CN202869689U - Double-temperature-zone single probe capable of automatically identifying and correcting error - Google Patents
Double-temperature-zone single probe capable of automatically identifying and correcting error Download PDFInfo
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- CN202869689U CN202869689U CN 201220567782 CN201220567782U CN202869689U CN 202869689 U CN202869689 U CN 202869689U CN 201220567782 CN201220567782 CN 201220567782 CN 201220567782 U CN201220567782 U CN 201220567782U CN 202869689 U CN202869689 U CN 202869689U
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Abstract
The utility model discloses a double-temperature-zone single probe capable of automatically identifying and correcting errors. The double-temperature-zone single probe comprises two completely identical sensors, namely, sensor A and sensor B, and a fault detection unit which is used for detecting whether faults exist in the sensors, wherein consistency of the sensor A and the sensor B is smaller than 0.1 DEG C; and the fault detection unit is connected with the sensor A and the sensor B respectively. The double-temperature-zone single probe is high in reliability, prevents deviation in temperature of a cool storage caused by a single damaged sensor, and thus prevents property loss.
Description
Technical field
The utility model relates to a kind of temperature probe, is specifically related to a kind of two warm area list probes that can automatically identify error correction of high reliability and the automatic error correction method of this probe thereof.
Background technology
The temperature probe of at present freezing and refrigeration field use is the thermosensitive resistance type temperature sensor mostly, NTC sensor of a probe the inside encapsulation of this temperature sensor, sensor itself does not have accurate fault detection capability, only provides a resistance value that varies with temperature and change to calculate for Single Chip Microcomputer (SCM) system.
When refrigeration system is worked, the fault such as temperature probe can occur inevitably such as short circuit, opens circuit, temperature drift.When be short-circuited, during open circuit fault, although system can detect fault, system will have to end to relate to system's subfunction of this signal this moment; When system sensor occurrence temperature drifting fault, the generation that traditional sensor can't be known this fault whether.The probability of this temperature sensor ten thousand/damage, with the temperature deviation fault that causes in the freezer unit operation, the temperature requirement that causes freezer occurs departing from and finally causes property loss.
The utility model content
The utility model purpose: the purpose of this utility model is in order to solve the deficiencies in the prior art, and two warm area lists probes that the high energy of a kind of reliability can identify error correction automatically and the automatic error correction method of this probe thereof are provided.
Technical scheme: in order to realize above purpose, a kind of two warm area list probes that can automatically identify error correction described in the utility model, comprise: two identical sensors: sensors A and sensor B, and the fault detection unit that whether has fault for detection of sensor; The consistance of described sensors A and sensor B is less than 0.1 ℃; Described fault detection unit is connected with sensors A, sensor B respectively.The common port of sensors A described in the utility model and sensor B can link together.
A kind of two warm area lists probe that can automatically identify error correction described in the utility model also comprises: display unit, and the temperature value that this display unit read sensor A and sensor B detect, and temperature value demonstrated.A sensor is used for the normal storehouse temperature that detects in the utility model, and another sensor is used for the temperature difference than the compared with normal probe.
The invention also discloses a kind of automatic error correction method that can automatically identify two warm area list probes of error correction, specific as follows:
(1) starts single probe, the single probe of initialization;
(2) sensors A are used for the normal storehouse temperature that detects, and another sensor B is used for the temperature difference than compared with normal probe, and when the temperature difference during less than the critical temperature value set, list is popped one's head in working properly, damages without sensor; When the temperature difference during more than or equal to the critical temperature value set, fault detection unit startup work;
(3) after the fault processing unit work, according to each sensor between one section hour in the rate of curve of resistance-time, judge which is fault sensor in two sensors:
(a) if the sudden change of sensor detected resistance and resistance become very large among sensors A and the sensor B, the AD value can judge then that near maximal value this sensor opens circuit;
(b) if the sudden change of sensor detected resistance and resistance become very little among sensors A and the sensor B, the AD value can judge then that near minimum value this sensor is short-circuited;
(c) if above two kinds of situations all occur among sensors A and the sensor B, and the rapid variation of resistance-vs. temperature of single probe, change in resistance is non-linear more and more serious, thinks the sensor occurrence temperature drifting fault that resistance varying-ratio is larger;
(4) judge fault sensor after, fault detection unit is reported to the police, and points out fault sensor; And normal sensor automatically replaces fault sensor and carries out emergency; Before the temperature difference between sensors A and the sensor B is less than the critical temperature value of setting, with the generation that no longer comes failure judgement according to the variation slope of resistance relative time whether, but take two poor sizes of sensor temperature as judging according to carrying out fault.Before fault recovery, systematic memory fault sensor, fault detection unit are no longer judged fault sensor by the rate of curve size of resistance-time;
(5) change fault sensor, when the temperature difference of sensors A and sensor B during less than the critical temperature value set, the cancellation of reporting to the police.
Beneficial effect: the utility model compared with prior art has the following advantages:
(1) the utility model has adopted two identical sensor for temperature to monitor, and reliability is high, has avoided causing the temperature requirement of freezer to occur departing from because single-sensor damages, and has avoided property loss;
(2) method described in the utility model can detection failure sensor and failure judgement type, and simple and fast can place under repair to the sensor that produces fault according to fault type, does not affect the use of another normal sensor simultaneously, and practicality is high;
(3) in the utility model when breaking down sensor, the working sensor that normal sensor substitutes fault also sends warning, maintenance is convenient, understand.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with specific embodiment, further illustrate the utility model, should understand these embodiment only is used for explanation the utility model and is not used in restriction scope of the present utility model, after having read the utility model, those skilled in the art all fall within the application's claims limited range to the modification of the various equivalent form of values of the present utility model.
Embodiment
A kind of two warm area list probes that can automatically identify error correction comprise: two identical sensors: sensors A and sensor B, and the fault detection unit that whether has fault for detection of sensor; The consistance of described sensors A and sensor B is less than 0.1 ℃; Described fault detection unit is connected with sensors A, sensor B respectively.The common port of sensors A described in the present embodiment and sensor B can link together; Sensors A is in the front of sensor B.
Present embodiment also discloses the above-mentioned automatic error correction method that can automatically identify two warm area list probes of error correction, and is specific as follows:
(1) starts single probe, the single probe of initialization; The critical temperature value of setting is 1.5 ℃;
(2) sensors A are used for the normal storehouse temperature that detects, and another sensor B is used for the temperature difference than compared with normal probe, and when the temperature difference during less than 1.5 ℃, list is popped one's head in working properly, damages without sensor; When the temperature difference during more than or equal to ± 1.5 ℃, fault detection unit startup work;
(3) after the fault processing unit work, according to each sensor between one section hour in the rate of curve of resistance-time, judge which is fault sensor in two sensors:
(a) if the sudden change of sensor detected resistance and resistance become very large among sensors A and the sensor B, the AD value can judge then that near maximal value this sensor opens circuit;
(b) if the sudden change of sensor detected resistance and resistance become very little among sensors A and the sensor B, the AD value can judge then that near minimum value this sensor is short-circuited;
(c) if above two kinds of situations all occur among sensors A and the sensor B, and the rapid variation of resistance-vs. temperature of single probe, change in resistance is non-linear more and more serious, thinks the sensor occurrence temperature drifting fault that resistance varying-ratio is larger;
(4) judge fault sensor after, fault detection unit is reported to the police, and points out fault sensor; And normal sensor automatically replaces fault sensor and carries out emergency; Before the temperature difference between sensors A and the sensor B is less than 1.5 ℃, with the generation that no longer comes failure judgement according to the variation slope of resistance relative time whether, but take two poor sizes of sensor temperature as judging according to carrying out fault.Before fault recovery, systematic memory fault sensor, fault detection unit are no longer judged fault sensor by the rate of curve size of resistance-time;
(5) change fault sensor, when the temperature difference of sensors A and sensor B during less than 1.5 ℃, the cancellation of reporting to the police.
Claims (3)
1. the two warm area list probes that can automatically identify error correction is characterized in that: comprising: two identical sensors: sensors A and sensor B, and the fault detection unit that whether has fault for detection of sensor; The consistance of described sensors A and sensor B is less than 0.1 ℃; Described fault detection unit is connected with sensors A, sensor B respectively.
2. the two warm area lists probe that can automatically identify error correction according to claim 1 is characterized in that: comprise display unit, and the temperature value that display unit read sensor A and sensor B detect, and temperature value demonstrated.
3. the two warm area lists that can automatically identify error correction according to claim 1 are popped one's head in, and it is characterized in that: described sensors A and sensor B common port link together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220567782 CN202869689U (en) | 2012-11-01 | 2012-11-01 | Double-temperature-zone single probe capable of automatically identifying and correcting error |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220567782 CN202869689U (en) | 2012-11-01 | 2012-11-01 | Double-temperature-zone single probe capable of automatically identifying and correcting error |
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| CN202869689U true CN202869689U (en) | 2013-04-10 |
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| CN 201220567782 Expired - Fee Related CN202869689U (en) | 2012-11-01 | 2012-11-01 | Double-temperature-zone single probe capable of automatically identifying and correcting error |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102928123A (en) * | 2012-11-01 | 2013-02-13 | 苏州新亚科技有限公司 | Dual-temperature zone single probe capable of realizing automatic identification and error correction and automatic error correction method thereof |
| CN107132866A (en) * | 2016-02-26 | 2017-09-05 | 捷温有限责任公司 | Temperature equipment and the inspection functional method of sensor device |
| CN114675683A (en) * | 2022-03-08 | 2022-06-28 | 南京巨鲨显示科技有限公司 | Method and device for controlling internal temperature of medical display |
-
2012
- 2012-11-01 CN CN 201220567782 patent/CN202869689U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102928123A (en) * | 2012-11-01 | 2013-02-13 | 苏州新亚科技有限公司 | Dual-temperature zone single probe capable of realizing automatic identification and error correction and automatic error correction method thereof |
| CN107132866A (en) * | 2016-02-26 | 2017-09-05 | 捷温有限责任公司 | Temperature equipment and the inspection functional method of sensor device |
| CN107132866B (en) * | 2016-02-26 | 2019-04-05 | 捷温有限责任公司 | Temperature equipment and the inspection functional method of sensor device |
| US10605497B2 (en) | 2016-02-26 | 2020-03-31 | Gentherm Gmbh | Device for regulating the temperature of at least one object and method for checking the functional capability of a sensor device having at least two sensors |
| CN114675683A (en) * | 2022-03-08 | 2022-06-28 | 南京巨鲨显示科技有限公司 | Method and device for controlling internal temperature of medical display |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130410 Termination date: 20151101 |
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| EXPY | Termination of patent right or utility model |