124 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.

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.

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.

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.

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 passive infrared sensor wide-angle optical system, which includes: an infrared sensor module and a wide-angle lens group, and the wide-angle lens group includes: a condenser lens array formed on a lens body, used It is used to converge the infrared thermal radiation in all directions within a large viewing angle range; the wide-angle concave surface or wide-angle defocused Fresnel surface formed on the lens body, the light converged by the condenser lens array passes through the wide-angle concave surface or wide-angle defocused Fresnel surface Refraction, the viewing angle is narrowed, and the infrared heat radiation converged after the viewing angle is narrowed is received by the infrared sensor module. The present invention realizes the convergence of infrared thermal radiation in various directions within a wide viewing angle range by setting a converging lens array, and the converged light is further refracted to reduce the viewing angle and be received by the infrared sensor, thereby realizing the wide-angle of the entire infrared sensor system Detection, the overall structure is easy to realize, small in size and 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.