CN106355813A - Multi-parameter composite adaptive-environment constant-temperature and rate-of-rise fixed temperature linear thermal detector - Google Patents

Multi-parameter composite adaptive-environment constant-temperature and rate-of-rise fixed temperature linear thermal detector Download PDF

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Publication number
CN106355813A
CN106355813A CN201610942441.2A CN201610942441A CN106355813A CN 106355813 A CN106355813 A CN 106355813A CN 201610942441 A CN201610942441 A CN 201610942441A CN 106355813 A CN106355813 A CN 106355813A
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temperature
microprocessor
core
group
resistance
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CN106355813B (en
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黄继洲
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Hebei Woan Electronic Technology Co.,Ltd.
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黄继洲
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    • GPHYSICS
    • G08SIGNALLING
    • G08BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00Fire alarms; Alarms responsive to explosion
    • G08B17/06Electric actuation of the alarm, e.g. using a thermally-operated switch
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01KMEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K7/00Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
    • G01K7/16Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
    • G01K7/18Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a linear resistance, e.g. platinum resistance thermometer

Abstract

The invention relates to a multi-parameter composite adaptive-environment constant-temperature and rate-of-rise fixed temperature linear thermal detector. The thermal detector comprises a thermal cable, a signal processing unit and an end resistor, wherein one end of the thermal cable is electrically connected with the end resistor, and the other end of the thermal cable is electrically connected with the signal processing unit; the signal processing unit comprises a bleeder circuit, a filter circuit, a microprocessor, an output circuit and a voltage conversion circuit; the other end of the thermal cable is electrically connected to the breeder circuit in the signal processing unit; the output end of the breeder circuit is electrically connected with the input end of the filter circuit; the output end of the filter circuit is electrically connected with the input end of the microprocessor; and the output end of the microprocessor is electrically connected with the input end of the output circuit. According to the multi-parameter composite adaptive-environment constant-temperature and rate-of-rise fixed temperature linear thermal detector, a heated length is detected by two reference circuit groups, so that the stability and interference resistance of the thermal cable can be improved.

Description

Multiparameter is combined the constant temperature of adaptive environment, different constant temperature line-type heat detector
Technical field
The present invention relates to fire detecting and alarm technical field is and in particular to a kind of multiparameter is combined certainly in safety engineering discipline Adapt to constant temperature, the different constant temperature line-type heat detector of environment.
Background technology
Fire detector is in fire automatic alarm system, and scene is detected, and finds the equipment of fire.Fire Detector is system " sensory organ ", and its effect is to monitor the generation either with or without fire in environment.Once having the condition of a fire, just By the feature physical quantity of fire, such as temperature, smog, gas and radiation light intensity etc. are converted into the signal of telecommunication, and action immediately is to fire Alarm controller sends alarm signal.
There are the test of the response performance under the conditions of variation of ambient temperature and the performance being failure to actuate of reporting to the police in temperature sensing cable GB Deng the performance test of temperature-sensitive cable under being heated length in difference, the temperature-sensitive loop of temperature sensing cable, under identical heating temperature, is heated Length is different, and the rate of change of resistance is different, the stability of impact detector, and prior art adopts ctr temperature and resistance rate saltus step material Material is it is impossible to detect to the ambient temperature below the temperature of being failure to actuate of Standard;Or adopt single reference signal, pass through The ratio in single reference loop and temperature-sensitive loop is judging temperature variations it is impossible to be accurately positioned length of being heated.
Content of the invention
In view of this, it is an object of the invention to overcoming the deficiencies in the prior art, a kind of multiparameter is provided to be combined self adaptation The constant temperature of environment, different constant temperature line-type heat detector.By detecting to length of being heated, improve the stability of temperature sensing cable And interference free performance.
For realizing object above, the present invention adopts the following technical scheme that multiparameter is combined the constant temperature of adaptive environment, difference is determined Temperature linetype temperature inductor, including temperature-sensitive cable, signal processing unit and end resistance, one end of described temperature-sensitive cable and end Resistance electrically connects, and the other end of described temperature-sensitive cable is electrically connected with described signal processing unit;Described signal processing unit includes Bleeder circuit, filter circuit, microprocessor, output circuit and voltage conversion circuit;The other end electrical connection of described temperature-sensitive cable On bleeder circuit to described signal processing unit, the outfan of described bleeder circuit is electric with the input of described filter circuit Connect, the outfan of described filter circuit electrically connects with the input of described microprocessor, the outfan of described microprocessor and The input electrical connection of described output circuit, described voltage conversion circuit is used for as described bleeder circuit, described filter circuit, institute State microprocessor and described output circuit is powered.
Further, described temperature-sensitive cable includes first group of core, second group of core and the 3rd group of core;Described end electricity Resistance includes end resistance r1, end resistance r2 and end resistance r3;
One end that described resistance r1 is serially connected in described first group of core connects composition temperature-sensitive loop;
One end that described resistance r2 is serially connected in described second group of core connects composition the first reference loop;
One end that described resistance r3 is serially connected in described 3rd group of core connects composition the second reference loop.
Further, the wall of described first group of core is using one of ptc, ntc or ctr temperature sensing material system Become;Described second group of core is made using the conductor with temperature and resistance rate variation characteristic;Described 3rd group of core is using tool The conductor having temperature and resistance rate variation characteristic is made.
Further, wherein the first reference loop is formed by first group of core and end resistance r2 and by the 3rd group of core and The temperature-coefficient of electrical resistance that end resistance r3 forms the second reference loop is different.
Further, first group of core and end resistance r1 composition temperature-sensitive loop output signal v1;Second group of core and end End resistance r2 forms the first reference loop output signal v2;3rd group of core and the second reference loop output of end resistance r3 composition Signal v3, described signal processing unit passes through bleeder circuit and filter circuit to v1, and v2, v3 carry out signal arrangement, and arrangement Good signal passes to microprocessor.
Preferably, prestore in microprocessor difference be heated length v2, v3 value, microprocessor pass through contrast v2, v3 and The corresponding relation of v2, v3 in microprocessor, to judge length l of being heated of temperature-sensitive cable, and the value v1 and be stored in microprocessor The corresponding alarm threshold value of length l of being heated in device compares, and to judge whether to send constant temperature fire alarm by output circuit;Work as v1 Value be more than or equal to when being stored in microprocessor the corresponding alarm threshold value of length l of being heated, microprocessor is sent out by output circuit Go out constant temperature fire alarm;When the value of v1 is less than and is stored in microprocessor the corresponding alarm threshold value of length l of being heated, system is again The value of detection v1, v2, v3 is simultaneously contrasted.
Further, in the t1 moment, first group of core and end resistance r1 composition temperature-sensitive loop output signal v11, second Group core and end resistance r2 form the first reference loop output signal v21, the 3rd group of core and end resistance r31 composition second Reference loop output signal v31;
In the t2 moment, first group of core and end resistance r1 form temperature-sensitive loop output signal v12, second group of core and end End resistance r2 forms the first reference loop output signal v22, and the 3rd group of core and end resistance r3 composition the second reference loop are defeated Go out signal v32;
Described signal processing unit passes through bleeder circuit and filter circuit to v11, and v21, v31, v12, v22, v32 carry out letter Number arrange, and the signal put in order is passed to microprocessor.
Further, microprocessor passes through the v21 collecting, and difference is heated in the microprocessor for the value of v31 and storage The value of v21, v31 of length compares, and to judge length of being heated, and and is stored in microprocessor v11 according to length of being heated The corresponding temperature value of length l1 of being heated compares the temperature value t1 to determine now;
Microprocessor passes through the v22 collecting, the value of v32 and storage in the microprocessor difference be heated length v22, The value of v32 compares, and to judge length of being heated, and v12 and is stored in microprocessor length l2 of being heated according to length of being heated Corresponding temperature value compares the temperature value t2 to determine now;
Microprocessor passes through to calculate (t2-t1)/(t2-t1) to judge rate of temperature change a, and microprocessor passes through handle and calculates The rate of temperature change a the coming and rate of temperature change a being stored in microprocessor compares, as the rate of temperature change a calculating During more than or equal to the rate of temperature change a being stored in microprocessor, microprocessor sends differential temperature alarm signal by output circuit, When the rate of temperature change a calculating is less than the rate of temperature change a being stored in microprocessor, microprocessor signals are examined again Survey v11, the value of v21, v31, v12, v22, v32 simultaneously carries out calculating contrast.
Preferably, described first reference loop, described second reference loop and described temperature-sensitive loop three public one general Admittance body or a public conductor having temperature and resistance rate variation characteristic.
Preferably, the public normal conductor in described first reference loop and described second reference loop or public one There is the conductor of temperature and resistance rate variation characteristic.
The present invention adopts above technical scheme, and one end of described temperature-sensitive cable is electrically connected with end resistance, described temp.-sensing wire The other end of cable is electrically connected with described signal processing unit;Described resistance r1 is serially connected in one end connection group of described first group of core Become temperature-sensitive loop;One end that described resistance r2 is serially connected in described second group of core connects composition the first reference loop;Described resistance One end that r3 is serially connected in described 3rd group of core connects composition the second reference loop.The present invention passes through two groups of reference loops to being heated Length is detected, and improves stability and the interference free performance of temperature sensing cable.On the other hand pass through to arrange multiple reference loop, The microprocessor difference that prestores is heated the reference loopback value of length, to be accurately positioned length of being heated, and by being come instead with length of being heated The method pushing away heating temperature, improves the precision and stability of detector.
Brief description
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing Have technology description in required use accompanying drawing be briefly described it should be apparent that, drawings in the following description be only this Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, acceptable Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is one of heat detector structural representation of the present invention;
Fig. 2 is the two of heat detector structural representation of the present invention;
Fig. 3 is the three of heat detector structural representation of the present invention.
Specific embodiment
For making the object, technical solutions and advantages of the present invention clearer, technical scheme will be carried out below Detailed description.Obviously, described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Base Embodiment in the present invention, those of ordinary skill in the art's obtained owning on the premise of not making creative work Other embodiment, broadly falls into the scope that the present invention is protected.
As shown in figure 1, the present invention provides, a kind of multiparameter is combined the constant temperature of adaptive environment, different constant temperature line type temperature-sensitive detects Device, including temperature-sensitive cable, signal processing unit and end resistance, one end of described temperature-sensitive cable is electrically connected with end resistance, institute The other end stating temperature-sensitive cable is electrically connected with described signal processing unit;Described signal processing unit includes bleeder circuit, filtering Circuit, microprocessor, output circuit and voltage conversion circuit;The other end of described temperature-sensitive cable is electrically connected to described signal processing On bleeder circuit in unit, the outfan of described bleeder circuit is electrically connected with the input of described filter circuit, described filtering The outfan of circuit is electrically connected with the input of described microprocessor, the outfan of described microprocessor and described output circuit Input electrically connects, and described voltage conversion circuit is used for as described bleeder circuit, described filter circuit, described microprocessor and institute State output circuit to power.
As shown in figure 1, described temperature-sensitive cable outermost wraps up insulating protective layer 7, described temperature-sensitive cable includes first group of line Core, second group of core and the 3rd group of core;Described end resistance includes end resistance r1, end resistance r2 and end resistance r3;
One end that described resistance r1 is serially connected in described first group of core connects composition temperature-sensitive loop;
One end that described resistance r2 is serially connected in described second group of core connects composition the first reference loop;
One end that described resistance r3 is serially connected in described 3rd group of core connects composition the second reference loop.
As one kind preferred embodiment, the wall of described first group of core is using ptc, ntc or ctr temperature-sensitive material One of material is made;Described second group of core is made using the conductor with temperature and resistance rate variation characteristic;Described 3rd Group core is made using the conductor with temperature and resistance rate variation characteristic.Wherein it is made up of first group of core and end resistance r2 First reference loop is different with the temperature-coefficient of electrical resistance that end resistance r3 forms the second reference loop with by the 3rd group of core.
Operation principle of the present invention is as follows: temperature-coefficient of electrical resistance (abbreviation tcr) represents resistance when temperature changes 1 degree, resistance The relative change of value;At a certain temperature t2, the average resistance relative to room temperature t1 for the conductor that length of being heated is l, sectional area is s Rt2=rt1[1+tcr* (t2-t1)], t2 temperature lower conductor is relative to the increased resistance value tb=rt2-rt1=rt1* of room temperature t1 Tcr* (t2-t1)=ρ l/s*tcr* (t2-t1), ρ are resistivity under room temperature t1 it can be seen that under t2, length of being heated is l, cuts Area be s conductor be directly proportional relative to size tcr of room temperature t1 increased resistance value that is to say, that to have temperature and resistance rate change The conductor of characteristic is directly proportional to the induction sensitivity of length of being heated and temperature-coefficient of electrical resistance, and the present invention passes through the different resistance temperature of setting Two groups of reference loops of degree coefficient, to perceive the length of being heated of temperature-sensitive cable, and are set according to the difference temperature-sensitive loop under length that is heated The degree of accuracy to improve temperature-sensitive cable for the fixed different alarming threshold value is it is also possible on the basis of this structure, increasing several groups of references and return Road makes range finding more accurate.
As shown in figure 1, constant temperature operation principle of the present invention: it is heated in the case of environmental abnormality, first group of core 1,2 and end End resistance r1 composition temperature-sensitive loop output signal v1;Second group of core 3,4 and the first reference loop output of end resistance r2 composition Signal v2;3rd group of core 5,6 and end resistance r3 form the second reference loop output signal v3, and described signal processing unit leads to Cross bleeder circuit and filter circuit to v1, v2, v3 carry out signal arrangement, and the signal put in order is passed to microprocessor.
Need it is further noted that prestoring at a certain temperature in microprocessor, v2, v3's of different length of being heated Value, microprocessor passes through to contrast v2, the corresponding relation of v2, v3 in v3 and microprocessor, to judge the length of being heated of temperature-sensitive cable L, and the value v1 and be stored in microprocessor the corresponding alarm threshold value of length l of being heated and compare, to judge whether by defeated Go out circuit and send constant temperature fire alarm.It is stored in microprocessor the corresponding warning level of length l of being heated when the value of v1 is more than or equal to During value, microprocessor sends constant temperature fire alarm by output circuit;It is stored in microprocessor length of being heated when the value of v1 is less than During the degree corresponding alarm threshold value of l, system again detects the value of v1, v2, v3 and is contrasted;The voltage conversion of signal processing unit Circuit is converted into bleeder circuit, filter circuit, microprocessor, the power supply of output circuit 24v DC source;
As shown in figure 1, differential temperature operation principle of the present invention: it is heated in the case of environmental abnormality, in a certain t1 moment, first Group core 1,2 and end resistance r1 composition temperature-sensitive loop output signal v11, second group of core 3,4 and end resistance r2 composition the One reference loop output signal v21, the 3rd group of core 5,6 and end resistance r31 form the second reference loop output signal v31;
In another t2 moment, first group of core 1,2 and end resistance r1 composition temperature-sensitive loop output signal v12, second group Core 3,4 and end resistance r2 form the first reference loop output signal v22, the 3rd group of core 5,6 and end resistance r3 composition Second reference loop output signal v32;
Described signal processing unit passes through bleeder circuit and filter circuit to v11, and v21, v31, v12, v22, v32 carry out letter Number arrange, and the signal put in order is passed to microprocessor.
Microprocessor passes through the v21 collecting, under the value of v31 and storage uniform temperature in the microprocessor, different The value of v21, v31 of length of being heated compares, and to judge length of being heated, and v11 and is stored in microprocessor according to length of being heated The corresponding temperature value of length l1 of being heated in device compares the temperature value t1 to determine now;
Microprocessor passes through the v22 collecting, under the value of v32 and storage uniform temperature in the microprocessor, different The value of v22, v32 of length of being heated compares, and to judge length of being heated, and v12 and is stored in microprocessor according to length of being heated The corresponding temperature value of length l2 of being heated in device compares the temperature value t2 to determine now;
Microprocessor passes through to calculate (t2-t1)/(t2-t1) to judge rate of temperature change a, and microprocessor passes through handle and calculates The rate of temperature change a the coming and rate of temperature change a being stored in microprocessor compares, as the rate of temperature change a calculating During more than or equal to the rate of temperature change a being stored in microprocessor, microprocessor sends differential temperature alarm signal by output circuit, When the rate of temperature change a calculating is less than the rate of temperature change a being stored in microprocessor, microprocessor signals are examined again Survey v11, the value of v21, v31, v12, v22, v32 simultaneously carries out calculating contrast;
The voltage conversion circuit of signal processing unit is converted into bleeder circuit, filter circuit, microprocessor 24v DC source Device, the power supply of output circuit;
It should be added that, in the present invention, reference loop and temperature-sensitive loop have Multiple Combination mode to be not limited in figure 1 and the compound mode of following Fig. 2 and Fig. 3.
As shown in Fig. 2 as one kind preferred embodiment, described first reference loop, described second reference loop and The described public normal conductor of temperature-sensitive loop three or a public conductor having temperature and resistance rate variation characteristic.
As shown in figure 3, the public normal conductor in described first reference loop and described second reference loop or public A piece conductor having temperature and resistance rate variation characteristic.
One end of described temperature-sensitive cable is electrically connected by the present invention with end resistance, the other end of described temperature-sensitive cable with described Signal processing unit electrically connects;One end that described resistance r1 is serially connected in described first group of core connects composition temperature-sensitive loop;Described One end that resistance r2 is serially connected in described second group of core connects composition the first reference loop;Described resistance r3 is serially connected in the described 3rd One end of group core connects composition the second reference loop.The present invention is detected to length of being heated by two groups of reference loops, carries The high stability of temperature sensing cable and interference free performance.
Above-described specific embodiment, has been carried out to the purpose of the present invention, technical scheme and beneficial effect further Describe in detail, be should be understood that the specific embodiment that the foregoing is only the present invention, be not intended to limit the present invention Protection domain, all any modification, equivalent substitution and improvement within the spirit and principles in the present invention, done etc., all should comprise Within protection scope of the present invention.

Claims (10)

1. multiparameter be combined the constant temperature of adaptive environment, different constant temperature line-type heat detector it is characterised in that: include temp.-sensing wire Cable, signal processing unit and end resistance, one end of described temperature-sensitive cable is electrically connected with end resistance, described temperature-sensitive cable another One end is electrically connected with described signal processing unit;
Described signal processing unit includes bleeder circuit, filter circuit, microprocessor, output circuit and voltage conversion circuit;Institute The other end stating temperature-sensitive cable is electrically connected on the bleeder circuit in described signal processing unit, the outfan of described bleeder circuit Electrically connect with the input of described filter circuit, the outfan of described filter circuit is electrically connected with the input of described microprocessor Connect, the outfan of described microprocessor is electrically connected with the input of described output circuit, described voltage conversion circuit is used for as institute State bleeder circuit, described filter circuit, described microprocessor and described output circuit to power.
2. multiparameter according to claim 1 is combined the constant temperature of adaptive environment, different constant temperature line-type heat detector, and it is special Levy and be: described temperature-sensitive cable includes first group of core, second group of core and the 3rd group of core;Described end resistance includes end Resistance r1, end resistance r2 and end resistance r3;
One end that described resistance r1 is serially connected in described first group of core connects composition temperature-sensitive loop;
One end that described resistance r2 is serially connected in described second group of core connects composition the first reference loop;
One end that described resistance r3 is serially connected in described 3rd group of core connects composition the second reference loop.
3. multiparameter according to claim 2 is combined the constant temperature of adaptive environment, different constant temperature line-type heat detector, and it is special Levy and be: the wall of described first group of core is to be made using one of ptc, ntc or ctr temperature sensing material;Described second Group core is made using the conductor with temperature and resistance rate variation characteristic;Described 3rd group of core is using having temperature and resistance The conductor of rate variation characteristic is made.
4. multiparameter according to claim 3 is combined the constant temperature of adaptive environment, different constant temperature line-type heat detector, and it is special Levy and be: wherein the first reference loop is formed and by the 3rd group of core and end resistance r3 by first group of core and end resistance r2 The temperature-coefficient of electrical resistance forming the second reference loop is different.
5. the multiparameter according to any one of claim 2 to 4 is combined the constant temperature of adaptive environment, different constant temperature line type temperature-sensitive is visited Survey device it is characterised in that: first group of core and end resistance r1 composition temperature-sensitive loop output signal v1;Second group of core and end Resistance r2 forms the first reference loop output signal v2;3rd group of core and end resistance r3 composition the second reference loop output letter Number v3, described signal processing unit passes through bleeder circuit and filter circuit to v1, and v2, v3 carry out signal arrangement, and putting in order Signal pass to microprocessor.
6. multiparameter according to claim 5 is combined the constant temperature of adaptive environment, different constant temperature line-type heat detector, and it is special Levy and be: the value of v2, v3 of the different length of being heated that prestore in microprocessor, microprocessor passes through to contrast v2, v3 and microprocessor The corresponding relation of middle v2, v3, to judge length l of being heated of temperature-sensitive cable, and the value v1 is heated with being stored in microprocessor The corresponding alarm threshold value of length l compares, and to judge whether to send constant temperature fire alarm by output circuit;When the value of v1 is more than Equal to when being stored in microprocessor the corresponding alarm threshold value of length l of being heated, microprocessor sends constant temperature fire by output circuit Alert signal;When v1 value be less than be stored in microprocessor length l of being heated corresponding alarm threshold value when, system again detect v1, The value of v2, v3 is simultaneously contrasted.
7. the multiparameter according to any one of claim 2 to 4 is combined the constant temperature of adaptive environment, different constant temperature line type temperature-sensitive is visited Survey device it is characterised in that: in the t1 moment, first group of core and end resistance r1 composition temperature-sensitive loop output signal v11, second group Core and end resistance r2 form the first reference loop output signal v21, the 3rd group of core and end resistance r31 composition second ginseng Ratio loop output signal v31;
In the t2 moment, first group of core and end resistance r1 form temperature-sensitive loop output signal v12, second group of core and end electricity Resistance r2 forms the first reference loop output signal v22, the 3rd group of core and end resistance r3 composition the second reference loop output letter Number v32;
Described signal processing unit passes through bleeder circuit and filter circuit to v11, and it is whole that v21, v31, v12, v22, v32 carry out signal Reason, and the signal put in order is passed to microprocessor.
8. multiparameter according to claim 7 is combined the constant temperature of adaptive environment, different constant temperature line-type heat detector, and it is special Levy and be: microprocessor passes through the v21 collecting, the value of v31 and storage in the microprocessor difference be heated length v21, The value of v31 compares, and to judge length of being heated, and v11 and is stored in microprocessor length l1 of being heated according to length of being heated Corresponding temperature value compares the temperature value t1 to determine now;
Microprocessor passes through the v22 collecting, the value of v32 and v22, v32 of storing different length of being heated in the microprocessor Value compare, to judge length of being heated, and according to length of being heated, v12 is corresponding with being stored in microprocessor length l2 of being heated Temperature value compare the temperature value t2 to determine now;
Microprocessor passes through to calculate (t2-t1)/(t2-t1) judging rate of temperature change a, and microprocessor passes through calculating The rate of temperature change a and rate of temperature change a being stored in microprocessor compares, when the rate of temperature change a calculating is more than When being equal to the rate of temperature change a being stored in microprocessor, microprocessor sends differential temperature alarm signal by output circuit, works as meter When the rate of temperature change a calculating is less than the rate of temperature change a being stored in microprocessor, microprocessor signals detect again The value of v11, v21, v31, v12, v22, v32 simultaneously carries out calculating contrast.
9. the multiparameter according to claim 1 or 2 or 3 or 4 or 6 or 8 is combined the constant temperature of adaptive environment, different constant temperature line style Heat detector it is characterised in that: described first reference loop, described second reference loop and described temperature-sensitive loop three are public A piece normal conductor or a public conductor having temperature and resistance rate variation characteristic.
10. the multiparameter according to claim 1 or 2 or 3 or 4 or 6 or 8 is combined the constant temperature of adaptive environment, different constant temperature line Type heat detector it is characterised in that: the public normal conductor in described first reference loop and described second reference loop or The public conductor having temperature and resistance rate variation characteristic of person.
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Publication number Priority date Publication date Assignee Title
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CN201262774Y (en) * 2008-05-15 2009-06-24 张陈 Linetype heat detector for multi-loop sectional monitoring temperature-sensing electrical signal
CN104198076A (en) * 2014-08-26 2014-12-10 安徽蓝德仪表有限公司 Multifunctional linear temperature sensor
CN204406593U (en) * 2015-01-20 2015-06-17 江苏中实电子有限公司 A kind of composite linear temperature-sensing fire disaster detector
CN206331545U (en) * 2016-11-01 2017-07-14 黄继洲 Multi-parameter is combined the constant temperature of adaptive environment, different constant temperature line-type heat detector

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101368850A (en) * 2007-08-16 2009-02-18 侯荣琴 Multi-temperature impedance characteristic sensing cable and temperature-sensitive detector using the same
CN201262774Y (en) * 2008-05-15 2009-06-24 张陈 Linetype heat detector for multi-loop sectional monitoring temperature-sensing electrical signal
CN104198076A (en) * 2014-08-26 2014-12-10 安徽蓝德仪表有限公司 Multifunctional linear temperature sensor
CN204406593U (en) * 2015-01-20 2015-06-17 江苏中实电子有限公司 A kind of composite linear temperature-sensing fire disaster detector
CN206331545U (en) * 2016-11-01 2017-07-14 黄继洲 Multi-parameter is combined the constant temperature of adaptive environment, different constant temperature line-type heat detector

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