CN102819233A - 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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- CN102819233A CN102819233A CN2012102720474A CN201210272047A CN102819233A CN 102819233 A CN102819233 A CN 102819233A CN 2012102720474 A CN2012102720474 A CN 2012102720474A CN 201210272047 A CN201210272047 A CN 201210272047A CN 102819233 A CN102819233 A CN 102819233A
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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 is a kind ofly can carry out temperature survey to the monitoring point, and the temperature protection module that the temperature value measured transmission is communicated by letter with master controller.
Background technology
At present; Compressor on the market and transformer temperature protection module utilization PTC (positive temperature coefficient (PTC) temperature sensor) sensor, this sensor has three probes, can carry out 3 monitoring temperatures simultaneously; When a monitoring point is sensed temperature and is exceeded preferred temperature; The resistance of sensor can increase rapidly, and the temperature protection module changes the folding of pilot relay according to this, and then control is positioned at the break-make of the A.C. contactor on the compressor three-phase power line or reports to the police.
The PTC sensor has following characteristics: when detected temperatures reaches the critical value of sensor; Resistance value can become high resistant (greater than 1330 ohm) by reduced levels (about about 100 ohm) rapidly; And below critical temperature, resistance value is along with variation of temperature changes slightly.
But this temperature protection module can't be carried out the detection of actual temp, can't know the real time temperature value of coil, and function is comparatively single, can't communicate with master controller.
Summary of the invention
Goal of the invention: the objective of the invention is in order to solve the deficiency of prior art, provide a kind of and can read, store the monitoring point temperature information, can with the master controller communication, can effectively protect simultaneously the temperature protection module of monitoring point.
Technical scheme: in order to realize above purpose, a kind of temperature protection module that can thermometric communication of the present invention comprises: sensor unit, CPU element, performance element, communication unit and power supply unit; The temperature value of monitoring point is measured and gathered to sensor unit; Simultaneously temperature protection is carried out in the monitoring point; Sensor unit is delivered to CPU element with the temperature value of the monitoring point of gathering; CPU element is stored the monitoring point real time temperature value of the collection that sensor unit is sent here, contrast, and external piloting control system device is communicated by letter with CPU element through communication unit; When the real time temperature value of the monitoring point that sensor unit is gathered less than the temperature threshold value of setting, temperature is normal; When the temperature value of the monitoring point of sensor unit collection was equal to or greater than the temperature threshold value of setting, performance element gave the alarm, and the sensor unit resistance value will maintain high resistance state, effectively protect the monitoring point.
Sensor unit comprises described in the present invention: two PTC (positive temperature coefficient (PTC) temperature sensor) and a NTC (negative temperature coefficient temperature sensor); Said performance element is the inner relay that is provided with NO contact and NC contact; The RT curve is before the PTC critical value, and temperature is normal, and according to the RT curvilinear motion of NTC, carry out the measurement of monitoring point temperature value simultaneously and read, relay work, electric current can be passed through in the NO contact; When the temperature approaches critical value of monitoring point, the RT curve will acutely rise, and the expression temperature surpasses expectation value; When the monitoring point temperature arrived critical value, sensor unit provided the relay cut-off signal in the performance element, the real time temperature value of the monitoring point of CPU element comparison simultaneously; When confirming the monitoring point temperature value more than or equal to critical value; Also provide the relay cut-off signal in the performance element, all effectively the time, the relay in the performance element breaks off the relay cut-off signal in two performance elements; When temperature continuation rising, the resistance value of sensor will maintain high resistance state always.
Sensor unit adopts the mode that PTC combines with NTC among the present invention, both can read the real time temperature value of monitoring point, can effectively protect the monitoring point again.
CPU element adopts the Atmega8A single-chip microcomputer among the present invention, mainly is responsible for alarm indication, Communication Control, data transmission and reception.
Power supply unit provides electric energy for each module among the present invention.
Performance element comprises a 5V relay among the present invention, and there are NO contact and NC contact in inside, draws two lead-in wires respectively, when normal temperature, and relay work, electric current can be passed through in the NO contact.When temperature reached critical value, relay broke off, and electric current can be passed through in the NC contact, externally reported to the police.Cross-over connection bypass diode between the said relay two control pins is released with the energy after the convenience relay disconnection, avoids the vibration in the relay coil.The control signal of the operating part receiving sensor unit of this module and the control signal of CPU element, topworks's action when two control signals are useful signal simultaneously.
Communication unit is controlled by CPU element described in the present invention, mainly carries out the transmission of data (temperature value, state etc.), the reception of control information (comprising parameter setting and control command).Communication unit through the TWI bus is connected with master controller realize communication, CPU element pass through communication unit respond master controller inquiry and control.
Beneficial effect: a kind of temperature protection module that can thermometric communication provided by the invention has the following advantages:
(1) can either utilize the critical temperature catastrophe characteristics of PTC, can carry out the temperature survey work of a monitoring point again, even temperature survey is partly broken down, module still can utilize the physical characteristics of PTC to protect to protected object.
(2) increased data exchanging function: the real time temperature value of the monitoring point of sensor unit collection can be carried out data output through the TWI bus among the present invention; And can receive the parameter control variable that external piloting control system device is exported; Master controller also can call the data presentation in the CPU element through communication unit, and a master controller can articulate 128 temperature protection modules of the present invention simultaneously.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the structural representation of a plurality of temperature protection module according to the invention work.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment; Further illustrate the present invention; Should understand these embodiment only be used to the present invention is described and be not used in the restriction scope of the present invention; After having read the present invention, those skilled in the art all fall within the application's accompanying claims institute restricted portion to the modification of the various equivalent form of values of the present invention.
Embodiment
Like Fig. 1, a kind of temperature protection module that can thermometric communication shown in Figure 2, comprising: sensor unit, CPU element, performance element, communication unit and power supply unit; Said sensor unit comprises: two PTC and a NTC; Said CPU element adopts the Atmega8A single-chip microcomputer; Said performance element is a 5V relay, and there are NO contact and NC contact in inside; Said communication unit is realized communicating by letter between temperature protection module and the external piloting control system device through the TWI bus; Said power supply unit adopts the 220VAC-12VAC transformer to carry out step-down and handles, and adopts 78D05 to carry out voltage stabilizing, output 5VDC power supply.
The principle of work of present embodiment is following:
Sensor unit is before the RT curve is in the PTC critical value in can the temperature protection module of thermometric communication; Temperature is normal; According to the RT curvilinear motion of NTC, carry out the measurement of monitoring point temperature value simultaneously and read the relay work in the performance element; Electric current can be passed through in the NO contact of relay; Sensor unit is delivered to CPU element with the real time temperature value of the monitoring point of reading, and CPU element is stored the real time temperature value of monitoring point, and outside master controller calls the data in the CPU element through communication unit; When the temperature approaches critical value of monitoring point, the RT curve will acutely rise, and the expression temperature surpasses expectation value; When the monitoring point temperature arrived critical value, sensor unit provided the relay cut-off signal in the performance element, the real time temperature value of the monitoring point of CPU element comparison simultaneously; When confirming the monitoring point temperature value more than or equal to critical value; Also provide the relay cut-off signal in the performance element, all effectively the time, the relay in the performance element breaks off the relay cut-off signal in two performance elements; When temperature continuation rising, the resistance value of sensor will maintain high resistance state always, effectively protect the monitoring point.
Claims (4)
- One kind can thermometric the temperature protection module of communication, it is characterized in that: this temperature protection module comprises: sensor unit, CPU element, performance element, communication unit and power supply unit; The temperature value of monitoring point is measured and gathered to sensor unit; Simultaneously temperature protection is carried out in the monitoring point; Sensor unit is delivered to CPU element with the temperature value of the monitoring point of gathering; CPU element is stored the monitoring point real time temperature value of the collection that sensor unit is sent here, contrast, and external piloting control system device is communicated by letter with CPU element through communication unit; When the real time temperature value of the monitoring point that sensor unit is gathered less than the temperature threshold value of setting, temperature is normal; When the temperature value of the monitoring point of sensor unit collection was equal to or greater than the temperature threshold value of setting, performance element gave the alarm, and the sensor unit resistance value will maintain high resistance state, effectively protect the monitoring point.
- 2. according to claim 1 a kind of can thermometric the temperature protection module of communication, it is characterized in that: said sensor unit comprises: two PTC and a NTC; Said performance element is the inner relay that is provided with NO contact and NC contact; The RT curve is before the PTC critical value, and temperature is normal, and according to the RT curvilinear motion of NTC, carry out the measurement of monitoring point temperature value simultaneously and read, relay work, NO passes through electric current in the contact; When the temperature approaches critical value of monitoring point, the RT curve will acutely rise, and the expression temperature surpasses expectation value; When the monitoring point temperature arrived critical value, sensor unit provided the relay cut-off signal in the performance element, the real time temperature value of the monitoring point of CPU element comparison simultaneously; When confirming the monitoring point temperature value more than or equal to critical value; Also provide the relay cut-off signal in the performance element, all effectively the time, the relay in the performance element breaks off the relay cut-off signal in two performance elements; When temperature continuation rising, the resistance value of sensor will maintain high resistance state always.
- According to claim 1 said a kind of can thermometric the temperature protection module of communication, it is characterized in that: said CPU element adopts the Atmega8A single-chip microcomputer.
- 4. according to claim 2 a kind of can thermometric the temperature protection module of communication, it is characterized in that: cross-over connection bypass diode between the said relay two control pins.
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 true CN102819233A (en) | 2012-12-12 |
| CN102819233B 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 |
|---|---|
| CN102819233B (en) | 2015-03-11 |
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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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