624 results about "Microwave sensor" patented technology

A system and method for monitoring the alertness of a subject are provided. A Doppler sensor is disposed to sense a parameter pertaining to the subject, the sensor being one of an acoustic sensor and a microwave sensor. Signals from the sensor are processed through an alertness monitoring algorithm for generating processed signals. It is thereafter determined whether an impairment of alertness event pertaining to the subject has occurred based on the processed signals. Feedback is then provided to the subject based on a determination of whether an impairment of alertness event pertaining to the subject has occurred.

An improved plasma applicator for remotely generating a plasma for use in semiconductor manufacturing is provided. In one embodiment, a plasma applicator is comprised of a chamber assembly, a removable waveguide adapter and a circular clamp which secures the adapter to the chamber assembly. The chamber assembly includes an aperture plate, a microwave transparent window, a chamber body and a microwave sensor which is mounted on the chamber body. The chamber body has a proximate end opening adapted to admit microwave energy into the cavity and a distal end disposed generally on the opposite side of the cavity from the proximate end opening. The chamber body further has a gas outlet port adapted to permit the flow of an excited gas out of the cavity and a gas inlet port adapted to admit a precursor gas into the cavity. The gas inlet port has a center axis which is disposed between the proximate end opening of the chamber body and the midpoint between the proximate end opening and the distal end of the body.

A system and method are disclosed for the generation and processing of waveforms utilized to modulate the carrier frequency of a microwave sensor employed, to determine the range and velocity of an object of interest. The system and method result in improved performance in environments with high levels of interference.

A feature extracting unit obtains sensor data from a plurality of sensors to calculate each feature. When an event determining unit determines the occurrence of an event based on each feature, a display data constructor generates remote-controller display data for displaying the event, and controls a remote-controller display device to display the remote-controller display data. When a user decision is input from a user input IF based on this display, a control unit controls the sensors to be turned ON or OFF. When an infrared sensor detects an abnormality, a microwave sensor whose power consumption is small after the infrared sensor is turned ON. When the microwave sensor detects an abnormality, a video camera and a microphone are turned ON, and the microwave sensor is turned OFF. A communication unit wirelessly transmits an image signal captured by the video camera and an audio signal processed by the microphone. Then, if the infrared sensor does not detect an abnormality, the video camera and the microphone are turned OFF. With this arrangement, power consumption can be suppressed. The present invention is applied to, for example, a security system, for example, for monitoring outside a vehicle by a video camera disposed in the vehicle when the vehicle is parked.

The invention discloses an intelligent recognition monitoring system and method for an unmanned substation. Based on a complete IPVS (internet protocol video monitoring system), the monitoring system comprises a front-end video acquisition layer, a video storage layer and a peripheral warning layer, the front-end video acquisition layer performs real-time video monitoring for the substation by the aid of a network camera with an intelligent recognition function and transmits monitoring data to a monitoring center through a network transmission layer, the video storage layer includes substation information on-site scatter storage and monitoring center concentrated storage, the peripheral warning layer acquires environmental information through an infrared / microwave sensor, a vibration detection device and a temperature and humidity acquisition device in real time, and the monitoring center receives abnormal information transmitted by the front-end video acquisition layer, further judges the information, sieves local alarms caused by normal operation and remotely gives an alarm when abnormity really exists. An intelligent recognition module adopts different recognition algorithms for different monitoring objects, the running state of a target device and the running environment of the substation can be rapidly analyzed, and unattended operation of the substation is truly realized.

An embodiment of the invention provides a main control intelligent lamp. The main control intelligent lamp mainly comprises a controller and a sensor unit; the sensor unit comprises a human body infrared sensor, a microwave sensor and a sound sensor; and the controller performs a comprehensive judgment according to an electric level signal transmitted by the human body infrared sensor, an electrical signal transmitted by the microwave sensor and a sound signal transmitted by the sound sensor, obtains whether a person is in external environment, and obtains state information of the person. The main control intelligent lamp can actively perceive whether the person is in the external environment, person states such as whether the person is active, and image, video, brightness, sound, gas, temperature, humidity, touch and other information of the external environment, and the main control intelligent lamp can achieve accurate perceptions of states of the person and the external environment, so electric control operation, for example, lamp light, an air-conditioning and an exhaust fan are started or closed, can be intelligently and accurately performed according to an actual condition of the external environment.

According to one embodiment, a microwave sensor includes: a first directional coupler (DC1) connected on a path of a transmission antenna unit (A1); a second directional coupler (DC2) connected on a path of a reception antenna unit (A2), and a determination unit (4) that obtains, based on monitor outputs from these, a scattering parameter S11 corresponding to a reflectance property at the transmission antenna unit (A1) and a scattering parameter S21 corresponding to a transmission property from the transmission antenna unit (A1) to the reception antenna unit (A2), and outputs an alarm signal (Dout2) when at least one of the scattering parameter S11 and the scattering parameter S21 continuously exhibits a value outside its respective pre-set range over a predetermined period of time.

The invention discloses a microwave sensor based on an NV color center diamond. A diamond internally containing a Nitrogen-Vacancy color center is adopted as a sensitive element, electronic energy level stimulation is achieved through lasers, an additionally-arranged static magnetic field is scanned, and the microwave frequency and the microwave intensity are measured through fluorescence intensity detection. Dependency of electronic rabi-flopping of the NV color center in the diamond on the external microwave magnetic field is brought into play, high theoretical accuracy and good stability are achieved, the microwave sensor has the advantages of being small in size, low in cost, high in accuracy, large in temperature range, simple in operation condition and the like and rotates on the basis of solid atoms, and the microwave sensor can serve in all the fields with the requirements for the low-cost high-accuracy microwave frequency and intensity detection in the future.

The invention discloses a microwave and video data fusion-based traffic detection device. The microwave and video data fusion-based traffic detection device comprises a video sensor, a microwave sensor, an A / D conversion module, a processor module, a network communication module, a traffic flow parameter data fusion module, a traffic flow management platform, a target tracking module and a traffic event and information management platform. The invention also discloses a microwave and video data fusion-based traffic detection method. According to the method, the device is adopted to realize information complementation and data fusion. With the device of the invention adopted, the reliability of a system can be improved, the accurate estimation of the position of a target can be provided, more accurate data can be obtained, and powerful parameters can be provided for relevant departments. According to the microwave and video data fusion-based traffic detection method, after the microwave sensor detects some traffic behaviors which are inputted into a database, the video sensor is controlled to take pictures, and then, whether obtained data are matched with the data of the database is analyzed, an alarm is given, and therefore, false alarm rate can be reduced, human and material resources can be reduced, and intelligent detection can be realized actually.

A method and device for detecting an intruder in a region with increased performance and decreased false alarms. The security device has a microwave sensor and a PIR sensor operatively coupled to a processor. To increase the performance of the security device the device determines distance information of an object in the region with the microwave sensor, processes the distance information to adapt a frequency response of the PIR sensor to provide a frequency adapted PIR signal, and determines if the object is an intruder by using the frequency adapted PIR signal.

A luminaire assembly comprises a housing, a plurality of light emitting diodes disposed within the housing, a microwave sensor disposed within the housing for detecting occupants in an area adjacent the housing, wherein the microwave sensor is in electrical communication with the light emitting diodes, and wherein the light emitting diodes are driven at a first light level and in response to the microwave sensor at a second light level.

A combined microwave sensor comprises metal ground at the bottom layer, dielectric at the middle layer, an input port, an output port I, a branched line coupler, a power divider, an open resonant ring, a microstrip line I and a microstrip line II, wherein the input port, the output port I, the branched line coupler, the power divider, the open resonant ring, the microstrip line I and the microstrip line II are arranged in the top layer. The input port and the output port I are connected with a vector network analyzer. The output side of the branched line coupler is provided with an isolated port and the output port I. The input end of the power divider is connected with the input port. The output port II and the output port III are connected with an annular directional coupler through a microstrip line. The open resonant ring is arranged between the power divider, the branched line coupler and the two microstrip lines. The combined microwave sensor has advantages of effectively eliminating background noise, realizing testing for weak background signals, and ensuring large offset of the sensor resonant frequency through small disturbance of the tested object. Therefore the combined microwave sensor provided by the invention has higher sensitivity and higher accuracy in dielectric constant measurement and can be used in high-sensitivity testing with small dielectric constant change.

The invention relates to a warning device for detecting persons left in a vehicle. When the condition that persons are left in the vehicle is judged through a microwave sensor and a sound sensor, a warner sends out sound / lamplight warning or sends out short message / phone / application prompt or risk warning prompt through a communication module. The warning device also has the in-vehicle high-temperature warning and smoke warning functions, and can be used for anti-theft warning. The invention also provides a warning method for detecting the persons left in the vehicle.

The invention relates to a life detection radar device, in particular to an ultra-wide bandwidth microwave chaos life detection radar device for detecting human body life feature information and distance information. The ultra-wide bandwidth microwave chaos life detection radar device can be used for disaster rescue and comprises a first signal generator, a first power splitter, a frequency mixer, a power amplifier, an ultra-wide bandwidth emitting antenna, an ultra-wide bandwidth receiving antenna, a low noise amplifier, an I / Q demodulator, a second signal generator, a second power splitter, a voltage-controlled phase shifter, an adjustable attenuator, a solid state microwave sensor, a third signal generator, a phase-locked amplifier and a signal collecting and processing module. The life feature information and the position information of trapped persons can be rapidly and accurately detected.

The invention relates to the field of rotating moving blade non-contact vibration measurement, and aims at effectively improving the measurement precision of vibration parameters and achieving the high-precision measurement of blade tip gaps. The technical scheme employed in the invention is that a moving blade tip gap and vibration parameter fusion measurement device based on microwave comprises a microwave sensor and a sensor drive module; the sensor drive module comprises a circulator, a phase-locked loop (PLL), a phase shifter, a frequency mixer, a low-pass filter circuit, a high-pass filter circuit, a single-chip microcomputer MCU, a multiplying unit, an adder, an automatic gain control circuit AGC, a comparator, and an A / D analog-digital signal converter; the device also comprise a data collection module which comprises an FPGA (field-programmable gate array), a digital signal processor (DSP), and an upper computer. The device is mainly used for the non-contact vibration measurement of a rotating moving blade.

The invention discloses a microwave remote sensing soil moisture monitoring system and a method thereof. The system comprises a soil moisture and ocean salinity (SMOS) satellite, a ground satellite receiving station, a data processing system, a global navigation satellite system (GNSS) signal source, a global navigation satellite system-reflection (GNSS-R) receiver, a mobile platform and a platform control system, wherein the SMOS satellite passively receives an L-band microwave signal transmitted by the earth surface, processes the signal through the data processing system and transmits the processed signal to a data analysis processing system; the GNSS-R receiver receives a GNSS direct signal and a forward scattered signal which is reflected by the ground and contains ground object information, and transmits the two signals to the data analysis processing system; and the data analysis processing system performs precision evaluation and inversion algorithm verification on soil moisture information. The ground real-time synchronous data acquired by the GNSS-R receiver is applied to precision evaluation and inversion algorithm verification of an SMOS soil moisture model of a passive microwave sensor so as to realize multi-scale and active and passive combined microwave remote sensing soil moisture monitoring.

The invention belongs to the field of early warning technologies for view dead zones of vehicles, and discloses a vehicle-mounted device and method for sharing pedestrian emergence information. The device for sharing the pedestrian emergence information comprises a vehicle, a first microwave sensor, a second microwave sensor, a display screen, a vehicle-mounted CAN bus, a data processing unit and a vehicle speed sensor, wherein the first microwave sensor is fixed to the center of the front end of the outer side of the vehicle, the second microwave sensor is fixed to the center of the rear end of the outer side of the vehicle, the display screen is arranged at the rear end of the outer side of the vehicle, the vehicle-mounted CAN bus is arranged on the vehicle, the data processing unit is arranged on the vehicle, the vehicle speed sensor is installed on a speed changer of the vehicle, the front side of the display screen is towards the rear of the vehicle, the vehicle speed sensor is electrically connected with the vehicle-mounted CAN bus, the signal input end of the data processing unit is electrically connected with the first microwave sensor, the second microwave sensor and the vehicle-mounted CAN bus, and the data processing unit is electrically connected with the display screen.

The invention provides a video recording instrument of a vehicle, which comprises human body induction equipment, an acceleration sensor, a photographing device, a control unit and a storage, wherein the human body induction equipment is used for generating a first signal when a human body approaches the human body induction equipment; the acceleration sensor is used for generating a second signal when the movement of an automobile is detected; the control unit drives the photographing device to automatically detect the human body and identify the face of the human body when an automobile is in a shut-down state if the first signal and the second signal are received and meet preset conditions, and stores the photographing data as special data in a first partition after the successful identification, and the control unit judges whether the second signal which meets the preset conditions exists when detecting that the automobile is in a startup state, and stores the photographing data as the special data in the first partition if the second signal which meets the preset conditions exists, or stores the photographing data as ordinary data in a second partition; and the storage is used for storing the special data. In the invention, the acquisition, the storage and the safe transmission of the photographing data carrying human face information of a person who approaches the automobile are realized by dint of a microwave sensor, the acceleration sensor and the photographing device.

A sensor comprising: a dielectric waveguide for guiding a microwave signal; and a dielectric reflector at an end of the dielectric waveguide to cause formation of a sensing field beyond an outer surface of the dielectric reflector.

According to an embodiment, a composite intrusion detection sensor includes a microwave sensor that transmits microwaves toward a detection area and based on reflected waves of the microwaves from an object present in the detection area detects and outputs distance information about a distance to the object and first distance change information about a distance change within a predetermined time interval; an image sensor that captures images within the detection area, and based on changes between images captured in a time series, detects and outputs on-image movement amount information, which represents the amount of movement of the detected object in the images within the predetermined time interval; and a computation means for judging, based on the distance information, the first distance change information, and the on-image movement amount information whether or not the object is an intruder.

The invention discloses an intelligent navigation system for the blind and a navigation method. The system includes a portable navigator that carries out double-directional communication through a data radio station and a remote assistance platform. The portable navigator takes an FPGA development board as a core and a microwave sensor, a camera, an infrared ultrasonic sensor, the data radio station, GPS, an earphone and a keyboard for the blind are connected on the FPGA development board. When indicating road information to the blind, the FPGA development board processes obtained moving object information, image information and barrier information, conducting audio prompt for the blind through the earphone; when a route planning for the blind is carried out, the keyboard for the blind inputs traveling information to the FPGA development board and transmits the information to the remote assistance platform through the data radio station; and after determining the traveling proposal, the remote assistance platform transmits the information to the FPGA developing board through the data radio station, and carrying out audio prompt for the blind through the earphone. The intelligent navigation system for the blind solves the problems of not being convenient, safe and real-time in the existing guidance ways.

The invention discloses a microwave induction control method and a microwave induction control device and relates to the technical field of application of microwave sensors. According to the method, an action system for judging whether persons enter or leave the scene or not is established by using the Doppler effect through the microwave induction control device; a switch of a power supply of an electrical appliance is controlled by identifying the action that human bodies enter or leave the scene; the microwave induction control device adopted by the method can be arranged inside the electrical appliance, so that the electrical appliance adopts a closed structure, and moisture resistance and electric shock prevention can be realized. In addition, according to the method, the action whether the human bodies leave or not can be identified, and the power supply of the electrical appliance is automatically closed when the human bodies leave the detection range and no person exist in the detection range. Besides, the device is low in power consumption; when the device is installed on the electrical appliance for use, the standby power consumption of the electrical appliance can be greatly reduced, and further the aims of saving energy and electricity are achieved.

The radiometric thermometer includes a microwave sensor and electronic means for processing the electrical signal delivered by the sensor. The electronic means includes means for preamplifying the electrical signal delivered by the microwave sensor; variable-gain amplification means with automatic gain control, which means amplify the signal delivered by the preamplification means, the amplification means having an automatic gain control signal that allows the gain to be automatically adjusted on the basis of the signal output by the amplification means, and electronic temperature measurement means for measuring temperature on the basis of the automatic gain control signal.

According to an embodiment, an intrusion detection sensor includes a microwave sensor (120) that transmits microwaves toward a detection area, receives the microwaves reflected by an object present in the detection area, and outputs a reflected wave reception intensity signal according to the received intensity; a direction variable antenna device (110); a scanning measurement means (131) that provides an instruction to scan the transmission / reception direction to the direction variable antenna device (110) to determine a relationship with the output of the reflected wave reception intensity signal; a detection target object presence determination means (132) that determines whether or not a detection target object is present based on the determined relationship; and an alarm signal output control means (133) that outputs an alarm signal when it is determined that a detection target object is present.

The invention relates to a microwave sensor based on substrate integrated waveguide and a microfluidic technology. The microwave sensor comprises a substrate integrated waveguide reentry resonant cavity and a microfluidic chip embedded into the resonant cavity. The resonant cavity comprises an upper cover plate and a lower base. The upper cover plate and the lower base comprise top metal layers, middle medium layers and bottom metal layers; and two grooves that are symmetrical relative to a transverse axis are etched on the left side and the right side of the top metal layer of the upper coverplate. The microfluidic chip is embedded into a groove in a central area of the upper cover plate. The middle medium layers of the upper cover plate and the lower base comprise a plurality of metal through holes for connecting the top metal layers and the bottom metal layers. Annular grooves are formed in the lower base, and capacitive posts are formed in the centers of the annular grooves. According to the sensor, the microfluidic chip is introduced into the substrate integrated waveguide reentry resonant cavity, and the high-sensitivity and high-accuracy sensor that is non-invasive and reusable and is integrated with other plane circuits easily is obtained through the advantages of a highly-concentrated electric field of the reentry resonant cavity and precise micro fluid control capability of the microfluidic chip.

The invention discloses an air conditioner control method, an air conditioner and a storage medium. The air conditioner control method includes the steps that an air blowing area of the air conditioner is acquired through a microwave sensor, and comprises a plurality of sub-air blowing areas; according to electromagnetic waves emitted by the microwave sensor and received reflecting waves, whetherthere are persons in the sub-air blowing areas or not is judged; if yes, human body information in the sub-air blowing areas is detected; and according to the human body information, an air blowing mode of the air conditioner is adjusted. According to the air conditioner control method, the air conditioner and the storage medium, the air blowing area and the specific human body information in theair blowing area are acquired, so that the air blowing mode of the air conditioner can be controlled according to the human body information, and therefore the humanized function that wind follows persons or wind avoids persons is achieved, and the comfort of a user during air blowing is improved.

A microwave sensor used for steam humidity detection belongs to the technical field of testing and is used to solve the problem of steam humidity detection. The technical solution is that it includes a cylindrical cavity with openings at both ends and a microwave signal transmission interface in the middle, and a ring divider is respectively arranged at both ends of the cylindrical cavity, and the ring divider is composed of It consists of 1 to 4 cylinders coaxial with the cylindrical cavity, one end of which is close to the port of the cylindrical cavity is connected with the cylindrical cavity, and the expansion coefficient of the ring separator is larger than that of the cylindrical cavity. The invention has the advantages of simple structure, convenient use and low requirements on the environment, and can realize high-precision online measurement of the humidity of flowing wet steam by cooperating with the microwave signal processing circuit.

A vehicular distance to a preceding vehicle is controlled on the basis of a mixed combination of a longer range radar sensor and shorter range microwave sensors.

The invention discloses a warehouse safety monitoring system, which is simple for installation, low in cost, high in reliability and convenient to use, saves energy and can realize remote wireless communication. The warehouse safety monitoring system is provided with a temperature sensor, a humidity sensor, a smog sensor, a microwave sensor, a bilinear infrared sensor and a camera, wherein the outputs of the temperature sensor, the humidity sensor, the smog sensor, the microwave sensor, the bilinear infrared sensor and the camera are connected with a microprocessor; the output of the microprocessor is respectively connected with a display device, a sound and light alarm, a driving execution unit, a standard interface and a remote wireless communication unit; and a driving execution circuit is connected with an environment regulating device.