CN103698050B - A kind of distribution type fiber-optic heat detection system based on distributed optical fiber temperature sensor - Google Patents
A kind of distribution type fiber-optic heat detection system based on distributed optical fiber temperature sensor Download PDFInfo
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Abstract
Based on a distribution type fiber-optic heat detection system for distributed optical fiber temperature sensor, it is made up of following components: signal handling equipment, acoustooptic alarm system, power supply system; Signal handling equipment comprises surveys temperature main frame and control computer, surveys temperature main frame and distributed optical fiber temperature sensor, for realizing the collection of signal, amplification and conversion; Control computer and comprise special test control software design, mainly realize process, the display of data, function control can; Acoustooptic alarm system realizes deixis, when result meets setting condition, it is possible to produce corresponding warning sound and optical signal; Comprise noise reduction, reset and self-checking function; Power supply system comprises main electricity, fire-fighting power supply and store battery, and fire-fighting power supply can realize the automatic switching of active and standby electricity, and possesses abnormal electrical power supply warning function; This part also has anti-lightning strike and electric current overprotection function simultaneously. System has multiple survey temperature passage, can expand according to different demands.
Description
Technical field
The present invention relates to a kind of distribution type fiber-optic heat detection system based on distributed optical fiber temperature sensor.
Background technology
Distributed optical fiber temperature sensor is advanced temperature sensor, Raman scattering effect and OTDR technique is utilized to realize the distributed measurement to temperature field residing for sensitive optical fibre, have that highly sensitive, electromagnetism interference, essential safety, weight are light, life-span length, reliability advantages of higher, it is possible to be widely used in power cable, subway tunnel, coal mine roadway, petroleum storage tank, the monitoring temperature of heavy construction structure and fire and report to the police.
In these system levels are applied, single temperature sensor can not meet the demand of user's practical application completely, often need to combine temperature sensor with control computer, acoustic-optic alarm and fire-fighting power supply, store battery etc., it is achieved function integrated.
Summary of the invention
It is an object of the invention to provide a kind of distribution type fiber-optic heat detection system based on distributed optical fiber temperature sensor. The system integration temperature measuring system, sound and light alarm Controlling System and power supply system, and possess multiple interfaces expansion, simple operation, function is perfect, effectively meets the application demand in actual engineering.
The technical scheme of the present invention is: a kind of distribution type fiber-optic heat detection system based on distributed optical fiber temperature sensor, comprising: signal handling equipment (1), acoustooptic alarm system (2) and power supply system (3), wherein:
Signal handling equipment (1) comprises surveys temperature main frame (11) and control computer (12); Survey temperature main frame (11) i.e. distributed optical fiber temperature sensor (being called for short DTS), comprise light source (111), wavelength division multiplexer (112), opto-electronic conversion module (113), amplification module (114) and data acquisition module (115); Control computer (12) comprises test module (121) and control module (122); The pulse laser that light source (111) produces is injected into through wavelength division multiplexer (112) in the temperature-measuring optical fiber surveying temperature passage, the Raman Back Scattering signal produced in temperature-measuring optical fiber is again via wavelength division multiplexer (112), receive by opto-electronic conversion module (113) and amplify through amplification module (114), finally gather by data acquisition module (115) and upload to test module (121), after test module (121) calculating, result is transferred to control module (122); Receiving the data of test module (11) when control module (122) and judge, if meeting alert if, warning action instruction being sent to sound and light alarm module (2); Receiving the data of test module (11) when control module (122) and judge, if meeting fault condition, fault actions instruction being sent to sound and light alarm module (2);
Acoustooptic alarm system (2) comprises rly. (21), warning indicating module (22), fault indication module (23) for realizing various signal designation function; The warning action instruction produced from control module (122) is when serial port (27) is issued to rly. (21), rly. (21) response instruction also controls warning indicating module (22), lights the pilot lamp signal surveying temperature passage and sends warning buzzer signal; The fault actions instruction produced from control module (122) is when serial port (27) is issued to rly. (21), rly. (21) response instruction, control fault indication module (23), lights the pilot lamp signal surveying temperature passage and sends the fault buzzer signal being different from warning buzzer signal;
Power supply system (3) comprises primary source (31), fire-fighting power supply (32), standby power supply (33), air switch and lightning protection device (34) and master switch (35); Primary source (31) connects outside city electricity, through air switch and lightning protection device (34), is connected to master switch (35) together with standby power supply (33), and the two-way that master switch (35) separates is connected respectively to the corresponding wiring end of fire-fighting power supply (32) again; Fire-fighting power supply (32) is drawn final confession and is wired to signal handling equipment (1), acoustooptic alarm system (2) and power supply system (3); Master switch (35) achieves the two-way control of primary source (31) and standby power supply (33), when master switch (35) is opened, all parts are all in power supply state, when master switch (35) closes, primary source (31) and standby power supply (33) all cut off, whole system cut-off; When outside abnormal electrical power supply, fire-fighting power supply (32) realizes the automatic switching of primary source (31) with standby power supply (33), also can produce warning sound and indication fault type.
Described survey temperature passage is multiple, and the selection of passage can be undertaken by photoswitch, and can expand according to different actual demands, flexibly and easily, reduces application cost.
Described acoustooptic alarm system (2) also comprises silencing function module (24). Under warning or fault state, when extraneous user triggers silencing function module (24), rly. (21) response triggers, and signal is uploaded to control module (122) through serial port (27), rly. (21) receives the noise reduction after control module (122) is converted or reset action instruction again via serial port (27), and control warning indicating module (22) or fault indication module (23) close pilot lamp signal or buzzer signal.
Described acoustooptic alarm system (2) also comprises self-checking function module (25). When extraneous user triggers self-checking function module (25), rly. (21) response triggers, and signal is uploaded to control module (122) through serial port (27), then rly. (21) receives the self-checking behavior instruction after control module (122) is converted via serial port (27) again, the break-make of control warning indicating module (22) and fault indication module (23) middle instruction modulating signal or buzzer signal, to check warning indicating module (22) and the working order of fault indication module (23).
Described acoustooptic alarm system (2) also comprises reset function module (26); Under warning or fault state, when extraneous user triggers reset function module (26), rly. (21) response triggers, and signal is uploaded to control module (122) through serial port (27), rly. (21) receives the noise reduction after control module (122) is converted or reset action instruction again via serial port (27), and control warning indicating module (22) or fault indication module (23) close pilot lamp signal or buzzer signal.
Described acoustooptic alarm system (2) also comprises silencing function module (24), self-checking function module (25), reset function module (26); Under warning or fault state, when extraneous user triggers the silencing function module (24) in sound and light alarm module (2) or reset function module (26), control module (122) receives the trigger request uploaded by sound and light alarm module (2), trigger request is converted to noise reduction or reset action instruction by control module (122), and is issued to sound and light alarm module (2); In normal operation, user triggers the self-checking function module (25) in sound and light alarm module (2), control module (122) receives the trigger request that sound and light alarm module (2) is uploaded, trigger request is converted to self-checking behavior instruction by control module (122), and is issued to sound and light alarm module (2).
The present invention's advantage compared with prior art is:
(1) system that the present invention sets up, in a distributed manner based on optical fiber sensing device, in conjunction with acoustooptic alarm system and standby electricity system, gathers multi-function in integral whole, and unified is arranged in standard cabinet; When having the condition of a fire or failure message occurs, system self just can send corresponding sound and optical signal, indication warning passage, position; When, after the clear and definite alarm message of manager, directly can manually eliminate warning acoustical signal, when there being new alarm message to produce, acoustical signal also can start again; Acoustooptic alarm system also has self-checking function, it is possible to confirm the working order of its hardware at any time; System has active and standby electricity automatic switching function, when primary power source de-energizes, it is possible to automatically switch to standby power supply, and enough ensures that system entirety runs well more than 8 hours for electric energy; When primary source recovers, primary source can be automatically switched to. The present invention is easy for installation in engineer applied, simple operation, it is to increase the efficiency of first construction, and joint space-efficient ensure that more comprehensive function simultaneously.
(2) acoustooptic alarm system can realize multiple deixis, namely when meeting following setting condition, it is possible to produce corresponding warning sound and optical signal (warning acoustical signal can manually be eliminated) respectively:
A. any position temperature exceedes design temperature threshold value;
B. any position temperature rise rate is more than 10 degrees celsius/minute (namely differential temperature is reported to the police, and can arrange multistage);
C. any position temperature is higher than the medial temperature 20 degrees Celsius of setting subregion;
D. the system fault.
Alarm display information is as follows:
A. the position producing to report to the police and temperature value thereof;
B. report to the police passage;
C. type of alarm;
D. system fault information.
Wherein, when having fire alarm information and fault exists simultaneously, preferentially export firesignal;
Acoustooptic alarm system also comprises reset and self-checking function: the ability that the working order of its hardware possesses real-time self-inspection, can guarantee the normal of working state of system, can report in time once have that working order is abnormal, it is ensured that do not produce wrong report and fail to report phenomenon; Produce fault or guard signal when system, after investigation is eliminated, make system recovery normal operation state by reset function;
(3) power supply system is except realizing the automatic switching of active and standby electricity, when outside abnormal electrical power supply, can produce warning sound and indication fault type; This part also comprises anti-lightning strike and electric current overprotection function simultaneously;
(4) whole system can by a master switch control, and during switch open, all parts are all in power supply state, and when switch cuts out, active and standby electricity all cuts off, system cut-off. And this switch could can only be operated by special tool, there is good safety performance;
(5) system configuration has photoswitch, it is possible to holds multiple survey temperature passage simultaneously, and can expand according to different demands.
Accompanying drawing explanation
Fig. 1 is the layout orthographic plan of the present invention;
Fig. 2 is the data processing schema of the present invention;
Fig. 3 is the mode of connection schematic diagram of the present invention;
Fig. 4 is the functional structure chart of the present invention.
Embodiment
Below in conjunction with accompanying drawing example, the present invention is further elaborated.
As shown in Figure 1, a kind of distribution type fiber-optic heat detection system based on distributed optical fiber temperature sensor comprises: signal handling equipment 1, acoustooptic alarm system 2 and power supply system 3, wherein:
Signal handling equipment 1 comprises surveys temperature main frame 11 and control computer 12; Survey temperature main frame 11 i.e. distributed optical fiber temperature sensor and it is called for short DTS, comprise light source 111, wavelength division multiplexer 112, opto-electronic conversion module 113, amplification module 114 and data acquisition module 115; Control computer 12 comprises test module 121 and control module 122; Acoustooptic alarm system 2 comprises rly. 21, warning indicating module 22, fault indication module 23, silencing function module 24, self-checking function module 25, reset function module 26 and serial port 27, for realizing various signal designation function; Power supply system 3 comprises primary source 31, fire-fighting power supply 32, standby power supply 33, air switch and lightning protection device 34 and master switch 35;
The distribution type fiber-optic heat detection system based on distributed optical fiber temperature sensor as shown in Figure 3, comprises signal handling equipment 10, acoustooptic alarm system 4, power supply system 8. Wherein, signal handling equipment 10 comprises again control computer 3 and surveys temperature main frame 2, is connected with interface 4 by interface 2, interface 3; Power supply system comprises primary source 12, air switch and lightning protection device 11, master switch 7, fire-fighting power supply 6 and store battery 5, and their order of connection is as shown in FIG..
Mode of connection between three big sub-systems is: acoustooptic alarm system 4 is connected with signal handling equipment 10 by interface 1, when the information that the control computer 3 in signal handling equipment receives meets guard signal, just control acoustooptic alarm system 4 by interface 1 and produce corresponding sound and optical signal; Power supply system 8 is after inside connects, and the delivery port eventually through fire-fighting power supply 6 is connected with acoustooptic alarm system 4, signal handling equipment 10, it is achieved to the power supply of whole measurement warning. When primary source is normal, namely primary source 12 is used to be system power supply; When primary source 12 is abnormal, fire-fighting power supply 6 automatically switches to store battery 5 and powers, it is ensured that measure the uninterrupted duty of warning; When primary source 12 recovers after normally, fire-fighting power supply 6 automatically switches back to primary source 12 and powers, and charges for store battery 5 simultaneously.
The distribution type fiber-optic heat detection system based on distributed optical fiber temperature sensor as shown in Figure 4, workflow is as follows:
Primary source 31 connects outside city electricity, through air switch and lightning protection device 34, is connected to master switch 35 together with standby power supply 33, and the two-way that master switch 35 separates is connected respectively to the corresponding wiring end of fire-fighting power supply 32 again; Fire-fighting power supply 32 is drawn final confession and is wired to signal handling equipment 1, acoustooptic alarm system 2 and power supply system 3; Master switch 35 achieves the two-way control of primary source 31 and standby power supply 33, and when master switch 35 is opened, all parts are all in power supply state, and when master switch 35 closes, primary source 31 and standby power supply 33 all cut off, whole system cut-off; When outside abnormal electrical power supply, fire-fighting power supply 32 realizes the automatic switching of primary source 31 with standby power supply 33, also can produce warning sound and indication fault type.
The pulse laser that light source 111 produces is injected into through wavelength division multiplexer 112 in the temperature-measuring optical fiber surveying temperature passage, the Raman Back Scattering signal produced in temperature-measuring optical fiber is again via wavelength division multiplexer 112, receive by opto-electronic conversion module 113 and amplify through amplification module 114, finally gather by data acquisition module 115 and upload to test module 121, after test module 121 calculating, result is transferred to control module 122; Receiving the data of test module 11 when control module 122 and judge, if meeting alert if, warning action instruction being sent to sound and light alarm module 2; Receiving the data of test module 11 when control module 122 and judge, if meeting fault condition, fault actions instruction being sent to sound and light alarm module 2; Under warning or fault state, when extraneous user triggers the silencing function module 24 in sound and light alarm module 2 or reset function module 26, control module 122 receives the trigger request uploaded by sound and light alarm module 2, trigger request is converted to noise reduction or reset action instruction by control module 122, and is issued to sound and light alarm module 2; In normal operation, user triggers the self-checking function module 25 in sound and light alarm module 2, control module 122 receives the trigger request that sound and light alarm module 2 is uploaded, and trigger request is converted to self-checking behavior instruction by control module 122, and is issued to sound and light alarm module 2;
From the warning action instruction of control module 122 generation when serial port 27 is issued to rly. 21, rly. 21 response instruction also controls warning indicating module 22, lights the pilot lamp signal surveying temperature passage and sends warning buzzer signal; From the fault actions instruction of control module 122 generation when serial port 27 is issued to rly. 21, rly. 21 response instruction, control fault indication module 23, lights the pilot lamp signal surveying temperature passage and sends the fault buzzer signal being different from warning buzzer signal;
Under warning or fault state, when extraneous user triggers silencing function module 24 or reset function module 26, rly. 21 responds and triggers, and signal is uploaded to control module 122 through serial port 27, rly. 21 receives the noise reduction after control module 122 is converted or reset action instruction again via serial port 27, and control warning indicating module 22 or fault indication module 23 close pilot lamp signal or buzzer signal; When extraneous user triggers self-checking function module 25, rly. 21 responds and triggers, and signal is uploaded to control module 122 through serial port 27, then rly. 21 receives the self-checking behavior instruction after control module 122 is converted via serial port 27 again, control warning indicating module 22 and fault indication module 23 indicate modulating signal or the break-make of buzzer signal, to check warning indicating module 22 and the working order of fault indication module 23;
The content not being described in detail in specification sheets of the present invention belongs to and well known to a person skilled in the art prior art.
The above is only the preferred embodiment of the present invention; it is noted that for those skilled in the art, under the premise without departing from the principles of the invention; also can making some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (6)
1. the distribution type fiber-optic heat detection system based on distributed optical fiber temperature sensor, it is characterised in that comprising: signal handling equipment (1), acoustooptic alarm system (2) and power supply system (3), wherein:
Signal handling equipment (1) comprises surveys temperature main frame (11) and control computer (12); Survey temperature main frame (11) i.e. distributed optical fiber temperature sensor DTS, comprise light source (111), wavelength division multiplexer (112), opto-electronic conversion module (113), amplification module (114) and data acquisition module (115); Control computer (12) comprises test module (121) and control module (122); The pulse laser that light source (111) produces is injected into through wavelength division multiplexer (112) in the temperature-measuring optical fiber surveying temperature passage, the Raman Back Scattering signal produced in temperature-measuring optical fiber is again via wavelength division multiplexer (112), receive by opto-electronic conversion module (113) and amplify through amplification module (114), finally gather by data acquisition module (115) and upload to test module (121), after test module (121) calculating, result is transferred to control module (122); Receiving the data of test module (121) when control module (122) and judge, if meeting alert if, warning action instruction being sent to acoustooptic alarm system (2); Receiving the data of test module (121) when control module (122) and judge, if meeting fault condition, fault actions instruction being sent to acoustooptic alarm system (2);
Acoustooptic alarm system (2) comprises rly. (21), warning indicating module (22), fault indication module (23) for realizing various signal designation function; The warning action instruction produced from control module (122) is when serial port (27) is issued to rly. (21), rly. (21) response instruction also controls warning indicating module (22), lights the pilot lamp signal surveying temperature passage and sends warning buzzer signal; The fault actions instruction produced from control module (122) is when serial port (27) is issued to rly. (21), rly. (21) response instruction, control fault indication module (23), lights the pilot lamp signal surveying temperature passage and sends the fault buzzer signal being different from warning buzzer signal;
Power supply system (3) comprises primary source (31), fire-fighting power supply (32), standby power supply (33), air switch and lightning protection device (34) and master switch (35); Primary source (31) connects outside city electricity, through air switch and lightning protection device (34), being connected to master switch (35) together with standby power supply (33), the two-way that master switch (35) separates is connected respectively to the corresponding wiring end of fire-fighting power supply (32) again; Fire-fighting power supply (32) is drawn final confession and is wired to signal handling equipment (1), acoustooptic alarm system (2); Master switch (35) achieves the two-way control of primary source (31) and standby power supply (33), when master switch (35) is opened, all parts are all in power supply state, when master switch (35) closes, primary source (31) and standby power supply (33) all cut off, whole system cut-off; When outside abnormal electrical power supply, fire-fighting power supply (32) realizes the automatic switching of primary source (31) with standby power supply (33), also can produce warning sound and indication fault type.
2. a kind of distribution type fiber-optic heat detection system based on distributed optical fiber temperature sensor according to claim 1, it is characterized in that: described survey temperature passage is multiple, the selection of passage can be undertaken by photoswitch, and can expand according to different actual demands.
3. a kind of distribution type fiber-optic heat detection system based on distributed optical fiber temperature sensor according to claim 1, it is characterised in that: described acoustooptic alarm system (2) also comprises silencing function module (24); Under warning or fault state, when extraneous user triggers silencing function module (24), rly. (21) response triggers, and signal is uploaded to control module (122) through serial port (27), rly. (21) receives the noise reduction after control module (122) is converted or reset action instruction again via serial port (27), and control warning indicating module (22) or fault indication module (23) close pilot lamp signal or buzzer signal.
4. a kind of distribution type fiber-optic heat detection system based on distributed optical fiber temperature sensor according to claim 1, it is characterised in that: described acoustooptic alarm system (2) also comprises self-checking function module (25); When extraneous user triggers self-checking function module (25), rly. (21) response triggers, and signal is uploaded to control module (122) through serial port (27), then rly. (21) receives the self-checking behavior instruction after control module (122) is converted via serial port (27) again, the break-make of control warning indicating module (22) and fault indication module (23) middle instruction modulating signal or buzzer signal, to check warning indicating module (22) and the working order of fault indication module (23).
5. a kind of distribution type fiber-optic heat detection system based on distributed optical fiber temperature sensor according to claim 1, it is characterised in that: described acoustooptic alarm system (2) also comprises reset function module (26); Under warning or fault state, when extraneous user triggers reset function module (26), rly. (21) response triggers, and signal is uploaded to control module (122) through serial port (27), rly. (21) receives the noise reduction after control module (122) is converted or reset action instruction again via serial port (27), and control warning indicating module (22) or fault indication module (23) close pilot lamp signal or buzzer signal.
6. a kind of distribution type fiber-optic heat detection system based on distributed optical fiber temperature sensor according to claim 1, it is characterised in that: described acoustooptic alarm system (2) also comprises silencing function module (24), self-checking function module (25), reset function module (26); Under warning or fault state, when extraneous user triggers the silencing function module (24) in acoustooptic alarm system (2) or reset function module (26), control module (122) receives the trigger request uploaded by acoustooptic alarm system (2), trigger request is converted to noise reduction or reset action instruction by control module (122), and is issued to acoustooptic alarm system (2); In normal operation, user triggers the self-checking function module (25) in acoustooptic alarm system (2), control module (122) receives the trigger request that acoustooptic alarm system (2) is uploaded, trigger request is converted to self-checking behavior instruction by control module (122), and is issued to acoustooptic alarm system (2).
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| CN104010455A (en) * | 2014-05-21 | 2014-08-27 | 陈茂良 | Protective cabinet |
| CN104952200A (en) * | 2015-06-20 | 2015-09-30 | 宁波南车时代传感技术有限公司 | DTS (Distributed Optical Fiber Temperature Sensor)-based distributed type train temperature monitoring device |
| CN105508881A (en) * | 2015-12-31 | 2016-04-20 | 天津市州易机电科技有限公司 | Leakage detection and alarming system of heat preservation pipe |
| CN105466595A (en) * | 2015-12-31 | 2016-04-06 | 天津市州易机电科技有限公司 | Distributed optical fiber temperature measuring instrument structure |
| CN105953942A (en) * | 2016-05-20 | 2016-09-21 | 国网天津市电力公司 | Distributed fiber based cable fault diagnosis system |
| CN109060167B (en) * | 2018-07-25 | 2020-08-25 | 昆明理工大学 | Oil-immersed transformer winding inter-cake thermal resistance experiment measurement device based on distributed optical fiber temperature measurement and use method thereof |
| CN113607305B (en) * | 2021-08-05 | 2024-07-23 | 国网江苏省电力有限公司镇江供电分公司 | Alarm method for monitoring power environment of cabinet |
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