23 results about "Passive infrared sensor" patented technology

The application discloses a pet care air purifier parameter intelligent control method and system, aiming at solving the problem that the existing purifier is difficult to identify the long-time stillness of pets in the monitoring blind area, resulting in the accumulation of local pollution. The method continuously receives the data stream of the visual sensor and the passive infrared sensor, and when no clear pet signal is detected within the preset time, the blind area intention inference instruction is activated, the multi-dimensional environmental abnormal signal of odor, local temperature and particulate matter is collected, and after time consistency, space correlation and comprehensive threshold correlation analysis, the adaptive purification strategy of fan speed fine tuning, filter optimization and directional airflow guidance is executed after the pet in the blind area is confirmed to be still. According to the recovery of pet activity or the weakening of environmental abnormalities, the method can be switched to the normal mode or the low-power mode. The application can accurately identify the still state of the pet in the blind area, remove the pollutants in a targeted manner, balance the purification efficiency, energy saving and low noise, and improve the fine management level of indoor air quality.

The invention relates to the technical field of Internet of Things monitoring, in particular to a 4G Cat.1 passive Internet of Things monitoring system and method based on Vsim. The method comprises the following steps: pre-storing network authentication information of at least two operators through a VSim software unit; establishing low-power-consumption network connection between the 4G Cat.1 communication unit and a preset cloud management platform according to the network authentication information in a terminal dormant state; the method comprises the following steps: continuously monitoring heat radiation change in a target monitoring area through a passive infrared sensor, and when an effective moving event is detected, generating a hardware interruption wake-up signal; and waking up the terminal according to the hardware interrupt wakeup signal, and obtaining compressed audio and video data of the target monitoring area through the terminal. According to the method, millisecond-level wakeup and optimal link maintenance under permanent endurance of the passive camera are realized through a VSim multi-operator dynamic switching and electric quantity self-adaption strategy.

Device for operating a passive infrared (PIR) detector with a first connection (IN) and a second connection (IP), the device comprising: - an electrical circuit arrangement (R G ), wherein the electrical circuit arrangement (R G ) forms a leakage resistance between the first terminal (IN) and the second terminal (IP) of the passive infrared detector (PIR) to discharge the first terminal (IN) and the second terminal (IP) of the passive infrared detector (PIR); wherein the electrical circuit arrangement (R G ) includes a switch-capacitor circuit with transfer gates and storage capacities; and the device is set up for this purpose: - the transfer gates of the electrical circuit arrangement (R G) to switch alternately with a first clock (φ1) and a second clock (Φ2), and to advance a charge quantity by one node with each half-clock using the storage capacities, whereby the first clock (φ1) and the second clock (Φ2) do not overlap and, apart from the non-overlap, the first clock (φ1) is the inverse of the second clock (Φ2); and - to switch off the first clock (φ1) and the second clock (Φ2) during a measurement phase, so that the device is in a measurement state and the charge flow through the electrical circuit arrangement (R G ) is prevented.

The present application relates to the technical field of intelligent monitoring and security, and particularly relates to a human and animal target detection method and device based on a passive infrared sensor, wherein the method comprises: collecting and processing energy change signals of a target environment by a signal amplification circuit of the passive infrared sensor to obtain a plurality of data frames; performing multi-domain feature extraction on the plurality of data frames to obtain a plurality of initial feature vectors; performing discriminability evaluation and correlation analysis on the plurality of initial feature vectors to screen out a final feature vector; iteratively executing the foregoing process to construct and update a target detection feature library; randomly sampling a plurality of training subsets from the target detection feature library to train a plurality of decision trees, and calculating out-of-bag error rates and corresponding weights of each decision tree to perform weighted voting statistics, and then deciding whether there is a human / animal target in the target environment. Thus, the problem that existing passive infrared sensors are difficult to meet the requirements of high accuracy and strong adaptability in complex outdoor scenes is solved.

An intelligent robotic system for detecting and rescuing living people in disaster areas, consisting of: a mobile chassis configured for crossing debris-strewn and uneven terrain, the chassis comprising several DC geared motors driven by an H-bridge motor driver; a control unit with a microcontroller configured to receive sensor data, perform navigation and detection techniques, and transmit information via wireless communication; a subsystem for person detection comprising at least one passive infrared sensor for detecting heat signatures, at least one microwave Doppler radar module for detecting micro-movements indicative of breathing or heartbeat, and an ultrasonic sensor array for proximity and obstacle detection; an environmental monitoring subsystem comprising at least one gas sensor configured to detect hazardous gases selected from methane, smoke, propane or carbon monoxide; a visual feedback subsystem that includes a camera module configured to capture real-time images and video streams; a wireless communication interface configured for transmitting multi-sensor data and video feeds to a remote mobile application interface; and a power supply comprising at least one rechargeable battery that is operationally connected to the control unit, sensors and the propulsion system, The robot system is configured to detect the presence of living people, monitor environmental hazards, and inform rescue teams in disaster areas about the current situation in real time.

A method of controlling a field of view of a passive infrared sensor, the method comprising: providing a passive infrared sensor comprising: an infrared detector configured to detect infrared signals from a plurality of detection zones; and an electrochromic mask comprising a plurality of electrochromic sections; and applying a voltage to one or more of the plurality of electrochromic sections to control transmission of a predetermined range of infrared signals to the detector from one or more of the plurality of detection zones.

This document describes the technology related to a modular floodlight system. The modular floodlight system includes a floodlight unit with a main housing supporting multiple floodlights and a modular camera unit. The main housing includes a magnetic mount that magnetically secures the camera unit to a mounting surface and enables three-axis hinged connection of the camera unit relative to the main housing. The main housing also includes a power supply unit that supplies power to the camera unit and the floodlights. The floodlights are assembled to opposite sides of the main housing. Furthermore, the main housing includes a passive infrared sensor that extends and complements the motion detection capabilities of the camera unit. The modularity of the modular floodlight system allows the camera unit to be easily replaced with another modular unit, simplifies installation for consumers, and improves the reconfigurability of the modular floodlight system.

A rear occupant alert device according to an embodiment comprises a first object detection unit; a second object detection unit; and a control unit configured to control operations of the first and second object detection units, wherein the first object detection unit includes a passive infrared sensor (PIR) sensor, wherein the second object detection unit includes a radar module, and the control unit is configured to control a movement of an object inside a vehicle through the first object detection unit, and to control a movement of an object through the second object detection unit when the movement of the object is not detected through the first object detection unit.

This invention provides a state control method, system, and camera for a camera, applicable to the field of cameras. The camera's processor controls the camera's state based on the triggering of a first signal and a second signal, controlling the camera to be in an active or standby state. The first signal comes from a passive infrared sensor, and the second signal comes from radar. The first signal is triggered when someone moves within the detection area of ​​the passive infrared sensor, and the second signal is triggered when someone moves within the detection area of ​​the radar. The detection areas of the passive infrared sensor and the radar overlap. This effectively reduces the camera's power consumption, increases standby time, and helps reduce invalid video files.

The utility model discloses a long-distance passive infrared sensing device and a lighting system using the same. The long-distance passive infrared sensing device comprises a passive infrared sensor, an amplifier, a comparator and a reflection cup, the amplifier is electrically connected with the passive infrared sensor. The comparator is electrically connected with the amplifier. The reflective cup is adjacent to the passive infrared sensor. And the outer surface of the reflecting cup is a reflecting surface. The reflecting surface of the reflecting cup is configured to reflect the infrared rays to the passive infrared sensor. When a long-distance human body emits infrared rays with the wavelength of about 10 microns, the reflection cup can be used as an element for collecting signals, increasing the signal intensity and increasing the sensing distance.

The application relates to the technical field of virtual reality, and relates to a 5D-based virtual film and television interaction and motion capture system. The 5D-based virtual film and television interaction and motion capture system specifically comprises a human body recognition device, a display device, a data processing device and an environment rendering device. The 5D virtual film and television interaction and motion capture system based on double Kinect sensor fusion is established, the motion information capture functions of the human hand and the human leg with prominent human body movement characteristics are respectively established, the detection precision is improved, a passive infrared sensor is additionally arranged, the human body is recognized and positioned in a relatively dark environment, a light control technology is established, the light brightness is automatically adjusted according to the dynamic projection environment scene change, the light changes according to the change of the content of the animation, and the self-defined light control system comprises touch screen control and handheld wireless remote control, so that the experience of participants is improved.

The invention discloses a low-power-consumption multifunctional sensing node which comprises a power management module, a low-power-consumption control module, a multimode sensing module and a communication module. The low-power-consumption control module is connected with the power management module, the multi-mode sensing module and the communication module. A power supply input by the VBAT forms Vmain after passing through the voltage stabilizing unit, and supplies power to the low-power-consumption control module, the passive infrared sensor and the low-power-consumption trigger front end of the radio frequency energy detection unit; a power supply input by the VBAT forms Vsense after passing through a high-side switch unit, and supplies power to the infrared signal detection module, the radio frequency energy detection module and the acoustic acquisition unit; and the power supply input by the VBAT passes through the other high-side switch unit to form Vcom to supply power to the communication module. According to the invention, the high-side P-MOSFET is connected in series with the switch and is matched with the Schottky diode to realize the physical power-off topology of reverse protection, so that the low false alarm rate and low average power consumption are realized.

This application discloses an intrusion detection method, electronic device, and computer-readable storage medium. The method includes: acquiring first radiation energy collected by multiple passive infrared sensors at a current moment, wherein at least some of the passive infrared sensors are configured to detect different sub-regions within a target area; determining the current energy change of the target area at the current moment based on the first radiation energy collected by each passive infrared sensor; acquiring environmental parameters at the current moment and determining an energy change threshold based on the environmental parameters; and determining whether an intrusion target exists in the target area at the current moment based on the current energy change and the energy change threshold. This method can improve the success rate of intrusion detection in complex environments.

An energy device control apparatus for controlling lighting, HVAC or other energy devices of a particular area of a building is provided. The apparatus includes a presence sensor, a passive infrared sensor, a microprocessor, and a controller to control the energy device by detecting human occupancy in the area of the building.

A device for occupancy detection of a space includes a passive infrared (PIR) sensor having a fixed field of view; an infrared reflector positioned proximate to the PIR sensor for re-directing infrared radiation received from within the space toward the PIR sensor; an electromechanical device coupled to the infrared reflector and operative to alter a pointing angle thereof in response to a control signal; and, detection and control circuitry (or a microcontroller), coupled to the PIR sensor and the electromechanical device, operative to receive a signal from the PIR sensor indicative of motion of a person within the space, and further operative to selectively alter the pointing angle of the infrared reflector, using the electromechanical device, whereby the relative position of the person is shifted within the fixed field of view of the PIR sensor, thereby simulating motion of the person even when stationary.

The utility model discloses an ultra-wide-angle passive infrared sensing device and a lighting system using the same. The ultra-wide-angle passive infrared sensing device comprises a circuit board, a first passive infrared sensor and two second passive infrared sensors, the circuit board has a first surface and a second surface opposite to each other. The first passive infrared sensor is located on the first surface of the circuit board and has a first sensing area. The two second passive infrared sensors are located on the second surface of the circuit board and are adjacent to each other. Each of the two second passive infrared sensors is provided with a second sensing area, and the normal direction of the first sensing area is different from the two normal directions of the two second sensing areas. The ultra-wide-angle passive infrared sensing device can effectively improve the infrared sensing angle.

The invention relates to an energy-saving type human body induction small night lamp, and relates to the technical field of energy-saving lamps, the energy-saving type human body induction small night lamp comprises a lamp holder and a lamp cover detachably installed on the front side of the lamp holder, a circuit board is fixedly arranged on the front side face of the lamp holder, a plug connected with a wall socket in an inserted mode is fixedly arranged on the back side of the lamp holder, and LED lamp beads are fixedly arranged on the circuit board; a photosensitive sensor for detecting light brightness and a passive infrared sensor for detecting infrared rays radiated by a human body are fixedly arranged on the side face, facing the lamp cover, of the circuit board. The photosensitive sensor suppresses the work of the passive infrared sensor after the optical signal is higher than a threshold value, and relieves the suppression of the passive infrared sensor after the optical signal is lower than the threshold value; according to the small night lamp, when the ambient light is sufficient, the photosensitive sensor inhibits the passive infrared sensor from working, and invalid lighting of the small night lamp is avoided; only when illumination is insufficient (such as at night) and the passive infrared sensor detects 8-14 [mu] m infrared radiation of a human body, the circuit is conducted to enable the LED lamp beads to emit light, and energy waste caused by continuous lighting at night is avoided.

The invention discloses a self-adaptive video recording method, a control device and a hunting camera, and relates to the technical field of cameras, the self-adaptive video recording method is applied to the hunting camera, and the method comprises the following steps: under the condition that a passive infrared sensor triggers a detection signal, the hunting camera is controlled to start basic video recording, and the basic video recording has an initial target recording duration; continuously acquiring a video picture shot in a video recording process, and identifying an object of the acquired video picture to obtain an object identification result signal; when it is determined that the target animal category does not exist in the video picture based on the object recognition result signal, video recording is stopped after the current basic video recording is finished; and when it is determined that the target animal category exists in the video picture based on the object recognition result signal and the time difference between the current recording time length of the hunting camera and the target recording time length is smaller than the first time difference, the target recording time length is prolonged. The invention aims to improve the hunting video recording capability of the hunting camera so as to improve the content effectiveness of the picture shot by the hunting camera.

The invention relates to security methods, while protecting against false activations, and it relates to a method for detecting a motion of objects that utilizes a passive infrared sensor. The invention may be used for security alarm systems. A method for detecting an object motion is proposed, the method comprising: detecting a motion within sensitivity areas of at least two pyrosensors and generating a signal from said pyrosensors.

An insect trap includes a combination of one or more components used to classify the insect according to a genus and species. The trap includes an imaging device, a digital microphone, and passive infrared sensors at the entrance of the trap to sense wing-beat frequencies and size of the insect (to identify entry of a mosquito). A lamb-skin membrane, filled with an insect attractant such as carbon dioxide mixed with gas air inside, mimics human skin so that the insect can rest on the membrane and even pierce the membrane as if a blood meal is available. An imaging device such as a passive infrared sensor or a camera gathers image data of the insect. The insect may be a mosquito.

A hardware-based presence sensor system and method of operation that includes providing a hardware computer chip with a microcontroller, an environmental sensor configured to measure intensity of ambient light, ambient temperature, ambient humidity, atmospheric pressure, and ambient carbon dioxide, a thermal camera configured to detect, track, and count a person, animal, or predetermined physical object, with a radar sensor configured to detect, track, and count a person, animal, or predetermined physical object in an ambient environment with an emitted radio frequency, and with a passive infrared sensor configured to detect changes in ambient infrared radiation. The microcontroller is operably configured to independently receive presence signals from each of the environmental sensor, thermal camera, the radar sensor, and the passive infrared sensor and execute a programmed presence algorithm utilizing the presence signals to generate a presence detection electronic-based indicator.

The invention belongs to the field of home-based care intelligent monitoring, aims to solve the problems of privacy disclosure, low collaboration efficiency, single monitoring and the like in the prior art, and provides a wearable and non-imaging activity detection method. A passive infrared sensor and a 24GHz non-imaging microwave radar are adopted to construct a cooperative system, an edge calculation and privacy enhancement module is matched, and through three-level hierarchical scheduling of infrared pre-triggering and microwave radar verification and scenarized dynamic weight fusion, the anti-interference capability and low-power-consumption balance are improved; triple privacy protection of non-imaging acquisition of a signal layer, local calculation of a processing layer and encryption and desensitization of a transmission layer is constructed, and privacy leakage is completely eradicated; six types of activity states are identified through multi-feature joint, a rule baseline is constructed in combination with 7-day data, and'real-time + rule deviation 'two-dimensional alarm is realized. The method does not need the cooperation of the elderly, reduces the false alarm rate by more than 40%, adapts to various home scenes and the requirements of the elderly, and is high in practicability and easy to popularize.

The present disclosure provides an electronic device. The electronic device may be configured to: receive first sensor data obtained by a gyro sensor and second sensor data obtained by a passive infrared sensor from a wearable electronic device through a communication circuit; calculate a y-axis angle of a finger of a user wearing the wearable electronic device on the basis of the first sensor data; compensate for the y-axis angle on the basis of a predetermined reference point in response to detecting that the finger wearing the wearable device is in a folded state on the basis of the second sensor data; and generate a control signal corresponding to the compensated y-axis angle to control a screen output through a display.