CN205788616U - Line-type heat detector - Google Patents
Line-type heat detector Download PDFInfo
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- CN205788616U CN205788616U CN201620597701.2U CN201620597701U CN205788616U CN 205788616 U CN205788616 U CN 205788616U CN 201620597701 U CN201620597701 U CN 201620597701U CN 205788616 U CN205788616 U CN 205788616U
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Abstract
This utility model provides a kind of line-type heat detector, including signal processing unit, also includes the sensing unit being connected with signal processing unit；Described sensing unit includes one or more levels probe unit；Each class survey unit is corresponding to an address section of field monitoring；First order probe unit is connected with signal processing unit, from the beginning of the probe unit of the second level, and cascade successively；Signal processing unit is for powering to probe unit and sending order, and the monitoring information at least including temperature data information that this probe unit is obtained by probe unit is sent to signal processing unit.This utility model has low cost, and investigative range is wide, possesses zoning monitoring function, it is possible to realize contactless temperature-measuring, it is to avoid contact installs the electromagnetic interference brought；There is stronger anti-electromagnetic interference capability and incipient fire responding ability.
Description
Technical field
This utility model relates to a kind of fire detector, the multiple combined type line style in a kind of safety engineering discipline
Heat fire detector.
Background technology
Line-type heat detector ripe in the industrial circles such as electric power, metallurgy, petrochemical industry is applied mainly to have 3 at present
Kind: on-off value linear constant temperature fire detector, analog linetype temperature-fixing fire detecting device and analog linear different constant temperature fire are visited
Survey device.These 3 kinds of detectors all use temperature sensing material to be processed into cable, the structure of outer cladding sheath, and detection mechanism is usually impedance
Change principle, i.e. detector use the cable material with distinct temperature coefficient to make, when the environment temperature of detector protection zone
When degree changes, the impedance of cable changes the most accordingly, and testing circuit is according to the impedance variation of cable, it is judged that scene is
No have fire to occur.Although some line-type heat detectors by the quantity increasing internal temperature-sensitive cable realize two-parameter or
Measuring multiple parameters, but its structure and detection mechanism do not have the change of essence.
Line-type heat detector, in current engineer applied, is primarily present following problem: one is by structure and spy
Surveying the restriction of mechanism, the radius of protection of a detector is limited, so limiting the protection domain of detector, adding engineering and setting
Standby cost, reduces engineer applied cost performance.Two is owing to application places is mostly strong electromagnetic place, line-type heat
Detector sensitivity easily by electromagnetic interference, in order to prevent false alarm, is turned down by detector, although part place is mounted with simulation
Amount line style different constant temperature fire detector, the simpliest shields differential temperature function, only retains constant temperature warning function, cause detection
Device cannot realize early fire detection, delays optimal warning and fire fighting and rescue opportunity.Three are to ensure that line-type heat
The Effect on Detecting of detector, it is achieved the early detection of fire is reported to the police, project installation uses the mounting means that contact is laid, we
Formula is readily incorporated electromagnetic interference, is also unfavorable for engineering maintenance and maintenance.Four be currently used line-type heat detector not
Possess monitored area temperature and warning position display function, therefore limit use length and the application places of detector.
Due to the existence of the problems referred to above, greatly limit the range of application of line-type heat detector, have impact on detection
The fire of device responding ability in early days.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, it is provided that a kind of linear temperature-sensing fire detecting
Device, has low cost, and investigative range is wide, possesses zoning monitoring function, it is possible to realize contactless temperature-measuring, it is to avoid contact is installed
The electromagnetic interference brought；There is stronger anti-electromagnetic interference capability and incipient fire responding ability；The skill that this utility model uses
Art scheme is:
A kind of line-type heat detector, including signal processing unit, also include being connected with signal processing unit is quick
Sense parts；Described sensing unit includes one or more levels probe unit；Each class survey unit is corresponding to the one of field monitoring
Individual address section；First order probe unit is connected with signal processing unit, from the beginning of the probe unit of the second level, and cascade successively；Letter
Number processing unit is for powering to probe unit and sending order, and what this probe unit was obtained by probe unit at least includes temperature
The monitoring information of data message is sent to signal processing unit.
Further, described signal processing unit is provided with terminal resistance R；
Described probe unit includes sensing cable and the TU Trunk Unit with temperature-sensitive ability；
Sensing cable includes two power supplys and signal multiplexing cable and two temperature-sensitive cables；Temperature-sensitive cable and power supply and signal
Multiplexing cable is separately provided, or at least power supply and signal multiplexing cable multiplexing temperature-sensitive cable；
A terminal resistance R is included equally in TU Trunk Unit；
TU Trunk Unit includes front terminal row X and rear terminal row Y, and level shifting circuit, signal decoding circuit, response control
Circuit processed, cable signal sample circuit, filter circuit, amplifying circuit, microcontroller circuit, at least one detect sensor；Micro-
Controller circuitry includes microcontroller and address encoding unit, has TU Trunk Unit in this class survey unit in address encoding unit
Unique address；Address in address encoding unit is corresponding with the address section of field monitoring；
The front end of two temperature-sensitive cables in first order probe unit connects the terminal resistance R two in signal processing unit
End, the rear end of two temperature-sensitive cables connects the cable signal sample circuit of this grade；From the beginning of the probe unit of the second level, the spy of this grade
The front end surveying two temperature-sensitive cables in unit connects terminal resistance R two ends in upper level probe unit, two temperature-sensitive cables
Rear end connects the cable signal sample circuit of this grade；The analog temperature signal of cable signal sample circuit collection passes through filter circuit
Transmit to microcontroller with after amplifying circuit；
In TU Trunk Unit front terminal row X in the first terminal, the second terminal respectively with rear terminal row Y in the first terminal,
Second terminal short circuit；
Two power supplys in first order probe unit are connected signal processing unit with the front end of signal multiplexing cable, and rear end is divided
Do not connect the front terminal row the first terminal of X, the second terminal in the TU Trunk Unit of this grade；From the beginning of the probe unit of the second level, this grade
Two power supplys in probe unit are connected rear terminal row Y in the TU Trunk Unit of upper level respectively with the front end of signal multiplexing cable
The first terminal, the second terminal, rear end connects the front terminal row the first terminal of X, the second terminal in the TU Trunk Unit of this grade respectively；
The signal sent from signal processing unit, sends TU Trunk Unit to, by front by power supply and signal multiplexing cable
The first terminal in terminal block X, the second terminal export after being connected to level shifting circuit to signal decoding circuit, signal decoding electricity
Road outputs signal to microcontroller input, and the response message of microcontroller arranges X by the output of response control circuit to front terminal
The first terminal, be transferred to two power supplys and signal multiplexing cable after the second terminal, be back to signal processing unit, it is achieved relaying
Unit and the bidirectional data transfers of signal processing unit；
Detection sensor in TU Trunk Unit at least includes a temperature sensor, and temperature sensor connects microcontroller.
The utility model has the advantage of:
1, the TU Trunk Unit that this utility model relates to, its built-in infrared temperature sensor and/or semiconductor temperature sensor,
It is integrated on the sensing unit of line-type heat detector, matches with temperature-sensitive cable, it is achieved that two kinds of mechanism are complete
Different temperature detection modes, had both remained the characteristic of the continuous temperature-sensitive of line type fire detector, adds infrared temperature simultaneously and passes
Sensor and/or semiconductor temperature sensor, it is possible to realize remote non-contact measurement, make line-type heat detector
Work in higher grade of sensitivity, be greatly improved the incipient fire responding ability of line-type heat detector and report to the police accurately
Property.
2, the line-type heat detector that this utility model relates to can use contactless mounting means, Ke Yiyou
Effect avoids electromagnetic interference, expands the protection domain of detector while reducing rate of false alarm, and the engineering that improve detector is fitted
By property, comparing with existing fire detector, engineering equipment cost can reduce by more than 50%.
3, the line-type heat detector that this utility model relates to can realize subregion positioning function, therefore can accurately determine
Incipient fire position, position so that monitoring personnel timely and effective can take treatment measures；
4, cascade installs the use length that improve detector, can expand products application place；And cascade is installed and is made
Obtain site operation more convenient, the total length after cascade can be determined according to customer demand；
5, carry out data transmission in real time between TU Trunk Unit and signal processing unit, real-time, flexible configuration, stability
Good, the requirement of Different field can be met, applied widely.
Accompanying drawing explanation
Fig. 1 is the structure composition schematic diagram of quad of the present utility model.
Fig. 2 is the sensing cable schematic diagram of quadrature arrangement of the present utility model.
Fig. 3 is the sensing cable schematic diagram of three-core structure of the present utility model.
Fig. 4 is the sensing cable schematic diagram of two-chip structure of the present utility model.
Fig. 5 is the structural representation of TU Trunk Unit of the present utility model.
Fig. 6 is a kind of integrated form schematic diagram of sensing unit of the present utility model.
Fig. 7 is the structure composition schematic diagram of three heart yearns of the present utility model.
Fig. 8 is the structure composition schematic diagram of two heart yearns of the present utility model.
Fig. 9 is that sensing cable of the present utility model passes through pluggable terminals connection diagram with TU Trunk Unit.
Figure 10 is signal processing unit routine inspection mode flow chart of the present utility model.
Figure 11 is TU Trunk Unit software flow pattern of the present utility model.
Detailed description of the invention
Below in conjunction with concrete drawings and Examples, the utility model is described in further detail.
The deficiency existed for current line-type heat detector, can use the sense at line-type heat detector
Several TU Trunk Units integrated on temperature cable, form a kind of low cost and have stronger anti-electromagnetic interference capability and early stage fire
The Multivariate combined-type linear temperature-sensing fire detector of calamity responding ability solves more existing problems.
As it is shown in figure 1, the line-type heat detector that this utility model provides, including signal processing unit and signal
The sensing unit that processing unit connects；In Fig. 1, signal processing unit right-hand side assembly is sensing unit ingredient；
Sensing unit is generally formed by multistage probe unit cascade；In the case of the shortest, sensing unit can also only have one
Class survey unit is constituted, but the most less appearance；Each class survey unit is corresponding to an address of field monitoring
Interval；First order probe unit is connected with signal processing unit, from the beginning of the probe unit of the second level, and cascade successively；Signal processing
Unit is for powering to probe unit and sending order, and what this probe unit was obtained by probe unit at least includes that temperature data is believed
The monitoring information of breath is sent to signal processing unit.
Probe unit includes sensing cable 1 and the TU Trunk Unit 2 with temperature-sensitive ability；At monitoring field, every a spacing
From arranging a TU Trunk Unit 2, spaced apart can be 0.5～200m；Connected by sensing cable 1 between TU Trunk Unit 2
Getting up, the TU Trunk Unit 2 of first order probe unit is connected with signal processing unit by sensing cable 1；At most can reach
2048 TU Trunk Units, say, that at most allow 2048 probe unit cascades；
Sensing cable 1 includes two power supplys and signal multiplexing cable 101 and two temperature-sensitive cables 102；
Sensing cable 1 can use quadrature arrangement, as in figure 2 it is shown, include the first heart yearn 1a, the second heart yearn 1b, the 3rd heart yearn
1c and quad 1d；Quad is conductor；First heart yearn 1a and the second heart yearn 1b appearance parcel insulant, as two
Power supply and signal multiplexing cable 101；3rd heart yearn 1c and quad 1d appearance parcel NTC negative temperature coefficient material 1e, and the
The NTC negative temperature coefficient material of three heart yearn 1c and quad 1d appearance connects continuously or is connected as a single entity, the 3rd heart yearn 1c and
There is interval between quad 1d, constitute two temperature-sensitive cables 102；The most when the temperature is changed, the 3rd heart yearn 1c and the 4th core
NTC material resistance between line 1d line raises with temperature and declines, and forms the temperature-sensitive cable with sense of continuity temperature function；Outside quad
Add waterproof insulation set 3；Quad can be arranged in parallel as shown in Figure 2 or be twisted into lay configuration；
Sensing cable 1 may be used without three-core structure, as it is shown on figure 3, include the first heart yearn 1a, the second heart yearn 1b, the 3rd core
Line 1c；Three heart yearns are conductor, and the first heart yearn 1a appearance parcel insulant, as a power supply and signal multiplexing cable 101；
Second heart yearn 1b and the 3rd heart yearn 1c appearance parcel NTC negative temperature coefficient material 1e, the second heart yearn 1b and the 3rd heart yearn 1c appearance
NTC negative temperature coefficient material connect continuously or be connected as a single entity, between the second heart yearn 1b and the 3rd heart yearn 1c exist interval, constitute two
Root temperature-sensitive cable 102；Appearance parcel NTC negative temperature coefficient material the second heart yearn 1b concurrent multiplexing, as another root power supply with
Signal multiplexing cable 101 is used；Three heart yearns can be arranged in parallel as shown in Figure 3 or be twisted into lay configuration；
Sensing cable 1 may be used without two-chip structure, as shown in Figure 4, including the first heart yearn 1a, the second heart yearn 1b；Two heart yearns
It is conductor；First heart yearn 1a and the second heart yearn 1b appearance parcel NTC negative temperature coefficient material 1e, and the first heart yearn 1a and second
The NTC negative temperature coefficient material of heart yearn 1b appearance connects continuously or is connected as a single entity, and deposits between the first heart yearn 1a and the second heart yearn 1b
At interval, constitute two temperature-sensitive cables 102；Two power supplys and signal multiplexing cable 101 and the multiplexing of two temperature-sensitive cables 102；Two
Heart yearn can be arranged in parallel as shown in Figure 4 or be twisted into lay configuration；
In first order probe unit, the terminal resistance R of temperature-sensitive cable 102 is arranged on signal processing unit.Each TU Trunk Unit
Include a terminal resistance R on 2 equally, connect for the temperature-sensitive cable 102 in rear stage probe unit；
As it is shown in figure 5, TU Trunk Unit 2 includes front terminal row X and rear terminal row Y, and the decoding of level shifting circuit, signal
Circuit, response control circuit, cable signal sample circuit, filter circuit, amplifying circuit, microcontroller circuit and respectively detect
Sensor；Microcontroller circuit includes microcontroller and address encoding unit, has this class survey unit in address encoding unit
The unique address of middle TU Trunk Unit 2；Address in address encoding unit is corresponding with the address section of field monitoring；Front terminal is arranged
There are on X four terminals, terminal 1, terminal 2, terminal 3, terminal 4 be respectively front terminal row's the first terminal of X, the second terminal, the
Three terminals, the 4th terminal；Also having four terminals, terminal a, terminal b, terminal c, terminal d on rear terminal row Y is rear terminal row respectively
The first terminal of Y, the second terminal, the 3rd terminal, the 4th terminal；Detection sensor in TU Trunk Unit 2 includes that infrared temperature passes
Sensor, semiconductor temperature sensor, Smoke Sensor, harmful gas sensor (such as firedamp sensor), flame sensor etc.；
Owing to Fig. 5 scope of charting is limited, only depict infrared temperature sensor, semiconductor temperature sensor；Front end in TU Trunk Unit
Son row's terminal 1 of X, terminal 2 and rear terminal row the terminal a of Y, terminal b short circuit respectively；Terminal resistance R two ends in TU Trunk Unit
Connect rear terminal row the 3rd terminal of Y, the 4th terminal；The input of level shifting circuit connect front terminal row X the first terminal,
Second terminal；The input of cable signal sample circuit connects front terminal row the 3rd terminal of X, the 4th terminal；
When sensing cable 1 uses quadrature arrangement, as it is shown in figure 1, TU Trunk Unit 2 and signal processing unit connected mode are said
Bright:
In first order probe unit, the front end of the first heart yearn 1a and the second heart yearn 1b of sensing cable 1 connects signal processing
Unit, rear end is connected respectively on front terminal the row the first terminal of X, second terminal of the TU Trunk Unit of this grade；Sensing cable 1
The front end of the 3rd heart yearn 1c and quad 1d connects the two ends of resistance R on signal processing unit, and rear end is connected respectively to this level
Front terminal row the 3rd terminal of X, the 4th terminal of TU Trunk Unit, thus connect cable signal sample circuit；
From the beginning of the probe unit of the second level, this class survey unit senses the first heart yearn 1a and the second heart yearn 1b of cable 1
Front end connect respectively upper level TU Trunk Unit rear terminal row the first terminal of Y, the second terminal, the first heart yearn 1a and second
The rear end of heart yearn 1b connects TU Trunk Unit front terminal the row the first terminal of X, second terminal of this grade respectively；The of sensing cable 1
The front end of three heart yearn 1c and quad 1d connect respectively the TU Trunk Unit of upper level rear terminal row the 3rd terminal of Y, the 4th
Terminal, the rear end of the 3rd heart yearn 1c and quad 1d connect respectively the 3rd terminal of TU Trunk Unit front terminal row X of this grade, the
Four terminals；
When sensing cable 1 uses three-core structure, as it is shown in fig. 7, TU Trunk Unit 2 and signal processing unit connected mode are said
Bright:
In first order probe unit, the front end of the first heart yearn 1a and the second heart yearn 1b of sensing cable 1 connects signal processing
Unit, rear end is connected respectively on front terminal the row the first terminal of X, second terminal of the TU Trunk Unit of this grade；Sensing cable 1
The front end of the second heart yearn 1b and the 3rd heart yearn 1c connects the two ends of resistance R on signal processing unit, and rear end is connected respectively to this level
TU Trunk Unit front terminal row second terminal of X, the 3rd terminal；
From the beginning of the probe unit of the second level, this class survey unit senses the first heart yearn 1a and the second heart yearn 1b of cable 1
Front end connect respectively upper level TU Trunk Unit rear terminal row the first terminal of Y, the second terminal, the first heart yearn 1a and second
The rear end of heart yearn 1b connects TU Trunk Unit front terminal the row the first terminal of X, second terminal of this grade respectively；The of sensing cable 1
The front end of three heart yearn 1c connects the 3rd terminal of the rear terminal row Y of the TU Trunk Unit of upper level, and the rear end of the 3rd heart yearn 1c connects
3rd terminal of the TU Trunk Unit front terminal row X of this grade；
In each TU Trunk Unit, front terminal row the second of X, the 4th terminal short circuit；Rear terminal row the second of Y, the 4th terminal short
Connect；
When sensing cable 1 uses two-chip structure, as shown in Figure 8, TU Trunk Unit 2 and signal processing unit connected mode are said
Bright:
In first order probe unit, the front end of the first heart yearn 1a and the second heart yearn 1b of sensing cable 1 connects signal processing
Unit and and signal processing unit on resistance R two ends connect；The rear end of the first heart yearn 1a and the second heart yearn 1b connects respectively
Front terminal the row the first terminal of X, the second terminal to the TU Trunk Unit of this grade；
From the beginning of the probe unit of the second level, this class survey unit senses the first heart yearn 1a and the second heart yearn 1b of cable 1
Front end connect respectively upper level TU Trunk Unit rear terminal row the first terminal of Y, the second terminal, the first heart yearn 1a and second
The rear end of heart yearn 1b connects TU Trunk Unit front terminal the row the first terminal of X, second terminal of this grade respectively；
In each TU Trunk Unit, front terminal row the first of X, the 3rd terminal short circuit, the second, the 4th terminal short circuit；Rear terminal row Y
The first, the 3rd terminal short circuit, the second, the 4th terminal short circuit；
The signal sent from signal processing unit, sends TU Trunk Unit to by power supply and signal multiplexing cable 101, passes through
The first terminal, the second terminal in the front terminal row X of every one-level TU Trunk Unit export to signal after being connected to level shifting circuit
Decoding circuit, signal decoding circuit outputs signal to microcontroller input, and the response message of microcontroller is controlled by response
Circuit output is transferred to two power supplys and signal multiplexing cable 101, passback to front terminal the row the first terminal of X, the second terminal
To signal processing unit, it is achieved TU Trunk Unit 2 and the bidirectional data transfers of signal processing unit；Infrared temperature sensor, partly lead
The output of the detection sensor such as temperature sensor, Smoke Sensor, harmful gas sensor connects microcontroller, microcontroller
By software control, it is achieved the signals collecting to various detection sensing datas, and signal processing unit can be returned to；
Terminal resistance R is conducive to detecting the variations in temperature of an on-the-spot section, under room temperature, two heart yearns of temperature-sensitive cable 102
Between the resistance of NTC material very big, be unfavorable for constituting loop；After connecting terminal resistance R, cable signal sampling circuit samples
Initial resistance be substantially equal to R, along with temperature rise, between heart yearn, NTC material resistance diminishes, and is equivalent to terminal resistance R two ends also
The resistance of connection diminishes, then the resistance at temperature-sensitive cable two ends diminishes, and cable signal sample circuit is by sampling temperature-sensitive cable two ends
Resistance, is changed into corresponding voltage signal it, and after filtering, become the voltage model that microcontroller can be sampled after amplifying circuit
Enclosing, microcontroller, by sampling this voltage signal carry out correlation analysis and algorithm process, is extrapolated the change of resistance, thus is pushed away
Calculate the value of information of temperature；
Sensing cable 1 by being welded to connect, or can be connected by pluggable terminals with TU Trunk Unit 2, as it is shown in figure 9,
Public plug 4 and mother socket 5 is set respectively on the such as termination of sensing cable 1 and the terminal block of TU Trunk Unit 2, when connecting, as long as
Pluggable terminals is coupled together the most permissible；
When sensing cable 1 is welded to connect with TU Trunk Unit 2, sensing unit has two kinds of integrated forms；The first is, such as Fig. 7
Or as depicted in figure 8, TU Trunk Unit 2 adds shell in order to protect, and to needing the detection sensor corresponding site on shell exposed to open
Window so that such as infrared temperature sensor exposes；Sensing cable 1 outer layer adds waterproof insulation set 3；The second is, such as Fig. 6 institute
Show, after the heart yearn of sensing cable 1 welds with the terminal block terminal of TU Trunk Unit 2, on all sensing cables 1 and TU Trunk Unit 2
The unified waterproof insulation that adds overlaps 3, processes stranding together, and makes to need the detection sensor exposed to expose at cable uplifting window；
When sensing cable 1 is connected by pluggable terminals with TU Trunk Unit 2, the common integrated form of sensing unit is, relaying
Unit 2 adds shell in order to protect, and the detection sensor corresponding site windowing on shell exposing needs；Sensing cable 1
Outer layer adds waterproof insulation set 3；The advantage of pluggable terminals integration mode is, facilitates TU Trunk Unit later period maintenance and replacement, flexibly
Property high, disadvantageously, its tensile property does not use welding procedure integration mode good.In actual applications, can be according to reality
Situation carries out choosing of technique and structure；
Signal processing unit and TU Trunk Unit 2 carry out the double of data by the first heart yearn and second heart yearn of sensing cable 1
To transmitting and communicating, signal processing unit is powered to TU Trunk Unit 2 by the first heart yearn and the second heart yearn and is sent order；
For i-th section of probe unit, TU Trunk Unit i obtains the temperature-sensitive cable i signal with variation of ambient temperature, processes
After information is returned to signal processing unit by the first heart yearn and the second heart yearn, signal processing unit returns according to TU Trunk Unit i
The presence states information passed, sends out corresponding status information, including operation, fault, fire alarm shape after carrying out a series of process
State information.
Temperature-sensitive cable i has the function at monitored section (i.e. an address section of field monitoring) temperature-sensitive continuously, and
TU Trunk Unit 2 has the non-contact high-sensitivity temperature sensing function in TU Trunk Unit 2 position；TU Trunk Unit can use infrared
Temperature sensor and/or semiconductor temperature sensor realize non-contact temperature measuring, compensate for temperature-sensitive cable and contact must be used to apply
If the deficiency of mounting means；Other Smoke Sensor, harmful gas sensor etc. also can be set in TU Trunk Unit, it is achieved on-the-spot
The monitoring of multiple ambient condition；
For sensing unit of the present utility model, the probe unit of cascade can realize subregion position monitor, monitoring section
Between temperature and display alarm position, cascade be also beneficial to improve fire detector length；
Signal processing unit routine inspection mode communication process illustrates, as shown in Figure 10: arrange only in advance each TU Trunk Unit i
The address of one, is designated as add_i, i≤2048, in each polling period, numbers ascending order according to TU Trunk Unit and depend on
Secondary patrol and examine；Signal processing unit sending mode position and address bit add_i, mode bit represents concrete order of patrolling and examining, relaying
Unit receives mode bit and address bit add_i information, and after the address bit matches of self, corresponding TU Trunk Unit i is by this
The monitoring information including temperature data information that the unit that continues obtains is sent back to as response message, and signal processing unit receives
The response message of TU Trunk Unit i loopback, and be correspondingly processed, then carrying out patrolling and examining of next TU Trunk Unit, it was patrolled and examined
Journey is ibid；After all of TU Trunk Unit has been patrolled and examined by signal processing unit successively, a polling period terminates, and enters next
Individual polling period, the process of each polling period is ibid.
TU Trunk Unit software flow illustrate, as shown in figure 11: the microcontroller of TU Trunk Unit the most in a dormant state, when
Signal processing unit sends and is waken up when patrolling and examining order, starts to receive mode bit and address bit, when the address bit received and basis
After machine address add_i coupling, by the monitoring information including temperature data information of acquisition back to signal processing unit, microcontroller
Device starts to gather new temperature data, prepares for data communication next time, reenter resting state afterwards after process.Due to
The time-sharing work of microcontroller and dormancy working method, make the power consumption of TU Trunk Unit effectively reduce, substantially increase signal processing
The load capacity of unit, on the premise of guaranteeing fire alarm response real-time, the quantity of TU Trunk Unit is up to 2048.
Claims (9)
1. a line-type heat detector, including signal processing unit, it is characterised in that: also include and signal processing unit
The sensing unit connected；
Described sensing unit includes one or more levels probe unit；Each class survey unit is corresponding to a ground of field monitoring
Location is interval；First order probe unit is connected with signal processing unit, from the beginning of the probe unit of the second level, and cascade successively；
Signal processing unit is used for powering to probe unit and sending order, at least bag that this probe unit is obtained by probe unit
The monitoring information including temperature data information is sent to signal processing unit.
2. line-type heat detector as claimed in claim 1, it is characterised in that:
Described signal processing unit is provided with terminal resistance R；
Described probe unit includes sensing cable (1) and the TU Trunk Unit (2) with temperature-sensitive ability；
Sensing cable (1) includes two power supplys and signal multiplexing cable (101) and two temperature-sensitive cables (102)；Temperature-sensitive cable
(102) it is separately provided with signal multiplexing cable (101) with power supply, or at least power supply and signal multiplexing cable (101) multiplexing
Temperature-sensitive cable (102)；
A terminal resistance R is included equally in TU Trunk Unit (2)；
TU Trunk Unit (2) includes front terminal row X and rear terminal row Y, and level shifting circuit, signal decoding circuit, response control
Circuit processed, cable signal sample circuit, filter circuit, amplifying circuit, microcontroller circuit, at least one detect sensor；Micro-
Controller circuitry includes microcontroller and address encoding unit, has TU Trunk Unit in this class survey unit in address encoding unit
(2) unique address；Address in address encoding unit is corresponding with the address section of field monitoring；
The front end of two temperature-sensitive cables (102) in first order probe unit connects the terminal resistance R two in signal processing unit
End, the rear end of two temperature-sensitive cables (102) connects the cable signal sample circuit of this grade；From the beginning of the probe unit of the second level, this
Terminal resistance R two ends in the front end connection upper level probe unit of two temperature-sensitive cables (102) in the probe unit of level, two
The rear end of temperature-sensitive cable (102) connects the cable signal sample circuit of this grade；The analog temperature that cable signal sample circuit gathers
Signal is by transmitting to microcontroller after filter circuit and amplifying circuit；
In TU Trunk Unit front terminal row X in the first terminal, the second terminal respectively with rear terminal row Y in the first terminal, second
Terminal short circuit；
Two power supplys in first order probe unit are connected signal processing unit, rear end with the front end of signal multiplexing cable (101)
Connect the front terminal row the first terminal of X, the second terminal in the TU Trunk Unit (2) of this grade respectively；From the beginning of the probe unit of the second level, this
Two power supplys in the probe unit of level are connected the TU Trunk Unit (2) of upper level respectively with the front end of signal multiplexing cable (101)
Middle rear terminal the row the first terminal of Y, the second terminal, rear end connects first end of front terminal row X in the TU Trunk Unit (2) of this grade respectively
Son, the second terminal；
The signal sent from signal processing unit, sends TU Trunk Unit to, by front by power supply and signal multiplexing cable (101)
The first terminal in terminal block X, the second terminal export after being connected to level shifting circuit to signal decoding circuit, signal decoding electricity
Road outputs signal to microcontroller input, and the response message of microcontroller arranges X by the output of response control circuit to front terminal
The first terminal, be transferred to two power supplys and signal multiplexing cable (101) after the second terminal, be back to signal processing unit, real
Existing TU Trunk Unit (2) and the bidirectional data transfers of signal processing unit；
Detection sensor in TU Trunk Unit (2) at least includes a temperature sensor, and temperature sensor connects microcontroller.
3. line-type heat detector as claimed in claim 2, it is characterised in that:
Sensing cable (1) uses quadrature arrangement, including the first heart yearn (1a), the second heart yearn (1b), the 3rd heart yearn (1c) and the 4th
Heart yearn (1d)；Quad is conductor；First heart yearn (1a) and the second heart yearn (1b) appearance parcel insulant, as two electricity
Source and signal multiplexing cable (101)；3rd heart yearn (1c) and quad (1d) appearance parcel NTC negative temperature coefficient material
(1e), and the NTC negative temperature coefficient material of the 3rd heart yearn (1c) and quad (1d) appearance connects continuously or is connected as a single entity, the
There is interval between three heart yearns (1c) and quad (1d), constitute two temperature-sensitive cables (102)；
Terminal resistance R two ends in TU Trunk Unit connect rear terminal row the 3rd terminal of Y, the 4th terminal；Level shifting circuit
Input connects front terminal the row the first terminal of X, the second terminal；The input of cable signal sample circuit connects front terminal row X
The 3rd terminal, the 4th terminal；
In first order probe unit, first heart yearn (1a) of sensing cable (1) and the front end of the second heart yearn (1b) connect at signal
Reason unit, rear end is connected respectively on front terminal the row the first terminal of X, second terminal of the TU Trunk Unit of this grade；Sensing cable
(1) the 3rd heart yearn (1c) and the front end of quad (1d) connect the two ends of resistance R on signal processing unit, and rear end connects respectively
Receive front terminal row the 3rd terminal of X, the 4th terminal of the TU Trunk Unit of this grade, thus connect cable signal sample circuit；
From the beginning of the probe unit of the second level, this class survey unit senses the first heart yearn (1a) and second heart yearn of cable (1)
(1b) front end connects rear terminal the row the first terminal of Y, second terminal of the TU Trunk Unit of upper level, the first heart yearn (1a) respectively
With TU Trunk Unit front terminal the row the first terminal of X, the second terminal that the rear end of the second heart yearn (1b) connects this grade respectively；Sensing line
3rd heart yearn (1c) of cable (1) and the front end of quad (1d) connect the rear terminal row Y's of the TU Trunk Unit of upper level respectively
3rd terminal, the 4th terminal, the rear end of the 3rd heart yearn (1c) and quad (1d) connects the TU Trunk Unit front end of this grade respectively
Son row the 3rd terminal of X, the 4th terminal.
4. line-type heat detector as claimed in claim 2, it is characterised in that:
Sensing cable (1) uses three-core structure, including the first heart yearn (1a), the second heart yearn (1b), the 3rd heart yearn (1c)；Three heart yearns
Being conductor, the first heart yearn (1a) appearance parcel insulant, as a power supply and signal multiplexing cable (101)；Second core
Line (1b) and the 3rd heart yearn (1c) appearance parcel NTC negative temperature coefficient material (1e), the second heart yearn (1b) and the 3rd heart yearn (1c)
The NTC negative temperature coefficient material of appearance connects continuously or is connected as a single entity, between existing between the second heart yearn (1b) and the 3rd heart yearn (1c)
Every, constitute two temperature-sensitive cables (102)；Second heart yearn (1b) concurrent multiplexing of appearance parcel NTC negative temperature coefficient material, as
Another root power supply and signal multiplexing cable (101)；
Terminal resistance R two ends in TU Trunk Unit connect rear terminal row the 3rd terminal of Y, the 4th terminal；Level shifting circuit
Input connects front terminal the row the first terminal of X, the second terminal；The input of cable signal sample circuit connects front terminal row X
The 3rd terminal, the 4th terminal；
In first order probe unit, first heart yearn (1a) of sensing cable (1) and the front end of the second heart yearn (1b) connect at signal
Reason unit, rear end is connected respectively on front terminal the row the first terminal of X, second terminal of the TU Trunk Unit of this grade；Sensing cable
(1) the second heart yearn (1b) and the front end of the 3rd heart yearn (1c) connect the two ends of resistance R on signal processing unit, and rear end connects respectively
Receive front terminal row second terminal of X, the 3rd terminal of the TU Trunk Unit of this grade；
From the beginning of the probe unit of the second level, this class survey unit senses the first heart yearn (1a) and second heart yearn of cable (1)
(1b) front end connects rear terminal the row the first terminal of Y, second terminal of the TU Trunk Unit of upper level, the first heart yearn (1a) respectively
With TU Trunk Unit front terminal the row the first terminal of X, the second terminal that the rear end of the second heart yearn (1b) connects this grade respectively；Sensing line
The front end of the 3rd heart yearn (1c) of cable (1) connects the 3rd terminal of the rear terminal row Y of the TU Trunk Unit of upper level, the 3rd heart yearn
(1c) rear end connects the 3rd terminal of the TU Trunk Unit front terminal row X of this grade；
In each TU Trunk Unit, front terminal row the second of X, the 4th terminal short circuit；Rear terminal row the second of Y, the 4th terminal short circuit.
5. line-type heat detector as claimed in claim 2, it is characterised in that:
Sensing cable (1) uses two-chip structure, including the first heart yearn (1a), the second heart yearn (1b)；Two heart yearns are conductor；First
Heart yearn (1a) and the second heart yearn (1b) appearance parcel NTC negative temperature coefficient material (1e), and the first heart yearn (1a) and the second heart yearn
(1b) the NTC negative temperature coefficient material of appearance connects continuously or is connected as a single entity, between the first heart yearn (1a) and the second heart yearn (1b)
There is interval, constitute two temperature-sensitive cables (102)；Two power supplys and signal multiplexing cable (101) and two temperature-sensitive cables (102)
Multiplexing；
Terminal resistance R two ends in TU Trunk Unit connect rear terminal row the 3rd terminal of Y, the 4th terminal；Level shifting circuit
Input connects front terminal the row the first terminal of X, the second terminal；The input of cable signal sample circuit connects front terminal row X
The 3rd terminal, the 4th terminal；
In first order probe unit, first heart yearn (1a) of sensing cable (1) and the front end of the second heart yearn (1b) connect at signal
Manage unit and connect with the two ends of resistance R on signal processing unit；The rear end of the first heart yearn (1a) and the second heart yearn (1b) is divided
It is not connected to front terminal the row the first terminal of X, second terminal of the TU Trunk Unit of this grade；
From the beginning of the probe unit of the second level, this class survey unit senses the first heart yearn (1a) and second heart yearn of cable (1)
(1b) front end connects rear terminal the row the first terminal of Y, second terminal of the TU Trunk Unit of upper level, the first heart yearn (1a) respectively
With TU Trunk Unit front terminal the row the first terminal of X, the second terminal that the rear end of the second heart yearn (1b) connects this grade respectively；
In each TU Trunk Unit, front terminal row the first of X, the 3rd terminal short circuit, the second, the 4th terminal short circuit；The of rear terminal row Y
One, the 3rd terminal short circuit, the second, the 4th terminal short circuit.
6. the line-type heat detector as described in claim 2,3,4 or 5, it is characterised in that:
Sensing cable (1) and TU Trunk Unit (2) are by being welded to connect, or are connected by pluggable terminals.
7. line-type heat detector as claimed in claim 6, it is characterised in that:
When sensing cable (1) and TU Trunk Unit (2) are welded to connect, sensing unit includes following integrated form；
The first is, TU Trunk Unit (2) adds shell in order to protect, and the detection sensor corresponding portion on shell exposing needs
Position windowing；Sensing cable (1) outer layer adds waterproof insulation set (3)；
Or, the second is, after the heart yearn of sensing cable (1) welds with the terminal block terminal of TU Trunk Unit (2), at all sensing lines
Cable (1) and the upper unification of TU Trunk Unit (2) add waterproof insulation set (3), process stranding together, and at cable uplifting window, needs are exposed
Detection sensor expose.
8. line-type heat detector as claimed in claim 6, it is characterised in that:
When sensing cable (1) is connected by pluggable terminals with TU Trunk Unit (2), the integrated form of sensing unit is, TU Trunk Unit
(2) shell is added in order to protect, and detection sensor corresponding site windowing on shell that needs are exposed；Sensing cable (1)
Outer layer adds waterproof insulation set (3).
9. the line-type heat detector as described in claim 2,3,4 or 5, it is characterised in that:
Detection sensor in TU Trunk Unit (2) includes: infrared temperature sensor, semiconductor temperature sensor, Smoke Sensor,
One or more combination in harmful gas sensor, flame sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620597701.2U CN205788616U (en) | 2016-06-17 | 2016-06-17 | Line-type heat detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620597701.2U CN205788616U (en) | 2016-06-17 | 2016-06-17 | Line-type heat detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205788616U true CN205788616U (en) | 2016-12-07 |
Family
ID=58132051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620597701.2U Withdrawn - After Issue CN205788616U (en) | 2016-06-17 | 2016-06-17 | Line-type heat detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205788616U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105869339A (en) * | 2016-06-17 | 2016-08-17 | 无锡圣敏传感科技股份有限公司 | Line type heat fire detector |
| CN112447017A (en) * | 2019-08-27 | 2021-03-05 | 青岛中阳消防科技股份有限公司 | Cable type linear temperature-sensing fire detector capable of alarming fire when circuit is broken |
| CN118089839A (en) * | 2024-02-26 | 2024-05-28 | 上海辉控电子科技有限公司 | Environment sensing cable and environment monitoring system |
-
2016
- 2016-06-17 CN CN201620597701.2U patent/CN205788616U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105869339A (en) * | 2016-06-17 | 2016-08-17 | 无锡圣敏传感科技股份有限公司 | Line type heat fire detector |
| CN105869339B (en) * | 2016-06-17 | 2018-09-11 | 无锡圣敏传感科技股份有限公司 | Line-type heat detector |
| CN112447017A (en) * | 2019-08-27 | 2021-03-05 | 青岛中阳消防科技股份有限公司 | Cable type linear temperature-sensing fire detector capable of alarming fire when circuit is broken |
| CN118089839A (en) * | 2024-02-26 | 2024-05-28 | 上海辉控电子科技有限公司 | Environment sensing cable and environment monitoring system |
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| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Song Zhen Inventor after: Liu Xing Inventor before: Song Zhen Inventor before: Liu Xing Inventor before: Yu Fangyan |
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| CB03 | Change of inventor or designer information | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20161207 Effective date of abandoning: 20180911 |
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| AV01 | Patent right actively abandoned |