356 results about "Gaseous detectors" patented technology

The invention provides an intelligent fire prevention and control fire-fighting management system and method for a lithium battery energy storage power station, and relates to the technical field of data processing, and the method comprises the steps: arranging a multi-level temperature sensor, a gas detector and a smoke detector in and outside a battery module, and collecting and forming multi-source monitoring data; performing time sequence rate analysis, and if a preset condition is met, generating early warning data; in combination with sensor matrix distribution in the battery module, spatial cross comparison is executed to obtain abnormal positioning data, and false anomalies are eliminated through multi-point consistency verification; generating a directional processing instruction corresponding to the injection unit, and setting injection data in the processing instruction; the spraying unit is controlled to release an atomized fire extinguishing medium, so that the medium forms a permeation flow field in the gaps of the battery cells, and treatment feedback data is acquired and formed; performing trend analysis, and if the trend is not enough to recover to the preset safety range, generating a secondary processing instruction; according to the invention, the autonomy and accuracy of fire control management are improved.

The invention discloses a gas detector for air pollution detection, and belongs to the technical field of gas detection.The gas detector comprises an outer shell and an inner shell which are arranged in a sleeved mode and used for detecting gas to be detected; the adjusting mechanism is used for adjusting the height and angle of the detection mechanism; wherein an inner air inlet cavity is formed in the inner shell, and an outer air inlet cavity is formed between the outer shell and the inner shell; a sensor is mounted on the inner wall of the inner air inlet cavity; an exhaust pipe communicated with the inner air inlet cavity is arranged on the outer shell, and a fan is mounted in the exhaust pipe; a rotating ring is rotationally arranged on the radial inner wall of the outer shell and used for adjusting the opening and closing states of the inner air inlet cavity, the outer air inlet cavity and the exhaust pipe. The inner gas inlet cavity is a core detection area, a sensor is installed to make direct contact with to-be-detected gas, and the outer gas inlet cavity is a split-flow filtering area and serves as a temporary storage area of follow-up impurities. The exhaust pipe is communicated with the inner air inlet cavity, the fan is arranged in the exhaust pipe, and the fan provides active air suction and exhaust power and supports reverse blowing and cleaning of residual impurities in the cavity.

The utility model discloses a CH4 gas detector of an optical device, relates to the field of gas detection of optical devices, and provides the following scheme aiming at the problem that in the existing practical application, a packaged 2.0 mm window flat window pipe cap is not particularly ideal in product performance index when being used by a client, the CH4 gas detector comprises a pipe seat, a ceramic gasket is connected with the middle part of the upper end of the pipe seat, and the upper end of the ceramic gasket is provided with a hollow cavity; a ceramic gasket is arranged in the tube base, the ceramic gasket is of a detachable adjusting structure, a chip is connected to the upper end of the ceramic gasket, a coated glass sheet is connected to the outer side of the chip, a tube shell is connected to the outer end of the coated glass sheet and the four sides of the upper portion of the tube base, and a mm light-transmitting window is formed in the middle of the upper end of the tube shell. According to the utility model, the structure is novel, the sensitivity and accuracy of the detector are improved by adjusting the thickness of the ceramic gasket and controlling the height from the photosensitive surface of the chip to the glass surface, and the optical performance of the detector is improved by matching with the 3.0 mm light-transmitting window arranged at the middle part of the upper end of the tube shell.

The present disclosure relates to a dust-removed odor sampling device for oil shale and a photoelectric fused method for underground in-situ exploration and thermal evolution stage monitoring of oil shale, belonging to the technical field of oil shale in-situ exploration and exploitation. The present disclosure includes: establishing an dust-removed odor sampling device, which includes an imitation sandfish lizard dustproof chamber, an imitation leaf filter membrane, a single-chip microcomputer controller, a dust collection box, a solenoid valve and an air pump; using a redesigned FB score and a feature selection algorithm to optimize a gas sensor array and reduce the apparatus volume and energy consumption; and combining the optimized gas sensor array with the optical gas detector to realize the underground in-situ exploration and thermal evolution stage monitoring of oil shale by the photoelectric fusion method.

A gas detection device for detection of one or more gas analytes in an environment includes a housing including an inlet via which gas to be sampled from the environment enters the housing, a control system within the housing comprising a processor system and a memory system in communicative connection with the processor system, and one or more gas sensors within the housing in fluid connection with the inlet and in communicative connection with the control system. Each of the one or more gas sensors is independently responsive to one of the one or more gas analytes. The control system is configured to control flow rate of gas from the environment through an accessory device assembly including one or more accessory devices in fluid connection with the inlet on the basis of data for the accessory device assembly in fluid connection with the inlet.

The invention discloses a battery pack intelligent fire extinguishing system based on multistage thermal runaway early warning, which comprises a sensing monitoring module, a data processing module, an execution mechanism module and a communication interaction module, the sensing monitoring module comprises a distributed temperature sensor array for monitoring the surface temperature of the battery in real time and detecting abnormal temperature rise, a voltage / current monitoring circuit for detecting the voltage fluctuation of the battery and identifying the risk of internal short circuit, and a multi-gas detector for detecting the CO / CO / H concentration and judging the initial decomposition reaction of the electrolyte. According to the invention, three-level early warning can be carried out at the potential risk stage of thermal runaway, the initial stage of thermal runaway and thermal runaway outbreak, so that early warning or fire-fighting treatment can be carried out in advance, and disaster expansion is avoided; the situation of false alarm caused by temperature rise in the battery charging process can be reduced, and the early warning accuracy of the system is improved.

The invention discloses a method for determining the width value of an avalanche air gap of a gas detector and a related device, and belongs to the technical field of detectors. The method comprises the following steps: sequentially obtaining a plurality of energy spectrum groups of an anode reading plate under a plurality of different voltages when the anode reading plate is irradiated by a radioactive source; obtaining an original electron number; for the energy spectrum group corresponding to each voltage, obtaining the detector gain corresponding to the voltage based on the energy spectrum group and the primary electron number; determining a gas parameter and a photon feedback item corresponding to the voltage; determining a width value of an avalanche air gap under the voltage based on a detector gain corresponding to the voltage, a gas parameter corresponding to the voltage and a photon feedback item corresponding to the voltage; and determining the final width value of the avalanche air gap of the gas detector based on the width values of the avalanche air gaps under the plurality of different voltages. According to the invention, the accuracy of the determined width value of the avalanche air gap can be improved, so that the avalanche air gap of the gas detector is accurately calibrated.

The utility model provides a gas detector, which comprises a shell provided with an explosion-proof cavity and an opening which are communicated with each other; the connecting plate is detachably arranged at the opening, the connecting plate can block the opening, and the connecting plate and the shell are matched to form an anti-explosion structure; the first circuit board is fixed to the side, close to the shell, of the connecting plate, and the first circuit board is arranged in the anti-explosion cavity; the detection assembly is detachably arranged on the side, away from the shell, of the connecting plate, the detection assembly is provided with a detection cavity and a sensor body, the sensor body is located in the detection cavity and used for detecting gas, the sensor body is electrically connected with the first circuit board, and the detection cavity and the anti-explosion cavity are independently arranged. Through the technical scheme provided by the invention, the problem that a sensor in a gas detector is inconvenient to maintain and replace by a worker in the prior art can be solved.

The high-precision NDIR gas sensor comprises a gas detector, a signal processing circuit, a microprocessor with an analog-to-digital converter (ADC), a light source driving circuit, a power conversion circuit, a communication module and circuit, a screen driving circuit and a display. The signal processing circuit carries out preliminary amplification and analog filtering on output signals of the detector through an instrument amplifier, a band-pass filter and isolation, noise can be effectively removed, and the characteristics of target signals can be enhanced. A microprocessor with an analog-to-digital converter (ADC) collects signals and achieves digital filtering through FFT conversion, the signal quality is further optimized, and finally the detected gas concentration value is displayed on a display screen in real time. The system can realize high-efficiency signal processing on the premise of ensuring real-time performance, has the advantages of simple structure, easy realization, low cost and the like, and is suitable for various signal processing scenes including but not limited to the fields of industrial automation, sensor data processing, medical signal analysis and the like.

A high-position gas detector calibration device belongs to the technical field of high-position gas detector calibration equipment and comprises a calibration cover, a connecting rod, a plurality of extension rods and an outer joint, the calibration cover is detachably mounted at the top of the connecting rod, and external threads are arranged on the outer surface of the lower end of the connecting rod and the outer surfaces of the lower ends of the extension rods. Nuts are fixedly installed at the top ends of the connecting rods, the connecting rods are connected with the extension rods through screw joint matching of the external threads and the nuts, the extension rods are connected together through matching of the external threads and the nuts, air bins are arranged in inner cavities of the connecting rods, and the air bins are communicated with an inner cavity of the calibration cover. According to the utility model, the calibration cover can be buckled at the position of the gas detector on the ground, the calibration is carried out by utilizing the inner pipes to convey the calibration gas, the existing mode of calibrating the high-position gas detector by climbing can be replaced, and the operation is safer and more reliable.

The utility model provides a toxic gas detector control circuit capable of resisting electromagnetic interference, which comprises a power supply voltage regulation circuit, a temperature signal acquisition circuit, a sensor voltage regulation circuit, a sensor acquisition control circuit and a gas detector main control circuit which are in power supply connection. The gas detector main control circuit is in control connection with the 485 communication circuit, the acousto-optic prompt circuit, the LED state display circuit and the digital display screen, the gas detector main control circuit is in communication connection with the sensor acquisition control circuit, and the sensor acquisition control circuit is in control connection with the gas signal acquisition circuit and the temperature signal acquisition circuit. A TVS (Transient Voltage Suppressor) tube, a common mode inductor and a diode are arranged in the power supply voltage adjusting circuit; and a TVS tube and a diode are also arranged in the gas detector main control circuit. The poisonous gas detector has the beneficial effects that the anti-electromagnetic interference capability, the reliability and the stability of the poisonous gas detector when the poisonous gas detector is independently used are greatly improved.

The invention relates to the technical field of fire operation supervision, in particular to a fire operation management and control system and method, and the system comprises a management and control platform, fire operation equipment, an intelligent data collection device, a deployment and control ball, and a gas detector. The management and control platform comprises an enterprise terminal, an APP mobile terminal and a supervision platform. An enterprise transmits fire work ticket information to the supervision platform through an enterprise terminal, and the supervision platform controls all fire work behaviors, so that supervisors can quickly master fire work reporting, work progress, violation behaviors and other information in an area under administration. And illegal behaviors such as unreported fire operation arbitrarily, operation personnel who do not hold the certificate to work or operation certificates are not in the validity period and arbitrarily change operation places exist, so that data support is provided for precise supervision and law enforcement of supervision departments.

A vacuum leak detector has a housing enclosing a suction chamber, a vacuum pump evacuating the suction chamber, and a gas detector connected to the suction chamber. The housing has a test leak with a selectively gas-permeable membrane. The test leak connects the outer atmosphere of the housing with the suction chamber.

An indoor air cleaning system is disclosed and includes at least one gas detector, at least one cleaning device and a cloud computing server. The gas detector is disposed in an indoor space for detecting air pollution and outputting an air pollution information. The cleaning device includes a fan, a filter and a sterilization component. The fan is enabled to guide airflow passing through the filter and the sterilization component. The cloud computing server receives the air pollution information, stores to a database, and intelligently outputs a control command to the cleaning device according to the air pollution information, so that the fan of the cleaning device generates a directional circular airflow, and the air pollution is rapidly guided to pass through the filter and the sterilization component multiple times for filtration and sterilization. Consequently, gas state in the indoor space reaches the cleanliness of the clean room classes.

The invention discloses a multipurpose pen-shaped scanning proton beam detection device and method, and relates to the field of proton therapy detection.In the device, a mounting support is arranged on a machine head of a proton therapy machine and rotates along with a rotating rack of the proton therapy machine; the microstructure gas detector is used for measuring proton information; the detector and motion control part is used for receiving a detection instruction issued by the remote control center; driving the microstructure gas detector and / or the lead point to move to a preset position according to the detection instruction; collecting proton information corresponding to the preset position and transmitting the proton information to the remote control center; the detection instruction is determined according to detection requirements; and the remote control center is used for performing analysis based on the proton information to obtain a detection result. According to the invention, multiple measurements can be completed, one machine has multiple purposes, and the measurement precision can be ensured while the working efficiency is improved.

The invention relates to the technical field of mainboard testing tools, in particular to a gas detector mainboard testing tool which comprises a testing table, a controller is connected to the end face of the testing table, a centering fixing structure is connected to the end face of the controller, and a movable touch panel structure is connected to the centering fixing structure. The end face of the test board is connected with a tester through a connecting seat, the centering fixing structure comprises a connecting bottom plate, and the connecting bottom plate is connected to the end face of the controller. Therefore, an electric telescopic rod and a driving motor in the middle fixing structure and the movable touch panel structure can be used for accurately and repeatedly positioning and fixing the detector main board and enabling an electric guide column to be in close contact with an electric element on the detector main board through a transmission structure, and the probability that the detector main board is damaged when the detector main board is tested is reduced. The accuracy of the detector mainboard during testing is influenced by external factors.

The invention discloses an ultrasonic oil smoke detector which comprises a support, an ultrasonic transmitter, an ultrasonic receiver and a main board, wherein the ultrasonic transmitter, the ultrasonic receiver and the main board are installed on the support. The ultrasonic transmitter faces the ultrasonic receiver; the mainboard comprises a power interface, a main control chip connected with the power interface, and a clock circuit and an operational amplifier circuit which are electrically connected with the main control chip; the ultrasonic transmitter is electrically connected with the main control chip, the ultrasonic receiver is connected with the input end of the operational amplifier circuit, and the output end of the operational amplifier circuit is electrically connected with the main control chip. According to the invention, the use of devices such as a temperature sensor and a pressure sensor which are greatly influenced by conditions such as temperature and humidity can be avoided, and the accuracy and sensitivity of the gas detector are improved by directly utilizing the characteristic that ultrasonic waves are not influenced by temperature and humidity.

The invention discloses an underground coal mine smoke concentration early warning method and system, and belongs to the technical field of fire early warning. The first wavelength signal and the second wavelength signal of the underground coal mine are acquired, and the target Sott particle size is calculated by adopting a statistical method, so that the data precision is improved. The method comprises the following steps: setting a first threshold and a second threshold, judging an interval where a target Sott particle size is located, judging whether a roadway where a detection unit is located is normal or not according to the interval, collecting multiple groups of continuous first gas concentrations and second gas concentrations in combination with a gas detector, and calculating a first concentration change rate and a second concentration change rate; therefore, the underground state of the coal mine is determined, and the accuracy of smoke alarm is improved. Furthermore, parameters of the smoke detector are periodically updated in combination with equipment noise, the accuracy of data acquisition of the equipment is improved, and the probability of false alarm is reduced.

1. The name of the product of this design: Gas detector (AX02). 2. Purpose of the product with this appearance design: The product with this appearance design is used to detect the concentration of flammable, toxic and harmful gases in the environment, judge the alarm status, and upload the concentration and alarm signal to the combustible gas alarm controller to issue an alarm signal. 3. The design key point of this appearance design product lies in the shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture.

This invention proposes a capacitive wireless charging portable gas detector, comprising a charging base that matches the portable gas detector. The charging base contains a power supply circuit, a control circuit, and a first coupling electrode plate. Both the power supply circuit and the control circuit are connected to the first coupling electrode plate. The control circuit generates a high-frequency PWM signal as a drive signal for the first coupling electrode plate. The portable gas detector contains a second coupling electrode plate, a charging circuit, and a battery. The second coupling electrode plate matches the first coupling electrode plate, and the closer-proximity second coupling electrode plate forms a capacitor structure with the first coupling electrode plate. The second coupling electrode plate induces a charge and is connected to the battery through the charging circuit. This invention utilizes coupling electrode plates instead of inductors, eliminating the need for large internal inductance. The coupling electrode plates inside the portable gas detector are separate and cannot form a capacitor, reducing the difficulty of intrinsically safe explosion-proof design, improving device safety, and extending the service life of the portable instrument.

To provide a gas detector that can easily detect mixed gases with high accuracy, and that can calibrate the gas sensor without using actual gas. [Solution] The system is configured to include a sensitivity setting unit 121 that sets the sensor sensitivity of the gas sensor 110 for a gas to be measured, selected from among multiple types of mixed gases in which the first to nth gas components (where n is an integer of 2 or more) are mixed in different proportions, based on composition data relating to the gas to be measured and sensitivity data relating to the sensor sensitivity of the gas sensor 110 for each of the first to nth gas components, and a calibration curve data acquisition unit 122 that acquires calibration curve data for the gas to be measured based on composition data relating to the gas to be measured and reference calibration curve data for each of the first to nth gas components.

A gas detector suitable for use in harsh environments where gas sensors are likely to deteriorate, while suppressing an increase in the number of parts and an increase in the size of the device, is provided. [Solution] This gas detector 100 is a gas detector that detects a target gas, and comprises a sensor section 1 including multiple gas sensors 10 of the same type mounted on the same substrate 14, and a control section 2 that detects the target gas based on the output values ​​30 of the multiple gas sensors 10, and the control section 2 is configured to perform control to correct the output value 30 of a gas sensor 10 that has deteriorated, based on the output values ​​30 of the multiple gas sensors 10.

The utility model relates to the technical field of gas detectors, in particular to a gas detector easy to maintain, which comprises a mounting seat and a detector body, a sliding rod is fixedly mounted in the mounting seat, a sliding block is slidably connected to the surface of the sliding rod, a spring is sleeved on the surface of the sliding rod, and a lower connecting seat is fixedly mounted on the surface of the sliding block. According to the utility model, the inner hexagon screws in the first screw hole and the second screw hole are taken down, the detector body is pressed downwards, the detector body drives the mounting plate to press downwards, the connecting rod rotates when the mounting plate presses downwards, the connecting rod rotates and drives the sliding block to move on the sliding rod, and the sliding block drives the fixed block to move. The fixing block drives the pressing block to move, when the pressing block is far away from the positioning edge, the detector body is separated from the mounting base, and personnel can easily take down the detector body from the mounting base so that the personnel can quickly maintain and replace the detector body.

1. The name of the design product: composite gas detector (PS-712). 2. The use of the design product: for a composite gas detection instrument tool. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

The utility model relates to a dangerous goods storehouse which comprises a storehouse body, a ventilation assembly and an early warning assembly. The ventilation assembly comprises a ventilation pipeline, a fan and a ventilation column body; the ventilation pipeline is provided with at least one communicating end and an air outlet end; at least one communication end is communicated with the storehouse body, and one communication end is communicated with the ventilation column body; the air outlet end is communicated with the outside; the fan is arranged on the ventilation pipeline and is communicated with the ventilation pipeline; a ventilation opening is formed in the lower part of at least one plate far away from the inner wall of the storehouse body; the early warning assembly comprises an alarm and a plurality of gas detectors; the alarm is arranged on the outer wall of the storeroom body and connected with the outer wall of the storeroom body; the plurality of gas detectors are arranged on the ventilation column body and are connected with the ventilation column body; through the arrangement of the ventilation column bodies, the gas detectors are arranged on the ventilation column bodies, and the arrangement positions of the detectors are concentrated, so that the overall layout of the warehouse is clean and tidy, and it is guaranteed that emergency situations can be handled in time.

The invention discloses a gas detection performance testing device for automatic gas detection equipment and a use method of the gas detection performance testing device, which are applied to the field of detection performance testing of the gas detection equipment and aim at solving the problem that an existing equipment gas detection performance testing device cannot evaluate the minimum detectable concentration and the minimum distinguishable concentration of gas detector equipment. The detector performance of the gas detector cannot be reflected, and the performance of equipment cannot be evaluated scientifically and objectively; the gas detection performance testing device of the automatic gas detection equipment comprises a light source simulation system, a precise gas concentration measurement and control system, an optical collimation system, an image acquisition system and a gas detection performance system, targets in various gas concentration environments are effectively simulated through a precise gas concentration control target in the device, and the gas concentration detection unit and the gas concentration control unit are used for real-time measurement and feedback control of the gas concentration, so that the gas concentration can be stably adjusted in an extremely small range.

The utility model relates to a fixed gas detector with adjustable air inlet pressure, which belongs to the technical field of gas detectors and comprises a mounting plate, a gas detector body is arranged on the front side of the mounting plate, three connecting pipes are fixedly connected onto the gas detector body, and protection mechanisms are arranged in the three connecting pipes. An adjusting assembly is arranged on the mounting plate, and two limiting assemblies are arranged on the mounting plate. According to the gas inlet pressure adjustable type fixed gas detector, by arranging the gas pressure control mechanism, the effect of adjusting the pressure of gas is achieved, the gas enters the gas detector body at a preset pressure value to be detected, and by arranging the protection mechanism, the effect of filtering the gas is achieved; therefore, impurities in the gas are prevented from entering the gas detector body to cause damage, the use of a user is facilitated, and the practicability of the gas detector is improved.

1. The name of the design product: gas detector. 2. The use of the design product: gas monitoring display alarm, gas collection remote analysis for open and closed environment. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

A gas detector is provided. The gas detector has a housing defining a cavity and a display module is disposed within the cavity. The display module has a first PCB, a base plate, a metal enclosure, and a thermal gap pad. The metal enclosure is positioned on top of the base plate, and the thermal gap pad is disposed in between the metal enclosure and the second PCB. The second PCB is disposed on top of the thermal gap pad.