55results about How to "Monitor concentration" patented technology

The invention discloses a combustible gas explosion experiment system, which comprises a tubular explosion test cylinder. The explosion test cylinder is transversely arranged on a bracket; a front end opening and a rear end opening of the explosion test cylinder are respectively provided with an explosion-proof film with a sealed opening. The explosion test cylinder is connected with a gas supply device which injects normal-temperature and normal-pressure combustible gas into an inner cavity of the cylinder. A pressure sensor for sensing the pressure in the cylinder, a monitor for monitoring the concentration of the combustible gas in the cylinder and an igniter for igniting the gas in the cylinder are arranged on the explosion test cylinder, wherein the pressure sensor is connected with a display module for displaying a pressure value in the cylinder. The combustible gas explosion experiment system has the advantages of simple operation, low cost, and capacity of playing back flame condition of instantaneous explosion and sound of the explosion.

The invention discloses a monitoring and locating system and method for early leakage of artificial olfactory gas in air flight. An artificial olfactory system is constructed by using a high-precision gas sensor array and a pattern recognition algorithm; trace components of trace gases at the early stage of leakage are monitored and recognized in the flying process; meanwhile, parameters such as wind direction and wind speed within a target space range are monitored; and a leakage source inversion traceability locating method designed according to a leakage gas space transporting and diffusing rule is based and is combined with an unmanned flight control method, thereby realizing monitoring recognition and locating of early leakage gas. The system mainly comprises an unmanned flight control center, an attitude control and GPS locating module, an artificial olfactory system module, an atmospheric environment monitoring module, a leakage source locating module and an automatic obstacle avoidance module. The artificial olfactory system and a leakage source locating algorithm are designed. The monitoring and locating system and method disclosed by the invention have the characteristics of wide monitoring space, high monitoring precision, accurate and timely leakage early warning and locating, and the like.

The invention relates to an intelligent printer work area air quality monitoring system based on machine learning. The monitoring system comprises gas monitors, a central controller, gas recycling devices, a purifier and a displayer, wherein the gas monitors and the gas recycling devices are distributed on harmful gas generating parts on a printer; the gas monitors are used for monitoring ingredients of harmful gas and concentration of all ingredients and generating ingredient data and concentration data; the gas recycling devices are used for collecting the harmful gas and conveying the harmful gas to the purifier; the purifier is used for purifying the harmful gas and exhausting the purified gas outwards; the central controller is used for receiving the ingredient data and the concentration data output by all the gas monitors; the data are analyzed to control all the gas recycling devices to be started, and data analyzing results are output to the displayer to be displayed. The system can ensure harmful gas generated by all the areas of the printer to be absorbed and purified to the maximum extent, further reduces energy consumption and reduces operation cost.

The invention provides a circulating cooling water ozone bypass-flow treatment system and method. The circulating cooling water ozone bypass-flow treatment method comprises the following steps: introducing part of circulating cooling water in a water storage tank or filter tank into an ozone reaction tower, introducing ozone into the ozone reaction tower so that higher-concentration ozone water is formed in the ozone reaction tower, staying for some time, sending the treated ozone water solution with certain sterilization and algae removal functions into the water storage tank, and keeping the residual ozone amount of the circulating cooling water in the cooling tower or water storage tank at lower level, thereby performing the sterilization and algae removal functions. The measurement control technique of the system is based on measurement of OPR (oxidation-reduction potential) probes arranged in two different positions: one probe is arranged in the water storage tank, and used for monitoring the residual ozone amount in the circulating cooling water, thereby preventing the overhigh residual ozone amount from corroding the equipment; and the other probe is arranged in the ozone reaction tower and used for monitoring the concentration of the ozone water, thereby ensuring the water treatment effect and effectively solving the problems of corrosion, scaling and the like in the circulating cooling water.

The invention discloses a multi-point air quality measuring and controlling system for a large space. The system comprises a data acquisition module, a data processing module, an upper computer data processing and displaying system, a data communication module and a power supply module; the data acquisition module consists of a plurality of sensor groups; the data processing module comprises a microprocessor, an analog / digital (A / D) conversion module connected with the input end of the microprocessor and used for processing the real-time detection signals output by the sensor groups respectively, and an indicating lamp connected with the output end of the microprocessor and used for indicating the working state of the data processing module; and the data communication module comprises a general packet radio service (GPRS) connected with the microprocessor and GPRS wireless communication modules connected with the upper computer data processing and displaying system, wherein the GPRS wireless communication modules are in wireless communication through a GPRS network. The system is reasonable in design, convenient and fast to operate, high in intellectualization degree, flexible and convenient to use and strong in expandability, has a good using effect, and is convenient to popularize and use.

The invention discloses a kind of lacking phosphorus induction gene promoter and application. The promoter has one of the nucleotide sequences as follow: 1) DNA sequences of SEQ ID NO.1 in sequence table; 2) the nucleotide sequence that can hybrid with restricted DNA sequences of SEQ ID NO.1 in sequence table at high strict condition. The invention's lacking phosphorus induction promoter express only when lack phosphorus, control by phosphorus signal, therefore, the promoter can be used to fuse with target gene to construct the economic value vector.

The invention provides a well lid remote monitoring system based on NB-IOT and a sensor terminal. The sensor terminal is used for the well lid remote monitoring system. The system comprises a cloud monitoring platform, a mobile supervision terminal APP and a sensor terminal. A micro-control unit, a wireless communication module, an inclination angle sensor used for monitoring the inclination angleof a well lid in real time and a GPS positioning module used for monitoring the real-time position of the well lid in real time are integrated in the sensor terminal. The cloud monitoring platform isused for correspondingly analyzing the well lid state of each well lid based on the data monitored by each sensor terminal and sending corresponding alarm information corresponding to the well lid tothe APP when the well lid is analyzed to be normally closed and inclined, when the well lid is analyzed to be abnormally opened and when the well lid is analyzed to be forgotten to be closed; and thecloud monitoring platform is also used for loading the real-time position of the corresponding well lid on a GIS map after sending alarm information to the APP. The well lid remote monitoring deviceis used for increasing the monitoring strength of the well lid so as to reduce potential safety hazards.

The invention relates to a building monitoring device and particularly relates to a flying dust monitoring device used for a building, aiming at providing a flying dust monitoring device used for a building, which is simple in structure, convenient in use, intuitive in monitoring and capable of reducing monitoring error. The flying dust monitoring device used for a building comprises a base and the like, wherein a support is connected to the middle of the top of the base, a height adjusting device is arranged on the right side of the support, a transverse board is connected to the height adjusting device, two support rods are vertically connected to the middle of the top of the transverse board, the two support rods are arranged in bilateral symmetry, and a collecting basket is connected between the top ends of the two support rods. According to the invention, a gauze on a placing board rotates to stain dust and then the dust falls into the collecting basket, and the concentration of the flying dust can be mastered by observing the amount of the dust in the collecting basket, so as to achieve the aim of monitoring, thus achieving the effects of being simple in structure, convenientin use, intuitive in monitoring and capable of reducing monitoring error.

The invention discloses an urban catering oil fume monitoring probe, which includes a lead, a fixed disk, powerful magnets, a monitoring device, an ultrasonic reflection baffle plate and a circuit board. The powerful magnets are all mounted on the fixed disk, the monitoring device is installed on the fixed disk through an aluminum alloy shell, the monitoring device consists of an ultrasonic transducer and sensors, the sensors including a temperature sensor and a pressure sensor that are installed on both sides of the ultrasonic transducer, and the ultrasonic reflection baffle plate is mounted at the top of the aluminum alloy shell through a reflection baffle plate support. The urban catering oil fume monitoring probe provided by the invention has the characteristics of convenient installation and simple structure, only uses one ultrasonic transducer, measures the flow rate by detecting the frequency shift signal and measures the concentration by detecting the sound intensity, has average power consumption of less than 10mW, thus creating the condition for long distance transmission of monitoring signals, and realizing concentration and flow rate monitoring on oil fume in urban catering enterprise oil fume discharge flues and conversion of oil fume discharge amount.

The invention discloses a system for monitoring harmful gas in automobile exhaust. The system is characterized by comprising a carbon monoxide sensor, a carbon dioxide sensor and a micro oxynitride detector, which are arranged at an automobile exhaust pipe; the carbon monoxide sensor, the carbon dioxide sensor and the micro oxynitride detector are all connected with a microprocessor arranged inside an automobile; and a wireless signal transmitting device controlled by the microprocessor is connected with a wireless signal receiving device arranged at an environment monitoring department. The system is simple in structure and smart in design, and can monitor carbon monoxide concentration, carbon dioxide concentration and oxynitride concentration in the automobile exhaust at any time, and transmit the result to a monitoring system of the environment monitoring department.

A gas monitoring system operates in an electronic device. The system contains an acquisition module, a judgment module and a control module. The acquisition module is used for reading an on-site gas concentration value of the electronic device that is acquired by an analog-digital conversion device which acquires analog quantity of the on-site gas concentration from a gas sensor of the electronic device and converts the analog quantity to digital quantity of the gas concentration. The judgment module is used for comparing the obtained on-site gas concentration value and a preset gas concentration warning value so as to judge whether the on-site gas concentration exceeds standard. The control module is used for controlling the electronic device to send a warning signal when the on-site gas concentration exceeds standard. The invention also provides a gas monitoring method. According to the invention, concentration of harmful gases in an environment where a user is can be monitored, and the user can be reminded immediately to take measures for personal safety control.

The invention relates to the field of carbon dioxide capture, and discloses a method and a system for capturing CO2 by an absorption method. The method comprises the following steps: (1) enabling an absorption liquid containing an absorbent to be in contact with CO2-containing flue gas to absorb and trap CO2 so as to obtain decarburized flue gas while enabling the absorption liquid to trap CO2 toform an absorption rich solution; (2) contacting the absorption rich solution with a carrying gas phase for desorption regeneration to obtain CO2-containing desorbed gas and a CO2-removed absorption lean solution; (3) recovering the desorbed gas, and returning the absorption lean solution to the step (1) to participate in absorption and capture, wherein the use amount of the absorbent and / or watercontained in the absorption liquid in the step (1) is determined and controlled by measuring the conductivity of the absorption rich solution and the absorption lean solution on line. According to the invention, the measurement efficiency of control parameters in the CO2 capture process through the measurement absorption method can be improved, the CO2 capture process can be better monitored fora long period, and energy consumption is reduced.

The invention discloses disinfection apparatus of a dehydrated vegetable automatic production line. The disinfection apparatus comprises conveying belts and a disinfection box, wherein an upper watertank and a lower water tank are sequentially arranged inside the disinfection box from top to bottom, the conveying belts communicating with the outside are arranged in the upper water tank and the lower water tank respectively, overflow pipes are arranged on the side walls of one ends of the upper water tank and the lower water tank, a plurality of evenly-distributed water spraying pipes are arranged above the upper water tank, a liquid inlet pipe is connected with the side wall of one end of the disinfection box, a joint of the liquid inlet pipe and the disinfection box is located below theupper water tank, the liquid inlet pipe is connected with an external disinfectant storage tank, and a liquid inlet pump is installed on the liquid inlet pipe. According to the disinfection apparatus,through setting the upper and lower water tank structure, the disinfection effect of vegetables can be guaranteed under the condition that a land-occupied area is saved, the concentration of a disinfectant can be monitored, and the disinfection efficiency is high.

The invention discloses a solute clearing monitoring system of blood purification equipment. The solute clearing monitoring system comprises a blood loop, a blood filter, a displacement liquid loop, a dialysate supply switching loop and a waste liquid discharging loop, wherein a first electric conducting detection device is connected in series between a second inlet of the blood filter and the dialysate supply switching loop; a second electric conducting detection device is connected in series between a second outlet of the blood filter and the dialysate supply switching loop. The invention also provides a solute clearing monitoring method of the blood purification equipment; the method comprises the following steps of (1) respectively detecting the electrical conductivity of the second inlet and the second outlet of the blood filter through the first electric conducting detection device and the second electric conducting detection device every other set time; (2) obtaining the clearing rate of dialyzate ions according to an expression; (3) calculating a urea clearing kinetic model. The system and the method have the advantages that the monitoring on the concentration of the cleared solute in real time can be realized; the concentration of concentrated electrolyte A and B does not need to be changed in the real-time monitoring process.

The invention discloses a carbon dioxide monitoring warning sensor. The carbon dioxide monitoring warning sensor comprises a sensor body; the sensor body comprises a housing, an operation panel, a display screen and a controller; one side of the housing is provided with the operation panel, the top of the operation panel is provided with a level signal indicator lamp, the bottom of the level signal indicator lamp is provided with a working power indicator lamp, the bottom of the working power indicator lamp is provided with a loudspeaker, the bottom of the loudspeaker is provided with a switch, one side of the operation panel is provided with a display screen, one side of the bottom of the housing is provided with a storage battery, the bottom of the housing is provided with the controller, the controller is connected with an output signal fine-tuning unit, one side of the output signal fine-tuning unit is provided with a temperature sensor, one side of the temperature sensor is provided with a gas detecting sensor head, and one side of the gas detecting sensor head is provided with a level signal adjusting unit. Through the loudspeaker, the carbon dioxide monitoring warning sensorcan broadcast concentration of carbon dioxide in air in real time, thereby bring convenience to people.

The invention discloses a formaldehyde detector. The formaldehyde detector comprises a fixed plate and a first sliding plate located on the fixed plate, the first sliding plate can move up and down, aright end of the first sliding plate is fixedly provided with a sealed box, a work box is fixedly arranged on the sealed box, a working chamber is arranged in the work box, an air pump is fixedly arranged in the working chamber, an admission pipe is fixedly arranged on the air pump, and the admission pipe penetrates to an external side of the work box through the working chamber. The formaldehydedetector can monitor concentration of formaldehyde in the air in sealed space more simply, according to difference of concentration of the formaldehyde, the formaldehyde detector converts the formaldehyde of different concentration into light of different intensity, a light receptor converts the light into current and provides the current to a motor, by observation on difference of liquid level height, concentration of the formaldehyde in the air can be simply and clearly detected. The formaldehyde detector also can change altitude of a detection mechanism to detect concentration of the formaldehyde in the air at different altitudes in the same space.

The invention discloses an anesthesia catheter, and particularly discloses a suction anesthesia catheter capable of retaining spontaneous respiration of a patient. The anesthesia catheter comprises a nasal cavity insertion end and a device connection end, and an anesthesia catheter body is provided with an air inlet catheter, a negative pressure suction catheter, an end-expiratory gas concentration monitor connecting catheter, an air bag and an air bag catheter. When respiration anesthesia is carried out by means of the anesthesia catheter, the anesthesia catheter has the advantages that spontaneous respiration of the patient can be retained, and the upper airway is kept from impeding; the anesthesia catheter cannot occupy the mouth cavity, the brain and other surgical spots; the anesthesia catheter does not pass the glottis, so that the patient conveniently pronounces, and leakage of inhalation anesthetics cannot be caused; the concentration of end-expiratory CO2 and anesthesia gas can be conveniently and accurately monitored.

The invention relates to an intelligent ultrasonic cleaning system and method for an air distribution pipeline. The system comprises a heat recovery fresh air machine, an air pipe closing valve, an air pipe, an air pipe heating, an adjustable exterior wall shutter, an intake air filter, an outdoor air quality sensor, an outdoor temperature sensor, an air conditioning board, a drainage exit, a heating water supply pipe, a heating water return pipe, an exhaust outlet, a power supply and an ultrasonic generator, an ultrasonic vibration submarine harbor, an ultrasonic vibration submarine, a closedconnector, a water-escape electrically operated valve, a water escape pipe, an ultrasonic transmission, power supply and signal line, a system controller and a water leakage sensor. The invention also relates to the intelligent ultrasonic cleaning method for the air distribution pipeline. The effect of water cleaning and cleaning liquid cleaning of the system and the method is far between than that of dry cleaning.

The invention discloses a multifunctional safety hat high in strength. A controller, a combustible gas sensor and a locating module are arranged on the outer wall of a hat shell, the combustible gas sensor and the locating module are connected with the input end of the controller separately, and current combustible gas concentration information and position information are sent to the controller;the controller compares the received current combustible gas concentration information with a set value, and if the current combustible gas concentration information is not matched with the set value,alarm information is output outwards. By means of the safety hat, when operating personnel enter a mine, pipe equipment or other sealed spaces for work, the combustible gas concentration in a workingspace can be effectively monitored, the safety of operating personnel is fully guaranteed, the working position of the operating personnel is monitored in real time, the combustible gas concentrationsensor and the locating module are also used in cooperation, and a leaking point of harmful gas can be accurately located to improve the efficiency of repair and trouble shooting.

The invention relates to a selectivity sensor for measuring volatility amine, hydrazine and derivatives thereof by adopting a surface thermal ionization theory, and comprises the assembly such as an emitting electrode, and a collector and the like in a shell, wherein the emitting electrode is prepared from molybdenum or platinum or alloy materials and is a filament-winding or cylindrical structure; a heating rod heats a metal electrode of the emitting electrode and supports the emitting electrode; or the emitting electrode and the collector are two plates arranged in parallel. When the emitting electrode is heated to 350-480DEG C in the air, the air, amine or hydrazine or other compositions diffuse in the sensor, are collided with the surface of the emitting electrode, and only if the surface ionization of the amine and the hydrazine generates a positive ion, the measurement is carried out. The minimum measured amount of the sensor to the tertiary amine is less than 2 mu g / m<3>, and the invention can be used for on-site measurement of a compound of the volatility amine and toxic amine.

The invention provides a poultry remote monitoring management system based on the Internet of Things technology, and the system comprises chicken house units, a control management unit and a user terminal, wherein the chicken house units are terminals for information acquisition and instruction execution of the whole system and are places for free-range chickens to rest and lay eggs, and the control management unit is used for monitoring the state of each chicken house unit, providing an operation interface for on-site breeding management personnel, and inputting the data into a local database; the chicken house units and the control management unit construct a wireless communication network through a LoRa wireless communication technology; the control management unit sends data to the cloud platform in an NB-IoT wireless communication mode; and the user terminal logs in the cloud platform to monitor the real-time condition of local chicken breeding. According to the invention, large-scale and intelligent local chicken breeding and traceability of products can be realized.

The invention provides a dissolved oxygen monitoring system based on a hydrogel optical fiber. The system is used for monitoring the concentration of dissolved oxygen. The system comprises a light source; a band-pass optical filter which is attached to the light source and is used for filtering stray light to obtain exciting light with the same wavelength; the hydrogel optical fiber, wherein one end of the hydrogel optical fiber is connected with the band-pass optical filter, so that the exciting light after the stray light is filtered out enters the hydrogel optical fiber for sensing dissolved oxygen in a living body; a high-pass optical filter, wherein the high-pass optical filter is connected with the other end of the hydrogel optical fiber, so that the exciting light emitted from the hydrogel optical fiber passes through the high-pass optical filter to be filtered out; and a photoelectric detector, wherein the photoelectric detector is connected with the high-pass optical filter, so that residual light after the exciting light is filtered enters the photoelectric detector for detecting the intensity of a fluorescence signal, and the concentration of the dissolved oxygen is further monitored through the change of the intensity of the fluorescence signal. The hydrogel optical fiber is a hydrogel optical fiber containing a fluorescence indicator.

The invention discloses a liquid chromatography-tandem mass spectrometry method and a kit for accurately determining the content of five immunosuppressants in a dry blood spot. The method comprises the following steps: 1) uniformly mixing an internal standard working solution with an organic solvent to obtain an extracting solution; 2) extracting the dry blood spot of the sample to be detected by using the extracting solution, centrifuging to obtain a supernatant I after the extraction is finished, blow-drying the supernatant I with nitrogen, re-dissolving to obtain a solution II, whirling, centrifuging, and detecting; and 3) detecting the solution II by adopting a liquid chromatography-tandem mass spectrometry method, wherein the internal standard working solution contains a cyclosporin A isotope internal standard substance, an everolimus isotope internal standard substance, a sirolimus isotope internal standard substance and a mycophenolic acid isotope mixed internal standard substance. According to the method, during detection, five immunosuppressants can be quantified at a time only by 6 microliters of a blood sample, the pretreatment method is simple and rapid, the operation time is saved, the immunosuppressive blood concentration can be effectively monitored according to the indexes, and more complete treatment medication information can be obtained in time.

The invention provides a test system for simulating all-weather influence of vegetation on water, gas, heat and force coupling migration of an unsaturated soil covering layer or a side slope. The test system comprises a model tank for accommodating a vegetation-containing landfill covering layer or side slope model, the model tank is divided into a part A and a part B: a landfill gas introduction device is arranged at the bottom of the part A of the model tank; the model groove A part is provided with a heating device; the side wall of the model groove A part is coated with a heat insulation material; the model groove B part is provided with a ventilation system; a temperature controller is externally connected; the model groove B part is provided with a weather system; the main body of the water, gas, heat and force coupling model of the indoor all-weather vegetation-containing soil covering layer or the side slope is the covering layer or the side slope; in the test process, the landfill gas introduction device simulates the landfill gas to enter the covering layer; according to the invention, mutual influence of moisture-landfill gas-heat energy-mechanics under various weather conditions can be simulated at the same time, and the problem of simulation of drought and rainfall circulation in a test is solved.

The invention discloses a methane mixed gas purification device on the basis of chemical reaction and a method for applying the methane mixed gas purification device. The methane mixed gas purification device comprises a methane collection and purification mechanism, a methane mixed gas drying and layering mechanism and a methane storage mechanism. A gas outlet end of the methane collection and purification mechanism is connected with a gas inlet end of the methane mixed gas drying and layering mechanism, and a gas outlet end of the methane mixed gas drying and layering mechanism is connectedwith a gas inlet end of the methane storage mechanism. The methane mixed gas purification device and the method have the advantages that the methane mixed gas purification device is simple in structure and reasonable in design, coal mine methane mixed gas can be purified by the methane mixed gas purification device, the methane utilization efficiency can be improved, methane pollution can be reduced, and the like.

The invention relates to a tartary buckwheat cultivation greenhouse, and belongs to the technical field of tartary buckwheat planting. The tartary buckwheat cultivation greenhouse comprises a greenhouse body, a power generation device, a spraying device, a rainwater collecting device, a fluorescent lamp, a heater, a water storage pond and a greenhouse door. Wherein the spraying device comprises an irrigation rod, a left slide way, a right slide way, a pulley, a spraying head, a joint and a water inlet pipe; the power generation device comprises a solar electromagnetic panel, a storage battery, an inverter and a controller; the rainwater collecting device comprises a collecting tank, a collecting hopper and a pipeline. The solar electromagnetic panel utilizes solar energy to generate power and supply power to the fluorescent lamp, the heater, the spraying device, the temperature sensor and the humidity sensor, and climate adjustment in the greenhouse is facilitated. The carbon dioxide alarm can monitor the concentration of carbon dioxide in the greenhouse, and measures can be taken in time; the rainwater collecting device can collect and utilize rainwater, the rainwater contains rich nutrient elements, growth of tartary buckwheat is facilitated, meanwhile, accumulation of the rainwater on the greenhouse is reduced, and the service life of the greenhouse is prolonged.

A gas monitoring system operates in an electronic device. The system contains an acquisition module, a judgment module and a control module. The acquisition module is used for reading an on-site gas concentration value of the electronic device that is acquired by an analog-digital conversion device which acquires analog quantity of the on-site gas concentration from a gas sensor of the electronic device and converts the analog quantity to digital quantity of the gas concentration. The judgment module is used for comparing the obtained on-site gas concentration value and a preset gas concentration warning value so as to judge whether the on-site gas concentration exceeds standard. The control module is used for controlling the electronic device to send a warning signal when the on-site gas concentration exceeds standard. The invention also provides a gas monitoring method. According to the invention, concentration of harmful gases in an environment where a user is can be monitored, and the user can be reminded immediately to take measures for personal safety control.

The invention discloses a cutting fluid monitoring method, device and system. The method includes the steps: acquiring the concentration value and the specific gravity value of a cutting fluid to be detected; judging whether the cutting fluid to be detected is qualified or not according to the concentration value and the specific gravity value of the cutting fluid to be detected; sending a first prompting message for prompting that the cutting fluid to be detected is disqualified when the cutting fluid to be detected is disqualified. The method solves the problem that cost is wasted as the concentration and the specific gravity of the cutting fluid do not meet working requirements in correlation techniques.

The invention discloses a ventilation system, which relates to the field of ventilation and ventilation. The main purpose is to monitor the oxygen concentration in a foundation pit in real time, and to supply air to the foundation pit in real time or stop the air supply according to the monitoring result. The main technical solution of the present invention is: the ventilation system includes: at least one monitoring device, a control device and a ventilation device, the monitoring device is used to monitor the gas concentration at a predetermined position; Gas concentration signal, and generate control instructions according to the received gas concentration signal; the ventilation device is connected with the control device, and performs ventilation work according to the control instruction of the control device. The ventilation system of the present invention can monitor the oxygen or carbon dioxide in the foundation pit in real time, and control the ventilation device to ventilate the foundation pit and stop ventilation according to the monitored gas concentration data, realizing real-time monitoring and real-time air supply, effectively protecting The life safety of the construction personnel is high, the work efficiency is high, and resources are saved.

The invention belongs to the fire industry, and particularly relates to a three-dimensional intelligent fire extinguishing and rescuing device for tunnel fire. The three-dimensional intelligent fire extinguishing and rescuing device for tunnel fire comprises a tunnel aerial fire extinguishing vehicle, a tunnel ground fire extinguishing vehicle and a tunnel ground rescuing vehicle, wherein the aerial fire extinguishing vehicle is arranged above two side walls in a tunnel; an aerial fire extinguishing vehicle water tank is fixedly arranged above an aerial fire extinguishing vehicle power batterypack; a ground fire extinguishing vehicle limiting guide wheel is embedded into a ground fire extinguishing vehicle limiting guide rail; a ground fire extinguishing vehicle limiting guide hydraulic support arm is arranged in the middle of a top surface frame of a ground fire extinguishing vehicle body; the tunnel ground rescuing vehicle is arranged on the ground of pedestrian passageways on bothsides of the tunnel; and a rescuing vehicle limiting guide hydraulic support arm is fixedly arranged above a rescuing vehicle body. According to the device, fire extinguishing and rescuing devices arearranged along the two side walls of the tunnel, so that the safe running space of each lane in the tunnel is not occupied. The fire extinguishing vehicle can arrive at a fire scene rapidly at firsttime after receiving an instruction, so that fire extinguishing operation can be implemented in time at the initial stage of fire.