CN207114039U - A kind of temperature collection circuit - Google Patents
A kind of temperature collection circuit Download PDFInfo
- Publication number
- CN207114039U CN207114039U CN201720895653.XU CN201720895653U CN207114039U CN 207114039 U CN207114039 U CN 207114039U CN 201720895653 U CN201720895653 U CN 201720895653U CN 207114039 U CN207114039 U CN 207114039U
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- CN
- China
- Prior art keywords
- dc5v
- pins
- adt75
- lpc1788
- microcontrollers
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Abstract
The utility model discloses a kind of temperature collection circuit, including 12V DC power supply, DC12V turns DC5V voltage conversion circuits, DC5V turns DC3.3V voltage conversion circuits, LPC1788 microcontrollers, ADT75 digital temperature sensors, first pull-up resistor, second pull-up resistor, 3rd pull-up resistor and filter capacitor, the ALERT/OS pins of ADT75 digital temperature sensors are connected with the 143rd pin of LPC1788 microcontrollers, the SCL pins of ADT75 digital temperature sensors are connected with the I2C_SCL pins of LPC1788 microcontrollers, the SDA pins of ADT75 digital temperature sensors are connected with the I2C_SCL pins of LPC1788 microcontrollers.The utility model can be widely applied to temperature acquisition field as a kind of temperature collection circuit.
Description
Technical field
Temperature acquisition field is the utility model is related to, especially a kind of temperature collection circuit.
Background technology
With the development of embedded system, for the demand also more and more higher of the precision of ambient temperature data collection.Tradition
More using the LM75 TEMP chips of National Semiconductor's production, there is temperature acquisition precision not in it with temperature acquisition sensor
The shortcomings that high, it is difficult to meet requirement of the people to high-temperature acquisition precision；In addition, processor is to adopting in existing temperature collection circuit
The processing speed of the temperature data collected is low, it is difficult to adapts to pursue the development of efficient modernization industry.
Utility model content
In order to solve the above-mentioned technical problem, the purpose of this utility model is to provide a kind of temperature acquisition precision height and to temperature
The fast temperature collection circuit of data processing speed.
Technical scheme is used by the utility model：A kind of temperature collection circuit, including 12V DC power supply, DC12V turn
DC5V voltage conversion circuits, DC5V turn DC3.3V voltage conversion circuits, LPC1788 microcontrollers, ADT75 digital temperatures sensing
Device, the first pull-up resistor, the second pull-up resistor, the 3rd pull-up resistor and filter capacitor, the output end of the 12V DC power supply with
DC12V turns the input connection of DC5V voltage conversion circuits, and the DC12V turns the output end and DC5V of DC5V voltage conversion circuits
Turn the input connection of DC3.3V voltage conversion circuits, the DC5V turn the output ends of DC3.3V voltage conversion circuits with
The input connection of LPC1788 microcontrollers, the output end that the DC5V turns DC3.3V voltage conversion circuits pass through the first pull-up
Resistance is connected with the ALERT/OS pins of ADT75 digital temperature sensors, and the DC5V turns the defeated of DC3.3V voltage conversion circuits
Go out end to be connected with the SCL pins of ADT75 digital temperature sensors by the second pull-up resistor, the DC5V turns DC3.3V voltages and turned
The output end for changing circuit is connected by the 3rd pull-up resistor with the SDA pins of ADT75 digital temperature sensors, and the DC5V turns
The output end of DC3.3V voltage conversion circuits and the VDD pins of ADT75 digital temperature sensors, A0 pins, A1 pins, filtered electrical
One end connection of appearance, the other end ground connection of the filter capacitor, A2 pins, the GND pin of the ADT75 digital temperature sensors
Ground connection, the ALERT/OS pins of the ADT75 digital temperature sensors are connected with the 143rd pin of LPC1788 microcontrollers, institute
State the SCL pins of ADT75 digital temperature sensors to be connected with the I2C_SCL pins of LPC1788 microcontrollers, the ADT75 numbers
The SDA pins of word temperature sensor are connected with the I2C_SCL pins of LPC1788 microcontrollers.
Further, it is LM22676 switching regulators and its peripheral circuit that the DC12V, which turns DC5V voltage conversion circuits,.
Further, it is AMS1117-3.3 voltage-stablizers and its peripheral circuit that the DC5V, which turns DC3.3V voltage conversion circuits,.
Further, the temperature collection circuit also includes temperature display, the output end of the LPC1788 microcontrollers
It is connected with the input of temperature display.
Further, the temperature display is liquid crystal touch screen.
Further, the temperature collection circuit also includes Bluetooth circuit, the Bluetooth circuit and LPC1788 microcontrollers
Connection.
Further, the temperature collection circuit also includes WIFI circuits, the WIFI circuits and LPC1788 microcontrollers
Connection.
Further, the temperature collection circuit also includes warning circuit, the output end of the LPC1788 microcontrollers with
The input connection of warning circuit.
Further, the warning circuit includes buzzer.
The beneficial effects of the utility model are：A kind of temperature collection circuit of the utility model, is passed by ADT75 digital temperatures
Sensor carries out ambient temperature data collection, can apply in the scheme higher to required precision；It is in addition, micro- using LPC1788
Controller is handled temperature data, improves the processing speed of temperature data, meets people to efficient pursuit.
Brief description of the drawings
Specific embodiment of the present utility model is described further below in conjunction with the accompanying drawings：
Fig. 1 is a kind of structured flowchart of temperature collection circuit of the utility model；
Fig. 2 be a kind of temperature collection circuit of the utility model ADT75 digital temperature sensors and its peripheral circuit one
Specific embodiment circuit diagram；
Fig. 3 a and Fig. 3 b are the LPC1788 microcontrollers and its peripheral circuit of a kind of temperature collection circuit of the utility model
One specific embodiment circuit diagram；
Fig. 4 is the specific implementation that a kind of DC12V of temperature collection circuit of the utility model turns DC5V voltage conversion circuits
Example circuit diagram；
Fig. 5 is the specific implementation that a kind of DC5V of temperature collection circuit of the utility model turns DC3.3V voltage conversion circuits
Example circuit diagram.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutually combination.
A kind of temperature collection circuit, it is a kind of temperature acquisition electricity of the utility model with reference to figure 1, Fig. 2, Fig. 3 a and Fig. 3 b, Fig. 1
The structured flowchart on road, Fig. 2 are the ADT75 digital temperature sensors and its peripheral circuit of a kind of temperature collection circuit of the utility model
A specific embodiment circuit diagram, Fig. 3 a and Fig. 3 b are a kind of LPC1788 microcontrollers of temperature collection circuit of the utility model
And its a specific embodiment circuit diagram of peripheral circuit, including 12V DC power supply, DC12V turn DC5V voltage conversion circuits, DC5V
Turn DC3.3V voltage conversion circuits, LPC1788 microcontrollers, ADT75 digital temperature sensors, the first pull-up resistor R1, second
Pull-up resistor R2, the 3rd pull-up resistor R3 and filter capacitor C1, output end and the DC12V of 12V DC power supply turn DC5V voltages and turned
The input connection of circuit is changed, DC12V turns the output end of DC5V voltage conversion circuits and DC5V turns DC3.3V voltage conversion circuits
Input connection, the output end that DC5V turns DC3.3V voltage conversion circuits is connected with the input of LPC1788 microcontrollers,
The output end that DC5V turns DC3.3V voltage conversion circuits is connected with the input of ADT75 digital temperature sensors, ADT75 numeral temperature
Degree sensor is connected with LPC1788 microcontrollers, and specifically, DC5V turns the output end (VCC3.3) of DC3.3V voltage conversion circuits
It is connected by the first pull-up resistor R1 with the ALERT/OS pins of ADT75 digital temperature sensors, DC5V turns DC3.3V voltages and turned
The output end for changing circuit is connected by the second pull-up resistor R2 with the SCL pins of ADT75 digital temperature sensors, and DC5V turns
The output end of DC3.3V voltage conversion circuits is connected by the SDA pins of the 3rd pull-up resistor R3 and ADT75 digital temperature sensors
Connect, DC5V turns the output end (VCC3.3) of DC3.3V voltage conversion circuits and VDD pins, the A0 of ADT75 digital temperature sensors
One end connection of pin, A1 pins, filter capacitor C1, filter capacitor C1 other end ground connection, ADT75 digital temperature sensors
A2 pins, GND pin ground connection, the ALERT/OS pins of ADT75 digital temperature sensors and the 143rd of LPC1788 microcontrollers the
Pin is connected, and the SCL pins of ADT75 digital temperature sensors are connected with the I2C_SCL pins of LPC1788 microcontrollers, ADT75
The SDA pins of digital temperature sensor are connected with the I2C_SCL pins of LPC1788 microcontrollers, are realized that I2C communicates, are improved temperature
The communication speed spent between sensor and microcontroller.
A kind of temperature collection circuit of the utility model, ambient temperature data is carried out by ADT75 digital temperature sensors and adopted
Collection, the temperature acquisition precision of ADT75 digital temperature sensors is ± 2 DEG C, be can apply in the scheme higher to required precision；
In addition, being handled using LPC1788 microcontrollers temperature data, the processing speed of temperature data is improved, meets people
To efficient pursuit；Moreover, ADT75 digital temperature sensors integrate sensor and analog-digital converter, can greatly simplify
The design of temperature measurement system；Plus the high integration performance of LPC1788 microcontrollers, the integrated of system can be improved well
Change.
It is a kind of temperature collection circuit of the utility model with reference to figure 4 and Fig. 5, Fig. 4 as the further improvement of technical scheme
DC12V turn a specific embodiment circuit diagram of DC5V voltage conversion circuits, Fig. 5 is a kind of temperature collection circuit of the utility model
DC5V turn a specific embodiment circuit of DC3.3V voltage conversion circuits, it is LM22676 that DC12V, which turns DC5V voltage conversion circuits,
Switching regulator and its peripheral circuit；LM22676 switching regulators can be used minimum external module and realize efficiently height to provide
The repertoire needed for voltage-releasing voltage stabilizer is pressed, is turned as shown in figure 4,12V DC power supply (V_DC_IN) turns DC3.3V voltages with DC5V
The input connection of circuit is changed, DC12V is converted into by LM22676 switching regulators by stable DC5V voltage outputs.Enter one
Step ground, it is AMS1117-3.3 voltage-stablizers and its peripheral circuit that DC5V, which turns DC3.3V voltage conversion circuits, passes through AMS1117-3.3
Voltage-stablizer exports DC5V voltage conversions into DC3.3V.
As the further improvement of technical scheme, with reference to figure 1, temperature collection circuit also includes temperature display, LPC1788
The output end of microcontroller and the input of temperature display connect.Further, temperature display is liquid crystal touch screen；It is actual
In use, liquid crystal touch screen shows the Temperature numerical that ADT75 digital temperature sensors detect；It can also be controlled by its input
The work of order control LPC1788 microcontrollers.
As the further improvement of technical scheme, with reference to figure 1, temperature collection circuit also includes warning circuit, and LPC1788 is micro-
The output end of controller and the input of warning circuit connect.Further, warning circuit includes buzzer；Pass through buzzer work
Alarmed as sounding.For example, when the Temperature numerical detected exceedes preset temperature value, LPC1788 microprocessor control reports
Alert circuit work, buzzer obtain electric work, send sound, remind staff's temperature to exceed preset value.
As the further improvement of technical scheme, with reference to figure 1, temperature collection circuit also includes Bluetooth circuit, Bluetooth circuit
It is connected with LPC1788 microcontrollers；The temperature data detected can be sent to other equipment, realized using Bluetooth circuit
Data sharing.
As the further improvement of technical scheme, with reference to figure 1, temperature collection circuit also includes WIFI circuits, WIFI circuits
It is connected with LPC1788 microcontrollers；In addition to realizing data transfer using Bluetooth circuit, WIFI circuit realirations can also be passed through
Data transfer, there is provided a variety of data transfer modes, meet the needs of different pieces of information transmission environment.
Above is preferably implement to be illustrated to of the present utility model, but the invention is not limited to the reality
Example is applied, those skilled in the art can also make a variety of equivalent variations on the premise of without prejudice to the utility model spirit
Or replace, these equivalent deformations or replacement are all contained in the application claim limited range.
Claims (9)
- A kind of 1. temperature collection circuit, it is characterised in that including 12V DC power supply, DC12V turn DC5V voltage conversion circuits, DC5V turns DC3.3V voltage conversion circuits, LPC1788 microcontrollers, ADT75 digital temperature sensors, the first pull-up resistor, Two pull-up resistors, the 3rd pull-up resistor and filter capacitor, output end and the DC12V of the 12V DC power supply turn DC5V voltages and turned The input connection of circuit is changed, the DC12V turns the output end of DC5V voltage conversion circuits and DC5V turns DC3.3V voltage conversions The input connection of circuit, the DC5V turn the output end of DC3.3V voltage conversion circuits and the input of LPC1788 microcontrollers End connection, the output end that the DC5V turns DC3.3V voltage conversion circuits are passed by the first pull-up resistor and ADT75 digital temperatures The ALERT/OS pins connection of sensor, the DC5V turn the output ends of DC3.3V voltage conversion circuits by the second pull-up resistor with The SCL pins connection of ADT75 digital temperature sensors, the DC5V turn the output end of DC3.3V voltage conversion circuits by the 3rd Pull-up resistor is connected with the SDA pins of ADT75 digital temperature sensors, and the DC5V turns the output of DC3.3V voltage conversion circuits One end with the VDD pins of ADT75 digital temperature sensors, A0 pins, A1 pins, filter capacitor is held to be connected, the filtered electrical The other end ground connection of appearance, the A2 pins of the ADT75 digital temperature sensors, GND pin ground connection, the ADT75 digital temperatures The ALERT/OS pins of sensor are connected with the 143rd pin of LPC1788 microcontrollers, the ADT75 digital temperature sensors SCL pins be connected with the I2C_SCL pins of LPC1788 microcontrollers, the SDA pins of the ADT75 digital temperature sensors It is connected with the I2C_SCL pins of LPC1788 microcontrollers.
- 2. temperature collection circuit according to claim 1, it is characterised in that the DC12V turns DC5V voltage conversion circuits For LM22676 switching regulators and its peripheral circuit.
- 3. temperature collection circuit according to claim 1 or 2, it is characterised in that the DC5V turns DC3.3V voltage conversions Circuit is AMS1117-3.3 voltage-stablizers and its peripheral circuit.
- 4. temperature collection circuit according to claim 1 or 2, it is characterised in that the temperature collection circuit also includes temperature Display screen is spent, the output end of the LPC1788 microcontrollers and the input of temperature display connect.
- 5. temperature collection circuit according to claim 4, it is characterised in that the temperature display is liquid crystal touch screen.
- 6. temperature collection circuit according to claim 1 or 2, it is characterised in that the temperature collection circuit also includes indigo plant Tooth circuit, the Bluetooth circuit are connected with LPC1788 microcontrollers.
- 7. temperature collection circuit according to claim 1 or 2, it is characterised in that the temperature collection circuit also includes WIFI circuits, the WIFI circuits are connected with LPC1788 microcontrollers.
- 8. temperature collection circuit according to claim 1 or 2, it is characterised in that the temperature collection circuit also includes report Alert circuit, the output end of the LPC1788 microcontrollers and the input of warning circuit connect.
- 9. temperature collection circuit according to claim 8, it is characterised in that the warning circuit includes buzzer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720895653.XU CN207114039U (en) | 2017-07-21 | 2017-07-21 | A kind of temperature collection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720895653.XU CN207114039U (en) | 2017-07-21 | 2017-07-21 | A kind of temperature collection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207114039U true CN207114039U (en) | 2018-03-16 |
Family
ID=61573535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720895653.XU Expired - Fee Related CN207114039U (en) | 2017-07-21 | 2017-07-21 | A kind of temperature collection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207114039U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110196430A (en) * | 2019-05-15 | 2019-09-03 | 深圳市速腾聚创科技有限公司 | A kind of temperature-compensation circuit and method applied to single photon sensor array |
| RU2790093C1 (en) * | 2022-11-14 | 2023-02-14 | федеральное государственное бюджетное образовательное учреждение высшего образования "Ставропольский государственный аграрный университет" | Digital temperature sensor based on microcontroller rc-adc |
-
2017
- 2017-07-21 CN CN201720895653.XU patent/CN207114039U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110196430A (en) * | 2019-05-15 | 2019-09-03 | 深圳市速腾聚创科技有限公司 | A kind of temperature-compensation circuit and method applied to single photon sensor array |
| RU2790093C1 (en) * | 2022-11-14 | 2023-02-14 | федеральное государственное бюджетное образовательное учреждение высшего образования "Ставропольский государственный аграрный университет" | Digital temperature sensor based on microcontroller rc-adc |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180316 Termination date: 20200721 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |