844 results about "Microcomputer system" patented technology

The invention relates to an intelligent advertising system having functions of audience characteristic perception and counting and belongs to the technical field of computer vision. The system consists of a camera, computing equipment and an electronic advertisement screen provided with a memory, wherein the camera is responsible for acquiring an image and sending acquired image information to the computing equipment; and the computing equipment is a computer or an embedded microcomputer system which is responsible for performing processing and an operation on the image acquired from acquisition equipment and controlling the electronic advertisement screen according to an operation result so as to realize the memorizing, the displaying, the playing and the switching of an advertisement content. The system provided by the invention is simple in structure, low in cost and convenient in operation, so that the problem that the conventional billboard performs only one-way pushing without consideration of the information of current advertisement audiences is solved; the value of the billboard relative to other billboards can be obtained according to the function of counting, and extremely referable data is provided for an advertiser; and the speed and the correction rate of face detection and face tracking are improved by utilizing a background modelling technology.

A method is for activating or deactivating at least one part of data stored in a memory arrangement of a microcomputer system, in particular one part of a program stored there. In the event of a manipulation of data stored in the memory arrangement by unauthorized third parties, a method having the following method steps may prevent utilization of the manipulated data reliably and effectively:

a microcomputer-individual identifier is stored in a signed or encoded fashion a specifiable memory area of the memory arrangement;

when the microcomputer system is started up, the signature of the identifier is checked or the identifier is decoded; and

as a function of the result of the identifier, one part of the data is activated or deactivated.

The invention discloses a test circuit for automatically testing the avalanche voltage of avalanche photodiodes and a method. The test circuit comprises a boost power chip with a current detector and a boost controller for providing bias voltage and current for an avalanche photodiode; a microcontroller with three internal analogue converters for adjusting and sampling the bias voltage and current; four resistance capacitance networks for connecting the internal circuits between the microcontroller and the boost power chip. The three analogue converters of the microcontroller are respectively connected with the feedback input of the boost controller, the bias voltage input of the current detector and the monitor output of the current detector via three resistance capacitance networks. The invention is based on automatic control theory, can automatically adjust safe bias voltage, can judge the avalanche breakdown region by comparing the sampled current value and a preset respected value, and can display the result on a man-machine interface of a microcomputer system, having wide dynamic range, accurate and adjustable output, fast and accurate measurement.

An intelligent cerebrospinal fluid drainage control and recognition warning system mainly comprises a microcomputer system (1), a flow control device (2), an infrared drop number sensor (3), a color recognition sensor (4), a pressure sensor (5), a communication module (6), a human-computer interaction interface (7) and a radio frequency recognition device (13). The intelligent cerebrospinal fluid drainage control and recognition warning system can independently set the discharge speed, the drainage amount per unit time, the drainage time interval and the drainage pressure of cerebrospinal fluid according to individual differences of patients or clinical needs so as to achieve fixed-speed discharge, quantitative discharge, timed discharge and personalized-pressure discharge of the cerebrospinal fluid; meanwhile, in the drainage process, the color recognition sensor (4) can make timely prewarning when the cerebrospinal fluid has a hemoglobin reaction.

The invention provides an automotive fuel tank system of road grade measuring data and fuel bulk measuring data, which is characterized by the following: detecting the oil tank position corresponding to the fuel oil level due to more than two oil level sensors (three oil level sensors on common); providing the inclined condition data of fuel oil tank and fuel oil quantity data to the microcomputer system under the different heights of oil level senor condition; indicating the road inclination through the microcomputer system (strictly speaking, indicating the fuel oil inclination) to display the fuel oil quantity; measuring the oil consumption per one hundred kilometer through mating utility with the electronic odometer.

The invention relates to a guided wave radar level meter echo signal processing system based on first-order derivative. The system comprises a single-chip microcomputer for controlling transmitting and receiving of pulse signals, a pulse transmitting circuit, a guided wave rod, an echo signal receiving circuit and a equivalent time sampling circuit. A signal conditioning circuit, a single-chip microcomputer system for processing echo signals, a liquid crystal display and software are further provided. The echo signals processed by the equivalent time sampling circuit are sent back to the signal conditioning circuit, subjected to voltage dividing, biasing and impedance conversion and sent to the single-chip microcomputer system to be sampled. Echo signal processing includes that the echo signals are subjected to 9-point moving average filtering preprocessing, filtered signals are subjected to first-order derivative calculation to detect echo, material level echo is judged through multi-parameter organic combination, a material level location point and a reference starting point are determined to calculate time difference, then the time difference is substituted into a function relational expression of the material level determined by calibration and the time difference to calculate the material level.

The invention relates to a keyboard character online detection system based on computer vision and a keyboard character online detection method thereof. The system comprises an industrial camera, a computer, a single-chip microcomputer system, a frequency converter, a motor and a conveying belt. The method comprises the operation steps that (1) the image quality is enhanced by using an image gray processing and median filtering method; (2) image matching is performed by using surf feature points; (3) the character positions are determined; (4) sequence numbering is performed on the characters; and (5) defect character separation is performed. An SVM classification method is used by the detection algorithm, the normal characters are marked as positive samples, the wrong characters are marked as negative samples, and the size, the center and the moment features of the samples are extracted to be trained. The system is easy to install and high in detection efficiency and plays an important role in the keyboard production process.

A dynamic mask module is disclosed, which comprises a micro-computer system, a mask pattern generator and a light source. The mask pattern generator is disposed over a substrate and electrically connected to the microcomputer system. The microcomputer system transmits an image signal to the mask pattern generator. The light source is disposed over the mask pattern generator to a photo-resist layer on the substrate. The mask pattern generated by the dynamic mask module is a dynamic image and the mask pattern can be changed on anytime. In addition, the manufacturing cost can be and the manufacturing time can be reduced.

The invention discloses an automatic goods fetching system for terminal express delivery and an implementation method thereof. The automatic goods fetching system for terminal express delivery comprises a box body, the box body is divided into three storage boxes at least, a microcomputer system is arranged in the box body, the box body is provided with a USB (universal serial bus) interface or a wireless communication network, a keyboard, a red prompting light, a green prompting light, a display screen, a power source, a voice prompting device and the like, one side of the bottom of the box body is provided with a weighing device, and the top of the box body is provided with a camera; the structure of the automatic goods fetching device for express is in a no-interlayer design; and the implementation method based on the device is introduced in detail. The automatic goods fetching device for express is combined with technologies of bar codes, short message feedback, password memory and identification and the like, entire intact operation of an express enterprise is realized, and the problems that time conflict exists between a courier and a customer and goods safety in terminal express delivery can not be guaranteed can be effectively solved, so that the service quality and the entire benefit of the enterprise are improved.

The invention relates to a sleep therapy apparatus based on electroencephalogram biofeedback, also called as a good sleep generator. The apparatus comprises an electroencephalogram electrode, an electroencephalogram signal amplifying and filtering circuit, an A/D (analog/digital) sampler, a measuring and controlling system based on a single chip microcomputer, a D/A (digital/analog) output circuit, a stimulating signal drive circuit, a system power supply and the like, wherein an electroencephalogram signal, the electroencephalogram electrode, the amplifying and filtering circuit, the A/D sampler, the measuring and controlling system, the D/A output circuit, the drive circuit and a stimulating electrode are orderly connected, and an analytical algorithm module and a database are connected with the measuring and controlling system. According to invention, the single chip microcomputer system is used as a measuring and controlling platform, and collection, amplification and analysis processing of the electroencephalogram signal are realized in combination with the electroencephalogram signal amplifying and filtering circuit and a stimulating wave signal database which are arranged at the front end and a stimulating signal generating and drive circuit arranged at the rear end; corresponding therapy mode, stimulating wave group and stimulating intensity are selected according to the characteristics of the brain waves; and at last a therapy scheme is input by a post-stage stimulating circuit so as to realize biofeedback type sleep therapy.

The invention relates to an automatic ABSECU detection device of an automobile, which comprises a valve abnormal simulation module, a valve driving abnormal simulation module, a sensor abnormal simulation module, a wheel speed simulation module, a power supply abnormal simulation module, a diagnosis module, a power supply module, a single chip microcomputer system and a personal computer (PC). Detection control program is conducted on the PC, indications are transmitted to the single chip microcomputer system through a serial port to control the abnormal simulation modules to work and simulate various working conditions of an ABSECU, the single chip microcomputer system collects voltage states at a valve output port and a warning lamp output port of the ABSECU and transmits the states to the PC, and the PC directly conducts information reading and control on the ABSECU through the diagnosis module and judges whether the ABSECU passes the detection or not according to the port voltage states and the diagnosis communication response to achieve full-aspect detection of the quality of the ABSECU. The automatic ABSECU detection device of the automobile can quickly and comprehensively conduct delivery quality detection on the ABSECU.

The invention discloses a portable fruit picking device. The upper end of a stand rod is provided with an upper pulley, the lower end of the stand rod is provided with a lower pulley, a rope is wound on the upper pulley and the lower pulley, the two sides of the stand rod are provided with a left guide rail and a right guide rail respectively, the inside of the left guide rail and the inside of the right guide rail are respectively provided with a sliding block, each sliding block is provided with four idler wheels, the idler wheels of the sliding blocks allow the sliding blocks to freely slide in the left guide rail and the right guide rail respectively, the upper end of each sliding block is provided with a pull rod, each pull rod is provided with a through hole, the sliding blocks in the guide rails on the two sides are respectively fixedly provided with a fixing ring, the lower sides of the two fixing rings are respectively provided with a bag, the portion, on the upper pulley, of the rope is tied to the inside of the through hole in the left sliding block, the portion, on the lower pulley, of the rope is tied to the inside of the through hole in the right sliding block, the upper end of the stand rod is provided with a fixed knife and a movable knife, the fixed knife is arranged over the center line of the left guide rail and the center line of the right guide rail, the movable knife can rotate by 90 degrees under drive of a steering engine, and the steering engine is controlled to rotate through a single chip microcomputer system. The portable fruit picking device can be suitable for being used for picking of various kinds of fruits, the fruits cannot be damaged, production efficiency can be improved, labor is saved and cost is reduced.

The invention discloses a lane changing assistance early warning system. A right rear radar sensor and a left rear radar sensor used for detecting the two sides of the rear area are arranged on the two sides of a vehicle respectively, the right rear radar sensor and the left rear radar sensor output detection signals to a main control unit through a CAN bus, and the main control unit outputs a warning signal to a warning control unit. The early warning system is realized based on a lane changing assistance control unit of a single-chip microcomputer system and the DSP-based millimeter-wave radar sensors installed on the two sides of the rear area of the vehicle, and communication between the lane changing assistance control unit and the millimeter-wave radar sensors is achieved through the CAN bus; furthermore, the early warning system can be expanded by adding algorithms and radar modules, the expandability of the system is improved, and then an active safe system capable of achieving rear collision prevention, door opening warning and front collision prevention is obtained.

The invention discloses a three-Level SVPWM method with neutral-point balancing and common-mode voltage suppression capabilities. The problem of unbalanced neutral point potential occurs when a three-phase T-type three-level inverter applied to a permanent magnet synchronous motor vector transformation control system adopts a single power supply scheme, which usually leads to performance reduction of the inverter. The three-Level SVPWM method aims to maintain neutral point balance of the three-level inverter under more complex working conditions without changing hardware structure and increasing size and cost of the inverter significantly through improving the traditional SVPWM method; the three-Level SVPWM method further improves the common-mode voltage suppression capability, reduces impact to motor insulation, prolongs the service life of the motor, reduces maintenance cost, and improves the operation stability of the motor control system; and the improved SVPWM method is suitable for digitization, and the calculation workload during the neutral point balance regulation process is small, thereby facilitating real-time control of a microcomputer system.

The invention provides an intelligent cost control electric energy meter and a clock calibration method. The intelligent cost control electric energy meter is characterized in that the intelligent cost control electric energy meter takes a single-chip microcomputer system integrating a hardware clock as a basis; the single-chip microcomputer system integrating the hardware clock comprises a single-chip microcomputer integrating the hardware clock, a crystal oscillator and a temperature compensation circuit; and the crystal oscillator is connected with the single-chip microcomputer integrating the hardware clock, and the temperature compensation circuit is connected with the single-chip microcomputer integrating the hardware clock. The clock calibration method comprises the steps of calculating a temperature-frequency error curve equation of the intelligent cost control electric energy meter according to a plurality of groups of measured temperature and frequency error corresponding values, and using the single-chip microcomputer of the intelligent cost control electric energy meter to perform clock frequency regulation according to frequency error. The intelligent cost control electric energy meter provided by the invention takes the single-chip microcomputer system integrating the hardware clock as the basis, the external crystal oscillator is taken as reference frequency of the internal hardware clock, different temperature points are compensated according to the temperature and frequency properties of the crystal oscillator, and the internal hardware clock single-chip microcomputer adopting software compensation can not only meet the requirements on precision in a full-temperature range and realize high reliability, but also reduce the cost.

The present invention relates to a simulating detecting technology for focusing control circuit of remote sensors, in particular to a simulating detecting method for focusing control circuit of space optical remote sensor, which connects a closed loop system for focusing control simulating test with a tested focusing control circuit to detect impulse quantity, breadth, frequency and phase position signal of the focusing control circuit. Wherein, the closed loop system is composed of a voltage regulating circuit 3, an analog-to-digital converting circuit 5, a microcomputer system 6 and a serial communication circuit 7. The detecting procedures include: Regulating voltage of the control signal of the focusing control circuit, collecting and preprocessing signals of the focusing control circuit and detecting impulse quantity, breadth, frequency and phase position signal of the focusing control circuit, and displaying detected error information on screen of the microcomputer. The present invention can realize simulating test for focusing control circuit of space optical remote sensor on ground to meet demands for multifunction, long-time and quick detection.