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58results about How to "Reduce installation complexity" patented technology

Off-grid inverter battery protection and charging control method and system based on impedance detection

The invention belongs to the technical field of off-grid inverter and battery management, and particularly relates to an off-grid inverter battery protection and charging control method and system based on impedance detection, and the method comprises the steps: collecting battery input parameters under two different load working conditions: no-load or light-load and on-load conditions; an Ohm law analytical algorithm is adopted, a corresponding relation model of the lithium battery remaining capacity SOC and the battery internal resistance is preset, the current actual internal resistance of the battery is obtained, the preset SOC-internal resistance corresponding relation model is input, and the current SOC value of the battery is obtained through reverse deduction; an inverter charging current adjusting threshold value is set in a grading mode, and a multi-dimensional risk early warning threshold value is set in a grading mode; and when the monitored numerical value exceeds a correspondingly set risk early warning threshold value, triggering a risk early warning signal of a corresponding grade and a matched disposal action, and carrying out full-process management and control of battery state real-time monitoring, charging current self-adaptive adjustment and risk early warning. Therefore, the problems of short service life, poor charging safety and the like of the battery in the prior art are solved.
Owner:NANJING OULU ELECTRIC CORP LTD

A millimeter wave radar-based traffic detection device

ActiveCN224417387Ureduce dependenceDepend on jump outRadarDisplay device
The utility model relates to traffic detection technical field in intelligent traffic system especially, more particularly to a kind of traffic detection device based on millimeter wave radar, comprising: the picture acquisition mechanism of being set to device front end;First trigger radar and picture acquisition mechanism are sequentially arranged, detect vehicle entry condition;Second trigger radar and first trigger radar are sequentially arranged, confirm vehicle existence state;Transaction identification antenna is set after second trigger radar;Third trigger radar and transaction identification antenna are installed in same position, identify vehicle transaction success and send signal;Flow radar and third trigger radar are sequentially arranged;Gate lever and third trigger radar are communicatively connected, perform lifting action;Anti-smashing radar and gate lever are set in same position, detect vehicle after passing through and carry out relay attraction to complete gate lever pole falling action;Display is set in whole device end. The utility model greatly reduces installation complexity and long-term maintenance cost, and improves the comprehensive detection capability of the system.
Owner:JIANGSU JINGXING WUYUAN TECH CO LTD

A method and system for adjusting the height of a commercial vehicle cab

PendingCN122585331Areduce in quantityReduce wiring harness layout
The application relates to a cab height adjusting method for a commercial vehicle, which comprises the following steps: acquiring the real-time telescopic amount of a lifting oil cylinder of a cab through a displacement sensor installed on the lifting oil cylinder, acquiring the real-time included angle between the axis of the lifting oil cylinder and a horizontal plane through an inclination sensor installed on the lifting oil cylinder; calculating the height variation amount of the cab relative to a chassis based on the real-time telescopic amount and the real-time included angle, and calculating the height pressure adjusting amount of four air bags based on the height variation amount. The displacement sensor and the inclination sensor are integrated on the original lifting oil cylinder, so that the cab height information can be indirectly acquired, a special height sensor does not need to be additionally arranged, the number of sensors and the wire harness arrangement are reduced, the system hardware cost and the installation complexity are reduced, the active electric control adjustment of the cab posture can be realized without greatly reforming the whole vehicle framework, the system integration degree is high, and the application is easy to popularize and apply on the existing vehicle platform.
Owner:DONGFENG COMML VEHICLE CO LTD

Indoor residue discharging device

The utility model discloses an indoor residue discharging device which comprises an air inlet, a driver, a ventilation pipeline, a processing bin and an air outlet. The driver drives indoor air to enter the ventilation pipeline through the air inlet, the ventilation pipeline conveys the air to the treatment bin, a solution mixed with catalase is arranged in the treatment bin, the ventilation pipeline extends into the treatment bin and is inserted into the solution, the catalase can reduce the content of a strong oxidant in the air, and the content of the strong oxidant in the air can be reduced. The treated air returns indoors through the air outlet to form a closed-loop air purification loop; and a pipeline leading to the outside is not needed, the installation complexity is reduced, cyclic utilization of indoor air is achieved, and the environmental hardware requirement is reduced.
Owner:WENZHOU WEIKE BIOLOGICAL LAB EQUIP

Greenhouse environment mobile acquisition device

The utility model relates to the technical field of greenhouses, and provides a greenhouse environment mobile acquisition device which comprises an environment acquisition device. The track is arranged at the top of the greenhouse in the first direction, a plurality of collection point positions are arranged on the track at intervals, and each collection point position is provided with a position detection component; the transmission part is movably arranged on the track, is connected with the environment acquisition device and is used for driving the environment acquisition device to move on the track in the first direction and staying at each acquisition point position to complete environment information acquisition; the driving device is in transmission connection with the transmission part and used for driving the transmission part to move in the first direction; the controller is electrically connected with the driving device and used for controlling starting and stopping of the driving device; according to the utility model, greenhouse space utilization is optimized, dynamic coverage is realized with less equipment, data is closer to actual environment distribution, and greenhouses with different areas can be flexibly adapted.
Owner:BEIJING NANJIAO AGRI PRODUCE JINGYING MANAGE CENT

Air duct assembly, air conditioning system and vehicle

ActiveCN224409257UEfficient integrationGuaranteed FusionAir volumeElectric machinery
The utility model relates to a ventilation equipment field provides a kind of air duct assembly, air conditioning system and vehicle.Wind channel component includes air supply device, air supply device includes wind box, and wind box is opened with air inlet and air outlet, air inlet is provided with filter piece, and the position corresponding with air inlet in wind box is provided with air guide piece;Distribution box, fluid communication is in air outlet, and distribution box is provided with valve group, and distribution box includes first air duct, second air duct and third air duct, first air duct is fluid communication with the driver's room of vehicle, second air duct is fluid communication with the traction motor cabin of vehicle, third air duct is fluid communication with the passenger room of vehicle, and valve group is used to distribute the air intake of first air duct, second air duct and third air duct.The air duct assembly can make the airflow output of each air duct stable, avoid the air supply fluctuation caused by external wind pressure variation, ensure the comfort of driver's room, passenger room and the heat dissipation effect of traction motor cabin, improve the reliability of vehicle operation, simplify the structure of air duct assembly.
Owner:CRRC QINGDAO SIFANG CO LTD

Intelligent photovoltaic module

The invention relates to an intelligent photovoltaic module, and relates to the technical field of solar photovoltaic, the intelligent photovoltaic module comprises a plurality of battery strings and a plurality of junction boxes corresponding to the battery strings, and at least one of the plurality of junction boxes is an intelligent junction box; the intelligent junction box comprises a signal circuit, a sampling circuit and a control circuit. The signal circuit is used for demodulating a turn-off signal and a communication signal; the sampling circuit is used for collecting voltage and current; the control circuit is used for controlling the opening and closing of the intelligent junction box according to the turn-off signal; and the control circuit is also used for adjusting the on-off state in the intelligent junction box according to the voltage and the current under the regulation and control of maximum power point tracking (MPPT). According to the invention, the photovoltaic module can be conveniently detected and controlled.
Owner:ZHEJIANG JIAMING ELECTRIC POWER TECHNOLOGY CO LTD

A copper busbar mounting structure for a cable branch box

ActiveCN224289261USmooth and synchronous dockingSimultaneous fixationBus-bar/wiring layoutsCable junctionsBusbarElectrical connection
This utility model discloses a copper busbar installation structure for a cable branch box, belonging to the field of cable branch boxes. It includes a cable branch box body, with an installation plate slidably connected to the inner cavity of the body. Structural grooves are formed on one inner wall of the body and one side of the installation plate. Several lead screws are arranged within the inner cavity of the structural grooves, with corresponding lead screws fixedly connected by connecting rods. A sliding block is threaded onto the outer ring of each lead screw, and an L-shaped stop block is fixedly connected to one side of the outer surface of the sliding block. Through the coordinated use of these devices, multiple copper busbars can be simultaneously fixed, significantly improving installation efficiency. This avoids problems such as scratches on the copper busbar surface or deformation of bolt hole edges caused by improper manual operation in traditional bolt fixing methods, effectively protecting material integrity, improving the safety and reliability of electrical connections, simplifying the operation process, and reducing installation complexity.
Owner:HUASHAN CABLE CO LTD

New energy system, new energy system energy scheduling method and edge gateway

The invention discloses a new energy system, a new energy system energy scheduling method and an edge gateway, and relates to the technical field of new energy, the new energy system comprises an inverter, a direct current source and the edge gateway, the edge gateway is in communication connection with the inverter and intelligent electric equipment, and by multiplexing the communication and edge calculation functions of the edge gateway, the energy scheduling of the new energy system is realized. The operation data of the DC source and the multi-dimensional operation data of each intelligent electric device are acquired, so that the total electric load data of the intelligent electric devices in the future preset time period are predicted based on the multi-dimensional operation data of each intelligent electric device. And a scheduling instruction is generated based on the total power utilization load data of the intelligent power utilization equipment and the operation data of the direct current source in the future preset time period, and the scheduling instruction is sent to the inverter, so that energy scheduling of the new energy system is realized. According to the invention, a traditional mode of measuring the total power by depending on an intelligent electric meter is abandoned, and the hardware cost and the installation complexity of a new energy system are reduced.
Owner:NANJING GUANGXIAN TECH CO LTD

Multifunctional intelligent meter reading device

A multifunctional intelligent meter reading device comprises a meter reading module and a switching module. The meter reading module comprises a shell and an image acquisition unit. The image acquisition unit is arranged in the shell, and the first surface of the shell is provided with a first hole corresponding to the image acquisition unit in position and an annular part surrounding the first hole. The switching module is provided with a central channel and an adhesion surface. The adhesion surface is arranged at one end of the switching module, and the other end of the switching module is detachably arranged on the annular part. And the switching module is fixed on the target energy meter through the adhesion surface, so that the central channel is communicated with the first hole.
Owner:XIAMEN PVTECH CO LTD

A seal structure for an aluminum alloy window edge

The application relates to a seal structure for an aluminum alloy window sealing edge, in particular to a one-piece seal structure for an aluminum alloy window sealing edge, which has a constant cross section along the length direction. The cross section comprises a base part for fixing the seal structure body for the aluminum alloy window sealing edge, a cavity part provided with a hollow compression cavity, and a sealing part connected with the cavity part. The wall body of the cavity part comprises a pressure-bearing back plate connected with the base part and an elastic arc surface connected with the sealing part. The sealing part comprises a main sealing rib extending from the independent elastic arc surface and a secondary sealing rib arranged below the main sealing rib. The seal structure for the aluminum alloy window sealing edge is firmly fixed with the mounting groove through the above structure design, and when being extruded, the hollow compression cavity is deformed and the main and secondary sealing ribs of the sealing part are cooperated to provide excellent sealing performance and buffering performance, meanwhile, the structure is compact, the installation is convenient, and the sealing reliability and service life of the equipment or component are remarkably improved.
Owner:CSCEC STRAIT CONSTR & DEV

An integrated ADB module with low beam and high luminous intensity

ActiveCN224622707Ureduce light intensityTaking into account security
This utility model relates to the field of automotive lighting technology and discloses an integrated low beam and high luminous intensity ADB module, comprising: a high beam module, a first inner lens, and an outer lens arranged sequentially along the light transmission direction; the module also includes a low beam module and a second inner lens disposed directly above the low beam module, with a light-blocking plate disposed in the opposite direction of the light reflected from the second inner lens; the high beam module and the low beam module respectively have high beam LEDs and low beam LEDs, and by providing the first inner lens, which has an upper surface and a lower surface, the light can be collected as much as possible on the upper surface and concentrated on the lower surface to form a high-intensity illumination area, and the illumination of a specific area can be achieved by turning off the high beam LED group, reducing the light intensity for oncoming vehicles or pedestrians, thus taking into account both the illumination range and oncoming driving safety.
Owner:HELLA BHAP (TIANJIN) AUTOMOTIVE LIGHTING CO LTD

Heat exchange device for high concentration materials

ActiveCN224731122UGuaranteed heat exchange effectEfficient heat transfer
The utility model relates to heat exchanger technical field especially relates to a kind of heat exchange device for high concentration material, comprising: heat exchange main part, its inside is equipped with heat exchange cavity, heat exchange main part is equipped with with heat exchange cavity intercommunication heat exchange medium inlet and heat exchange medium outlet;Multiple parallelly arranged ducts, the heat exchange cavity of heat exchange main part is penetrated, the both ends of duct form opening in flush with the end face position of heat exchange main part;A pair of end door, openably sealed and arranged in the both ends of heat exchange main part, and the upper portion of end door is provided with multiple material channels;When a pair of the end door are closed, the both ends of each material channel are connected with the opening of adjacent two ducts, so that all ducts in the heat exchange cavity are connected in series to form an S-shaped continuous high concentration material flow channel through all material channels on the pair of end door;When at least one end door is opened, the both ends of the material channel on the opened end door are separated from the opening of the corresponding side of the duct, and the opening of the side is open.
Owner:ZHONG GUO CHUAN BO JI TUAN HUAN JING FA ZHAN YOU XIAN GONG SI

Battery cabinet

PendingCN122315198AWith heat dissipation reliabilityWith fire protection functionElectrical batteryEnergy storage
This invention provides a battery cabinet with a first mounting cavity and a second mounting cavity. Multiple battery packs are disposed within the first mounting cavity, and the air inlet and liquid outlet of each battery pack are connected to a receiving cavity for accommodating cooling medium and battery modules. A fire-fighting device is disposed on the cabinet and is connected to each air inlet to deliver fire-fighting gas into each receiving cavity. A storage device is disposed within the second mounting cavity, and the storage device has an interconnected storage cavity and an air outlet. The storage cavity is used to store cooling medium, and the first mounting cavity is connected to the storage cavity to discharge hazardous gases. Each liquid outlet is connected to the storage cavity to deliver cooling medium and fire-fighting gas into the storage cavity. An exhaust device is disposed on the cabinet and is connected to the air outlet to discharge fire-fighting gas and hazardous gases. This invention effectively solves the problem of low economic efficiency in existing energy storage battery cabinets.
Owner:珠海科创储能科技有限公司

Storage battery health state on-line evaluation system

The invention relates to the technical field of storage batteries, and discloses a storage battery health state on-line evaluation system, which comprises a magnetic type probe and a data acquisition device, which are used for acquiring a voltage sequence, a pole temperature sequence, an internal resistance sequence, a pole micro-vibration signal and an environment temperature and humidity sequence; the data processing module is configured to obtain an internal resistance health index according to the pole temperature sequence; obtaining a thermal health index according to the pole temperature sequence; obtaining a mechanical health index according to the pole micro-vibration signal; obtaining an environmental health index according to the environmental temperature and humidity sequence; obtaining a stability index according to the pole temperature sequence and the voltage sequence; obtaining a system consistency index according to a residual error generated by a dynamic relation model of the voltage sequence, the pole temperature sequence and the internal resistance sequence; and analyzing the indexes by adopting a D-S evidence theory to obtain a health state evaluation result. According to the method provided by the invention, the data acquisition convenience is high, and the evaluation result is more accurate.
Owner:HENAN RUIYUAN ELECTRONICS CO LTD

Control method of air conditioning system and air conditioning system

The invention discloses a control method of an air conditioning system and the air conditioning system, and relates to the technical field of air conditioners. The control method of the air conditioner system comprises the steps that a main air conditioner is determined from multiple air conditioners based on address information of all the air conditioners, and the rest air conditioners are slave air conditioners; in response to a control instruction triggered by a user, the main air conditioner sets a corresponding preset starting temperature threshold value and a preset closing temperature threshold value, and the preset starting temperature threshold value and the preset closing temperature threshold value are sent to the other slave air conditioners; wherein the preset starting temperature threshold value is greater than the preset closing temperature threshold value; for any air conditioner, when it is detected that the first environment temperature value is larger than a preset starting temperature threshold value, the corresponding air conditioner is started for cooling; and when it is detected that the first environment temperature value is smaller than the preset closing temperature threshold value, the corresponding air conditioner stops cooling. The invention aims to solve the problems of high cost, non-uniform local temperature control and low energy efficiency of the existing control method.
Owner:SHENZHEN SYSLAB ELECTRONICS CO LTD

Reflection cup of rotary cabinet column lamp

The utility model discloses a rotary cabinet column lamp reflection cup, and relates to the technical field of lighting equipment. The LED lamp comprises a reflection cup, a shell and an LED lamp panel, the LED lamp panel is installed in the shell, a gap exists between the LED lamp panel and the shell, a plurality of buckles are arranged on the reflection cup, and the reflection cup is connected with the LED lamp panel through the buckles. The LED lamp has the advantages that the reflection cup is connected with the LED lamp panel through the buckle, the shell does not need to be designed in a targeted mode, the buckle design enables installation and disassembly to be more convenient and faster, and installation time and complexity are reduced.
Owner:SHENZHEN YINUO ZHIYU TECH CO LTD

Host and food processor

The application provides a host and a food processor. The host comprises a panel, a first positioning hole is formed in the panel, a knob, and a control board assembly. The knob is installed on the control board assembly and clamps the panel between the control board assembly and the knob. The control board assembly comprises a front shell and a control board. The front shell is provided with a coaxial positioning outer ring and a positioning inner ring. The positioning outer ring penetrates the panel and cooperates with the first positioning hole. The positioning inner ring forms a second positioning hole. The control board is provided with a knob switch. The knob switch cooperates with the second positioning hole and the knob. The host and the food processor of the application can improve the concentricity of the panel and the knob.
Owner:ZHEJIANG SHAOXING SUPOR DOMESTIC ELECTRICAL APPLIANCE CO LTD

A refrigeration unit and its refrigeration cabinet

ActiveCN224623274USimplify the installation processincrease effective volume
This utility model relates to the technical field of refrigeration, and proposes a refrigeration unit and its refrigeration cabinet. The refrigeration unit includes a fixed assembly with a built-in refrigeration duct, and a compressor condenser assembly and a heat exchanger air supply assembly housed within the fixed assembly. The compressor condenser assembly is located outside the refrigeration duct, and the heat exchanger air supply assembly is located inside the refrigeration duct, thus integrating the compressor condenser assembly and the heat exchanger air supply assembly into a single, integrated refrigeration unit. By using the fixed assembly with the built-in refrigeration duct as an overall frame, the compressor condenser assembly and the heat exchanger air supply assembly are integrated within the fixed assembly. Compared to traditional separate installations, this integrated design significantly simplifies the installation process of the refrigeration unit and reduces installation complexity.
Owner:FOSHAN YINGHUAAO ELECTRIC CO LTD

Saline soil irrigation system and method based on electrically folded water and electrode array layout

ActiveCN120787776BOvercome the disadvantages of uneven treatment effectsadd depthWatering devicesCultivating equipmentsSoil scienceAlkali soil
The application relates to the technical field of saline-alkali soil irrigation, and discloses a saline-alkali soil irrigation system and method based on electric water folding and an electrode array layout, wherein the saline-alkali soil irrigation system comprises electrodes arranged in an array, a power supply assembly and a control assembly arranged at the edge of the saline-alkali soil, and a sensor assembly uniformly arranged in the saline-alkali soil; the power supply assembly is electrically connected with the control assembly; the control assembly is electrically connected with the electrodes and the sensor assembly; the sensor assembly comprises a moisture sensor and a salt content sensor; the electrodes are divided into three groups; the embedding depth of the electrodes in the third group is 1.6-2 times that of the electrodes in the second group; the embedding depth of the electrodes in the second group is 1.6-2 times that of the electrodes in the first group; and the electrodes comprise negative electrodes and positive electrodes. Through the technical scheme, the problem that the irrigation amount cannot be accurately controlled due to the fact that the moisture parameters and the salt content parameters in the soil cannot be obtained in a timely manner in the existing saline-alkali soil is solved.
Owner:SHIJIAZHUANG INST OF AGRI MODERNIZATION CHINESE ACAD OF SCI

Double-layer co-body type composite gas cylinder, preparation method thereof and vehicle-mounted gas supply system

PendingCN122708256Areduce thicknesslow cost
This invention belongs to the technical field of vehicle-mounted gas supply systems and gas cylinders, providing a double-layered composite gas cylinder and its preparation method, as well as a vehicle-mounted gas supply system. The composite gas cylinder includes an inner high-pressure resistant cavity, comprising a plastic liner and a first composite material layer; one end of the plastic liner has a high-pressure inlet / outlet, and the other end has a supporting member; an outer low-pressure resistant cavity includes an outer liner and a second composite material layer; the outer liner completely covers the supporting member and partially covers the high-pressure inlet / outlet, and correspondingly has low-pressure inlet / outlet openings; the inner high-pressure resistant cavity and the outer low-pressure resistant cavity are fixedly connected at both ends axially to form a co-located double-layered cavity structure; the inner cavity of the outer low-pressure resistant cavity constitutes a low-pressure chamber, and the inner cavity of the inner high-pressure resistant cavity constitutes a high-pressure chamber. The first composite material layer is configured to only bear the pressure difference between the high-pressure chamber pressure and the low-pressure chamber pressure. This invention simplifies vehicle mounting, reduces costs, and minimizes vehicle assembly space.
Owner:YAPP AUTOMOTIVE PARTS

New energy automobile heat management integration module water side runner plate assembly and automobile

The utility model provides a new energy automobile heat management integrated module water side runner plate assembly and an automobile. The new energy automobile heat management integrated module water side runner plate assembly comprises a plate assembly, a five-way water valve, a three-way water valve, a warm air water pump, a battery water pump and a motor water pump, a flow channel for a motor, a flow channel for a battery and a flow channel for warm air are formed in the plate assembly; the motor water pump is communicated with the motor runner, the battery water pump is communicated with the battery runner, and the warm air water pump is communicated with the warm air runner; the motor flow channel is communicated with the battery flow channel through a five-way water valve, and the three-way water valve is arranged in the warm air flow channel. Through the integrated design of all the assemblies, the weight of the whole vehicle is reduced, and parts of the whole vehicle are reduced; due to the fact that the number of connecting points between the pipelines is reduced, the leakage risk of the system is reduced; the arrangement space of the whole vehicle is saved, the installation complexity of sub-assemblies is reduced, and installation is convenient and fast; the loading efficiency is improved, and subsequent fault detection and maintenance are facilitated.
Owner:FAWER AUTOMOTIVE PARTS LIMITED COMPARTY +1

Automobile spray gun assembly based on ultrasonic ranging

ActiveCN224237162UAchieve high-precision controlMeet precision needsLighting applicationsElectrical apparatusReal-time dataElectrical and Electronics engineering
The utility model discloses an automobile spray gun assembly based on ultrasonic ranging, which comprises a spray gun body, an LED lighting unit and an ultrasonic ranging unit, a nozzle is arranged at the head end of the spray gun body, the LED lighting unit is arranged at the head end of the spray gun body and is close to the nozzle, and the ultrasonic ranging unit comprises an ultrasonic ranging sensor and a main control chip, the ultrasonic distance measuring sensor detects the distance between the ultrasonic distance measuring sensor and a paint spraying workpiece in real time and transmits the distance to the main control chip, the main control chip measures and calculates the distance in real time, and when the distance reaches a preset distance, the main control chip drives the LED lighting unit to be lightened. High-precision control over the spraying distance is achieved, the spraying qualification rate of workpieces with complex curved surfaces is increased to 95% from 82% in the prior art, the problem of manual positioning errors is effectively solved, and the precision requirement for automobile coating is met.
Owner:JIANGSU COLLEGE OF INFORMATION TECH

A gravity air-scrubbing filter device

PendingCN122643762Areduce in quantitySimple docking
The application relates to the technical field of water treatment equipment, and particularly discloses a gravity type air scrubbing filter device, which comprises a box body, a first water inlet pipe, a first pipeline and a gas distribution pipeline. The box body is in a cuboid structure, a plurality of first partition plates are arranged in the box body at intervals, and the plurality of first partition plates divide the box body into a plurality of first chambers from top to bottom, wherein the first chambers comprise a clean water bin, a water isolation bin and a water collecting bin in sequence, a filter material layer is arranged in the water isolation bin, and a filter plate is arranged between the filter material layer and the water collecting bin. The first water inlet pipe is communicated with the water isolation bin. The first pipeline is communicated with the water collecting bin and the clean water bin, and is provided with a water outlet pipe. The gas distribution pipeline is arranged in the water collecting bin. The application can solve the problems of low space utilization, complex installation and inconvenient maintenance of the existing circular cylinder design.
Owner:SHENHUA SHENDONG POWER +1

Method and device for on-line control of warm air ducts

This invention relates to the field of building equipment automation and predictive maintenance technology, and particularly to an online control method and device for HVAC duct gas. The method includes: acquiring pressure signals from a closed-loop HVAC duct system; extracting multi-dimensional fluctuation features from the pressure signals to obtain pressure signal characteristics; weighted fusion of the signal features to obtain a comprehensive diagnostic index; based on the pressure signals, performing fault-tolerant judgment on the operating conditions of the HVAC duct; determining the diagnostic threshold of the comprehensive diagnostic index based on the fault-tolerant judgment result; comparing the comprehensive diagnostic index with the diagnostic threshold; and executing corresponding graded exhaust control actions for the HVAC duct based on the comparison result. This invention can solve the problems of high hardware and maintenance costs, difficulty in detecting accumulated trace gases in existing technologies, and the limitations of detection technologies, which are limited to direct detection or single-feature judgment, and cannot effectively identify dynamic pressure fluctuation characteristics, making early and accurate gas diagnosis difficult.
Owner:ONOFF ELECTRIC CO INC

Motor heat dissipation device

The utility model provides a motor heat dissipation device, which comprises a fan cover coaxially and fixedly arranged on the outer side of a motor shell and a fan fixed at one end of the fan cover, a plurality of protruding parts protruding inwards are distributed on the inner wall of the fan cover, the protruding parts are supported between the inner wall of the fan cover and the outer wall of the motor shell, and the fan cover is fixed on the fan cover. An annular air channel is formed between the inner wall of the fan cover and the outer wall of the motor shell, a baffle is fixed to one end of the fan cover, a mounting hole is formed in the baffle, and the fan is mounted in the mounting hole and located at one end of the annular air channel. The motor heat dissipation device is high in heat dissipation efficiency, uniform in airflow distribution and suitable for being used under a high-temperature closed working condition.
Owner:NINGBO ANXIN CNC TECH

Wheel bolt looseness detection method and device, vehicle and medium

The invention relates to the technical field of vehicle fault diagnosis, and discloses a wheel bolt looseness detection method and device, a vehicle and a medium, and the method comprises the steps: collecting an inertial measurement unit signal, a wheel speed signal and a steering wheel hand torque signal of the vehicle; determining target detection data based on the inertial measurement unit signal, the wheel speed signal and the steering wheel hand torque signal; detecting whether a wheel bolt of the vehicle is loosened by using the target detection data to obtain a detection result; and controlling the vehicle to execute corresponding actions based on the detection result. According to the method, the existing sensor of the vehicle is directly used for collecting the signals, then the signals are fused with the multi-dimensional vehicle running state signals, feature extraction and combination processing are combined to form target detection data, the target detection data are used for wheel bolt looseness detection, full-process automation from signal collection, data processing, state detection to vehicle control action execution is achieved, and the detection efficiency is improved. And the detection accuracy and the driving safety are improved, so that the vehicle fault diagnosis requirements of low cost, high real-time performance and easy deployment are met.
Owner:CHONGQING CHANGAN AUTOMOBILE CO LTD

Optical storage and off-grid devices

This utility model relates to the field of energy storage technology, and in particular to a photovoltaic-storage off-grid device. An off-grid photovoltaic-storage device includes an integrated cabinet housing a battery pack, a PCS module, an STS module, and an EMS module. The STS module is connected to the power grid and the EMS module, and is used to detect the grid status and send a status signal to the EMS module when the grid is de-energized. The EMS module is used to control the PCS module to switch from grid-connected mode to off-grid mode based on the status signal, so that the battery pack can supply power to the load; it is also used to switch the PCS module back to grid-connected mode when the grid is restored.
Owner:SHEN ZHEN JI WA SHI DAI DIAN QI YOU XIAN GONG SI