31results about How to "With fault diagnosis function" patented technology

The invention discloses an intelligent vehicle controller. The intelligent vehicle controller comprises a micro controller unit, wherein the signal input end of the micro controller unit is connected with a switching signal acquisition circuit unit, an analog signal acquisition circuit unit, a collision signal acquisition circuit unit and a vehicle body inclination signal acquisition circuit unit; the signal output end of the micro controller unit is connected with an output control circuit unit; the output control circuit unit outputs a control signal to an executive mechanism of a vehicle; the micro controller unit communicates with a controller area network (CAN) bus interface circuit unit, a local interconnect network (LIN) bus interface circuit unit and a memory unit; and a power management unit supplies power to the micro controller unit, other units and a vehicle sensor. The vehicle controller has high stability, strong functions, high universality and high anti-interference capability, is low in cost and meets the requirements of different working conditions.

The invention discloses an intelligent integrated control system of a bag-type dust remover. The intelligent integrated control system comprises a master controller, an electric equipment interface part, a terminal parameter setting system and a remote monitoring system and is characterized in that the master controller is used for detecting the pressure and temperature of a dust gas inlet/outlet,the pressure of compressed air blown by an air tank, induced draft fan power and gas emission indexes, achieving self-optimization according theses input/output signals and the optimal performance index and dynamically setting the filter air sped of the dust remover and the dust removing cycle of a dust removing process; a pulse dust removing instrument is used for achieving the pulse washing control function of the bag type dust remover, and a gas purification index detection device based on laser vision is used for shooting the purified gas image of a set area and acquiring gas particle indexes; the terminal parameter setting system is used for setting related parameters; the remote monitoring system is used for revising the self-optimization control strategies of the dust remover according to regional industry atmosphere emission indexes to perform performance keeping and cost control. The intelligent integrated control system has the advantages that the system can be assembled andmounted according to actual conditions, control system cost is lowered, and optimized energy conservation and dust removing are achieved.

The invention relates to the field of electrical and electronic appliances, and provides a power-down method and device for a battery management system (BMS). The power-down method comprises the stepsthat through mutual cooperation of the BMS and a vehicle control unit (VCU), after a key signal disappears, the VCU issues a high-voltage power-down instruction to the BMS and obtains feedback information of the BMS, and after analyzing the feedback information, the VCU issues the next instruction until the whole power-down process is completed; and an adhesion breakdown and a charge release breakdown of a high-voltage relay can be detected in the power-down process, the BMS stores related data, and low-voltage power-down operation is completed. According to the power-down method for the battery management system, the VCU and the BMS are mutually matched, the power-down movement of a whole vehicle is optimized, sequential execution of the high-voltage power-down movement is achieved, andmeanwhile, the breakdown diagnosis function is achieved.

The invention relates to a variable flow low pressure fuel oil supplying device for a pressurizing gasoline direct injection engine. A high pressure oil pump is connected with a low pressure oil pump through a low pressure oil supplying pipeline; a pressure and temperature sensor is installed on the low pressure oil supplying pipeline and is in output connection with an engine control unit; the engine control unit is connected with the low pressure oil pump through a fuel oil pump control module. After the engine control unit receives a fuel oil pressure signal, the current flow of a low pressure oil supplying system can be figured out according to current working conditions, then a PWM control parameter is calculated and output according to the actual fuel oil demand of an engine and fuel oil pressure requirements correlating with temperature, a voltage value needing to be provided to the low pressure oil pump is figured out through a oil pump control module, and therefore the low pressure oil pump can be controlled to operate at a corresponding rotation speed. The variable flow low pressure fuel oil supplying device for the pressurizing gasoline direct injection engine can control the oil pumps to operate at a most reasonable rotating speed according to the actual fuel oil demand; accordingly, the fuel oil consumption is reduced, and the noise is reduced.

The invention provides a circuit for achieving general switching value collection through an AD channel. The circuit comprises clamping diodes, resistors and a capacitor. The clamping diodes comprise the clamping diode D1 and the clamping diode D2. The resistors comprise the resistor R450, the resistor R453, the resistor R522 and the resistor R562. The capacitor is the capacitor C233. The resistor R450 and the capacitor C233 are connected in parallel and then are connected with the clamping diode D1 in parallel. The resistor R453 and the clamping diode D2 are connected in parallel. The negative pole of the clamping diode D1 is connected with the positive pole of the clamping diode D2, one end of the resistor R562 and one end of the resistor R522. The circuit can achieve general collection of vehicle switching value signals and open circuit fault judgment.

The invention discloses a CAN bus-based distributed control system for a controlled atmosphere fresh-keeping transport vehicle and the realization method thereof. The control system comprises a main controller node and communication nodes, wherein the main controller node comprises an ARM control panel with a CAN communication port and a touch screen, the main controller node is installed on the instrument panel in the cab of the controlled atmosphere fresh-keeping transport vehicle, the communication nodes comprise a pressure chamber node, a vehicle head node, a negative pressure chamber node and a fresh-keeping chamber node, and the main controller node communicates with the communication nodes through CAN buses. The communication medium employs bi-core leads with shielding net. Four communication nodes of the pressure chamber node, the vehicle head node, the negative pressure chamber node and the fresh-keeping chamber node and the main control node are employed, and communication among all nodes is carried out through CAN buses. The working stability of the system is improved. The control system has fault diagnosis function, acquires the sensor parameter scope and performer working current of the communication nodes on a real-time basis, and determines the working state of devices after calculation and analysis.

The invention discloses a rapier loom control system based on an embedded flexible PLC. The system adopts a modularized design and comprises a flexible PLC development module, a multi-power-supply conversion module, a common input module, a common output module, a high-speed signal transmitting module, a high-speed signal collecting module, an analog input module, an analog output module, a Flashstorage expansion module, a communication interface module, an SWD debugging module, an Ethernet module and a wireless module; the system mainly takes an embedded control system platform as the support, the flexible PLC is solidified to the embedded control system platform, so that the embedded control system platform has the effects that the integrity is high, the manufacturing cost is low, the expansibility is high, and real-time industrial interconnection can be achieved, by adopting a flexible PLC system, the rapier loom control system has the function of achieving PLC programming, the simple programmability is achieved, the development cost is reduced, and the input of later maintenance can be greatly reduced.

The invention relates to a detecting method of an elevator intelligent operation safety monitoring system. A flat floor sensor detects if an elevator car is stopped on a flat floor; if the stop position is abnormal, an alarm is given; a state sensor detects if a car door is closed; if the car door is closed abnormally, a background alarm is given; a speed sensor senses the speed of the car all thetime; an infrared sensor senses if persons are in the car; a temperature sensor and a humidity sensor are arranged in the monitoring system; normal operation of an elevator can be influenced by abnormal temperature and humidity of the elevator; and once the temperature and the humidity are abnormal, the monitoring system can timely give an alarm to remind background workers to maintain. Comprehensive information of each elevator can be obtained; excellent instantaneity is achieved; a fault diagnosis function is achieved; and when abnormalities occur, operators on duty and maintainers can be timely notified to facilitate quick adoption of emergency measures.

The invention discloses a laser radar full-automatic detection system suitable for an intelligent production line. The system comprises a laser radar, an adjustment-free support, an interface conversion assembly, a distance measurement driving module, a data acquisition module, a system control and data center, an electric control translation platform, a laser power test end, a laser pointing testend, a ranging laser receiving end, an analog-digital acquisition I/O assembly, a program control link jumper switch, an optical fiber delay link, a narrow pulse laser signal source, a background light interference source, a double-path program control optical attenuator, a double-path optical fiber combiner, an optical fiber collimator, an electric control rotation and tilting platform and a three-axis motion controller. Spatial distributed automatic measurement of laser power, laser pointing and ranging performance is realized through electric control translation, and laser pointing test iscombined with electric control rotation and inclination to realize self-alignment of laser simulation echo; an optical fiber delay link module is innovatively designed, and one-key full-automatic detection of laser radar performance in different distances, different targets and different environments is realized.

The invention relates to an intelligent operation safety monitoring system for elevators. The intelligent operation safety monitoring system is composed of elevator monitoring devices, an intelligentelevator diagnosis and monitoring center and an emergency processing and response module. Each elevator monitoring device comprises a Zigbee communication module, a human body sensor, a sensor unit, an information display module, a storage module, a speaker, a photoelectric detector, a microprocessor, a Hall switch, an alarm device and a power source. The intelligent elevator diagnosis and monitoring center comprises a wireless gateway, a central monitor, a fault diagnosis device, an on-duty personnel director, an overhauling personnel director and an alarming device. The emergency processingand response module comprises a public security mobile phone terminal, a public security center telephone terminal, an intelligent elevator diagnosis and monitoring center telephone terminal, an urbanemergency center telephone terminal and a fire-fighting partial rescue telephone terminal. By the adoption of the intelligent operation safety monitoring system, the comprehensive information of eachelevator can be obtained, the real-time performance is good, and the fault diagnosis function is provided; and when an abnormality occurs, on-duty personnel and maintenance personnel can be notifiedin time, and emergency measures can be taken quickly.

The invention discloses a coke high-temperature dynamic reactivity controller, which can detect, control and display temperature signals and carbon dioxide and nitrogen flow signals simultaneously. The coke high-temperature dynamic reactivity controller comprises a signal amplification part, a filter circuit, an AD (Analog to Digital) converter, a signal chip microcomputer PIC16F877A, 0-5V signal input, 0-5V signal output, a keyboard, a display panel, a 485 communication bus and a power module. The coke high-temperature dynamic reactivity controller has the functions of temperature control, two-loop flow control and collection, and is particularly suitable for being used as a controller of a coke high-temperature reactivity furnace. The controller is good in stability and very strong in antijamming capability, and has a sensor channel fault diagnostic function; and a communication channel has very high isolation voltage which can reach 1000 volt.