CN201528388U - Digital camera with function of elevation measurement - Google Patents
Digital camera with function of elevation measurement Download PDFInfo
- Publication number
- CN201528388U CN201528388U CN2009203118635U CN200920311863U CN201528388U CN 201528388 U CN201528388 U CN 201528388U CN 2009203118635 U CN2009203118635 U CN 2009203118635U CN 200920311863 U CN200920311863 U CN 200920311863U CN 201528388 U CN201528388 U CN 201528388U
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- temperature
- humidity
- pressure
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- digital camera
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- Measuring Fluid Pressure (AREA)
Abstract
The utility model discloses a digital camera which has the function of elevation measurement, and is simple in structure and convenient for operation. The digital camera comprises a digital signal processor (DSP) and a display interface, wherein the DSP is internally provided with temperature, humidity and pressure computing processing units; a pressure analog signal channel consists of a pressure sensor, a pressure computing amplifier and a pressure A/D converter which are sequentially connected with each other; a temperature analog signal channel consists of the temperature sensor, the temperature computing amplifier and the temperature A/D converter which are sequentially connected with each other; a humidity analog signal channel consists of a humidity sensor, a humidity computing amplifier and a humidity A/D converter which are sequentially connected with each other; and the temperature A/D converter, the humidity A/D converter and the pressure A/D converter are respectively connected with interfaces of the temperature, the humidity and the pressure computing processing units in the DSP. The digital camera is added with the function of elevation measurement, thus bring more convenience to consumers.
Description
Technical field
The utility model relates to domestic digital camera, more particularly, relates to a kind of digital camera that has the height above sea level measurement function.
Background technology
Digital camera is of a great variety in the market, and traditional digital camera can only satisfy the basic demand of people to taking.Along with the functional requirement more diversification of consumer to camera, how further to develop the hommization function of camera, developing camera more service project becomes the research topic that the personage of each side seeks.Because the consumer climbed the mountain or to the higher place of height above sea level through regular meeting in when tourism; and digital camera is in being usually used in tourism process; if can bring a lot of convenience to the consumer, and also there is not the height above sea level measurement function to be dissolved into product in the digital camera on the present market so camera has the height above sea level measurement function.
The utility model content
The purpose of this utility model is to people provide a kind of simple in structure, the easy to operate digital camera that has the height above sea level measurement function.
The utility model has the digital camera of height above sea level measurement function, be achieved by following technical proposals, comprise digital signal processor (DSP) and display interface, it is characterized in that, temperature, humidity and pressure operation processing unit are set in the described digital signal processor; The pressure simulation signalling channel is made up of the pressure sensor, pressure operational amplifier and the pressure A/D converter that connect successively, the temperature analog signal passage is made up of the temperature sensor, temperature operational amplifier and the temperature A/D converter that connect successively, and the humidity analog signal channel is made up of the humidity sensor, humidity operational amplifier and the humidity A/D converter that connect successively; Described temperature A/D converter, humidity A/D converter and pressure A/D converter are connected with separately operation processing unit interface among the DSP respectively.
The utility model adds a pressure sensor on camera, a temperature sensor and a humidity sensor, and the altitude information that will draw at last is by the LCD demonstration of camera.The utility model is that digital camera has increased the height above sea level measurement function, brings more convenience to the consumer.
Description of drawings
Fig. 1 is the utility model structured flowchart.
Fig. 2 is the flow chart of height above sea level test cell operation.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in detail.
As shown in Figure 1: temperature, humidity and pressure operation processing unit are set in the digital signal processor; The pressure simulation signalling channel is made up of the pressure sensor, pressure operational amplifier and the pressure A/D converter that connect successively, the temperature analog signal passage is made up of the temperature sensor, temperature operational amplifier and the temperature A/D converter that connect successively, and the humidity analog signal channel is made up of the humidity sensor, humidity operational amplifier and the humidity A/D converter that connect successively; Described temperature A/D converter, humidity A/D converter and pressure A/D converter are connected with separately operation processing unit interface among the DSP respectively.
Atmospheric pressure value Anywhere always successively decreases along with the increase of height above sea level.Survey factually, in ground floor, every liter of 100m highly, air pressure on average reduces 12.7hPa, at high level then less than this numerical value.Determining atmospheric density size and the quantitative relationship of air pressure with height change, generally is applied statics equation and the high equation of pressure.When the not too thick and precision prescribed of gas-bearing formation is not too high, be fit to select for use the statics equation, can estimate the quantitative relationship of air pressure and altitude roughly.If the gas-bearing formation height change scope of research is very big, levels temperature in the gas column, when variable density is remarkable can be with pressing high equation.Use when travelling mountain-climbing in view of height above sea level measurement function of the present utility model is applicable to the consumer, press high equation so adopt:
Z2-Z1＝18400(1+t/273)log(P1/P2)
P1, P2 are respectively the atmospheric pressure values of height Z1, Z2 in the formula, and t is a Celsius temperature scale.
In addition, this formula is handled atmosphere as dry air, but when water in air vapour content more for a long time, just must be with the temperature in the virtual temperature replacement formula.Virtual temperature is under same pressure, when dry air density is equal to density of moist air, and the temperature that dry air should have.The virtual temperature perseverance is high than normal temperature, and following equation can be represented its approximation:
Tv＝(1+0.61q)T
Tv is a damp-warm syndrome in the formula, and T is a temperature, and q is a specific humidity.
As shown in Figure 2, utilize pressure sensor and temperature, humidity sensor, air pressure, the temperature and humidity of induction external environment, and air pressure and temperature, moisture signal converts the signal of telecommunication to, the transmission that realizes analog electrical signal by operational amplifier with amplify to become the electrical signal conversion of simulating digital signal to reach among the DSP by A/D converter then to handle, and judge according to the humidity value that records by DSP, be directly read temperature value carry out calculation process or earlier will temperature value convert after carry out calculation process again.The altitude information that draws at last shows by LCD.
Claims (1)
1. a digital camera that has the height above sea level measurement function comprises digital signal processor and display interface, it is characterized in that, temperature, humidity and pressure operation processing unit are set in the described digital signal processor; The pressure simulation signalling channel is made up of the pressure sensor, pressure operational amplifier and the pressure A/D converter that connect successively, the temperature analog signal passage is made up of the temperature sensor, temperature operational amplifier and the temperature A/D converter that connect successively, and the humidity analog signal channel is made up of the humidity sensor, humidity operational amplifier and the humidity A/D converter that connect successively; Described temperature A/D converter, humidity A/D converter and pressure A/D converter are connected with separately operation processing unit interface among the DSP respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203118635U CN201528388U (en) | 2009-09-29 | 2009-09-29 | Digital camera with function of elevation measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203118635U CN201528388U (en) | 2009-09-29 | 2009-09-29 | Digital camera with function of elevation measurement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201528388U true CN201528388U (en) | 2010-07-14 |
Family
ID=42519669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203118635U Expired - Fee Related CN201528388U (en) | 2009-09-29 | 2009-09-29 | Digital camera with function of elevation measurement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201528388U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102175215A (en) * | 2011-02-24 | 2011-09-07 | 上海德科电子仪表有限公司 | Vehicle-mounted altitude monitoring device and method |
| WO2015123178A1 (en) * | 2014-02-14 | 2015-08-20 | Nextnav, Llc | Systems and methods for improved accuracy in determining altitude from pressure |
| US10649090B2 (en) | 2010-11-12 | 2020-05-12 | Nextnav, Llc | Wide area positioning system |
-
2009
- 2009-09-29 CN CN2009203118635U patent/CN201528388U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10649090B2 (en) | 2010-11-12 | 2020-05-12 | Nextnav, Llc | Wide area positioning system |
| CN102175215A (en) * | 2011-02-24 | 2011-09-07 | 上海德科电子仪表有限公司 | Vehicle-mounted altitude monitoring device and method |
| WO2015123178A1 (en) * | 2014-02-14 | 2015-08-20 | Nextnav, Llc | Systems and methods for improved accuracy in determining altitude from pressure |
| US9829313B2 (en) | 2014-02-14 | 2017-11-28 | Nextnav, Llc | Systems and methods for improved accuracy in determining altitude from pressure |
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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: 20100714 Termination date: 20130929 |