329 results about "Capacitive transducer" patented technology

The invention belongs to the field of automobile electric door anti-pinch control, and discloses an electric door proximity type anti-pinch method and system.The method comprises the steps that in the electric door closing process, an electric door controller detects whether an object proximity signal is received or not in real time; the proximity sensor controller judges whether an object approaches or not in real time according to a vehicle door position signal collected by the electric vehicle door controller and a capacitance value of the capacitive sensor, when it is judged that the object approaches, an object approaching signal is output to the electric vehicle door controller, the electric vehicle door controller stops the closing action of the vehicle door driving motor, and the vehicle door driving motor stops the closing action. According to the electric vehicle door anti-pinch control system, through cooperative work of the vehicle door controller and the proximity sensor controller, real-time monitoring and anti-pinch control over the closing process of the electric vehicle door are achieved in combination with the vehicle door position signal and the capacitance value change of the capacitive sensor, the false triggering probability is remarkably reduced, and the reliability of anti-pinch detection is improved.

The invention relates to a capacitive operating unit (1) for a motor vehicle, comprising a capacitive sensor element (30), a switching arrangement (10), and a cover element (20) for hermetically separating the sensor element (30) from the switching arrangement (10), on the visible side (21) of which the switching arrangement (10) is arranged, and on the opposite rear side (23) of which the capacitive sensor element (30) is arranged, wherein the switching arrangement (10) has a coupling electrode (11) coupled to an electric field generated by the sensor element (30), at least one switching element (40), and for each switching element (40) a sensor electrode (12) assigned to a predetermined position (13, 14), which are electrically connected to the coupling electrode (11) via the respective switching element (40) by electrical conductors (15), so that upon actuation of the respective switching element (40) at the respective predetermined position (13,14) a change in the electric field detectable by the sensor element (30) can be effected, wherein the switching arrangement (10) has an electrically non-conductive operating element (50) which can be actuated by the operator and which is designed to act directly on at least one of the switching elements (40) when actuated.

The invention relates to the technical field of flexible electronics, in particular to a method for preparing a dielectric layer of a capacitive sensor, which comprises the following main steps of: preparing an ITO / PET (indium tin oxide / polyethylene terephthalate) electrode; spontaneously forming a flexible dielectric layer; a flexible dielectric layer dispersion process; and packaging the device. The array type flexible pressure sensor prepared by the invention has the advantages of high-sensitivity feedback, stable work, good signal transmission, good flexibility and the like.

The invention discloses a variable-area capacitive sensor displacement measurement method for suppressing interference, and relates to the technical field of precision displacement detection, and the method comprises the steps: S1, obtaining a differential capacitor array through a variable-area capacitive sensor; s2, acquiring a capacitance change signal by using the differential capacitor array; and S3, performing differential processing on the capacitance change signal to obtain a displacement measurement result of the variable-area capacitive sensor. According to the invention, a plurality of groups of differential capacitor pairs are arranged in the same direction, and differential output is carried out after odd-even grouping parallel connection, so that the output signal of the sensor is linearly increased along with the increase of the number of the differential capacitor pairs, and the measurement sensitivity is effectively improved. The structure not only can make quick and accurate response to infinitesimal displacement change, but also can realize higher-precision detection capability on the premise of not obviously increasing system complexity.

An imaging system is provided that includes a video endoscope having a handle and an endoscope. The endoscope includes an image sensor fixedly mounted within the endoscope. The capacitive sensing unit is disposed along an outer surface of the handle. The capacitive sensing unit includes a plurality of capacitive sensors disposed on an outer surface of the handle. The handle includes an electronic controller operable to process actuation of the plurality of capacitive sensors in order to control the camera control function and determine the medical procedure and / or the identity of the user.

The invention relates to the technical field of automotive electronics, and provides a capacitive single-electrode-based steering wheel hand separation detection implementation device which comprises a main control unit, a capacitive sensor and a heating control circuit. Wherein the heating control circuit comprises a steering wheel heating wire, the steering wheel heating wire is reused as an induction electrode of the capacitive sensor, and the main control unit is electrically connected with the heating control circuit and controls the current of the steering wheel heating wire; the main control unit is electrically connected with the capacitive sensor and receives a capacitance change signal of an induction electrode of the capacitive sensor; and judging whether capacitance drift exists or not according to the capacitance change signal at a first moment when the hand-leaving detection is started, adjusting a judgment threshold value of the hand-leaving detection, and turning off the heating control circuit, and at the second moment when the hand-off detection is closed and the heating instruction exists, whether the real-time temperature reaches a preset temperature threshold value or not is judged according to the capacitance change signal, and the heating control circuit is controlled to be switched on to execute heating and turn-off of the hand-off detection.

This application is directed to sensing touch events on a touch sensing panel including a capacitive sensor array. The capacitive sensor array includes a plurality of touch sensing regions and is coupled to a processing device. The processing device identifies, and generates drive signals for, the touch sensing regions of the touch sensing panel. Each drive signal corresponds to a distinct touch sensing region and includes a respective train of periodic pulses. For each drive signal, the respective train of periodic pulses has a respective phase offset with respect to a reference (e.g., a train of periodic pulses of one of the plurality of drive signals, a fixed reference time). While applying the drive signals on the touch sensing regions, the processing device measures capacitance sensing signals from the touch sensing regions. Touch events are detected on the capacitive sensor array based on the capacitance sensing signals.

A vehicle steering system includes a steering operation member configured to receive a steering operation, a capacitive sensor provided in the steering operation member, a controller configured to determine that a driver is gripping the steering operation member in a case where capacitance of the capacitive sensor is equal to or more than a first threshold and determine that the driver is not gripping the steering operation member in a case where the capacitance of the capacitive sensor is less than the first threshold, and a notification device configured to give a notification in a case where the controller determines that the driver is not gripping the steering operation member. The notification device is configured to give the notification in a case where the capacitance of the capacitive sensor decreases after increasing to exceed the first threshold and then remains at the first threshold or more.

A device for measuring a pressure differential comprises a tube, at least one pressure sensor and a processor. The tube comprises a closed insertion portion for insertion into a body, the insertion portion having an insertion end and an internal bore in communication with ambient pressure via an opening in the tube. The sensor is located in or on the insertion portion and comprises an internally facing region in communication with the bore and an externally facing region in communication with an exterior of the tube. The processor is configured to provide a stimulus, which may be an electrical stimulus, to the pressure sensor so that when the stimulus is provided, the pressure sensor provides a measurable response wherein the processor correlates the response with the pressure differential between the exterior of the tube and the bore. The measurable response may be indicative of a change in pressure differential between the exterior of the tube and the bore. There may be a plurality of pressure sensors, in which case at least two of the sensors may have different resonant frequencies at the same pressure differential. The insertion portion may comprise at least one aperture sealed by at least one pressure sensor. The pressure sensor may comprise an electromechanical or micro-electromechanical material and may comprises a piezoelectric and / or electrocapacitive sensor. The externally facing region of the pressure sensor may comprise a coating, which may be electrically insulative.

A read circuit for capacitive sensors such as a MEMS microphones includes a sensor node configured to be coupled to a capacitive sensor to apply a bias voltage to the sensor and sense the capacitance value of the sensor wherein the voltage at the sensor node is indicative of the capacitance value of the capacitive sensor. A switch is provided between the sensor node and the intermediate node. A shock detector coupled to the sensor node and the switch asserts a shock signal to make the switch conductive in response to a shock applied to the capacitive sensor, and de-asserts the shock signal to make the switch non-conductive with a delay after the end of the shock applied to the capacitive sensor.

The utility model discloses a high-density deployment noise monitoring micro-station in the technical field of noise monitoring, which comprises a capacitive sensor, a preamplifier, an ADC (analog to digital converter) circuit, an AGC (automatic gain control) circuit, an MCU (microprogrammed control unit) system and a wireless communication module. The pre-amplifier is used for amplifying an analog signal according to a certain multiple, the ADC circuit is used for the analog-to-digital conversion circuit and converting an analog electric signal into a digital electric signal, the AGC control circuit is used for the automatic gain control circuit, and the MCU system is used for processing, operating and storing received data and controlling an AGC amplification multiple and a communication mode. The wireless communication module is used for transmitting data processed by the micro-station MCU system through a long-distance wireless communication technology or receiving external data, low power consumption and miniaturization of the noise monitoring station are achieved through combination of all aspects, the noise monitoring station can be conveniently installed on any fixable places such as a wall, a trunk and an electric pile, and high-density deployment is achieved.

A capacitance sensor 1A comprises: a decorative layer 21 having a three-dimensional shape; and a wiring assembly 3 joined to the decorative layer 21. The wiring assembly 3 comprises: a molded base member 4 that has a three-dimensional shape and is joined to the decorative layer 21; and a wiring board 5 that has a circuit part 5a in which an electric circuit is formed, and that is stacked onto the molded base member 4 so as to face the inner surface 21b of the decorative layer 21. The circuit part 5a is not joined to the decorative layer 21.

An analyte in a liquid sample is detected using a capacitive sensor having electrodes and a sensor surface, and a signal processor. The sample is dried to reduce its liquid content, and capacitive measurements are made after the drying and preferably also before the drying. The sample may include particles, and the analyte is part of or attached to the particles, and the particles provide a major part of the capacitance change compared to absence of particles. In another example the particles are degenerative and form an integral mass upon application of heat, enhancing the extent of capacitance change.

A haircare device comprising one or more capacitive sensors is described. Each capacitive sensor includes a structure defining a gap of a predetermined size for receiving a volume of hair. A first electrode and a second electrode are arranged on either side of the gap for performing a capacitive measurement on hair received in the gap.

A capacitive sensor device for detecting the presence of a human body part in a detection region of the sensor device is disclosed. The sensor device includes a first sensor electrode with a first electrode section, a second sensor electrode with a second electrode section, and a measuring device for ascertaining a measurement variable, which is based on a current difference between a first current flowing in the first electrode section of the at least one first sensor electrode and a second current flowing in the second electrode section of the second sensor electrode. The measuring device has an electric coil, and the first electrode section of the first sensor electrode and the second electrode section of the second sensor electrode are at least partly arranged relative to each other and relative to the coil in each case and are coupled to the coil.

Methods and devices for detecting a user interaction with an at least one edge of the device are disclosed. The device has a touchscreen with a capacitive sensor and a processor. The method includes acquiring a sequence of input frames from the capacitive sensor, a given input frame comprising information about capacitive readings of the capacitive sensor along an at least one edge of the touchscreen, and continuously detecting the user interaction with the at least one edge of the electronic device using the sequence of input frames.

The utility model discloses an unmanned container truck container detecting and placing device which comprises an unmanned container truck body and eight detecting mechanisms, eight mounting racks are mounted on the unmanned container truck body, and the detecting mechanisms are arranged on the mounting racks. According to the utility model, the area-type plate capacitance type sensor can not be directly contacted with the container, so that the damage to the area-type plate capacitance type sensor caused by impact when the container body is assembled and disassembled is reduced, the service life of the area-type plate capacitance type sensor is prolonged, and the area-variable plate capacitance type sensor is used, so that the precision is high; the weight of each container can be monitored in real time, the running speed can be adjusted according to the total load, the container landing state of the containers can be monitored in real time, the containers which are not normally placed can be found in time, signals are transmitted to a whole vehicle ECU, an alarm is given to the container bodies which are obliquely placed, and the vehicle speed is reduced. And the parking position of the box body which is placed in a deviated mode is adjusted during parking, and follow-up grabbing treatment is facilitated.

A method may include measuring a first side capacitance value from a first side capacitor of an infusion pump, measuring a second side capacitance value from a second side capacitor of the infusion pump, and measuring a central capacitance value from a central capacitor of the infusion pump. The method may include determining a total side capacitance value by totaling the first side capacitance value and the second side capacitance value. The method may also include comparing the total side capacitance value with the central capacitance value. The method may also include detecting the presence of air within a fluid delivery tube coupled to the infusion pump when the central capacitance value is different from the total side capacitance value. Related methods and articles of manufacture, including apparatuses and computer program products, are also disclosed.

The invention relates a capacitive sensor device for determining a distance between a rigid body and another rigid body in a system for contactless linear displacement along a linear displacement path of the rigid body relative to the other rigid body, the capacitive sensor device comprising a capacitive sensor component with a first sensor node mounted to the rigid body and a second sensor node mounted to the other rigid body; a transmission component having at least a first input node for receiving an input signal as well as an output node for providing an output signal representative of the distance; a frequency-dependent input signal generator operatively connected to the first sensor node of the capacitive sensor component and the first input node of the transmission component being operatively connected to the second sensor node of the capacitive sensor component.

An aerosol generation device for consuming an aerosol generation substrate includes a housing and a control unit, the housing having an outer layer having an elastically deformable area, and the control unit including: a printed circuit board having a plurality of electrical transmission lines for electrically connecting components thereon, and a capacitive sensor component arranged on the printed circuit board.

Aspects of the present invention include a system and method for detecting one or more objects detected behind an opaque surface, comprising collecting, by a plurality of sensors of a scanner, sensor data of the one or more objects behind an opaque surface; identifying, by one or more processors of the scanner, characteristics of signal strengths detected by a pair of capacitive sensors using the sensor data, including concurrent behaviors of a first capacitive sensor and a second capacitive sensor in the pair of capacitive sensors; analyzing, by the one or more processors, the characteristics of signal strengths detected to determine different regions of the one or more objects behind the opaque surface; and informing a user, by the one or more processors via a user interface of the scanner, of the different regions of the one or more objects behind the opaque surface.

System (100) comprising the following: a telematics control unit (114) and a control unit (108) connected to the telematics control unit (114) and several capacitive sensors (106), which is configured, to access notification settings (116) to determine a mobile device (118) to notify of a rain situation identified using the sensors (106); to instruct the telematics control unit (114) to send a rain warning to the mobile device (118) to receive confirmation to perform rain situation actions; To close vehicle doors in response to receiving confirmation; and to instruct the telematics control unit (114) to send a closing confirmation (608) indicating the rain situation actions performed to the mobile device (118); a vehicle control unit display (502) wherein the telematics control unit (114) is configured to display a user interface (500) for configuring the notification settings (116) on the vehicle control unit display (502) and to update the notification settings (116) in response to an input into the user interface (500); setting the notification settings (116): (i) which of the vehicle openings are to be closed in response to receiving the confirmation and (ii) which vehicle doors are to be unlocked in response to receiving the confirmation.

The application discloses a variable-area capacitive sensor displacement measurement method for interference suppression and relates to the technical field of precise displacement detection, and comprises the following steps: S1, acquiring a differential capacitance array by using a variable-area capacitive sensor; S2, acquiring a capacitance change signal by using the differential capacitance array; and S3, performing differential processing on the capacitance change signal to acquire a variable-area capacitive sensor displacement measurement result. The application arranges multiple groups of differential capacitance pairs in the same direction, adopts a processing mode of odd-even grouping and parallel connection and then differential output, so that the output signal of the sensor linearly increases with the increase of the number of differential capacitance pairs, and the sensitivity of measurement is effectively improved. The structure can not only quickly and accurately respond to slight displacement changes, but also realize higher-precision detection capability without significantly increasing the complexity of the system.

An electronic module for a metered dose inhaler comprises a housing (10) having a front wall (13) configured to face a rear side (6a) of a housing (6) of the metered dose inhaler (2), a rear wall (16) opposite the front wall (13), and a side wall (17) extending between the front wall (13) and the rear wall (16). An electronics unit (11) is mounted inside the housing (10) and comprises a capacitive proximity device (29) with a capacitive sensor antenna (30). The capacitive sensor antenna (30) is disposed against or near an inner surface of a rear wall (16) and / or a side wall (17) of the housing (10).

The invention discloses a glass drawing process thickness monitoring method and system based on a capacitive sensor, and relates to the technical field of glass manufacturing process monitoring, and the method comprises the steps: obtaining an original capacitance signal, a sensor temperature and a drawing speed through a capacitive sensor array; performing temperature compensation on the original capacitance signal; establishing spatial electric field intensity distribution according to the compensated capacitance value difference and converting the spatial electric field intensity distribution into thickness distribution data; calculating a thickness difference value of adjacent positions and determining an abnormal thickness position; calculating the moving time of reaching the heating area according to the abnormal position coordinates; and determining the power adjustment amplitude according to the thickness difference value, and adjusting the heating power at the corresponding moment. According to the invention, high-precision continuous monitoring and automatic regulation and control in the glass drawing process are realized, and the stability of product quality is improved.

A proximity deciding device includes: a capacitive sensor electrode covered with a cover having a manipulation surface; a measurement circuit that measures capacitance between the capacitive sensor electrode and an indicating body; a proximity deciding unit that makes a decision as to whether a proximity state is in progress according to a difference obtained by subtracting a reference value from the capacitance; and a correcting unit that corrects the reference value. The correcting unit stores, in a storage unit, a lower limit, for accumulated inputs, based on the reference value before the proximity state; calculates, in the proximity state, a cumulative value for a change of the capacitance; updates the reference value according to a cumulative input value (cumulative value or lower limit); and sets the cumulative input value to the cumulative value or lower limit according to whether the cumulative value is larger or smaller than the lower limit.

Disclosed herein are a pump and a method for controlling the pump for detecting a fluid around the pump based on a value detected by a capacitive sensor. The pump may include a motor housing accommodating a motor configured to drive an impeller to discharge fluid. The pump may include a pump cap, located above the motor housing, accommodating a controller configured to drive the motor. The pump may include a sensor box, provided on a side of the pump, accommodating a capacitive sensor. The controller may be configured to drive the motor after determining that a value detected by the capacitive sensor indicates that the fluid is present around the pump.

The invention discloses a skin flap transplantation post-operation blood supply disorder dynamic monitoring device based on an MEMS capacitive sensor and a using method, the device comprises a fitting layer and a sensor layer, the fitting layer is of a three-layer structure, and stable fitting and biocompatibility of the device and a skin flap area are achieved; the sensor layer comprises a signal monitoring module and a signal transmission module, the signal monitoring module forms an array by a plurality of capacitive sensing units, and skin flap tissue swelling is converted into a capacitance signal with position identification through the MEMS parallel plate capacitance principle; after being processed and converted, the capacitance signal is wirelessly transmitted to external equipment through low-power-consumption Bluetooth. And medical personnel judge the blood supply disorder and the occurrence area after the skin flap operation based on the capacitance signal change trend. The device disclosed by the invention integrates miniaturization and integration, can monitor in real time, reduces manpower consumption, provides data support for early intervention of blood supply disorder, and is suitable for post-operation clinical monitoring of skin flap transplantation.

One or more computing devices, systems, and / or methods are provided. In an example, a human machine interface comprises a guard sensor, a human input sensor adjacent the guard sensor, and a controller. The controller is configured to measure a first response of the guard sensor using a first sensing signal having a first frequency, measure a second response of the guard sensor using a second sensing signal having a second frequency, configure a sensor frequency of the human input sensor based on the first response of the guard sensor and the second response of the guard sensor, measure a first response of the human input sensor using the sensor frequency, and identify a touch event on the human input sensor based on the first response of the human input sensor.