CN213148184U - Differential digital barometer - Google Patents
Differential digital barometer Download PDFInfo
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- CN213148184U CN213148184U CN202022557761.0U CN202022557761U CN213148184U CN 213148184 U CN213148184 U CN 213148184U CN 202022557761 U CN202022557761 U CN 202022557761U CN 213148184 U CN213148184 U CN 213148184U
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- static pressure
- air pressure
- pressure bin
- bin
- barometer
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Abstract
The utility model discloses a differential digital barometer belongs to automatic observation and equips technical field. The air pressure collection assembly is an independent assembly structure and comprises three air pressure collection units, a static pressure bin and a static pressure bin cover, wherein the three air pressure collection units are respectively installed in the static pressure bin, and the static pressure bin cover is used for realizing integral sealing of the static pressure bin. The utility model adopts three air pressure acquisition units which are mutually backed up, thereby effectively improving the reliability of the barometer; the air pressure data acquired by the three air pressure acquisition units are used for realizing a differential algorithm, so that the measurement precision is effectively improved.
Description
Technical Field
The utility model relates to a barometer, a differential type digital barometer specifically says, belongs to automatic observation and equips technical field.
Background
At present, a sensor is generally adopted in a mainstream barometer in the market, the measurement error is limited by the sensor, and the measurement error is difficult to be suitable for a high-precision application scene.
The used air pressure sensor adopts a sealed capacitive sensing element for air pressure measurement, and an on-chip temperature sensor is integrated in the sensor for temperature compensation of the air pressure measurement. The internal processor converts the analog quantity of the pressure sensor element and the analog quantity of the temperature sensor element into a 24-bit digital quantity, and the temperature coefficient is compensated for air pressure measurement in real time through processor operation, so that high precision and high accuracy in the whole temperature change range are ensured. This tendency causes the ambient noise to be faithfully reflected by the sensor as well, which is a technical advantage for the sensor, but is a disadvantage for the system product, where the noise should be filtered out.
The sensor faithfully reflects the contradiction between the external noise and the noise in the system product which should be filtered, so that the peripheral hardware cost of the sensor and the data processing complexity are increased, and even the product function is difficult to realize in the data processing due to the uncertainty of the external noise. The pressure sensor is easy to be damaged by the over-range dynamic pressure caused by large external disturbance transient change. Therefore, it is necessary to design a barometer with small measurement error and high reliability.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that overcome prior art defect, provide a measuring error is little, differential digital barometer that the reliability is high.
In order to solve the technical problem, the utility model provides a difference formula digital barometer, gather the subassembly including atmospheric pressure, the subassembly is the assembly structure alone for atmospheric pressure, including at least three atmospheric pressure collection unit, static pressure storehouse and static pressure cang gai, three atmospheric pressure collection unit is installed respectively in the static pressure storehouse, and the static pressure cang gai is used for realizing the whole sealed to the static pressure storehouse.
The utility model discloses in, the waterproof ventilation valve of installation on the static pressure storehouse.
The utility model discloses in, difference formula digital barometer still includes the data processing subassembly, three atmospheric pressure acquisition unit is connected with the data processing subassembly respectively, and the prefabrication has the through wires hole on the static pressure storehouse, and the wiring between air feed pressure acquisition unit and the data processing subassembly is passed, and the through wires hole is sealed behind the line.
The utility model discloses in, difference formula digital barometer still includes key control subassembly, display module, power supply module, power/data transmission interface and network interface, key control subassembly, display module, power supply module, data transmission interface, network interface all are connected with the data processing subassembly.
The utility model discloses in, be equipped with seal assembly between static pressure storehouse and the static pressure cang gai.
Compared with the existing barometer, the beneficial effects of the utility model are that: (1) the utility model adopts three air pressure acquisition units which are mutually backed up, thereby reducing the measurement error and effectively improving the reliability of the barometer; the air pressure data acquired by the three air pressure acquisition units are used for realizing a differential algorithm, so that the measurement precision is effectively improved. (2) The design of static pressure storehouse and the cooperation of waterproof breather valve are used in the subassembly is gathered to the atmospheric pressure of independent assembly, and the air dynamic pressure noise that can effective filtering shun disturbance formed reduces the data processing complexity, reduces the hardware cost, and the overrange dynamic pressure that causes when can also avoiding external disturbance transient change great makes baroceptor damaged. (3) The wiring between the air pressure acquisition unit and the data processing assembly is fixed on the threading hole of the static pressure bin through the sealing material, and on the basis of ensuring the sealing performance of the air pressure acquisition assembly, the wiring between the air pressure acquisition unit and the data processing assembly is more stable and reliable. (4) And a sealing component is arranged between the static pressure bin and the static pressure bin cover, so that the sealing reliability and stability of the static pressure bin can be further improved.
Drawings
Fig. 1 is a schematic structural diagram of a differential digital barometer.
Fig. 2 is a schematic diagram of the connection of the components of the differential digital barometer.
Detailed Description
The present invention will be further clarified by the following description with reference to the attached drawings and specific examples, which should be understood as being merely illustrative of the present invention and not limiting the scope of the present invention, and modifications of various equivalent forms of the present invention by those skilled in the art after reading the present invention, all fall within the scope defined by the appended claims of the present application.
As shown in fig. 1, the differential digital barometer of the present invention comprises an air pressure collecting assembly 1, a data processing assembly 2, a key control assembly 3, a display assembly 4, a power supply assembly 5, a housing 6, a data transmission interface 7 and a network interface 8. The air pressure acquisition assembly 1 is of a single assembly structure and is arranged in the shell 6. The key control component 3, the display component 4, the data transmission interface 7 and the network interface 8 are all mounted on the shell 6 and used for communicating and interacting with the outside. The power supply assembly 5 is mounted in the housing 6 and supplies power to the components of the differential digital barometer. The processor selected for the data processing module 2 is GD32F103RBT6 chip.
The air pressure acquisition assembly 1 comprises three air pressure acquisition units 11, a static pressure bin 12, a static pressure bin cover 14 and a waterproof vent valve 13. The three air pressure acquisition units 11 are respectively arranged in the static pressure cabin 12. The static pressure bin cover 14 covers the static pressure bin 12, and a sealing rubber strip is arranged at the joint of the static pressure bin cover and the static pressure bin 12 to realize the air sealing of the air pressure acquisition assembly 1.
In this embodiment, the air pressure acquisition assembly is assembled alone, the three air pressure acquisition units 11 independently installed in the static pressure bin 12 are respectively connected with the data processing assembly 2, and glue is filled at the outlet holes connected to the static pressure bin 12 between the three air pressure acquisition units for fixing and sealing. Three air pressure acquisition units 11 are respectively connected with the data processing assembly 2, the three air pressure acquisition units 11 can be mutually backed up and used for realizing a differential algorithm, measurement errors are reduced, the reliability and the measurement precision of the barometer are effectively improved, the data processing complexity is greatly reduced, and the hardware cost is reduced. The difference algorithm belongs to the prior art, and the description of the embodiment is not repeated.
And a waterproof vent valve 13 is arranged on the front surface of the static pressure cabin 12. The design of static pressure storehouse 12 and the cooperation of waterproof breather valve 13 are used in the subassembly 1 is gathered to the atmospheric pressure of independent assembly, can effectively filter the air dynamic pressure noise that the instantaneous disturbance formed, reduce the data processing complexity, reduce the hardware cost, and the overranging dynamic pressure that causes when can also avoiding external disturbance instantaneous change great makes baroceptor damaged.
As shown in fig. 1 and 2, the three air pressure collecting units 11, the key control assembly 3, the display assembly 4, the power/data transmission interface 7 and the network interface 8 are all connected to the data processing assembly 2. The power supply assembly 5 provides power to the entire differential digital barometer.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, many modifications and improvements can be made without departing from the principle of the present invention, and these should also be considered as belonging to the protection scope of the present invention.
Claims (5)
1. A differential digital barometer, comprising: the air pressure collection assembly is an independent assembly structure and comprises three air pressure collection units, a static pressure bin and a static pressure bin cover, wherein the three air pressure collection units are respectively installed in the static pressure bin, and the static pressure bin cover is used for realizing integral sealing of the static pressure bin.
2. The differential digital barometer of claim 1, wherein: and a waterproof vent valve is arranged on the static pressure bin.
3. The differential digital barometer of claim 1 or 2, wherein: the three air pressure acquisition units are respectively connected with the data processing assembly, threading holes are prefabricated in the static pressure bin, the wiring between the air pressure acquisition units and the data processing assembly penetrates through the threading holes, and the threading holes are sealed after the wiring.
4. The differential digital barometer of claim 2, wherein: the device comprises a keyboard, a keyboard control component, a display component, a power supply component, a data transmission interface and a network interface, wherein the keyboard control component, the display component, the power supply component, the data transmission interface and the network interface are all connected with the data processing component.
5. The differential digital barometer of claim 1 or 2, wherein: and a sealing component is arranged between the static pressure bin and the static pressure bin cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022557761.0U CN213148184U (en) | 2020-11-06 | 2020-11-06 | Differential digital barometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022557761.0U CN213148184U (en) | 2020-11-06 | 2020-11-06 | Differential digital barometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213148184U true CN213148184U (en) | 2021-05-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022557761.0U Active CN213148184U (en) | 2020-11-06 | 2020-11-06 | Differential digital barometer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213148184U (en) |
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2020
- 2020-11-06 CN CN202022557761.0U patent/CN213148184U/en active Active
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