CN215639404U - Waterproof dustproof air chamber that can breathe freely in height measurement - Google Patents
Waterproof dustproof air chamber that can breathe freely in height measurement Download PDFInfo
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- CN215639404U CN215639404U CN202122010432.9U CN202122010432U CN215639404U CN 215639404 U CN215639404 U CN 215639404U CN 202122010432 U CN202122010432 U CN 202122010432U CN 215639404 U CN215639404 U CN 215639404U
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Abstract
The utility model discloses a waterproof, dustproof and breathable air chamber for height measurement, which consists of a sensor base and a sensor air nozzle which are connected into a whole, wherein a sensor circuit board for fixing a pressure sensor and processing signals is arranged in the base air chamber of the sensor base, and a waterproof, dustproof and breathable valve and the sensor air nozzle are arranged at the top of the sensor base. The second air chamber at waterproof dustproof ventilation valve place is entered into through the water conservancy diversion hole of sensor air cock to the atmosphere, then enters into the first air chamber at pressure sensor place through waterproof dustproof ventilation valve again, makes pressure variation act on pressure sensor's response face, and the chip in the pressure sensor reads pressure variation, after the processing circuit conversion, becomes the signal of telecommunication output. The utility model can effectively avoid the influence of external moisture and dust on the sensing surface of the pressure sensor, accurately measure the pressure change and realize the purpose of measuring the height change of the pressure sensor.
Description
Technical Field
The utility model relates to the field of height measurement, in particular to a waterproof, dustproof and breathable air chamber in height measurement.
Background
The pressure sensor in the height measurement is a sensor based on the pressure effect. According to the law that the atmospheric pressure and the altitude have 'altitude rise atmospheric pressure reduction and altitude fall atmospheric pressure increase', the sensing surface of the pressure sensor is communicated with the atmosphere to respectively convert the atmospheric pressure and the atmospheric temperature into electric signals, the electric signals are converted into digital signals by the AD conversion circuit after passing through the signal adjusting circuit, and the microprocessor carries out temperature compensation, calibration, altitude conversion and other processing to realize altitude measurement.
The pressure sensor is required to realize height measurement, firstly, the sensing surface of the pressure sensor is ensured to be communicated with the atmosphere, real-time and on-site atmospheric pressure and temperature can be acquired, the sensing surface of the pressure sensor is required to be in close contact with the atmosphere, and the pressure sensor has the characteristics of good stability, high sensitivity, strong environmental applicability and the like.
Because the sensing surface of the pressure sensor is communicated with the atmosphere, the interference problem of moisture and dust in the atmosphere exists, and particularly, under a severe atmosphere environment, if the air in contact with the sensing surface of the pressure sensor is not processed, the measurement precision and accuracy of the pressure sensor can be directly influenced.
Disclosure of Invention
The utility model aims to provide a waterproof, dustproof and breathable air chamber which can effectively avoid the influence of factors such as moisture and dust in the atmosphere on the sensing surface of a pressure sensor in height measurement, improves the measurement accuracy of the pressure sensor, has stable performance and simple structure.
The purpose of the utility model is realized as follows:
the utility model provides a waterproof dustproof air chamber that can breathe freely among height measurement, includes the sensor base of under shed, "Jiong" shape, is equipped with the base air chamber of big step shape down in the sensor base, is equipped with on the roof of sensor base with base air chamber intercommunication and lateral wall in-band screw thread base round hole, the characteristic is: the upper part in the base air chamber is provided with a sensor plate part welded with a pressure sensor on a circuit board, the data of the sensor plate part is led out to the outside through a cable, the sensor plate part is upwards compressed by a sensor compression ring, a sealing glue layer for sealing the sensor plate part and the sensor compression ring in the base air chamber is filled below the sensor compression ring in the base air chamber, the side wall of the lower half part of a waterproof dustproof vent valve with a T-shaped cross section is provided with external threads, the waterproof dustproof vent valve can play the roles of waterproofing, dust prevention and ventilation, and the lower half part of the waterproof dustproof vent valve is screwed into a round hole of the base from top to bottom so that the waterproof dustproof vent valve is located on a top plate of the sensor base; the top edge at the roof of sensor base is equipped with a plurality of screw hole, the wing limit of the sensor air cock of step shape passes through countersunk screw to be fixed on the roof of sensor base, be equipped with the air cock air chamber that is used for covering waterproof dustproof breather valve in the lower part of sensor air cock, the center that connects at the pagoda of sensor air cock is equipped with the water conservancy diversion hole that can play leading-in air channel effect and communicate with the air cock air chamber, the upper portion lateral wall that the pagoda of sensor air cock connects has cup jointed and has introduced outside atmospheric trachea on the spot in real time, the lower part lateral wall that connects at the pagoda of sensor air cock is equipped with the external screw thread that is used for fixed whole air chamber device, can link to each other with the shell of altimeter.
And a second O-shaped sealing ring is arranged between the top of the top plate of the sensor base and the bottom of the wing edge of the sensor air tap.
A first O-shaped sealing ring is arranged between the top of the sensor pressing ring and the bottom of the top plate of the sensor base.
And a sealing gasket is arranged between the bottom of the upper half part of the waterproof dustproof ventilation valve and the top of the top plate of the sensor base.
The materials of the sensor air tap, the sensor base, the sensor pressing ring and the countersunk head screw are all stainless steel 304, and the shell material of the waterproof dustproof breather valve is stainless steel 316L.
The utility model is composed of a sensor base and a sensor air nozzle which are connected into a whole, a sensor circuit board for fixing a pressure sensor and processing signals is arranged in a base air chamber of the sensor base, and a waterproof dustproof ventilation valve and the sensor air nozzle which plays a role of flow guiding are arranged at the top of the sensor base. After the sensor air faucet is fixed through the external threads on the sensor air faucet, the atmosphere enters the second air chamber where the waterproof and dustproof ventilation valve is located through the flow guide hole of the sensor air faucet, then enters the first air chamber where the pressure sensor is located through the waterproof and dustproof ventilation valve, so that pressure changes act on the sensing surface of the pressure sensor, the chip in the pressure sensor reads the pressure changes, and the pressure changes are converted into electric signals through the processing circuit to be output.
The materials of the sensor base and the sensor air tap are both stainless steel 304, so that the possibility that impurities generated by oxidation and rusting of the materials are attached to the sensing surface of the pressure sensor is avoided, and meanwhile, the sufficient strength of the whole device is ensured.
The waterproof dustproof ventilation valve adopts polytetrafluoroethylene as a ventilation membrane body, the ventilation membrane body is of a microporous structure in a microcosmic mode, and the purposes of water resistance, dust resistance and ventilation are achieved by utilizing the volume size and quantity difference of gas molecules, liquid and dust particles to enable the gas molecules to pass through but not the liquid and the dust to pass through. The utility model can effectively avoid the influence of external moisture and dust on the sensing surface of the pressure sensor, accurately measure the pressure change, realize the purpose of measuring the height change of the pressure sensor, improve the measuring precision and the adaptability of the pressure sensor, has stable performance and simple structure, and can be applied to the height measurement under various severe environments.
Drawings
FIG. 1 is a schematic cross-sectional view of the present invention;
FIG. 2 is a schematic external view of the present invention;
fig. 3 is a top view of fig. 2.
Detailed Description
The present invention will be described in further detail with reference to the following examples and drawings.
The utility model provides a waterproof dustproof air chamber that can breathe freely among height measurement, comprises sensor base 4 and sensor air cock 1 even as an organic whole, and sensor base 4 is open down, "Jiong" shape, is equipped with the base air chamber 9 of big step shape down in sensor base 4, is equipped with on the roof 8 of sensor base 4 with base air chamber 9 intercommunication and lateral wall in-band screw thread base round hole 7, the characteristic is: the upper part in the air chamber 9 of the base is provided with a sensor plate component 3 welded with a pressure sensor on a circuit board, the data of the sensor plate component 3 is led out to the outside through a cable 21, the sensor plate component 3 is upwards pressed by a sensor pressing ring 6, a sealing adhesive layer 10 for sealing the sensor plate component 3 and the sensor pressing ring 6 in the air chamber 9 of the base is filled below the sensor pressing ring 6 in the air chamber 9 of the base, the side wall of the lower half part of the waterproof and dustproof vent valve 2 with a T-shaped cross section is provided with an external thread, the waterproof and dustproof vent valve 2 can play the roles of waterproof, dustproof and breathable, the lower half part of the waterproof and dustproof vent valve 2 is screwed into the round hole 7 of the base from top to bottom, so that the waterproof and dustproof vent valve 2 is located on a top plate 8 of the sensor base 4; the top edge of roof 8 at sensor base 4 is equipped with a plurality of screw hole 15, wing 16 of step-shaped sensor air cock 1 is fixed on roof 8 of sensor base 4 through M2X 4's countersunk screw 14, be equipped with the air cock air chamber 17 that is used for covering waterproof dustproof breather valve 2 in the lower part of sensor air cock 1, be equipped with the water conservancy diversion hole 18 that can play leading-in air channel effect and communicate with air cock air chamber 17 at the center of pagoda joint 19 of sensor air cock 1, the upper portion lateral wall of pagoda joint 19 of sensor air cock 1 has cup jointed the trachea that can introduce outside real-time atmospheric on the spot, be equipped with the external screw thread 20 that is used for fixing whole air chamber device at the lower part lateral wall of pagoda joint 19 of sensor air cock 1, link to each other with the shell of altimeter.
A second O-ring seal 5 is provided between the top of the top plate 8 of the sensor base 4 and the bottom of the wing edge 16 of the sensor nozzle 1.
A first O-ring 13 is provided between the top of the sensor clamp ring 6 and the bottom of the top plate 8 of the sensor mount 4.
A sealing gasket 12 is arranged between the bottom of the upper half part of the waterproof and dustproof breather valve 2 and the top of the top plate 8 of the sensor base 4.
The materials of the sensor air tap 1, the sensor base 4, the sensor pressing ring 6 and the countersunk head screw 14 are all stainless steel 304, and the shell material of the waterproof dustproof ventilation valve 2 is stainless steel 316L.
Claims (4)
1. The utility model provides a waterproof dustproof air chamber that can breathe freely among height measurement, includes the sensor base of under shed, "Jiong" shape, is equipped with the base air chamber of big step shape down in the sensor base, is equipped with on the roof of sensor base with base air chamber intercommunication and lateral wall in-band screw thread base round hole, its characterized in that: the upper part in the base air chamber is provided with a sensor plate part welded with a pressure sensor on a circuit board, the data of the sensor plate part is led out to the outside through a cable, the sensor plate part is upwards compressed by a sensor compression ring, a sealing glue layer for sealing the sensor plate part and the sensor compression ring in the base air chamber is filled below the sensor compression ring in the base air chamber, the side wall of the lower half part of a waterproof dustproof vent valve with a T-shaped cross section is provided with external threads, the waterproof dustproof vent valve can play the roles of waterproofing, dust prevention and ventilation, and the lower half part of the waterproof dustproof vent valve is screwed into a round hole of the base from top to bottom so that the waterproof dustproof vent valve is located on a top plate of the sensor base; the top edge at the roof of sensor base is equipped with a plurality of screw hole, the wing limit of the sensor air cock of step shape passes through countersunk screw to be fixed on the roof of sensor base, be equipped with the air cock air chamber that is used for covering waterproof dustproof breather valve in the lower part of sensor air cock, the center that connects at the pagoda of sensor air cock is equipped with the connector eye that can play leading-in air channel effect and communicate with the air cock air chamber, the upper portion lateral wall that the pagoda of sensor air cock connects has cup jointed and has introduced outside atmospheric trachea on the spot in real time, the lower part lateral wall that connects at the pagoda of sensor air cock is equipped with the external screw thread that is used for fixed whole air chamber device, link to each other with the shell of altimeter.
2. The waterproof, dustproof and breathable air chamber in height measurement according to claim 1, characterized in that: and a second O-shaped sealing ring is arranged between the top of the top plate of the sensor base and the bottom of the wing edge of the sensor air tap.
3. The waterproof, dustproof and breathable air chamber in height measurement according to claim 1, characterized in that: a first O-shaped sealing ring is arranged between the top of the sensor pressing ring and the bottom of the top plate of the sensor base.
4. The waterproof, dustproof and breathable air chamber in height measurement according to claim 1, characterized in that: and a sealing gasket is arranged between the bottom of the upper half part of the waterproof dustproof ventilation valve and the top of the top plate of the sensor base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122010432.9U CN215639404U (en) | 2021-08-25 | 2021-08-25 | Waterproof dustproof air chamber that can breathe freely in height measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122010432.9U CN215639404U (en) | 2021-08-25 | 2021-08-25 | Waterproof dustproof air chamber that can breathe freely in height measurement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215639404U true CN215639404U (en) | 2022-01-25 |
Family
ID=79901793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122010432.9U Active CN215639404U (en) | 2021-08-25 | 2021-08-25 | Waterproof dustproof air chamber that can breathe freely in height measurement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215639404U (en) |
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2021
- 2021-08-25 CN CN202122010432.9U patent/CN215639404U/en active Active
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