CN200986482Y - Air pressure sensor - Google Patents
Air pressure sensor Download PDFInfo
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- CN200986482Y CN200986482Y CN 200620048225 CN200620048225U CN200986482Y CN 200986482 Y CN200986482 Y CN 200986482Y CN 200620048225 CN200620048225 CN 200620048225 CN 200620048225 U CN200620048225 U CN 200620048225U CN 200986482 Y CN200986482 Y CN 200986482Y
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Abstract
The utility model discloses an air pressure sensor, which includes a signal input and detection unit, a display and a data processing unit separately connected with the signal input and detection unit and the display. The signal input and detection unit includes a detection controller with a multi-pin port, an air pressure converter, a signal conditioning circuit and a multi-core terminal. The data processing unit includes a data processing controller, an analogue photocoupler, a memory, an I[2]C bus and a USB port separately connected with the data processing controller and a power supply module for the sensor. The detection controller is used to carry out detection of hot swap of the sensor, identification of the sensor, self-test of the sensor and data communication and command interchange with the data processing controller. The detection controller is also used to control online detection and online debugging of the sensor.
Description
Technical field
The utility model relates to a kind of baroceptor of measuring air pressure.
Background technology
Sensor is the feeler that the mankind find out nature information, and the various non electrical quantity information that it can need be found out people change into the information about power that can survey, is the first road threshold of infosystem, provides condition and foundation for people are familiar with and control corresponding object.Sensor technology has more and more important effect in modern society, has developed into one of modern information technologies three big core technologies now.
Traditional sensor (or claiming common sensor) is analog meter instrument or analog computer product of the time.Its design phiolosophy is that external information is transformed into aanalogvoltage or current signal.The problem that it exists is that output amplitude is less, and sensitivity is lower, and function singleness, thereby is called " deaf and dumb sensor " by people.
It is of a great variety that configuration information obtains the sensor (common sensor) in source, specifically comprise photosensitive, temperature-sensitive, power is quick, voltage is quick, magnetosensitive, air-sensitive, wet quick, sound is quick, ray is quick, ion is quick, biology is quick etc., its principle has nothing in common with each other, but no matter be the sensor that adopts which kind of principle, all need measured signal is converted to electric quantity signals such as resistance, inductance, electric capacity at last, because the variation of R, L, C, caused the variation that detects electric current or detect voltage, these analog electrical signals have become the receptible digital signal of computing machine after sampling and A/D conversion.
Along with the progress in epoch, traditional sensor can not satisfy the demand of modern industrial and agricultural production even war.Need to improve its measuring accuracy.
Summary of the invention
The purpose of this utility model provides a kind of intelligent baroceptor that can improve measuring accuracy that possesses data processing, self check, self-correcting, self compensation ability.
2. the technical measures taked of the utility model are: it is comprised: signal input detection unit, display screen, the data processing unit that is connected with display screen with the signal input detection unit respectively;
Comprise in the described signal input detection unit: have the detection controller of multiway interface, pneumatic pressure converter, the signal conditioning circuit that is connected with the pneumatic pressure converter output terminal, respectively with signal conditioning circuit with detect the multicore terminal that controller is connected;
Comprise in the described data processing unit: data processing controller, the analog photoelectricity coupling mechanism, storer, the I that are connected with data processing controller respectively
2C bus and USB interface place the power module of supplying probe power on the data processing unit.
Described pneumatic pressure converter is (common) baroceptor commonly used that air pressure signal is converted to voltage signal.
As above-mentioned structure of the present utility model, after the sensor starting, pneumatic pressure converter is converted to voltage signal with tested air pressure signal and is input in the signal conditioning circuit; Signal conditioning circuit with its magnitude of voltage be converted to treatable magnitude of voltage and be converted to unified voltage signal according to the standard value of defined, i.e. normalization, general-25V～25V is normalized to 0～5V usually; Pass through multicore terminal and the I on data processing unit through the voltage signal after the normalization
2The C bus enters in the data processing controller; Data processing controller at first converts the voltage analog signal that receives to digital signal, compare then and calculate pairing measured value, again that it is corresponding measured value demonstrates by display screen, and deposits that store memory stores up in and export by USB interface.Place the detection controller in the signal input detection unit to have multiway interface (as jtag interface), storage inside has the various information of sensor, as the identify label of sensor, standard signal value, identification code etc., after the sensor starting, it can online detection and on-line debugging by the multiway interface, and its is responsible for carrying out with the data processing controller on data processing unit the exchange of data communication and instruction; It finishes the detection of sensor hot plug, the identification of sensor identity and self-checking function, and the operation conditions of detecting sensor and adjustment sensor are at optimal operational condition.It is equivalent to the control center of integral sensors, and can liken is that one " brain " has been installed on the sensor of a tradition (common).Be connected in analog photoelectricity coupling mechanism on the data processing controller and can isolate out interference from the simulating signal on the power module.Measuring accuracy as the utility model baroceptor of above-mentioned structure can improve at least 10% (generally being more than 10%) than the measuring accuracy of above-mentioned traditional sensors.
Description of drawings
Fig. 1 is the structural representation of the utility model baroceptor.
Embodiment
Further specify architectural feature of the present utility model below in conjunction with accompanying drawing.
As shown in Figure 1, the utility model baroceptor comprises: signal input detection unit 1, display screen 3, the data processing unit 2 that is connected with display screen 3 with signal input detection unit 1 respectively;
Comprise in the described signal input detection unit 1: the detection controller 101 that has multiway interface 102, pneumatic pressure converter 105, the signal conditioning circuit 104 that is connected with pneumatic pressure converter 105 output terminals, respectively with signal conditioning circuit 104 with detect the multicore terminal 103 that controller 101 is connected;
Comprise in the described data processing unit 2: data processing controller 201, the analog photoelectricity coupling mechanism 204 that is connected with data processing controller 201, storer 205, I respectively
2 C bus 206 and USB interface 207 place the power module 202,203 of supplying probe power on the data processing unit 2.
In the present embodiment, as shown in Figure 1, the power supply of supply sensor has two power modules 202,203.One of them power module 203 uses for specializing in data processing controller 201.
In the present embodiment, it is described that to place the detection controller 101 in the signal input detection unit 1 and place the data processing controllers in the data processing unit 2 all be to have various ports, as ports such as 12C, SPI, UART, PCA and as the multiway interface of jtag interface, embedded A/D converter (D/A sensor) and D/A converter (D/A), contain mixed signal SOC, the C8051F Series chip chip of Silicon Laboratories.This chip power-consumption is smaller, by the jtag interface of multiway, makes sensor can realize online detection and on-line debugging; This chip has high-frequency clock, can effectively improve the reaction velocity of system.Contain the identity information of sensor at this chip internal memory, self check information, and check code etc.
In the present embodiment, described multicore terminal 103 adopts 10 core S terminals.
In the present embodiment, described pneumatic pressure converter-employing is converted to air pressure signal the baroceptor of the MPX5700 type of using (common) always of voltage signal.In the present embodiment, be to be that OKPa is converted to voltage 0V with air pressure, be that 700Kpa is converted to voltage 5V with air pressure.
Described analog photoelectricity coupling mechanism 204 adopts HCNR200 analog photoelectricity coupling mechanism, and the interference of isolation mode analog signal fully prevents the impact of the simulating signal of power module to controller.
Claims (5)
1. baroceptor is characterized in that comprising: signal input detection unit, display screen, the data processing unit that is connected with display screen with the signal input detection unit respectively;
Comprise in the described signal input detection unit: have the detection controller of multiway interface, pneumatic pressure converter, the signal conditioning circuit that is connected with the pneumatic pressure converter output terminal, respectively with signal conditioning circuit with detect the multicore terminal that controller is connected;
Comprise in the described data processing unit: data processing controller, the analog photoelectricity coupling mechanism, storer, the I that are connected with data processing controller respectively
2C bus and USB interface place the power module of supplying probe power on the data processing unit.
2. baroceptor according to claim 1 is characterized in that placing the detection controller in the signal input detection unit is the singlechip chip that contains mixed signal that has the embedded A/D converter of various ports.
3. baroceptor according to claim 1 is characterized in that placing the data processing controller in the data processing unit is the singlechip chip that contains mixed signal that has the embedded A/D converter of various ports.
4. baroceptor according to claim 1 is characterized in that described pneumatic pressure converter is the baroceptor that air pressure signal is converted to voltage signal.
5. baroceptor according to claim 1 is characterized in that placing two power modules are arranged on the data processing unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620048225 CN200986482Y (en) | 2006-11-28 | 2006-11-28 | Air pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620048225 CN200986482Y (en) | 2006-11-28 | 2006-11-28 | Air pressure sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200986482Y true CN200986482Y (en) | 2007-12-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620048225 Expired - Fee Related CN200986482Y (en) | 2006-11-28 | 2006-11-28 | Air pressure sensor |
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| Country | Link |
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| CN (1) | CN200986482Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104657095A (en) * | 2013-11-18 | 2015-05-27 | 惠科电子（深圳）有限公司 | Multi-displayer expansion method and system |
| CN105588683A (en) * | 2014-11-03 | 2016-05-18 | 中国航空工业集团公司西安飞机设计研究所 | Design method for pressure increasing and decreasing speed measurement apparatus |
| CN105806542A (en) * | 2016-04-29 | 2016-07-27 | 深圳市宇朔晶合微机电技术有限公司 | Air pressure sensor |
-
2006
- 2006-11-28 CN CN 200620048225 patent/CN200986482Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104657095A (en) * | 2013-11-18 | 2015-05-27 | 惠科电子（深圳）有限公司 | Multi-displayer expansion method and system |
| CN104657095B (en) * | 2013-11-18 | 2017-10-31 | 惠科股份有限公司 | A kind of multi-display extended method and system |
| CN105588683A (en) * | 2014-11-03 | 2016-05-18 | 中国航空工业集团公司西安飞机设计研究所 | Design method for pressure increasing and decreasing speed measurement apparatus |
| CN105806542A (en) * | 2016-04-29 | 2016-07-27 | 深圳市宇朔晶合微机电技术有限公司 | Air pressure sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071205 Termination date: 20091228 |