CN205981529U - Wireless pressure measurement - Google Patents
Wireless pressure measurement Download PDFInfo
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- CN205981529U CN205981529U CN201620736038.XU CN201620736038U CN205981529U CN 205981529 U CN205981529 U CN 205981529U CN 201620736038 U CN201620736038 U CN 201620736038U CN 205981529 U CN205981529 U CN 205981529U
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- pressure
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- sensor
- detecting device
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Abstract
The utility model relates to an aircushion vehicle pressure measurement, especially, relate to a wireless pressure measurement, can include the shell, the division board, first gauge pressure sensor, press the sensor extremely, a weighing sensor and a temperature sensor, detection circuitry, treater and wireless communication device, the space separation of division board in with the shell is a first sealing chamber and a second sealing chamber, the inside storage of first sealing chamber has the atmospheric pressure air, first gauge pressure sensor settings is in the surface of shell, be connected through a first air duct and first sealing chamber, press sensor settings extremely in first sealing chamber, temperature sensor sets up in first sealing chamber, detection circuitry sets up in the second sealing chamber, respectively with first gauge pressure sensor, press sensor and temperature sensor to connect extremely, the treater is connected with detection circuitry, wireless communication device is connected with the treater, when satisfying the pressure detection precision, the wiring of sensor has still been simplified, the interference of ambient temperature to the pressure detection result has been got rid of.
Description
Technical field
This utility model is related to a kind of aircushion vehicle pressure-detecting device, more particularly, to a kind of wireless type pressure-detecting device.
Background technology
Aircushion vehicle air flue and gasbag pressure test are extremely important, and it is directly connected to the state that hovers of aircushion vehicle.Air bag and
Airway pressure belongs to small range, about several kPa about.Test much cannot be met according to its certainty of measurement of absolute pressure sensor
Require.If using gauge pressure transducer although test scope and measuring accuracy requirement can be met, but gauge pressure transducer need by
The airway of sensor rear end extends to the stable ambient external environment of the outside relative barometric pressure of tested air-flow, can cause sensor cloth
Put loaded down with trivial details.If using the sensor of sealing gauge pressure, it is suitable for and the constant test environment of relative temperature, is not suitable for aircushion vehicle dynamic
Stress test.
Utility model content
The utility model proposes a kind of wireless type pressure-detecting device, it is applied to detect the air cushion pressure of aircushion vehicle；Bag
Include：
Shell；
Demarcation strip, is arranged at described inside the shell, and the space of described inside the shell is divided into one first closed chamber and one second
Closed chamber；
Air pressure within described first closed chamber is a normal atmosphere；
First gauge pressure transducer, is arranged at the outer surface of described shell, by one first airway and described first sealing
Room connects；
Absolute pressure sensor, is arranged at described first sealing indoor；
Temperature sensor, is arranged at described first sealing indoor；
Testing circuit, is arranged at described second sealing indoor, respectively with described first gauge pressure transducer, described absolute pressure sensing
Device and described temperature sensor connect；
Processor, is connected with described testing circuit；
Wireless communication apparatus, are connected with described processor.
Above-mentioned wireless type pressure-detecting device, wherein, described testing circuit includes：
First pressure testing circuit, is arranged at described second sealing indoor, with described first gauge pressure transducer electrical connection；
Absolute pressure testing circuit, is arranged at described second sealing indoor, with the electrical connection of described absolute pressure sensor；
Temperature sensing circuit, is arranged at described second sealing indoor, with described temperature sensor electrical connection；
Described first pressure testing circuit, described absolute pressure testing circuit and described temperature sensing circuit respectively with described process
Device connects.
Above-mentioned wireless type pressure-detecting device, described first gauge pressure transducer is arranged at the sidepiece of described shell；Described
Testing circuit also includes second pressure testing circuit；Wherein, also include：
Second gauge pressure transducer, is arranged at the side that described shell is not provided with described first gauge pressure transducer, by one
Two airways are connected with described first closed chamber；
Described second gauge pressure transducer is connected with described second pressure testing circuit；
Described second pressure testing circuit is connected with described processor.
Above-mentioned wireless type pressure-detecting device, wherein, described second sealing interior is provided with a circuit board；
Described testing circuit is arranged on described circuit board.
Above-mentioned wireless type pressure-detecting device, wherein, described wireless communication apparatus include：
Hemispherical antenna, is arranged at the outer surface of described shell.
Above-mentioned wireless type pressure-detecting device, wherein, also includes：
Controlling switch, is arranged at the outside of described shell, is connected with described processor；
First instruction lamp assembly, including one first control chip and a display lamp；
Described first control chip is connected with described processor；
Described first display lamp is arranged at the outer surface of described shell, is connected with described first control chip with described
Luminous under the control of one control chip.
Above-mentioned wireless type pressure-detecting device, wherein, also includes：
Second instruction lamp assembly, including one second control chip and one second display lamp；
Described second control chip is connected with described wireless communication apparatus；
Described second display lamp is arranged at the outer surface of described shell, is connected with described second control chip with described
Luminous under the control of two control chips.
Above-mentioned wireless type pressure-detecting device, wherein, described demarcation strip is a thermal insulation board.
Beneficial effect：The utility model proposes wireless type pressure-detecting device combine gauge pressure transducer and absolute pressure sensing
The advantage of device, while meeting pressure detecting precision, also simplify the wiring of sensor, eliminates ambient temperature and pressure is examined
Survey the interference of result.
Brief description
Fig. 1 is the structural representation of the wireless type pressure-detecting device in this utility model embodiment；
Fig. 2 is the electrical connection schematic diagram of the wireless type pressure-detecting device in this utility model embodiment；
Fig. 3 is the internal structure schematic diagram of the absolute pressure testing circuit in this utility model embodiment.
Specific embodiment
In conjunction with accompanying drawing, this utility model specific embodiment is described further.
In a preferred embodiment, as depicted in figs. 1 and 2 it is proposed that a kind of wireless type pressure-detecting device, permissible
It is applied to detect the air cushion pressure of aircushion vehicle；Can include：
Shell 110；
Demarcation strip 120, can be arranged in shell 110, the space in shell 110 can be divided into one first closed chamber
111 and one second closed chamber 112；
Air pressure within first closed chamber 111 can be a normal atmosphere；
First gauge pressure transducer 131, can be arranged at the outer surface of shell 110, can by one first airway 113 with
First closed chamber 111 connects；
Absolute pressure sensor 140, can be arranged in the first closed chamber 111；
Temperature sensor 150, can be arranged in the first closed chamber 112；
Testing circuit 160, can be arranged in the second closed chamber 112, can respectively with the first gauge pressure transducer 131, absolutely
Pressure sensor 140 and temperature sensor 150 connect；
Processor 170, can be connected with testing circuit 160；
Wireless communication apparatus 180, can be connected with processor 170.
Wherein, shell 110 is also provided with an air valve 115, during unlatching, makes the first closed chamber 112 memory storage
Air exchanges conducting with outside atmosphere, is once turned off using front unlatching, can by pressure for atmospheric pressure air seal first
In closed chamber 112；This wireless type pressure-detecting device can also include charging inlet 199 as shown in Figure 1, and this charging inlet can
With an integrated communication interface simultaneously, for example, it is integrated with a USB interface.
In a preferred embodiment, as depicted in figs. 1 and 2, testing circuit 160 can include：
First pressure testing circuit 161, can be arranged in the second closed chamber 112, can be with the first gauge pressure transducer 131
Electrical connection；
Absolute pressure testing circuit 162, can be arranged in the second closed chamber 112, electrically can connect with absolute pressure sensor 140
Connect；
Temperature sensing circuit 163, can be arranged in the second closed chamber 112, electrically can connect with temperature sensor 150
Connect；
First pressure testing circuit 161, absolute pressure testing circuit 162 and temperature sensing circuit 163 can respectively with processor
170 connections.
It is preferable that as shown in figure 1, the first gauge pressure transducer 131 can be arranged at the side of shell 110 in above-described embodiment
Portion；Testing circuit 160 can also include second pressure testing circuit 164；This wireless type pressure-detecting device can also include：
Second gauge pressure transducer 132, can be arranged at the side that shell 110 is not provided with the first gauge pressure transducer 161, and leading to can
It is connected with the first closed chamber 111 with crossing one second airway 114；
Second gauge pressure transducer 132 can be connected with second pressure testing circuit 164；
Second pressure testing circuit 164 can be connected with processor 170.
In a preferred embodiment, as shown in figure 1, a circuit board 115 can be provided with the second closed chamber 112；
Testing circuit 160 can be arranged on circuit board 115.
Wherein, it is also provided with a cell panel 118 below circuit board 115, for for each sensor and circuit board 115
Deng power supply.
In a preferred embodiment, as shown in figure 1, wireless communication apparatus 180 can include：
Hemispherical antenna 181, can be arranged at the outer surface of shell 110.
In a preferred embodiment, as depicted in figs. 1 and 2, this wireless type pressure-detecting device can also include：
Controlling switch 191, can be arranged at the outside of shell 110, can be connected with processor 170；
First instruction lamp assembly 192, can include one first control chip 193 and a display lamp 194；
First control chip 193 can be connected with processor 170；
First display lamp 194 can be arranged at the outer surface of shell 110, can be connected with the first control chip 193 with
Luminous under the control of the first control chip 193.
In a preferred embodiment, as depicted in figs. 1 and 2, this wireless type pressure-detecting device can also include：
Second instruction lamp assembly 195, can include one second control chip 196 and one second display lamp 197；
Second control chip 196 can be connected with wireless communication apparatus 180；
Second display lamp 197 can be arranged at the outer surface of shell 110, is connected with the second control chip 196 with second
Luminous under the control of control chip 196.
In a preferred embodiment, as shown in figure 1, demarcation strip 120 can be a thermal insulation board.
Preferably, as Fig. 3 shows the internal structure of absolute pressure testing circuit, the rectifier bridge that can include being sequentially connected,
Preamplifier, wave filter and analog-digital converter.
Wherein, the indoor atmospheric pressure temperature compensation algorithm of the first sealing：If node operating temperature range is, work
When making, ambient temperature is, unit isIf absolute pressure sensor output pressure is, from Clapyron Equation：,
?In the range of at least take 6 measuring points to carry out data and curves calibration.
For positive stroke absolute pressure sensor output valve,For revesal absolute pressure sensor output valve.
Before wireless type pressure-detecting device is installed, open air valve so that closed bin is identical with external ambient atmosphere, afterwards
Close air valve, be now zero state when testing.Recording temperature by temperature sensor is, then absolute pressure sensor output
For, gauge pressure transducer is output as 0（First gauge pressure transducer and the second gauge pressure transducer can be averaged
Substitute into and calculate, but without limitation, other cooperations and calculation also should be considered to be encompassed in this utility model）.
In test process, if gauge pressure transducer is output as, understand according to gauge pressure transducer design principle, if gauge pressure passes
Sensor enclosed watch pressure side pressure increasesWhen, then in the case of same measured value, the actual pressure data recording will reduce.
Therefore need the gauge pressure data recording is modified, modification method is exactly to increase or decrease corresponding absolute pressure on the basis of measured value
The calculated value of sensor.Computing formula is as follows：
WhenWhen, then illustrate, sealing room pressure increased than initial pressure, then for gauge pressure transducer,
Measured value will reduce than actual value, therefore need to measured value compensation.WhenWhen, then illustrate, seal room pressure
Reduce than initial pressure, then for gauge pressure transducer, measured value will increased than actual value, therefore needs are right
Measured value compensation, whenWhen, then illustrate, sealing indoor temperature does not change, therefore the indoor pressure of sealing does not also occur
Change, so the measured value of gauge pressure transducer is actual value.
Preferably, this device can further include：Monitoring module（In figure is not shown）, by integrated circuit interface electricity
Road（IIC, Integrated Interface Circuit）Or UART Universal Asynchronous Receiver Transmitter（UART, Universal
Asynchronous Receiver Transmitter）Interface is connected with power module, for gathering voltage, the electric current of power supply
And temperature information, sent by wireless communication module, to realize the real-time prison to supply voltage, electric current and temperature conditionss
Control, the generation preventing power module from overcharging and owing electrical phenomena, when supply voltage is less than the voltage threshold pre-setting, by no
Line communication module sends a notification message, to change battery in time and to charge for battery.
Preferably, this device does not need to be constantly in working condition, sense always and gathers analog information, in order to reduce
The power consumption of sensor, can also be according to external server（Host computer）The instruction issuing and parameter, configure to measurement module,
For example, in external server issues instruction and parameter, carry and start collection, stop acquisition information.By channel radio
News device transmits to processor so that processor operates according to the information execution receiving is corresponding, control this device beginning and
Stop.Group number, channel setup information can also be carried in instruction and parameter.Further, it is also possible to by instruction setting sample rate,
The information such as port number, passage reset, inquiry electricity.
In this patent embodiment, can be using the System on Chip/SoC integrating processor and wireless communication apparatus（As
CC2430）Realize data processing and transmission.This System on Chip/SoC includes the DSSS of high-performance 2.4GHz（DSSS,
Direct Sequence Spread Spectrum）RF transceiver and compact efficient 8051 controllers of technical grade, energy
The 2.4GHz ISM band enough improving performance and meeting based on ZigBee applies the requirement to low cost, low-power consumption, permissible
Meet the requirement executing to disposal ability of protocol stack, network and application software.
In the transmission mode, bit mapping and modulation are that the specification according to IEEE 802.15.4 completes to said system chip
's.Modulation and spread spectrum are completed by digital form.Meanwhile, CC2430 is also integrated with the peripheral hardware for User Defined application.?
In CC2430, it is integrated with an enhanced data confidentiality agreement（AES, Advanced Encryption Standard）Association is processed
Device, to support needed for IEEE802.15.4 MAC safety（128 keywords）The operation of AES, to realize as few as possible accounting for
Use microcontroller.
By technique scheme it is achieved that the pressure being measured using gauge pressure transducer in aircushion vehicle air bag and air flue is surveyed
Amount.During measurement, whole device is directly arranged at measuring point it is not necessary to draw holding wire and airway, therefore truly
Achieve with wireless type measuring pressure, it is to avoid the impact to Air-cushion flow field such as signal, airway, can also avoid environment temperature simultaneously
The impact to measuring accuracy for the degree.
In sum, the utility model proposes a kind of wireless type pressure-detecting device, can include shell, demarcation strip,
First gauge pressure transducer, absolute pressure sensor, temperature sensor, testing circuit, processor and wireless communication apparatus, demarcation strip is arranged
In inside the shell, the space of inside the shell is divided into one first closed chamber and one second closed chamber, the first closed chamber storage inside has
Air pressure is the air of normal atmosphere, and the first gauge pressure transducer is arranged at the outer surface of shell, by one first airway and the
One closed chamber connects, and absolute pressure sensor is arranged at the first sealing interior, and temperature sensor is arranged at the first sealing interior, detection electricity
It is indoor that road is arranged at the second sealing, is connected with the first gauge pressure transducer, absolute pressure sensor and temperature sensor respectively, processor and
Testing circuit connects, and wireless communication apparatus are connected with processor, while meeting pressure detecting precision, also simplify sensor
Wiring, eliminate the interference to pressure sensing result for the ambient temperature.
By explanation and accompanying drawing, give the exemplary embodiments of specific embodiment, based on this utility model spirit, also may be used
Make other conversions.Although above-mentioned utility model provides embodiment, however, these contents are not intended as limiting to.
For a person skilled in the art, after reading described above, various changes and modifications undoubtedly will be evident that.
Therefore, appending claims should regard the whole variations and modifications covering true intention of the present utility model and scope as.
Any and all scope of equal value and content in Claims scope, are all considered as still belonging to intention of the present utility model and model
In enclosing.
Claims (8)
1. a kind of wireless type pressure-detecting device, is applied to detect the air cushion pressure of aircushion vehicle；It is characterized in that, including：
Shell；
Demarcation strip, is arranged at described inside the shell, and the space of described inside the shell is divided into one first closed chamber and one second sealing
Room；
Air pressure within described first closed chamber is a normal atmosphere；
First gauge pressure transducer, is arranged at the outer surface of described shell, by one first airway with described first closed chamber even
Connect；
Absolute pressure sensor, is arranged at described first sealing indoor；
Temperature sensor, is arranged at described first sealing indoor；
Testing circuit, it is indoor to be arranged at described second sealing, respectively with described first gauge pressure transducer, described absolute pressure sensor and
Described temperature sensor connects；
Processor, is connected with described testing circuit；
Wireless communication apparatus, are connected with described processor.
2. wireless type pressure-detecting device according to claim 1 is it is characterised in that described testing circuit includes：
First pressure testing circuit, is arranged at described second sealing indoor, with described first gauge pressure transducer electrical connection；
Absolute pressure testing circuit, is arranged at described second sealing indoor, with the electrical connection of described absolute pressure sensor；
Temperature sensing circuit, is arranged at described second sealing indoor, with described temperature sensor electrical connection；
Described first pressure testing circuit, described absolute pressure testing circuit and described temperature sensing circuit are respectively with described processor even
Connect.
3. wireless type pressure-detecting device according to claim 2, described first gauge pressure transducer is arranged at described shell
Sidepiece；Described testing circuit also includes second pressure testing circuit；It is characterized in that, also include：
Second gauge pressure transducer, is arranged at the side that described shell is not provided with described first gauge pressure transducer, leads by one second
Trachea is connected with described first closed chamber；
Described second gauge pressure transducer is connected with described second pressure testing circuit；
Described second pressure testing circuit is connected with described processor.
4. wireless type pressure-detecting device according to claim 1 is it is characterised in that described second sealing interior is provided with
One circuit board；
Described testing circuit is arranged on described circuit board.
5. wireless type pressure-detecting device according to claim 1 is it is characterised in that described wireless communication apparatus include：
Hemispherical antenna, is arranged at the outer surface of described shell.
6. wireless type pressure-detecting device according to claim 1 is it is characterised in that also include：
Controlling switch, is arranged at the outside of described shell, is connected with described processor；
First instruction lamp assembly, including one first control chip and a display lamp；
Described first control chip is connected with described processor；
Described first display lamp is arranged at the outer surface of described shell, is connected with described first control chip with the described first control
Luminous under the control of coremaking piece.
7. wireless type pressure-detecting device according to claim 1 is it is characterised in that also include：
Second instruction lamp assembly, including one second control chip and one second display lamp；
Described second control chip is connected with described wireless communication apparatus；
Described second display lamp is arranged at the outer surface of described shell, is connected with described second control chip with the described second control
Luminous under the control of coremaking piece.
8. wireless type pressure-detecting device according to claim 1 is it is characterised in that described demarcation strip is a thermal insulation board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620736038.XU CN205981529U (en) | 2016-07-13 | 2016-07-13 | Wireless pressure measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620736038.XU CN205981529U (en) | 2016-07-13 | 2016-07-13 | Wireless pressure measurement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205981529U true CN205981529U (en) | 2017-02-22 |
Family
ID=58024196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620736038.XU Active CN205981529U (en) | 2016-07-13 | 2016-07-13 | Wireless pressure measurement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205981529U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107514358A (en) * | 2017-09-26 | 2017-12-26 | 无锡市凯丰压力表有限公司 | A kind of pressure gauge for compression pump |
| CN107966236A (en) * | 2018-01-18 | 2018-04-27 | 深圳市永盟电子科技限公司 | Pressure sensor, sphygmomanometer and pressure sensor manufacture method |
| CN112213028A (en) * | 2020-10-13 | 2021-01-12 | 北京航天发射技术研究所 | Device and method for identifying absolute gauge pressure sensor |
-
2016
- 2016-07-13 CN CN201620736038.XU patent/CN205981529U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107514358A (en) * | 2017-09-26 | 2017-12-26 | 无锡市凯丰压力表有限公司 | A kind of pressure gauge for compression pump |
| CN107966236A (en) * | 2018-01-18 | 2018-04-27 | 深圳市永盟电子科技限公司 | Pressure sensor, sphygmomanometer and pressure sensor manufacture method |
| CN112213028A (en) * | 2020-10-13 | 2021-01-12 | 北京航天发射技术研究所 | Device and method for identifying absolute gauge pressure sensor |
| CN112213028B (en) * | 2020-10-13 | 2022-04-15 | 北京航天发射技术研究所 | Device and method for identifying absolute gauge pressure sensor |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |