24 results about "Contactless sensor" patented technology

We provide an anomaly detection system capable of detecting abnormalities in humans. [Solution] An anomaly detection system comprising: a first motion detection unit 301 that detects movements of a person 20 that are greater than a motion threshold using a non-contact sensor 10; a presence location determination unit 302 that, if it has detected movements greater than the motion threshold, determines whether a person is present in a location 30 where the non-contact sensor 10 can detect movements of a person 20 that are less than the motion threshold; a second motion detection unit 303 that detects movements of a person 20 that are less than the motion threshold if it has determined that a person is present in a location 30 where it can detect movements of a person 20 that are less than the motion threshold; and an anomaly determination unit 304 that, if it has not detected movements less than the motion threshold, determines that something is wrong with the person 20.

An example method for determining cognitive load is described herein. The method includes receiving a cardiac signal measured by a non-contact sensor; determining a heart rate variability (HRV) metric based on the cardiac signal; and determining a cognitive load of a subject based on the HRV metric. An example system for determining cognitive load is also described herein. The system includes a non-contact sensor; a computing device operably coupled to non-contact sensor, the computing device including a processor and a memory, the memory having instructions thereon, that, when executed, cause the processor to: receive a cardiac signal measured by a non-contact sensor; determine a heart rate variability (HRV) metric based on the cardiac signal; and determine a cognitive load of a subject based on the HRV metric.

A system, and the like, capable of improving user-friendliness when a work machine is diagnosed in a form intended by a user using a terminal device having a wireless communication function, are provided. A second external request signal based on a designated attribute regarding a designated work machine 200 designated through a terminal input interface 101 and a unique identifier read in non-contact manner from a designated component 222 with a non-contact sensor mounted on a terminal device 100 is transmitted to a real machine communication station 210 mounted on the designated work machine 200. Then, a second external response signal representing information regarding the designated component 222 in response to the second external request signal is transmitted from the real machine communication station 210 to the terminal device 100, and the information that is a diagnostic result of the designated component is output to a terminal output interface 102.

The application provides a paper pulp bag feeding system, which comprises a conveying device, a non-contact sensor and a control device; the conveying device comprises a conveying support and a conveying belt, the conveying belt is connected with the conveying support, the conveying belt is arranged adjacent to the conveying support, the conveying belt can move under the driving of an external driving device, and then the paper pulp bag placed on the surface of the conveying belt is conveyed, the non-contact sensor is fixedly arranged on the conveying support and is electrically connected with the control device, and the non-contact sensor is used for detecting the paper pulp bag conveyed by the conveying belt and transmitting a detection signal to the control device. The paper pulp bag feeding system provided by the application utilizes the non-contact sensor to detect the paper pulp bag conveyed by the conveying belt, has the characteristics of simple structure, high reliability and long service life, can reduce the control stop caused by the damage of the detection switch, and greatly improves the running efficiency of the conveying line.

This invention proposes an optimized control method and system for the correction mechanism of a circular cutter machine. The method includes: Step 1: Establishing a mechanistic simulation model describing the correction mechanism of the circular cutter machine; inputting a preset low-frequency sinusoidal sweep excitation signal into the correction mechanism; synchronously acquiring lateral offset response data; and determining the unknown dynamic parameters in the mechanistic differential equation through a frequency domain identification algorithm; Step 2: Real-time acquisition of the lateral position offset and linear velocity of the roll material using non-contact sensors at a fixed sampling period T; Step 3: At each sampling moment, using the mechanistic simulation model constructed in Step 1 as a prediction model, and with the currently measured lateral position offset and linear velocity of the roll material as the initial state, constructing a quadratic programming objective function, and solving the correction roller swing angle sequence through online rolling optimization. This method and corresponding system reduce the scrap rate caused by over-correction or under-correction, thereby significantly improving production efficiency.

Systems and methods are directed to a leak detection system that incorporates non-contact sensors to detect leaks. The leak detection system may include local power supplies that may provide operational power to the non-contact sensors when remaining components, such as those associated with racks or electronic systems, are shipped, stored, or otherwise not provided with an external power supply. Low-powered non-contact sensors may particularly target small viewing areas for leak detection.

This invention discloses a non-contact abnormal event alerting method and system based on rhythm-morphology co-modeling of cardiac impact signals. The method includes: acquiring cardiac impact signals from the tested object using a non-contact sensor; constructing rhythmic signal segments based on the cardiac impact signals, and constructing corresponding morphological signal segments using the rhythmic signal segments as basic units, assigning both to the same unique identifier; extracting rhythmic and morphological features using a dual-branch feature extraction module; performing homologous pairing of the rhythmic and morphological features based on the unique identifier, splicing them to form joint features, and generating channel weights based on channel responses to obtain weighted fusion features; inputting the weighted fusion features into a discriminant model, and outputting cardiac impact signal abnormal event alert information. This invention can improve the accuracy and robustness of non-contact BCG signal abnormal event alerting.

This application relates to a hygienic clamp with a non-contact sensor. The clamp may also include a first clamp arm, a second clamp arm, and a hinge to movably join the first clamp arm and the second clamp arm. The non-contact sensor can sense whether the clamp is closed by detecting the proximity of one arm of the clamp to its other arm, without requiring the two arms to contact one another. Since the non-contact sensor is not mechanical, no mechanical wear is produced. It is constructed to prevent build-up that can occur with other types of sensors in industries that use clamps in their applications.

This printer 10 comprises: a placement table 20 on which a medium 5 is placed; a recording head 40 provided above the placement table 20; a first moving device 25Z that moves the placement table 20 in a vertical direction Z; a non-contact sensor 70 that detects, without physical contact, the position in the vertical direction Z of a medium 5 placed on the placement table 20; a contact sensor 80 that is provided with a contact part 81, which comes into contact with the medium 5, and that detects the position in the vertical direction Z of the medium 5 by detecting the contact of the medium 5 with the contact part 81; and a control device 100. The control device 100 raises the placement table 20 until the medium 5 reaches a lower control position Pl set below the contact part 81 on the basis of the detection of the non-contact sensor 70, and then raises the placement table 20 until the medium 5 comes into contact with the contact part 81 on the basis of the detection of the contact sensor 80.

The present application relates to the technical field of power system fault detection, and particularly relates to a low-voltage cable electric leakage fault point positioning method and system, electronic equipment and medium; the method comprises: in response to a trigger signal of an electric leakage fault, acquiring fault line section information of the electric leakage; injecting a target current signal into a fault cable corresponding to the fault line section information; after injecting the target current signal into the fault cable, using a non-contact sensor to collect a magnetic field signal along a path direction of the fault cable, and converting the magnetic field signal into an electric signal; determining the position of the low-voltage cable electric leakage fault point according to a signal strength mutation point of the electric signal. In this way, the technical problem of insufficient non-contact measurement accuracy in the existing electric leakage fault positioning technology is solved, and the accuracy, safety and efficiency of fault positioning in complex environments, especially in the dark cable laying scene, are improved.

Systems are provided for a transformer of an electric machine. In one example, an externally excited electric machine includes a non-contact sensor that is mounted on a stationary ferromagnetic core of a transformer and a solenoid coil coupled to a rotating ferromagnetic core of the transformer. The sensor is a stationary sensor.

We provide an anomaly detection system capable of detecting abnormalities in humans. [Solution] An anomaly detection system comprising: a motion detection unit 701 that detects movements of a person 20 that exceed a motion threshold using a non-contact sensor 10 provided in the first room 140; a power usage time determination unit 703 that determines the power usage time of the second room 240 if it is not possible to detect movements of the person 20 that exceed the motion threshold; and an anomaly determination unit 704 that determines that an anomaly has occurred in the person 20 if the power usage time of the second room 240 is longer than a predetermined time.

The application relates to a compliance non-intrusive industrial control firmware over-extraction method. The method comprises the following steps: collecting physical signals of an industrial control device in operation through a non-contact sensor, analyzing and positioning a triggering time of a firmware protection mechanism in combination with a compliance constraint model, wherein the compliance constraint model comprises a fault injection power constraint, a firmware extraction time length constraint and an electromagnetic interference intensity constraint; according to the positioned protection mechanism triggering time, injecting a fault signal into the industrial control device to interfere with the operation of the protection mechanism, so as to realize bypassing of the protection mechanism; establishing communication with a storage chip of the industrial control device through a non-contact interface, and reading firmware binary data in the storage chip; and processing the firmware binary data to obtain firmware data that can be used for security evaluation. The non-contact collection and communication realize non-damage extraction of the device, the compliance constraint model guarantees industrial environment adaptability, and precise protection bypassing and efficient data processing improve extraction efficiency and compatibility.

Implementations are disclosed for automatic commissioning, configuring, calibrating, and / or coordinating sensor-equipped modular edge computing devices that are mountable on agricultural vehicles. In various implementations, neighbor modular edge computing device(s) that are mounted on a vehicle nearest a given modular edge computing device may be detected based on sensor signal(s) generated by contactless sensor(s) of the given modular edge computing device. Based on the detected neighbor modular edge computing device(s), an ordinal position of the given modular edge computing device may be determined relative to a plurality of modular edge computing devices mounted on the agricultural vehicle. Based on the sensor signal(s), distance(s) to the neighbor modular edge computing device(s) may be determined. Extrinsic parameters of the given modular edge computing device may be determined based on the ordinal position of the given modular edge computing device and the distance(s).

The present invention provides an expansion unit and an image forming apparatus that allow functional units, which are located in front of or behind the control unit, to be attached to the control unit without increasing the size of the control unit itself. [Solution] The non-contact sensor unit 60, which is an extension unit attached to the operation panel 50, which is the operating section of the main body of the device, comprises a first intermediate member 62, which is a first member attached to the left side of the operation panel 50, and a second intermediate member 63, which is a second member attached to the right side of the operation panel 50. The non-contact sensor unit 6 is attached to the first intermediate member 62 and the second intermediate member 63, is positioned on the rear side of the operation panel, and includes a non-contact sensor 61 as a functional unit that extends the functionality of the operation panel 50.

A steering apparatus including a steering wheel and a non-contact sensor part provided on a hub portion or spoke portion to detect a grip operation of a rim portion by an occupant. The rim portion includes an upper and lower horizontal rim portions extending substantially horizontally, and a pair of left and right vertical rim portions connecting left and right end portions of the upper and lower horizontal rim portions, and the vertical rim portion includes a first vertical rim portion below the spoke portion and a second vertical rim portion above the spoke portion. The second vertical rim portion extends in a substantially vertical direction from the spoke portion to the upper horizontal rim portion, and an angle of the second vertical rim portion with respect to a horizontal line is equal to or larger than a predetermined angle.

The application discloses a floating wind turbine state monitoring method based on visual vibration measurement, and comprises the following steps: determining the visual camera layout position and quantity according to the floating wind turbine monitoring requirement, shooting the operation state of the floating wind turbine, pre-processing the original video, and outputting the pre-processed video signal; solving the motion displacement of each pixel point of each frame of the output video signal, and obtaining the full-field motion information; and realizing the accurate calculation of the floating platform motion and the tower vibration through the joint solving of multiple points in space. The application greatly improves the spatial resolution of the sensor monitoring, can realize full-field measurement, reduces the number of sensor arrangements, and simplifies the arrangement process and reduces the cost, because the visual camera serves as a non-contact sensor and does not produce additional mass load effect. The application can realize the synchronous measurement of the surge, heave, pitch of the floating wind turbine and the tower vibration, and provides an effective measurement means for the health state evaluation, fault diagnosis and operation and maintenance of the floating wind turbine.

The present application relates to the field of medical system, especially to a kind of non-contact vital signs intelligent monitoring system and monitoring method.The system includes: non-contact sensor, gathers the original micro-motion signal caused by breathing heartbeat;Edge computing processing module, deployed in local ward, after the pre-processing of original signal, separate out breathing and heart rate waveform, calculate the breathing frequency and heart rate value, and compare with preset threshold to generate judgment result;Central monitoring display module, deployed in nurse station or cloud, receive judgment result and display state identifier, trigger alarm and push to mobile terminal when abnormal.The present application realizes non-contact, continuous automatic monitoring, solves the problem that existing monitoring mode intrudes patient, cannot continuous monitoring, early warning is not timely.

A fluid level measuring device (100) is disclosed. The fluid level measuring device (100) comprises a plurality of magnetic floats (102) disposed in vertical sections of a container (101), a plurality of contactless sensors (104) being disposed at predetermined levels of the container (101), and a level measuring circuitry (107) electrically connected to the plurality of contactless sensors (104) for generating a level signal from the electrical output signal of each of the contactless sensors (104). Each of the contactless sensors (104) is configured to generate an electrical output signal in response to a change in magnetic flux density, the magnetic flux being generated by a magnetic float (102).

This invention provides an automatic drainage device for compressed air storage tanks, comprising a tank body, an inlet pipe and an outlet pipe fixedly connected to the outer peripheral wall of the tank body, a drain pipe fixedly connected to the bottom of the tank body, a water collection container fixedly connected to the bottom of the drain pipe, and a water outlet pipe fixedly connected to the bottom of the water collection container. A solenoid valve and a steam trap are connected in series on the water outlet pipe. In this invention, a water collection container for storing condensate is located at the bottom of the tank body, a non-contact sensor is installed at the top of the water collection container, and a solenoid valve and a steam trap are connected in series at the bottom of the water collection container via the water outlet pipe. A PLC controller electrically connected to the solenoid valve and the non-contact liquid level sensor is also provided, enabling the liquid in the water collection container to control the opening and closing of the solenoid valve to drain according to the set liquid level height. This provides automatic drainage control and significantly reduces the failure rate of pneumatic instruments.

The application relates to the technical field of biological pharmacy, and provides a biological agent quantitative dispensing device and a dispensing method.The biological agent quantitative dispensing device comprises a storage container, a dispensing container, a first non-contact sensor and a second non-contact sensor, the inside of the storage container is used for storing biological agents, the liquid inlet of the dispensing container is communicated with the liquid outlet of the storage container through a conveying pipe, the first non-contact sensor and the second non-contact sensor are arranged on the conveying pipe between the liquid inlet of the dispensing container and the liquid outlet of the storage container, and a preset distance is arranged between the first non-contact sensor and the second non-contact sensor.The non-contact sensor arranged on the conveying pipe between the liquid inlet of the dispensing container and the liquid outlet of the storage container can realize non-contact quantitative dispensing of the biological agents, and can effectively improve the dispensing efficiency and the dispensing precision of the biological agents.

Power tool (10, 510, 710) comprising: a housing; a trigger (520) arranged on the outside of the housing, the trigger comprising a magnet (516); a motor (308) inside the housing, the motor being configured to generate a rotary output for a drive mechanism; the drive mechanism comprising a driver blade (26) for driving a fastener into a workpiece; a Hall effect sensor (524) being configured to detect a position of the trigger (520) based on the proximity of the magnet (516) to the Hall effect sensor (524); the trigger (520) being configured to pivot relative to the Hall effect sensor (524);and an electronic control unit (304) connected to the Hall effect sensor (524), the electronic control unit (304) being configured to: determine the position of the drive blade (26) and to determine the position of the trigger (520) based on a signal from the Hall effect sensor (524) when it is determined that the drive blade (26) is in a ready position, and to control the drive mechanism depending on the position of the trigger (520).

A road surface friction coefficient calculating device according to one aspect of the present disclosure is capable of determining a road surface condition corresponding to a distance in front of a vehicle on the basis of a sensor table in which the types of sensors to be used for calculation depending on the distance in front of the vehicle are defined, road surface feature data in front of the vehicle obtained from a plurality of types of non-contact sensors provided in the vehicle, and road surface temperature data in front of the vehicle obtained from a temperature sensor provided in the vehicle. The road surface friction coefficient calculating device is further capable of reading out friction coefficient data corresponding to the road surface condition obtained by the determination from a friction coefficient table, and outputting the read friction coefficient data corresponding to the distance in front of the vehicle or first friction coefficient data corresponding to the distance in front of the vehicle obtained by performing a predetermined calculation on the read friction coefficient data.