CN212844150U - GPF differential pressure sensor module is calibration test fixture in batches - Google Patents
GPF differential pressure sensor module is calibration test fixture in batches Download PDFInfo
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- CN212844150U CN212844150U CN202021660785.2U CN202021660785U CN212844150U CN 212844150 U CN212844150 U CN 212844150U CN 202021660785 U CN202021660785 U CN 202021660785U CN 212844150 U CN212844150 U CN 212844150U
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Abstract
The utility model discloses a GPF differential pressure sensor module batch calibration test tool, which relates to the technical field of sensor testing devices, wherein at least one socket groove used for limiting a socket is arranged on a bottom plate, a group of positioning holes matched with a bolt are arranged in the socket groove, and a group of air holes used for supplying air to a sensor air nozzle are also arranged on the socket groove and communicated with the air nozzle positioned on the side surface of the bottom plate; the socket can be sleeved with the GPF differential pressure sensor; the device is characterized by further comprising a DUT (device under test) board with pins, wherein one side of the DUT board is provided with golden fingers, and the pins correspond to the GPF differential pressure sensors in number. The tool is simple in structure and convenient to install, can effectively improve the productivity efficiency of sensor calibration test, reduces the calibration test cost and the rejection rate of assembly products, and can be compatible with various GPF sensors.
Description
Technical Field
The utility model belongs to the technical field of sensor testing arrangement technique and specifically relates to a GPF differential pressure sensor module is calibration test fixture in batches.
Background
Currently, in order to reduce the particulate emissions of gasoline engines, it is common to provide gasoline particulate traps (GPFs), which are ceramic filters installed in the exhaust system of gasoline engines to trap particulate emissions before they enter the atmosphere, in the exhaust gas treatment systems of automobiles.
A differential pressure sensor is a sensor used to measure the difference between two pressures. Along with the continuous accumulation of particulate matters on the inner wall surface of the GPF, the porous medium channel in the carrier is blocked, the exhaust back pressure is obviously increased, and the dynamic property and the economical efficiency of the whole vehicle are deteriorated. The GPF differential pressure sensors are arranged at two ends of the GPF and used for measuring the differential pressure at two ends of an inlet and an outlet so as to transmit the differential pressure to an Electronic Control Unit (ECU), and the ECU receives a signal to control and increase the temperature of the tail gas during emission, so that the catalyst is promoted to react, and accumulated particles are combusted and gasified. Finally, the soot generated by the engine can be reduced by more than 90%.
The existing calibration test of the GPF differential pressure sensor is to carry out high-low temperature calibration test under the condition of not having a shell, and the test is then put into the shell for packaging and shipment after calibration, so that the finished product is extremely susceptible to the influence of a packaging process to cause data out-of-tolerance, and defective products after the shell is packaged cannot be calibrated for the second time and can only be scrapped.
Therefore, a new technical improvement is urgently needed to solve the above problems.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to prior art's not enough, provide a GPF differential pressure sensor module calibration test fixture in batches, can realize the batch test to a plurality of GPF differential pressure sensor simultaneously, this frock is simple structure not only, simple to operate, can effectively improve the productivity efficiency of sensor calibration test, reduces the disability rate of calibration test cost and reduction assembly product to can compatible polytype GPF sensor.
In order to realize the purpose of the utility model, the utility model provides a following technical scheme:
a batch calibration test tool for GPF differential pressure sensor modules comprises a bottom plate 1, wherein at least one socket groove 1-1 used for limiting a socket 2 is formed in the bottom plate 1, a group of positioning holes 1-11 matched with a bolt 2-1 at the bottom of the socket 2 are formed in the socket groove 1-1, a group of first air holes 1-12 and second air holes 1-13 used for supplying air to a sensor air nozzle 6-1 of a GPF differential pressure sensor 6 are further formed in the socket groove 1-1, the first air holes 1-12 are communicated with first air nozzles 1-4 located on the side face of the bottom plate 1, and the second air holes 1-13 are communicated with second air nozzles 1-5 located on the side face of the bottom plate 1; the socket 2 is matched with the GPF differential pressure sensor 6, the GPF differential pressure sensor 6 can be sleeved with the socket, a third air hole 2-2 corresponding to the first air hole 1-12 and a fourth air hole 2-3 corresponding to the second air hole 1-13 are further formed in the bottom of the socket 2, air pipes 2-4 are respectively arranged in positions, corresponding to the third air hole 2-2 and the fourth air hole 2-3, of the inner cavity of the socket 2, and the air pipes 2-4 are used for being embedded into the inner cavity of the sensor air tap 6-1; the device is characterized by further comprising a DUT (device under test) board 3 with pins 3-1, wherein one side of the DUT board 3 is provided with gold fingers 3-2, and the number of the pins 3-1 corresponds to that of the GPF differential pressure sensors 6.
Preferably, the GPF differential pressure sensor comprises a pressing plate 4, wherein the pressing plate 4 is used for pressing the GPF differential pressure sensor 6, and the pressing plate 4 is screwed with a threaded hole 1-2 formed in the bottom plate 1 through a butterfly nut 5.
Preferably, a sealing ring 7 is further disposed between the first air hole 1-12 and the third air hole 2-2, and between the second air hole 1-13 and the fourth air hole 2-3.
Preferably, a sealing gasket 8 is sleeved on the gas pipe 2-4, and the sealing gasket 8 can be in contact with the sensor nozzle 6-1 to achieve the purpose of sealing.
Preferably, the bottom plate 1 comprises an oval hollow area 1-3, and 20 socket grooves 1-1 are formed in the surface of the bottom plate 1 corresponding to one side of the hollow area 1-3 and divided into 2 rows and 10 columns; the surface of the bottom plate 1 corresponding to the other side of the hollow area 1-3 is provided with 10 socket grooves 1-1 which are divided into 1 row and 10 columns; the hollow areas 1-3 are used for mounting the DUT board 3, and the gold fingers 3-2 are positioned outside the side edges of the bottom plate 1.
Preferably, the first air hole 1-12 in each socket groove 1-1 is communicated with the first air tap 1-4; the second air holes 1-13 in each socket groove 1-1 are communicated with the second air nozzles 1-5.
Advantageous effects
The utility model provides a GPF differential pressure sensor module is calibration test fixture in batches can realize the batch test to a plurality of GPF differential pressure sensor simultaneously, and this frock is simple structure not only, simple to operate, can effectively improve the productivity efficiency of sensor calibration test, reduces the disability rate of calibration test cost and reduction assembly product to can compatible multiple type GPF sensor.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a batch calibration test fixture for GPF differential pressure sensor modules according to the present invention;
fig. 2 is a bottom plate structure diagram of the batch calibration test tool for GPF differential pressure sensor modules according to the present invention;
fig. 3 is an installation schematic diagram of a socket and a GPF differential pressure sensor of the batch calibration test fixture for GPF differential pressure sensor modules according to the present invention;
figure 4 is the utility model relates to a GPF differential pressure sensor module calibrates socket inner chamber structure chart of test fixture in batches.
Graphic notation:
1-bottom plate, 1-1-socket groove, 1-11-positioning hole, 1-12-first air hole, 1-13-second air hole, 1-2-threaded hole, 1-3-hollow area, 1-4-first air hole, 1-5-second air hole, 2-socket, 2-1-bolt, 2-2-third air hole, 2-3-fourth air hole, 2-4-air pipe, 3-DUT plate, 3-1-pin, 3-2-golden finger, 4-pressing plate, 5-butterfly nut, 6-GPF differential pressure sensor, 6-1-sensor air hole, 7-sealing ring and 8-sealing gasket.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1 and 2, a batch calibration test tool for GPF differential pressure sensor modules comprises a base plate 1, wherein the base plate 1 is provided with at least one socket groove 1-1 for limiting a socket 2, a group of positioning holes 1-11 matched with a bolt 2-1 at the bottom of the socket 2 are arranged in the socket groove 1-1, and a group of first air holes 1-12 and second air holes 1-13 for supplying air to a sensor air nozzle 6-1 of a GPF differential pressure sensor 6 are also arranged in the socket groove 1-1, the first air holes 1-12 are communicated with first air nozzles 1-4 positioned on the side surface of the base plate 1, and the second air holes 1-13 are communicated with second air nozzles 1-5 positioned on the side surface of the base plate 1; the socket 2 is matched with the GPF differential pressure sensor 6, the GPF differential pressure sensor 6 can be sleeved with the socket, a third air hole 2-2 corresponding to the first air hole 1-12 and a fourth air hole 2-3 corresponding to the second air hole 1-13 are further formed in the bottom of the socket 2, air pipes 2-4 are respectively arranged in positions, corresponding to the third air hole 2-2 and the fourth air hole 2-3, of the inner cavity of the socket 2, and the air pipes 2-4 are used for being embedded into the inner cavity of the sensor air tap 6-1; the device is characterized by further comprising a DUT (device under test) board 3 with pins 3-1, wherein one side of the DUT board 3 is provided with gold fingers 3-2, and the number of the pins 3-1 corresponds to that of the GPF differential pressure sensors 6.
As the optimization of this embodiment, still be in good order with GPF differential pressure sensor 6 reaches better test effect with socket 2 fastening, still be provided with clamp plate 4, clamp plate 4 is used for compressing tightly GPF differential pressure sensor 6, just clamp plate 4 through butterfly nut 5 with open in screw hole 1-2 on bottom plate 1 connects soon.
As shown in fig. 3 and 4, in order to improve the sealing effect, a sealing ring 7 is further disposed between the first air hole 1-12 and the third air hole 2-2, and between the second air hole 1-13 and the fourth air hole 2-3; a sealing gasket 8 is sleeved on the gas pipe 2-4, and the sealing gasket 8 can be in contact with the sensor nozzle 6-1 to achieve the purpose of sealing.
As shown in fig. 1 and 2, the bottom plate 1 includes an oval hollow area 1-3, and 20 socket grooves 1-1 are formed on the surface of the bottom plate 1 corresponding to one side of the hollow area 1-3 and divided into 2 rows and 10 columns; the surface of the bottom plate 1 corresponding to the other side of the hollow area 1-3 is provided with 10 socket grooves 1-1 which are divided into 1 row and 10 columns; the hollow areas 1-3 are used for mounting the DUT board 3, and the gold fingers 3-2 are positioned outside the side edges of the bottom plate 1; the first air hole 1-12 in each socket groove 1-1 is communicated with the first air tap 1-4; the second air holes 1-13 in each socket groove 1-1 are communicated with the second air nozzles 1-5. When the pneumatic air valve is used, the first air nozzle 1-4 and the second air nozzle 1-5 are respectively connected with an external pressure controller through hoses, and pressure air is input into the first air nozzle 1-4 and the second air nozzle 1-5 through the pressure controller.
The working principle is as follows: inserting 30 GPF differential pressure sensors which are calibrated for the generation into 30 sockets 2, fixing the GPF differential pressure sensors by 6 pressing plates 4 through butterfly nuts 5, and pressing the GPF differential pressure sensors tightly to enable the GPF differential pressure sensors to be airtight; sequentially connecting the pin headers 3-1 on the DUT board 3 to a GPF differential pressure sensor 6 on a socket 2 of a corresponding station through a simple connector, wherein a golden finger 3-2 on the side surface of the DUT board 3 is connected with an external test instrument through a golden finger slot on an adapter plate; and then the hose is used for connecting the pressure controller with the air tap on the side surface of the bottom plate 1, so that the whole testing tool is successfully installed.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (6)
1. The utility model provides a GPF differential pressure sensor module calibrates test fixture in batches which characterized in that: the GPF pressure difference sensor comprises a bottom plate (1), wherein at least one socket groove (1-1) used for limiting a socket (2) is formed in the bottom plate (1), a group of positioning holes (1-11) matched with a bolt (2-1) at the bottom of the socket (2) are formed in the socket groove (1-1), a group of first air holes (1-12) and second air holes (1-13) used for supplying air to a sensor air nozzle (6-1) of the GPF pressure difference sensor (6) are formed in the socket groove (1-1), the first air holes (1-12) are communicated with first air nozzles (1-4) located on the side face of the bottom plate (1), and the second air holes (1-13) are communicated with second air nozzles (1-5) located on the side face of the bottom plate (1); the socket (2) is matched with the GPF differential pressure sensor (6), the GPF differential pressure sensor (6) can be sleeved with the socket, a third air hole (2-2) corresponding to the first air hole (1-12) and a fourth air hole (2-3) corresponding to the second air hole (1-13) are further formed in the bottom of the socket (2), air conveying pipes (2-4) are respectively arranged in positions, corresponding to the third air hole (2-2) and the fourth air hole (2-3), of the inner cavity of the socket (2), and the air conveying pipes (2-4) are used for being embedded into the inner cavity of the sensor air faucet (6-1); the device is characterized by further comprising a DUT (device under test) board (3) with pins (3-1), wherein one side of the DUT board (3) is provided with golden fingers (3-2), and the number of the pins (3-1) corresponds to that of the GPF differential pressure sensors (6).
2. The GPF differential pressure sensor module batch calibration test tool of claim 1, characterized in that: the GPF differential pressure sensor is characterized by further comprising a pressing plate (4), wherein the pressing plate (4) is used for pressing the GPF differential pressure sensor (6), and the pressing plate (4) is connected with a threaded hole (1-2) formed in the bottom plate (1) in a screwing mode through a butterfly nut (5).
3. The GPF differential pressure sensor module batch calibration test tool of claim 1, characterized in that: sealing rings (7) are further arranged between the first air holes (1-12) and the third air holes (2-2) and between the second air holes (1-13) and the fourth air holes (2-3).
4. The GPF differential pressure sensor module batch calibration test tool of claim 1, characterized in that: the air delivery pipe (2-4) is sleeved with a sealing gasket (8), and the sealing gasket (8) can be in contact with the sensor air faucet (6-1) to achieve the purpose of sealing.
5. The GPF differential pressure sensor module batch calibration test tool of claim 1, characterized in that: the bottom plate (1) comprises an oval hollow area (1-3), and 20 socket grooves (1-1) are formed in the surface, corresponding to one side of the hollow area (1-3), of the bottom plate (1) and divided into 2 rows and 10 columns; the surface of the bottom plate (1) corresponding to the other side of the hollow area (1-3) is provided with 10 socket grooves (1-1) which are divided into 1 row and 10 columns; the hollow areas (1-3) are used for mounting the DUT board (3), and the golden fingers (3-2) are positioned on the outer sides of the side edges of the bottom plate (1).
6. The GPF differential pressure sensor module batch calibration test tool of claim 5, wherein: the first air hole (1-12) in each socket groove (1-1) is communicated with the first air nozzle (1-4); the second air holes (1-13) in each socket groove (1-1) are communicated with the second air nozzles (1-5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021660785.2U CN212844150U (en) | 2020-08-11 | 2020-08-11 | GPF differential pressure sensor module is calibration test fixture in batches |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021660785.2U CN212844150U (en) | 2020-08-11 | 2020-08-11 | GPF differential pressure sensor module is calibration test fixture in batches |
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| CN212844150U true CN212844150U (en) | 2021-03-30 |
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| CN202021660785.2U Active CN212844150U (en) | 2020-08-11 | 2020-08-11 | GPF differential pressure sensor module is calibration test fixture in batches |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117419853A (en) * | 2023-11-01 | 2024-01-19 | 无锡华阳科技有限公司 | Be used for breathing machine pressure sensor calibration and test fixture |
| GB2622156A (en) * | 2023-09-01 | 2024-03-06 | Sinomach Sensing Tech Co Ltd | Testing tool and a testing method for differential pressure sensor cores. |
| CN117968937A (en) * | 2024-04-01 | 2024-05-03 | 沈阳仪表科学研究院有限公司 | Differential pressure sensor testing device |
-
2020
- 2020-08-11 CN CN202021660785.2U patent/CN212844150U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2622156A (en) * | 2023-09-01 | 2024-03-06 | Sinomach Sensing Tech Co Ltd | Testing tool and a testing method for differential pressure sensor cores. |
| CN117419853A (en) * | 2023-11-01 | 2024-01-19 | 无锡华阳科技有限公司 | Be used for breathing machine pressure sensor calibration and test fixture |
| CN117419853B (en) * | 2023-11-01 | 2024-05-14 | 无锡华阳科技有限公司 | Be used for breathing machine pressure sensor calibration and test fixture |
| CN117968937A (en) * | 2024-04-01 | 2024-05-03 | 沈阳仪表科学研究院有限公司 | Differential pressure sensor testing device |
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