CN110975214A - Data acquisition system and fire extinguishing method of underground pipe gallery suspension type dry powder fire extinguishing device - Google Patents
Data acquisition system and fire extinguishing method of underground pipe gallery suspension type dry powder fire extinguishing device Download PDFInfo
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Abstract
The invention discloses a data acquisition system of a suspended dry powder extinguishing device for an underground pipe gallery, which comprises: suspension type dry powder extinguishing device, communication module, area controller, light switch and main control system, the last sensor that is provided with of suspension type dry powder extinguishing device, the sensor is connected with communication module, communication module is connected with area controller and supporting use, area controller passes through the light switch and is connected with main control system, the sensor gathers extinguishing device's under-voltage signal and spouts puts the signal, communication module with gather under-voltage signal with spout put the signal and upload to area controller, area controller will through the light switch under-voltage signal with spout and put the signal and upload to main control system, main control system shows each suspension type dry powder extinguishing device's operating condition in real time. The invention also discloses a fire extinguishing method of the underground pipe gallery suspension type dry powder fire extinguishing device. The invention is convenient for a user to master the running state of the fire extinguishing equipment in time, and saves the maintenance cost of the equipment for a maintenance party.
Description
Technical Field
The invention relates to the technical field of underground pipe galleries, in particular to a data acquisition system and a fire extinguishing method of a suspended dry powder fire extinguishing device of an underground pipe gallery.
Background
The utility tunnel is a tunnel space which is built underground in a city and concentrates various pipelines such as power, communication, gas, municipal administration, water supply and drainage and the like, and is an important infrastructure and a 'lifeline' for ensuring the operation of the city. The construction of utility tunnel engineering is favorable to guaranteeing city safety, perfecting city function, beautifying city view, promoting city intensive high efficiency and transformation development, and the novel urbanization construction that uses male ann new area as the representative has used the utility tunnel mode in a large number in the planning, is favorable to improving city comprehensive bearing capacity and urbanization development quality, is favorable to increasing the make full use of public resource.
Among the utility tunnel, there are more combustible substance, like pipeline, optical cable and cable to the cable is the example, receiving circuit overload, short circuit to ground and contact failure etc. influence under, just can make the cable catch fire, have latent safety risk hidden danger, and take place the mechanism complicacy changeable, the accident is difficult for discovering usually, the incident consequence is serious, the safety guarantee among the piping lane construction operation process is waited for urgently to solve.
After conventional suspension type dry powder extinguishing device installed, do not do the collection to data such as its operating condition, pressure, do not have intelligent data acquisition and display system yet, later stage was overhauld and is relied on the manual work to fire extinguishing device start-up work when appearing the condition of a fire brings the potential safety hazard, leads to when needs fire extinguishing device operation, and fire extinguishing device can not normal use because under-voltage or dry powder spout not enough scheduling problem, delays the condition of a fire and causes serious consequence.
Chinese patent publication No. CN109663253A discloses an underground piping lane fire-fighting robot and a fire-fighting method thereof, and proposes an underground piping lane fire-fighting robot. This robot is light and handy nimble, can get into the underground pipe gallery and patrol and make a video recording under operator's remote control to can automatic acquisition smog and infrared heat information, through the cell-phone of the real-time picture of wireless transmission and information acquisition result to the operator, make the operator can clearly know the inside condition of underground pipe gallery. When monitoring that there is the condition of a fire to take place, the operator can in time drive the robot to the condition of a fire place to drive the module of putting out a fire and put out a fire, prevented the emergence of conflagration effectively, realize effectual safety monitoring and fire control to the underground pipe gallery. This patent application realizes the collection and the fire control of conflagration data through remote control fire-fighting robot and puts out a fire, and its data acquisition and fire control are put out a fire and are subject to fire-fighting robot's removal speed and scope, are difficult to guarantee to gather underground pipe gallery fire control data comprehensively and are difficult to in time arrive the destination when the condition of a fire takes place and effectively put out a fire.
The Chinese patent publication No. CN110237475A discloses a fire extinguishing method for an underground urban comprehensive pipe gallery system, which realizes rapid and convenient warning alarm monitoring by reasonably and optimally arranging fire-fighting equipment in an underground urban pipe gallery, and reduces the investment cost of the underground urban pipe gallery fire-fighting system as far as possible on the premise of ensuring the effectiveness of the fireproof and explosion-proof functions of the underground urban pipe gallery. This patent application needs to arrange the high-pressure water smoke extinguishing device of high cost, and its economic benefits is not high.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a data acquisition system and a fire extinguishing method for a suspended dry powder fire extinguishing device of an underground pipe gallery.
In order to achieve the purpose, the invention adopts the technical scheme that:
underground pipe gallery suspension type dry powder extinguishing device's data acquisition system includes: suspension type dry powder extinguishing device, communication module, area controller, light switch and main control system, be provided with the sensor on the suspension type dry powder extinguishing device, the sensor is connected with communication module, communication module is connected with area controller and supporting use, area controller passes through the light switch and is connected with main control system, wherein, the sensor gathers extinguishing device's under-voltage signal and spouts puts the signal, communication module passes to area controller with the under-voltage signal of gathering with spouting, area controller will through the light switch under-voltage signal with spout and put the signal and upload to main control system, main control system shows each suspension type dry powder extinguishing device's operating condition in real time.
Preferably, the control host is connected with a plurality of zone controllers, and a redundant optical fiber ring network is formed between the control host and the zone controllers by adopting optical fibers.
Preferably, the zone controller is connected to a plurality of communication modules, the communication modules are connected to the fire extinguishing apparatus and each communication module has a unique address code.
Further, the communication module is arranged below the fire extinguishing device and connected with a sensor on the fire extinguishing device. The address code of the communication module also represents the address of the corresponding fire extinguishing device. The address code is used for controlling the host end to display, so that workers can conveniently check the related information of each fire extinguishing device, the position of each fire extinguishing device can be accurately positioned, and the fire condition key monitoring and maintenance are facilitated.
Preferably, when a fire occurs, the communication module is configured to: receiving a starting instruction of the area controller, and starting an electric initiator of the suspension type dry powder extinguishing device; and acquiring the undervoltage signal and the spraying signal of each fire extinguishing device, and feeding back the undervoltage signal and the spraying signal to the area controller through a bus.
Preferably, the zone controller is linked with the automatic fire alarm system, when a fire occurs, the zone controller starts an external audible and visual alarm and displays time delay countdown, after the countdown is finished, a starting instruction is sent to the communication module in the corresponding fire-proof subarea, and the corresponding communication module starts the fire extinguishing device.
Preferably, the control host comprises an electronic map module, a data information query module and a maintenance and maintenance recording module.
The fire extinguishing method of the underground pipe gallery suspension type dry powder fire extinguishing device is realized by adopting the system, and comprises the following steps:
after receiving a signal of an automatic fire alarm system, starting a zone controller for delaying for a first time;
in the first time, all power supplies except emergency lighting in the fire-proof subarea are closed;
the zone controller is started and delayed for a second time;
after the second time, sending an alarm signal to the control host and simultaneously sending a fire extinguishing instruction to all the suspended dry powder fire extinguishing devices in the fire-proof subarea;
gather extinguishing device's status signal and upload to the main control system, status signal includes: an under-voltage signal and a discharge signal.
Specifically, the first time can be set by a user for approving whether the alarm signal of the automatic fire alarm system is correct or not and preventing false alarm. The second time can be set by itself and is used for re-approving the alarm signal, thereby further preventing false alarm.
Further, the communication module of extinguishing device end receives the instruction of putting out a fire, then starts extinguishing device, and the switching value state that starts extinguishing device can be uploaded to regional controller by communication module after gathering, and then upload to the main control system to each extinguishing device's operating condition of real time monitoring at main control system end, the real-time state that shows of main control system end includes: the starting switching value state, the under-voltage state and the spraying state of the fire extinguishing device.
Preferably, when the method adopts a manual control mode, after a signal of an automatic fire alarm system is received, a manual start button in the area controller is pressed to prevent the automatic control fire extinguishing program from being started.
Preferably, the suspension type dry powder extinguishing device comprises a self-temperature-sensing starting mode and an electric starting mode, when a fire disaster occurs, the temperature sensing glass on the extinguishing device is heated to expand and break, or a DC24V electric starting signal given by a zone controller is received, the nozzle is opened, and the superfine dry powder extinguishing agent is sprayed to a protection zone and rapidly diffuses to the periphery under the action of driving nitrogen.
Preferably, a first pressure threshold value of the fire extinguishing device is recorded as F1, a second pressure threshold value is recorded as F2, and a real-time pressure value is recorded as F0; recording the dry powder spraying pressure value as P0;
when F0< F1, the fire extinguishing device is considered to be under-voltage, an under-voltage alarm signal is sent to the area controller, and the fire extinguishing device cannot be started;
when F0 is greater than F2, the pressure of the fire extinguishing device is considered to be too high, and the fire extinguishing device cannot be started;
when P0 is less than 0.3, the dry powder is considered to be sprayed, and the fire extinguishing device cannot be started;
the fire extinguishing device can be activated when F1< F0< F2 and P0> 0.3.
Further, the first pressure threshold of the fire extinguishing device, denoted as F1, is 0.9 MPa.
Compared with the prior art, the invention has the beneficial effects that:
(1) the invention monitors the working state of the suspension type dry powder fire extinguishing device in real time through the mutual cooperation of the sensor, the communication module, the area controller and the control host, and displays the monitoring state at the control host, thereby not only facilitating the user to master the running state of the fire extinguishing device in time, but also saving the maintenance cost of the device for the maintenance party.
(2) When a fire occurs, the fire extinguishing system sends an alarm signal to the control host after the area controller is started for a certain delay time, and simultaneously sends a fire extinguishing instruction to all the suspended dry powder fire extinguishing devices in the fire-proof subarea, the communication module starts the suspended dry powder fire extinguishing devices, acquires state signals of the suspended dry powder fire extinguishing devices and uploads the state signals to the area controller, and the area controller uploads the suspended dry powder fire extinguishing devices and the state signals to the control host through the optical switch.
(3) The zone controller provided by the invention is provided with an optical fiber ring network framework and has a network self-healing function, and a redundant optical fiber ring network is formed between the control host and the plurality of zone controllers by adopting optical fibers, wherein the link of a certain point is broken, so that the normal communication of other points is not influenced.
Drawings
FIG. 1 is a schematic diagram of a system architecture according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart of a method according to an embodiment of the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, the present invention provides a data acquisition system for a suspended powder fire extinguishing apparatus of an underground pipe gallery, comprising: suspension type dry powder extinguishing device, communication module, area controller, light switch and main control system, be provided with the sensor on the suspension type dry powder extinguishing device, the sensor is connected with communication module, communication module is connected with area controller and supporting use, area controller passes through the light switch and is connected with main control system, wherein, the sensor gathers extinguishing device's under-voltage signal and spouts puts the signal, communication module passes to area controller with the under-voltage signal of gathering with spouting, area controller will through the light switch under-voltage signal with spout and put the signal and upload to main control system, main control system shows each suspension type dry powder extinguishing device's operating condition in real time. Through data acquisition system can real-time supervision suspension type dry powder extinguishing device's operating condition, and the user is in the state of each extinguishing device of control host computer end real-time observation, makes things convenient for it to master the operation conditions of device in time, can in time discover when breaking down, and the convenience of maintenance side saves the equipment maintenance cost.
Specifically, extinguishing device adopts suspension type superfine dry powder extinguishing device, main control system adopts the stage formula to hang dry powder main control system, sets up a zone controller in every fire prevention subregion, zone controller adopts wall-hanging gaseous fire extinguishing controller, wherein, adopts optic fibre to constitute redundant optic fibre looped netowrk between dry powder main control system and the on-the-spot fire extinguishing controller.
Furthermore, the on-site fire-extinguishing controller is in a cabinet wall type, is made of carbon steel and sprayed with plastic, is good in waterproof and moisture-proof performance, is provided with an organic glass visual window on a door, and is internally provided with a liquid crystal display screen and a PVC (polyvinyl chloride) light-touch type operating panel. The on-site fire extinguishing controller is linked with the automatic fire alarm system, manually or automatically starts the pressure storage suspension type dry powder fire extinguishing device to release the dry powder fire extinguishing agent, collects the state signal of the fire extinguishing device and uploads the state signal to the control center through the optical switch. And the liquid crystal display screen is used for displaying the working state of the fire extinguishing device.
Specifically, the on-site fire extinguishing controller is provided with an optical fiber ring network framework, has a network self-healing function, is stable in transmission, and can not interrupt signal transmission even if an unexpected fault occurs. The transmission distance is long, and the remote monitoring capability is strong. The system has the functions of network information and fault information alarm.
In a specific application, the dry powder control host can be connected with a plurality of sets of field fire extinguishing controllers, and can be connected with 128 sets of field fire extinguishing controllers at most, and the specific number can be adjusted. The single on-site fire extinguishing controller can be connected with 64 communication modules at most, the specific number is adjustable, the on-site fire extinguishing controller and the communication modules are connected in a two-bus non-polar mode, and each communication module is connected with one fire extinguishing device.
For the return line of the data acquisition system, the following specifications can be adopted: the control circuit line adopts ZR-RVSP-2 x 1.5mm2The copper core flame-retardant polyvinyl chloride insulation shielding double-twisted flexible electric wire; the power supply circuit line adopts NH-RVV-3 x 1.5mm2A copper core fire-resistant polyvinyl chloride insulated flexible wire; detector loop length: less than or equal to 1000 meters; the on-site fire extinguishing controller is connected with the optical switch by adopting a 5-type network cable.
As an implementation mode, the on-site fire extinguishing controller is connected with a plurality of communication modules, each communication module is arranged at the fire extinguishing device end, and specifically can be arranged below the fire extinguishing device and connected with a sensor arranged on the fire extinguishing device to acquire the under-voltage signal and the spraying signal of the fire extinguishing device. The fire extinguishing device can be also provided with an under-pressure alarm and a spray alarm, when the under-pressure of the fire extinguishing device is lower than 0.9MPa, the under-pressure alarm is sent out, and when the spray pressure of the fire extinguishing device is lower than 0.2MPa, the spray alarm is sent out.
Further, each communication module has a unique address code. The system can accurately position each fire extinguishing device through address coding, and the working state and the specific position of each fire extinguishing device can be observed in real time at the control host.
As an embodiment, when a fire occurs, the communication module is configured to: receiving a starting instruction of the area controller, and starting an electric initiator of the suspension type dry powder extinguishing device; and acquiring the undervoltage signal and the spraying signal of each fire extinguishing device, and feeding back the undervoltage signal and the spraying signal to the area controller through a bus.
As an implementation mode, the zone controller is linked with an automatic fire alarm system, when a fire occurs, the zone controller starts an external audible and visual alarm and displays time delay countdown, after the countdown is finished, a starting instruction is sent to the communication module in the corresponding fire-proof zone, and the corresponding communication module starts the fire extinguishing device.
Specifically, when a fire disaster occurs, the area controller can start an external audible and visual alarm through an emergency start button and an emergency stop button or receive linkage signals (switching value signals) given by two paths (and signals) or a path of fire alarm system (centralized control room), synchronously display 30-second countdown on a liquid crystal screen, send a start instruction to modules in the area after the timing is finished, and start the fire extinguishing device through the modules.
As an implementation mode, the control host comprises an electronic map module, a data information query module and a maintenance and protection recording module. The control host also has a field electronic recording function, and the recording time is not less than 24 hours.
Specifically, the control host can be communicated with each zone controller through a human-computer interaction interface and controls the fire extinguishing devices in the zones of each zone controller to be opened and closed. The control host can reflect the pressure state and the discharge state of the fire extinguishing device in each field controller area. Meanwhile, the fire extinguishing device can realize alarm output and linkage output under a fire alarm state and control the spraying of the fire extinguishing device. And can display the address code of the fire alarm area.
As shown in fig. 2, the invention also provides a fire extinguishing method of the underground pipe gallery suspension type dry powder fire extinguishing apparatus, which is realized by adopting the data acquisition system and comprises the following steps:
step 1, when no person exists in a fire prevention subarea, a control mode conversion switch in a regional controller is adjusted to an 'automatic' position, and a fire extinguishing system is in an automatic state;
step 2, the zone controller is linked with the automatic fire alarm system, when the fire signal is sent out by the first loop detector of the fire-proof subarea, an alarm is sent out to indicate the position where the fire occurs, the attention of workers is reminded, and after the fire signal is sent out by the second loop detector, the zone controller starts to enter a delay stage and starts to delay for the first time;
step 3, sending a linkage instruction within the first time, and closing all power supplies except emergency lighting in the fire-proof subarea;
step 4, starting the zone controller to delay a second time, wherein the second time can be 30 seconds;
step 5, after the second time, sending an alarm signal to the control host, simultaneously sending a fire extinguishing instruction to all the suspended dry powder fire extinguishing devices in the fire-proof subarea, starting the fire extinguishing devices, and further spraying superfine dry powder to perform fire extinguishing operation;
and 6, acquiring state signals of the fire extinguishing devices by a sensor, uploading the state signals to a regional controller through a communication module, uploading the state signals to a control host through an optical switch, and enabling the control host to check the working state of each device and the state of corresponding control equipment on a fire extinguishing site in real time and display related information of each fire extinguishing device through an electronic map.
Further, recording a first pressure threshold value of the fire extinguishing device as F1, recording a second pressure threshold value as F2 and recording a real-time pressure value as F0; recording the dry powder spraying pressure value as P0;
when F0< F1, the fire extinguishing device is considered to be under-voltage, an under-voltage alarm signal is sent to the area controller, and the fire extinguishing device cannot be started;
when F0 is greater than F2, the pressure of the fire extinguishing device is considered to be too high, and the fire extinguishing device cannot be started;
when P0 is less than 0.3, the dry powder is considered to be sprayed, and the fire extinguishing device cannot be started;
the fire extinguishing device can be activated when F1< F0< F2 and P0> 0.3.
As an implementation mode, when a person works or is on duty in a fire-prevention subarea, a control mode change-over switch in the automatic fire-extinguishing controller is adjusted to a manual position, the fire-extinguishing system is in a manual control state, when a fire occurs in the fire-prevention subarea, a fire-extinguishing instruction can be prevented by manual starting in the area controller, and a system fire-extinguishing program is stopped.
Specifically, the area controller has two modes of automatic control and manual control for the fire extinguishing device. The field manual control has priority and has the function of preventing misoperation.
In practical application, the suspended dry powder extinguishing device is filled with ABC superfine dry powder extinguishing agent and filled with low-pressure nitrogen, so that A, B, C-type fire and electrified electric fire can be quickly extinguished. The system is mainly applied to cable tunnels, interlayers, vertical shafts, transformers, power distribution cabinets (rooms), generator rooms, engine rooms of various vehicles and ships, communication machine stations, warehouses, air conditioner rooms and the like. Has the characteristics of quick response, early warning, high-efficiency fire extinguishing and ecological environmental protection. Can realize two modes of self-temperature-sensing starting (68-degree temperature-sensing glass ball) and electric starting.
Specifically, when a fire disaster occurs, the temperature sensing glass on the fire extinguishing device is heated to expand and break, or a DC24V electric starting signal is received from a zone controller, the nozzle is opened, the ABC superfine dry powder fire extinguishing agent is sprayed to a protection zone and rapidly spreads to the periphery under the action of driving nitrogen, and flames are instantly extinguished under the continuous physical and chemical actions of the ABC superfine dry powder fire extinguishing agent.
Further, the electrical initiator operating voltage: DC 24V; working current: 0.5A. The fire extinguishing device end is provided with a signal feedback device which can provide two independent signals of under-voltage (the pressure is lower than 0.9MPa) and spraying (the pressure is lower than 0.2MPa) to the communication module, and then the signals are uploaded to the area controller by the communication module. Undervoltage feedback signal: a Normally Open (NO) passive contact (dry contact) which is closed when the pressure in the tank is lower than 0.9MPa, and the contact capacity is DC 24V/1A; and (3) spraying and discharging a feedback signal: and a Normally Closed (NC) passive contact (dry contact) which is opened when the spray is completely discharged, and the contact capacity is DC 24V/1A.
Examples
The embodiment provides a data acquisition system of underground pipe gallery suspension type dry powder extinguishing device, includes: suspension type dry powder extinguishing device, communication module, area controller, light switch and main control system, be provided with the sensor on the suspension type dry powder extinguishing device, the sensor is connected with communication module, communication module is connected with area controller and supporting use, area controller passes through the light switch and is connected with main control system, wherein, the sensor gathers extinguishing device's under-voltage signal and spouts puts the signal, communication module passes to area controller with the under-voltage signal of gathering with spouting, area controller will through the light switch under-voltage signal with spout and put the signal and upload to main control system, main control system shows each suspension type dry powder extinguishing device's operating condition in real time.
Specifically, the equipment parameters of the suspension type dry powder extinguishing device are shown in table 1:
table 1: the equipment parameters of the suspension type dry powder fire extinguishing device are specifically shown in the table 2:
| serial number | Item | Technical parameters |
| 1 | Model number | |
| 2 | Rated voltage | DC24V |
| 3 | Rated current | ≤0.5A |
| 4 | Operating temperature | -10℃～70℃ |
| 5 | Working humidity | 95% no condensation |
| 6 | Communication protocol/interface | Bus communication |
| 7 | Communication distance | ≥1Km |
| 8 | Material of shell | ABS |
| 9 | Protection class | IP65 |
Table 2: device parameters of a communication module
Specifically, the device parameters of the zone controller are shown in table 3:
table 3: device parameters of zone controller
Specifically, the device parameters of the control host are shown in table 4:
table 4: controlling device parameters of a host
The electrical control requirements of the data acquisition system include:
the zone controller should be arranged for ease of operation and maintenance. The control controller has two functions of automatic control and manual control on the fire extinguishing device. The field manual control has priority and has the function of preventing misoperation. The area controller has the function of monitoring and displaying the working state of the fire extinguishing device. The control host has the function of on-site electronic recording for not less than 24 h. The zone controller and the control host have an optical fiber ring network redundancy framework, the transmission is stable, and even if an unexpected fault occurs, the signal transmission cannot be interrupted. The transmission distance is long, and the remote monitoring capability is strong. The system has the functions of network information and fault information alarm. Hardware equipment adopted by the system is designed according to industrial standards, and can resist strong electromagnetic interference. All devices in the system are provided with watchdog circuits, and the system can automatically recover when a program is abnormal and has an error fault. Digital filter circuits are designed on a data processing board, a code converter and the like in the system to filter interference signals. All field control devices are of a three-proofing (waterproof, dustproof and mildew-proof) design. The equipment selected by the system meets the requirements of anti-lightning and overvoltage protection recommended by ITU, and the equipment interfaces are provided with lightning protection and overvoltage protection circuits. The data port and the network port of the control computer in the system are both provided with special lightning-resistant overvoltage protectors.
This embodiment passes through sensor acquisition extinguishing device's undervoltage signal and spouts the signal, passes to area controller through communication module with the undervoltage signal who gathers with spout the signal, area controller will through the optical switch under-voltage signal with spout and pass to main control system on putting the signal, main control system shows each suspension type dry powder extinguishing device's operating condition in real time to mutually supporting through extinguishing device end sensor, communication module, area controller and main control system, carrying out real-time supervision to suspension type dry powder extinguishing device's operating condition, and will monitor the state and show at the main control system end, not only make things convenient for the user in time to master extinguishing device's running state, also save the equipment maintenance cost for the maintenance side simultaneously.
When there is the fire disaster, this embodiment starts certain delay time back through area controller, sends alarm signal to main control system, sends the instruction of putting out a fire to all suspension type dry powder extinguishing device in the fire prevention subregion simultaneously, communication module starts suspension type dry powder extinguishing device, gathers suspension type dry powder extinguishing device's state signal and upload to area controller, area controller passes through the light switch with suspension type dry powder extinguishing device and self state signal and uploads to main control system, when realizing that the dangerous situation of fire in time handles, has realized the undervoltage warning of extinguishing device and the real time monitoring who puts the warning to spraying in the fire processing process.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. Underground pipe gallery suspension type dry powder extinguishing device's data acquisition system, its characterized in that includes: suspension type dry powder extinguishing device, communication module, area controller, light switch and main control system, be provided with the sensor on the suspension type dry powder extinguishing device, the sensor is connected with communication module, communication module is connected with area controller and supporting use, area controller passes through the light switch and is connected with main control system, wherein, the sensor gathers extinguishing device's under-voltage signal and spouts puts the signal, communication module passes to area controller with the under-voltage signal of gathering with spouting, area controller will through the light switch under-voltage signal with spout and put the signal and upload to main control system, main control system shows each suspension type dry powder extinguishing device's operating condition in real time.
2. The data acquisition system of the underground pipe gallery suspended type dry powder extinguishing device according to claim 1, wherein the control host is connected with a plurality of zone controllers, and a redundant optical fiber looped network is formed between the control host and the zone controllers by adopting optical fibers.
3. The data acquisition system of the underground pipe gallery suspended dry powder fire extinguishing apparatus according to claim 1, wherein the area controller is connected with a plurality of communication modules, the communication modules are connected with the fire extinguishing apparatus and each communication module has a unique address code.
4. The data acquisition system of the underground pipe gallery suspended dry powder fire extinguishing apparatus according to claim 1, wherein the communication module is used for: receiving a starting instruction of the area controller, and starting an electric initiator of the suspension type dry powder extinguishing device; and acquiring the undervoltage signal and the spraying signal of each fire extinguishing device, and feeding back the undervoltage signal and the spraying signal to the area controller through a bus.
5. The data acquisition system of the underground pipe gallery suspended type dry powder fire extinguishing device according to claim 4, wherein the area controller is linked with an automatic fire alarm system, when a fire occurs, the area controller starts an external audible and visual alarm and displays a time delay countdown, after the countdown is finished, a starting instruction is sent to the communication module in the corresponding fire-proof partition, and the fire extinguishing device is started by the corresponding communication module.
6. The data acquisition system of the underground pipe gallery suspended dry powder fire extinguishing device according to claim 1, wherein the control host comprises an electronic map module, a data information query module and a maintenance and maintenance recording module.
7. A method of extinguishing a fire in a suspended dry powder fire extinguishing installation of a subterranean tunnel, using a system according to any one of claims 1 to 6, comprising:
after receiving a signal of an automatic fire alarm system, starting a zone controller for delaying for a first time;
in the first time, all power supplies except emergency lighting in the fire-proof subarea are closed;
the zone controller is started and delayed for a second time;
after the second time, sending an alarm signal to the control host and simultaneously sending a fire extinguishing instruction to all the suspended dry powder fire extinguishing devices in the fire-proof subarea;
gather extinguishing device's status signal and upload to the main control system, status signal includes: an under-voltage signal and a discharge signal.
8. The fire extinguishing method of the underground pipe gallery suspended dry powder fire extinguishing apparatus according to claim 7, wherein when the method adopts a manual control mode, after receiving the signal of the automatic fire alarm system, a manual start button in a lower area controller is pressed to prevent the starting of the automatic control fire extinguishing program.
9. The fire extinguishing method of the underground pipe gallery suspended dry powder fire extinguishing device according to claim 7, wherein the suspended dry powder fire extinguishing device comprises a self-temperature-sensing starting mode and an electric starting mode, when a fire occurs, the temperature sensing glass on the fire extinguishing device expands and breaks due to heating or receives a DC24V electric starting signal given by a zone controller, a nozzle is opened, and the superfine dry powder fire extinguishing agent is sprayed to a protection zone and rapidly spreads to the periphery under the action of driving nitrogen.
10. The fire extinguishing method for the underground pipe gallery suspended dry powder fire extinguishing apparatus according to claim 7, wherein a first pressure threshold value of the fire extinguishing apparatus is recorded as F1, a second pressure threshold value is recorded as F2, and a real-time pressure value is recorded as F0; recording the dry powder spraying pressure value as P0;
when F0< F1, the fire extinguishing device is considered to be under-voltage, an under-voltage alarm signal is sent to the area controller, and the fire extinguishing device cannot be started;
when F0 is greater than F2, the pressure of the fire extinguishing device is considered to be too high, and the fire extinguishing device cannot be started;
when P0 is less than 0.3, the dry powder is considered to be sprayed, and the fire extinguishing device cannot be started;
the fire extinguishing device can be activated when F1< F0< F2 and P0> 0.3.
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