CN210324496U

CN210324496U - Fire detection system

Info

Publication number: CN210324496U
Application number: CN201921839228.4U
Authority: CN
Inventors: 张文兵; 王荔; 李夫佳; 王宏运
Original assignee: Shandong You'an Fire Fighting System Co Ltd
Current assignee: Shandong You'an Fire Fighting System Co Ltd
Priority date: 2019-10-26
Filing date: 2019-10-26
Publication date: 2020-04-14
Anticipated expiration: 2029-10-26

Abstract

The utility model discloses a fire detection system, its technical scheme main points are: including setting up the thermal imaging appearance at the factory building top, remote communication module, fire monitoring device includes fire detection device, fire control device, a first execution device, fire detection device is used for detecting whether appear the conflagration in the factory building and export corresponding fire detection signal, fire control device is coupled in fire detection device in order to receive fire detection signal and export fire control signal, a first execution device is coupled in fire control device in order to receive fire control signal and to respond to the start and close of fire control signal in order to control thermal imaging appearance. When fire detection device detected the conflagration, fire control device controls the thermal imaging system through first final controlling element and starts, and the infrared thermal image that the thermal imaging system was shot sends through remote communication module, and the staff is withdrawing to safe local back and is assisting fire control work according to received infrared thermal image for put out a fire, reduce the loss.

Description

Fire detection system

Technical Field

The utility model relates to a mill control technical field, in particular to fire detection system.

Background

With the economic development of China, enterprises and factories in various cities are gradually built, and due to the fact that power consumption is large, inflammable materials are easy to accumulate in the factories and the like, the factories are prone to fire disasters. Fires can cause disastrous direct property loss, resulting in loss of plant equipment, products, and various facilities.

Because the automation degree of the existing factory is high, the number of personnel in the factory building is small, and workers are difficult to extinguish the fire in time at the initial stage of the fire. Once the fire is serious, the personal safety is the first, and workers need to be evacuated immediately. In-process waiting for professional fire fighter to arrive, conflagration can continue to develop in the factory building, and people are difficult to know the particular case of conflagration, makes the fire fighter can not carry out the accurate condition of judging the fire, influences subsequent fire control work of putting out a fire.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a fire detection system, it gives the fire picture in the mill after the conflagration takes place, helps the work of putting out a fire to go on.

The above technical purpose of the present invention can be achieved by the following technical solutions: a fire detection system comprises a thermal imager arranged at the top of a factory building, a remote communication module used for sending images shot by the thermal imager, and a fire monitoring device, wherein the fire monitoring device comprises a fire detection device, a fire control device and a first execution device;

when the fire detection device detects a fire, the fire detection signal output by the fire detection device is at a high level, the fire monitoring device receives the fire detection signal and then controls the thermal imager to start through the first execution device, and the thermal imager shoots the fire and sends a picture through the remote communication module; otherwise, the thermal imager does not operate.

Through above-mentioned technical scheme, when the conflagration takes place, fire monitoring device control thermal imaging system starts, and the infrared thermal image picture in the factory building is shot to the thermal imaging system and sends through remote communication module, and the staff can assist fire control work according to received infrared thermal image picture after withdrawing safe place for put out a fire, the reduction loss.

Preferably, still including installing the slide rail at the factory building top, sliding connection has the dolly on the slide rail, the thermal imaging system is installed on the dolly, still be equipped with the motor that provides drive power on the dolly, fire monitoring device still includes second final controlling element, second final controlling element is coupled and stops in order to receive fire control signal and response fire control signal in order to control opening of motor in the fire control device.

Through the technical scheme, when the occupied area of a factory building is large, the thermal imager is difficult to completely shoot the situation in the whole factory building, so that the thermal imager can increase the shooting range by moving the trolley on the sliding rail; under the condition of no fire, the trolley is in an open circuit state like a thermal imager, and the use of power resources is reduced.

Preferably, the fire monitoring device further includes a wireless transmitting device and a wireless receiving device, the wireless transmitting device is coupled to the fire control device to receive the fire control signal and output a corresponding wireless signal, and the wireless receiving device is coupled to the wireless transmitting device to receive the wireless signal and control the on/off of the first executing device and the second executing device.

Through the technical scheme, the wireless receiving device, the first executing device and the second executing device are all installed on the trolley, the fire detecting device, the fire control device and the wireless transmitting device are installed on the ground, data transmission is carried out through radio, installation of a solid cable is avoided, and limitation on movement of the trolley is reduced.

Preferably, the fire detection devices are multiple, and the multiple fire detection devices are uniformly distributed along the laying direction of the slide rail.

Through the technical scheme, when the floor space of a factory building is large, the fire detection devices which are uniformly distributed can enlarge the detectable area, so that the fire detection devices which are closer to each other can find out the fire in time when the fire occurs.

Preferably, the fire detection device further comprises a plurality of ultraviolet emitting devices and a plurality of ultraviolet receiving devices, the ultraviolet emitting devices are respectively installed together with the fire detection devices, the ultraviolet emitting devices are coupled to the corresponding fire detection devices to receive the fire detection signals and send out corresponding ultraviolet signals, the ultraviolet receiving devices are installed on the trolley, and the ultraviolet receiving devices are used for receiving the ultraviolet signals and responding the ultraviolet signals to control the start and stop of the motor.

Through the technical scheme, the fire detection device which detects the occurrence of a fire also enables the corresponding ultraviolet transmitting device to vertically and upwards send out an ultraviolet signal when controlling the start of the fire control device, the ultraviolet receiving device on the trolley receives the ultraviolet signal when moving over the corresponding ultraviolet transmitting device, the ultraviolet receiving device controls the motor to stop rotating, the trolley stops moving, and the thermal imager can more clearly monitor the fire in the place close to the fire.

Preferably, the fire detection device comprises a temperature detection circuit, a temperature reference circuit and a temperature comparison circuit, wherein the temperature detection circuit is used for detecting the temperature of the nearby environment and converting the temperature into a temperature detection signal, the temperature reference circuit is used for providing a temperature reference signal corresponding to the maximum temperature in the workshop under normal conditions, and the temperature comparison circuit is coupled to the temperature detection circuit to receive the temperature detection signal and output a fire detection signal; when the temperature detection signal is greater than the temperature reference signal, the temperature comparison circuit outputs a high-level fire detection signal; otherwise, the temperature comparison circuit outputs a low-level fire detection signal.

Through the technical scheme, when a fire disaster occurs, the ambient temperature near the fire disaster rises quickly, the ambient temperature collected by the temperature detection circuit is higher than the maximum temperature in a plant under the normal condition, and the electric signal output by the temperature detection circuit is larger than the electric signal output by the temperature reference circuit, so that the temperature comparison circuit can output a high-level signal, and whether the fire disaster occurs or not is judged by detecting the ambient temperature in a feasible and low-cost detection mode.

Preferably, a self-locking device is arranged on the thermal imager and used for maintaining a power supply loop of the thermal imager in a conducting state.

Through above-mentioned technical scheme, in case the thermal imaging system is started, just can move down through self-lock device thermal imaging system all the time, the thermal imaging system no longer receives fire monitoring device's restriction, avoids appearing in the condition that the thermal imaging system was forced to close when too big and burnt out subaerial fire detection device of intensity of a fire.

To sum up, the utility model discloses the beneficial effect who contrasts in prior art does:

1. by arranging the thermal imager, the image acquisition is carried out on the fire condition in the factory building when a fire disaster occurs, and the fire extinguishing is rapidly carried out by matching with the fire fighting work, so that the loss caused by the fire disaster is reduced;

2. by arranging the fire monitoring device, the thermal imager can be started in time after a fire happens, and the thermal imager is closed at ordinary times, so that the daily consumption of electric power is reduced;

3. through setting up ultraviolet emitter and ultraviolet receiving arrangement, can control the dolly stop to remove when being close to the conflagration emergence point, make thermal imaging appearance can shoot more clear image on being close to the position of conflagration emergence point for a long time.

Drawings

FIG. 1 is a schematic structural diagram of a middle slide rail and a trolley according to an embodiment;

FIG. 2 is a schematic view of the overall structure of the cart according to the embodiment;

FIG. 3 is a schematic view showing a positional relationship between the ultraviolet ray emitting means and the ultraviolet ray receiving means in the embodiment;

FIG. 4 is a schematic structural diagram of an embodiment;

FIG. 5 is a diagram showing the electrical connections among the fire detecting device, the ultraviolet ray emitting device and the ultraviolet ray receiving device in the embodiment;

FIG. 6 is a circuit diagram showing the connection among the fire control device, the first actuator and the second actuator in the embodiment.

In the figure, 1, a thermal imaging camera; 2. a remote communication module; 3. a fire monitoring device; 31. a fire detection device; 311. a temperature detection circuit; 312. a temperature reference circuit; 313. a temperature comparison circuit; 32. a fire control device; 33. a first executing device; 34. a second execution device; 35. a wireless transmitting device; 36. a wireless receiving device; 4. a slide rail; 5. a trolley; 6. a motor; 7. an ultraviolet emitting device; 8. an ultraviolet ray receiving device; 9. a self-locking device.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, for the utility model discloses a fire detection system, including slide rail 4 of fixed mounting at the factory building top, slide rail 4 is oval. According to the area of the factory building, a plurality of slide rails 4 can be arranged, so that the slide rails 4 can cover most of places of the factory building together. The slide rail 4 is connected with a trolley 5 in a sliding way, the side wall of the trolley 5 is fixed with a motor 6, and the motor 6 is used for driving the roller of the trolley 5 to rotate. Referring to fig. 2, a thermal imaging camera 1, a remote communication module 2 and an ultraviolet receiving device 8 are arranged on the end surface of the trolley 5 facing the ground, and the ultraviolet receiving device 8 is located on one side of the thermal imaging camera 1 facing the advancing direction of the trolley 5.

Referring to fig. 4, a fire monitoring device 3 is further disposed in the factory building, and the fire monitoring device 3 includes a fire detection device 31, a fire control device 32, a first execution device 33, a second execution device 34, a wireless transmission device 35 and a wireless receiving device 36. The fire detection device 31, the fire control device 32 and the wireless transmitting device 35 are all installed at the bottom of the factory (not shown in the figure), and the first executing device 33, the second executing device 34 and the wireless receiving device 36 are all installed on the trolley 5 (not shown in the figure). Referring to fig. 3, the fire detection devices 31 are provided in plurality, the fire detection devices 31 are uniformly distributed along the installation direction of the slide rail 4, and an ultraviolet ray emitting device 7 is provided at one side of each fire detection device 31.

Referring to fig. 4, the fire detection device 31 is used for detecting whether a fire occurs in a building and outputting a corresponding fire detection signal, the fire control device 32 is coupled to the fire detection device 31 to receive the fire detection signal and output a corresponding fire control signal, the wireless transmission device 35 is coupled to the fire control device 32 to receive the fire control signal and output a corresponding wireless signal, and the wireless reception device 36 is coupled to the wireless transmission device 35 to receive the wireless signal and control the on/off of the first execution device 33 and the second execution device 34. The opening and closing of the first executing device 33 determines the opening and closing of the thermal imager 1; the self-locking device 9 is arranged on the power supply loop of the thermal imager 1, and the self-locking device 9 is used for maintaining the power supply loop of the thermal imager 1 in a conducting state. The opening and closing of the second actuator 34 determines the starting and stopping of the motor 6. The ultraviolet emitting device 7 is coupled to the corresponding fire detecting device 31 to receive the fire detecting signal and emit a corresponding ultraviolet signal, and the ultraviolet receiving device 8 is used for receiving the ultraviolet signal and controlling the start and stop of the motor 6 in response to the ultraviolet signal.

Since the operation principle of the plurality of fire detection devices 31 is the same and the operation principle of the plurality of ultraviolet emission devices 7 is the same, only one fire detection device 31 and one ultraviolet emission device 7 will be described in detail in this embodiment.

Referring to fig. 5, the fire detection device 31 includes a temperature detection circuit 311, a temperature reference circuit 312, and a temperature comparison circuit 313, and the temperature detection circuit 311 includes a thermistor RT and a resistor R4. The thermistor RT is a negative temperature coefficient thermistor.

One end of the thermistor RT is coupled to the power VCC, the other end of the thermistor RT is coupled to the resistor R4, and the other end of the resistor R4 is grounded.

When the thermistor RT is heated and the resistance becomes low, the voltage divided by the resistor R4 becomes high, and the temperature detection signal outputted from the connection point between the thermistor RT and the resistor R4 becomes a high level signal; otherwise, the temperature detection signal is a low level signal.

Referring to fig. 5, the temperature reference circuit 312 includes a resistor R1, a resistor R2, and a resistor R3.

One end of the resistor R1 is coupled to the power VCC, the other end of the resistor R1 is coupled to one end of the resistor R3, the other end of the resistor R3 is coupled to the temperature comparator circuit 313, one end of the resistor R2 is coupled to a connection point between the resistor R1 and the resistor R3, and the other end of the resistor R2 is grounded.

The resistor R1 and the resistor R3 are connected in series to divide a voltage, and the temperature reference signal inputted to the temperature comparator circuit 313 is fixed by arranging the resistors R1 and R3 in a certain ratio.

Referring to fig. 5, the temperature comparison circuit 313 is a comparator N1. Comparator N1 is model LM 311.

The same-direction input end of the comparator N1 is coupled to a connection point between the thermistor RT and the resistor R4, the reverse-direction input end of the comparator N1 is coupled to one end of the resistor R3 far away from the resistor R1, and the output end of the comparator N1 outputs a fire detection signal Iout.

When the temperature detection signal is greater than the temperature reference signal, the comparator N1 outputs a high level signal; when the temperature detection signal is smaller than the temperature reference signal, the comparator N1 outputs a low level signal.

Referring to fig. 5, the ultraviolet emitting device 7 includes an ultraviolet emitter and a transistor Q1, and the transistor Q1 is an NPN-type transistor and has a model number of 2SC 4019. The emission end of the ultraviolet emitter faces vertically to the slide rail 4.

The base of the transistor Q1 is coupled to the output terminal of the comparator N1, the collector of the transistor Q1 is coupled to the negative power supply interface of the ultraviolet emitter, the positive power supply interface of the ultraviolet emitter is coupled to the power VCC, and the emitter of the transistor Q1 is grounded.

When the fire detection signal Iout is a high level signal, the triode Q1 is conducted, and the ultraviolet emitter is electrified and emits ultraviolet rays outwards; otherwise, transistor Q1 is turned off and the ultraviolet emitter is not operating.

Referring to fig. 5, the ultraviolet receiving device 8 includes an ultraviolet receiver, which is an ultraviolet sensor in this embodiment and operates in a light guide mode, and an intermediate relay KM1, the receiving end of which is disposed vertically downward.

The positive power supply interface of the ultraviolet receiver is coupled to a power supply VCC, the negative power supply interface of the ultraviolet receiver is coupled to one end of an intermediate relay KM1, the other end of the intermediate relay KM1 is grounded, and a normally closed contact KM1-1 of the intermediate relay KM1 is connected in series in a power supply loop of the motor 6.

When the ultraviolet receiver receives ultraviolet rays, the internal resistance of the ultraviolet receiver is reduced, so that the intermediate relay KM1 is electrified to work, and the normally closed contact KM1-1 of the intermediate relay KM1 is disconnected.

Referring to fig. 6, the fire control device 32 includes an or gate a1 and a transistor Q2, the transistor Q2 being an NPN type transistor and having a model number of 2SC 4019. The or gate a1 has a plurality of input terminals and corresponds to the plurality of fire detection devices 31 one by one, respectively.

An input terminal of the or gate a1 is coupled to an output terminal of the comparator N1 in the corresponding fire detection device 31, an output terminal of the or gate a1 is coupled to a base of the transistor Q2, a collector of the transistor Q2 is coupled to the power VCC through the wireless transmitting device 35, and an emitter of the transistor Q2 is grounded.

When the comparator N1 in any fire detection device 31 outputs a high level signal, the OR gate A1 outputs a high level signal, and the triode Q2 is conducted; otherwise, the or gate a1 outputs a low signal, and the transistor Q2 is turned off.

Referring to fig. 6, the wireless transmitting device 35 is a radio transmitter.

The negative power supply interface of the radio transmitter is coupled to the collector of transistor Q1, and the positive power supply interface of the radio transmitter is coupled to the power source VCC.

When transistor Q1 is on, the radio transmitter is powered and emits a radio signal.

Referring to fig. 6, the wireless receiving device 36 is a radio receiver.

One end of the radio receiver is coupled to the power source VCC, and the other end of the radio receiver is grounded through the first actuator 33 and the second actuator 34.

When the radio receiver receives the radio signal, the radio receiver is conducted, and the first execution device 33 and the second execution device 34 are powered to work; conversely, the radio receiver is switched off, and the first actuator 33 and the second actuator 34 are deactivated.

Referring to fig. 6, the first actuator 33 is an intermediate relay KM 2.

One end of the intermediate relay KM2 is grounded, the other end of the intermediate relay KM2 is connected with the radio receiver through the second actuating device 34, and the normally open contact KM2-1 of the intermediate relay KM2 is connected in series in the power supply loop of the thermal imaging camera 1.

When the intermediate relay KM2 is electrified, the normally open contact KM2-1 of the intermediate relay KM2 is closed; on the contrary, the normally open contact KM2-1 of the intermediate relay KM2 is opened.

Referring to fig. 6, the self-locking device 9 is an intermediate relay KM 4.

One end of the intermediate relay KM4 is coupled to one end of a normally open contact KM4-1 of the intermediate relay KM4, the other end of the intermediate relay KM4 is coupled to a power supply interface of the thermal imager 1, the other end of the normally open contact KM4-1 of the intermediate relay KM4 is coupled to a power supply VCC, and the normally open contact KM2-1 of the intermediate relay KM2 is connected in parallel to two ends of the normally open contact KM4-1 of the intermediate relay KM 4.

When the normally open contact KM2-1 of the intermediate relay KM2 is closed, the intermediate relay KM4 and the thermal imager 1 are both powered on to work, and the normally open contact KM4-1 of the intermediate relay KM4 is closed, so that the intermediate relay KM4 is self-locked.

Referring to fig. 6, the second actuator 34 is an intermediate relay KM 3.

One end of the intermediate relay KM3 is coupled to one end of the radio receiver far away from the power supply VCC, the other end of the intermediate relay KM3 is coupled to one end of the intermediate relay KM2 far away from the ground, and the normally open contact KM3-1 of the intermediate relay KM3 is connected in series in the power supply loop of the motor 6.

When the intermediate relay KM3 is electrified, the normally open contact KM3-1 of the intermediate relay KM3 is closed; on the contrary, the normally open contact KM3-1 of the intermediate relay KM3 is opened.

The working principle is as follows: when a fire disaster occurs, the resistance value of the thermistor RT close to the fire disaster is reduced under the influence of high temperature, a signal Iout output by the corresponding comparator N1 is a high-level signal, the signal Iout is transmitted to the corresponding input end of the OR gate A1 on one hand, so that the output end of the OR gate A1 outputs the high-level signal, the triode Q2 is conducted, and the radio transmitter sends out a radio signal. After the radio receiver receives a radio signal, the intermediate relay KM3 and the intermediate relay KM2 are conducted, the normally open contact KM3-1 of the intermediate relay KM3 is closed, the power supply loop of the motor 6 is conducted, the motor 6 is electrified, and the trolley 5 starts to move along the slide rail 4; the normally open contact KM2-1 of the intermediate relay KM2 is closed, the thermal imager 1 is electrified, and the thermal imager 1 starts to shoot the conditions in the plant and sends the conditions out through the remote communication module 2. Meanwhile, the intermediate relay KM4 works, the normally open contact KM4-1 of the intermediate relay KM4 is closed to form self-locking, and the thermal imager 1 can be closed only by cutting off the power supply. On the other hand, the signal Iout is transmitted to the base electrode of the corresponding triode Q1, the triode Q1 is conducted, the ultraviolet transmitter vertically emits an ultraviolet signal upwards, when the trolley 5 passes along the sliding rail 4, the ultraviolet receiver on the trolley 5 receives the ultraviolet signal, the intermediate relay KM1 works, the normally closed contact KM1-1 of the intermediate relay KM1 is disconnected, the power supply loop of the motor 6 is cut off, the motor 6 does not work any more, the trolley 5 stops running, and the thermal imager 1 can conveniently conduct image acquisition near the fire occurrence place.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. A fire detection system is characterized in that: comprises a thermal imager (1) arranged at the top of a factory building, a remote communication module (2) used for sending images shot by the thermal imager (1) and a fire monitoring device (3), the fire monitoring device (3) comprises a fire detection device (31), a fire control device (32) and a first execution device (33), the fire detection device (31) is arranged at the bottom in the factory building, the fire detection device (31) is used for detecting whether a fire disaster occurs in the factory building and outputting a corresponding fire detection signal, the fire control device (32) is coupled to the fire detection device (31) to receive the fire detection signal and output a corresponding fire control signal, the first execution device (33) is coupled with the fire control device (32) to receive the fire control signal and respond to the fire control signal to control the on-off of the thermal imaging camera (1);

when a fire is detected by the fire detection device (31), a fire detection signal output by the fire detection device (31) is at a high level, the fire monitoring device (3) receives the fire detection signal and then controls the thermal imager (1) to start through the first execution device (33), and the thermal imager (1) shoots the fire and sends a picture through the remote communication module (2); on the contrary, the thermal imaging camera (1) does not work.

2. A fire detection system as claimed in claim 1, wherein: still including installing slide rail (4) at the factory building top, sliding connection has dolly (5) on slide rail (4), install on dolly (5) thermal imaging system (1), still be equipped with motor (6) that provide drive power on dolly (5), fire monitoring device (3) still include second final controlling element (34), second final controlling element (34) are coupled and are stopped in order receiving conflagration control signal and response conflagration control signal with control motor (6) opening in order to receive conflagration control signal (32).

3. A fire detection system as claimed in claim 2, wherein: the fire monitoring device (3) further comprises a wireless transmitting device (35) and a wireless receiving device (36), the wireless transmitting device (35) is coupled to the fire control device (32) to receive the fire control signal and output a corresponding wireless signal, and the wireless receiving device (36) is coupled to the wireless transmitting device (35) to receive the wireless signal and control the on and off of the first actuating device (33) and the second actuating device (34).

4. A fire detection system as claimed in claim 2, wherein: the fire detection devices (31) are multiple, and the fire detection devices (31) are uniformly distributed along the laying direction of the slide rail (4).

5. A fire detection system as claimed in claim 4, wherein: the fire detection device is characterized by further comprising a plurality of ultraviolet emitting devices (7) and ultraviolet receiving devices (8), the ultraviolet emitting devices (7) are installed together with the fire detection devices (31) respectively, the ultraviolet emitting devices (7) are coupled to the corresponding fire detection devices (31) to receive fire detection signals and send out corresponding ultraviolet signals, the ultraviolet receiving devices (8) are installed on the trolley (5), and the ultraviolet receiving devices (8) are used for receiving the ultraviolet signals and responding to the ultraviolet signals to control starting and stopping of the motor (6).

6. A fire detection system as claimed in claim 1, wherein: the fire detection device (31) comprises a temperature detection circuit (311), a temperature reference circuit (312) and a temperature comparison circuit (313), wherein the temperature detection circuit (311) is used for detecting the temperature of the nearby environment and converting the temperature into a temperature detection signal, the temperature reference circuit (312) is used for providing a temperature reference signal corresponding to the maximum temperature in the normal condition in the factory building, and the temperature comparison circuit (313) is coupled to the temperature detection circuit (311) to receive the temperature detection signal and output a fire detection signal; when the temperature detection signal is greater than the temperature reference signal, the temperature comparison circuit (313) outputs a high-level fire detection signal; conversely, the temperature comparison circuit (313) outputs a low level fire detection signal.

7. A fire detection system as claimed in claim 1, wherein: the thermal imager (1) is provided with a self-locking device (9), and the self-locking device (9) is used for maintaining a power supply loop of the thermal imager (1) in a conducting state.