CN102735365A - Ambient temperature detection device and fault judgment method thereof - Google Patents

Ambient temperature detection device and fault judgment method thereof Download PDF

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Publication number
CN102735365A
CN102735365A CN2012102097500A CN201210209750A CN102735365A CN 102735365 A CN102735365 A CN 102735365A CN 2012102097500 A CN2012102097500 A CN 2012102097500A CN 201210209750 A CN201210209750 A CN 201210209750A CN 102735365 A CN102735365 A CN 102735365A
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China
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temperature
preset
collecting
sensor
judged
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CN2012102097500A
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Chinese (zh)
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CN102735365B (en
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房振
卞在银
杨乐
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美的集团有限公司
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Abstract

The invention discloses an ambient temperature detection device. The ambient temperature detection device comprises a temperature parameter acquisition module, a microprocessor module, a control output module and a power supply module, wherein the temperature parameter acquisition module is used for acquiring the current ambient temperature through one or more sensors to generate one or more acquired temperatures; the microprocessor module is connected with the temperature parameter acquisition module, and is used for analyzing the one or more acquired temperatures to judge whether the one or more sensors of the temperature parameter acquisition module has an abnormal condition, or judge whether the current ambient temperature is in a low-temperature state, and generate corresponding control commands; the control output module is connected with the microprocessor module, and is used for generating driving signals according to the control commands of the microprocessor module; and the power supply module is used for supplying power to the temperature parameter acquisition module, the control output module and the microprocessor module. The ambient temperature detection device can effectively distinguish the low-temperature state and a fault state, so that error judgment is prevented. The invention also discloses a fault judgment method for the ambient temperature detection device.

Description

Ambient temperature detection device and fault judgment method thereof
Technical field
The present invention relates to the temperature detection technical field, particularly a kind of ambient temperature detection device and fault judgment method thereof are applicable to the electric equipment products that electric cooker, electric pressure cooking saucepan and refrigerator etc. are commonly used.
Background technology
Present ambient temperature detection device, though can detect temperature, owing to receive the restriction of sensor self attributes, being difficult to clearly distinguish is the extremely low temperature situation or the fault of sensor itself, therefore, in use is easy to cause erroneous judgement disconnected.
Specifically; Whether reasonable in order to judge the temperature value that temperature-detecting device returns; Main control module compares a temperature value that returns and a judgment standard: the numerical value that returns for the temperature collect module that adopts PTC circuit; If it is unusual that this numerical value, thinks then that temperature detecting module exists less than this judgment standard, need to report to the police and stop heating etc.; Otherwise, think that this temperature-detecting device is normal; For the numerical value that the temperature collect module that adopts negative temperature parameter circuit returns, unusual if this numerical value, thinks then that temperature detecting module exists greater than this judgment standard, need to report to the police and stop heating etc.; Otherwise, think that this temperature-detecting device is normal.If but the electric equipment products that temperature-detecting device is installed are deposited in low temperature environment for a long time; Temperature-detecting device meeting output stage low temperature value; And the extremely low temperature value is relatively near the fault alarm numerical value of temperature-detecting device, i.e. judgment standard, therefore in use; Can cause low temperature environment to be identified as the problem of sensor fault by error, thereby influence client's normal use.
Summary of the invention
The object of the invention is intended to solve at least one of above-mentioned technological deficiency.
For this reason, first purpose of the present invention is to propose a kind of ambient temperature detection device, and this device can be distinguished low-temperature condition and malfunction effectively, prevents that erroneous judgement is disconnected.Second purpose of the present invention is to propose a kind of fault judgment method of ambient temperature detection device.The 3rd purpose of the present invention also is to propose the fault judgment method of another kind of ambient temperature detection device.
For achieving the above object; First aspect present invention embodiment has proposed a kind of ambient temperature detection device; Comprise: the temperature parameter acquisition module; Said temperature parameter acquisition module comprises one or more sensor, is used for through said one or more sensor acquisition current environmental temperature to generate one or more collecting temperature; Microprocessor module; Said microprocessor module links to each other with said temperature parameter acquisition module; Be used for said one or more collecting temperature is analyzed; Whether occur unusually with the said one or more sensor of judging said temperature parameter acquisition module, or judge whether said current environmental temperature is in low-temperature condition, and generate the control corresponding instruction; The control output module, said control output module links to each other with said microprocessor module, is used for producing drive signal according to the steering order of said microprocessor module; And power module; Said power module links to each other with said temperature parameter acquisition module, said microprocessor module and said control output module respectively, is used to said temperature parameter acquisition module, said control output module and the power supply of said microprocessor module.
Ambient temperature detection device according to the embodiment of the invention; Through microprocessor module to the temperature parameter Signal Processing; Judge low-temperature condition, and in time send steering order, distinguish low-temperature condition and malfunction effectively to other modules; Prevent that erroneous judgement is disconnected, improved the accuracy that environment temperature is judged.
In one embodiment of the invention; Said temperature parameter acquisition module comprises first sensor; Said microprocessor module judges in the following manner whether said first sensor occurs unusually: when said first collecting temperature is judged temperature less than preset reference; Start timer, if the duration that said first collecting temperature is judged temperature less than said preset reference greater than the first preset reference judgement time, judges that said first sensor is unusual; If said first collecting temperature is not more than the first preset reference judgement time less than the duration of said preset reference judgement temperature, be judged as the low temperature environment temperature.
In one embodiment of the invention, said temperature parameter acquisition module comprises the first sensor and second sensor, is used for through said first sensor and the second sensor acquisition current environmental temperature to generate first collecting temperature and second collecting temperature respectively; Said microprocessor module links to each other with said temperature parameter acquisition module; Be used for said first collecting temperature or second collecting temperature are analyzed; Whether the said first sensor and/or second sensor to judge said temperature parameter acquisition module occur unusually; Or judge whether said current environmental temperature is in low-temperature condition, and generate the control corresponding instruction.
In one embodiment of the invention; Said ambient temperature detection device also comprises the expression module; Said expression module links to each other with said power module with said microprocessor module respectively, is used for generating corresponding expression signal according to the result of said microprocessor module.
In one embodiment of the invention; Said microprocessor module judges in the following manner whether the said first sensor and/or second sensor occur unusually: judge temperature when said first collecting temperature is not less than preset reference; And when said second collecting temperature is judged temperature less than said preset reference; Start timer, if the duration that said second collecting temperature is judged temperature less than said preset reference greater than the first preset reference judgement time, is judged said second sensor abnormality; When being not less than preset reference, said second collecting temperature judges temperature; And when said first collecting temperature is judged temperature less than said preset reference; Start timer; If the duration that said first collecting temperature is judged temperature less than said preset reference judges that greater than the said first preset reference judgement time said first sensor is unusual; And when said first collecting temperature and second collecting temperature are all judged temperature less than said preset reference; Start timer; Start well heater simultaneously; If the duration that first collecting temperature and second collecting temperature are all judged temperature less than preset reference judges that greater than the second preset reference judgement time first sensor and second sensor are all unusual; If first collecting temperature and second collecting temperature all are not more than the second preset reference judgement time less than the duration of preset reference judgement temperature, then be judged as the low temperature environment temperature.
And; In one embodiment of the invention; Said first collecting temperature and second collecting temperature are all judged temperature less than preset reference duration greater than the second preset reference judgement time after, close well heater, restart timer; If the duration that first collecting temperature and second collecting temperature are all judged temperature less than preset reference is judged the first sensor and second sensor abnormality greater than preset lengthening judgement time; If first collecting temperature and second collecting temperature all are not more than preset lengthening judgement time less than the duration of preset reference judgement temperature, then be judged as the low temperature environment temperature.
In one embodiment of the invention, the said second preset judgement time is greater than the first preset reference judgement time.
Further, said microprocessor module also is used for when judging said first sensor and/or said second sensor abnormality, and reporting to the police also, control heater stops heating.
In an example of the present invention; Said preset reference judges that the scope of temperature is between-10 ℃ to-40 ℃; The scope of the said first preset reference judgement time t1 can be between the 1s to 10s; The scope of the said second preset reference judgement time t2 is between the 10s to 40s, and the scope of said preset lengthening judgement time t3 is between the 20s to 60s.
In one embodiment of the invention, said power module further comprises: high-tension electricity input submodule is used for linking to each other with the external high pressure electricity; And direct current generation submodule, be used for converting said external high pressure electricity into direct current.
Second aspect present invention embodiment has proposed a kind of fault judgment method of ambient temperature detection device, and said ambient temperature detection device is the ambient temperature detection device that first aspect present invention embodiment proposes, and said method comprising the steps of:
Said microprocessor module receives first collecting temperature and second collecting temperature that said temperature parameter acquisition module is gathered; When being not less than preset reference, said first collecting temperature judges temperature; And when said second collecting temperature is judged temperature less than said preset reference; Start timer; If the duration that said second collecting temperature is judged temperature less than said preset reference, said microprocessor module was judged said second sensor abnormality greater than the first preset reference judgement time; When being not less than preset reference, said second collecting temperature judges temperature; And when said first collecting temperature is judged temperature less than said preset reference; Start timer; If the duration that said second collecting temperature is judged temperature less than said preset reference is judged said second sensor abnormality greater than the first preset reference judgement time; Said microprocessor module judges that said first sensor is unusual; And when said first collecting temperature and second collecting temperature are all judged temperature less than said preset reference; Start timer; Start well heater simultaneously; If the duration that first collecting temperature and second collecting temperature are all judged temperature less than preset reference is greater than the second preset reference judgement time, said microprocessor module judges that first sensor and second sensor are all unusual; If first collecting temperature and second collecting temperature all are not more than the second preset reference judgement time less than the duration of preset reference judgement temperature, said microprocessor module is judged as the low temperature environment temperature.
According to the fault judgment method of the ambient temperature detection device of the embodiment of the invention, can distinguish low-temperature condition and sensor fault state timely and effectively, prevented that erroneous judgement is disconnected, improved judging nicety rate greatly, this outer control is simple, and is convenient and practical.
In one embodiment of the invention; The duration that first collecting temperature and second collecting temperature are all judged temperature less than preset reference greater than the second preset reference judgement time after; Close well heater; Restart timer, if the duration that first collecting temperature and second collecting temperature are all judged temperature less than preset reference greater than preset lengthening judgement time, said microprocessor module is judged the first sensor and second sensor abnormality; If first collecting temperature and second collecting temperature all are not more than preset lengthening judgement time less than the duration of preset reference judgement temperature, said microprocessor module is judged as the low temperature environment temperature.
In an example of the present invention; Said preset reference judges that the scope of temperature is between-10 ℃ to-40 ℃; The scope of the said first preset reference judgement time t1 can be between the 1s to 10s; The scope of the said second preset reference judgement time t2 is between the 10s to 40s, and the scope of said preset lengthening judgement time t3 is between the 20s to 60s.
Aspect that the present invention adds and advantage part in the following description provide, and part will become obviously from the following description, or recognize through practice of the present invention.
Description of drawings
Above-mentioned and/or additional aspect of the present invention and advantage are from obviously with easily understanding becoming the description of embodiment below in conjunction with accompanying drawing, wherein:
Fig. 1 is the block scheme according to the ambient temperature detection device of the embodiment of the invention;
Fig. 2 is the circuit diagram of temperature parameter acquisition module according to an embodiment of the invention;
Fig. 3 is the circuit diagram of temperature parameter acquisition module in accordance with another embodiment of the present invention;
Fig. 4 is the process flow diagram of the fault judgment method of ambient temperature detection device according to an embodiment of the invention;
Fig. 5 is the further process flow diagram according to the fault judgment method of the ambient temperature detection device of the embodiment of the invention;
Fig. 6 is the process flow diagram of the fault judgment method of ambient temperature detection device in accordance with another embodiment of the present invention.
Embodiment
Describe embodiments of the invention below in detail, the example of said embodiment is shown in the drawings, and wherein identical from start to finish or similar label is represented identical or similar elements or the element with identical or similar functions.Be exemplary through the embodiment that is described with reference to the drawings below, only be used to explain the present invention, and can not be interpreted as limitation of the present invention.
In description of the invention, need to prove, unless otherwise prescribed and limit; Term " installation ", " linking to each other ", " connection " should be done broad understanding, for example, can be mechanical connection or electrical connection; Also can be the connection of two element internals, can be directly to link to each other, and also can link to each other indirectly through intermediary; For those of ordinary skill in the art, can understand the concrete implication of above-mentioned term as the case may be.
With reference to following description and accompanying drawing, with these and other aspects of knowing embodiments of the invention.These describe with accompanying drawing in, some specific implementations in the embodiments of the invention are specifically disclosed, represent some modes of principle of the embodiment of embodiment of the present invention, still should be appreciated that the scope of embodiments of the invention is not limited.On the contrary, embodiments of the invention comprise and fall into appended spirit that adds the right claim and all changes, modification and the equivalent in the intension scope.
Referring to figs. 1 through Fig. 3 the ambient temperature detection device that proposes according to first aspect present invention embodiment is described below.
As shown in Figure 1, this ambient temperature detection device comprises temperature parameter acquisition module 101, microprocessor module 102, control output module 103 and power module 104.
Wherein, temperature parameter acquisition module 101 comprises the first sensor and second sensor, is used for through first sensor and the second sensor acquisition current environmental temperature to generate the first collecting temperature Tt and the second collecting temperature Tb respectively.
Microprocessor module 102 links to each other with temperature parameter acquisition module 101; Be used for the first collecting temperature Tt or the second collecting temperature Tb are analyzed; Whether the first sensor and/or second sensor to judge temperature parameter acquisition module 101 occur unusually; Or judge whether current environmental temperature is in low-temperature condition, and generate the control corresponding instruction.
Control output module 103 links to each other with microprocessor module 102, is used for producing drive signal according to the steering order of microprocessor module 102.
Power module 104 links to each other with temperature parameter acquisition module 101, microprocessor module 102 and control output module 103 respectively, is used to temperature parameter acquisition module 101, control output module 103 and microprocessor module 102 power supplies.
In addition, this ambient temperature detection device also comprises expression module 105.Express module 105 and link to each other with power module 104 with microprocessor module 102 respectively, be used for generating corresponding expression signal according to the result of microprocessor module 102.
That is to say that the temperature data electric signal that microprocessor module 102 collects according to temperature parameter acquisition module 101 through the calculating and the processing of internal algorithm, correspondingly sends to result control output module 103 and expresses module 105 then.Particularly, when judging that the first sensor and/or second sensor occur when unusual, microprocessor module 102 generates corresponding alarm command, and shows expressing module 105, makes control output module 103 control heaters stop heating simultaneously.When judging that current environmental temperature is in low-temperature condition, microprocessor module 102 generates corresponding heating instruction makes control output module 103 control heaters begin heating, and shows the result of low-temperature condition through expressing module.
In one embodiment of the invention, power module 104 comprises that further high-tension electricity input submodule 106 generates submodule 107 with direct current.Wherein, high-tension electricity input submodule 106 is used for linking to each other with the external high pressure electricity, and direct current generates submodule 107 and is used for converting the external high pressure electricity into direct current.
In one embodiment of the invention, as shown in Figure 2, when the temperature parameter acquisition module adopted PTC circuit, when environment temperature is high more, the resistance of Rx was big more, and the AD that the temperature parameter acquisition module collects (Analog Data, simulated data) value is big more.The temperature parameter acquisition module comprises serial connection loop, current-limiting resistance R0 and the filter capacitor C1 that is made up of thermistor Rx and divider resistance Rs; One of current-limiting resistance R0 terminates on the connecting line of serial connection loop thermistor Rx and divider resistance Rs; The other end of current-limiting resistance R0 is connected with microprocessor module 102 and through filter capacitor C1 ground connection; The end that the serial connection loop is provided with divider resistance Rs is connected with the output terminal of power module 1; Be provided with the end ground connection of thermistor Rx, in this embodiment, microprocessor module judges in the following manner whether the first sensor and/or second sensor occur unusually:
When the first collecting temperature Tt judges temperature T 0 greater than preset reference; And when the second collecting temperature Tb judges temperature T 0 less than preset reference; Start timer; If the duration that the second collecting temperature Tb judges temperature T 0 less than preset reference is then judged second sensor abnormality greater than the first preset reference judgement time t1;
When the second collecting temperature Tb judges temperature T 0 greater than preset reference; And when the first collecting temperature Tt judges temperature T 0 less than preset reference; Start timer; If the duration that the first collecting temperature Tt judges temperature T 0 less than preset reference judges then that greater than the first preset reference judgement time t1 first sensor is unusual;
When the first collecting temperature Tt and the second collecting temperature Tb all judge temperature T 0 less than preset reference; Start timer; Start well heater simultaneously; If the duration that the first collecting temperature Tt and the second collecting temperature Tb all judge temperature T 0 less than preset reference judges then that greater than the second preset reference judgement time t2 first sensor and second sensor are all unusual; If the duration that the first collecting temperature Tt and the second collecting temperature Tb all judge temperature T 0 less than preset reference then is judged as the low temperature environment temperature less than the second preset reference judgement time t2; In order to increase the accuracy of judging more; The first collecting temperature Tt and the second collecting temperature Tb all judge temperature T 0 less than preset reference duration greater than the second preset reference judgement time t2 after; Close well heater; Restart timer, if the duration that the first collecting temperature Tt and the second collecting temperature Tb all judge temperature T 0 less than preset reference greater than preset lengthening judgement time t3, is then judged the first sensor and second sensor abnormality; If the duration that the first collecting temperature Tt and the second collecting temperature Tb all judge temperature T 0 less than preset reference then is judged as the low temperature environment temperature less than preset lengthening judgement time t3.Wherein the second preset judgement time t2 is greater than the first preset reference judgement time t1.
Stop to increase preset lengthening judgement time t3 behind the well heater, the heat that can let well heater in the second preset reference judgement time t2, produce evenly distributes, and particularly is evenly distributed on the first sensor and second sensor.
When first sensor and/or second sensor occurred unusual and report to the police, the microprocessor module control heater stopped heating.
In another embodiment of the present invention, as shown in Figure 3, when the temperature parameter acquisition module adopts negative temperature parameter circuit; When environment temperature high more; The resistance of Rx is big more, and the AD that the temperature parameter acquisition module collects (Analog Data, simulated data) value is more little.The temperature parameter acquisition module comprises serial connection loop, current-limiting resistance R0 and the filter capacitor C1 that is made up of thermistor Rx and divider resistance Rs; One of current-limiting resistance R0 terminates on the connecting line of serial connection loop thermistor Rx and divider resistance Rs; The other end of current-limiting resistance R0 is connected with microprocessor IC module 4 and through filter capacitor C1 ground connection; The end that the serial connection loop is provided with thermistor Rx is connected with the output terminal of power module 104; Be provided with the end ground connection of divider resistance Rs, in this embodiment, microprocessor module judges in the following manner whether the first sensor and/or second sensor occur unusually:
When the first collecting temperature Tt judges temperature T 0 greater than preset reference; And when the second collecting temperature Tb judges temperature T 0 less than preset reference; Start timer; If the duration that the first collecting temperature Tt judges temperature T 0 greater than preset reference judges then that greater than the first preset reference judgement time t1 first sensor is unusual;
When the second collecting temperature Tb judges temperature T 0 greater than preset reference; And when the first collecting temperature Tt judges temperature T 0 less than preset reference; Start timer; If the duration that the second collecting temperature Tb judges temperature T 0 greater than preset reference is then judged second sensor abnormality greater than the first preset reference judgement time t1;
When the first collecting temperature Tt and the second collecting temperature Tb all judge temperature T 0 greater than preset reference; Start timer; Start well heater simultaneously; If the duration that the first collecting temperature Tt and the second collecting temperature Tb all judge temperature T 0 greater than preset reference judges then that greater than the second preset reference judgement time t2 first sensor and second sensor are all unusual; If the duration that the first collecting temperature Tt and the second collecting temperature Tb all judge temperature T 0 greater than preset reference then is judged as the low temperature environment temperature less than the second preset reference judgement time t2.
In order to increase the accuracy of judging more; The first collecting temperature Tt and the second collecting temperature Tb all judge temperature T 0 greater than preset reference duration greater than the second preset reference judgement time t2 after; Close well heater; Restart timer, if the duration that the first collecting temperature Tt and the second collecting temperature Tb all judge temperature T 0 greater than preset reference greater than preset lengthening judgement time t3, is then judged the first sensor and second sensor abnormality; If the duration that the first collecting temperature Tt and the second collecting temperature Tb all judge temperature T 0 greater than preset reference then is judged as the low temperature environment temperature less than preset lengthening judgement time t3.
When first sensor and/or second sensor occurred unusual and report to the police, the microprocessor module control heater stopped heating.
In an example of the present invention; Preset reference judges that the scope of temperature T 0 can be between-10 ℃ to-40 ℃; The scope of its AD value can be between 02H to 03H or the 0EFH to 0F0H; The scope of the first preset reference judgement time t1 can be between the 1s to 10s, and the scope of the second preset reference judgement time t2 is between the 10s to 40s, and the scope of preset lengthening judgement time t3 is between the 20s to 60s.
Ambient temperature detection device according to the embodiment of the invention; Through microprocessor module to the temperature parameter Signal Processing; Judge low-temperature condition, and in time send steering order, distinguish low-temperature condition and malfunction effectively to other modules; Prevent that erroneous judgement is disconnected, improved the accuracy that environment temperature is judged.
The fault judgment method of the ambient temperature detection device that second aspect present invention embodiment proposes is described with reference to Fig. 4 and Fig. 5 below.
As shown in Figure 4, when ambient temperature detection device that ambient temperature detection device proposes for first aspect present invention embodiment, the fault judgment method of this ambient temperature detection device may further comprise the steps:
Step S401, collecting temperature parameter Tt and Tb also handle.Particularly, microprocessor module receives the first collecting temperature Tt and the second collecting temperature Tb that the temperature parameter acquisition module is gathered, and the temperature parameter acquisition module adopts PTC circuit.
Step S402 judges that whether Tt is less than T0.Judge temperature T 0 if the first collecting temperature Tt is not less than preset reference, then get into next step S403; If the first collecting temperature Tt judges temperature T 0 less than preset reference, then get into step S404.
Step S403 judges that whether Tb is less than T0.Judge temperature T 0 if the second collecting temperature Tb is not less than preset reference, then get into next step S408; If the second collecting temperature Tb judges temperature T 0 less than preset reference, then get into step S405.
Step S404 continues to judge that whether Tb is less than T0.Judge temperature T 0 if the second collecting temperature Tb is not less than preset reference, then get into next step S406; If the second collecting temperature Tb judges temperature T 0 less than preset reference, then get into step S407.
Step S405 puts Bottom Error sign, i.e. second sensor abnormality.
Step S406 puts Top Error sign, and promptly first sensor is unusual.
Step S407 puts the Cold sign, and promptly current environmental temperature is in low-temperature condition.
Step S408, clear Bottom Error sign, Top Error sign and Cold sign, the promptly current normal mode of operation that is in.
Say that further as shown in Figure 5 in one embodiment of the invention, the fault judgment method of this ambient temperature detection device may further comprise the steps:
Whether step S501 allows well heater to heat.If then get into step S502; If, then do not get into step S515.
Whether step S502 Bottom Error or Top Error sign occurs.If then get into step S503; If, then do not get into step S507.
Step S503, timer picks up counting, and gets into step S504.
Step S504 judges that whether timing time is greater than the first preset reference judgement time t1.If then get into step S505; If, then do not get into step S506.
Step S505, Bottom Senser Error or Top Senser Error report to the police, and get into step S515.
Step S506 carries out operate as normal.
Step S507 judges whether to occur the Cold sign.If get into step S508; If, then do not get into step S506.
Step S508, timer picks up counting, and gets into step S509.
Step S509 starts well heater and heats, and gets into step S510.
Step S510 judges that whether timing time is greater than the second preset judgement time t2.If then get into step S511; If, then do not get into step S506.
Step S511 closes well heater, gets into step S512.
Step S512, timer restarts timing, gets into step S513.
Step S513 judges that whether timing time is greater than preset lengthening judgement time t3.If then get into step S514; If, then do not get into step S506.
Step S514, Bottom Senser Error or Top Senser Error report to the police, and get into step S515.
Step S515 closes well heater.
Specifically; When the first collecting temperature Tt judges temperature T 0 greater than preset reference; And when the second collecting temperature Tb judges temperature T 0 less than preset reference; Start timer, if the duration that the second collecting temperature Tb judges temperature T 0 less than preset reference greater than the first preset reference judgement time t1, is judged second sensor abnormality; When the second collecting temperature Tb judges temperature T 0 greater than preset reference; And when the first collecting temperature Tt judges temperature T 0 less than preset reference; Start timer; If the duration that the first collecting temperature Tt judges temperature T 0 less than preset reference judges that greater than the first preset reference judgement time t1 first sensor is unusual; When the first collecting temperature Tt and the second collecting temperature Tb all judge temperature T 0 less than preset reference; Start timer; Start well heater simultaneously; If the duration that the first collecting temperature Tt and the second collecting temperature Tb all judge temperature T 0 less than preset reference judges then that greater than the second preset reference judgement time t2 first sensor and second sensor are all unusual; If the duration that the first collecting temperature Tt and the second collecting temperature Tb all judge temperature T 0 less than preset reference then is judged as the low temperature environment temperature less than the second preset reference judgement time t2.In order to increase the accuracy of judging more; The first collecting temperature Tt and the second collecting temperature Tb all judge temperature T 0 less than preset reference duration greater than the second preset reference judgement time t2 after; Close well heater; Restart timer, if the duration that the first collecting temperature Tt and the second collecting temperature Tb all judge temperature T 0 less than preset reference greater than preset lengthening judgement time t3, is then judged the first sensor and second sensor abnormality; If the duration that the first collecting temperature Tt and the second collecting temperature Tb all judge temperature T 0 less than preset reference then is judged as the low temperature environment temperature less than preset lengthening judgement time t3.
In an example of the present invention; Preset reference judges that the scope of temperature T 0 can be between-10 ℃ to-40 ℃; The scope of its AD value can be between the 02H to 03H; The scope of the first preset reference judgement time t1 can be between the 1s to 10s, and the scope of the second preset reference judgement time t2 is between the 10s to 40s, and the scope of preset lengthening judgement time t3 is between the 20s to 60s.
According to the fault judgment method of the ambient temperature detection device of the embodiment of the invention, can distinguish low-temperature condition and sensor fault state timely and effectively, prevented that erroneous judgement is disconnected, improved judging nicety rate greatly, this outer control is simple, and is convenient and practical.
The fault judgment method of the ambient temperature detection device that third aspect present invention embodiment proposes is described with reference to Fig. 5 and Fig. 6 below.
As shown in Figure 6, when ambient temperature detection device that ambient temperature detection device proposes for first aspect present invention embodiment, the fault judgment method of this ambient temperature detection device may further comprise the steps:
Step S601, collecting temperature parameter Tt and Tb also handle.Particularly, microprocessor module receives the first collecting temperature Tt and the second collecting temperature Tb that the temperature parameter acquisition module is gathered, and the temperature parameter acquisition module adopts negative temperature parameter circuit.
Step S602 judges that whether Tt is greater than t0.Judge temperature T 0 if the first collecting temperature Tt is not more than preset reference, then get into next step S603; If the first collecting temperature Tt judges temperature T 0 greater than preset reference, then get into step S604.
Step S603 judges that whether Tb is greater than T0.Judge temperature T 0 if the second collecting temperature Tb is not more than preset reference, then get into next step S608; If the second collecting temperature Tb judges temperature T 0 greater than preset reference, then get into step S605.
Step S604 continues to judge that whether Tb is greater than T0.Judge temperature T 0 if the second collecting temperature Tb is not more than preset reference, then get into next step S606; If the second collecting temperature Tb judges temperature T 0 greater than preset reference, then get into step S607.
Step S605 puts Bottom Error sign, i.e. second sensor abnormality.
Step S606 puts Top Error sign, and promptly first sensor is unusual.
Step S607 puts the Cold sign, and promptly current environmental temperature is in low-temperature condition.
Step S608, clear Bottom Error sign, Top Error sign and Cold sign, the promptly current normal mode of operation that is in.
In conjunction with Fig. 5; Specifically; When the first collecting temperature Tt judges temperature T 0 greater than preset reference, and the second collecting temperature Tb starts timer when judging temperature T 0 less than preset reference; If the duration that the first collecting temperature Tt judges temperature T 0 greater than preset reference judges that greater than the first preset reference judgement time t1 first sensor is unusual; When the second collecting temperature Tb judges temperature t 0 greater than preset reference; And when the first collecting temperature Tt judges temperature t 0 less than preset reference; Start timer; If the duration that the second collecting temperature Tb judges temperature T 0 greater than preset reference starts timer greater than the first preset reference judgement time t1, start well heater simultaneously; If the duration that the first collecting temperature Tt and the second collecting temperature Tb all judge temperature T 0 greater than preset reference judges then that greater than the second preset reference judgement time t2 first sensor and second sensor are all unusual; If the duration that the first collecting temperature Tt and the second collecting temperature Tb all judge temperature T 0 greater than preset reference then is judged as the low temperature environment temperature less than the second preset reference judgement time t2.In order to increase the accuracy of judging more; The first collecting temperature Tt and the second collecting temperature Tb all judge temperature T 0 greater than preset reference duration greater than the second preset reference judgement time t2 after; Close well heater; Restart timer, if the duration that the first collecting temperature Tt and the second collecting temperature Tb all judge temperature T 0 greater than preset reference greater than preset lengthening judgement time t3, is then judged the first sensor and second sensor abnormality; If the duration that the first collecting temperature Tt and the second collecting temperature Tb all judge temperature T 0 greater than preset reference then is judged as the low temperature environment temperature less than preset lengthening judgement time t3.
In an example of the present invention; Preset reference judges that the scope of temperature T 0 can be about between-10 ℃ to-40 ℃; The scope of its AD value can be between the 0EFH to 0F0H; The scope of the first preset reference judgement time t1 can be between the 1s to 10s, and the scope of the second preset reference judgement time t2 is between the 10s to 40s, and the scope of preset lengthening judgement time t3 is between the 20s to 60s.
Present embodiment combines the characteristics of electric equipment products such as electric cooker, comprises two temperature sensors in the temperature parameter acquisition module, exports two temperature signals.In order to reach determine effect more accurately; Also can adopt one or three or more a plurality of temperature sensors; Export one or three or more a plurality of temperature signals; As the abnormal signal of single temperature sensor appears, and hold time and surpass the first preset reference judgement time, then can be judged as this temperature sensor fault; As the abnormal signal of all temperature sensors appears, and hold time and surpass preset lengthening judgement time, then can be judged as all temperature sensor faults, otherwise be judged as low temperature environment, recover operate as normal automatically.
According to the fault judgment method of the ambient temperature detection device of the embodiment of the invention, can distinguish low-temperature condition and sensor fault state timely and effectively, prevented that erroneous judgement is disconnected, improved judging nicety rate greatly, this outer control is simple, and is convenient and practical.
Describe and to be understood that in the process flow diagram or in this any process otherwise described or method; Expression comprises module, fragment or the part of code of the executable instruction of the step that one or more is used to realize specific logical function or process; And the scope of preferred implementation of the present invention comprises other realization; Wherein can be not according to order shown or that discuss; Comprise according to related function and to carry out function by the mode of basic while or by opposite order, this should be understood by the embodiments of the invention person of ordinary skill in the field.
In process flow diagram the expression or in this logic of otherwise describing and/or step; For example; Can be considered to be used to realize the sequencing tabulation of the executable instruction of logic function; May be embodied in any computer-readable medium; Use for instruction execution system, device or equipment (like computer-based system, comprise that system or other of processor can be from the systems of instruction execution system, device or equipment instruction fetch and execution command), or combine these instruction execution systems, device or equipment and use.With regard to this instructions, " computer-readable medium " can be anyly can comprise, storage, communication, propagation or transmission procedure are for instruction execution system, device or equipment or combine these instruction execution systems, device or equipment and the device that uses.The example more specifically of computer-readable medium (non-exhaustive list) comprises following: the electrical connection section (electronic installation) with one or more wirings; Portable computer diskette box (magnetic device); Random-access memory (ram), ROM (read-only memory) (ROM) can be wiped and can edit ROM (read-only memory) (EPROM or flash memory); Fiber device, and portable optic disk ROM (read-only memory) (CDROM).In addition; Computer-readable medium even can be paper or other the suitable media that to print said program above that; Because can be for example through paper or other media are carried out optical scanning; Then edit, decipher or handle to obtain said program with other suitable methods in case of necessity with the electronics mode, then it is stored in the computer memory.
Should be appreciated that each several part of the present invention can use hardware, software, firmware or their combination to realize.In the above-described embodiment, a plurality of steps or method can realize with being stored in the storer and by software or firmware that suitable instruction execution system is carried out.For example; If realize with hardware; The same in another embodiment, each in the available following technology well known in the art or their combination realize: have the discrete logic that is used for data-signal is realized the logic gates of logic function, have the special IC of suitable combinational logic gate circuit; Programmable gate array (PGA), field programmable gate array (FPGA) etc.
Those skilled in the art are appreciated that and realize that all or part of step that the foregoing description method is carried is to instruct relevant hardware to accomplish through program; Described program can be stored in a kind of computer-readable recording medium; This program comprises one of step or its combination of method embodiment when carrying out.
In addition, each functional unit in each embodiment of the present invention can be integrated in the processing module, also can be that the independent physics in each unit exists, and also can be integrated in the module two or more unit.Above-mentioned integrated module both can adopt the form of hardware to realize, also can adopt the form of software function module to realize.If said integrated module realizes with the form of software function module and during as independently production marketing or use, also can be stored in the computer read/write memory medium.
The above-mentioned storage medium of mentioning can be a ROM (read-only memory), disk or CD etc.
In the description of this instructions, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means the concrete characteristic, structure, material or the characteristics that combine this embodiment or example to describe and is contained at least one embodiment of the present invention or the example.In this manual, the schematic statement to above-mentioned term not necessarily refers to identical embodiment or example.And concrete characteristic, structure, material or the characteristics of description can combine with suitable manner in any one or more embodiment or example.
Although illustrated and described embodiments of the invention; For those of ordinary skill in the art; Be appreciated that under the situation that does not break away from principle of the present invention and spirit and can carry out multiple variation, modification, replacement and modification that scope of the present invention is accompanying claims and be equal to and limit to these embodiment.

Claims (13)

1. an ambient temperature detection device is characterized in that, comprising:
The temperature parameter acquisition module, said temperature parameter acquisition module comprises one or more sensor, is used for through said one or more sensor acquisition current environmental temperature to generate one or more collecting temperature;
Microprocessor module; Said microprocessor module links to each other with said temperature parameter acquisition module; Be used for said one or more collecting temperature is analyzed; Whether occur unusually with the said one or more sensor of judging said temperature parameter acquisition module, or judge whether said current environmental temperature is in low-temperature condition, and generate the control corresponding instruction;
The control output module, said control output module links to each other with said microprocessor module, is used for producing drive signal according to the steering order of said microprocessor module; And
Power module, said power module link to each other with said temperature parameter acquisition module, said microprocessor module and said control output module respectively, are used to said temperature parameter acquisition module, said control output module and the power supply of said microprocessor module.
2. ambient temperature detection device according to claim 1 is characterized in that, said temperature parameter acquisition module comprises first sensor, and said microprocessor module judges in the following manner whether said first sensor occurs unusually:
When said first collecting temperature is judged temperature less than preset reference, start timer, if the duration that said first collecting temperature is judged temperature less than said preset reference greater than the first preset reference judgement time, judges that said first sensor is unusual; If said first collecting temperature is not more than the first preset reference judgement time less than the duration of said preset reference judgement temperature, be judged as the low temperature environment temperature.
3. ambient temperature detection device according to claim 1; It is characterized in that; Said temperature parameter acquisition module comprises the first sensor and second sensor, is used for through said first sensor and the second sensor acquisition current environmental temperature to generate first collecting temperature and second collecting temperature respectively;
Said microprocessor module links to each other with said temperature parameter acquisition module; Be used for said first collecting temperature or second collecting temperature are analyzed; Whether the said first sensor and/or second sensor to judge said temperature parameter acquisition module occur unusually; Or judge whether said current environmental temperature is in low-temperature condition, and generate the control corresponding instruction.
4. according to claim 1 or 3 described ambient temperature detection devices, it is characterized in that, also comprise:
Express module, said expression module links to each other with said power module with said microprocessor module respectively, is used for generating corresponding expression signal according to the result of said microprocessor module.
5. ambient temperature detection device according to claim 3 is characterized in that, said microprocessor module judges in the following manner whether the said first sensor and/or second sensor occur unusually:
When being not less than preset reference, said first collecting temperature judges temperature; And when said second collecting temperature is judged temperature less than said preset reference; Start timer; If the duration that said second collecting temperature is judged temperature less than said preset reference is judged said second sensor abnormality greater than the first preset reference judgement time;
When being not less than preset reference, said second collecting temperature judges temperature; And when said first collecting temperature is judged temperature less than said preset reference; Start timer; If the duration that said first collecting temperature is judged temperature less than said preset reference judges that greater than the said first preset reference judgement time said first sensor is unusual; And
When said first collecting temperature and second collecting temperature are all judged temperature less than said preset reference; Start timer; Start well heater simultaneously; If the duration that first collecting temperature and second collecting temperature are all judged temperature less than preset reference judges that greater than the second preset reference judgement time first sensor and second sensor are all unusual; If first collecting temperature and second collecting temperature all are not more than the second preset reference judgement time less than the duration of preset reference judgement temperature, then be judged as the low temperature environment temperature.
6. ambient temperature detection device according to claim 4; It is characterized in that; Said first collecting temperature and second collecting temperature are all judged temperature less than preset reference duration greater than the second preset reference judgement time after, close well heater, restart timer; If the duration that first collecting temperature and second collecting temperature are all judged temperature less than preset reference is judged the first sensor and second sensor abnormality greater than preset lengthening judgement time; If first collecting temperature and second collecting temperature all are not more than preset lengthening judgement time less than the duration of preset reference judgement temperature, then be judged as the low temperature environment temperature.
7. ambient temperature detection device according to claim 4 is characterized in that, the said second preset judgement time is greater than the first preset reference judgement time.
8. according to claim 2,5,6 each described ambient temperature detection devices, it is characterized in that said microprocessor module also is used for when judging said first sensor and/or said second sensor abnormality, reporting to the police also, control heater stops heating.
9. according to claim 2,5,6 each described ambient temperature detection devices; It is characterized in that; Said preset reference judges that the scope of temperature is between-10 ℃ to-40 ℃; The scope of the said first preset reference judgement time t1 can be between the 1s to 10s, and the scope of the said second preset reference judgement time t2 is between the 10s to 40s, and the scope of said preset lengthening judgement time t3 is between the 20s to 60s.
10. according to claim 1 or 3 described ambient temperature detection devices, it is characterized in that said power module further comprises:
High-tension electricity input submodule is used for linking to each other with the external high pressure electricity; And
Direct current generates submodule, is used for converting said external high pressure electricity into direct current.
11. the fault judgment method of an ambient temperature detection device is characterized in that, said ambient temperature detection device is like each described ambient temperature detection device of claim 1-10, said method comprising the steps of:
Said microprocessor module receives first collecting temperature and second collecting temperature that said temperature parameter acquisition module is gathered;
When being not less than preset reference, said first collecting temperature judges temperature; And when said second collecting temperature is judged temperature less than said preset reference; Start timer; If the duration that said second collecting temperature is judged temperature less than said preset reference, said microprocessor module was judged said second sensor abnormality greater than the first preset reference judgement time;
When being not less than preset reference, said second collecting temperature judges temperature; And when said first collecting temperature is judged temperature less than said preset reference; Start timer; If the duration that said second collecting temperature is judged temperature less than said preset reference is judged said second sensor abnormality greater than the first preset reference judgement time; Said microprocessor module judges that said first sensor is unusual; And
When said first collecting temperature and second collecting temperature are all judged temperature less than said preset reference; Start timer; Start well heater simultaneously; If the duration that first collecting temperature and second collecting temperature are all judged temperature less than preset reference is greater than the second preset reference judgement time, said microprocessor module judges that first sensor and second sensor are all unusual; If first collecting temperature and second collecting temperature all are not more than the second preset reference judgement time less than the duration of preset reference judgement temperature, said microprocessor module is judged as the low temperature environment temperature.
12. the fault judgment method of ambient temperature detection device according to claim 11 is characterized in that, also comprises:
The duration that first collecting temperature and second collecting temperature are all judged temperature less than preset reference greater than the second preset reference judgement time after; Close well heater; Restart timer; If the duration that first collecting temperature and second collecting temperature are all judged temperature less than preset reference, said microprocessor module was judged the first sensor and second sensor abnormality greater than preset lengthening judgement time; If first collecting temperature and second collecting temperature all are not more than preset lengthening judgement time less than the duration of preset reference judgement temperature, said microprocessor module is judged as the low temperature environment temperature.
13. fault judgment method according to claim 11 or 12 described ambient temperature detection devices; It is characterized in that; Said preset reference judges that the scope of temperature is between-10 ℃ to-40 ℃; The scope of the said first preset reference judgement time t1 can be between the 1s to 10s, and the scope of the said second preset reference judgement time t2 is between the 10s to 40s, and the scope of said preset lengthening judgement time t3 is between the 20s to 60s.
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CN103808964A (en) * 2012-11-13 2014-05-21 博世汽车部件(苏州)有限公司 Method for diagnosing fault of wheel speed sensor of vehicle, and corresponding controller and vehicle
CN104038221A (en) * 2013-03-07 2014-09-10 美的集团股份有限公司 Electric heater and method for carrying out fault identification on AD input device of electric heater
CN104181957A (en) * 2014-01-22 2014-12-03 漳州灿坤实业有限公司 An electrical heating control system and an electronic temperature-sensitive rod designed by utilizing the system
CN104570867A (en) * 2014-12-26 2015-04-29 广东美的厨房电器制造有限公司 Abnormity diagnosis method, abnormity diagnosis system, server, household electrical appliance and environment sensor
CN104990644A (en) * 2015-07-06 2015-10-21 湖北美的电冰箱有限公司 Fault detection device and method of temperature sensor for refrigerator
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CN110702273A (en) * 2019-10-15 2020-01-17 苏州伟创电气科技股份有限公司 Frequency converter temperature sensor abnormality detection method, frequency converter and storage medium
CN110850910A (en) * 2018-08-20 2020-02-28 浙江宇视科技有限公司 Heating control method and device and electronic equipment

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CN103808964A (en) * 2012-11-13 2014-05-21 博世汽车部件(苏州)有限公司 Method for diagnosing fault of wheel speed sensor of vehicle, and corresponding controller and vehicle
CN104038221A (en) * 2013-03-07 2014-09-10 美的集团股份有限公司 Electric heater and method for carrying out fault identification on AD input device of electric heater
CN104038221B (en) * 2013-03-07 2017-04-19 美的集团股份有限公司 Electric heater and method for carrying out fault identification on AD input device of electric heater
CN104181957A (en) * 2014-01-22 2014-12-03 漳州灿坤实业有限公司 An electrical heating control system and an electronic temperature-sensitive rod designed by utilizing the system
CN103759860A (en) * 2014-02-20 2014-04-30 北京七星华创电子股份有限公司 Thermocouple fault diagnosis and processing method and system of semiconductor heat treatment device
CN103759860B (en) * 2014-02-20 2016-08-17 北京七星华创电子股份有限公司 A kind of thermocouple fault diagnosis filter method and system based on model
CN104570867A (en) * 2014-12-26 2015-04-29 广东美的厨房电器制造有限公司 Abnormity diagnosis method, abnormity diagnosis system, server, household electrical appliance and environment sensor
CN104990326A (en) * 2015-06-26 2015-10-21 青岛海尔股份有限公司 Refrigerator and temperature measuring method based on infrared sensors
CN104990326B (en) * 2015-06-26 2018-02-02 青岛海尔股份有限公司 Refrigerator and the thermometry based on infrared sensor
CN104990644A (en) * 2015-07-06 2015-10-21 湖北美的电冰箱有限公司 Fault detection device and method of temperature sensor for refrigerator
CN106197758A (en) * 2016-06-29 2016-12-07 广东美的厨房电器制造有限公司 The fault detection method of temperature sensing circuit and device
CN106197758B (en) * 2016-06-29 2019-06-28 广东美的厨房电器制造有限公司 The fault detection method and device of temperature sensing circuit
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