CN214096166U - Building fire detection system based on wireless multi-sensor information fusion - Google Patents

Abstract

The utility model provides a building fire detection system based on wireless multisensor information fusion, including radio frequency chip, coordinator, host computer, siren and data processor, lay a plurality of determine module at the equidistance in the building, determine module and radio frequency chip electric connection, the radio frequency chip with coordinator wireless communication connects, be provided with host system in the data processor, host system is connected with coordinator control circuit, first wireless communication module, GSM module, alarm module and power module, the data processor warp the first wireless communication module with the host computer carries out wireless communication, the data processor warp alarm module with the siren carries out electric connection, power module is that the data processor carries out the power supply effect; the utility model discloses simple structure, the simple operation, what can be accurate detects and discerns conflagration characteristic parameter.

Description

Building fire detection system based on wireless multi-sensor information fusion

Technical Field

The utility model relates to a fire detection technical field, especially a building fire detection system based on wireless multisensor information fusion.

Background

The occurrence of fire is often catastrophic, not only causing property loss, but also endangering life safety. Conventional fire detectors have become relatively mature and widely used, but annual fires still cause significant economic losses and mass casualties^[1]. The fire detector in the market currently uses a single fire characteristic parameter as a detection object and uses the single fire characteristic parameter as a judgment data, and a detection method based on single fire information can only collect partial information of the fire, is easily interfered by factors such as environment and the like, often causes misjudgment or misjudgment of the fire, and is only suitable for specific fire types and specific places, so that various fire characteristic parameters need to be detected by using various sensors to accurately detect and identify the fire when a fire detection system is developed, and then fire data fusion is performed.

In the prior art, the fire detector has the defects of single detection information, high false alarm and missing report rate, complex wiring and the like, and the effective operation of the system can be ensured only in the range of the arranged sensor for detecting the occurrence of the fire. Therefore, the related art system is not likely to respond appropriately to a fire (gas leak) occurring at a place distant from the installation point of the system. In the case of an indoor gas leak, the related system cannot recognize the gas leak.

Disclosure of Invention

In view of this, the utility model aims at providing a can be accurate detect the building fire detection system based on wireless multisensor information fusion that discerns the conflagration characteristic parameter.

The utility model discloses a following method realizes: the utility model provides a building fire detecting system based on wireless multisensor information fusion, includes radio frequency chip, coordinator, host computer, siren and data processor, its characterized in that: the intelligent detection system comprises a plurality of detection assemblies, wherein the detection assemblies are arranged in a building at equal intervals and are electrically connected with a radio frequency chip, the radio frequency chip is in wireless communication with a coordinator, a main control module is arranged in a data processor and is connected with a coordinator control circuit, a first wireless communication module, a GSM module, an alarm module and a power module, the data processor is in wireless communication with an upper computer through the first wireless communication module, the data processor is in electrical connection with the alarm through the alarm module, and the power module is used for supplying power to the data processor.

Furthermore, the detection assembly comprises a smoke detection sensor, a temperature detection sensor and a CO detection sensor, and the detection assemblies are arranged in the building at equal intervals and are installed every four meters.

Further, the radio frequency chip is connected with temperature and humidity detection circuit, second wireless communication module, smog collection and conditioning module, power supply circuit and CO detection circuit, the radio frequency chip warp second wireless communication module carries out wireless communication with smog detection sensor, temperature detection sensor and CO detection sensor, the radio frequency chip warp second wireless communication module with the coordinator carries out wireless communication, power supply circuit can step down 5V voltage conversion of output to 3.3V voltage.

Further, the radio frequency chip includes a U3 chip, a resistor R1, a capacitor C25, a capacitor C27, a crystal oscillator Y1, a capacitor C26, a capacitor C28, a capacitor C29, a crystal oscillator Y2, a capacitor C20, a capacitor C22, a capacitor C23, a capacitor C24, a fire line L7, a capacitor C19, a capacitor C21, a fire line L21, a capacitor C21, a fire line L21, a resistor R21 and a capacitor C21, the pin No. 41 of the U21 chip is grounded, the pin No. 30 of the U21 chip is connected to one end of the resistor R21, the other end of the resistor R21 is grounded, the pin No. 40 of the U21 chip is connected to one end of the capacitor C21, the other end of the capacitor C21 is connected to the ground, one end of the capacitor Y21 is connected to one end of the capacitor C21, one end of the capacitor Y21 is connected to the capacitor C21, one end of the capacitor Y21 is connected to the capacitor C21, a pin 22 of the U3 chip is connected to the other end of the crystal oscillator Y1, the other end of the crystal oscillator Y1 is connected to one end of the capacitor C26, the other end of the capacitor C26 is grounded, a pin 33 of the U3 chip is connected to one end of the crystal oscillator Y2, one end of the crystal oscillator Y2 is connected to one end of the capacitor C28, the other end of the capacitor C28 is grounded, a pin 32 of the U3 chip is connected to the other end of the crystal oscillator Y2, the other end of the crystal oscillator Y2 is connected to one end of the capacitor C29, and the other end of the capacitor C29 is grounded; a pin 26 of the U3 chip is connected to one end of a capacitor C19, the other end of the capacitor C19 is connected in series with one end of the capacitor C20, one end of a live wire L7 and one end of a live wire L5, the other end of the capacitor C20 is grounded, the other end of the live wire L7 is connected in series with one end of the capacitor C24 and one end of a capacitor C22, the other end of the capacitor C24 is connected in series with one end of the capacitor C23 and then connected to an electromotive force E1, the other end of the capacitor C22 is connected in parallel with the other end of the capacitor C23 and then grounded, the other end of the live wire L5 is connected in series with one end of the capacitor C18, one end of the capacitor C21 and one end of the live wire L6, and the other end of the live wire L6 is grounded; the No. 1 pin, the No. 2 pin, the No. 3 pin and the No. 4 pin of the U3 chip are grounded after being connected in series, the No. 20 pin of the U3 chip is connected in series with one end of the resistor R2 and one end of the capacitor C30, the other end of the capacitor C30 is grounded, and the other end of the resistor R2 is connected with a 3.3V port; the No. 39 pin of the U3 chip is connected with one end of the capacitor C10, the other end of the capacitor C10 is grounded, the No. 39 pin, the No. 10 pin, the No. 21 pin, the No. 24 pin, the No. 27 pin, the No. 28 pin, the No. 29 pin and the No. 31 pin of the U3 chip are connected in series and then connected with one end of the live wire L4, the other end of the live wire L4 is connected with the 3.3V port, the No. 10 pin of the U3 chip is connected with one end of the capacitor C11, the other end of the capacitor C11 is grounded, the No. 21 pin of the U3 chip is connected with one end of the capacitor C12, the other end of the capacitor C12 is grounded, the No. 24 pin of the U3 chip is connected with one end of the capacitor C13, the other end of the capacitor C13 is grounded, the No. 27 pin, the No. 28 pin and the No. 29 pin of the U3 chip are connected with one end of the capacitor C14 and one end of the capacitor C15, the other end of the capacitor C14 and the other end of the capacitor C15 are grounded, a No. 31 pin of the U3 chip is connected with one end of the capacitor C16, the other end of the capacitor C16 is grounded, one end of the capacitor C16 is connected with one end of the capacitor C17, and the other end of the capacitor C17 is grounded; the No. 36 pin of the U3 chip is connected with an SHT-CLK port, the No. 35 pin of the U3 chip is connected with an SHT-DATA port, the No. 9 pin of the U3 chip is connected with a DOUT-smile port, the No. 8 pin of the U3 chip is connected with an AOUT-smile port, the No. 12 pin of the U3 chip is connected with a VIN port, and the No. 13 pin of the U3 chip is connected with a VSSA port.

Furthermore, the temperature and humidity detection circuit comprises a U6 chip, a resistor R37, a capacitor C68, a resistor R36 and a resistor R35, a pin 1 of the U6 chip is connected with one end of the resistor R36, the other end of the resistor R36 is connected with the SHT-CLK port, a pin 2 of the U6 chip is connected with one end of the resistor R37 and one end of the capacitor C68 in series and then connected with a 3.3V port, the other end of the capacitor C68 is connected with a pin 3 of the U6 chip in series and then connected with the ground, a pin 4 of the U6 chip is connected with the other end of the resistor R37 in series and then connected with one end of the resistor R35, and the other end of the resistor R35 is connected with the SHT-DATA port.

Further, the smoke collecting and conditioning module comprises an MQ-2 gas sensor, a resistor R38, a resistor R39, a capacitor C66, a voltage follower LM, a capacitor C68, a resistor R42, a resistor R43, a diode D1, a diode D2, a resistor RP, an operational amplifier TL084, a resistor R40, an LED light emitting diode, a capacitor C67, a resistor R41, a diode D3 and a diode D4, wherein a pin No. 1, a pin No. 2 and a pin No. 3 of the MQ-2 gas sensor are connected in series and then connected with a 5V port, a pin No. 5 of the MQ-2 gas sensor is connected with one end of the resistor R38, the other end of the resistor R38 is grounded, a pin No. 4 and a pin No. 6 of the MQ-2 gas sensor are connected in series and then connected with one end of the resistor R39, the other end of the resistor R39 is grounded, one end of the resistor R39 is connected with one end of the capacitor C66, the other end of the capacitor C66 is grounded, one end of the capacitor C66 is connected with a pin No. 5 of the voltage follower LM, a pin No. 6 of the voltage follower LM is connected with a pin No. 7 of the voltage follower LM in series and then is connected with one end of the capacitor C68, the other end of the capacitor C68 is grounded, one end of the capacitor C68 is connected with one end of the resistor R42 and one end of the resistor R43 in series, the other end of the resistor R42 is connected with the anode of the diode D1, the cathode of the diode D1 is connected with the other end of the resistor R43 in series and then is connected with the anode of the diode D2, the anode of the diode D2 is connected with the AOUT-smoke port, the cathode of the diode D2 is connected with the 3.3V port, a pin No. 5 of the voltage follower LM is connected with a pin No. 2 of the operational amplifier TL084, a pin No. 3 of the operational amplifier TL084 is connected with the resistor RP, one end of the resistor RP is connected with the 5V port, and the other end of the resistor RP is grounded, the pin 4 of the operational amplifier TL084 is grounded, the pin 11 of the operational amplifier TL084 is connected in series with one end of the resistor R40 and then connected to the 5V port, the other end of the resistor R40 is connected to the anode of the LED light emitting diode, the cathode of the LED light emitting diode is connected in series with one end of the capacitor C67, one end of the resistor R41 and the pin 1 of the operational amplifier TL084, the other end of the capacitor C67 is grounded, the other end of the resistor R41 is connected in series with the cathode of the diode D3 and the anode of the diode D4 and then connected to the DOUT-smike port, the cathode of the diode D4 is connected to the 3.3V port, and the anode of the diode D3 is grounded.

Further, the power circuit includes a U2 chip, a U1 chip, a hot wire L1, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a hot wire L4, a capacitor C4 and a capacitor C4, a pin 1 of the U4 chip is connected to one end of the hot wire L4 and one end of the capacitor C4, the other end of the hot wire L4 is connected to a pin 3 of the U4 chip, a pin 1 of the U4 chip is connected to one end of the capacitor C4 and then connected to the VIN port, a pin 2 of the U4 chip is connected to the other end of the capacitor C4 in series and then grounded, one end of the capacitor C4 is connected to one end of the capacitor C4 and then connected to the 5V port, the other end of the capacitor C4 and the other end of the capacitor C4 are both connected to the pin 2 of the U4, and the other end of the U4 is connected to the pin 3 of the capacitor C4 and then connected to the ground, capacitance C4 one end with capacitance C5 one end is connected, the capacitance C5 other end with live wire L3 one end is connected the back ground connection, capacitance C5 one end with live wire L2 one end is connected, the live wire L2 other end with capacitance C6 one end is connected, the live wire L3 other end with the capacitance C6 other end is connected, capacitance C6, capacitance C7 and capacitance C8 set up in parallel, capacitance C6 one end is connected with the V3.3A port, the capacitance C6 other end with the VSSA port is connected.

Further, the fixing device comprises a first hollow supporting plate, second hollow supporting plates are arranged at the left end and the right end of the upper surface of the first hollow supporting plate respectively, the first hollow supporting plate and the second hollow supporting plate are perpendicular to each other and communicated, a fixing plate is arranged on the upper surface of the second hollow supporting plate, the first hollow supporting plate, the second hollow supporting plate and the fixing plate are matched to form a placing area for placing the data processor, a first clamping mechanism for clamping the data processor is embedded in the second hollow supporting plate, a second clamping mechanism for clamping the data processor is arranged on the fixing plate, an exhaust fan is fixedly arranged in the second hollow supporting plate, a plurality of first heat dissipation holes are formed in the second hollow supporting plate at equal intervals, an opening is formed in the upper surface of the first hollow supporting plate, and a stretching plate is embedded in the opening, and a plurality of second heat dissipation holes are formed in the stretching plate at equal intervals.

Further, the first clamping mechanism and the second clamping mechanism have the same structure, the first clamping mechanism comprises a first moving plate and a second moving plate, the first moving plate and the second moving plate are respectively arranged at the front end and the rear end of the outer side of the second hollow supporting plate, the upper end and the lower end of the left side surface of the first moving plate and the second moving plate are both provided with connecting rods, the tail end of the connecting rod penetrates through the second hollow supporting plate to extend into the placing area, a pressing block used for limiting and fixing the data processor is arranged on the tail end face of the connecting rod, a plurality of third heat dissipation holes are equidistantly formed in the pressing block, a return spring is sleeved on the connecting rod, the reset spring is located between the pressing block and the second hollow supporting plate, and a stretching handle is arranged between the right side face of the first moving plate and the right side face of the second moving plate.

The beneficial effects of the utility model reside in that: the utility model discloses an added detection assembly for through detection assembly and radio frequency chip's wireless connection communication, can be with the signal transmission that detection assembly detected to radio frequency chip and then through the effect of coordinator and data processor, can report to the police when handling the signal transmission that detects to the host computer; the smoke detection sensor, the temperature detection sensor and the CO detection sensor are added, so that smoke, gas and heat in the fire can be detected under the action of the smoke detection sensor, the temperature detection sensor and the CO detection sensor, the fire detection device is suitable for working in severe and special environments, and networking, wireless and intelligentization of fire detection can be realized through wireless sensor network and data fusion; the fixing device is added, so that the data processor can be better fixed in a building under the action of the fixing device, the first clamping mechanism and the second clamping mechanism are added in the device, and the data processors of different specifications can be clamped and fixed, so that the data processors can be better fixed, the placement is more stable, and the device is suitable for the installation of the data processors of different specifications; the exhaust fan, the first heat dissipation hole, the second heat dissipation hole and the third heat dissipation hole are added in the device, after the data processor is placed, the data processor in work can be effectively dissipated through the effect of the exhaust fan, so that the air is more circulated, the heat dissipation effect on the data processor is good, the use effect of the data processor is good, the service life of the data processor can be prolonged, and the work efficiency of workers is improved; the utility model discloses simple structure, the simple operation to carry out multisensor data fusion through fuzzy neural network, the system interference killing feature is strong, the detection precision is high, has realized detection, the warning of conflagration, has higher practical value.

Drawings

Fig. 1 is a schematic block diagram of the circuit of the present invention.

Fig. 2 is a schematic circuit block diagram of the rf chip.

Fig. 3 is a circuit diagram of the second wireless communication module.

Fig. 4 is a circuit diagram of the temperature and humidity detection circuit.

Figure 5 is a circuit diagram of a smoke collection conditioning module.

Fig. 6 is a circuit diagram of the power supply circuit.

Fig. 7 is a schematic structural view of the fixing device.

Fig. 8 is a sectional view in the direction of a-a.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

Referring to fig. 1, the present invention provides an embodiment: the utility model provides a building fire detection system based on wireless multisensor information fusion, includes radio frequency chip, coordinator, host computer, siren and data processor, and a plurality of determine module are laid to the equidistance in the building, determine module and radio frequency chip electric connection, the radio frequency chip with coordinator wireless communication connects, be provided with host system in the data processor, host system is connected with coordinator control circuit, first wireless communication module, GSM module, alarm module and power module, the data processor warp first wireless communication module with the host computer carries out wireless communication, the data processor warp alarm module with the siren carries out electric connection, power module does the data processor carries out the power supply effect. When the detection assembly detects a signal, the signal is transmitted into the radio frequency chip, then the signal is transmitted into the coordinator through the radio frequency chip and the wireless communication of the coordinator, then the coordinator transmits the data to the data processor for data fusion, the data processor can make a decision finally, and when a fire disaster is judged to occur, the data processor can send the signal to the alarm and the upper computer, and alarm information is sent to related personnel and departments while alarming is started.

As shown in fig. 1 and fig. 2, in an embodiment of the present invention, the detecting component includes a smoke detecting sensor, a temperature detecting sensor and a CO detecting sensor, and the detecting components are installed every four meters in the building at equal distances. The smoke, heat and temperature and humidity during fire can be detected under the action of the smoke detection sensor, the temperature detection sensor and the CO detection sensor.

Please continue to refer to fig. 1 and fig. 2, in an embodiment of the present invention, the rf chip is connected to a temperature and humidity detecting circuit, a second wireless communication module, a smoke collecting and conditioning module, a power circuit and a CO detecting circuit, the rf chip is in wireless communication with the smoke detecting sensor, the temperature detecting sensor and the CO detecting sensor through the second wireless communication module, the rf chip is in wireless communication with the coordinator through the second wireless communication module, and the power circuit can convert the output 5V voltage and reduce the voltage to 3.3V voltage. The smoke detection sensor, the temperature detection sensor and the CO detection sensor can be controlled and signal transmission can be carried out through the temperature and humidity detection circuit, the smoke collection and conditioning module and the CO detection circuit, and the power supply circuit can carry out charging and discharging effects on the radio frequency chip.

Referring to fig. 3, in an embodiment of the present invention, the rf chip includes a U3 chip, a resistor R1, a capacitor C25, a capacitor C27, a crystal oscillator Y1, a capacitor C26, a capacitor C28, a capacitor C29, a crystal oscillator Y2, a capacitor C20, a capacitor C22, a capacitor C23, a capacitor C24, a fire line L7, a capacitor C19, a capacitor C21, a capacitor C18, a fire line L6, a capacitor C6, a fire line L6, a resistor R6, and a capacitor C6, the pin No. 41 of the U6 chip is grounded, the pin No. 30 of the U6 chip is connected to one end of the resistor R6, the other end of the resistor R6 is grounded, one end of the terminal of the U6 is connected to one end of the capacitor Y6, and the other end of the capacitor C6 is connected to one end of the capacitor C6, the other end of the capacitor C27 is grounded, a pin No. 22 of the U3 chip is connected with the other end of the crystal oscillator Y1, the other end of the crystal oscillator Y1 is connected with one end of the capacitor C26, the other end of the capacitor C26 is grounded, a pin No. 33 of the U3 chip is connected with one end of the crystal oscillator Y2, one end of the crystal oscillator Y2 is connected with one end of the capacitor C28, the other end of the capacitor C28 is grounded, a pin No. 32 of the U3 chip is connected with the other end of the crystal oscillator Y2, the other end of the crystal oscillator Y2 is connected with one end of the capacitor C29, and the other end of the capacitor C29 is grounded; a pin 26 of the U3 chip is connected to one end of a capacitor C19, the other end of the capacitor C19 is connected in series with one end of the capacitor C20, one end of a live wire L7 and one end of a live wire L5, the other end of the capacitor C20 is grounded, the other end of the live wire L7 is connected in series with one end of the capacitor C24 and one end of a capacitor C22, the other end of the capacitor C24 is connected in series with one end of the capacitor C23 and then connected to an electromotive force E1, the other end of the capacitor C22 is connected in parallel with the other end of the capacitor C23 and then grounded, the other end of the live wire L5 is connected in series with one end of the capacitor C18, one end of the capacitor C21 and one end of the live wire L6, and the other end of the live wire L6 is grounded; the No. 1 pin, the No. 2 pin, the No. 3 pin and the No. 4 pin of the U3 chip are grounded after being connected in series, the No. 20 pin of the U3 chip is connected in series with one end of the resistor R2 and one end of the capacitor C30, the other end of the capacitor C30 is grounded, and the other end of the resistor R2 is connected with a 3.3V port; the No. 39 pin of the U3 chip is connected with one end of the capacitor C10, the other end of the capacitor C10 is grounded, the No. 39 pin, the No. 10 pin, the No. 21 pin, the No. 24 pin, the No. 27 pin, the No. 28 pin, the No. 29 pin and the No. 31 pin of the U3 chip are connected in series and then connected with one end of the live wire L4, the other end of the live wire L4 is connected with the 3.3V port, the No. 10 pin of the U3 chip is connected with one end of the capacitor C11, the other end of the capacitor C11 is grounded, the No. 21 pin of the U3 chip is connected with one end of the capacitor C12, the other end of the capacitor C12 is grounded, the No. 24 pin of the U3 chip is connected with one end of the capacitor C13, the other end of the capacitor C13 is grounded, the No. 27 pin, the No. 28 pin and the No. 29 pin of the U3 chip are connected with one end of the capacitor C14 and one end of the capacitor C15, the other end of the capacitor C14 and the other end of the capacitor C15 are grounded, a No. 31 pin of the U3 chip is connected with one end of the capacitor C16, the other end of the capacitor C16 is grounded, one end of the capacitor C16 is connected with one end of the capacitor C17, and the other end of the capacitor C17 is grounded; the No. 36 pin of the U3 chip is connected with an SHT-CLK port, the No. 35 pin of the U3 chip is connected with an SHT-DATA port, the No. 9 pin of the U3 chip is connected with a DOUT-smile port, the No. 8 pin of the U3 chip is connected with an AOUT-smile port, the No. 12 pin of the U3 chip is connected with a VIN port, and the No. 13 pin of the U3 chip is connected with a VSSA port. The data collected by the smoke detection sensor, the temperature detection sensor and the CO detection sensor can be sent to the coordinator through the wireless radio frequency module of the radio frequency chip after being subjected to AD conversion through the second wireless communication module, the U3 chip adopts the CC2530 radio frequency chip, the core is the enhanced 8051CPU, and a complete ZigBee solution is provided by combining the excellent performance of the RF transceiver, so that the peripheral resources are rich, and a strong network node can be established at very low material cost.

Referring to fig. 4, in an embodiment of the present invention, the temperature and humidity detecting circuit includes a U6 chip, a resistor R37, a capacitor C68, a resistor R36, and a resistor R35, a pin 1 of the U6 chip is connected to one end of the resistor R36, the other end of the resistor R36 is connected to the SHT-CLK port, a pin 2 of the U6 chip is connected to one end of the resistor R37 and one end of the capacitor C68 in series and then connected to the 3.3V port, the other end of the capacitor C68 is connected to the pin 3 of the U6 chip in series and then grounded, a pin 4 of the U6 chip is connected to the other end of the resistor R37 in series and then connected to one end of the resistor R35, and the other end of the resistor R35 is connected to the SHT-DATA port. The temperature and humidity detection sensor selects an SHT-75 sensor which is low in power consumption, fast in response and high in stability, the temperature detection range is-40 ℃ to 123.8 ℃, the humidity detection range is 0-100% RH, the SHT-75 resolution ratio is default to 14 bits (temperature) and 12 bits (humidity), the detection precision is +/-1.8% RH (humidity) and +/-0.3 ℃ and is communicated with a wireless communication CC2530 controller through a two-wire serial port, the SHT _ DATA is a bidirectional serial DATA end of a three-state structure and used for reading sensor DATA, the SHT-75 sensor is effective when an SHT _ SCK clock rises, and the state can be changed after the SHT _ SCK clock falls. For stable DATA signal transmission, a 10 k Ω pull-up resistor is connected to raise the SHT _ DATA terminal to high level. The range of the supply voltage of the SHT-75 is 2.4-5.5V, the typical working voltage of the system is 3.3V, the typical working voltage is consistent with the working voltage of the CC2530, the average power consumption of the SHT-75 is about 150 mu W, and the U6 chip can be an SHT-75 sensor.

Referring to fig. 5, in an embodiment of the present invention, the smoke collecting and conditioning module includes an MQ-2 gas sensor, a resistor R38, a resistor R39, a capacitor C66, a voltage follower LM, a capacitor C68, a resistor R42, a resistor R43, a diode D1, a diode D2, a resistor RP, an operational amplifier TL084, a resistor R40, an LED light emitting diode, a capacitor C67, a resistor R41, a diode D3, and a diode D4, wherein a pin 1, a pin 2, and a pin 3 of the MQ-2 gas sensor are connected in series and then connected to a 5V port, a pin 5 of the MQ-2 gas sensor is connected to one end of the resistor R38, the other end of the resistor R38 is grounded, a pin 4 and a pin 6 of the MQ-2 gas sensor are connected in series and then connected to one end of the resistor R39, the other end of the resistor R39 is grounded, one end of the resistor R39 is connected to one end of the capacitor C66, the other end of the capacitor C66 is grounded, one end of the capacitor C66 is connected with the No. 5 pin of the voltage follower LM, the No. 6 pin of the voltage follower LM is connected with the No. 7 pin in series and then is connected with one end of the capacitor C68, the other end of the capacitor C68 is grounded, one end of the capacitor C68 is connected with one end of the resistor R42 and one end of the resistor R43 in series, the other end of the resistor R42 is connected with the anode of the diode D1, the cathode of the diode D1 is connected with the other end of the resistor R43 in series and then is connected with the anode of the diode D2, the anode of the diode D2 is connected with the AOUT-smoke port, the cathode of the diode D2 is connected with the 3.3V port, the No. 5 pin of the voltage follower LM is connected with the No. 2 pin of the operational amplifier TL084, the No. 3 pin of the operational amplifier TL084 is connected with the resistor RP, and one end of the resistor RP is connected with the 5V port, the other end of the resistor RP is grounded, a pin 4 of the operational amplifier TL084 is grounded, a pin 11 of the operational amplifier TL084 is connected with one end of the resistor R40 in series and then connected with a 5V port, the other end of the resistor R40 is connected with the anode of the LED light-emitting diode, the cathode of the LED light-emitting diode is connected with one end of the capacitor C67, one end of the resistor R41 and the pin 1 of the operational amplifier TL084 in series, the other end of the capacitor C67 is grounded, the other end of the resistor R41 is connected with the cathode of the diode D3 and the anode of the diode D4 in series and then connected with the DOUT-smile port, the cathode of the diode D4 is connected with a 3.3V port, and the anode of the diode D3 is grounded. The smoke detection sensor adopts MQ-2 with high sensitivity to smoke, liquefied gas, alkanes and the like. The MQ-2 has the advantages of fast response, wide detection range, simple driving circuit and the like, but the output signal of the MQ-2 analog quantity is weaker and has high-frequency clutter, and the filtering processing and the amplification processing are required to be carried out by a processing circuit and then are sent to the CC2530 controller for analog-to-digital conversion. In order to reduce the impact of cold and electricity on the heating wire, the MQ-2 acquisition conditioning circuit is connected with a resistor R38 in series in the heating loop of the sensor. The direct current signal output by the No. 4 pin of the MQ-2 changes along with the smoke concentration, the direct current signal is converted into an analog voltage signal through R39, and the analog voltage signal is simultaneously added to the pin 2 of the operational amplifier TL084 and the pin 5 of the voltage follower LM, wherein the operational amplifier TL084 is a comparator of the four-channel operational amplifier TL084, and the voltage follower LM is a voltage follower. The resistor Rp forms a threshold voltage of the comparator, the action threshold value of the MQ-2 module can be adjusted by adjusting the resistor Rp, when the voltage output by the MQ-2 is lower than the threshold voltage, the comparator outputs high level, and the LED is extinguished; when the voltage output by the MQ-2 is higher than the threshold voltage, the comparator outputs a low level, the LED lights up, and the interruption of the radio frequency chip is triggered; and the signal is increased and isolated by a voltage follower with the gain of 1 and then is sent to an ADC pin of a radio frequency chip, and the smoke acquisition conditioning module is connected with the smoke detection sensor for detection.

Referring to fig. 6, in an embodiment of the present invention, the power circuit includes a U2 chip, a U1 chip, a fire line L1, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a capacitor C5, a fire line L3, a capacitor C6, a capacitor C7, and a capacitor C8, a pin 1 of the U2 chip is connected to one end of the fire line L2 and one end of the capacitor C2, the other end of the fire line L2 is connected to a pin 3 of the U2 chip, a pin 1 of the U2 chip is connected to one end of the capacitor C2 and then connected to the VIN port, a pin 2 of the U2 chip is connected to the other end of the capacitor C2 in series and then grounded, one end of the capacitor C2 is connected to one end of the capacitor C2 and then connected to the 5V port, the other end of the capacitor C2 and the other end of the pin 3 of the U2 are connected to one end of the capacitor C2, the other end of the capacitor C4 is connected with the No. 2 pin of the U2 chip and then grounded, one end of the capacitor C4 is connected with one end of the capacitor C5, the other end of the capacitor C5 is connected with one end of the live wire L3 and then grounded, one end of the capacitor C5 is connected with one end of the live wire L2, the other end of the live wire L2 is connected with one end of the capacitor C6, the other end of the live wire L3 is connected with the other end of the capacitor C6, the capacitor C6, the capacitor C7 and the capacitor C8 are arranged in parallel, one end of the capacitor C6 is connected with the V3.3A port, and the other end of the capacitor C6 is connected with the VSSA port. The design of the system power supply voltage stabilizing circuit adopts a DC12V lithium battery for power supply, the voltage is reduced to 5V through a voltage stabilizing chip LM7805, and the 5V voltage output by the LM7805 is reduced to 3.3V through a voltage stabilizing chip AMS 1117-3.3. In order to improve the performance of the power supply module, a high-frequency filter capacitor and a large-capacity electrolytic capacitor are connected to the periphery of a voltage stabilizing chip, the U1 chip can be a voltage stabilizing chip LM7805, and the U2 chip can be a voltage stabilizing chip AMS 1117-3.3.

Referring to fig. 7 and 8, in an embodiment of the present invention, the fixing device 1 for fixing a data processor is further included, the fixing device 1 includes a first hollow supporting plate 11, the left and right ends of the upper surface of the first hollow supporting plate 11 are respectively provided with a second hollow supporting plate 12, the first hollow supporting plate 11 and the second hollow supporting plate 12 are perpendicular to each other and are communicated with each other, the upper surface of the second hollow supporting plate 12 is provided with a fixing plate 13, the first hollow supporting plate 11, the second hollow supporting plate 12 and the fixing plate 13 are matched to form a placing area 14 for placing the data processor, the second hollow supporting plate 12 is embedded with a first clamping mechanism 2 for clamping the data processor, the fixing plate 13 is provided with a second clamping mechanism 3 for clamping the data processor, the second hollow supporting plate 12 is internally and fixedly provided with an exhaust fan 15, a plurality of first heat dissipation holes 16 are formed in the second hollow supporting plate 12 at equal intervals, an opening is formed in the upper surface of the first hollow supporting plate 12, a stretching plate 17 is embedded in the opening, and a plurality of second heat dissipation holes 18 are formed in the stretching plate 17 at equal intervals. Make the staff put into place the district 14 with data processor in, carry out spacing fixed through first clamping mechanism 2 and second clamping mechanism 3 to data processor, be convenient for better put into the building, and the installation of the data processor of adaptable different specifications under the effect through first clamping mechanism 2 and second clamping mechanism 3, the installation back, through opening exhaust fan 15, can dispel the heat to data processor when using through the effect of first louvre 16 and second louvre 18.

Referring to fig. 7 and 8, in an embodiment of the present invention, the first clamping mechanism 2 and the second clamping mechanism 3 have the same structure, the first clamping mechanism 2 includes a first moving plate 21 and a second moving plate 22, the first moving plate 21 and the second moving plate 22 are respectively disposed at the front end and the rear end of the outer side of the second hollow supporting plate 12, the upper end and the lower end of the left side of the first moving plate 21 and the left side of the second moving plate 22 are both provided with a connecting rod 23, the end of the connecting rod 23 passes through the second hollow supporting plate 12 and extends into the placing area 14, the end surface of the connecting rod 23 is provided with a pressing block 24 for limiting and fixing the data processor, the pressing block 24 is equidistantly provided with a plurality of third heat dissipation holes 25, the connecting rod 23 is sleeved with a return spring 26, the return spring 26 is located between the pressing block 24 and the second hollow supporting plate 12, a stretching handle 27 is arranged between the right sides of the first moving plate 21 and the second moving plate 22. Make the staff through upwards tensile handle 27, can drive connecting rod 23 outwards removal, connecting rod 23 upwards removal can drive compact heap 24 upwards removal, the staff of being convenient for puts into data processor and places district 14 in, data processor puts into the back, the staff loosens tensile handle 27, effect compact heap 24 through reset spring 26 is inside to reply the effect, thereby the realization is tight to data processor's clamp, be convenient for fix data processor is spacing in placing district 14, thereby can adapt to the data processor installation of different specifications fixed.

The utility model provides a data processor, coordinator, radio frequency chip, alarm, wireless communication module, CO sensor, temperature and humidity sensor and smog detection sensor are prior art, and the technical personnel in the field have been clearly understood, and detailed description is not carried out here, data processor's model can be STM32F 407's main control chip, the model of coordinator can be the zigBee coordinator, and the siren can be the audible-visual annunciator among the prior art, and the model of radio frequency chip can be CC2530 radio frequency chip kernel and be enhancement mode 8051CPU, and first wireless communication module and second wireless communication module can be zigBee communication module, and CO sensor model can be ZCQDH-001CO, but not only be limited to this, just the utility model discloses protect be based on wireless multisensor information fusion's building fire detection system's structural feature.

In a word, the utility model discloses a wireless connection communication of detection subassembly and radio frequency chip can be with the signal transmission that detection subassembly detected to radio frequency chip rethread coordinator and data processor's effect, can handle the signal transmission that detects to the host computer and report to the police simultaneously; the smoke detection sensor, the temperature detection sensor and the CO detection sensor can detect smoke, gas and heat when a fire disaster occurs, the fire disaster detection device is suitable for working under severe and special environments, and networking, wireless and intelligentization of fire disaster detection can be realized through wireless sensor network and data fusion.

The above is only the preferred embodiment of the present invention, and all the equivalent changes and modifications made according to the claims of the present invention should be covered by the present invention.

Claims (9)

1. The utility model provides a building fire detecting system based on wireless multisensor information fusion, includes radio frequency chip, coordinator, host computer, siren and data processor, its characterized in that: the intelligent detection system comprises a plurality of detection assemblies, wherein the detection assemblies are arranged in a building at equal intervals and are electrically connected with a radio frequency chip, the radio frequency chip is in wireless communication with a coordinator, a main control module is arranged in a data processor and is connected with a coordinator control circuit, a first wireless communication module, a GSM module, an alarm module and a power module, the data processor is in wireless communication with an upper computer through the first wireless communication module, the data processor is in electrical connection with the alarm through the alarm module, and the power module is used for supplying power to the data processor.

2. The building fire detection system based on wireless multi-sensor information fusion according to claim 1, characterized in that: the detection assembly comprises a smoke detection sensor, a temperature detection sensor and a CO detection sensor, and the detection assemblies are arranged in the building at equal intervals and are installed every four meters.

3. The building fire detection system based on wireless multi-sensor information fusion according to claim 2, characterized in that: the radio frequency chip is connected with temperature and humidity detection circuit, second wireless communication module, smog collection and conditioning module, power supply circuit and CO detection circuitry, the radio frequency chip warp second wireless communication module carries out wireless communication with smog detection sensor, temperature detection sensor and CO detection sensor, the radio frequency chip warp second wireless communication module with the coordinator carries out wireless communication, power supply circuit can step down 5V voltage conversion of output to 3.3V voltage.

4. The building fire detection system based on wireless multi-sensor information fusion according to claim 3, characterized in that: the radio frequency chip comprises a U3 chip, a resistor R1, a capacitor C25, a capacitor C27, a crystal oscillator Y1, a capacitor C26, a capacitor C28, a capacitor C29, a crystal oscillator Y2, a capacitor C20, a capacitor C22, a capacitor C23, a capacitor C24, a live wire L7, a capacitor C19, a capacitor C21, a live wire L21, a capacitor C21, a live wire L21, a resistor R21 and a capacitor C21, wherein a pin No. 41 of the U21 chip is grounded, a pin No. 30 of the U21 chip is connected with one end of the resistor R21, the other end of the resistor R21 is grounded, a pin No. 40 of the U21 chip is connected with one end of the capacitor C21, the other end of the capacitor C21 is grounded, one end of the Y21 of the U21 is connected with one end of the capacitor C21, one end of the Y21 is connected with the capacitor C21, one end of the Y21 of the U21 of the capacitor C21 is grounded, one end of the Y21 of the capacitor C21 is connected with one end of the U21, and one end of the Y21 of the Y of the capacitor C21 of the Y21 of the crystal oscillator Y21, a pin 22 of the U3 chip is connected to the other end of the crystal oscillator Y1, the other end of the crystal oscillator Y1 is connected to one end of the capacitor C26, the other end of the capacitor C26 is grounded, a pin 33 of the U3 chip is connected to one end of the crystal oscillator Y2, one end of the crystal oscillator Y2 is connected to one end of the capacitor C28, the other end of the capacitor C28 is grounded, a pin 32 of the U3 chip is connected to the other end of the crystal oscillator Y2, the other end of the crystal oscillator Y2 is connected to one end of the capacitor C29, and the other end of the capacitor C29 is grounded; a pin 26 of the U3 chip is connected to one end of a capacitor C19, the other end of the capacitor C19 is connected in series with one end of the capacitor C20, one end of a live wire L7 and one end of a live wire L5, the other end of the capacitor C20 is grounded, the other end of the live wire L7 is connected in series with one end of the capacitor C24 and one end of a capacitor C22, the other end of the capacitor C24 is connected in series with one end of the capacitor C23 and then connected to an electromotive force E1, the other end of the capacitor C22 is connected in parallel with the other end of the capacitor C23 and then grounded, the other end of the live wire L5 is connected in series with one end of the capacitor C18, one end of the capacitor C21 and one end of the live wire L6, and the other end of the live wire L6 is grounded; the No. 1 pin, the No. 2 pin, the No. 3 pin and the No. 4 pin of the U3 chip are grounded after being connected in series, the No. 20 pin of the U3 chip is connected in series with one end of the resistor R2 and one end of the capacitor C30, the other end of the capacitor C30 is grounded, and the other end of the resistor R2 is connected with a 3.3V port; the No. 39 pin of the U3 chip is connected with one end of the capacitor C10, the other end of the capacitor C10 is grounded, the No. 39 pin, the No. 10 pin, the No. 21 pin, the No. 24 pin, the No. 27 pin, the No. 28 pin, the No. 29 pin and the No. 31 pin of the U3 chip are connected in series and then connected with one end of the live wire L4, the other end of the live wire L4 is connected with the 3.3V port, the No. 10 pin of the U3 chip is connected with one end of the capacitor C11, the other end of the capacitor C11 is grounded, the No. 21 pin of the U3 chip is connected with one end of the capacitor C12, the other end of the capacitor C12 is grounded, the No. 24 pin of the U3 chip is connected with one end of the capacitor C13, the other end of the capacitor C13 is grounded, the No. 27 pin, the No. 28 pin and the No. 29 pin of the U3 chip are connected with one end of the capacitor C14 and one end of the capacitor C15, the other end of the capacitor C14 and the other end of the capacitor C15 are grounded, a No. 31 pin of the U3 chip is connected with one end of the capacitor C16, the other end of the capacitor C16 is grounded, one end of the capacitor C16 is connected with one end of the capacitor C17, and the other end of the capacitor C17 is grounded; the No. 36 pin of the U3 chip is connected with an SHT-CLK port, the No. 35 pin of the U3 chip is connected with an SHT-DATA port, the No. 9 pin of the U3 chip is connected with a DOUT-smile port, the No. 8 pin of the U3 chip is connected with an AOUT-smile port, the No. 12 pin of the U3 chip is connected with a VIN port, and the No. 13 pin of the U3 chip is connected with a VSSA port.

5. The building fire detection system based on wireless multi-sensor information fusion according to claim 4, characterized in that: the temperature and humidity detection circuit comprises a U6 chip, a resistor R37, a capacitor C68, a resistor R36 and a resistor R35, wherein a pin 1 of the U6 chip is connected with one end of the resistor R36, the other end of the resistor R36 is connected with the SHT-CLK port, a pin 2 of the U6 chip is connected with one end of the resistor R37 and one end of the capacitor C68 in series and then connected with a 3.3V port, the other end of the capacitor C68 is connected with a pin 3 of the U6 chip in series and then connected with the ground, a pin 4 of the U6 chip is connected with the other end of the resistor R37 in series and then connected with one end of the resistor R35, and the other end of the resistor R35 is connected with the SHT-DATA port.

6. The building fire detection system based on wireless multi-sensor information fusion according to claim 4, characterized in that: the smoke collecting and conditioning module comprises an MQ-2 gas sensor, a resistor R38, a resistor R39, a capacitor C66, a voltage follower LM, a capacitor C68, a resistor R42, a resistor R43, a diode D1, a diode D2, a resistor RP, an operational amplifier TL084, a resistor R40, an LED light-emitting diode, a capacitor C67, a resistor R41, a diode D3 and a diode D4, wherein a No. 1 pin, a No. 2 pin and a No. 3 pin of the MQ-2 gas sensor are connected in series and then connected with a 5V port, a No. 5 pin of the MQ-2 gas sensor is connected with one end of the resistor R38, the other end of the resistor R38 is grounded, a No. 4 pin and a No. 6 pin of the MQ-2 gas sensor are connected in series and then connected with one end of the resistor R39, the other end of the resistor R39 is grounded, one end of the resistor R39 is connected with one end of the capacitor C66, the other end of the capacitor C66 is grounded, one end of the capacitor C66 is connected with a pin No. 5 of the voltage follower LM, a pin No. 6 of the voltage follower LM is connected with a pin No. 7 of the voltage follower LM in series and then is connected with one end of the capacitor C68, the other end of the capacitor C68 is grounded, one end of the capacitor C68 is connected with one end of the resistor R42 and one end of the resistor R43 in series, the other end of the resistor R42 is connected with the anode of the diode D1, the cathode of the diode D1 is connected with the other end of the resistor R43 in series and then is connected with the anode of the diode D2, the anode of the diode D2 is connected with the AOUT-smoke port, the cathode of the diode D2 is connected with the 3.3V port, a pin No. 5 of the voltage follower LM is connected with a pin No. 2 of the operational amplifier TL084, a pin No. 3 of the operational amplifier TL084 is connected with the resistor RP, one end of the resistor RP is connected with the 5V port, and the other end of the resistor RP is grounded, the pin 4 of the operational amplifier TL084 is grounded, the pin 11 of the operational amplifier TL084 is connected in series with one end of the resistor R40 and then connected to the 5V port, the other end of the resistor R40 is connected to the anode of the LED light emitting diode, the cathode of the LED light emitting diode is connected in series with one end of the capacitor C67, one end of the resistor R41 and the pin 1 of the operational amplifier TL084, the other end of the capacitor C67 is grounded, the other end of the resistor R41 is connected in series with the cathode of the diode D3 and the anode of the diode D4 and then connected to the DOUT-smike port, the cathode of the diode D4 is connected to the 3.3V port, and the anode of the diode D3 is grounded.

7. The building fire detection system based on wireless multi-sensor information fusion according to claim 4, characterized in that: the power supply circuit comprises a U2 chip, a U1 chip, a live wire L1, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a live wire L4, a capacitor C4 and a capacitor C4, wherein a pin 1 of the U4 chip is connected with one end of the live wire L4 and one end of the capacitor C4, the other end of the live wire L4 is connected with a pin 3 of the U4 chip, a pin 1 of the U4 chip is connected with one end of the capacitor C4 and then connected with the VIN port, a pin 2 of the U4 chip is connected with the other end of the capacitor C4 in series and then grounded, one end of the capacitor C4 is connected with one end of the capacitor C4 and then connected with the 5V port, the other end of the capacitor C4 and the other end of the capacitor C4 are both connected with the pin 2 of the U4, a pin 3 of the U4 chip is connected with one end of the capacitor C4 and then connected with the pin 2 of the U4 and the capacitor C4, capacitance C4 one end with capacitance C5 one end is connected, the capacitance C5 other end with live wire L3 one end is connected the back ground connection, capacitance C5 one end with live wire L2 one end is connected, the live wire L2 other end with capacitance C6 one end is connected, the live wire L3 other end with the capacitance C6 other end is connected, capacitance C6, capacitance C7 and capacitance C8 set up in parallel, capacitance C6 one end is connected with the V3.3A port, the capacitance C6 other end with the VSSA port is connected.

8. The building fire detection system based on wireless multi-sensor information fusion according to claim 1, characterized in that: the fixing device comprises a first hollow supporting plate, second hollow supporting plates are arranged at the left end and the right end of the upper surface of the first hollow supporting plate respectively, the first hollow supporting plate and the second hollow supporting plate are perpendicular to each other and communicated, a fixing plate is arranged on the upper surface of the second hollow supporting plate, the first hollow supporting plate, the second hollow supporting plate and the fixing plate are matched to form a placing area for placing the data processor, a first clamping mechanism for clamping the data processor is embedded on the second hollow supporting plate, a second clamping mechanism for clamping the data processor is arranged on the fixing plate, an exhaust fan is fixedly arranged in the second hollow supporting plate, a plurality of first radiating holes are formed in the second hollow supporting plate at equal intervals, an opening is formed in the upper surface of the first hollow supporting plate, and a stretching plate is embedded in the opening, and a plurality of second heat dissipation holes are formed in the stretching plate at equal intervals.

9. The building fire detection system based on wireless multi-sensor information fusion according to claim 8, characterized in that: the first clamping mechanism and the second clamping mechanism are identical in structure, the first clamping mechanism comprises a first movable plate and a second movable plate, the first movable plate and the second movable plate are respectively arranged at the front end and the rear end of the outer side of a second hollow supporting plate, connecting rods are arranged at the upper end and the lower end of the left side face of the first movable plate and the left side face of the second movable plate, the tail ends of the connecting rods penetrate through the second hollow supporting plate and extend to the placing area, a pressing block used for limiting and fixing the data processor is arranged on the tail end face of each connecting rod, a plurality of third heat dissipation holes are formed in the pressing block at equal distances, a reset spring is sleeved on each connecting rod and located between the pressing block and the second hollow supporting plate, and a stretching handle is arranged between the right side faces of the first movable plate and the second movable plate.

Images