638 results about "Life detection" patented technology

The present invention provides a circuit interrupting device, preferably a ground fault circuit interrupter (GFCI), which contains a dual-function test button having a short pole and a long pole positioned underneath the dual-function test button. When the GFCI is properly wired and powered, a depression of the dual-function test button allows the short pole to operatively connect to a conductive pin and generate a leakage current to test the components of the GFCI. If all of the components are functioned properly, the GFCI can be reset. If not, the GFCI cannot be reset. When the GFCI is miswired or reverse wired and not powered, a depression of the dual-function test button does not test the components of the GFCI. However, a further depression of the dual-function test button allows the long pole presses against a tripping lever on a locking member in a tripping device which mechanically trip the GFCI. The present invention further provides an end-of-life detection circuit which can automatically generates a simulated leakage current to test the components in the GFCI. If one or more components are not functioned properly, the end-of-life circuit prevents the GFCI from resetting.

The present invention provides a set of circuits which is capable of performing an automatic check on main components of a circuit interrupting device when the circuit interrupting device is properly powered and the device is at a tripped state to determine whether these main components function normally. The results of the automatic check can be detected by depressing a reset button in the circuit interrupting device. If the reset button can be depressed, the main components function normally. Alternatively, the results can be automatically displayed by a showing on the face lid of the circuit interrupting device of either a green light, which means that the main components function normally, or a red or yellow light or no light, which means that at least one of the main components in the circuit interrupting device does not function properly. The present invention also provides an end-of-service-life detection integrated circuit chip capable of receiving and transmitting an automatic check signal and determining whether or not the circuit interrupting device can be reset. The preferred circuit interrupting device is a ground fault circuit interrupter (GFCI).

The invention discloses a lead storage battery accelerated life detection method. According to the method, a lead storage battery is subjected to high-temperature environmental detection, and a pulse is added in the detection process, so that a detected result is approximate to a result of a 100% DOD life test at the normal temperature, and the cycle life of the lead-acid storage battery can be tested and estimated more quickly; the whole detection period is about 2-4 months, the detection time is remarkably shortened, data are true, the performance of the battery can be evaluated, and the speed of researching and developing new technologies and new products by an enterprise or a research and development unit can be remarkably increased.

A multi-function feedback sense input in an electronic ballast control indicates a number of lamp faults on the basis of lamp parameters exceeding specified thresholds. An end of life detection is achieved by conditioning a lamp feedback with a DC offset to provide a simple threshold comparison to determine if the lamp exceeds specified operational boundaries. An open filament, absent lamp or broken cathode is detected on the same feedback sense by detecting an open circuit in the lamp filament and driving the sense feedback to a shutdown state in the event of a filament open circuit. The ballast control includes a current sense feedback for detecting overcurrent conditions as well as lamp faults so that the control detects an end of life condition, lamp absence, broken lamp, open filament, broken cathode, overcurrent, hardswitching or failure to ignite fault with a minimum number of feedback sensors. The ballast control provides a number of protections with a simplified circuit to reduce cost and improve functionality of the electronic ballast control.

The present invention provides an optical fiber grating strain sensor calibration and wear life detection method, including the steps: a) building a testing system in which a broadband light source, an optical circulator, an optical fiber grating demodulation instrument, a single mode fiber, a Bragg optical fiber grating sensor, an optical fiber, a resistance strain gauge, a fixture, a constant strength cantilever beam and a strain acquisition device are connected in sequence; b) exerting loads on the constant strength cantilever beam through a linear actuator to subject the constant strength cantilever beam to produce strain; c) through the resistance strain gauge, acquiring the magnitude of the resistance change of the strain gauge; d) through the optical fiber grating demodulation instrument, accessing the peak translation of the reflected light of the Bragg optical fiber grating sensor generated by the strain caused by the constant strength cantilever beam; and e) calculating the relationship between the strain of the cantilever beam and the peak translation of the reflected light of the Bragg optical fiber grating sensor to realize the calibration and wear detection of the Bragg optical fiber grating sensor.

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 discloses a vehicle safety monitoring system based on the internet of vehicles. The vehicle safety monitoring system is characterized by comprising a panorama camera, a temperature sensor, a vibration sensor and a life detection instrument which are arranged on a vehicle and connected with a vehicle body controller, and the vehicle body controller is connected with a wireless communication unit; the wireless communication unit transmits the information of all monitoring terminals to a server arranged on a vehicle manufacturer through a wireless network, and the server communicates with a mobile phone terminal of a user to monitor and control the vehicle. According to the vehicle safety monitoring system based on the internet of the vehicles, the structure is adopted, an existing safety system is integrated, positive wakeup can be conducted when outside invasion of the vehicle occurs or safety hazards in the vehicle exist, corresponding reminding or positive risk avoiding is made actively according to the magnitude of the danger coefficient, and a vehicle owner is reminded through the mobile network; and the vehicle owner can take onsite video or pictures and receive remote control operation of the vehicle.

The invention relates to a mining wireless network communication system based on technology of an internet of things. The mining wireless network communication system comprises an application layer, a transmission layer and a sensing layer. The application layer comprises a voice server, a locating server, a video monitoring management server, a coal mine safety production scheduling server and an emergency command server, wherein the voice server, the locating server, the video monitoring management server, the coal mine safety production scheduling server and the emergency command server are connected with a network center switchboard. The transmission layer comprises a wireless network switching system connected with the network center switchboard. The sensing layer comprises a plurality of intelligent terminals arranged underground or on the ground and connected with the wireless network switching system in the transmission layer in wireless mode. By means of the mining wireless network communication system, real-time precise locating, bi-directional mobile communication and video monitoring of staff are achieved. During an emergency situation, emergency early warning can be conducted, communication can be recovered fast, life detection can be conducted, and miners in distress can be searched and rescued. Simultaneously, wires such as cables and optical fibers are saved, materials and energy are saved, and potential safety hazards are reduced.

The present invention provides a circuit interrupting device which can test the conditions of the components in the circuit interrupting device (i.e., the end-of-life test) through the depression of a test button. The circuit interrupting device also possesses reverse wiring protection, including the ability to cutoff power on the user accessible plugs of the face plate when the device is reverse wired or miswired. The circuit interrupting device contains a test button, a reset button, and a series of circuits (including, but not limited to, a main control circuit, an end-of-life detection circuit, and a reset/trip circuit). A depression of the test button generates a simulated fault, which is detected by the main control circuit. When the components in the main control circuit work properly, a control signal is generated by the main control circuit and transmitted to the end-of-life detection circuit to activate the reset/trip circuit and generated an indication signal. After the indication signal is displayed, the reset button is able to be depressed, which sends a signal to the end-of-life detection circuit, which in turn forwards the signal to the reset/trip circuit to reestablish the electrical continuity of the circuit interrupting device.

A life detector adapted to be used to determine whether an organism or part thereof suits a life condition predefined by a set of ranges, each for a physiological parameter and each characterizing this life condition. The detector comprises a sensor unit adapted to sense at least two of the physiological parameters and to generate signals indicative of their values, a processor for receiving and processing the signals to arrive at these values, the processor further being adapted to disregard any value falling outside the range of the respective parameter and to produce a qualitative diagnosis based on values falling within its range. This diagnosis is indicative of whether the organism or part thereof suits the life condition. The detector further comprises indication means adapted to indicate the diagnosis. The detector may be assembled using a general-purpose programmable communication device, a standard medical sensor and a special cable adapter.

The invention provides a lubricating oil service life detection method and device for an engine. The method includes the steps that after the engine is started, when the rotating speed of the engine is lower than a preset rotating speed, the temperature and pressure of lubricating oil are detected; when the temperature is higher than a preset temperature and the pressure is lower than preset pressure, at least two sets of working condition parameters are obtained, and the working condition parameters comprise the rotating speed of the engine and the pressure and the temperature of the lubricating oil; by means of the measured working condition parameters, the viscosity of the lubricating oil is obtained according to the relations between the viscosity of the lubricating oil and the rotating speed, the temperature and the pressure; and according to the viscosity of the lubricating oil, the service life of the lubricating oil is determined. According to the embodiment, online detection of the service life of the lubricating oil is achieved, a detection result can be obtained in time, and detection time is shortened.

The embodiment of the invention discloses a power battery life detection method and device, and relates to the technical field of a power battery. The method comprises the steps that a dynamic average is obtained according to driving condition data so that the simplified condition data of the driving condition data are obtained; a power battery discharge strategy is confirmed according to the current change data in the simplified conditions; constant current charging is repeatedly performed on the power battery on an electric automobile for multiple times, and discharging is performed according to the power battery discharge strategy; and if the current capacity of the power battery is attenuated to a percentage, which is less than a preset percentage, of the initial rated capacity of the power battery the cycling charge and discharge process, the number of cycles of charge and discharge of the power battery is confirmed and the number of cycles acts as the cycle life of the power battery. Problems of inaccurate detection results and poor experiment effectiveness when the power battery life is detected by a present constant current charge and discharge experiment mode without considering the actual driving conditions can be solved.

The invention discloses air purifying equipment and a life detection method and device for a filter screen in the air purifying equipment. The life detection method comprises the following steps: acquiring the filtering efficiency and the filtering air volume percent of a filter screen, as well as the concentration of a target pollutant in air and the ventilation quantity and the running time of the air purifying equipment; according to the filtering efficiency and the filtering air volume percent of the filter screen, the concentration of the target pollutant in air and the ventilation quantity and the running time of the air purifying equipment, calculating the cumulative purification quantity M of the air purifying equipment; according to the cumulative purification quantity M of the air purifying equipment, calculating the clean air delivery ratio CADR of the air purifying equipment; judging whether CADR is smaller than a preset threshold; and if the CADR is smaller than the presetthreshold, sending prompt information to remind a user of replacing the filter screen. According to the life detection method, the actual service life of the filter screen in the air purifying equipment can be accurately estimated, the using effect of the filter screen is guaranteed, and the market competitiveness of the air purifying equipment is helped to be improved.

The invention discloses a through-wall ultra-wideband radar human body respiration signal detection method based on a Faster-RCNN network. The method comprises the following steps: performing denoising and weak signal enhancement preprocessing on an original slow time-distance two-dimension ultra-wideband radar echo signal; and then continuously performing signal enhancement and denoising on the processed echo by adopting an Advance Normalisation method; imaging the echo signal in the preprocessing process as a gray image by adopting MATLAB, wherein the image width is corresponding to the echoslow time direction, and the image height is corresponding to the echo distance direction; and screening the obtained gray image, annotating a data set, and training a Faster-RCNN network model to perform human body respiration weak signal identification. The method disclosed by the invention is high in identification accuracy rate, high in detection speed, and capable of providing better technical support for the radar echo target detection, the life detection and practical technologies in actual applications.

The invention discloses a multi-target life detection method based on a radar signal and a detection radar. Time accumulation is carried out on a pre-processed echo signal in a slow time direction toacquire a first echo signal. The first echo signal is subjected to inflection point envelope extraction to acquire a second echo signal. The average value of all amplitude signals other than M mark amplitude signals in the second echo signal is acquired. If the ratio of the mark amplitude signals to the average value is greater than a threshold value, a life target is at the radar detection distance corresponding to the mark amplitude signals. According to the life detection method provided by the invention, a normalization method is used to normalize the radar signal amplitude in the fast time (distance) dimension; the problem of energy attenuation caused by the increase of the radar signal with distance in the process of transmission is solved; the missed rate of a far-end target is effectively reduced; and the method of two inflection point envelope extraction is used to improve the multi-target axial recognition accuracy.

The invention provides a mobile terminal, a life detection instrument, a post-disaster search and rescue system and a post-disaster search and rescue method. The mobile terminal can be switched to an emergency control mode by an active and/or passive mode(s) and positioned by the life detection instrument by a three-point or multi-point positioning mode. The method comprises the following steps of: establishing an emergency link connection between the mobile terminal and the life detection instrument and switching the mobile terminal to the emergency control mode; generating a distress signal by the mobile terminal according to a preset rule, spreading a spectrum by using a spectrum spreading code and transmitting the signal to the life detection instrument, wherein the distress signal at least comprises a unique identifier of the mobile terminal; transmitting a positioning control signal to the mobile terminal after the life detection instrument receives the distress signal; transmitting a positioning signal by the mobile terminal; and calculating the position of the mobile terminal according to time delay of the positioning signals received by three or more life detection instruments arranged around the mobile terminal. The embodiment of the invention can also realize accurate positioning to improve the search and rescue efficiency.

The present invention provides a lithium ion battery cycle life detection device and a lithium ion battery cycle life assessment method. The lithium ion battery cycle life detection device comprises two bottom plates and pressure sensors, the two bottom plates are arranged parallelly, and a to-be-detected lithium ion battery is located between the two bottom plates. The pressure sensors are respectively installed on the opposite side surfaces of the bottom plates and the to-be-detected lithium ion battery, and the output ends of the pressure sensors are connected with a signal processor electrically. According to the above lithium ion battery cycle life detection device, the pressure sensors are arranged on the bottom plates, when the charge and discharge cycle tests are carried out on thelithium ion battery, the lithium ion battery expands in the thickness direction, the pressure sensors can reflect the pressure change caused by the lithium ion battery thickness change to the signalprocessor timely, and by a relation schema of the cycle number of times and the capacity attenuation rate and the pressure change, the cycle life of the lithium ion battery can be assessed. The abovedetection results are more accurate, and the assessment method is simpler and is stronger in adaptability.