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644results about How to "improve detection accuracy" patented technology

Electrical impedance scanning detection system and method of real-time multi-information extraction

The invention discloses an electrical impedance scanning detection system for the withdrawal of real-time multi-information and the method thereof, wherein, the system comprises a PC machine, a data transmission interface module, a microprocessor, a control module, a data acquisition module, a preceding stage detection module, an excitation source and an exciting electrode; wherein, a detecting electrode array withdrawals a detection signal and sends the detection signal to the preceding stage detection module, the detection signal is sent to an A/D converter and a data buffer memory module corresponding to a data acquisition unit after passing through a current and voltage conversion module through a multiple way switch; the date buffer memory module enters into the microprocessor; the PC machine performs the data transmission, delivers a control command or revives date through the transmission interface module and a microprocessor module; a software with supporting data analysis, curve description, image display and information prompt is arranged in the PC machine; thereby obtaining the real-time electrical impedance information of a measured target body, the multiple frequency impedance information and the impedance property. The invention has the advantages that the detection accuracy is high, the processing speed is rapid, and the noise resistance ability is strong.
Owner:FOURTH MILITARY MEDICAL UNIVERSITY

Rapid and comprehensive tunnel measurement system

The invention discloses a rapid and comprehensive tunnel measurement system which comprises a chassis truck, a sensor bracket, a sensor, a sensor synchronizing and signal processing device, a data acquiring and processing device as well as a power supply device, wherein the sensor bracket is mounted on the chassis truck through a horizontal rotating shaft, and a plurality of area array cameras, LED lamps and thermal infrared imagers are mounted on the sensor bracket respectively; the area array cameras acquire image data of the section of a tunnel; the thermal infrared imagers acquire the temperature information of the inner wall of the tunnel; the synchronizing and signal processing device provides synchronous signals for the thermal infrared imagers and the area array cameras; the data acquiring and processing device acquires signals of the thermal infrared imagers and the area array cameras. The rapid and comprehensive tunnel measurement system can acquire data of various tunnel defects such as lining cracks, lining water leakage, section deformation, a disengaging defect and the like simultaneously and rapidly, the detection efficiency and the detection accuracy are improved greatly, manual intervention is not required in a detection process, and the safety is good when the system is used for detecting the lining water leakage and disengaging defect of the tunnel.
Owner:WUHAN WUDA ZOYON SCI & TECH

Vehicle door opening early warning auxiliary system

ActiveCN106143299AImprove detection accuracyImprove active safety performance
The invention provides a vehicle door opening early warning auxiliary system and belongs to the field of vehicle safety. The vehicle door opening early warning auxiliary system comprises a rearview camera used for detecting pedestrian information and transmitting the pedestrian information to a processing unit through a CAN bus, a radar probe used for detecting vehicle information and transmitting the vehicle information to the processing unit through the CAN bus, the processing unit used for calculating the received vehicle information and the received pedestrian information, judging whether collision danger exists in the door opening process or not and sending out a command to a vehicle body control module and further used for receiving information of an owned vehicle, making a judgment and sending out a command for activating/closing the vehicle door opening early warning auxiliary system, and the vehicle body control module used for receiving the command of the processing unit and starting/stopping the vehicle door opening early warning auxiliary system or sending out an alarm. By the adoption of the vehicle door opening early warning auxiliary system, various motor vehicles or pedestrians can be accurately and effectively detected, and the collision danger caused by the fact that a driver is distracted when opening a door is avoided.
Owner:贵州吉利汽车制造有限公司 +2

Parking space detection method based on geomagnetic sensor

ActiveCN105869434AReasonable design principleImprove detection accuracy
The invention provides a parking space detection method based on a geomagnetic sensor. The method includes the steps that geomagnetism disturbance signals are acquired, smoothing and/or filtering are/is conducted on the acquired signal data, a state model is built according to the geomagnetism disturbance signals to generate a state analysis graph, and behavior feature analysis is conducted according to the state analysis graph to judge vehicle behavior states; according to the vehicle behavior states, use states of parking spaces are judged, geomagnetic signals of a parking space area static background and the geomagnetism disturbance signals caused by target detection vehicles are acquired in real time through the geomagnetic sensor, data which are useless, invalid and capable of influencing accurate analysis of the disturbance signals are classified and eliminated, and data which are precise and can effectively reflect disturbance signal changes are left and used for subsequent building of the state model. The behavior state model can accurately reflect vehicle running states, use conditions of the parking spaces can be deduced according to the vehicle running states, the design principle is reasonable, detection precision is high, detection speed is high, and parking space detection can be well conducted.
Owner:SHENZHEN WANBO TECH CO LTD

Sowing machine based on automatic control system

The invention discloses to a sowing machine based on an automatic control system and relates to a high-precision automatic control system of the sowing machine. The sowing machine solves the problems that a full-mechanical sowing machine can not detect the sowing condition in real time in the sowing process, and the sowing planting distance and the fertilizing amount can not be changed flexibly. A power output shaft of a driving motor of a seed-metering device and a power input shaft of the seed-metering device are coaxially connected, a measuring hole in a photoelectric coder is coaxially connected with a rotating shaft of a ground wheel, a power output shaft of a driving motor of a fertilizing box is coaxially connected with a power input port of the fertilizing box, a seed monitoring sensor is arranged at an outlet of the seed metering device; a rotating speed signal output end of the photoelectric coder is connected with a rotating speed signal input end of a controller, a counting signal output end of the seed monitoring sensor is connected with a counting signal input end of the controller; a driving signal output end of the seed metering device of the controller is connected with a driving signal input end of the driving motor of the seed-metering device, and a driving signal output end of the fertilizing box of the controller is connected with a driving signal input end of the driving motor of the fertilizing box. The automatic control system is suitable for being used by various mechanical sowing machines.
Owner:黑龙江海轮王科技有限公司
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