35results about How to "Purify in time" patented technology

The invention relates to a pig house environment harmful gas multi-point measurement system based on a CAN field bus. The system comprises a plurality of detection units and a detection center computer, all the detection units are connected with the detection center computer through a field bus system to realize the information interaction between the detection center computer and all the detection units, wherein the detection units are used for collecting data of pig house environment harmful gas and uploading to the detection center computer; and the detection center computer is used for processing and identifying the mode of the data of the pig house environment. The system is applicable to multi-point simultaneous measurement of the harmful gas in a pig house which is the growing environment of live pigs and can simultaneously obtain the distribution status of the harmful gas of one or a plurality of detection points, obtains the status grade of the harmful gas of the whole pig house by the integration of multi-point information, improves the detection reliability, the accuracy and the real-time property, reduces the cost of the system and has very broad application prospects.

The invention discloses a wireless sensor-based mine environment harmful gas detection system. The system is composed of a plurality of detection units and a detection center computer, and realizes the multi-point simultaneous detection and condition discrimination of harmful gases in mine environment, the detection units realize detection of the characteristic parameters of harmful gases at detection points, information interaction of all the detection units and the detection center computer is realized through a wireless communication module, the detection center computer is used for processing and managing data of harmful gases in the detected mine environment, and grade discrimination of conditions of the harmful gases at the detection points, detection surfaces and the whole detection environment is realized through a plurality of groups of wavelet neural network identifiers The detection system is designed to solve the problems of low accuracy and poor real time property of present coal mine harmful detection technologies, and realizes multi-point simultaneous detection of the practical conditions of the concentration of the harmful gases in the coal mine by uniformly distributing gas inlets in different positions of the detected coal mine according to the practical conditions of coal mine detection points.

The invention discloses an indoor air purification system, comprising a plurality of indoor air purifiers and a control module, wherein each indoor air purifier comprises a machine case; an air duct pipe, a motor and a centrifugal impeller are arranged in each machine case; each centrifugal impeller is connected with a rotating shaft of the corresponding motor; a sensor is arranged on the lateral wall of each machine case; each circuit board and the sensor are arranged in an isolating chamber; the sensor and the circuit board in each indoor air purifier and the circuit board are electrically connected with the control module; according to a numerical value which is detected by the sensor in each indoor air purifier, the control module judges whether the corresponding indoor air purifier is started. According to the indoor air purification system, one independent indoor air purifier can be arranged in each room or at each of a plurality of parts or a large room in a hidden manner; the plurality of indoor air purifiers and the control module form the indoor air purification system; the indoor air purification system is capable of timely purifying air, and is very suitable for use in houses with large area.

The invention discloses an engine waste gas aftertreatment system, being used for purifying waste gas discharged from an exhaust pipe of the engine. The engine waste gas aftertreatment system comprises a catalytic converter, wherein the catalytic converter is connected with the exhaust pipe of the engine by virtue of a turbocharger, the turbocharger is connected with an air inlet pipe of the engine by virtue of an air inlet intercooler, the catalytic converter contains a catalyst which is used for an assisting reaction; when the engine is normally operated, an exhaust switching valve controls high temperature waste gas to enter into the catalytic converter, thus the high temperature waste gas enters into the air after being purified; and when the engine is in a reverse towing working condition, and the exhaust switching valve controls low temperature exhausted gas to enter into the engine to be circulated from a return line or is directly discharged into the air from a bypass pipeline, thus temperature of an aftertreatment device is not influenced by the low temperature exhausted gas. By adopting the engine waste gas aftertreatment system disclosed by the invention, the pipeline of the aftertreatment device is improved, the influence of exhaust to the temperature of the aftertreatment device is reduced, thus the aftertreatment device maintains high-efficiency purification exhaust when the engine is converted into the normal operation from the 'reverse towing' working condition, and hidden troubles that environment is polluted caused by the uncompleted waste gas purification can be effectively eliminated.

A shipborne water area purifying system comprises an inflator, a water pump, a dosing device, an air floatation device, an electric flocculation device, a sand filter tank and a controller which are respectively arranged in a cabin, the inflator is communicated with the air floatation device and the electric flocculation device through gas conveying tubes respectively to supply compressed air to the air floatation device and the electric flocculation device, the water pump, the air floatation device, the electric flocculation device and the sand filter tank are sequentially communicated through a water conveying tube, the dosing device is connected with the air floatation device for adding a drug to sewage entering the air floatation device, the controller is electrically connected with the inflator, the dosing device, the air floatation device, the electric flocculation device and the sand filter tank respectively, and sewage sequentially enters the air floatation device, the electric flocculation device and the sand filter tank under the water pump, is purified, and returns to an original water area. When an abrupt water area pollution accident occurs, the shipborne water area purifying system can timely enter the polluted water area to purify sewage in order to emergently process the abrupt water area pollution accident. The invention further provides a water area purifying method.

The invention discloses a viscous material filtering machine which comprises a rack, wherein a lower material hopper is arranged on the rack; the bottom of the lower material hopper is connected with a material outlet pipe; a sieving frame which is positioned above the lower material hopper is also elastically connected with the rack; the top of the sieving frame is open; the rear part and the two side parts of the sieving frame are respectively provided with a sealing baffle; the front part of the sieving frame is provided with a taphole; the sealing baffle at the side is provided with a plurality of stirring and discharging devices; the bottom of the sieving frame is connected with a sieve net corresponding to an upper opening of the lower material hopper; a vibration motor is also arranged on the sieving frame. The viscous material filtering machine has the advantages that the structure is simple, a calcium hydroxide size can be purified in time, the purifying effect is good and the product quality is high.

The invention discloses an intelligent swimming pool, which comprises a water circulation system, a reverse flow dynamic keeping system and a position dynamic keeping system. The water circulation system forms a circulating water flow in the swimming pool to provide water flow resistance for a user during swimming; the reverse flow dynamic keeping system adjusts the direction of the water flow inthe swimming pool to enable the direction of the water flow in the swimming pool to be opposite to the swimming direction of the user, so that the user keeps swimming in the reverse flow all the time;and the position dynamic keeping system adjusts the speed of the water flow in the swimming pool to enable the speed of the water flow in the swimming pool to be equal or approximate to the swimmingspeed of the user, and the user stands still or is limited to move within a certain interval range. To sum up, the flowing speed and the flowing direction can be adjusted continuously and automatically according to the swimming speed and posture of the user, various intelligent control functions are achieved, the problem that a site of the swimming pool is limited is effectively solved, and the user obtains the better swimming experience.

The invention belongs to the technical field of robots, and discloses an inspection robot multi-sensor system and an inspection method. The inspection robot multi-sensor system comprises an image acquisition module, a multi-sensor detection module, a positioning module, a face recognition module, an alarm module, a central control module, a signal transmission module, a remote monitoring terminal, an air purification module, a driving module, a safety comprehensive analysis module and a charging module. Through the image acquisition module and the multi-sensor detection module, corresponding data information can be acquired, and the comprehensiveness of detection data is improved. The face recognition module is arranged, so that a worker can punch in work, or idle people and the like are prevented from entering a prohibited area. By arranging the safety comprehensive analysis module, the safety of the surrounding environment of the robot is evaluated in time.

The invention discloses an emergency treatment device for water pollution accidents, which comprises a water taking part and a water treatment part, wherein the water taking part consists of a water pump trailer and a substance trailer, the inside of the water pump trailer is provided with a sewage pump, and the sewage pump is connected with an electric control cabinet; the substance trailer is dispersedly equipped with rubber water pipes; a water inlet of the sewage pump is connected with the rubber water pipes, and a water outlet of the sewage pump is connected with the water treatment part;and the water treatment part arranges an activated coke absorption device on a trailer, and a water inlet of the activated coke absorption device is connected with the water outlet of the sewage pumpof the water taking part. The rubber water pipes connected with the water inlet of the sewage pump on the water pump trailer are placed into sewage, the sewage pump is started to convey the sewage into the activated coke absorption device arranged on the trailer for sewage treatment, and treated water is drained from a water outlet of the activated coke absorption device.

The invention relates to the technical field of air quality monitoring and discloses an air quality display system. The air quality display system comprises a single-chip computer control circuit, a volatile organic compound signal acquisition circuit, a formaldehyde signal acquisition circuit, a particulate matter signal acquisition circuit, a temperature and humidity sensor, a wifi circuit, an alarm circuit, a power supply circuit, a display screen and a backup power source. The volatile organic compound signal acquisition circuit, the formaldehyde signal acquisition circuit, the particulatematter signal acquisition circuit, the temperature and humidity sensor, the wifi circuit, the alarm circuit, the power supply circuit, the display screen and the backup power source are connected with the single-chip computer control circuit. The air quality display system has advantages that environmental air quality can be monitored in real time, and a user can know air quality in real time; byarrangement of alarm equipment, the system alarms when a set threshold is exceeded, so that the user can be reminded timely to further take measures timely, and a great environment is provided for the user.

The invention discloses an indoor air quality monitoring management system based on environmental sensing. The system comprises a humidity sensor, a micro processing device, a Bluetooth transmission module, a user mobile phone and a data memory, the temperature sensor is arranged on the lower portion of the humidity sensor, a PM 2.5 sensor is arranged on the lower portion of the temperature sensor, a gas sensor is arranged on the lower portion of the PM 2.5 sensor, the micro processing device is connected with the humidity sensor, the temperature sensor, the PM 2.5 sensor and the gas sensor, the micro processing device is connected with a monitoring processing device through a wireless communication module, the user mobile phone is connected with the Bluetooth transmission module, and thedata memory is connected with the micro processing device. The system has the advantages that indoor air detection and monitoring can be achieved, a remote monitoring system is formed by the Bluetoothtransmission module and the user mobile phone, and therefore a user can monitor the quality of indoor air at any time anywhere.

The invention relates to an indoor environment monitoring and purifying system. The indoor environment monitoring and purifying system comprises a data collecting unit, a communication unit, a systemprocessor, a purifying controlling unit, a warning unit, a big data server, a displayer and a mobile terminal; the data collecting unit is connected with the communication unit, the communication unitis connected with the system processor, the system processor is connected with the purifying controlling unit and the big data server, the purifying controlling unit is connected with the warning unit, the big data server is connected with the displayer and the big data server is connected with the mobile terminal by a GSM module. According to the system, poisonous and harmful gas can be effectively detected and the poisonous and harmful gas can be purified in time; moreover, the indoor comfort degree can be adjusted in time by detecting the indoor temperature and humidity, so that the requirement of people for a healthy and comfortable environment can be met; and the problem of data storage can be solved by using the big data server.

The invention discloses a vehicle-mounted movable external air purifying device which is installed outside a vehicle. The device comprises a shell, a purifying system, a ventilation system and a circuit connection system, wherein the purifying system, the ventilation system and the circuit connection system are installed inside the shell. The purifying system is at least composed of a filter screen assembly and a purifying layer assembly. The ventilation system is composed of a draught fan. The circuit connection system is used for providing electric energy to the vehicle-mounted movable external air purifying device. The end, facing the vehicle head, of the shell is the front shell end, the purifying system and the ventilation system are sequentially installed inside the shell from frontto back, and the filter screen assembly is arranged in front of the purifying layer assembly. According to the air purifying device, positive air pressure and / or suction of the draught fan can be sufficiently utilized in the vehicle traveling process, air passing through the purifying system is efficiently purified in time, and the effect that a road air purifying gallery is formed along the vehicle travelling track is achieved.

The invention belongs to the field of road tunnels and railway tunnels, and particularly relates to a recycling-type tunnel smoke prevention device, which mainly aims at solving the present problem of the present tunnel safety evacuation passage that the pressurizing ventilation effect is limited. A recycling-type air curtain machine which is arranged on a junction of a tunnel safety evacuation passage and a main tunnel, air which is blown by a blower through an air blowing strip stream on the air curtain machine forms a high pressure air curtain at an entrance of the safety evacuation passage to prevent the smoke of the main tunnel from entering the safety evacuation passage; and the returned air from an air return port on the air curtain machine flows back to a dust collector through a wind pipe, the smoke which is possibly mixed in the returned air can be purified, and the clean air is re-sent onto the air blowing strip seam on the recycling-type air curtain machine through the blower, therefore, no smoke inside the safety evacuation passage can be guaranteed.

The invention discloses an intelligently controlled air purifying system and a control method thereof. The system comprises an air purifier body, a plurality of air quality sensors, a wireless connecting device and a control device. The invention also relates to a control method of the intelligently controlled air purifying system. The control method comprises the following steps: an air purifier determines a working strength mode according to a detection result of the air quality sensors; when the quantity of the air quality sensors with good detection results in all the detected air quality sensors accounts for a percentage being greater than 80%, the working mode of the air purifier is a low shift; and when the quantity of the air quality sensors with good detection results in all the detected air quality sensors accounts for a percentage between 50% and 80%, the working mode of the air purifier is an intermediate shift; and when the quantity of the air quality sensors with good detection results in all the detected air quality sensors accounts for a percentage being less than 50%, the working mode of the air purifier is a high shift. According to the system and control method disclosed by the invention, the working mode can be automatically lowered when the air quality condition is relatively good while the air purifier body immediately purifiers the indoor air, and the power is reduced and the power consumption is reduced.

The invention discloses a 75MVA transformer with a mixed explosion-proof function. The 75MVA transformer comprises a fire extinguishment mechanism, a pressure release mechanism, a leakage detecting mechanism and a control mechanism which are connected onto the transformer, wherein a system of the 75MVA transformer comprises a control unit as well as a purification unit, a leakage detecting unit, a fire extinguishment unit, a pressure release unit and a transformer unit which are subjected to unified regulation by the control unit. The 75MVA transformer has the benefits as follows: the transformer explosion can be effectively prevented, personal and property safety is protected, and the structure can monitor each part on a winding and can perform early warning and complete explosion-proof actions in time when a short circuit happens. The short-circuit part can be focused to cool, meanwhile, fire-extinguishing gas is uniformly sprayed at the top of the transformer, the explosion-proof means is enhanced, pressure of the transformer can be released in time, and transformer oil waste can be avoided. Each sensor is made of a special material and has higher sensitivity, and false operation or false alarm of the device can be effectively prevented.

The invention relates to a multifunctional indoor air purifier which comprises a box, an air quality monitoring module and an air purification module, wherein the air quality monitoring module and theair purification module are mounted in the box. An air inlet is formed in the lower end of the box, an air outlet is formed in the upper end of the box, the air quality monitoring module is arrangedon the side with the air inlet, the air purification module is arranged in the space between the air quality monitoring module and the air outlet and comprises an air treatment layer, a spray box andan ultrasonic atomizer, the air treatment layer is integrally mounted in the middle of the box, so that the box is divided into upper space and lower space, the ultrasonic atomizer is mounted in the upper space, the spray box is mounted in the lower space, the ultrasonic atomizer is communicated with the spray box through a water conveying pipe. The multifunctional indoor air purifier can simultaneously and efficiently remove particle pollutants, gas pollutants and microbiological contaminants, has the functions of removing formaldehyde and odor, resisting stain and purifying air and is novelin design, simple in structure, multifunctional and convenient to popularize.

The invention relates to a pig house environment harmful gas multi-point measurement system based on a CAN field bus. The system comprises a plurality of detection units and a detection center computer, all the detection units are connected with the detection center computer through a field bus system to realize the information interaction between the detection center computer and all the detection units, wherein the detection units are used for collecting data of pig house environment harmful gas and uploading to the detection center computer; and the detection center computer is used for processing and identifying the mode of the data of the pig house environment. The system is applicable to multi-point simultaneous measurement of the harmful gas in a pig house which is the growing environment of live pigs and can simultaneously obtain the distribution status of the harmful gas of one or a plurality of detection points, obtains the status grade of the harmful gas of the whole pig house by the integration of multi-point information, improves the detection reliability, the accuracy and the real-time property, reduces the cost of the system and has very broad application prospects.

The invention discloses a rural domestic sewage integrated treatment remote control system. The system comprises a plurality of sewage pools, a server module, a communication module, a flow regulationmodule, a water quality monitoring module, a monitoring module, an intelligent terminal, a control module, a data receiving module, a data processing module, a purification processing module and an alarm module, wherein the communication module, the flow regulation module, the water quality monitoring module, the monitoring module, the intelligent terminal, the control module, the data receivingmodule, the data processing module, the purification treatment module and the alarm module form an integrated device, the communication module is used for being connected with the server module, and the control module is coupled to the flow regulation module. In the present invention, the plurality of sewage pools can be remotely controlled, therefore, large-range pollution caused by the fact thatsewage is concentrated in one sewage pool is avoided, automatic control and remote monitoring are realized, and the sewage treatment efficiency is well improved; meanwhile, due to automatic remote control, the labor cost of on-site guarding is saved; and meanwhile, the water in the sewage pools can be purified in time, and under the condition of sewage burst, the information can be fed back to the intelligent terminal in time.

The invention discloses a 75 MVA transformer capable of realizing pressure relief and explosion prevention. The transformer comprises a fire extinguishing mechanism connected onto the transformer, a pressure relief mechanism, a leakage detection mechanism and a control mechanism; a system of the transformer comprises a control unit as well as a purification unit, a leakage detection unit, a fire extinguishing unit, a pressure relief unit and a transformer unit which are controlled by the control unit in a unified manner. The transformer has the benefits as follows: explosions of the transformer can be effectively prevented, personal and property safety can be guaranteed, all positions of a winding can be monitored by the aid of the structure, and timely early-warning and explosion prevention actions can be realized in case of short-circuits. A short-circuited part can be cooled in a targeted manner, meanwhile, fire-extinguishing gas is evenly sprayed to the top of the transformer, the explosion prevention means is enhanced, pressure of the transformer can be relived timely, and waste of transformer oil can be avoided. All sensors of the transformer are made of special materials, have higher sensitivity, and can effectively prevent misoperation or false alarms of the transformer.

The invention provides an air purifier capable of sensing formaldehyde concentration and performing sterilization and formaldehyde removal in time, and relates to the technical field of air purifiers.The air purifier capable of sensing the formaldehyde concentration and performing sterilization and formaldehyde removal in time comprises a base; a machine body shell is fixedly connected to the topof the base; a ventilation pipe is fixedly connected to the top of the machine body shell; and a spring rod is fixedly connected to the end, away from a rotating shaft, of a connecting rod. The spring rod is driven to extrude a stress plate through rotation of the rotating shaft, an electromagnet is powered on to drive a gear to rotate through cooperative use of a rotating block and a rotating ring, and through cooperative use of the gear and a toothed bar, when the air intake is increased, a guide column drives an activated carbon box to move, so that more activated carbon is exposed, and the effect of purifying formaldehyde in time is achieved; and a formaldehyde tester in the machine body shell is driven to move through rotation of the rotating shaft, so that the effect of detecting the concentration of the formaldehyde in air is achieved.

The invention discloses household intelligent air purifying equipment. The household intelligent air purifying equipment comprises an induction module, an information receiving module, a processing module, a control module, a display module, a power supply and a machine body; an output end of the induction module is connected with an input end of the information receiving module; an output end ofthe information receiving module is connected with an input end of the processing module; an output end of the processing module is connected with an input end of the control module; a first output end of the control module is connected with an input end of the display module, and a second output end of the control module is connected with an input end of the power supply; a first power supply switch, a second power supply switch, a third power supply switch and a fourth power supply switch are arranged in the power supply; and an electrostatic dust remover, a centrifugal fan, a negative ion generator, an ultraviolet disinfector and a humidifier are arranged in the machine body.

The invention provides a coal mine intelligent ventilation device and an energy-saving intelligent processing system, and relates to the field of coal mine mining ventilation. The coal mine intelligent ventilation device and the energy-saving intelligent processing system comprise a main ventilation unit, auxiliary ventilation units and a control room unit. The main ventilation unit is used for ventilation and exhaust of an internal main body of a coal mine tunnel; the auxiliary ventilation units are installed on the two sides of the main ventilation unit through fixed rails, and the auxiliary ventilation units are used for assisting the main ventilation unit in ventilating the interior of the mine tunnel; the control room unit is connected with the main ventilation unit through a switch and a CAN bus, and the control room unit is used for processing, receiving and sending information supplied to the main ventilation unit. According to the coal mine intelligent ventilation device and the energy-saving intelligent processing system, through the arrangement of the coal mine intelligent ventilation device and the energy-saving intelligent processing system, the air environment in the mine tunnel can be rapidly and flexibly detected and monitored, gas in the mine tunnel can be rapidly exhausted, and low-cost operation of an exhaust system in a mine can be guaranteed.

A shipborne water area purifying system comprises an inflator, a water pump, a dosing device, an air floatation device, an electric flocculation device, a sand filter tank and a controller which are respectively arranged in a cabin, the inflator is communicated with the air floatation device and the electric flocculation device through gas conveying tubes respectively to supply compressed air to the air floatation device and the electric flocculation device, the water pump, the air floatation device, the electric flocculation device and the sand filter tank are sequentially communicated through a water conveying tube, the dosing device is connected with the air floatation device for adding a drug to sewage entering the air floatation device, the controller is electrically connected with the inflator, the dosing device, the air floatation device, the electric flocculation device and the sand filter tank respectively, and sewage sequentially enters the air floatation device, the electric flocculation device and the sand filter tank under the water pump, is purified, and returns to an original water area. When an abrupt water area pollution accident occurs, the shipborne water area purifying system can timely enter the polluted water area to purify sewage in order to emergently process the abrupt water area pollution accident. The invention further provides a water area purifying method.

The invention belongs to the field of road tunnels and railway tunnels, and particularly relates to a recycling-type tunnel smoke prevention device, which mainly aims at solving the present problem of the present tunnel safety evacuation passage that the pressurizing ventilation effect is limited. A recycling-type air curtain machine which is arranged on a junction of a tunnel safety evacuation passage and a main tunnel, air which is blown by a blower through an air blowing strip stream on the air curtain machine forms a high pressure air curtain at an entrance of the safety evacuation passage to prevent the smoke of the main tunnel from entering the safety evacuation passage; and the returned air from an air return port on the air curtain machine flows back to a dust collector through a wind pipe, the smoke which is possibly mixed in the returned air can be purified, and the clean air is re-sent onto the air blowing strip seam on the recycling-type air curtain machine through the blower, therefore, no smoke inside the safety evacuation passage can be guaranteed.

The invention provides a method and device for controlling an air purifier. A user sets an active mode of the air purifier according to daily habits in advance, wherein the active mode includes pollution items and corresponding periods; the working voltages of purification devices are determined by the air purifier according to the pollution items; when the pollution concentrations corresponding to the pollution items are high, the working voltages of the purification devices are high, and when the pollution concentrations are low, the working voltages of the purification devices are low; the voltage curves of the purification devices can be determined according to the active mode. When the working time of the air purifier is in the period of the corresponding pollution item, the corresponding pollution item is executed by the user, meanwhile, the voltage value corresponding to the pollution item is acquired by each purification device of the air purifier, and the corresponding pollution item is purified under the voltage value. According to the method and device, a corresponding purification mode of the air purifier is started at the start stage of pollution, the synchronization effect is good, the pollution items are purified in time before being accumulated, and purification efficiency is greatly improved.

The invention discloses an automotive disinfection-type air conditioner air outlet device. The device includes a shell and a baffle which is provided with a rotating shaft and arranged at an air outlet of the shell. The device is characterized in that the longitudinal section of the shell is in a fan shape, the baffle is in a fan shape, and a sterilization and disinfection mechanism is arranged atthe air outlet of the shell and comprises an air inlet passage; a draught fan is arranged at an air inlet of the air inlet passage, and an air outlet of the air inlet passage is connected with the air outlet of the shell; the air inlet passage is internally and sequentially provided with a large particle filtering screen, a small particle filtering screen, an ultraviolet light sterilization device and an anion generator from the air inlet of the air inlet passage to the air outlet of the air inlet passage. The device can adjust the structure of an air conditioner air outlet, the adjustment effect is great, the space can be effectively saved, and the effective air outlet area of a vent port is ensured. The device is reasonable in structural design, attractive in appearance and capable of effectively reducing the cost.

The invention discloses an emergency treatment device for water pollution accidents, which comprises a water taking part and a water treatment part, wherein the water taking part consists of a water pump trailer and a substance trailer, the inside of the water pump trailer is provided with a sewage pump, and the sewage pump is connected with an electric control cabinet; the substance trailer is dispersedly equipped with rubber water pipes; a water inlet of the sewage pump is connected with the rubber water pipes, and a water outlet of the sewage pump is connected with the water treatment part; and the water treatment part arranges an activated coke absorption device on a trailer, and a water inlet of the activated coke absorption device is connected with the water outlet of the sewage pump of the water taking part. The rubber water pipes connected with the water inlet of the sewage pump on the water pump trailer are placed into sewage, the sewage pump is started to convey the sewage into the activated coke absorption device arranged on the trailer for sewage treatment, and treated water is drained from a water outlet of the activated coke absorption device.

The invention discloses a wireless sensor-based mine environment harmful gas detection system. The system is composed of a plurality of detection units and a detection center computer, and realizes the multi-point simultaneous detection and condition discrimination of harmful gases in mine environment, the detection units realize detection of the characteristic parameters of harmful gases at detection points, information interaction of all the detection units and the detection center computer is realized through a wireless communication module, the detection center computer is used for processing and managing data of harmful gases in the detected mine environment, and grade discrimination of conditions of the harmful gases at the detection points, detection surfaces and the whole detection environment is realized through a plurality of groups of wavelet neural network identifiers The detection system is designed to solve the problems of low accuracy and poor real time property of present coal mine harmful detection technologies, and realizes multi-point simultaneous detection of the practical conditions of the concentration of the harmful gases in the coal mine by uniformly distributing gas inlets in different positions of the detected coal mine according to the practical conditions of coal mine detection points.