CN102662103A - Method for preventing false alarms of alarm device - Google Patents
Method for preventing false alarms of alarm device Download PDFInfo
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- CN102662103A CN102662103A CN2012101453654A CN201210145365A CN102662103A CN 102662103 A CN102662103 A CN 102662103A CN 2012101453654 A CN2012101453654 A CN 2012101453654A CN 201210145365 A CN201210145365 A CN 201210145365A CN 102662103 A CN102662103 A CN 102662103A
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Abstract
The invention relates to the technical field of the alarm device and discloses a method for preventing false alarms of an alarm device, specifically comprising the following steps of: starting timing by using a timer when a sensor is powered on, and performing no alarm processing on a signal voltage within a certain time range T1; at the expiry of a predetermined time threshold, detecting the signal voltage of the sensor, comparing the detected sensor signal voltage with an allowable alarm voltage, and giving an alarm if the detected sensor signal voltage is higher than the allowable alarm voltage; and directly performing alarm processing according to an predetermined alarm voltage if the detected sensor signal voltage is lower than the predetermined alarm voltage; otherwise, continuously detecting the detector signal voltage, wherein the allowable alarm voltage descends as the power on time is increased. As the allowable alarm voltage changes along with the change of the power on time of the sensor, the problem of false alarms caused by different own individual properties and aging degrees of sensors when a single alarm point of one sensor is set is solved.
Description
Technical field
The present invention relates to the alarm technical field, relate in particular to a kind of method that prevents the alarm false alarm.
Background technology
Alarm generally is whether the voltage on the detecting sensor is higher than a fixed value and judges whether to send alerting signal; In the prior art; Usually set an alarm voltage value,, just send alerting signal as long as the voltage that detects on the sensor is higher than the alarm voltage value.Yet in the process that sensor has just powered on, high voltage might occur, cause the situation of false alarm, if sensor storage condition before working on power is abominable, also might causing powers on, and to recover stabilization time elongated and cause false alarm.While, the individual performance of its sensor also difference can occur, causes false alarm along with sensor is aging.Do not prevent the alarm false alarm and have a kind of effective method in the prior art.
Summary of the invention
To the problem of above-mentioned alarm false alarm, the invention discloses a kind of method that prevents the alarm false alarm.
The object of the invention is realized through following technical proposals:
A kind of method that prevents the alarm false alarm, it specifically comprises following steps: timer picks up counting when sensor powers on, in certain hour scope T1, not to the signal voltage processing of reporting to the police; Behind the time threshold of arrive setting, the signal voltage of detecting sensor, and with detected sensor signal voltage with allow alarm voltage relatively, if detected sensor signal voltage is higher than the permission alarm voltage, then report to the police; If detected sensor signal voltage is lower than alarm settings voltage, then directly according to the processing of reporting to the police of alarm settings voltage; Otherwise, continue the detecting sensor signal voltage; Said permission alarm voltage reduces with the power-on time increase of sensor.
Preferably; After said method also is included in beginning detecting sensor signal voltage a period of time T2; Directly detected sensor signal voltage and alarm settings voltage are compared,, then report to the police if detected sensor signal voltage is higher than alarm settings voltage; Otherwise, continue the detecting sensor signal voltage.
Preferably, said permission alarm voltage=sensor allows maximum operating voltage-(sensor allows maximum operating voltage-alarm settings voltage)/T2* (t-T1); Wherein T1 is the time period of signal voltage not being reported to the police and handling; T2 is for directly comparing the time period that ends with detected sensor signal voltage and alarm settings voltage from beginning detecting sensor signal voltage to what set, and t begins the time to current for powering on from sensor.
Preferably, said method also comprises, if detected sensor signal voltage less than alarm settings voltage, does not then allow the calculating of alarm voltage.
Preferably, said method also comprises, allows maximum operating voltage if detected sensor signal voltage is higher than sensor, and then alarm sends fault-signal.
Preferably, said sensor is a semiconductor transducer.
Beneficial effect of the present invention: be set in the certain hour scope; Not to the signal voltage processing of reporting to the police; Because the high voltage that when sensor just powers on, occurs is the speciality decision of sensor self,, reduced the content of system works so do not report to the police; Also avoided false alarm; To allow alarm voltage to change simultaneously, when having avoided single setting sensor alarm set point, because the problem of the different false alarms that occur of the individual character of sensor self and degree of aging according to the time that sensor powers on.Among the present invention, time threshold can be set according to the needs of warning system flexibly, can farthest avoid the problem of false alarm.Sensor need not carry out strict aging production simultaneously, because alarm has increased burin-in process, has increased production efficiency.
Description of drawings
Fig. 1 is the method that prevents the alarm false alarm of the present invention.
Embodiment
The invention discloses a kind of method that prevents the alarm false alarm; The method that prevents the alarm false alarm of the present invention as shown in Figure 1; It specifically comprises following steps: timer picks up counting when sensor powers on, in certain hour scope T1, not to the signal voltage processing of reporting to the police; Behind the time threshold of arrive setting, the signal voltage of detecting sensor, and with detected sensor signal voltage with allow alarm voltage relatively, if detected sensor signal voltage is higher than the permission alarm voltage, then report to the police; If detected sensor signal voltage is lower than alarm settings voltage, then directly according to the processing of reporting to the police of alarm settings voltage; Otherwise, continue the detecting sensor signal voltage; Said permission alarm voltage reduces with the power-on time increase of sensor.Among the present invention, at first, be set in the certain hour scope; Not to the signal voltage processing of reporting to the police; Because the high voltage that when sensor just powers on, occurs is the speciality decision of sensor self,, reduced the content of system works so do not report to the police; Also avoided false alarm; To allow alarm voltage to change simultaneously, when having avoided single setting sensor alarm set point, because the problem of the different false alarms that occur of the individual character of sensor self and degree of aging according to the time that sensor powers on.Among the present invention, time threshold can be set according to the needs of warning system flexibly, can farthest avoid the problem of false alarm.Sensor need not carry out strict aging production simultaneously, because alarm has increased burin-in process, has increased production efficiency.
Preferably; After said method also is included in beginning detecting sensor signal voltage a period of time T2; Directly detected sensor signal voltage and alarm settings voltage are compared,, then report to the police if detected sensor signal voltage is higher than alarm settings voltage; Otherwise, continue the detecting sensor signal voltage.After a period of time, generally speaking, sensor signal voltage has returned to normal value at working sensor, just can directly detected sensor signal voltage and alarm settings voltage be compared, and judges whether to send alerting signal.If sensor signal voltage does not also return to normal value in this time period, prove that sensor had lost efficacy cisco unity malfunction.Promptly power at sensor after (T1+T2), it is consistent with alarm work method of the prior art that above-mentioned detection determination methods is tending towards.
Preferably, said permission alarm voltage=sensor allows maximum operating voltage-(sensor allows maximum operating voltage-alarm settings voltage)/T2* (t-T1); Wherein T1 is the time period of signal voltage not being reported to the police and handling; T2 is for directly comparing the time period that ends with detected sensor signal voltage and alarm settings voltage from beginning detecting sensor signal voltage to what set, and t begins the time to current for powering on from sensor.As to set T1 be 5 minutes, and T2 is 25 minutes, and promptly the T2 period is the 5th minute to the 30th minute; Suppose that it is 4.6V that sensor allows maximum operating voltage, alarm settings voltage is 1.6V.Then alarm in 5 minutes clock time (T1) that just powered on not to the signal voltage processing of reporting to the police, even that is to say that the signal voltage of sensor is higher than 4.6V and does not also report fault.In the 2nd time period (T2), according to current power-on time t, utilize above-mentioned formula to calculate warning and allow voltage, judge whether to report to the police according to this value then.After the time of (T1+T2) of powering at sensor finished, no matter how many sensor signal voltage be, all uses the alarm settings voltage of 1.6V to judge whether warning.When just in time being 5 minutes, allow alarm voltage=4.6-(4.6-1.6)/25* (5-5)=4.6V at current power-on time, just in time equal sensor and allow maximum operating voltage; When current power-on time is 20 minutes, allow alarm voltage=4.6-(4.6-1.6)/25* (20-5)=2.2V; When just in time being 30 minutes, allow alarm voltage=4.6-(4.6-1.6)/25* (30-5)=1.6V at current power-on time, just in time equal alarm settings voltage, alarm voltage just in time is a continuous curve along with time change.
Preferably, said method also comprises, if detected sensor signal voltage less than alarm settings voltage, does not then allow the calculating of alarm voltage.If detected sensor signal voltage less than alarm settings voltage, is then no longer calculated and allowed alarm voltage, further make alarm stable more and efficient.
Preferably, said method also comprises, allows maximum operating voltage if detected sensor signal voltage is higher than sensor, and then alarm sends fault-signal.Be higher than sensor in detected sensor signal voltage and allow maximum operating voltage, alarm sends fault-signal, makes the malfunction of sensor in time be detected, and has improved the stability of alarm.
Preferably, said sensor is a semiconductor transducer.Semiconductor transducer is the various physics that utilize semiconductor material, the sensor that the chemistry and biology characteristic is processed; Advantage be highly sensitive, response speed is fast, volume is little, in light weight, be convenient to integratedly, intelligent, can make that to detect conversion integrated, and shortcoming is to power on that to recover stable case undesirable; Method of the present invention has overcome the problem that powers on and recover; Utilize the advantage of semiconductor transducer, reduced system cost, increased the efficient of system.
Here the present invention is described in detail through concrete examples of implementation; Provide the description of the foregoing description to make or be suitable for the present invention in order to make those skilled in the art, the various modifications of these embodiment are to understand easily for a person skilled in the art.The present invention is not limited to these examples, or some aspect wherein.Scope of the present invention is elaborated through additional claim.
Above-mentioned explanation illustrates and has described a preferred embodiment of the present invention; But as previously mentioned; Be to be understood that the present invention is not limited to the form that this paper discloses, should do not regard eliminating as, and can be used for various other combinations, modification and environment other embodiment; And can in invention contemplated scope described herein, change through the technology or the knowledge of above-mentioned instruction or association area.And change that those skilled in the art carried out and variation do not break away from the spirit and scope of the present invention, then all should be in the protection domain of accompanying claims of the present invention.
Claims (6)
1. method that prevents the alarm false alarm, it specifically comprises following steps: timer picks up counting when sensor powers on, in certain hour scope T1, not to the signal voltage processing of reporting to the police; Behind the time threshold of arrive setting, the signal voltage of detecting sensor, and with detected sensor signal voltage with allow alarm voltage relatively, if detected sensor signal voltage is higher than the permission alarm voltage, then report to the police; If detected sensor signal voltage is lower than alarm settings voltage, then directly according to the processing of reporting to the police of alarm settings voltage; Otherwise, continue the detecting sensor signal voltage; Said permission alarm voltage reduces with the power-on time increase of sensor.
2. the method that prevents the alarm false alarm as claimed in claim 1; After it is characterized in that said method also is included in beginning detecting sensor signal voltage a period of time T2; Directly detected sensor signal voltage and alarm settings voltage are compared,, then report to the police if detected sensor signal voltage is higher than alarm settings voltage; Otherwise, continue the detecting sensor signal voltage.
3. the method that prevents the alarm false alarm as claimed in claim 2 is characterized in that said permission alarm voltage=sensor allows maximum operating voltage-(sensor allows maximum operating voltage-alarm settings voltage)/T2* (t-T1); Wherein T1 is the time period of signal voltage not being reported to the police and handling; T2 is for directly comparing the time period that ends with detected sensor signal voltage and alarm settings voltage from beginning detecting sensor signal voltage to what set, and t begins the time to current for powering on from sensor.
4. the method that prevents the alarm false alarm as claimed in claim 3 is characterized in that said method also comprises, if detected sensor signal voltage less than alarm settings voltage, does not then allow the calculating of alarm voltage.
5. the method that prevents the alarm false alarm as claimed in claim 4 is characterized in that said method also comprises, allows maximum operating voltage if detected sensor signal voltage is higher than sensor, and then alarm sends fault-signal.
6. the method that prevents the alarm false alarm as claimed in claim 5 is characterized in that said sensor is a semiconductor transducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210145365.4A CN102662103B (en) | 2012-05-11 | 2012-05-11 | Method for preventing false alarms of alarm device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210145365.4A CN102662103B (en) | 2012-05-11 | 2012-05-11 | Method for preventing false alarms of alarm device |
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| CN102662103A true CN102662103A (en) | 2012-09-12 |
| CN102662103B CN102662103B (en) | 2014-07-02 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107478276A (en) * | 2017-09-18 | 2017-12-15 | 安徽沃弗电力科技有限公司 | A kind of permanent-magnet speed governor operation monitoring system |
| CN108492539A (en) * | 2018-05-21 | 2018-09-04 | 浙江工业大学 | A kind of statistical method of safety supervision system alarm number |
| CN113975481A (en) * | 2021-10-29 | 2022-01-28 | 首都医科大学宣武医院 | Drainage monitoring system |
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| CN113975481A (en) * | 2021-10-29 | 2022-01-28 | 首都医科大学宣武医院 | Drainage monitoring system |
| CN113975481B (en) * | 2021-10-29 | 2024-05-10 | 首都医科大学宣武医院 | Drainage monitoring system |
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| CN102662103B (en) | 2014-07-02 |
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