Mining antifouling multispectral fire detection device

Abstract

The utility model relates to a mining antifouling multispectral fire behavior detection device which comprises a shell, a processor, a fire behavior detection unit and a dust detection unit, and the fire behavior detection unit comprises an ultraviolet tube photoelectric sensor, a lead sulfide infrared photoelectric sensor and a pyroelectric infrared photoelectric sensor. The output end of the ultraviolet tube photoelectric sensor is connected with the input end of the processor; the output ends of the lead sulfide infrared photoelectric sensor and the pyroelectric infrared photoelectric sensor are respectively connected with the input end of the processor; a window is arranged in the shell, a dust detection unit is arranged close to the window, the dust detection unit comprises an infrared dust sensor, and the output end of the infrared dust sensor is connected with the input end of the processor; the processor is in communication connection with an upper computer and is further electrically connected with an alarm module. The mine fire detection device can detect the wave band range of the whole substance combustion, and can realize accurate mine fire detection in combination with the dust detection unit.

Description

Technical Field

[0001] The utility model belongs to the technical field of mine detection, and particularly relates to a mine anti-pollution multi-spectral fire detection device. Background Art

[0002] There are various flammable and explosive gases in coal mines. Once a fire breaks out, even a very small spark may bring about very serious accidents. Therefore, flame detection is a crucial link in coal mine fire prevention. How to detect and identify the flame in its initial or budding state and give an alarm has become an important research direction.

[0003] Fires exist in the combustion of different substances, which will produce flames in different wavelength bands, bringing great difficulties to detection. Moreover, the mine environment is complex, and dust interference will pose an obstacle to detection. Dust will cover the detection surface, resulting in a relatively high detection sensitivity or false alarm rate, and it is impossible to accurately judge the fire situation.

[0004] Therefore, there is an urgent need for a mine fire detection device to solve the above problems and achieve accurate underground mine fire detection. Summary of the Invention

[0005] The utility model provides a mine anti-pollution multi-spectral fire detection device to solve the problems of narrow spectral range of existing fire detection equipment and inaccurate detection caused by dust influence. An ultraviolet tube photoelectric sensor, a lead sulfide infrared photoelectric sensor and a pyroelectric infrared photoelectric sensor are set to cover the entire wavelength band range of substance combustion, and an accurate underground mine fire detection is realized by combining a dust detection unit.

[0006] To achieve the above object, the utility model provides a mine anti-pollution multi-spectral fire detection device, which includes a housing, and also includes a processor, a fire detection unit and a dust detection unit. The fire detection unit includes an ultraviolet tube photoelectric sensor, a lead sulfide infrared photoelectric sensor and a pyroelectric infrared photoelectric sensor. The output end of the ultraviolet tube photoelectric sensor is connected to the input end of the processor, and the output ends of the lead sulfide infrared photoelectric sensor and the pyroelectric infrared photoelectric sensor are respectively connected to the input end of the processor;

[0007] A window is arranged in the housing, and a dust detection unit is arranged close to the window. The dust detection unit includes an infrared dust sensor, and the output end of the infrared dust sensor is connected to the input end of the processor;

[0008] The processor is communicatively connected to a host computer, and the processor is also electrically connected to an alarm module.

[0009] Further, an operational amplifier is connected between the output ends of the ultraviolet tube photoelectric sensor, the lead sulfide infrared photoelectric sensor and the pyroelectric infrared photoelectric sensor and the input end of the processor.

[0010] Combined with an ultraviolet tube photoelectric sensor, a lead sulfide infrared photoelectric sensor, and a pyroelectric infrared photoelectric sensor for multi-spectral detection, it can identify various fire situations.

[0011] Setting up an operational amplifier meets the purpose of amplifying small signals and effectively reducing input noise, improving detection accuracy.

[0012] Setting up multiple channels greatly reduces the phenomenon of false alarms.

[0013] Furthermore, an RS485 serial port module is provided between the processor and the host computer, and the processor is communicatively connected to the host computer through the RS485 serial port module.

[0014] Remote communication is achieved through the RS485 serial port module.

[0015] Furthermore, the housing is a cylindrical structure, and the front cover and the rear cover are detachably connected to both ends of the housing. A circular through-hole is provided on the front cover, and the window is arranged in the circular through-hole. The infrared dust sensor is embedded in the front cover, and the probe is close to the window. A sealing ring is provided between the front cover and the housing.

[0016] Setting up an infrared dust sensor for surface fouling identification can effectively avoid false alarms of fires caused by surface fouling.

[0017] Furthermore, the rear cover is provided with a wire outlet hole, and a waterproof connector is arranged at the position of the wire outlet hole.

[0018] The housing, the front cover, and the rear cover are respectively connected by a detachable connection method, which is convenient for maintenance. The housing is made of high-strength stainless steel, the window is made of high-strength tempered glass, and a sealing ring is provided between the front cover and the housing, which can meet the requirements of waterproofing, fireproofing, and use in different outdoor environments.

[0019] Through the above technical solutions, the beneficial effects of the present utility model are as follows:

[0020] The utility model realizes accurate detection of mine fire conditions. An ultraviolet tube photoelectric sensor, a lead sulfide infrared photoelectric sensor and a pyroelectric infrared photoelectric sensor are set to cover the entire wavelength range of material combustion. Multi-spectral detection can identify various fire conditions. A processor is set to analyze the detection parameters and transmit them outward, meeting the technical requirements of real-time fire detection. The processor and multiple operational amplifiers form multiple signal transmission channels to simultaneously detect the ultraviolet tube photoelectric sensor, the lead sulfide infrared photoelectric sensor and the pyroelectric infrared photoelectric sensor, greatly reducing the phenomenon of false alarms. An infrared dust sensor detects the viewing window, and provides a hardware basis for realizing dust pollution detection around the viewing window through invisible infrared detection technology combined with the processor. The processor outputs fire and viewing window dust pollution signals through an alarm module, and the staff can process the on-site situation in a timely manner according to the signals sent by the alarm module. Description of the Drawings

[0021] Figure 1 is the electrical schematic diagram of a mine anti-pollution multi-spectral fire detection device of the utility model;

[0022] Figure 2 is one of the structural schematic diagrams of a mine anti-pollution multi-spectral fire detection device of the utility model;

[0023] Figure 3 is the second structural schematic diagram of a mine anti-pollution multi-spectral fire detection device of the utility model;

[0024] Reference numerals in the drawings: 1 is the housing, 2 is the processor, 3 is the mine cable, 4 is the dust detection unit, 5 is the ultraviolet tube photoelectric sensor, 6 is the lead sulfide infrared photoelectric sensor, 7 is the pyroelectric infrared photoelectric sensor, 8 is the viewing window, 9 is the operational amplifier, 10 is the RS485 serial port module, 11 is the front cover, 12 is the rear cover, 13 is the sealing ring, 14 is the waterproof connector. Specific Embodiments

[0025] The following further describes the utility model in conjunction with the drawings and specific embodiments:

[0026] Embodiment 1

[0027] As Figures 1 to 3 shown, a mine anti-pollution multi-spectral fire detection device includes a housing 1, and also includes a processor 2, a fire detection unit and a dust detection unit 4. The fire detection unit includes an ultraviolet tube photoelectric sensor 5, a lead sulfide infrared photoelectric sensor 6 and a pyroelectric infrared photoelectric sensor 7. The output end of the ultraviolet tube photoelectric sensor 5 is connected to the input end of the processor 2, and the output ends of the lead sulfide infrared photoelectric sensor 6 and the pyroelectric infrared photoelectric sensor 7 are respectively connected to the input end of the processor 2;

[0028] A window 8 is provided inside the housing 1, and a dust detection unit 4 is provided near the window 8. The dust detection unit 4 includes an infrared dust sensor, and the output end of the infrared dust sensor is connected to the input end of the processor 2;

[0029] The processor 2 is communicatively connected to a host computer, and the processor 2 is also electrically connected to an alarm module.

[0030] An operational amplifier 9 is connected between the output ends of the ultraviolet tube photoelectric sensor 5, the lead sulfide infrared photoelectric sensor 6, and the pyroelectric infrared photoelectric sensor 7 and the input end of the processor 2.

[0031] An RS485 serial port module 10 is provided between the processor 2 and the host computer, and the processor 2 is communicatively connected to the host computer through the RS485 serial port module 10.

[0032] The housing 1 is of a cylindrical structure. The front cover 11 and the rear cover 12 are detachably connected to both ends of the housing 1. A circular through hole is provided on the front cover 11, and the window 8 is provided in the circular through hole. The infrared dust sensor is embedded on the front cover 11, and the probe is close to the window 8. A sealing ring 13 is provided between the front cover 11 and the housing 1.

[0033] The rear cover 12 is provided with an outlet hole, and a waterproof connector 14 is provided at the position of the outlet hole.

[0034] In this embodiment, the front cover 11 and the rear cover 12 are threadedly connected to the housing 1. In this embodiment, the processor 2 is selected as an STM32 series single-chip microcomputer. The operational amplifier 9 is selected as an LM358 operational amplifier. The ultraviolet tube photoelectric sensor 5, the lead sulfide infrared photoelectric sensor 6, and the pyroelectric infrared photoelectric sensor 7 are arranged at the inner side position of the window 8. The ultraviolet tube photoelectric sensor 5, the lead sulfide infrared photoelectric sensor 6, and the pyroelectric infrared photoelectric sensor 7 are fixed by a PCB board. The processor 2, the operational amplifier 9, the ultraviolet tube photoelectric sensor 5, the lead sulfide infrared photoelectric sensor 6, the pyroelectric infrared photoelectric sensor 7, the RS485 serial port module 10, and the infrared dust sensor are electrically connected by a PCB board. The outgoing wires of the RS485 serial port module 10 and the outgoing wires of the alarm module are transmitted outward through the mining cable 3.

[0035] During operation, the ultraviolet tube photoelectric sensor 5, the lead sulfide infrared photoelectric sensor 6, and the pyroelectric infrared photoelectric sensor 7 work in real time. The wavelength range of the flame mainly concentrates in the infrared and visible light regions. The infrared wavelength range is 0.75 - 300 μm, and the visible light wavelength range is 0.380 - 0.75 μm. The combustion of substances is mainly manifested in the ultraviolet band of 0.1 - 0.3 μm. The ultraviolet tube photoelectric sensor 5, the lead sulfide infrared photoelectric sensor 6, and the pyroelectric infrared photoelectric sensor 7 cover the entire wavelength range of substance combustion. When one of the sensors detects a fire, the processor 2 sends out a signal to the alarm module. The alarm module includes an audible and visual alarm device, and the processor 2 provides a signal to drive the audible and visual alarm device to work after being powered on. At the same time, the processor 2 sends a signal to the host computer through the RS485 serial port module 10. After the staff receives the signal, they can process it in a timely manner.

[0036] The dust detection unit 4 detects the surrounding environment of the window 8 in real time. When there is dust, the dust detection unit 4 outputs a high-level signal. The processor 2 receives and sends out a signal, sends a signal to the host computer through the RS485 serial port module 10, or provides a signal to drive the audible and visual alarm device to work after being powered on. After the staff receives the signal, they can process it in a timely manner.

[0037] The above-described embodiments are only the preferred embodiments of the present invention, and do not limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made according to the structure, features, and principles described in the scope of the present invention patent should be included in the scope of the present invention's patent application.

Claims

1. A mine anti-pollution multi-spectral fire detection device, including a housing (1), characterized in that, It further includes a processor (2), a fire detection unit, and a dust detection unit (4). The fire detection unit includes an ultraviolet tube photoelectric sensor (5), a lead sulfide infrared photoelectric sensor (6), and a pyroelectric infrared photoelectric sensor (7). The output end of the ultraviolet tube photoelectric sensor (5) is connected to the input end of the processor (2), and the output ends of the lead sulfide infrared photoelectric sensor (6) and the pyroelectric infrared photoelectric sensor (7) are respectively connected to the input end of the processor (2); A window (8) is arranged inside the housing (1), and the dust detection unit (4) is arranged close to the window (8). The dust detection unit (4) includes an infrared dust sensor, and the output end of the infrared dust sensor is connected to the input end of the processor (2); The processor (2) is communicatively connected to a host computer, and the processor (2) is also electrically connected to an alarm module.

2. The multi-spectral fire detection device for mine use with anti-pollution according to claim 1, characterized in that, An operational amplifier (9) is connected between the output ends of the ultraviolet tube photoelectric sensor (5), the lead sulfide infrared photoelectric sensor (6), and the pyroelectric infrared photoelectric sensor (7) and the input end of the processor (2).

3. The multi-spectral fire detection device for mine anti-pollution according to claim 1, characterized in that, An RS485 serial port module (10) is arranged between the processor (2) and the host computer, and the processor (2) is communicatively connected to the host computer through the RS485 serial port module (10).

4. A mine anti-pollution multi-spectral fire detection device according to claim 1, characterized in that, The housing (1) is of a cylindrical structure, and the front cover (11) and the rear cover (12) are detachably connected to both ends of the housing (1). A circular through hole is opened on the front cover (11), and the window (8) is arranged inside the circular through hole. The infrared dust sensor is embedded on the front cover (11), and the probe is close to the window (8). A sealing ring (13) is arranged between the front cover (11) and the housing (1).

5. The mine anti-pollution multi-spectral fire detection device according to claim 4, characterized in that, The rear cover (12) is provided with an outlet hole, and a waterproof connector (14) is arranged at the position of the outlet hole.

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