87 results about "Oxygen sensor" patented technology

This invention provides a catalytic converter that can stably improve the purification rate of a three-way catalytic converter. [Solution] The catalytic converter 2 comprises a three-way catalytic converter 5 for purifying engine exhaust gas, a baffle plate 6 having a plurality of holes through which exhaust gas passes, and a case 3 that houses the three-way catalytic converter 5 and the baffle plate 6. The case 3 has an inlet 31 for introducing exhaust gas discharged from the engine, an expanding 32 for expanding the flow path cross-sectional area of ​​the exhaust gas that has entered from the inlet 31, a housing 33 for housing the three-way catalytic converter 5, a contracting 34 for reducing the flow path cross-sectional area of ​​the exhaust gas that has passed through the three-way catalytic converter 5, and an outlet 35 for releasing the exhaust gas that has passed through the contracting 34. The outlet 35 has a mounting portion 351 to which an oxygen sensor 4 for detecting the oxygen concentration contained in the exhaust gas flowing through the outlet 35 is attached. The baffle plate 6 is provided inside the case 3 between the three-way catalytic converter 5 and the mounting portion 351.

The invention relates to a method for compensating leakage currents (48, 50) from at least two connecting lines (18, 22, 100, 102) that connect a lambda probe (2, 78) to a control device (4, 98), wherein the method comprises the following steps: - Determining, for at least one of the connecting lines (18, 22, 100, 102), an associated leakage current (48, 50), - Determining, for each determined leakage current (48, 50), whether the respective leakage current (48, 50) is a result-relevant leakage current (48) that affects the result of a lambda measurement performed by the lambda probe (2, 78), or not, - Determining a compensation current, wherein only the result-relevant leakage currents (48) are taken into account in its determination, - Applying the compensation current to at least one of the connecting leads (18, 22, 100, 102) of the lambda sensor (2, 78).

[Problem] To provide a catalytic converter that can stably improve the purification rate of a three-way catalyst. [Solution] Provided is a catalytic converter 2 comprising: a three-way catalyst 5 that purifies exhaust gas from an engine; a baffle plate 6 that has a plurality of holes through which the exhaust gas passes; and a case 3 that accommodates the three-way catalyst 5 and the baffle plate 6. The case 3 includes: an inflow section 31 into which flows the exhaust gas discharged from the engine; an expansion section 32 where the cross-sectional area of the flow passage for the exhaust gas flowing in from the inflow section 31 is expanded; an accommodation section 33 that accommodates the three-way catalyst 5; a reduction section 34 where the cross-sectional area of the flow passage for the exhaust gas that has passed through the three-way catalyst 5 is reduced; and an outflow section 35 out from which flows the exhaust gas that has passed through the reduction section 34. The outflow section 35 has an attachment part 351 to which is attached an oxygen sensor 4 for detecting the concentration of oxygen contained in the exhaust gas that flows through the outflow section 35. The baffle plate 6 is provided in the interior of the case 3 and between the three-way catalyst 5 and the attachment part 351.

This invention belongs to the technical field of cable trench detection devices and discloses a detection device for cable trenches, including a mounting box. A support frame is fixedly mounted on the top surface of the mounting box, and a ventilation component is fixedly mounted on the top of the support frame. An oxygen sensor is movably connected to the left end of the ventilation component, and an air supply component is fixedly mounted inside the ventilation component. This invention utilizes the centrifugal force generated by the rotating connecting shaft when the device moves. This centrifugal force connects the power-off component to the power-on component, and then to the internal circuit of the drive motor. A transmission belt drives two transmission wheels, which in turn rotate the air supply component at the top of the ventilation component, drawing outside air into the ventilation component. This, in turn, causes airflow within the cable trench, forming an airflow that enters the ventilation component and contacts the oxygen sensor. The oxygen sensor detects the flowing air, increasing the device's oxygen content detection range. The device is simple to operate and reduces the workload of operators.

This utility model relates to the field of monitoring equipment technology, and more particularly to a connecting strap for a wrist monitor. It includes a dial, with a first fixing strap fixed to one end and a second fixing strap fixed to the other end. A fixing shell is fixed to the end of the second fixing strap away from the dial. A photoelectric receiver is fixed inside the top of the fixing shell. A transparent plate is fixed inside the fixing shell, above the photoelectric receiver. A display screen is installed inside the top of the dial, and a protective plate is installed inside the bottom of the dial. A blood pressure sensor and a blood oxygen sensor are installed inside the dial, above the protective plate. This utility model, through the cooperation of the first fixing strap, the fixing shell, the rotating column, the positioning block, and the second return spring, allows the first fixing strap to fit tightly against and be fixed to the second fixing strap, thereby ensuring the dial is securely worn on the outside of the user's wrist.

This invention provides a portable oxygen analyzer for detecting carbon dioxide concentration and its usage method, relating to the field of oxygen analyzer technology. The portable oxygen analyzer includes a middle frame, a rear cover fixedly mounted on one side of the middle frame, a control board fixedly mounted in the middle of the rear cover surface, an oxygen sensor cover fixedly mounted on the rear cover surface, and an oxygen sensor fixedly mounted inside the oxygen sensor cover. The control board includes a power management module connected to a multi-power supply module and a charging management module, and is also connected to a main control processing module. By integrating dual-parameter detection of oxygen and carbon dioxide, environmental temperature and pressure compensation, Bluetooth and serial communication linkage control, and multi-power supply functions, real-time monitoring and closed-loop regulation of air quality in oxygen-enriched spaces are achieved, effectively solving the problems of traditional oxygen analyzers having limited functionality, inability to network linkage, and limited power supply methods.

The application provides a welding auxiliary device for a tail pipe end cover of an exhaust gas aftertreatment device, which can realize positioning and fixing welding of different tail pipe end covers on the aftertreatment device, has good universality, reduces production cost, and occupies small area, and comprises a base, wherein an end cover positioning cavity is arranged on the base, an end cover can be positioned in the end cover positioning cavity and is limited by the end cover positioning cavity; an end cover fixing mechanism can cooperate with the edge of the end cover to press the end cover in the end cover positioning cavity; a tail pipe fixing mechanism is arranged on the base corresponding to the tail pipe; a tail pipe positioning mechanism is arranged on one side of the base, the position of the tail pipe positioning mechanism can be adjusted along the edge of the base, and the tail pipe positioning mechanism comprises a positioning pin which can cooperate with a nitrogen oxygen sensor mounting seat on the tail pipe to position the tail pipe.

This invention discloses a highly efficient microbial process for preparing liquefied cellulose composite inoculants, relating to the field of microbial acoustic magnetic field treatment. The process includes the following steps: Step 1, inoculum activation and seed culture preparation; Step 2, inoculation and fermentation; Step 3, multi-field coupling enhancement and online detection; Step 4, intelligent feedback control; and Step 5, inoculum post-treatment. The intelligent multi-field coupled reactor includes a tank for carrying the inoculum, an ultrasonic stirring device located within the tank, a magnetic field generating device located on the outer wall of the tank, and online viscometers, fluorescent dissolved oxygen sensors, and near-infrared enzyme activity sensors for detecting the inoculum within the tank. The preparation process provided by this invention, by constructing an intelligent fermentation system with multi-field coupling of ultrasound and magnetic fields, fundamentally solves the technical defects of traditional cellulose-degrading inoculants, such as long fermentation cycles and low enzyme activity.

This invention discloses a deep learning-based adaptive compensation method for temperature and pressure in an electrochemical oxygen sensor, relating to the field of oxygen content detection technology. The method includes the following steps: constructing a sealed test space and simultaneously conducting random oxygen content tests within the sealed test space, recording the oxygen content test data; analyzing the temperature offset relationship between the ambient temperature and the sensor temperature based on the oxygen content test data; analyzing the pressure offset relationship between the ambient pressure and the sensor temperature based on the oxygen content test data; analyzing the primary and secondary offset relationships based on the temperature and pressure offset relationships; and adaptively compensating the sensor temperature based on the primary and secondary offset relationships. This invention addresses the problem that existing oxygen content detection technologies using electrochemical oxygen sensors cannot eliminate reading deviations under different temperature and pressure environments, resulting in inaccurate oxygen content measurements.

The application discloses a kind of wild black tea precision fermentation equipment, including shell, tea leaf is placed fermentation mechanism in shell, the mechanism includes support, sprocket set, chain and a plurality of longitudinal interval arrangement holding part, holding part is made of first grid holding plate and second grid holding plate, second grid holding plate is driven screw column by micro torque motor and realizes lifting, track groove is opened in support, the cylindrical block of holding part side end is cooperated with it, so that holding part keeps horizontal in moving process, humidity sensor, temperature sensor and oxygen sensor are equipped in shell, back is equipped with humidification pipe, heating pipe and oxygen pipe, bottom is equipped with air circulation fan, top is equipped with exhaust fan, realize the real-time monitoring and precision control of fermentation environment.The application is also equipped with automatic opening and closing door, sliding type fermentation mechanism, drying disc and receiving tray, can realize automatic feeding, in-situ drying and uniform fermentation, significantly improve the fermentation quality and production efficiency of wild black tea, worthy of popularization and application.

The application discloses a semiconductor device and an oxygen removal method of the semiconductor device, and the semiconductor device comprises a process cavity, an oxygen removal pipeline and an oxygen detection device, the oxygen detection device comprises an oxygen detection pipeline, a switching ball valve and an oxygen sensor, the oxygen detection pipeline comprises a first pipeline, a second pipeline and a third pipeline, the first pipeline, the second pipeline and the third pipeline are arranged in parallel and are connected with the oxygen removal pipeline and the switching ball valve respectively, the oxygen sensor is arranged on the third pipeline, and the switching ball valve is configured to: in an oxygen removal stage, the switching ball valve connects the first pipeline and the second pipeline, and in an oxygen detection stage, the switching ball valve connects the first pipeline and the third pipeline. According to the semiconductor device provided by the embodiment of the application, residual high-oxygen-concentration gas can be prevented from flowing to the oxygen sensor and causing the machine to issue an alarm, and the high-oxygen-concentration gas can also be prevented from flowing through the oxygen sensor and accelerating the aging of the oxygen sensor.

The application provides a method for detecting biochemical oxygen demand in sewage, and belongs to the field of oxygen demand detection. The method comprises the following steps: forming a fluorine-containing organosilicon nano coating on the electrode surface of a dissolved oxygen sensor of a full-automatic BOD5 analyzer to obtain a fluorine-silicon modified dissolved oxygen sensor; pretreating the sewage to be detected in an adsorption column composed of modified activated carbon and porous silica gel to obtain a pretreated water sample; fixing bacillus subtilis on a porous carrier and then putting the carrier into the pretreated water sample to obtain an inoculated water sample; measuring the initial dissolved oxygen of the inoculated water sample and the end-point dissolved oxygen after 5-day culture; and obtaining the five-day biochemical oxygen demand in the sewage according to the initial dissolved oxygen and the end-point dissolved oxygen. Through the four-level collaborative system of "sensor anti-interference optimization, sample purification and enrichment, microbial reaction standardization and accurate signal acquisition", the application systematically eliminates the error sources in the traditional BOD5 detection, and realizes the accurate measurement of the organic matter pollution level in complex sewage.

Systems and methods for evaluating the operation of a plurality of upstream and downstream lambda sensors are disclosed. In one example, the air-fuel patterns can be arranged in a sequence to reduce the time required to evaluate upstream and downstream lambda sensors. The lambda sensor evaluation can be suitable for detecting sensor miswiring and sensor wear.

A demand-adapting and auto-regulatory ECMO system and method is disclosed that may be configured to provide complete cardiopulmonary replacement. The system and method employ a blood gas exchanger having a blood inlet, a blood outlet, a gas inlet, and a gas outlet, an oxygen sensor positioned to detect oxyhemoglobin saturation at the blood inlet, and a carbon dioxide sensor positioned to detect exhaust gas CO2 concentration at the gas outlet. A controller communicates with the oxygen sensor and the carbon dioxide sensor and controls blood flow and gas flow through the blood gas exchanger in response to a sensed oxygen level by the oxygen sensor and a sensed carbon dioxide level by the carbon dioxide sensor, in turn maintaining the sensed oxygen level and the sensed carbon dioxide level within a pre-designated range of values to maintain a patient's metabolic requirements.

This invention relates to a low-platinum composite electrode slurry, its preparation method and application, and a chip oxygen sensor. The electrode slurry comprises an organic support and a solid phase component uniformly dispersed in the organic support. The solid phase component includes: a Pd@Pt core-shell catalytic phase comprising a Pd core and a Pt shell coating the Pd core; a Ce-Zr oxide support phase for anchoring the Pd@Pt core-shell catalytic phase through strong metal-support interactions; and an LSM-CGO composite conductive mesh phase for constructing a three-dimensional conductive network and providing interfacial barrier, wherein the LSM-CGO composite conductive mesh phase contains La. 0.8 Sr 0.2 MnO3 and Ce 0.8 Gd 0.2 O 1.9 The composite material contains Pt at a mass content of 3.75% to 12.5% ​​based on the total mass of the solid phase components. Compared with the prior art, the present invention has the advantages of significantly reducing the amount of precious metals used and the cost, maintaining high dispersion and stability of the catalytic phase at high temperatures, effectively blocking such interfacial reactions, and ensuring the long-term stability of the electrode.

The application discloses a new-born baby respiratory abnormality automatic identification system and identification method, relates to the technical field of medical devices, and aims to solve the technical problem that mechanical damage appears on the skin of a sick child due to monitoring by an electrode sheet or a sensor, and comprises a monitoring module which can be detachably embedded into a preset installation groove in the top inner wall of an incubator, and comprises an FMCW millimeter wave radar sensor with a working frequency of 60GHz+ / -2GHz and a spatial resolution of 0.1mm+ / -0.02mm, a near-infrared non-contact blood oxygen sensor and a temperature and humidity sensor with an accuracy of + / -0.5 DEG C / + / -3%RH; the detection surface of the millimeter wave radar sensor is kept at a vertical distance of 30-50cm from the chest and abdomen of a premature baby, and the signal transmission power is controlled at-10dBm to-5dBm, so that the electromagnetic radiation does not affect the premature baby. The application has the advantages that no contact with the skin is needed in the whole process, and the skin health of the new-born baby is improved.

An exhaust conduit (104) of the vehicle (100) comprises a catalyst unit (120), characterized in that, the exhaust conduit (104) comprises only one oxygen sensor (110) positioned downstream of the catalyst unit (120) which is either a single block or split / tandem catalyst system. The signal from the only one oxygen sensor (110) is used for control of at least one function selected from a group comprising a closed loop lambda control and a catalyst monitoring. The oxygen sensor (110) is positioned downstream of last of the catalyst unit (120) in case of split type catalyst system. The amplitude of the oxygen signal and the switching point for the controller (112) is based on pre-configured values obtained after multiple and extensive testing. The controller (112) is suitable for different types of vehicle (100) such as two-wheeler, three-wheeler vehicles (100), etc., also reduces cost with use of single sensor for dual purpose / functions.

An oxygen sensor is provided for measuring a dissolved oxygen concentration when deployed or implanted at a tissue site. The oxygen sensor includes a solid-state contrast agent for oxygen. The oxygen sensor is configured to indicate the dissolved oxygen concentration of a tissue when subjected to a magnetic resonance based method. The oxygen sensor may be used to map tumor oxygenation levels and for adaptive planning in brachytherapy.

The utility model discloses a mine general type oxygen sensor, specifically relates to oxygen sensor technical field, including sensor body, two tracheal interfaces are equipped respectively in the both sides of sensor body, two fixed blocks are fixed and installed symmetrically in the both sides of sensor body, the one side of each fixed block all is provided with the installation slot, the inboard wall on each installation slot all is equipped with threaded rod through bearing, the utility model discloses when using, simple operation drives sliding block through threaded rod, drives the movement of link frame and clamping plate, and the cooperation rubber pad fixed trachea prevents trachea loose and falls off, and guarantees mine gas steady transmission, when not working, baffle blocks tracheal interface, blocks dust, particulate matter, reduces air passage block and element pollution, and elastic protective film protects installation slot, avoids dust and causes threaded rod rotation and is stuck, effectively promotes sensor work stability and service life.

The application provides a respiratory support device and an oxygen concentration detection method thereof. The method comprises the following steps: acquiring a gas characteristic of gas in a respiratory gas flow path and / or a device parameter of the respiratory support device; and determining a target oxygen concentration detection value according to the gas characteristic and / or the device parameter, and optionally outputting the target oxygen concentration detection value, wherein the target oxygen concentration detection value is obtained according to an oxygen concentration detection value of an ultrasonic oxygen sensor at a target moment or a target period when interference of interference gas on oxygen concentration detection meets a preset condition. Thus, the oxygen concentration detection value is not affected by interference, and the detection accuracy is improved.

The application discloses an electrochemical oxygen sensor and belongs to the technical field of electrochemical gas sensors.The electrochemical oxygen sensor comprises a sensor module, a liquid level sensing module, an upper ring seat and a locking hoop unit.The liquid level sensing module comprises a contraction structure, the contraction structure comprises a dynamic switch spring, a static ring-shaped terminal seat and a passive float.The liquid level sensing module can be used for monitoring the amount of electrolyte in the sensor module in real time.When the electrochemical oxygen sensor body in the sensor module is corroded by VOC gas in a chemical reaction kettle, the sensor module will be cracked during work, and the electrolyte will leak out through the cracks of the electrochemical oxygen sensor body, thus triggering the locking process of the electrochemical oxygen sensor body, so that the electrolyte leakage of the electrochemical oxygen sensor caused by VOC gas corrosion in the chemical reaction process can be effectively avoided, and the pollution of the production raw materials in the reaction kettle caused by the electrolyte leakage can be avoided.

A single rotor engine fuel injection control system and method, rotor engine electronic control fuel injection control technical field, including: eccentric shaft position sensor, intake pressure sensor, oxygen sensor, auxiliary sensor, fuel injector and ECU, the eccentric shaft position sensor, intake pressure sensor, oxygen sensor and auxiliary sensor are connected with ECU signal, the ECU is connected with fuel injector signal.The present application is through intake load and air-fuel ratio closed loop accurate calculation fuel quantity, according to eccentric shaft position sensor real-time division each combustion chamber stroke, and according to the speed and load dynamic determination optimum injection phase, realize the accurate control of injection time and injection quantity.

The application relates to a heater, an oxygen sensor, an engine and a vehicle. The heater comprises a first heating unit and a second heating unit; the first heating unit is adapted to be connected to an external power source; the second heating unit is arranged in parallel with the first heating unit and is adapted to be connected to the external power source; wherein at least one of the first heating unit and the second heating unit comprises a porous structure. The application aims to solve the technical problem that the internal circuit of the heater of the oxygen sensor in the prior art is easy to gather heat, leading to electric breakdown, and even circuit failure.

The utility model discloses a kind of ceramic terminals for automobile oxygen sensor wiring connection, it is related to wiring terminal technical field, including ceramic terminal, the connecting line is fixedly connected in the ceramic terminal top end surface, the utility model is rotated by connecting piece on ceramic terminal thread, and make connecting piece and ceramic terminal abut, then reset spring's recovery force is pushed slider in movable bin reset sliding, and make slider drive insertion rod insert socket, to reach the purpose of rotating locking of connecting piece, prevent the high-frequency vibration of continuous in automobile driving, lead to threaded cooperation gap gradually expand, the pretightening force of threaded pair can gradually attenuate, cause the situation of connecting piece and ceramic terminal connection loose even drop, further improve the stability of connecting piece and ceramic terminal connection, while ensure the stability of connecting piece and ceramic terminal signal transmission.

This utility model discloses a laboratory device for measuring the biochemical oxygen demand (BOD) of water, including a reaction container. The reaction container has a top cover and a drain outlet at its bottom. A stirring motor is located in the middle of the upper part of the top cover, and an inlet pipe is installed on the upper part of the top cover next to the stirring motor. A control box is located on one side of the reaction container. An oxygen sensor is located at the lower end of a temperature control module. Aerators are also embedded on both sides of the drain outlet at the bottom of the reaction container. The device offers rapid and timely measurement: Real-time monitoring of dissolved oxygen concentration changes using an oxygen sensor, combined with an efficient data acquisition and processing module, allows for rapid calculation of the BOD value, significantly shortening the measurement time. The device provides accurate and reliable results: A high-precision temperature control module, an accurate oxygen sensor, and a scientific data processing algorithm together ensure the accuracy and reliability of the measurement results.

The application discloses a kind of based on intelligent regulation and control's forest planting seedling cultivation detection integration device, related to seedling cultivation device field, including cultivation box, irrigation structure, cultivation net box and cultivation unit, cultivation box is equipped with cultivation groove, irrigation structure contains arc hinged irrigation frame and corresponding cultivation groove atomizing nozzle, cultivation unit includes the insertion tube of wetness, oxygen sensor, driving part and push piece, insertion tube is equipped with the notch of stirrer, inside insertion driving gear driving cylinder, driving part drives insertion tube rotation and stirrer action.This device integrates leaf surface atomization irrigation, root zone environment detection, soil nondestructive loosening, water oxygen precise supply function, constructs "real-time detection-intelligent analysis-linkage control" closed loop, without manual sampling, avoid root system damage, break soil hardening, improve water oxygen utilization rate, reduce large-scale seedling raising artificial cost and difficulty, improve seedling cultivation intelligent level and cultivation quality, adapt to modernization forestry standard seedling raising demand.

The utility model discloses a rear oxygen sensor wire harness fixing support which comprises a middle plate, the two ends of the middle plate are rotationally connected with mounting plates, a vertical plate is arranged on one side of the upper surface of the middle plate, and a movable plate which is distributed opposite to the vertical plate and can reciprocate in the length direction of the middle plate is arranged on the other side of the upper surface of the middle plate. And a screw rod is fixedly mounted at the top end, located on one side of the vertical plate, of the movable plate, and the end of the screw rod penetrates through the vertical plate and is in threaded connection with a nut. Due to the fact that the middle plate is rotationally connected with the two installation plates, the angles of the middle plate and the installation plates can be adjusted conveniently according to the installation environment and requirements, the requirement for the installation position is lowered, and installation is more convenient.

This utility model relates to an oxygen probe for online measurement of oxygen concentration in the high-temperature zone of a glass furnace. The structure consists of a ceramic protective sleeve and an integrated long tubular zirconia oxygen sensor, concentrically mounted and of the same length, fixed to a piston seat. Mounting seats and a rear cover are fixed to both ends of a metal housing. A piston seat and a spring are sequentially installed inside the metal housing. One end of the spring presses against the piston seat, and the other end presses against the rear cover. The piston seat drives the ceramic protective sleeve and the integrated long tubular zirconia oxygen sensor, which pass through the mounting seat, to slide together along the metal housing. This zirconia oxygen probe can be directly inserted into the high-temperature zone of a glass furnace to accurately measure the residual oxygen concentration within the furnace. The design of the integrated long tubular zirconia sensor and ceramic protective sleeve ensures the stability and durability of the sensor under high-temperature conditions. The spring structure within the metal housing effectively eliminates the influence of thermal expansion and contraction on the oxygen probe structure, further improving the reliability and service life of the oxygen probe.

The application discloses a nitrogen-oxygen sensor, a nitrogen-oxygen sensing control system and a method for measuring nitrogen-oxygen, and the nitrogen-oxygen sensor comprises a sensor element, a gas diffusion path is arranged in the sensor element, a first diffusion barrier and a second diffusion barrier are sequentially arranged on the gas diffusion path, a functional electrode group is arranged on the sensor element, and a heater is integrated on the sensor element and used for heating the sensor element; the functional electrode group comprises an oxygen electrode unit, a reference electrode unit, a nitrogen oxide electrode unit and a common electrode unit, the oxygen electrode unit is used for pumping oxygen and generating a first current signal positively related to the oxygen concentration, the reference electrode unit is used for detecting the oxygen partial pressure, and the nitrogen oxide electrode unit is used for decomposing nitrogen oxide and generating a second current signal positively related to the nitrogen oxide concentration; and the application can simplify the sensor structure, reduce the manufacturing cost, and improve the measurement accuracy of the oxygen and nitrogen oxide concentration, the anti-interference ability and the high-temperature stability.