CN203659200U - RFID (radio frequency identification)-based wireless temperature monitoring system - Google Patents
RFID (radio frequency identification)-based wireless temperature monitoring system Download PDFInfo
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- CN203659200U CN203659200U CN201420053006.0U CN201420053006U CN203659200U CN 203659200 U CN203659200 U CN 203659200U CN 201420053006 U CN201420053006 U CN 201420053006U CN 203659200 U CN203659200 U CN 203659200U
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Abstract
The utility model provides an RFID (radio frequency identification)-based wireless temperature monitoring system. The RFID-based wireless temperature monitoring system comprises a measurement chip and a handheld reader-writer, wherein the measurement chip comprises a single chip control circuit, a temperature recorder, a temperature sensor, a power supply conversion circuit and a wireless module; and the handheld reader-writer comprises a wireless module, a key adjustment circuit, a single chip control circuit, a liquid crystal display circuit, an audible and visual alarm system and a system power supply. The RFID-based wireless temperature monitoring system provided by the utility model is reliable in stability and measurement accuracy because of adopting a mode of combining the temperature sensor with a wireless transmission mode, and easy to install in electric equipment with a limited space; moreover, the RFID-based wireless temperature monitoring system is low in price, simple in structure, safe and reliable; the RFID-based wireless temperature monitoring system has a reliable isolation measure; and the RFID-based wireless temperature monitoring system is capable of effectively suppressing electromagnetic interference and realizing remotely-controlled measurement, and fast and convenient to install.
Description
Technical field
The utility model belongs to electric power detection field, particularly a kind of wireless temperature monitoring system based on RFID.
Background technology
Known, China's electric system is in special developing stage.Although China is own, through having built modernization regional power grid and the provincial power network of multiple ten million watt of level, network is also weaker, and safety and stability level is also lower, and past 20 years, stable accident occurred more than 300 time.
The basic task of electric system is to supply electric energy " safety, reliable, high-quality ".But part power equipment is in operational process, and owing to being subject to the effect of the various factorss such as electricity, heat, machinery, environment, its performance can be deteriorated gradually, finally causes safety failure.The positions such as the part of the disconnector of cable splice, the middle junction of cable, hi-line, the dynamic/static contact of high-tension switch cabinet and other junctions, transformer are overheated is main hidden danger.According to the statistics of Safe Production Supervision department of State Grid, all will there is a lot of electric power accidents every year in the whole nation, cause large-area power-cuts, shutdown, and the root of these accidents is mainly with due to apparatus overheat.Therefore the periodic monitor to electrical equipment temperature, significant to ensureing the safe operation of electrical equipment and the reliable power supply of electric system.
From metering system, the temperature survey of electrical equipment has contact and contactless two kinds of contact type measurement modes, the temperature sensor of non-contact temperature measuring device needn't be placed in to be needed in test point, through A/D conversion, temperature information is become to numerical quantities by other sensors, obtains corresponding temperature value.Use at present in many temp measuring methods, variable color light-emitting material temperature measurement accuracy not high can not quantitative measurment, need manual inspection to be difficult to realize robotization; Infrared measurement of temperature easily affected by environment, mode of operation has relatively high expectations and cannot walk around optics and block while measuring; Optical fiber temperature-measurement precision is high, not affected by environment, but difficult wiring, insulating property are poor and expensive.
Utility model content
The utility model solves the problems of the technologies described above adopted technical scheme: a kind of wireless temperature monitoring system based on RFID, comprises and measure chip and handhold read-write device;
Described measurement chip comprises single chip machine controlling circuit, thermometrograph, temperature sensor, power-switching circuit and wireless module; Described thermometrograph, temperature sensor and wireless module are connected with single chip machine controlling circuit respectively, described wireless module is connected with power-switching circuit, and described power-switching circuit is connected with single chip machine controlling circuit, thermometrograph, temperature sensor respectively;
Described handhold read-write device comprises wireless module, button Circuit tuning, single chip machine controlling circuit, liquid crystal display circuit, acoustooptic alarm system and system power supply; Described wireless module, button Circuit tuning, liquid crystal display circuit, acoustooptic alarm system, system power supply are connected with single chip machine controlling circuit respectively, and described system power supply is connected with liquid crystal display circuit;
Described temperature sensor comprises DS18B20 cake core.
Described wireless module comprises NRF24L01 cake core.
The beneficial effects of the utility model are:
Based on a wireless temperature monitoring system of RFID, the mode that adopts temperature sensor to combine with wireless transmission method, clings to temperature sensor the positions such as high-tension apparatus, bus or cable junctions, contact of breaker, measures thereby realize passive temperature; Handhold read-write device sends radiofrequency signal by radio-frequency antenna, gives and measures chip supply electric energy, realizes data communication with measurement chip simultaneously.Measure chip without external power supply, by receiving the radiofrequency signal of handhold read-write device transmitting, be its internal circuit power supply after power converting circuit, and power dissipation ratio is lower; And there is reliable stability and measuring accuracy, can meet the needs of practical application and effectively expand; The utility model volume is little, is easy to be arranged in the electrical equipment of limited space; And cheap, simple in structure, safe and reliable; There are reliable quarantine measures; Electromagnetic interference (EMI) can be effectively suppressed, remote metering and convenience quick for installation can be realized.
Brief description of the drawings
Fig. 1 is the schematic diagram of structure of the present utility model;
Fig. 2 is the principle schematic that the utility model is measured chip;
Fig. 3 is the principle schematic of the utility model handhold read-write device;
Embodiment
Below in conjunction with further describing the technical program with reference to accompanying drawing, the example of described embodiment is shown in the drawings, wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish, but this description is only for explaining the utility model, and can not be interpreted as restriction of the present utility model.
As Fig. 1, a kind of wireless temperature monitoring system based on RFID, comprises and measures chip and handhold read-write device;
As Fig. 2, described measurement chip comprises single chip machine controlling circuit, thermometrograph, temperature sensor, power-switching circuit and wireless module; Described thermometrograph, temperature sensor and wireless module are connected with single chip machine controlling circuit respectively, described wireless module is connected with power-switching circuit, and described power-switching circuit is connected with single chip machine controlling circuit, thermometrograph, temperature sensor respectively;
As Fig. 3, described handhold read-write device comprises wireless module, button Circuit tuning, single chip machine controlling circuit, liquid crystal display circuit, acoustooptic alarm system and system power supply; Described wireless module, button Circuit tuning, liquid crystal display circuit, acoustooptic alarm system, system power supply are connected with single chip machine controlling circuit respectively, and described system power supply is connected with liquid crystal display circuit;
Described temperature sensor comprises DS18B20 cake core.
Described wireless module comprises NRF24L01 cake core.
When use, measurement chip is arranged on to inside electric appliance to be measured or surface, making to measure chip directly contacts with inside electric appliance to be measured or surface, handhold read-write device is powered by system power supply, through single chip machine controlling circuit, give wireless module, button Circuit tuning and acoustooptic alarm system power supply, liquid crystal display circuit is directly powered by system power supply, wireless module sends radiofrequency signal, realize data communication with measurement chip simultaneously, measure chip without external power supply, measure chip and send radiofrequency signal by the radio frequency induction coil reception handhold read-write device wireless module in wireless module, it after power converting circuit, is single chip machine controlling circuit, thermometrograph, temperature sensor power supply, measurement chip is started working.
Temperature sensor DS18B20 gathers the real-time temperature value of electrical equipment to be measured; Measured temperature information is sent to single chip machine controlling circuit and thermometrograph, be transferred to handhold read-write device by wireless module with RF-wise, wherein can to keep gathering the temperature value in moment constant until carry out the temperature value collection in next moment after this communication for thermometrograph.The radiofrequency signal of sending that handhold read-write device receives by wireless module simultaneously, temperature data is sent to single chip machine controlling circuit, and temperature information is presented to LCD1602 liquid crystal display; Button Circuit tuning changes the setting value of ceiling temperature and lower limit temperature; When temperature higher than set ceiling temperature or lower than set lower limit temperature time acoustooptic alarm system realize report to the police.
These are only preferred embodiment of the present utility model; be not intended to limit protection domain of the present utility model; therefore, all any amendments of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model within spirit of the present utility model and principle.
Claims (3)
1. the wireless temperature monitoring system based on RFID, is characterized in that: comprise and measure chip and handhold read-write device;
Described measurement chip comprises single chip machine controlling circuit, thermometrograph, temperature sensor, power-switching circuit and wireless module; Described thermometrograph, temperature sensor and wireless module are connected with single chip machine controlling circuit respectively, described wireless module is connected with power-switching circuit, and described power-switching circuit is connected with single chip machine controlling circuit, thermometrograph, temperature sensor respectively;
Described handhold read-write device comprises wireless module, button Circuit tuning, single chip machine controlling circuit, liquid crystal display circuit, acoustooptic alarm system and system power supply; Described wireless module, button Circuit tuning, liquid crystal display circuit, acoustooptic alarm system, system power supply are connected with single chip machine controlling circuit respectively, and described system power supply is connected with liquid crystal display circuit.
2. a kind of wireless temperature monitoring system based on RFID according to claim 1, is characterized in that: described temperature sensor comprises DS18B20 cake core.
3. a kind of wireless temperature monitoring system based on RFID according to claim 1, is characterized in that: described wireless module comprises NRF24L01 cake core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420053006.0U CN203659200U (en) | 2014-01-27 | 2014-01-27 | RFID (radio frequency identification)-based wireless temperature monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420053006.0U CN203659200U (en) | 2014-01-27 | 2014-01-27 | RFID (radio frequency identification)-based wireless temperature monitoring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203659200U true CN203659200U (en) | 2014-06-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420053006.0U Expired - Fee Related CN203659200U (en) | 2014-01-27 | 2014-01-27 | RFID (radio frequency identification)-based wireless temperature monitoring system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105004445A (en) * | 2015-07-30 | 2015-10-28 | 国网山东省电力公司 | Mobile distribution transformer temperature monitoring device based on infrared communication and method |
| CN105424222A (en) * | 2015-11-01 | 2016-03-23 | 西安电子科技大学 | RFID technology based multi-target temperature state monitoring system and method |
| CN106289546A (en) * | 2016-09-21 | 2017-01-04 | 成都启立辰智科技有限公司 | Passive temperature sensor for electrical control cubicles temperature monitoring |
| CN112268628A (en) * | 2020-10-16 | 2021-01-26 | 沈阳英特电气科技有限公司 | Temperature rise fault monitoring system |
-
2014
- 2014-01-27 CN CN201420053006.0U patent/CN203659200U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105004445A (en) * | 2015-07-30 | 2015-10-28 | 国网山东省电力公司 | Mobile distribution transformer temperature monitoring device based on infrared communication and method |
| CN105424222A (en) * | 2015-11-01 | 2016-03-23 | 西安电子科技大学 | RFID technology based multi-target temperature state monitoring system and method |
| CN106289546A (en) * | 2016-09-21 | 2017-01-04 | 成都启立辰智科技有限公司 | Passive temperature sensor for electrical control cubicles temperature monitoring |
| CN112268628A (en) * | 2020-10-16 | 2021-01-26 | 沈阳英特电气科技有限公司 | Temperature rise fault monitoring system |
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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 |
Granted publication date: 20140618 Termination date: 20150127 |
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| EXPY | Termination of patent right or utility model |