125 results about "Passive infrared sensor" patented technology

An RFID transponder for use in a security system based upon RFID techniques. The RFID transponder may be connected to an intrusion sensor. Example intrusion sensors are magnetically sensitive relay or LED detectors. The RFID transponder may also be connected to a passive infrared sensor. The RFID transponder can contain a battery, and the battery can be recharged by receiving and converting RF energy transmitted by the RFID reader. The security system also supports RFID transponders that may be carried by persons or animals, of that may contain a button used to signal an event such as an emergency. The RFID transponder typically uses backscatter modulation for responses, and can accept various modulation techniques for inbound wireless communications. The RFID transponder only responds when permitted.

New systems and methods for remotely monitoring the activity, security, and health of an individual are provided. The monitoring system can be used to monitor both residence security and typical residential activity that is linked to the well being and health of an individual and can alert a third party when there is a digression from a predetermined set parameters. The monitoring system can incorporate a number of sensing elements including door opening and closing detection elements, passive infrared sensors, energy sensors for detecting the turning on and off of general household appliances, weighing scales, systolic blood pressure or pulse pressure measurement apparatus, bioelectrical impedance analysis measurement apparatus, breath analysis, and blood-based biological marker detection and quantification.

The invention relates to a traffic violation snapshotting system and a traffic violation snapshotting method. A device comprises an L-shaped metal rod piece, a passive infrared sensor, a sensor signal amplification and shaping circuit, a camera, an image collector, a photographing light supplement lamp, a synchronous light supplement controller, a signal lamp detection circuit, a snapshotting system controller, a warning lamp, a voice output device and a video output device. The method detects non-motorized vehicles and pedestrians by adopting the passive infrared sensor, conducts automatic control, snapshotting and evidence obtaining on a behavioral course of a field violated person to serve as off line data processing, is applicable to the field of road traffic, obtains images and videos of the non-motorized vehicles violating the traffic and violation behaviors of the pedestrians in real time, is applicable to the snapshotting and the evidence obtaining of the violation behaviors of the non-motorized vehicles and the pedestrians on a road at present, has an acousto-optic warning function, can prompt the violated non-motorized vehicles and the pedestrians, can store the videos and the images, and facilitates later data statistics, analysis and calling.

The presence detector has a passive infrared sensor for detecting the presence of persons in a room, an image sensor operating in the visible spectral range and an electronic evaluator for the evaluation of signals from these sensors. The signal from the passive infrared sensor is used to actuate the image sensor and, if necessary, to switch on the room lighting. Once activated, the image sensor is used to detect both movement and occupancy of a space being monitored. Application of the presence detector for the "on-demand" activation and / or control of conditioning facilities of a room, wherein the signals of both sensors are used for the control of the conditioning facility.

A device (10) includes a passive infrared sensor (20) for user interface. When a user places his finger over the infrared sensor (20), the sensor (20) generate a digital signal indicating the time, position, or movement of the user finger over the sensor (20). A digital signal processing unit (12) processes the digital signal through preinstalled algorithms and generates a command to execute the user instruction through infrared interface. In operation, the user finger does not need to touch or press the infrared sensor (20). In addition, the passive infrared sensor (20) may be packaged under a cover to protect the sensor (20) from hazardous elements in the environment.

A method and a device which are applied to the using field of a high-brightness laser projection machine and used for protecting human eyes are characterized in that a sensor is utilized to monitor a projecting light beam area of the high-brightness laser projection machine, a virtual fence is built in a hard-light dangerous area, and anyone is effectively prevented from entering the dangerous area by means of the method and the device; preferably, an ultrasonic wave sensor is utilized for detecting a human or an object in the projection area; a controller is used for collecting emission and return time of ultrasonic waves, the specific position of the human or the object in the front area is calculated and a shape and a size of the front object are generally analyzed and judged, and a passive infrared sensor provides judgment data about whether the object is lived; and when the controller judges that an object which is harmful to the human or the human eyes is located within a safe distance of the projection machine, a command is sent to the projection machine, so that the projecting light beam output is closed or the output brightness is reduced, the human eyes avoid injury caused by hard lights, or otherwise, normal projection display is not influenced.

The invention provides a system and a method for tracking a moving target based on a wireless sensor network. The system comprises a sink node, a gateway, a server and a plurality of sensor node devices; and the tracking method comprises the following steps: evenly arranging the sensor node devices in a target monitoring area; starting the sensor node devices and server software, and making preparation for receiving data of the wireless sensor network; when a passive infrared sensor detects a target, starting ultrasonic ranging and operating Extended Kalman Filtering Algorithm to obtain a target position coordinate; adopting a principle of a minimum covariance matrix track to select a task node of the next time; and reading initial data from the sink node through the gateway, drawing a data curve and a target track, saving the data, and transmitting a server instruction to a node of a specified ID through the gateway by the server. The system and the method can accurately detect and report the position of the moving target in a monitoring area, adopt an effective sensor awakening mechanism and greatly save energy consumption of the nodes.

A passive infrared sensor has two detector elements, each of which has a positive part and a negative part, with each detector element generating respective first and second signals. The signals are added together to render a “sum” signal and are also subtracted one from the other to render a “difference” signal, and a moving object is indicated only when the “sum” signal has a frequency different than the frequency of the “difference” signal.

A light fixture has motion detection circuitry enclosed within a motion detector housing. The motion detector housing contains at least one thermal detector such as a passive infrared sensor, the sensor having a detection angle. At least one adjustable blind is housed within the housing adjacent to the infrared sensor, and the blind is adjustable to block and limit the detection angle of the sensor. The blind may be directly connected to a knob on a control panel that allows the user to alter the angle of the blind. Two or more blinds may be used on the interior of the housing, to increase adjustability of the detection angle.

A passive infrared sensor uses two detectors having elements of different configurations such that each element outputs a respective frequency when an object moves in front of it. Based on the presence of two frequencies with similar peak and / or slope characteristics, a motion signal is output to, e.g., activate an alarm. In another embodiment the detectors have plural elements with the elements of one detector being wired in a dimension that is orthogonal to the dimension in which the elements of the other detector are wired. The signals from the detectors are combined to determine motion and size of object. The detector elements can also be configured differently from each other as in the first embodiment, and the polarities of signals can be used to determine direction of motion. In yet another embodiment the detectors can be of the same size but have optics of different focal lengths.

Systems and techniques are provided for motion sensor adjustment. A signal indicating that a moving heat source was detected by a passive infrared sensor may be received. A signal including a current temperature may be received. It may be determined based on the current temperature and at least one previous temperature that an area in proximity to the passive infrared sensor has experienced a temperature change. In response to the determination that the area in proximity to the passive infrared sensor has experienced a temperature change, the signal indicating that a moving heat source was detected by the passive infrared sensor may be disregarded as a false alert and no indication of motion detected may be sent.

The invention discloses an elderly people living alone-oriented intelligent lighting and alarm system. According to the elderly people living alone-oriented intelligent lighting and alarm system disclosed by the invention, trace infrared rays emitted from a human body are monitored by adopting a passive infrared sensor array, and therefore, human body localization and human body tracking are realized; states of elderly people can be identified during general activities and at the time that an accident occurs, and an alarm is given automatically when unforeseen circumstances occur; the elderly people living alone-oriented intelligent lighting and alarm system is used for nursing on the elderly people living alone; as the elderly people living alone-oriented intelligent lighting and alarm system is a non-contact elderly people nursing system, private lives of the elderly people are not influenced, the repulsion of the elderly people cannot be caused, and convenience is provided for the lives of the elderly people while nursing is realized. The elderly people living alone-oriented intelligent lighting and alarm system disclosed by the invention is not harmful to health, and is environmentally friendly and energy-saving.

The invention relates to a human body detector, in particular to a human body infrared detector with a self-regulating function. The human body infrared detector comprises a master control unit, a passive infrared sensor circuit unit electrically connected with the master control unit through a signal amplifying circuit unit, a multicolor light-emitting circuit unit, a signal output circuit unit and a power source circuit unit for supplying power, wherein the multicolor light-emitting circuit unit and the signal output circuit unit are electrically connected with the master control unit. The multicolor light-emitting circuit unit comprises a plurality of different-color light-emitting elements which are respectively and electrically connected onto the master control unit, and the passive infrared sensor circuit unit comprises a passive infrared sensor which is arranged at the position where direct light or diffuse reflection light of all light-emitting elements can be received. The invention further discloses a working method of the human body infrared detector with the self-regulation function. The working method includes steps of: (1) human body detection; and (2) automatic regulation. The human body infrared detector is good in stability and capable of resisting changing of ambient light, and a working state lamp is attractive.

The present invention, in one form, is an absolute prevention system that will not allow anyone to leave an infant / child or pet in a vehicle unattended mistakenly or intentionally. The system comprises an ECM / ECU with auxiliary wiring connections from the host vehicle wiring, such as the ignition, A / C and heat, door ajar, vehicle seat weight sensors and ABS sensor, interior display screen, door locks, power windows, interior speakers and the vehicles' theft alarm system. In addition, the ECM / ECU will allow connections for a flow sensor / meter, passive infrared sensors, temperature sensor, wireless antenna, voice module, ISO pet chip reader and a hardwired harness. The ECM / ECU is capable of employing 911, GPS location and text message logged love ones.

The invention provides a bus intelligence operation method and a system. A pressure sensor at boarding and alighting door step can monitor a passenger load weight comprising a passenger weight and a carried article weight. Load detection in the bus is accurate so that an overload hazard caused by only number of people statistics is avoided and a bus operation safety factor is increased. Simultaneously, a passive infrared sensor is used to detect a human body height so that distinguishing of children and adults and a voice prompt of giving seat to children are realized. Through using giving seat calling button installed on a bus armrest, a voice prompt of giving seats to senior citizens, infirm people, patients, disabled people and pregnant women is realized. Consciousness of civilized giving seat of passengers is enhanced and civil bus ride in the bus is increased. An infrared range finding sensor is used to detect human body thickness. Through combining the human body thickness and the weight collected by the pressure sensor, accurate passenger flow volume monitoring and people counting are realized, which provides a basis for next bus operation optimization.

The invention discloses a personal portable device which comprises a carrier, a processor, a camera, two passive infrared sensors, a storage device and a power module. The passive infrared sensors are respectively arranged on two sides of the carrier. The camera adopts a gesture control mode and is opened up through time difference of double-handed action sensed by the passive infrared sensors, and relevant operation of picture taking or camera shooting can be controlled to complete through gesture recognition. The personal portable device is simple and convenient to operate, and the gesture control mode is humanized.

A system and method are disclosed for using gas detection techniques to determine if a room is vacant or occupied, and to activate, dim or deactivate lighting based on a detected occupancy status. The system and method may monitor a concentration of a first gas using a gas sensor such as a CO2 sensor. The space may also be monitored using second and third sensors, and a vacancy status of the space may be based on the concentration of the first gas and information from the second and third sensors. The second and third sensors can be passive infrared sensors, ultrasonic sensors, gas sensors, microwave sensors, audio sensors, or video sensors. An electrical load associated with the space may be controlled based on the determined occupancy / vacancy status. Other embodiments are described and claimed.

The invention provides a counting device, a counting method and an infrared detection system. The counting method includes the following steps: the pulse signals of passive infrared sensors are fused, so that a fused signal is obtained; when the pulse signal of the first passive infrared sensor is received in the fused signal, a timer is started, and a dynamic data frame is constructed; according to the set time length of the timer, whether the construction of the dynamic data frame is finished is determined; when the construction of the dynamic data frame is finished, according to a decision rule, the judgment of the moving directions and number of detected targets is carried out on the dynamic data frame, and thereby accurate counting is realized by using the passive infrared sensors.

A passive infrared sensor uses two detectors having elements of different configurations such that each element outputs a respective frequency when an object moves in front of it. Based on the presence of two frequencies with similar peak and / or slope characteristics, a motion signal is output to, e.g., activate an alarm. In another embodiment the detectors have plural elements with the elements of one detector being wired in a dimension that is orthogonal to the dimension in which the elements of the other detector are wired. The signals from the detectors are combined to determine motion and size of object. The detector elements can also be configured differently from each other as in the first embodiment, and the polarities of signals can be used to determine direction of motion.

An infrared detector (301) is provided which comprises a pyroelectric detector (303) having first and second sensing elements (345), an aperture stop (311), and a Fresnel lens array (305). The detector may be used as a passive infrared sensor unit for detecting intrusion into large openings.

A hand sanitizer unit for use with a pump bottle using a user activated dispensing pump with a main body housing an electronic circuit and defining a sensor aperture for use with two passive infrared sensors separated by a mechanical lens baffle to detect movement and direction of the movement. The unit also includes a pump sensor positioned to detect dispensing or lack thereof of a hand sanitizer to sound an alarm when motion is detected and the pump sensor does not detect activation of the user activated dispensing pump. Further items include a mute control switch, communication system, and a direction of motion switch connected to the microprocessor. The programming flow and method of operation of the unit are also disclosed.

A light fixture includes a frame for mounting the fixture to a wall or other structural element of a house or building. The fixture includes a controller and a sensor that detects heat. When the sensor detects a change in temperature or other condition, it signals the controller to turn the light on and / or off. The sensor may be a passive infrared sensor (PIR sensor) mounted directly to the fixture.

An automated animal deterrent apparatus for mounting to a culvert, the apparatus includes attached weatherproof housings to protect its other components; a passive infrared sensor to detect pest animals within a detection zone; a siren to produce noise; a scent releasing assembly to emit an odor; a strobe light to produce light flashes; a solar panel and battery to power the apparatus; and a tube and clamp assembly for attaching the apparatus to the end of a culvert.

Systems and methods of using active infrared (AIR) sensors to map a room of a home or building and determine whether an external portal (e.g., window and / or door) of the room is open or closed are provided. In particular, the systems and methods include outputting infrared (IR) light from an IR light source of an active infrared (AIR) sensor, receiving reflected IR light with a light sensor, and determining, with a processor coupled to the light sensor, whether a window of a room is open according to the received reflected IR light.

The invention relates to an intelligent monitoring system for energy conservation of electrical appliances, which is characterized in that the intelligent monitoring system comprises at least one intelligent energy-saving host and a temperature sensor unit, a door / window magnetic sensor unit, a passive infrared sensor, an infrared control unit and / or a power supply controller unit subject thereto, wherein the sensor unit comprises at least one corresponding sensor, and each signal output end of the sensor is respectively connected with an input interface circuit of the intelligent energy-saving host in a wire or wireless way; the intelligent energy-saving host is connected with a control center by a central tandem device in a wireless or wire way directly or through a routing forwarding unit; and the output end of the control signal of the intelligent energy-saving host is connected with the infrared control unit and / or the power supply controller unit, or is connected with a valve drive circuit and / or the power supply controller unit. Engineering installation such as wiring and the like in the room is not needed when the intelligent monitoring system adopts a wireless transmission mode. The intelligent monitoring system of the present invention has the characteristics of convenient usage, strong maneuverability, economy and practicability.

A passive infrared sensor has two or more detector element arrays, each consisting of positive polarity and negative polarity elements. The signals from the arrays are both summed together and subtracted from each other, and if either the sum or difference signal exceeds a threshold, detection is indicated.

The invention belongs to the technical field of infrared sensors, and discloses a wide-angle optical system for a passive-type infrared sensor. The system comprises an infrared sensor module group anda wide-angle lens group. The wide-angle lens group comprises a focusing lens array which is formed on the lens body and is used for gathering the infrared thermal radiation at each azimuth in a wideangle range; and a wide-angle concave surface or a wide-angle defocusing Fresnel surface which is formed on the lens body. The light gathered by the focusing lens array is refracted by the wide-angleconcave surface or the wide-angle defocusing Fresnel surface, and the view angle is reduced. After the reduction of the view angle, the gathered infrared thermal radiation is received by the infraredsensor module group. Through the setting of the focusing lens array which plays a role in focusing, the system achieves the gathering of the infrared thermal radiation at each azimuth in the wide angle range, and the gathered light is further refracted, and then the view angle is reduced. The light is received by the infrared sensor, thereby enabling the wide-angle detection function of the wholesystem. The overall structure of the system is easy to implement, and the system is small in size and is low in cost.

An apparatus configured to lift and lower a seat assembly of a toilet includes a case that is configured to be mounted to the toilet using mounting bolts of the seat assembly. The case includes a passive infrared sensor (PIR) that outputs a detection signal in response to motion, a motor having a lever coupled to the shaft of the motor via a coupler, a direction control unit that applies a motor supply voltage to drive the shaft of the motor in one of a clockwise or counterclockwise direction in response to the detection signal, and a battery to provide power to the apparatus.