478 results about "Capacitive transducer" patented technology

Implementations of the present application provide methods for estimating a location of a detected touch input on a capacitive interface. A capacitive image representing capacitive sensor data associated with the detected touch input is obtained, and a touch region of the capacitive image is identified. The touch region corresponds to an area of the capacitive interface associated with the detected touch input. A first set of features of the identified touch region is extracted using a machine learning model. The extracted first set of features is used to determine first coordinates of the location of the touch input.

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 belongs to the technical field of sensors, and particularly discloses a capacitive sensor based on multistage compression deformation and a preparation method thereof, the capacitive sensor comprises an upper electrode layer and a lower electrode layer; a deformable corrugated structure is arranged between the upper electrode layer and the lower electrode layer, and the deformable corrugated structure comprises three deformation areas with the same structure; the deformation area is internally provided with three cavities, and the three cavities are filled with a first dielectric layer, a second dielectric layer and a third dielectric layer respectively; magnetic adsorption units are arranged on the outer sides of the adjacent deformation areas. According to the capacitive sensor based on multi-stage compression deformation and the preparation method thereof, the sensor realizes wide-range and multi-resolution pressure measurement capability; the sensor can present different sensitivity characteristics in different pressure ranges, can flexibly switch working modes, meets various measurement requirements from low pressure to ultrahigh pressure, and solves the technical problem that a traditional capacitive sensor is difficult to consider wide range and high resolution at the same time.

Present disclosure discloses a capacitive sensing ring-sizing system. The capacitive sensing ring-sizing system is an advanced device that revolutionizes the ring sizing experience through its integration of sensor technology, wired rings, and a custom-built electronic system. It provides real-time feedback on ring fit, enabling users to find their perfect size with precision and simplicity. According to an embodiment, the capacitive sensing ring-sizing system uses capacitive sensors embedded in the ring to determine how well the ring fits on a finger. Rather than taking physical measurements of the finger size like circumference or diameter, the capacitive sensing ring-sizing system uses changes in capacitance caused by the interaction between the ring, the finger, and the skin's dielectric properties.

A hearing instrument has a housing to be worn in a designated wearing position behind the ear, an earpiece to be inserted into the auditory canal of a user, and a flexible connector that connects the earpiece to the housing. The hearing instrument further includes an output transducer for converting an output audio signal into a sound signal to be output to the user and a capacitive sensor with a control and evaluation circuit and two sensor electrodes electrically connected thereto. One of the sensor electrodes is arranged in the housing, while the other sensor electrode is arranged in the connector and / or in the earpiece.

A smart object may be used to monitor physiological parameters of a user. The object has at least one capacitive sensor to sense a change in capacitance when a tissue of the user comes into contact with the at least one capacitive sensor. The change in capacitance can be used to detect physiological parameters of a user such as heart rate, inter-beat interval and respiratory rate. The smart object may also be used with another smart object to determine the identity of the user or other physiological parameters of the user such as blood pressure.

One aspect of the invention relates to a domestic appliance operating device (5) having a ring as operating element (6), which ring comprises a fixed support ring (17) on which a separate operating ring unit (18) of the ring is rotatably mounted, wherein the operating ring unit (18) peripherally surrounds the support ring (17), wherein, on an outer side (19a, 19b), the operating ring unit (18) is formed at least in areas as an electrode of a capacitive sensor (S) of the domestic appliance operating device (5).

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 device includes a sensor circuit configured for installation in a stringed instrument such that the sensor circuit is electrically distinct from a pickup circuit of the stringed instrument, the pickup circuit including a pickup disposed proximate a string of the stringed instrument and configured to produce an audio signal of the stringed instrument in response to a movement of the string, and the string, the sensor circuit including a capacitive sensor and a sensor processing circuit in electronic communication with the capacitive sensor configured to produce a data signal based on a state of the capacitive sensor.

The invention relates to a portable device. The portable device comprises an integrated circuit and a touch display panel. The integrated circuit includes a first receiver pin, a first transmitter pin, a second receiver pin, and a second transmitter pin. The touch display panel comprises a capacitive sensor array. A first line in the first set of lines is coupled to the leftmost transmission sensor assembly of the capacitive sensor array, and is located at a position closest to the capacitive sensor array in the top and the vertical side, and at a position farthest from the capacitive sensor array in the bottom. A second line in the first group of lines is coupled to the rightmost transmission sensor assembly of the capacitive sensor array, and is located at a position farthest from the capacitive sensor array in the top and the vertical side, and at a position closest to the capacitive sensor array in the bottom.

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.

An operating device for a hob comprises a control and a capacitive touchscreen for operation by placing a finger on it, which has a display, a user interface, and capacitive sensor elements distributed across the surface below. The operating device comprises an operating element that is movable and removable on the user interface and is designed in two parts with a lower part and an upper part that can be rotated relative to one another about a vertical axis of rotation. The operating element comprises sensor means for detecting rotation between the lower part and the upper part and a radio device for wirelessly transmitting signals to a counter radio device of the operating device. The radio device transmits information for detecting the rotation to the control of the operating device via the counter radio device.The control of the operating device is designed to detect the position of the operating element on the user interface by means of capacitive sensors and to adapt a display around the operating element accordingly and to trigger operating commands.

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.

A hearing instrument (4) is specified with a housing (8) worn in a designated wearing position behind the ear or in the ear, wherein a battery (20), a wireless communication device (22), and a capacitive sensor (28) are arranged in the housing (8). The wireless communication device (22) comprises an antenna (24) and a transmitting and receiving unit (26) electrically connected thereto. The capacitive sensor (28) comprises at least one sensor electrode (32, 32a, 32b, 34, 34a, 34b) and a control and evaluation circuit (30) electrically connected thereto. The battery (20) and / or the antenna (24) or at least a section (48, 50) of the antenna (24) are used as sensor electrodes (32, 32a, 32b, 34, 34a, 34b) of the capacitive sensor (28).

A method is provided for improving the EMC robustness of Integrated Capacitive Sensor systems with a sensor Signal-Conditioner (SSC). The SSC is connected with a capacitive integrating converter to convert a received signal into a bit stream. An oscillator provides a plurality of sampling frequencies. A counter connected with the capacitive integrating converter collects the bit stream and calculates the digital representative of the physical input which is than stored in an output register. The method includes performing some conversions with different sampling frequencies from the oscillator or a frequency divider by the capacitive integrating Signal-Converter; storing the results of the samplings and using the results in the following cycle to calculate for each sampling frequency a difference to the prior sampling of the same frequency; and calculating the digital representative of the input signal from the external sensing capacitor as the reverse weighted average of the samplings of the different frequencies.

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 to a method for detecting the presence of a hand (1) in a gripping region of a steering wheel (2) by means of a capacitive sensor system, the presence of the human hand (1) in the detection region of the sensor arrangement comprising at least one sensor electrode (4) connected to the first input / output (3.1) of the sensor electronics (3) results in a change in the capacitive coupling (CHand) of the sensor electrode (4) to a reference potential, and wherein the metal core (5) of the steering wheel is connected to the ground potential (GND), characterized in that the sensor arrangement (1) comprises at least one sensor electrode (4) connected to the first input / output (3.1) of the sensor electronics (3). A diagnosis of the connection of the steering wheel core (5) to the ground potential (GND) is carried out during operation in that at least one first contact point (5.1) of the steering wheel core (5) is connected to a second input (3.2) of the sensor electronics (3), which second input carries out a continuous monitoring of the applied potential.