjustable electric air valve, the second adjustable electric air valve, regulate interface with control and be electrically connected, well heater and fan are regulated interface by left multichannel vacuum electric joint with control ﹠PID and are electrically connected, computing machine is by the Real-Time Monitoring to standard air pressure transducer, standard air temperature sensor, and the interval and the work of fan heat time heating time of the aperture of control adjustable electric air valve, the first adjustable electric air valve, the second adjustable electric air valve, well heater, closed-loop control is regulated and realized to the temperature and pressure in the heat insulation die cavity.
Heat insulation type cavity wall at container is pasted with insulating.
The right-hand member of the well heater in heat insulation die cavity is equipped with air commutating plate.
The utility model is that a given definite deviation range is demarcated temperature province as the permission of this temperature spot in the front and back of each temperature spot to be calibrated, adopt simultaneously structure identical with material on the hardware, warm structure is led in being equal to of position horizontal symmetrical, reach the temperature that the mock standard temperature sensor detects the induction chip on the manifold pressure sensor is set closely point-to-pointly, the temperature value that obtains with each locational mock standard temperature sensor is as the demarcation temperature of manifold pressure sensor, the heat insulation die cavity that does not need container is long thermostatic process repeatedly, effectively guaranteeing under the prerequisite of stated accuracy, realized the Fast Calibration of manifold pressure sensor grouping circuits plates, effectively reduce artificial, equipment operating cost has improved the competitiveness of product in market.
Description of drawings:
Fig. 1 is circuit block diagram of the present utility model;
Fig. 2 is structural representation of the present utility model;
Fig. 3 is the vertical view of Fig. 2;
Fig. 4 be among Fig. 2 A-A to synoptic diagram.
Embodiment:
Below in conjunction with embodiment and contrast accompanying drawing method of the present utility model is further detailed.
A kind of fast calibration device of manifold pressure sensor grouping circuits plate, comprise the pedestal 4 with guide rail 2, air cylinder support 1 and container 13 are installed on pedestal 4, guide rail 2 be equipped with can move left and right planker 3, at air cylinder support 1 cylinder 9 is installed, left end at container 13 is fixed with container left cover 31, on planker 3, be fixed with the container right cover 11 of shaped as frame, the right panel 36 of container right cover 11 is fastenedly connected with the top of the piston rod 37 of cylinder 9, left plate 12 outsides of container right cover 11 be fixed be convenient to container 13 front ends on the O-ring seal 39 that is sealed and matched of flange 38, container left cover 31, container 13 and container right cover 11 form the heat insulation die cavity 40 of sealing, left end in heat insulation die cavity 40 is equipped with fan 7 from left to right successively, refrigerator 6, well heater 5 and air commutating plate 42, right-hand member in heat insulation die cavity 40 is equipped with the supporting bracket 14 that the left plate 12 with container right cover 11 is connected as a single entity, at supporting bracket 14 several fixedly guide pillars 29 are installed, thermometric support 28 is fixed on the fixedly innermost end of guide pillar 29, support 27 to be calibrated and probe card 26 are sleeved on fixedly on the guide pillar 29 from inside to outside, and fastening by nut 41; Thermometric support 28 and support to be calibrated 27 all are the middle hollow stings that do not have shape and material difference, at the hollow part in the centre of thermometric support 28 and support to be calibrated 27 back-to-back thermometric wiring board 32 and the plate to be calibrated 33 of being equipped with respectively, thermometric wiring board 32 and plate to be calibrated 33 are the grouping circuits plate that does not have a plurality of manifold pressure sensors of shape and material difference before not soldered electronic component, welded the induction chip 25 of many groups manifold pressure sensor at plate 27 to be calibrated, mock standard temperature sensor 30 has been welded in the position of the induction chip 25 of the former manifold pressure sensor on the thermometric wiring board, and each mock standard temperature sensor 30 carried out the encapsulation of the induction chip 25 of similar manifold pressure sensor, the induction chip 25 of making manifold pressure sensor is equal to the simulation process of leading warm structure, and closely level is corresponding one by one for the mock standard temperature sensor on the induction chip 25 of the manifold pressure sensor on the support to be calibrated 27 after installing and the thermometric wiring board 32; Be fixed with several probes that electrically contacts 24 at probe card 26, each probe 24 is the corresponding dish that electrically contacts that electrically contacts on the plate 33 to be calibrated respectively, the probe 24 that mock standard temperature sensor 30 on the thermometric wiring board 32 is connected with probe card all is connected with data-interface with the communication interface of computer system by the right multichannel vacuum electric joint 10 on the left plate 12 that is installed in container right cover 11, in container left cover 31 left multichannel vacuum electric joint 8 is installed;
With the heat insulation die cavity 40 of container 13 in carry out that Y shape gas is communicated with two gas pipelines 34 on the gas pipeline 34 that gas is communicated with, two gas pipelines 34 connect separately first an adjustable electric air valve 17 and the second adjustable electric air valve 17, the first adjustable electric air valve 17 and vacuum tank 20 carry out gas and are communicated with, and the second adjustable electric air valve 18 and high pressure gas holder 21 carry out gas and be communicated with; Refrigerator 6 is connected with the adjustable electric hydrodynamic valve 19 of container 13 outsides by fluid pipeline 35, adjustable electric hydrodynamic valve 19 is connected by cold-producing medium output liquid pipeline 43 with frequency conversion compression refrigerating apparatus 22, and refrigerator 6 is connected by cold-producing medium infusion fluid pipeline 44 with frequency conversion compression refrigerating apparatus 22; Outer wall at container 13 is equipped with for the pressure and temperature of measuring respectively heat insulation die cavity 40 interior air and the standard air pressure transducer 15 that is connected with communication interface respectively and standard air temperature sensor 16; Adjustable electric hydrodynamic valve 19, the first adjustable electric air valve 17, the second adjustable electric air valve 18 is regulated interface with control ﹠PID respectively and is electrically connected, well heater 5 and fan 7 are electrically connected with control ﹠PID adjusting interface respectively by the left multichannel vacuum electric joint 8 that is installed on the container left cover 31, computing machine passes through standard air pressure transducer 15, the Real-Time Monitoring of standard air temperature sensor 16, and control adjustable electric air valve 19, the first adjustable electric air valve 17, the aperture of the second adjustable electric air valve 18, closed-loop control is regulated and realized in the interval and the work of fan 7 heat time heating time of well heater 7 to the temperature and pressures in the heat insulation die cavity 40.
Heat insulation die cavity 40 inwalls at container 13 are pasted with insulating 23.
When needs carry out timing signal, support 27 to be calibrated and probe card 26 are fastened on fixedly on the guide pillar 29 by nut 41, and supporting bracket 14 is pushed in the heat insulation die cavity 40 by cylinder 9 and demarcates; When having demarcated when rear, cylinder 9 is pulled out heat insulation die cavity 40 with supporting bracket 14, unscrews nut 41, and support 27 to be calibrated and probe card 26 can be from fixedly taking out on the guide pillar 29 from inside to outside.
Container left cover 31, container 13 and container right cover 11 form the heat insulation die cavity 40 of sealing, when container right cover 11 and container 13 closure, supporting bracket 14 all enters heat insulation die cavity 40 inside of container 13, and the sealing that all is isolated from the outside except adjusting the pipeline opening that air pressure uses of heat insulation die cavity 40 inside.
Claims (3)
1. the fast calibration device of a manifold pressure sensor grouping circuits plate, comprise the pedestal with guide rail, air cylinder support and container are installed on pedestal, guide rail be equipped with can move left and right planker, at air cylinder support cylinder is installed, left end at container is fixed with the container left cover, on planker, be fixed with the container right cover of shaped as frame, the top of the right panel of container right cover and the piston rod of cylinder is fastenedly connected, be fixed with in the left plate outside of container right cover and be convenient to the O-ring seal that cooperates with flange seal on the container front end, the container left cover, container and container right cover form the heat insulation die cavity of sealing, it is characterized in that: the left end in heat insulation die cavity is equipped with fan from left to right successively, refrigerator and well heater, right-hand member in heat insulation die cavity is equipped with the supporting bracket that the left plate with the container right cover is connected as a single entity, at supporting bracket several fixedly guide pillars are installed, the thermometric support is fixed on the fixedly innermost end of guide pillar, support to be calibrated and probe card are sleeved on fixedly on the guide pillar from inside to outside, and by fastening nuts; Thermometric support and support to be calibrated all are middle hollow stings, at the middle hollow parts of thermometric support and support to be calibrated back-to-back thermometric wiring board and the plate to be calibrated of being equipped with respectively, thermometric wiring board and plate to be calibrated are the grouping circuits plate of a plurality of manifold pressure sensors before not soldered electronic component, welded the induction chip of many groups manifold pressure sensor at plate to be calibrated, the mock standard temperature sensor has been welded in the position of the induction chip of the former manifold pressure sensor on the thermometric wiring board, and each mock standard temperature sensor carried out the encapsulation of similar manifold pressure sensor induction chip, make the manifold pressure sensor induction chip and be equal to the simulation process of leading warm structure, closely level is corresponding one by one for the mock standard temperature sensor on the induction chip of the manifold pressure sensor on the plate to be calibrated after installing and the thermometric wiring board; Be fixed with the probe that several electrically contact at probe card, each probe is the corresponding dish that electrically contacts that electrically contacts on the plate to be calibrated respectively, the probe that mock standard temperature sensor on the thermometric wiring board is connected with probe card all is connected with data-interface with the communication interface of computer system by the right multichannel vacuum electric joint on the left plate that is installed in the container right cover, in the container left cover left multichannel vacuum electric joint is installed;
With the heat insulation die cavity of container in carry out that Y shape gas is communicated with two gas pipelines on the gas pipeline that gas is communicated with, two gas pipelines connect separately first an adjustable electric air valve and the second adjustable electric air valve, the first adjustable electric air valve and vacuum tank carry out gas and are communicated with, and the second adjustable electric air valve and high pressure gas holder carry out gas and be communicated with; Refrigerator is connected by the adjustable electric hydrodynamic valve of fluid pipeline with the container outside, adjustable electric hydrodynamic valve is connected with the cold-producing medium output liquid pipeline of the frequency conversion compression refrigerating apparatus of container outside, and another interface tube of refrigerator is connected with the infusion fluid pipeline of frequency conversion compression refrigerating apparatus; Outer wall at container is equipped with for the pressure and temperature of measuring respectively air in the heat insulation die cavity and the standard air pressure transducer that is connected with communication interface respectively and standard air temperature sensor; Adjustable electric air valve, the first adjustable electric air valve, the second adjustable electric air valve, well heater and fan are regulated interface with control ﹠PID respectively and are electrically connected, computing machine is by the Real-Time Monitoring to standard air pressure transducer, standard air temperature sensor, and the interval and the work of fan heat time heating time of the aperture of control adjustable electric air valve, the first adjustable electric air valve, the second adjustable electric air valve, well heater, closed-loop control is regulated and realized to the temperature and pressure in the heat insulation die cavity.
2. fast calibration device according to claim 1, it is characterized in that: the heat insulation type cavity wall at container is pasted with insulating.
3. fast calibration device according to claim 1, it is characterized in that: the right-hand member of the well heater in heat insulation die cavity is equipped with air commutating plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220520827 CN202836877U (en) | 2012-10-12 | 2012-10-12 | Fast calibration device of branch pipe pressure sensor combined circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220520827 CN202836877U (en) | 2012-10-12 | 2012-10-12 | Fast calibration device of branch pipe pressure sensor combined circuit board |
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| Publication Number | Publication Date |
|---|---|
| CN202836877U true CN202836877U (en) | 2013-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220520827 Withdrawn - After Issue CN202836877U (en) | 2012-10-12 | 2012-10-12 | Fast calibration device of branch pipe pressure sensor combined circuit board |
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| CN (1) | CN202836877U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102914406A (en) * | 2012-10-12 | 2013-02-06 | 南昌工控电装有限公司 | Rapid calibration method and device for combined circuit board of manifold pressure sensors |
| CN106054011A (en) * | 2016-03-03 | 2016-10-26 | 温州深科检测设备有限公司 | Automatic electric leakage detection platform for electric leakage circuit breaker |
| CN109387326A (en) * | 2018-12-10 | 2019-02-26 | 南京工程学院 | The fast tune servomechanism installation of air pressure in a kind of confined space |
| CN115389099A (en) * | 2022-10-26 | 2022-11-25 | 北京中科富海低温科技有限公司 | Pressure sensor calibration device |
| CN117030111A (en) * | 2023-10-08 | 2023-11-10 | 无锡芯感智半导体有限公司 | Flip-chip sensor calibration tool |
-
2012
- 2012-10-12 CN CN 201220520827 patent/CN202836877U/en not_active Withdrawn - After Issue
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102914406A (en) * | 2012-10-12 | 2013-02-06 | 南昌工控电装有限公司 | Rapid calibration method and device for combined circuit board of manifold pressure sensors |
| CN102914406B (en) * | 2012-10-12 | 2014-09-10 | 南昌工控电装有限公司 | Rapid calibration method and device for combined circuit board of manifold pressure sensors |
| CN106054011A (en) * | 2016-03-03 | 2016-10-26 | 温州深科检测设备有限公司 | Automatic electric leakage detection platform for electric leakage circuit breaker |
| CN106054011B (en) * | 2016-03-03 | 2019-03-12 | 温州深科检测设备有限公司 | The automatic detection of electrical leakage platform of leakage circuit breakers |
| CN109387326A (en) * | 2018-12-10 | 2019-02-26 | 南京工程学院 | The fast tune servomechanism installation of air pressure in a kind of confined space |
| CN109387326B (en) * | 2018-12-10 | 2023-08-25 | 南京工程学院 | Quick-adjusting servo device for air pressure in closed space |
| CN115389099A (en) * | 2022-10-26 | 2022-11-25 | 北京中科富海低温科技有限公司 | Pressure sensor calibration device |
| CN117030111A (en) * | 2023-10-08 | 2023-11-10 | 无锡芯感智半导体有限公司 | Flip-chip sensor calibration tool |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130327 Effective date of abandoning: 20140910 |
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| RGAV | Abandon patent right to avoid regrant |