CN102819233B - Temperature protection module capable of measuring temperature and communicating - Google Patents
Temperature protection module capable of measuring temperature and communicating Download PDFInfo
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- CN102819233B CN102819233B CN201210272047.4A CN201210272047A CN102819233B CN 102819233 B CN102819233 B CN 102819233B CN 201210272047 A CN201210272047 A CN 201210272047A CN 102819233 B CN102819233 B CN 102819233B
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Abstract
The invention discloses a temperature protecting module capable of measuring temperature and communicating. The temperature protecting module comprises a sensor unit, a central processing unit (CPU), an executing unit, a communicating unit and a power unit, wherein the sensor unit is used for measuring and collecting the temperature value of a monitoring site and simultaneously implementing the temperature protection to the monitoring site; the actual temperature value of the monitoring site is sent by the sensor unit to the CPU to be stored and compared; and an external master controller is communicated with the CPU through the communicating unit. According to the invention, the collection and the transmission of the temperature of the monitoring site are realized, and data communication is also realized between the temperature protecting module and the external master controller.
Description
Technical field
The present invention relates to a kind of temperature protection module, specifically one can carry out temperature survey to monitoring point, and the temperature value of measurement is transmitted the temperature protection module communicated with master controller.
Background technology
At present; compressor on market and transformer temperature protection module use PTC(positive temperature coefficient (PTC) temperature sensor) sensor; this sensor has three probes; 3 monitoring temperatures can be carried out simultaneously; when there being a monitoring point to sense that temperature exceeds preferred temperature; the resistance of sensor can increase rapidly, and temperature protection module according to the folding of this change pilot relay, and then controls the break-make of the A.C. contactor be positioned on compressor three-phase power line or reports to the police.
PTC sensor has following characteristics: when detected temperatures reaches the critical value of sensor, resistance value can become high resistant (being greater than 1330 ohm) from reduced levels (about 100 ohms) rapidly, and below critical temperature, resistance value slightly changes along with the change of temperature.
But this temperature protection module cannot carry out the detection of actual temp, cannot know the real-time temperature values of coil, and function is comparatively single, cannot communicate with master controller.
Chinese patent literature CN201087842Y is the immediate prior art of the present invention.
Summary of the invention
Goal of the invention: the object of the invention is to solve the deficiencies in the prior art, provides one to read, stores monitoring point temperature information, can with master controller communication, simultaneously can the temperature protection module of available protecting monitoring point.
Technical scheme: in order to realize above object, of the present invention a kind of can thermometric communication temperature protection module, comprising: sensor unit, CPU element, performance element, communication unit and power supply unit; Sensor unit is measured and is gathered the temperature value of monitoring point, temperature protection is carried out to monitoring point simultaneously, the temperature value of the monitoring point of collection is delivered to CPU element by sensor unit, the monitoring point real-time temperature values of the collection that sensor unit is sent here by CPU element carries out storing, contrasting, and external piloting control device is communicated with CPU element by communication unit; When the real-time temperature values of the monitoring point of sensor unit collection is less than the temperature threshold value of setting, temperature is normal; When the temperature value of the monitoring point of sensor unit collection is equal to or greater than the temperature threshold value of setting, performance element gives the alarm, and sensor unit resistance value will maintain high resistance state, available protecting monitoring point.
Described in the present invention, sensor unit comprises: two PTC(positive temperature coefficient (PTC) temperature sensors) and a NTC(negative temperature coefficient temperature sensor); Described performance element is the relay that inside is provided with NO contact and NC contact; RT curve is before PTC critical value, and temperature is normal, and according to the RT curvilinear motion of NTC, carry out measurement and the reading of monitoring point temperature value, relay work, electric current can be passed through in NO contact simultaneously; When monitoring point temperature approaches critical value, RT curve will acutely rise, represent that temperature exceedes expectation value, when monitoring point temperature arrives critical value, sensor unit provides the relay cut-off signal in performance element, simultaneously the real-time temperature values of CPU element comparison monitoring point, when determining that monitoring point temperature value is more than or equal to critical value, also provide the relay cut-off signal in performance element, when the relay cut-off signal in two performance elements is all effective, the relay in performance element disconnects; When temperature continues to raise, the resistance value of sensor will maintain high resistance state always.
In the present invention, sensor unit adopts the mode that PTC and NTC combines, and both can read the real-time temperature values of monitoring point, again can available protecting monitoring point.
In the present invention, CPU element adopts Atmega8A single-chip microcomputer, and primary responsibility alarm indication, Communication Control, data send and receive.
In the present invention, power supply unit provides electric energy for modules.
In the present invention, performance element comprises a 5V relay, and there are NO contact and NC contact in inside, and draw two lead-in wires respectively, when normal temperature, relay work, electric current can be passed through in NO contact.When temperature reaches critical value, relay disconnects, and electric current can be passed through in NC contact, externally reports to the police.Described relay two controls cross-over connection bypass diode between pin, releases, avoid the vibration in relay coil with the energy after convenience relay disconnects.The enforcement division of this module divides the reception control signal of sensor unit and the control signal of CPU element, topworks's action when two control signals are useful signal simultaneously.
Described in the present invention, communication unit is controlled by CPU element, mainly carries out the reception of the transmission of data (temperature value, state etc.), control information (comprising optimum configurations and control command).Communication unit is connected with master controller is realized communicating by TWI bus, CPU element by communication unit respond master controller inquiry and control.
Beneficial effect: provided by the inventionly a kind ofly can the temperature protection module of thermometric communication to have the following advantages:
(1) can either utilize the critical temperature catastrophe characteristics of PTC, can carry out again the temperature survey work of a monitoring point, even if temperature measuring section breaks down, module still can utilize the physical characteristics of PTC to protect to protected object.
(2) data exchanging function is added: in the present invention, the real-time temperature values of the monitoring point of sensor unit collection can carry out data output by TWI bus; and the Parameter Control Variable of external piloting control device output can be received; master controller also can call the data display in CPU element by communication unit, a master controller can mount 128 temperature protection module of the present invention simultaneously.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the structural representation of multiple temperature protection module work of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, illustrate the present invention further, these embodiments should be understood only be not used in for illustration of the present invention and limit the scope of the invention, after having read the present invention, the amendment of those skilled in the art to the various equivalent form of value of the present invention has all fallen within the application's claims limited range.
Embodiment
As shown in Figure 1 and Figure 2 a kind of can thermometric communication temperature protection module, comprising: sensor unit, CPU element, performance element, communication unit and power supply unit; Described sensor unit comprises: two PTC and NTC; Described CPU element adopts Atmega8A single-chip microcomputer; Described performance element is a 5V relay, and there are NO contact and NC contact in inside; Described communication unit realizes the communication between temperature protection module and external piloting control device by TWI bus; Described power supply unit adopts 220VAC-12VAC transformer to carry out step-down process, adopts 78D05 to carry out voltage stabilizing, exports 5VDC power supply.
The principle of work of the present embodiment is as follows:
Can in the temperature protection module of thermometric communication sensor unit before RT curve is in PTC critical value, temperature is normal, according to the RT curvilinear motion of NTC, carry out measurement and the reading of monitoring point temperature value simultaneously, relay work in performance element, electric current can be passed through in the NO contact of relay, the real-time temperature values of the monitoring point of reading is delivered to CPU element by sensor unit, the real-time temperature values of CPU element to monitoring point stores, and outside master controller calls the data in CPU element by communication unit; When monitoring point temperature approaches critical value, RT curve will acutely rise, represent that temperature exceedes expectation value, when monitoring point temperature arrives critical value, sensor unit provides the relay cut-off signal in performance element, simultaneously the real-time temperature values of CPU element comparison monitoring point, when determining that monitoring point temperature value is more than or equal to critical value, also provide the relay cut-off signal in performance element, when the relay cut-off signal in two performance elements is all effective, the relay in performance element disconnects; When temperature continues to raise, the resistance value of sensor will maintain high resistance state always, effectively protect monitoring point.
Claims (3)
1. can thermometric communication a temperature protection module, it is characterized in that: this temperature protection module comprises: sensor unit, CPU element, performance element, communication unit and power supply unit; Sensor unit is measured and is gathered the temperature value of monitoring point, temperature protection is carried out to monitoring point simultaneously, the temperature value of the monitoring point of collection is delivered to CPU element by sensor unit, the monitoring point real-time temperature values of the collection that sensor unit is sent here by CPU element carries out storing, contrasting, and external piloting control device is communicated with CPU element by communication unit; When the real-time temperature values of the monitoring point of sensor unit collection is less than the temperature threshold value of setting, temperature is normal; When the temperature value of the monitoring point of sensor unit collection is equal to or greater than the temperature threshold value of setting, performance element gives the alarm, and sensor unit resistance value will maintain high resistance state, available protecting monitoring point; Described sensor unit comprises: two PTC and NTC; Described performance element is the relay that inside is provided with NO contact and NC contact; RT curve is before PTC critical value, and temperature is normal, and according to the RT curvilinear motion of NTC, carry out measurement and the reading of monitoring point temperature value, relay work, NO passes through electric current in contact simultaneously; When monitoring point temperature approaches critical value, RT curve will acutely rise, represent that temperature exceedes expectation value, when monitoring point temperature arrives critical value, sensor unit provides the relay cut-off signal in performance element, simultaneously the real-time temperature values of CPU element comparison monitoring point, when determining that monitoring point temperature value is more than or equal to critical value, also provide the relay cut-off signal in performance element, when the relay cut-off signal in two performance elements is all effective, the relay in performance element disconnects; When temperature continues to raise, the resistance value of sensor will maintain high resistance state always.
2. a kind of according to claim 1 can the temperature protection module of thermometric communication, it is characterized in that: described CPU element adopts Atmega8A single-chip microcomputer.
3. according to claim 1 a kind of can thermometric communication temperature protection module, it is characterized in that: described relay two controls cross-over connection bypass diode between pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210272047.4A CN102819233B (en) | 2012-08-02 | 2012-08-02 | Temperature protection module capable of measuring temperature and communicating |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210272047.4A CN102819233B (en) | 2012-08-02 | 2012-08-02 | Temperature protection module capable of measuring temperature and communicating |
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| Publication Number | Publication Date |
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| CN102819233A CN102819233A (en) | 2012-12-12 |
| CN102819233B true CN102819233B (en) | 2015-03-11 |
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| CN201210272047.4A Active CN102819233B (en) | 2012-08-02 | 2012-08-02 | Temperature protection module capable of measuring temperature and communicating |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1426148A (en) * | 2002-09-19 | 2003-06-25 | 刘开绪 | Carrier type motor alarm protector |
| CN2640090Y (en) * | 2003-07-21 | 2004-09-08 | 周青麟 | Temp. protector for power supply apparatus |
| CN201087842Y (en) * | 2007-01-30 | 2008-07-16 | 王悦 | Multimeter with temperature protection function |
| CN102290797A (en) * | 2011-08-18 | 2011-12-21 | 佛山市奥力图科技有限公司 | Intelligent distribution safety control system |
| CN202815476U (en) * | 2012-08-02 | 2013-03-20 | 苏州新亚科技有限公司 | Temperature protection module capable of temperature measurement and communication |
-
2012
- 2012-08-02 CN CN201210272047.4A patent/CN102819233B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1426148A (en) * | 2002-09-19 | 2003-06-25 | 刘开绪 | Carrier type motor alarm protector |
| CN2640090Y (en) * | 2003-07-21 | 2004-09-08 | 周青麟 | Temp. protector for power supply apparatus |
| CN201087842Y (en) * | 2007-01-30 | 2008-07-16 | 王悦 | Multimeter with temperature protection function |
| CN102290797A (en) * | 2011-08-18 | 2011-12-21 | 佛山市奥力图科技有限公司 | Intelligent distribution safety control system |
| CN202815476U (en) * | 2012-08-02 | 2013-03-20 | 苏州新亚科技有限公司 | Temperature protection module capable of temperature measurement and communication |
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| Publication number | Publication date |
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| CN102819233A (en) | 2012-12-12 |
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Denomination of invention: Temperature protection module capable of measuring temperature and communicating Effective date of registration: 20170208 Granted publication date: 20150311 Pledgee: Bank of Communications Ltd Taicang branch Pledgor: Suzhou New Asia Technologies Inc. Registration number: 2017320010006 |
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