CN103578216B - Fire detecting system - Google Patents
Fire detecting system Download PDFInfo
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- CN103578216B CN103578216B CN201310316938.XA CN201310316938A CN103578216B CN 103578216 B CN103578216 B CN 103578216B CN 201310316938 A CN201310316938 A CN 201310316938A CN 103578216 B CN103578216 B CN 103578216B
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Abstract
The present invention provides fire detecting system, can have function test function in a manner of as not making the connection method of repeater and fire detector complicated as possible.The information of each fire detector is sent to fire signal receiver by the fire detecting system by repeater, and repeater has monitoring unit, and the state of monitoring unit monitoring fire detector and the broken string of power line, fire detector have：Function test portion, function test is carried out to fire detector prespecified at the time of；Break monitoring unit, and power supply line parallel, has terminal resistance and connect with the terminal resistance and be usually the switch of closure state, when the result of function test is that fire detector has abnormal, by making switch turn into open mode, power line is turned into broken string state.
Description
Technical field
The present invention relates to be for example arranged in tunnel to detect the fire detecting system of fire generation.
Background technology
Generally for the fire in monitoring tunnel, multiple fire detectors for detecting fire are provided with tunnel,
Multiple fire detectors are connected with the fire signal receiver for sending or receiving fire signal etc. and being collected, and are formed fire and are visited
Examining system.
Currently used fire detecting system is broadly divided into two kinds according to the transmission mode of signal.One kind is each detection
Device and fire signal receiver carry out the transmission or reception (R types transmission mode) of various signals by repeater, and another kind is each
Fire detector and fire signal receiver are transmitted or received using special signal wire for each of various signals
(p-type contact point mode).
Detector of the R types transmission mode due to that can determine to send alarm, it is possible to it is determined that the place of fire occurs, this
Outside, due to may indicate that the detector of determination, and display part less can also, so with a small amount of wiring number can to big
Amount information is communicated, compared with p-type contact point mode, functionally, management aspect have various advantages, but price is high.This
Outside, due to be powered from fire signal receiver to whole fire detectors, so needing the large-scale power supply of Large Copacity.
Although p-type contact point mode price is relatively low, due to needing special signal wire, so circuit number becomes more, wiring
Expense it is very high.Therefore, by making multiple fire detectors share fire signal line for sending fire signal etc., cloth is made
Simplify in terms of line.But due to sharing wiring, so in the case where fire signal receiver receives signal, it is impossible to it is determined that
The signal received is the signal from which fire detector.
In addition, as the system different from the R types and the plain mode of p-type, there is the 3rd fire disclosed in patent document 1
Detection system.3rd fire detecting system uses the fire signal receiver of R types as fire signal receiver, as fire
Detector uses the fire detector of p-type, the repeater for also using the communication to the two to be relayed, in being connected with power line
The information of fire detector is easily managed after device and fire detector and by power line.By using such knot
Structure, because wiring expense is lower, fire detector is also less expensive in itself, so significantly inhibiting expense as overall.
Prior art literature
Patent document 1：Japanese Laid-Open Patent Publication 2008-250853
Due to the exhaust of the automobile in process of passing through tunnel etc., so the fire detector of the fire detecting system in tunnel sometimes
Tarnish and can not correctly act.Therefore, the R types and p-type fire detecting system generally carry out being used to confirm that fire is visited
Surveying device, whether the function test of normal work (makes the light source luminescent of simulation, to confirm whether fire detector normally carries out fire
The experiment that calamity judges).
But the 3rd fire detecting system is because the connection method of repeater and fire detector is simple, so not
With test function as R types and p-type, thus function test can not be carried out, the detection being difficult to use in tunnel be present
The problem of system.
In addition, be provided with test function on fire detector, but if make fire detector and repeater
Connection is identical with p-type, then the quantity that signal wire be present increases, the problem of so as to cause cost increase.
The content of the invention
In view of the problem of described, the purpose of the present invention is to obtain a kind of fire detecting system, can be not make relaying as far as possible
The complicated mode of the connection method of device and fire detector has function test function.
(1) present invention provides a kind of fire detecting system, and it includes：Fire detector, have receive flame light by
Light portion；And repeater, it is connected by power line with each fire detector, by the repeater each fire
The information of fire detector is sent to fire signal receiver, and the repeater has monitoring unit, and the monitoring unit passes through the electricity
The change of the voltage of source line, the state of the fire detector and the broken string of the power line are monitored, and the detection
The status information of device and the disconnection information of the power line are sent to the fire signal receiver, the detection utensil
Have：Function test portion, function test is carried out to the fire detector prespecified at the time of；And broken string monitoring unit, with
The power supply line parallel, have terminal resistance and connect with the terminal resistance and usually be closure state switch, when the work(
When the result that can be tested is that the fire detector has abnormal, by making the switch turn into open mode, make the power supply
Line turns into broken string state.
(2) in addition, the present invention also provides a kind of fire detecting system, it includes：Fire detector, have and receive flame
The light accepting part of light；And repeater, it is connected by power line with each fire detector, by the repeater each
The information of the fire detector is sent to fire signal receiver, and the repeater has monitoring unit, and the monitoring unit passes through
The change of the voltage of the power line, the state of the fire detector is monitored, and the status information of the fire detector
The fire signal receiver is sent to, the fire detector has：Break monitoring unit, with the power supply line parallel, has
Terminal resistance and connected with the terminal resistance and usually be closure state first switch；Light-emission operation portion, with the power supply
Line parallel, have illuminating part and connect with the illuminating part and usually be open mode second switch；And control unit, bag
Include：Function test portion, by making the light from light source, function test is carried out to the fire detector；And switch switching
Portion, the first switch is turned into open mode in the function test, and the second switch is turned into closure state,
Set the light-emission operation portion so that the second switch is turned into closure state and the first switch is turned into opening
The current value flowed through during the function test of state in the power line is with being closure state and institute in the first switch
State the difference for the current value usually flowed through in the power line that second switch is open mode within the limits prescribed.
(3) in addition, the present invention also provides a kind of fire detecting system, it includes：Fire detector, there is light accepting part, institute
Light accepting part is stated to receive the light of flame and produce electric signal；And repeater, connected by power line and each fire detector
Connect, the information of each fire detector is sent to by the repeater by fire signal receiver, the relaying utensil
There is monitoring unit, the change for the voltage that the monitoring unit passes through the power line monitors the state of the fire detector, and institute
The status information for stating fire detector is sent to the fire signal receiver, and the fire detector has：Illuminating part；Function
Experiment portion, by making the light from light source, function test is carried out to the fire detector；Amplifier, according to putting for regulation
Big multiple amplifies the electric signal；Gain switching circuit, switch the multiplication factor of the amplifier；And multiplication factor switching
Instruction unit, indicate that the gain switching circuit switches the multiplication factor of the amplifier, the multiplication factor switching instruction unit exists
The multiplication factor is set to during the function test value big than usual.
Fire detector includes：Function test portion, function test is carried out to fire detector prespecified at the time of；With
And broken string monitoring unit, and power supply line parallel, there is terminal resistance and connect with the terminal resistance and be usually opening for closure state
Close.
When the result of the function test is that fire detector has abnormal, by making switch turn into open mode, have
The broken string state of power line is produced to consciousness, thus in the monitoring unit of repeater, it can be determined that be broken string state.Therefore,
In monitoring unit, the state of supervision object will not be increased newly, do not change existing monitoring unit, it is possible to directly utilized.In addition, sentencing
In the case of breaking as broken string state, turn into any one state in the exception or broken string state of fire detector there occurs feelings
Condition.In this case, because manager in any case will go live reply, so being sentenced in a manner of same with broken string state
The exception of cutoff fire detector, it is suitable to be used to say that for fortune.
Due to the structure using the above, so the fire detecting system of the present invention can be not make repeater and fire as far as possible
The complicated mode of the connection method of fire detector has function test function.
In addition, in the present invention, first switch is turned into open mode in function test by switching switching part and make
Second switch turns into closure state, and the part that electric current flows through thus is switched to light-emission operation portion from broken string monitoring unit, makes to light
Portion lights.Stated differently, since borrowing the electric current that usually flows through carries out function test, thus without in order to test ensure it is other
Power supply.
In addition, setting light-emission operation portion so that the current value flowed through in function test in power line with usually in electricity
The difference of the current value flowed through in the line of source within the limits prescribed, so under function test state, in the monitoring of repeater
In portion can also with usually in the same manner as treat.Therefore, in monitoring unit, without newly increasing the state of supervision object, in other words,
Do not change existing monitoring unit can directly to utilize.
Due to the structure using the above, fire detecting system of the invention can be as far as possible to visit repeater and fire
The mode for surveying the connection method complexity of device has function test function.
In addition, there is the fire detecting system of the present invention multiplication factor to switch instruction unit, in function test, put by
Big multiple switches to value big than usual, even if the electric current used is small, the light quantity of illuminating part is few, can also carry out function test.
Thus, for example borrowing the small electric current usually flowed through in power line, make light from light source, function test can also be carried out.Such as
Fruit is so cooked, then without ensuring other power supply to test.
Due to the structure using the above, fire detecting system of the invention can be as far as possible to visit repeater and fire
The mode for surveying the connection method complexity of device has function test function.
Brief description of the drawings
Fig. 1 is the explanation figure for the fire detecting system for illustrating one embodiment of the present invention, is to repeater and fire spy
Survey the figure that device illustrates.
Fig. 2 is the explanation figure for the fire detecting system for illustrating one embodiment of the present invention, be to fire signal receiver,
The figure that the connection method of repeater and fire detector illustrates.
Fig. 3 is the explanation figure for the fire detecting system for illustrating one embodiment of the present invention, is to the fire in repeater
The explanation figure that the determination methods of the state of detector illustrate.
Fig. 4 is a kind of explanation figure for the state of fire detector for illustrating Fig. 1.
Fig. 5 is the explanation figure of the explanation other state different from Fig. 4 state.
Fig. 6 is the explanation figure of the explanation other state different from Fig. 4 and Fig. 5 state.
Fig. 7 is the explanation figure of the explanation other state different from Fig. 4, Fig. 5 and Fig. 6 state.Description of reference numerals
S1 first switches, S2 second switches, S3 the 3rd are switched, and S4 the 4th is switched, and 1 fire detecting system, 3 fire signals connect
Receive device, 5 repeaters, 7 fire detectors, 9 external power sources, 11 control units, 13 voltage measurement portions, 15 first resistors, 17 first electricity
Pressure meter, 19 second resistances, 21 second voltage meters, 23 monitoring units, 31 light-receiving glass, 33 light accepting parts, 35 light enlarging sections, 37 is luminous
Portion, 39 light-emission operation portions, 41 broken string monitoring units, 43 fault-signal portions, 44 fire signal portions, 45 control units, 47 amplifiers, 49 increase
Beneficial switching circuit, 51 terminal resistances, 53 constant-current circuits, 55 fault-signal transmission resistance, 57 fire signal transmission resistance, 61
Detection portion, 63 function test portions, 65 failure detecting sections, 67 switch switching parts, 69 multiplication factors switching instruction unit.
Embodiment
1~Fig. 3 of reference picture illustrates to the fire detecting system 1 of one embodiment of the present invention.
As shown in Fig. 2 fire detecting system 1 is arranged in tunnel, there is fire signal receiver 3, repeater 5 and fire
They are described in detail by fire detector 7 below.
Fire signal receiver
Fire signal receiver 3 is made up of the R type fire signal receivers for being facing generally towards building of standard, passes through repeater
5 receive the state of fire detector 7, show the exception of fire or fire detector 7.
As shown in Fig. 2 fire signal receiver 3 by S+ lines and S- lines with parallel and can send or the side of reception signal
Formula is connected with more repeaters 5.Sent between fire signal receiver 3 and repeater 5 or reception signal use make use of arteries and veins
The R type transmission modes of signal are rushed, therefore, fire signal receiver 3 can identify a platform repeater 5 (address administration).
Repeater
Repeater 5 is made up of the general repeater towards usual building, with fire signal receiver 3 and fire detector 7
Connection, relayed for exchanging the information of the two.
As shown in figure 1, repeater 5 is connected using PI lines and NI lines with external power source 9, powered by power supply.An in addition, fire
Fire detector 7 is connected by being used as the C lines, Kt lines and L lines of power line with repeater 5, forms the C-Kt for including C lines and Kt lines
C-L circuits between circuit including C lines and L lines.Repeater 5 is by monitoring the voltage of C-Kt circuits and C-L circuits, Ke Yijian
The state of fire detecting fire detector 7, the state notifying fire signal receiver 3 for the fire detector 7 that repeater 5 detects.
Repeater 5 has：Control unit 11, various controls are carried out to repeater 5；And voltage measurement portion 13, survey
Measure the magnitude of voltage of C-Kt circuits and C-L circuits.Control unit 11 and voltage measurement portion 13 are carried out specifically referring to Fig. 1
It is bright.
Voltage measurement portion
Voltage measurement portion 13 has：First resistor 15, it is connected on C-Kt circuits, there is defined resistance value；First electricity
Pressure meter 17, the voltage at measurement first resistor 15 both ends；Second resistance 19, it is connected on C-L circuits, there is defined resistance value；
And second voltage meter 21, the voltage at measurement second resistance 19 both ends.First voltage meter 17 and second voltage meter 21 and control unit
11 connections, the magnitude of voltage measured is obtained by control unit 11.
Control unit
Control unit 11 has monitoring unit 23, and monitoring unit 23 is according to the He of first resistor 15 measured using voltage measurement portion 13
The magnitude of voltage at the both ends of second resistance 19, the current value flowed through in C-Kt circuits and C-L circuits is calculated, according to the electric current
Value judges the state of (monitoring) fire detector 7, and monitoring result is sent to fire signal receiver 3.Pass through miniature calculating
Machine performs regulated procedure to realize monitoring unit 23.
In addition, the state of fire detector 7 for example including：In the normal state (usually) implemented in detection；Place
In by testing the function test state confirmed in the function of oneself；Result as function test represents covering fire detector
The light-receiving glass 31 in the face of 7 front side is stained state in defaced；Represent the broken string state of power line broken string；And represent
Circuit of oneself etc. is in the malfunction of failure；Etc..
Reference picture 3, fire, which is visited, to be judged according to the current value flowed through in first resistor 15 (C-Kt circuits) to control unit 11
The method for surveying the state of device 7 illustrates.Fig. 3 represent the state for judging fire detector 7 that is carried out in control unit 11 and
The relation of the current value flowed through in C-Kt circuits.In figure 3, the dextrad of straight line represents current value increase.
As shown in figure 3, if current value is less than defined threshold value A, control unit 11 is judged as YES broken string state or is stained
State, if current value is judged as normal state more than threshold value A and in defined below threshold value B, control unit 11, if electric
Flow valuve exceedes threshold value B, then is judged as malfunction.
Similarly, if the current value increase flowed through in second resistance 19 (C-L circuits), more than defined threshold value, then
It is judged as detection state.
The state notifying fire signal receiver 3 of the fire detector 7 obtained as described above.As noted previously, as
Fire signal receiver 3 can identify repeater 5, so fire signal receiver 3 is to come from by identifying the signal received
The signal of which repeater 5, it is possible to it is determined that being the state of which fire detector 7.
In addition, distribute an external power source 9 to one to several repeater 5.Therefore the small can of power supply capacity, and can be with
Reduce the volume of external power source 9.Therefore easily storage, by configuring near repeater 5, can shorten wiring distance.In addition,
Power supply can also power from fire signal receiver 3 via repeater 5 to fire detector 7, it is possible to have with fire signal
The different other power supply of receiver 3.
Fire detector
Fire detector 7 is directed to several wavelength given thresholds in the wavelength contained in flame, if in the light received
The light income of the wavelength contained has exceeded each threshold value of setting, then is judged as fire.As depicted in figs. 1 and 2, fire detector
7 include：Light-receiving glass 31, cover the face of the front side of fire detector 7；Light enlarging section 35, have and receive transmitted through light glass
The light accepting part 33 of the light of glass 31；Light-emission operation portion 39, there is illuminating part 37, illuminating part 37 is arranged on the outside of light-receiving glass 31,
Illuminating part 37 is used for the light for sending simulated fire, and fire whether can be normally carried out to fire detector 7 and judges to test；Broken string
Monitoring unit 41, for notifying to detect broken string in the case where detecting broken string or being stained or being stained；Fault-signal portion 43, use
In in the case where detecting oneself failure notice detect oneself failure；Fire signal portion 44, for detecting fire
In the case of notice detected fire；And control unit 45, carry out the implementation respectively tested and carry out various notices etc..
Referring to Fig. 1 and Fig. 3 to light enlarging section 35, light-emission operation portion 39, broken string monitoring unit 41, fault-signal portion
43rd, fire signal portion 44 and control unit 45 are described in detail.
Light enlarging section
Light enlarging section 35 includes：Light accepting part 33, is made up of photo detector, receives the light from outside or illuminating part 37,
Produce electric signal；Amplifier 47, the electric signal is amplified according to the multiplication factor of regulation；And gain switching circuit 49, cut
Change the multiplication factor of amplifier 47.
Amplifier 47 is connected with control unit 45, control unit 45 can be amplified after electric signal.
Gain switching circuit 49 is connected with control unit 45 and amplifier 47, and according to the instruction from control unit 45, switching is put
The multiplication factor of big device 47.Because the electric current flowed through in C-Kt circuits is small, so can not make what illuminating part 37 fully lighted
In situation etc., multiplication factor is set as value big than usual.
Break monitoring unit
The monitoring unit 41 that breaks and C-Kt lines in parallel, have terminal resistance 51 and first switch S1, first switch S1 and end
End resistance 51 is connected and is usually closure state (conducting state).
Light-emission operation portion
Light-emission operation portion 39 and C-Kt lines in parallel, have：Illuminating part 37；Second switch S2, connected with illuminating part 37 and
It is usually open mode (off-state)；And constant-current circuit 53, for adjusting the electric current flowed through in C-Kt circuits.
Illuminating part 37 is made up of LED etc., sends the light of at least one of the wavelength that can be detected containing light accepting part 33.The
Two switch S2 turn in function test, and light-emission operation portion 39 turns on, and illuminating part 37 is luminous.Illuminating part 37 is located at as described above
The outside of light-receiving glass 31, if illuminating part 37 is luminous, light irradiates through light-receiving glass 31 to light accepting part 33.
Constant-current circuit 53 so that when second switch S2 is turned on the current value that is flowed through (during function test) in C-Kt circuits and
The mode that current value usually is converged in terms of threshold value in same range is adjusted.By doing so it is possible, in function test,
Can be with usually equally treating in monitoring unit 23.
In addition in the content, employ and current value is adjusted by constant-current circuit 53, but can also be without using constant current
Circuit 53, but current value is made as current value usually by defined resistance etc..
Fault-signal portion
Fault-signal portion 43 and C-Kt lines in parallel, there is fault-signal to send and switch S3 with resistance 55 and the 3rd, the 3rd
Switch S3 connects with fault-signal transmission resistance 55 and usually disconnected.
Fire signal portion
Fire signal portion 44 and C-L lines in parallel, there is fire signal to send and switch S4 with resistance 57 and the 4th, the 4th
Switch S4 connects with fire signal transmission resistance 57 and usually disconnected.
Generally only have a small amount of electric current to flow through in C-L circuits, but when judging fire by making the 4th switch S4 conductings,
Fire signal portion 44 turns on, and becomes to flow through substantial amounts of electric current in C-L circuits.
Control unit
Control unit 45 has：Detection portion 61；Function test portion 63, the luminous of illuminating part 37 is received, carries out function examination
Test；Failure detecting section 65, detect the malfunction of the circuit etc. in fire detector 7；Switching part 67 is switched, to first switch S1
~the four switch S4 ON/OFF etc. switches over；And multiplication factor switching instruction unit 69, instruction handoff gain switching electricity
The multiplication factor on road 49.Regulated procedure is performed by microcomputer to realize the various pieces.
Control unit 45 can make illuminating part 37 luminous, carry out whether fire detector normally enters by function test portion 63
The experiment that row fire judges.Function test include to light-receiving glass 31 be stained that state tested be stained experiment.
In the following description book, illustrated as the content of function test exemplified by being stained experiment.
Control unit 45 controls first switch S1~3rd to open using switching part 67 is switched, according to the state of fire detector 7
S3 ON/OFF is closed, the magnitude of current for making to flow through in C-Kt circuits changes.By doing so it is possible, the state of oneself can be led to
Know the repeater 5 monitored to the electric current flowed through in C-Kt circuits.
In the fire detecting system 1 of the present embodiment formed as described above, reference table 1 and Fig. 3~Fig. 7, according to
Every kind of state, to notifying the method for state of fire detector 7 to carry out from fire detector 7 to repeater 5 using C-Kt circuits
Explanation.
Table 1 is to summarize that first switch S1~3rd is switched S3 ON/OFF under every kind of state of fire detector 7
Method.
Table 1
In table 1, each row represents the state of fire detector 7, each row since left represent successively first switch S1~
Shape in 3rd switch S3 ON/OFF, the current value and repeater 5 (monitoring unit 23) now flowed through in C-Kt circuits
State judges.
Normal state
In the case of normal state, control unit 45 only makes first switch S1 conductings (with reference to table 1 and Fig. 4).By so
Doing, current value a electric current flows through in C-Kt circuits, because electric current is converged in threshold value A between below upper threshold value B, so
Judge fire detector 7 for normal state (reference picture 3) in repeater 5.
It is stained trystate
In the case where being stained trystate, control unit 45 disconnects first switch S1 from the situation of normal state, only makes the
Two switch S2 conductings (with reference to table 1 and Fig. 5).By turning on second switch S2, the part of conducting switches from broken string monitoring unit 41
To light-emission operation portion 39, illuminating part 37 is luminous, and implementation is stained experiment.Function test is carried out due to borrowing the electric current usually flowed through,
So without being connected up to test increase in addition to ensure electric power.
Now, it is adjusted using constant-current circuit 53 so that the electric current with usually same degree is flowed through in C-Kt circuits
Value a ' (≒ current values a).Therefore, judge fire detector 7 for normal state (reference picture 3) by the monitoring unit 23 of repeater 5.Cause
This, in monitoring unit 23, will not increase the state of supervision object newly, in other words, not change existing monitoring unit 23, directly utilize
Monitoring unit 23 can be carried out function test (being stained experiment).
Fire detector 7 changes state according to the result for being stained experiment.Here, illustrated to being stained experiment.From luminous
The light that portion 37 is sent is irradiated to light accepting part 33 through light-receiving glass 31, and light accepting part 33 is according to the light quantity production transmitted through light-receiving glass 31
Raw electric signal.The electric signal is exaggerated device 47 and amplified, and is obtained by control unit 45, and judgement is stained situation.
Light-receiving glass 31 be stained be will not turn into hinder detection being stained of degree, transmitted through light quantity it is enough
In the case of (being, for example, more than the 50% of initial value), the electric signal of setting above intensity can be obtained, is judged as normal.
On the other hand, light-receiving glass 31 be stained as hinder detection degree in the case of, because transmitted through
Deficiency in light quantity, electric signal become weaker than setting, are judged as being stained.
Now, the current value a ' when with experiment initially cannot fully be lighted, is also judged as dirt even if not being stained
In the case of damage, by the multiplication factor of the switched amplifier 47 of gain switching circuit 49, multiplication factor is set as larger value.
In this case, original multiplication factor is returned to after off-test.
By doing so it is possible, even if causing the light quantity of illuminating part 37 few because electric power is the electric power (current value a ') of deficiency,
It can carry out being stained experiment.
If result of the test is judged as and terminated that control unit 45 makes second switch S2 return to disconnection normal, only make the
One switch S1 conductings (with reference to table 1 and Fig. 4).By doing so it is possible, repeater 5 is identical in preceding and experiment with testing, it is judged as YES flat
Normal state (reference picture 3).
It is stained state and broken string state
On the other hand, in the case where being judged as being stained, control unit 45 disconnects second switch S2 from trystate is stained
(with reference to table 1 and Fig. 6).By doing so it is possible, the electric current flowed through in C-Kt circuits is reduced to electric current few than usual, and turn into
Less than the current value b of threshold value A.
In addition, C-Kt circuits also become lower than threshold value A in the case of broken string state.
Therefore, detected in the side of repeater 5 current value be less than the value of threshold value A in the case of, fire detector 7 is unclear
It is broken string state or is stained state.But which either described state, it is less than threshold to receive the current value detected
The manager of value A value will actually confirm to send the state of the fire detector 7 of signal in the place of setting.
Therefore, in the case where detecting that current value is current value b with repeater 5 (monitoring unit 23), without in repeater 5
Especially differentiation is notice fire signal receiver 3 after which state, is judged as any one in being meant to be broken string or being stained
The broken string of state is stained state (reference picture 3), and be judged as breaking or be stained state content notice fire signal receive
Device 3.
By doing so it is possible, without increasing wiring between repeater 5 and fire detector 7, it is possible to which informing function is tested
When exception (situation, be stained experiment after be stained state).
In addition it is also possible to judged as described below：When fire detector 7 at the time of being stained experiment and uses monitoring unit
23 detect current value turn into less than threshold value A current value b at the time of it is consistent when, be judged as being stained；When the dirt of fire detector 7
When inconsistent at the time of at the time of damage experiment with detecting current value with monitoring unit 23 as less than the current value b of threshold value A, judge
For broken string.In this case, at the time of being stained experiment to be held in the side of repeater 5, such as it can also preset and be stained examination
At the time of testing, timer can also be used to carry out timing to the time untill experiment is stained.In addition it is also possible to using following sides
Formula：When fire detector 7 is stained, such as it is iteratively repeated first switch S1, second switch S2, the 3rd switch S3 shape usually
State switchs S3 state with first switch S1 when being stained, second switch S2, the 3rd, exports based on current value a's and current value b
Pulse signal, in the situation, repeater 5 (monitoring unit 23) is judged as being stained.Malfunction
If the builtin voltage of fire detector 7 is less than setting, failure detecting section 65 is judged as failure.In the situation
Under, control unit 45 is the 3rd switch S3 conductings (with reference to table 1 and Fig. 7).By doing so it is possible, first switch S1 and the 3rd switch S3 into
For conducting state, the electric current flowed through in C-Kt circuits increases than usual, and current value becomes the current value c more than threshold value B.In
It is to be judged as failure (reference picture 3) in repeater 5, the meaning for being judged as failure is notified fire signal receiver 3.In addition,
If fire detector 7 detects failure, stop the function in addition to the function of confirming failure.
As described above, in the present embodiment, repeater 5 has monitoring unit 23, the electricity that monitoring unit 23 passes through C-Kt circuits
The state of bucklingization monitoring fire detector 7 and the broken string of C-Kt circuits, and it is sent to fire signal receiver 3.Detection
Device 7 has：Function test portion 63, function test is carried out to fire detector 7 prespecified at the time of；Break monitoring unit 41,
With C-Kt lines in parallel, have terminal resistance 51 and connected with terminal resistance 51 and usually be closure state first switch S1.
The result of the function test be fire detector 7 deposit in an exceptional case, by make first switch S1 into
For open mode, the broken string state of C-Kt circuits is produced consciously, thus can be sentenced in the monitoring unit 23 of repeater 5
Break as broken string state.Therefore, in monitoring unit 23, without increasing the state of supervision object newly, existing monitoring unit 23 is not changed, just
Can directly it utilize.
Structure as a result of more than, fire detecting system 1 can be not make repeater 5 and fire detector as far as possible
The complicated mode of 7 connection method has function test function.
In addition, in the present embodiment, repeater 5 has monitoring unit 23, monitoring unit 23 monitors that the voltage of C-Kt circuits becomes
Change, it is normal state, malfunction or broken string state to judge fire detector 7, and judged result is sent to fire signal
Receiver 3.
In addition, fire detector 7 has：Break monitoring unit 41, and C-Kt lines in parallel, have terminal resistance 51 and with
Terminal resistance 51 is connected and is usually the first switch S1 of closure state；And light-emission operation portion 39, and C-Kt lines in parallel,
Connected with illuminating part 37 and with illuminating part 37 and usually be open mode second switch S2.
In addition, fire detector 7 has control unit 45, the control unit has：Function test portion 63, by making illuminating part
37 is luminous, and function test (being stained experiment) is carried out to fire detector 7；And switch switching part 67, switch switching part 67 is in work(
First switch S1 is turned into open mode when can test and second switch S2 is turned into closure state.
As described above, switch switching part 67 usually make first switch S1 turn into closure state and make second switch S2 into
For open mode, second switch S2 is turned into closure state in function test and first switch S1 is turned into open mode.It is logical
Cross and so do, the part that switching electric current flows through, turn on light-emission operation portion 39, illuminating part 37 is luminous, can carry out function test.
So, function test is carried out due to borrowing the electric current usually flowed through, so without ensuring other power supply to test.
Now, the current value flowed through in C-Kt circuits is changed, and failure is broken into order to not judged by accident in monitoring unit 23
State, broken string state, with the electric current flowed through when the current value usually flowed through in C-Kt circuits and experiment in C-Kt circuits
The mode of the difference of value within the limits prescribed sets light-emission operation portion 39.Therefore, in monitoring unit 23, without increasing supervision object newly
State, in other words, do not change existing monitoring unit 23, it is possible to directly utilize.
In the present embodiment, due to the structure using the above, so during fire detecting system 1 can be not make as far as possible
There is function test function after the complicated mode of the connection method of device 5 and fire detector 7.
In addition, in the present embodiment, fire detector 7 has：Break monitoring unit 41, with C-Kt lines in parallel, has
Terminal resistance 51 and connected with terminal resistance 51 and usually be closure state first switch S1；Light-emission operation portion 39, with C-Kt
Lines in parallel, have illuminating part 37 and connected with illuminating part 37 and usually be open mode second switch S2.In addition have：Work(
Portion 63 can be tested, by making illuminating part 37 luminous, function test is carried out to fire detector 7；And switch switching part 67, entering
During the row function test, first switch S1 is set to turn into open mode, and second switch S2 is turned into closure state.Therefore,
The part that electric current flows through is switched to light-emission operation from broken string monitoring unit 41 in the function test by switching switching part 67
Portion 39, thus borrow the electric current usually flowed through and can be carried out testing.Therefore other power supply need not be ensured in order to test.
In addition, fire detector 7 has：Amplifier 47, electric signal is amplified according to the multiplication factor of regulation；Gain switching electricity
Road 49, the multiplication factor of switched amplifier 47；And multiplication factor switching instruction unit 69, the instruction switching of gain switching circuit 49 are put
The multiplication factor of big device 47.Therefore, multiplication factor is set to ratio in function test by using multiplication factor switching instruction unit
Usually big value, even if the light quantity of illuminating part is few caused by the electric current deficiency of borrow, the function test can also be carried out.
Due to the structure using the above, fire detecting system 1 can be not make repeater 5 and fire detector 7 as far as possible
The complicated mode of connection method there is function test function.
In addition, control unit 45 (detection portion 61) in the case where detecting fire, as detection state, makes
Four switch S4 conductings, make to flow through the electric current more than defined threshold value in C-L circuits.By doing so it is possible, sentence in repeater 5
Break as fire, the meaning for being judged as fire is notified to fire signal receiver 3.
In addition, in the present embodiment, using the magnitude of voltage measured by voltage measurement portion 13, calculate in C-kt lines
The current value flowed through in road and C-L circuits, the condition adjudgement of fire detector 7 is carried out, but can also use and directly utilize electricity
The structure for the magnitude of voltage that pressure measurement portion 13 measures.In this case, Fig. 3 determination methods are carried out according to magnitude of voltage.
Claims (10)
1. a kind of fire detecting system, it is characterised in that the fire detecting system includes：Fire detector, have and receive fire
The light accepting part of the light of flame；And repeater, it is connected by power line with each fire detector, passes through the repeater handle
The information of each fire detector is sent to fire signal receiver,
The repeater has monitoring unit, and the monitoring unit monitors that the fire is visited by the change of the voltage of the power line
Survey the state of device and the broken string of the power line, and status information and the broken string letter of the power line the fire detector
Breath is sent to the fire signal receiver,
The fire detector has：
Function test portion, function test is carried out to the fire detector prespecified at the time of；And
Break monitoring unit, and one end is connected with a power line and the other end is connected with power line another described, has eventually
End resistance and connect with the terminal resistance and usually be closure state switch,
When the result of the function test is that the fire detector has abnormal, by making the switch turn into open shape
State, the power line is set to turn into broken string state.
2. fire detecting system according to claim 1, it is characterised in that
The fire detector has illuminating part, and the illuminating part sends the light that the light accepting part can detect,
The function test includes following experiments：By making the light from light source, whether the fire detector is normally entered
Row fire judges to be tested.
3. fire detecting system according to claim 1 or 2, it is characterised in that
When the monitoring unit detects the broken string state, at the time of the broken string state is detected with it is described prespecified
At the time of it is consistent when, it is abnormal that the result that is judged as the function test is that the fire detector is present, described disconnected when detecting
When inconsistent at the time of at the time of wire state and described prespecified, it is judged as the power line broken string.
4. a kind of fire detecting system, it is characterised in that the fire detecting system includes：Fire detector, have and receive fire
The light accepting part of the light of flame；And repeater, it is connected by power line with each fire detector, passes through the repeater handle
The information of each fire detector is sent to fire signal receiver,
The repeater has monitoring unit, and the monitoring unit monitors that the fire is visited by the change of the voltage of the power line
The state of device is surveyed, and the status information of the fire detector is sent to the fire signal receiver,
The fire detector has：
Break monitoring unit, and one end is connected with a power line and the other end is connected with power line another described, has eventually
End resistance and connect with the terminal resistance and usually be closure state first switch；
Light-emission operation portion, one end is connected with a power line and the other end is connected with power line another described, has hair
Light portion and connected with the illuminating part and usually be open mode second switch；And
Control unit, including：Function test portion, by making the light from light source, function test is carried out to the fire detector；
And switch switching part, the first switch is turned into open mode in the function test, and make the second switch
As closure state,
Set the light-emission operation portion so that the second switch is turned into closure state and turning into the first switch
The current value that is flowed through during the function test of open mode in the power line with the first switch be closure state,
And the second switch for open mode the current value usually flowed through in the power line difference within the limits prescribed.
5. fire detecting system according to claim 4, it is characterised in that
The light-emission operation portion has constant-current circuit, and the constant-current circuit is adjusted so that in the function test in institute
State the current value that is flowed through in power line and it is described usually when the current value that is flowed through in the power line in terms of threshold value
It is converged in same range.
6. fire detecting system according to claim 4, it is characterised in that
The fire detector has a fault-signal portion, fault-signal portion one end be connected with the power line and the other end with
Another described power line connection, has fault-signal transmission resistance and with the fault-signal transmission resistant series and usually
The 3rd for open mode switchs,
The control unit has the failure detecting section for detecting oneself failure,
The switch switching part, the first switch is turned into closure state, and making the second switch and described
Three switches turn into open mode；The first switch and the 3rd switch is set to turn into open mode in the function test,
And the second switch is turned into closure state,
When the result of the function test is detects abnormal, make the first switch, the second switch and the described 3rd
Switch turns into open mode,
When the failure detecting section detects the failure of the fire detector, make the first switch and the 3rd switch
As closure state, and the second switch is set to turn into open mode.
7. a kind of fire detecting system, it is characterised in that the fire detecting system includes：Fire detector, there is light accepting part,
The light accepting part receives the light of flame and produces electric signal；And repeater, pass through power line and each fire detector
The information of each fire detector, fire signal receiver is sent to by the repeater by connection,
The repeater has monitoring unit, and the monitoring unit monitors the detection by the change of the voltage of the power line
The state of device, and the status information of the fire detector is sent to the fire signal receiver,
The fire detector has：Illuminating part；Function test portion, by making the light from light source, to the detection
Device carries out function test；Amplifier, the electric signal is amplified according to the multiplication factor of regulation；Gain switching circuit, switch institute
State the multiplication factor of amplifier；And multiplication factor switching instruction unit, indicate that the gain switching circuit switches the amplifier
Multiplication factor,
The multiplication factor switching instruction unit is set to the multiplication factor in the function test value big than usual.
8. fire detecting system according to claim 7, it is characterised in that
The fire detector has；
Break monitoring unit, and one end is connected with a power line and the other end is connected with power line another described, has eventually
End resistance and connect with the terminal resistance and usually be closure state first switch；
Light-emission operation portion, one end is connected with a power line and the other end is connected with power line another described, have with
The illuminating part is connected and is usually the second switch of open mode；And
Switching part is switched, in the function test, the first switch is turned into open mode, and make the second switch
As closure state,
Set the light-emission operation portion so that the second switch is turned into closure state and turning into the first switch
The current value that is flowed through during the function test of open mode in the power line with the first switch be closure state,
And the second switch for open mode the current value usually flowed through in the power line difference within the limits prescribed.
9. fire detecting system according to claim 8, it is characterised in that
The light-emission operation portion has constant-current circuit, and the constant-current circuit is adjusted so that in the function test in institute
State the current value that is flowed through in power line and it is described usually when the current value that is flowed through in the power line in terms of threshold value
It is converged in same range.
10. fire detecting system according to claim 8, it is characterised in that
The fire detector has a fault-signal portion, and fault-signal portion one end is connected and another with a power line
End be connected with power line another described, with fault-signal transmission resistance and with the fault-signal transmission resistant series and
It is usually the 3rd switch of open mode,
Control unit has the failure detecting section for detecting oneself failure,
The switch switching part, the first switch is turned into closure state, and making the second switch and described
Three switches turn into open mode；The first switch and the 3rd switch is set to turn into open mode in the function test,
And the second switch is turned into closure state,
When the result of the function test is detects abnormal, make the first switch, the second switch and the described 3rd
Switch turns into open mode,
When the failure detecting section detects the failure of the fire detector, make the first switch and the 3rd switch
As closure state, and the second switch is set to turn into open mode.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012-166043 | 2012-07-26 | ||
| JP2012166007A JP5911139B2 (en) | 2012-07-26 | 2012-07-26 | Fire detection system |
| JP2012-166007 | 2012-07-26 | ||
| JP2012-166029 | 2012-07-26 | ||
| JP2012166043A JP5911141B2 (en) | 2012-07-26 | 2012-07-26 | Fire detection system |
| JP2012166029A JP5911140B2 (en) | 2012-07-26 | 2012-07-26 | Fire detection system |
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| Publication Number | Publication Date |
|---|---|
| CN103578216A CN103578216A (en) | 2014-02-12 |
| CN103578216B true CN103578216B (en) | 2018-01-02 |
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ID=50049923
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310316938.XA Active CN103578216B (en) | 2012-07-26 | 2013-07-25 | Fire detecting system |
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| Country | Link |
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| CN (1) | CN103578216B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102015223253A1 (en) * | 2015-11-25 | 2017-06-01 | Minimax Gmbh & Co. Kg | Method for determining threshold values of a condition monitoring unit for a fire detection and / or extinguishing control center and condition monitoring unit and system therewith |
| CN107180508A (en) * | 2017-05-22 | 2017-09-19 | 南京英安特科技实业有限公司 | A kind of system and method for alarm defence area multiplication |
| JP6887312B2 (en) * | 2017-05-24 | 2021-06-16 | ホーチキ株式会社 | Disaster prevention system |
| JP7064890B2 (en) * | 2018-01-22 | 2022-05-11 | ホーチキ株式会社 | Fire alarm system |
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| CN103578216A (en) | 2014-02-12 |
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