CN205157076U - Low -cost temperature monitoring system based on intelligent Mobile Terminal - Google Patents
Low -cost temperature monitoring system based on intelligent Mobile Terminal Download PDFInfo
- Publication number
- CN205157076U CN205157076U CN201520895258.2U CN201520895258U CN205157076U CN 205157076 U CN205157076 U CN 205157076U CN 201520895258 U CN201520895258 U CN 201520895258U CN 205157076 U CN205157076 U CN 205157076U
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- China
- Prior art keywords
- mobile terminal
- intelligent mobile
- circuit board
- thermistor
- resistance
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- Expired - Fee Related
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Abstract
The utility model provides a low -cost temperature monitoring system based on intelligent Mobile Terminal, including power, resistance, thermistor, earthing terminal, arduino circuit board, intelligent Mobile Terminal, the power source of arduino circuit board is connected to power, resistance, thermistor, earthing terminal series connection, power, and the GND interface of arduino circuit board is connected to the earthing terminal, is provided with the bleeder circuit end A0 that takes a percentage between resistance and the thermistor, and bleeder circuit takes a percentage, and 0, arduino at analog input end circuit board that end A0 connects arduino circuit board passes through USB or the WIFI interface is connected with intelligent Mobile Terminal. The utility model discloses a thermistor temperature sensor spare, cost are very cheap, adopt intelligent Mobile Terminal to show ambient temperature, have the fashion.
Description
Technical field
The utility model belongs to intelligent testing technology field, particularly relates to a kind of low cost temperature monitoring system based on intelligent mobile terminal.
Background technology
Temperature sensor is widely used in Smart Home or industrial machinery, and object is the change of its ambient temperature of Real-Time Monitoring, occurs superheating phenomenon to prevent equipment.And traditional temperature detection device cost is higher, and display module is generally analog or digital thermometer, lacks novelty.
Utility model content
For background technology Problems existing, the utility model provides a kind of low cost temperature monitoring system based on intelligent mobile terminal.
The utility model adopts following technical scheme to realize:
Based on a low cost temperature monitoring system for intelligent mobile terminal, comprise power supply, resistance, thermistor, earth terminal, Arduino circuit board, intelligent mobile terminal; Power supply, resistance, thermistor, earth terminal are connected in series, power supply connects the power interface of Arduino circuit board, earth terminal connects the GND interface of Arduino circuit board, bleeder circuit tap terminals A0 is provided with between resistance and thermistor, analog input end 0, the Arduino circuit board that bleeder circuit tap terminals A0 connects Arduino circuit board is connected with intelligent mobile terminal by USB or WIFI interface.
Described thermistor comprises negative temperature coefficient NTC thermistor or positive temperature coefficient (PTC) PTC thermistor.
Described power supply is 5V power supply; Described resistance is 10k Ω resistance.
Described intelligent mobile terminal comprises smart mobile phone or panel computer.
The model of described Arduino circuit board is ArduinoMega2560.
Compared with prior art, the utility model has the following advantages and beneficial effect:
1. adopt thermistor temperature sensor part, cost is very cheap;
2. adopt smart mobile phone display environment temperature, there is fashion.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model; Wherein, Fig. 1-(A) is the schematic diagram adopting negative temperature coefficient (NTC) thermistor, and Fig. 1-(B) is the schematic diagram adopting positive temperature coefficient (PTC) (PTC) thermistor.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.
The technical problems to be solved in the utility model:
1. the low cost device of measures ambient temperature is a thermistor, and it utilizes the temperature variant principle of the resistance value of semiconductor material, realizes the detection to temperature by the change of measuring voltage bleeder circuit both end voltage.
2. along with smart mobile phone is popularized gradually, temperature value can be transferred to intelligent mobile phone terminal by USB or WIFI, and be shown.
Technical scheme:
Based on a low cost temperature monitoring system for intelligent mobile terminal, comprise power supply, resistance, thermistor, earth terminal, Arduino circuit board, intelligent mobile terminal; Power supply, resistance, thermistor, earth terminal are connected in series, power supply connects the power interface of Arduino circuit board, earth terminal connects the GND interface of Arduino circuit board, bleeder circuit tap terminals A0 is provided with between resistance and thermistor, analog input end 0, the Arduino circuit board that bleeder circuit tap terminals A0 connects Arduino circuit board is connected with intelligent mobile terminal by USB or WIFI interface.Described thermistor comprises negative temperature coefficient NTC thermistor or positive temperature coefficient (PTC) PTC thermistor.Power supply described in the present embodiment is 5V power supply; Described resistance is 10k Ω resistance.Described intelligent mobile terminal is smart mobile phone.The model of described Arduino circuit board is ArduinoMega2560.
According to the thermistor type selected, adopt accompanying drawing 1-(A) or the voltage branch circuit shown in (B) to connect Arduino circuit board, concrete connected mode refers to accompanying drawing 1 and illustrates.
Arduino circuit board completes following process (formula wherein adopted or software, method all belong to prior art):
1. Arduino circuit board reads the analog quantity voltage value of pin 0 by analogRead () built-in function, and is converted into current actual voltage value
2. the resistance value of thermistor under current voltage is calculated according to series voltage bleeder circuit
wherein V
inrepresent supply voltage value.
3. according to Steinhart-Hart expression formula accounting temperature value
wherein
r
0for T
0resistive reference value when=25 DEG C, B parameter is the characteristic coefficient of thermistor.
4. calculating gained temperature value is sent to mobile phone terminal by the USB on Arduino circuit board or WIFI interface.
Smart mobile phone completes following process (software wherein adopted, method all belong to prior art):
1. USB interface or netinit: after mobile phone terminal APP starts, by initialization apparatus communication interface, and connect Arduino circuit board by USB or WIFI interface;
2. network data is read: mobile phone terminal APP receives the network data of being sent by Arduino circuit board (hardware slave computer);
3. with graphic interface display current temperature value: be presented at receiving correct network data (i.e. the temperature value of slave computer detection) on mobile phone screen with patterned way.
Claims (5)
1. based on a low cost temperature monitoring system for intelligent mobile terminal, it is characterized in that: comprise power supply, resistance, thermistor, earth terminal, Arduino circuit board, intelligent mobile terminal; Power supply, resistance, thermistor, earth terminal are connected in series, power supply connects the power interface of Arduino circuit board, earth terminal connects the GND interface of Arduino circuit board, bleeder circuit tap terminals A0 is provided with between resistance and thermistor, analog input end 0, the Arduino circuit board that bleeder circuit tap terminals A0 connects Arduino circuit board is connected with intelligent mobile terminal by USB or WIFI interface.
2. a kind of low cost temperature monitoring system based on intelligent mobile terminal according to claim 1, is characterized in that: described thermistor comprises negative temperature coefficient NTC thermistor or positive temperature coefficient (PTC) PTC thermistor.
3. a kind of low cost temperature monitoring system based on intelligent mobile terminal according to claim 2, is characterized in that: described power supply is 5V power supply; Described resistance is 10k Ω resistance.
4. a kind of low cost temperature monitoring system based on intelligent mobile terminal according to claim 3, is characterized in that: described intelligent mobile terminal comprises smart mobile phone or panel computer.
5. a kind of low cost temperature monitoring system based on intelligent mobile terminal according to claim 4, is characterized in that: the model of described Arduino circuit board is ArduinoMega2560.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520895258.2U CN205157076U (en) | 2015-11-11 | 2015-11-11 | Low -cost temperature monitoring system based on intelligent Mobile Terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520895258.2U CN205157076U (en) | 2015-11-11 | 2015-11-11 | Low -cost temperature monitoring system based on intelligent Mobile Terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205157076U true CN205157076U (en) | 2016-04-13 |
Family
ID=55692755
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520895258.2U Expired - Fee Related CN205157076U (en) | 2015-11-11 | 2015-11-11 | Low -cost temperature monitoring system based on intelligent Mobile Terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205157076U (en) |
-
2015
- 2015-11-11 CN CN201520895258.2U patent/CN205157076U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160413 Termination date: 20161111 |