CN206331545U - Multi-parameter is combined the constant temperature of adaptive environment, different constant temperature line-type heat detector - Google Patents
Multi-parameter is combined the constant temperature of adaptive environment, different constant temperature line-type heat detector Download PDFInfo
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- CN206331545U CN206331545U CN201621166706.6U CN201621166706U CN206331545U CN 206331545 U CN206331545 U CN 206331545U CN 201621166706 U CN201621166706 U CN 201621166706U CN 206331545 U CN206331545 U CN 206331545U
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- temperature
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- constant temperature
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Abstract
The utility model is related to multi-parameter and is combined the constant temperature of adaptive environment, different constant temperature line-type heat detector, including temperature-sensitive cable, signal processing unit and end resistance, one end of the temperature-sensitive cable is electrically connected with end resistance, and the other end of the temperature-sensitive cable is electrically connected with the signal processing unit；The signal processing unit includes bleeder circuit, filter circuit, microprocessor, output circuit and voltage conversion circuit；The other end of the temperature-sensitive cable is electrically connected on the bleeder circuit in the signal processing unit, the output end of the bleeder circuit is electrically connected with the input of the filter circuit, the output end of the filter circuit is electrically connected with the input of the microprocessor, and the output end of the microprocessor is electrically connected with the input of the output circuit.The utility model is detected by two groups of reference loops to heated length, improves the stability and interference free performance of temperature sensing cable.
Description
Technical field
The utility model is related to fire detecting and alarm technical field in safety engineering discipline, and in particular to a kind of multi-parameter is answered
Close constant temperature, the different constant temperature line-type heat detector of adaptive environment.
Background technology
During fire detector is fire automatic alarm system, scene is detected, the equipment of discovery fire.Fire
Detector is system " sense organ ", and its effect is to monitor the generation in environment either with or without fire.Once there is the condition of a fire, just
By the feature physical quantity of fire, such as temperature, smog, gas and radiation light intensity are converted into electric signal, and act immediately to fire
Alarm controller sends alarm signal.
There is the response performance under the conditions of variation of ambient temperature to test and alarm the performance being failure to actuate in temperature sensing cable GB
Deng the performance test of the temperature-sensitive cable under different heated length, the temperature-sensitive loop of temperature sensing cable is heated under identical heating temperature
Length is different, and the rate of change of resistance is different, influences the stability of detector, and prior art uses CTR temperature and resistance rate saltus step materials
Material, it is impossible to detected to the environment temperature below the temperature of being failure to actuate of Standard；Or single reference signal is used, pass through
The ratio in single reference loop and temperature-sensitive loop judges temperature variations, it is impossible to be accurately positioned heated length.
Utility model content
In view of this, the purpose of this utility model is to overcome the deficiencies in the prior art compound certainly there is provided a kind of multi-parameter
Adapt to constant temperature, the different constant temperature line-type heat detector of environment.By being detected to heated length, the steady of temperature sensing cable is improved
Qualitative and interference free performance.
To realize object above, the utility model is adopted the following technical scheme that：The constant temperature of the compound adaptive environment of multi-parameter,
Different constant temperature line-type heat detector, including temperature-sensitive cable, signal processing unit and end resistance, one end of the temperature-sensitive cable with
End resistance is electrically connected, and the other end of the temperature-sensitive cable is electrically connected with the signal processing unit；The signal processing unit
Including bleeder circuit, filter circuit, microprocessor, output circuit and voltage conversion circuit；The other end electricity of the temperature-sensitive cable
It is connected on the bleeder circuit in the signal processing unit, the output end of the bleeder circuit and the input of the filter circuit
End electrical connection, the output end of the filter circuit is electrically connected with the input of the microprocessor, the output of the microprocessor
End is electrically connected with the input of the output circuit, and the voltage conversion circuit is used to be the bleeder circuit, the filtered electrical
Road, the microprocessor and the output circuit are powered.
Further, the temperature-sensitive cable includes first group of core, second group of core and the 3rd group of core；The end electricity
Resistance includes end resistance R1, end resistance R2 and end resistance R3；
The resistance R1 is serially connected in one end connection composition temperature-sensitive loop of first group of core；
The resistance R2 is serially connected in one end the first reference loop of connection composition of second group of core；
The resistance R3 is serially connected in one end the second reference loop of connection composition of the 3rd group of core.
Further, the wall of first group of core is using a kind of system in PTC, NTC or CTR temperature sensing material
Into；Second group of core uses the conductor with temperature-change in resistance characteristic to be made；The 3rd group of core is using tool
The conductor for having temperature-change in resistance characteristic is made.
Further, wherein the first reference loop is constituted 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 constitutes the second reference loop is different.
Further, first group of core and end resistance R1 composition temperature-sensitive loop output signals V1；Second group of core and end
Resistance R2 is held to constitute the first reference loop output signal V2；3rd group of core and end resistance R3 constitute the output of the second reference loop
Signal V3, the signal processing unit carries out signal arrangement by bleeder circuit and filter circuit to V1, V2, V3, and arrangement
Good signal is transmitted to microprocessor.
It is preferred that, V2, V3 of the different heated length that prestored in microprocessor value, microprocessor by contrasting V2, V3 and
V2, V3 corresponding relation in microprocessor, to judge the heated length L of temperature-sensitive cable, and value V1 and are stored in microprocessor
The corresponding alarm threshold values of length L that are heated in device compare, 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 values of the length L of being heated, microprocessor is sent out by output circuit
Go out constant temperature fire alarm；When V1 value, which is less than, is stored in microprocessor the corresponding alarm threshold values of the length L of being heated, system is again
Detect V1, V2, V3 value and contrasted.
Further, at the T1 moment, first group of core and end resistance R1 compositions temperature-sensitive loop output signal V11, second
Group core and end resistance R2 constitute the first reference loop output signal V21, the 3rd group of core and end resistance R31 compositions second
Reference loop output signal V31；
At the T2 moment, first group of core and end resistance R1 composition temperature-sensitive loop output signal V12, second group of core and end
Resistance R2 is held to constitute the first reference loop output signal V22, it is defeated that the 3rd group of core and end resistance R3 constitute the second reference loop
Go out signal V32；
The signal processing unit is believed V11, V21, V31, V12, V22, V32 by bleeder circuit and filter circuit
Number arrange, and the signal put in order is transmitted to microprocessor.
Further, microprocessor is by being in the microprocessor Bu Tong heated the V21 collected, V31 value with storage
V21, V31 of length value compare, to judge heated length, and according to heated length is V11 and is stored in microprocessor
The corresponding temperature values of length of being heated L1 compare to determine temperature value T1 now；
Microprocessor by the V22 collected, V32 value and storage in the microprocessor Bu Tong the V22 of heated length,
V32 value compares, to judge heated length, and according to heated length is V12 and is stored in microprocessor the length L2 that is heated
Corresponding temperature value compares to determine temperature value T2 now；
Microprocessor judges rate of temperature change A by calculating (T2-T1)/(t2-t1), and microprocessor is calculated by handle
The rate of temperature change A come and the rate of temperature change A being stored in microprocessor compare, as the rate of temperature change A calculated
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 calculated is less than the rate of temperature change A being stored in microprocessor, microprocessor signals are examined again
V11, V21, V31, V12, V22 are surveyed, V32 value simultaneously carries out calculating contrast.
It is preferred that, the first reference loop, the second reference loop and public one of the temperature-sensitive loop three are general
Admittance body or it is public one have temperature-change in resistance characteristic conductor.
It is preferred that, the first reference loop and the second reference loop public normal conductor or public one
There is the conductor of temperature-change in resistance characteristic.
The utility model uses above technical scheme, and one end of the temperature-sensitive cable is electrically connected with end resistance, the sense
The other end of warm cable is electrically connected with the signal processing unit；One end that the resistance R1 is serially connected in first group of core connects
Connect composition temperature-sensitive loop；The resistance R2 is serially connected in one end the first reference loop of connection composition of second group of core；It is described
Resistance R3 is serially connected in one end the second reference loop of connection composition of the 3rd group of core.The utility model is returned by two groups of references
Road is detected to heated length, improves the stability and interference free performance of temperature sensing cable.On the other hand it is multiple by setting
Reference loop, microprocessor prestores the reference loopback values of different heated length, to be accurately positioned heated length, and by using heated
Length carrys out the anti-method for pushing away heating temperature, improves the precision and stability of detector.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the accompanying drawing to be used needed for description of the prior art is briefly described, it should be apparent that, drawings in the following description are only
It is some embodiments of the present utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is one of the utility model heat detector structural representation；
Fig. 2 is the two of the utility model heat detector structural representation；
Fig. 3 is the three of the utility model heat detector structural representation.
Embodiment
, below will be to technology of the present utility model to make the purpose of this utility model, technical scheme and advantage clearer
Scheme is described in detail.Obviously, described embodiment is only a part of embodiment of the utility model, rather than all
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not before creative work is made
Resulting all other embodiment is put, the scope that the utility model is protected is belonged to.
As shown in figure 1, the utility model, which provides a kind of multi-parameter, is combined the constant temperature of adaptive environment, different constant temperature line type temperature-sensitive
Detector, including temperature-sensitive cable, signal processing unit and end resistance, one end of the temperature-sensitive cable are electrically connected with end resistance
Connect, the other end of the temperature-sensitive cable is electrically connected with the signal processing unit；The signal processing unit include bleeder circuit,
Filter circuit, microprocessor, output circuit and voltage conversion circuit；The other end of the temperature-sensitive cable is electrically connected to the signal
On bleeder circuit in processing unit, the output end of the bleeder circuit is electrically connected with the input of the filter circuit, described
The output end of filter circuit is electrically connected with the input of the microprocessor, the output end of the microprocessor and the output electricity
The input electrical connection on road, the voltage conversion circuit is used to be the bleeder circuit, the filter circuit, the microprocessor
Powered with the output circuit.
As shown in figure 1, the temperature-sensitive cable outermost parcel insulating protective layer 7, the temperature-sensitive cable includes first group of line
Core, second group of core and the 3rd group of core；The end resistance includes end resistance R1, end resistance R2 and end resistance R3；
The resistance R1 is serially connected in one end connection composition temperature-sensitive loop of first group of core；
The resistance R2 is serially connected in one end the first reference loop of connection composition of second group of core；
The resistance R3 is serially connected in one end the second reference loop of connection composition of the 3rd group of core.
As one kind preferred embodiment, the wall of first group of core is to use PTC, NTC or CTR temperature-sensitive material
One kind in material is made；Second group of core uses the conductor with temperature-change in resistance characteristic to be made；Described 3rd
Group core uses the conductor with temperature-change in resistance characteristic to be made.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 constitutes the second reference loop with by the 3rd group of core.
Utility model works principle is as follows：Temperature-coefficient of electrical resistance (abbreviation TCR) represents resistance when temperature changes 1 degree,
The relative change of resistance value；Under a certain temperature T2, heated length is average electricity of the conductor with respect to room temperature T1 that L, sectional area are S
Hinder RT2=RT1【1+TCR*(T2-T1)】, increased resistance value TB=RT2-RT1=RT1* of the T2 temperature lower conductor with respect to room temperature T1
TCR*(T2-T1)
=ρ L/S*TCR* (T2-T1), ρ are the resistivity under room temperature T1, it can be seen that under T2, and length of being heated is L, section
Product is directly proportional for S conductor with respect to the size TCR of room temperature T1 increased resistance values, that is to say, that special to there is temperature-change in resistance
Property conductor to be heated length induction sensitivity and temperature-coefficient of electrical resistance be directly proportional, the utility model is by setting different resistance
Two groups of reference loops of temperature coefficient, to perceive the heated length of temperature-sensitive cable, and according to temperature-sensitive loop under the heated length of difference
Set different alarming threshold values to improve the accuracy of temperature-sensitive cable, several groups of references can also be increased on the basis of this structure
Loop makes ranging more accurate.
As shown in figure 1, the utility model constant temperature operation principle：It is heated in the case of environmental abnormality, first group of core 1,2
With end resistance R1 composition temperature-sensitive loop output signals V1；Second group of core 3,4 and end resistance R2 constitute the first reference loop
Output signal V2；3rd group of core 5,6 and end resistance R3 constitute the second reference loop output signal V3, the signal transacting list
Member is by bleeder circuit and filter circuit to V1, and V2, V3 carries out signal arrangement, and the signal put in order is transmitted to microprocessor.
It should be further stated that, prestored in microprocessor at a certain temperature, V2, V3's of the heated length of difference
Value, microprocessor is by contrasting V2, V2, V3 corresponding relation in V3 and microprocessor, to judge the heated length of temperature-sensitive cable
L, and value V1 alarm threshold value corresponding with the length L that is heated is stored in microprocessor compares, to judge whether by defeated
Go out circuit and send constant temperature fire alarm.The corresponding warning levels of length L that are heated are stored in microprocessor when V1 value is more than or equal to
During value, microprocessor sends constant temperature fire alarm by output circuit；Length of being heated is stored in microprocessor when V1 value is less than
When spending the corresponding alarm threshold values of L, system detects V1, V2, V3 value and contrasted again；The voltage conversion of signal processing unit
24V dc sources are converted into bleeder circuit, filter circuit, microprocessor, the power supply of output circuit by circuit；
As shown in figure 1, the utility model differential temperature operation principle：It is heated in the case of environmental abnormality, at a certain T1 moment,
First group of core 1,2 and end resistance R1 composition temperature-sensitive loop output signal V11, second group of core 3,4 and end resistance R2 groups
Into the first reference loop output signal V21, the 3rd group of core 5,6 and end resistance R31 constitute the second reference loop output signal
V31；
At another T2 moment, first group of core 1,2 and end resistance R1 compositions temperature-sensitive loop output signal V12, second group
Core 3,4 and end resistance R2 constitute the first reference loop output signal V22, the 3rd group of core 5,6 and end resistance R3 compositions
Second reference loop output signal V32；
The signal processing unit is believed V11, V21, V31, V12, V22, V32 by bleeder circuit and filter circuit
Number arrange, and the signal put in order is transmitted to microprocessor.
Microprocessor is different under the uniform temperature of V31 value and storage in the microprocessor by the V21 collected
V21, V31 of heated length value compare, to judge heated length, and according to heated length is V11 and is stored in microprocessor
The corresponding temperature values of length L1 that are heated in device compare to determine temperature value T1 now；
Microprocessor is different under the uniform temperature of V32 value and storage in the microprocessor by the V22 collected
V22, V32 of heated length value compare, to judge heated length, and according to heated length is V12 and is stored in microprocessor
The corresponding temperature values of length L2 that are heated in device compare to determine temperature value T2 now；
Microprocessor judges rate of temperature change A by calculating (T2-T1)/(t2-t1), and microprocessor is calculated by handle
The rate of temperature change A come and the rate of temperature change A being stored in microprocessor compare, as the rate of temperature change A calculated
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 calculated is less than the rate of temperature change A being stored in microprocessor, microprocessor signals are examined again
V11, V21, V31, V12, V22 are surveyed, V32 value simultaneously carries out calculating contrast；
24V dc sources are converted into bleeder circuit, filter circuit, microprocessor by the voltage conversion circuit of signal processing unit
Device, the power supply of output circuit；
It should be added that, there is Multiple Combination mode in reference loop and temperature-sensitive loop and not only limited in the utility model
In Fig. 1 and following Fig. 2 and Fig. 3 combination.
As shown in Fig. 2 as it is a kind of preferred embodiment, the first reference loop, the second reference loop and
The public normal conductor of temperature-sensitive loop three or it is public one have temperature-change in resistance characteristic conductor.
As shown in figure 3, the public normal conductor or public in the first reference loop and the second reference loop
One have temperature-change in resistance characteristic conductor.
The utility model electrically connects one end of the temperature-sensitive cable with end resistance, the other end of the temperature-sensitive cable with
The signal processing unit electrical connection；The resistance R1 is serially connected in one end connection composition temperature-sensitive loop of first group of core；
The resistance R2 is serially connected in one end the first reference loop of connection composition of second group of core；The resistance R3 is serially connected in described
One end the second reference loop of connection composition of 3rd group of core.The utility model is carried out by two groups of reference loops to heated length
Detection, improves the stability and interference free performance of temperature sensing cable.
Above-described embodiment, is entered to the purpose of this utility model, technical scheme and beneficial effect
One step is described in detail, be should be understood that and be the foregoing is only embodiment of the present utility model, is not used to limit
Fixed protection domain of the present utility model, all any modifications within spirit of the present utility model and principle, made, is equally replaced
Change, improve, should be included within protection domain of the present utility model.
Claims (7)
1. multi-parameter is combined the constant temperature of adaptive environment, different constant temperature line-type heat detector, it is characterised in that：Including temp.-sensing wire
Cable, signal processing unit and end resistance, one end of the temperature-sensitive cable are electrically connected with end resistance, the temperature-sensitive cable it is another
One end is electrically connected with the signal processing unit；
The signal processing unit includes bleeder circuit, filter circuit, microprocessor, output circuit and voltage conversion circuit；Institute
The other end for stating temperature-sensitive cable is electrically connected on the bleeder circuit in the signal processing unit, the output end of the bleeder circuit
Electrically connected with the input of the filter circuit, the output end of the filter circuit and the input of the microprocessor are electrically connected
Connect, the output end of the microprocessor is electrically connected with the input of the output circuit, the voltage conversion circuit is used for for institute
Bleeder circuit, the filter circuit, the microprocessor and the output circuit is stated to power.
2. multi-parameter according to claim 1 is combined the constant temperature of adaptive environment, different constant temperature line-type heat detector, it is special
Levy and be：The temperature-sensitive cable includes first group of core, second group of core and the 3rd group of core；The end resistance includes end
Resistance R1, end resistance R2 and end resistance R3；
The resistance R1 is serially connected in one end connection composition temperature-sensitive loop of first group of core；
The resistance R2 is serially connected in one end the first reference loop of connection composition of second group of core；
The resistance R3 is serially connected in one end the second reference loop of connection composition of the 3rd group of core.
3. multi-parameter according to claim 2 is combined the constant temperature of adaptive environment, different constant temperature line-type heat detector, it is special
Levy and be：The wall of first group of core is made by using one kind in PTC, NTC or CTR temperature sensing material；Described second
Group core uses the conductor with temperature-change in resistance characteristic to be made；The 3rd group of core, which is used, has temperature-resistance
The conductor of rate variation characteristic is made.
4. multi-parameter according to claim 3 is combined the constant temperature of adaptive environment, different constant temperature line-type heat detector, it is special
Levy and be：The first reference loop is wherein constituted 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 for constituting the second reference loop is different.
5. the multi-parameter according to any one of claim 2 to 4 is combined the constant temperature of adaptive environment, different constant temperature line type temperature-sensitive and visited
Survey device, it is characterised in that：First group of core and end resistance R1 composition temperature-sensitive loop output signals V1；Second group of core and end
Resistance R2 constitutes the first reference loop output signal V2；3rd group of core and end resistance R3 constitute the second reference loop output letter
Number V3, the signal processing unit is by bleeder circuit and filter circuit to V1, and V2, V3 carries out signal arrangement, and putting in order
Signal be transmitted to microprocessor.
6. the multi-parameter according to any one of claim 2 to 4 is combined the constant temperature of adaptive environment, different constant temperature line type temperature-sensitive and visited
Survey device, it is characterised in that：The first reference loop, the second reference loop and public one of the temperature-sensitive loop three are general
Admittance body or it is public one have temperature-change in resistance characteristic conductor.
7. the multi-parameter according to any one of claim 2 to 4 is combined the constant temperature of adaptive environment, different constant temperature line type temperature-sensitive and visited
Survey device, it is characterised in that：The public normal conductor in the first reference loop and the second reference loop or public one
Root has the conductor of temperature-change in resistance characteristic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621166706.6U CN206331545U (en) | 2016-11-01 | 2016-11-01 | Multi-parameter is combined the constant temperature of adaptive environment, different constant temperature line-type heat detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621166706.6U CN206331545U (en) | 2016-11-01 | 2016-11-01 | Multi-parameter is combined the constant temperature of adaptive environment, different constant temperature line-type heat detector |
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| Publication Number | Publication Date |
|---|---|
| CN206331545U true CN206331545U (en) | 2017-07-14 |
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ID=59286377
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621166706.6U Expired - Fee Related CN206331545U (en) | 2016-11-01 | 2016-11-01 | Multi-parameter is combined the constant temperature of adaptive environment, different constant temperature line-type heat detector |
Country Status (1)
| Country | Link |
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| CN (1) | CN206331545U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106355813A (en) * | 2016-11-01 | 2017-01-25 | 黄继洲 | Multi-parameter composite adaptive-environment constant-temperature and rate-of-rise fixed temperature linear thermal detector |
-
2016
- 2016-11-01 CN CN201621166706.6U patent/CN206331545U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106355813A (en) * | 2016-11-01 | 2017-01-25 | 黄继洲 | Multi-parameter composite adaptive-environment constant-temperature and rate-of-rise fixed temperature linear thermal detector |
| CN106355813B (en) * | 2016-11-01 | 2018-11-23 | 黄继洲 | The fixed temperature of the compound adaptive environment of multi-parameter, different constant temperature line-type heat detector |
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| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
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| CF01 | Termination of patent right due to non-payment of annual fee |