CN205620043U - Temperature detection system - Google Patents
Temperature detection system Download PDFInfo
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- CN205620043U CN205620043U CN201620191130.2U CN201620191130U CN205620043U CN 205620043 U CN205620043 U CN 205620043U CN 201620191130 U CN201620191130 U CN 201620191130U CN 205620043 U CN205620043 U CN 205620043U
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- temperature
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- 238000001514 detection method Methods 0.000 title claims abstract description 17
- 238000012545 processing Methods 0.000 claims abstract description 6
- 230000005611 electricity Effects 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000009529 body temperature measurement Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003071 parasitic effect Effects 0.000 description 2
- 230000003750 conditioning effect Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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Abstract
The embodiment of the utility model discloses a temperature detection system, relates to the temperature and detects technical field, can obtain data signal's temperature information to simple structure, cost are lower. Temperature detection system includes: master control circuit, with master control circuit is power supply circuit, measuring circuit and the serial circuits of electricity connection respectively, wherein, master control circuit includes that the model is CC2530F256's central processing unit, the measuring circuit includes that the model is DS18B20's digital temperature sensor, digit temperature sensor is connected to CC2530F256's general IO port through single bus connection mode, serial circuits is RS232 serial circuits. The utility model is suitable for a temperature detects.
Description
Technical Field
The utility model relates to a temperature detect technical field, especially relate to a temperature detecting system.
Background
At present, the generally adopted temperature measurement and control device still mainly outputs analog signals, and the temperature measurement and control device can be connected with interfaces of microprocessors such as a single chip microcomputer and the like after digital signals are obtained through A/D conversion, so that the circuit structure of the whole temperature measurement and control device is complex, and the cost is high.
Disclosure of Invention
In view of this, the embodiment of the present invention provides a temperature detecting system, which can obtain the temperature information of the digital signal, and has a simple structure and a low cost.
In order to achieve the above object, the embodiment of the temperature detecting system of the utility model adopts the following technical scheme:
a temperature sensing system, comprising:
the master control circuit is electrically connected with the power circuit, the measuring circuit and the serial port circuit respectively; wherein,
the master control circuit comprises a central processing unit with the model number of CC2530F 256;
the measuring circuit comprises a digital temperature sensor with the model number DS18B 20; the digital temperature sensor is connected to a general I/O port of the CC2530F256 in a single bus connection mode;
the serial port circuit is an RS232 serial port circuit.
Optionally, the RS232 serial port circuit is connected to a Personal Computer (PC).
Optionally, the number of the digital temperature sensors is more than two; each digital temperature sensor has a unique identifier;
And more than two digital temperature sensors are connected in parallel and then are connected to a general I/O port of the CC2530F256 through an I/O line.
Optionally, the temperature detection system further includes a JTAG interface circuit electrically connected to the main control circuit.
The embodiment of the utility model provides a temperature detection system, because master control circuit adopts the model to be CC2530F 256's central processing unit, measuring circuit adopts the model to be DS18B 20's digital temperature sensor, and digital temperature sensor is connected to CC2530F 256's general IO port through single bus connected mode, can obtain digital signal's temperature information to make entire system's simple structure, cost lower.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a temperature detection system according to an embodiment of the present invention.
Detailed Description
The following describes a temperature detection system according to an embodiment of the present invention in detail with reference to the accompanying drawings.
It should be understood that the described embodiments are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
Fig. 1 is a schematic structural diagram of an embodiment of the temperature detecting system of the present invention. Referring to fig. 1, the present invention provides a temperature detection system, including:
the device comprises a main control circuit 11, a power circuit 12, a measuring circuit 13 and a serial port circuit 14, wherein the power circuit 12, the measuring circuit 13 and the serial port circuit 14 are respectively and electrically connected with the main control circuit 11; wherein,
the main control circuit 11 comprises a central processing unit with the model number of CC2530F 256;
the measuring circuit 13 comprises a digital temperature sensor of type DS18B 20; the digital temperature sensor is connected to a general I/O port of the CC2530F256 in a single bus connection mode;
the serial port circuit 14 is an RS232 serial port circuit.
In this embodiment, CC2530F256 is an SoC CMOS chip, which has a high integration level and can operate normally only with a small number of peripheral elements such as an antenna and a crystal oscillator. The CC2530F256 is embedded with a high-performance and low-power-consumption enhanced 8051 microcontroller core, integrates an ADC module of 14-bit analog-to-digital conversion and a 2.4GHz RF wireless transceiver conforming to the IEEE 802.15.4 standard, and has excellent wireless receiving sensitivity and strong anti-interference capability. In addition, CC2530F256 has three power management modes of running, idle, and sleep, and ideal energy saving effect can be obtained by reasonably utilizing these power management modes. Moreover, the very short time required for the CC2530F256 to transition from the sleep mode to the run mode also makes the CC2530F256 particularly suitable for use in temperature detection systems that require long battery life and run time.
In this embodiment, DS18B20 has only 3 wires: 1 +3.3V power line, 1 digital I/O bus and 1 GND ground line. The DS18B20 working power supply can be introduced at a far end or a parasitic power supply mode can be adopted. If the parasitic power mode is adopted, the DS18B20 will obtain the operating power from the digital I/O bus, and only connect the I/O bus and the GND ground. DS18B20 requires only one digital I/O bus to connect to a common P1.7 port of CC2530F 256.
The embodiment of the utility model provides a temperature detection system, because master control circuit adopts the model to be CC2530F 256's central processing unit, measuring circuit adopts the model to be DS18B 20's digital temperature sensor, and digital temperature sensor is connected to CC2530F 256's general IO port through single bus connected mode, can obtain digital signal's temperature information for entire system's simple structure, cost are lower. In addition, DS18B20 directly converts the physical quantity of temperature into digital signal and serially outputs the measured temperature in 16-bit digital mode of sign extension to be directly transmitted to CPU in CC2530F256, thus the transmission data is reliable, the anti-interference capability of the temperature detection system is greatly improved, and simultaneously, the error possibly introduced in the transmission, conditioning and conversion process when the data is transmitted in analog mode is avoided.
In the embodiment of the temperature detection system, optionally, the RS232 serial port circuit is connected to a PC, so that the temperature information is conveniently transmitted to the PC through a serial port for display.
In order to realize the transparent data communication between the system and the PC, the invention designs the RS232 serial port circuit which works at +3.3V and is a more common serial communication mode, and the full-duplex communication between two digital devices can be realized by only two wires (TXD and RXD). Only one serial converter is needed between UART and RS232 interfaces of CC2530F256, MAX232 of Maxim company is adopted for serial conversion, and a PC can directly receive and display temperature information acquired by the system in real time by using a serial tool.
In the foregoing embodiment of the temperature detection system, optionally, the number of the digital temperature sensors is more than two; each digital temperature sensor has a unique identifier; and more than two digital temperature sensors are connected in parallel and then are connected to a general I/O port of the CC2530F256 through an I/O line.
In this embodiment, the DS18B20 has a unique product serial number, and two or more digital temperature sensors are connected in parallel and then connected to a general I/O port of the CC2530F256 through an I/O line, so as to conveniently construct a multipoint temperature detection system.
In the foregoing embodiment of the temperature detecting system, optionally, the temperature detecting system further includes a JTAG interface circuit 15 electrically connected to the main control circuit.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (4)
1. A temperature sensing system, comprising:
the master control circuit is electrically connected with the power circuit, the measuring circuit and the serial port circuit respectively; wherein,
the master control circuit comprises a central processing unit with the model number of CC2530F 256;
the measuring circuit comprises a digital temperature sensor with the model number DS18B 20; the digital temperature sensor is connected to a general I/O port of the CC2530F256 in a single bus connection mode;
the serial port circuit is an RS232 serial port circuit.
2. The temperature detection system of claim 1, wherein the RS232 serial port circuit is connected to a personal computer.
3. The temperature detection system according to claim 1 or 2, wherein the number of the digital temperature sensors is two or more; each digital temperature sensor has a unique identifier;
and more than two digital temperature sensors are connected in parallel and then are connected to a general I/O port of the CC2530F256 through an I/O line.
4. The temperature sensing system of claim 1, further comprising JTAG interface circuitry electrically connected to the master circuitry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620191130.2U CN205620043U (en) | 2016-03-11 | 2016-03-11 | Temperature detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620191130.2U CN205620043U (en) | 2016-03-11 | 2016-03-11 | Temperature detection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205620043U true CN205620043U (en) | 2016-10-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620191130.2U Expired - Fee Related CN205620043U (en) | 2016-03-11 | 2016-03-11 | Temperature detection system |
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| Country | Link |
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| CN (1) | CN205620043U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109781186A (en) * | 2019-02-28 | 2019-05-21 | 电子科技大学中山学院 | Low-power-consumption temperature and humidity detection system and detection method thereof |
| WO2024113636A1 (en) * | 2022-11-30 | 2024-06-06 | 广州市浩洋电子股份有限公司 | Lamp having multi-target temperature measurement circuit |
-
2016
- 2016-03-11 CN CN201620191130.2U patent/CN205620043U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109781186A (en) * | 2019-02-28 | 2019-05-21 | 电子科技大学中山学院 | Low-power-consumption temperature and humidity detection system and detection method thereof |
| WO2024113636A1 (en) * | 2022-11-30 | 2024-06-06 | 广州市浩洋电子股份有限公司 | Lamp having multi-target temperature measurement circuit |
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Legal Events
| Date | Code | Title | Description |
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| 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: 20161005 Termination date: 20190311 |