288 results about "Capacitance transducer" patented technology

The embodiment of the invention belongs to the household appliance technology, and provides a clothes dryer and a drying control method thereof, and the clothes dryer comprises a box body, a barrel body, a motor, a compressor, a fan, a resistance sensor, a capacitance sensor and a processor; the processor is configured to execute a first drying task, and the first drying task is configured to control the compressor to operate at a first frequency, the fan to operate and the motor to operate; when executing the first drying task, the processor is further configured to control the running duration of the first drying task; when the humidity value is smaller than the first threshold value and the air moisture content is smaller than a second threshold value, a second drying task is executed; the second drying task is configured to control the compressor to operate at a second frequency, the fan to operate and the motor to operate continuously; and when the processor executes the second drying task, the processor is further configured to control the running duration of executing the second drying task. The method and the device can improve the clothes dryness judgment precision, improve the clothes drying quality and reduce the drying energy loss.

An aerosol supply device for receiving an article comprising a first section and a second section. The aerosol supply device includes: a receiving portion configured to receive at least a portion of an article; a capacitance sensor configured to measure a capacitance on a portion of the aerosol supply device receiving the article; and a processor communicatively coupled to the capacitive sensor, the processor configured to determine whether the article has been inserted or removed based on the capacitance measured over a period of time. During insertion and / or removal of the article: when the first segment is adjacent to the capacitive sensor, the capacitive sensor measures a first capacitance value; when the second segment is adjacent to the capacitive sensor, the capacitive sensor measures a second capacitance value, the second capacitance value being different from the first capacitance value, and the processor is configured to determine, using the first capacitance value and the second capacitance value, that the article has been inserted into or removed from the receiving portion.

The invention relates to the technical field of flexible electronic sensors, in particular to a large-strain interdigital capacitive sensor based on liquid metal conductive paste, which comprises a flexible substrate, and the flexible substrate comprises a bottom packaging layer and a top packaging layer integrally connected to the upper surface of the bottom packaging layer. A liquid metal interdigital electrode is embedded between the bottom packaging layer and the top packaging layer, the liquid metal interdigital electrode is formed after liquid metal conductive paste is subjected to laser ablation patterning, the end of the liquid metal interdigital electrode is connected with a flexible wire, and one end of the flexible wire extends to the outside of the flexible substrate; the liquid metal conductive slurry is paste conductive slurry which is rich in oxide and is formed by mechanically stirring and oxidizing liquid metal; the liquid metal is gallium-based liquid metal; the problems that an existing flexible strain sensor cannot meet the large strain measurement requirement and is poor in stability and complex in preparation process are solved.

The invention relates to a pneumatic membrane structure fluid-structure interaction multi-physics field synchronous test method, which relates to the technical field of vibration measurement, and comprises the following steps: conformally embedding a flexible capacitive sensor array in the surface of a pneumatic membrane structure, detecting mechanical vibration, ultrasonic wave, sound wave or infrasonic wave displacement through capacitance value change (electrical characteristics), and measuring the displacement of the flexible capacitive sensor array; and the capacitance value change rate delta C / C and the displacement delta x are in a linear proportional relationship. According to the pneumatic membrane structure fluid-solid coupling multi-physics field synchronous test method, a flexible capacitive sensor array is conformally embedded in the surface of a pneumatic membrane structure, and mechanical vibration, ultrasonic wave, sound wave or infrasonic wave displacement is directly detected by using capacitance value changes; wherein the linear proportional relation between the capacitance value change rate delta C / C and the displacement delta x is directly determined by the electrode distance and the dielectric constant of the capacitive sensor, so that the physical directness of vibration wave measurement is realized, the error caused by indirect calculation depending on a traditional strain gauge or an optical method is avoided, and the vibration wave displacement measurement precision is remarkably improved to + / -0.5% full scale.

This invention is entitled "Continuous Touch Input on Multiple Independent Surfaces." A touch input device is provided with the ability to sense capacitive loads in a two-dimensional array while also being able to sense deflection or movement of the input device at multiple different locations beneath the input plate. The touch input device can be advantageously used in a remote control device and can be used with multiple input buttons or platforms that overlay multiple capacitive touch input areas on a capacitive touch sensor substrate. Movement and positioning of the capacitive loads can be tracked and calculated through output signals from a set of electrodes or other capacitive sensors that have irregular shapes, inconsistent distances from the capacitive loads, and are positioned beneath variable materials and material compositions. Thus, track gestures and taps can be detected using the capacitive sensing device and deflection inputs can be detected using switches or other actuators positioned beneath the capacitive sensing device.

The invention relates to the field of horizontal well logging of high petroleum and natural gas engineering, in particular to a horizontal well output profile imaging logging instrument. The horizontal well output profile imaging logging instrument comprises a shell and supporting structures in groups, the supporting structures are evenly arranged on the shell in the circumferential direction, a detection assembly is arranged on each supporting structure, and each detection assembly comprises a capacitance sensor and / or an electrode sensor. The same sensors on all the supporting structures are arranged in the casing pipe in an annular array coaxial with the casing pipe to form a circular imaging face, equal-diameter imaging is conducted on the circular imaging face, the logging instrument further comprises a data processing module connected with the sensors and a power module used for supplying power, and the testing accuracy is improved.

Techniques are provided for implementing liquid tolerance for a touch device. A sensor array of the touch device is scanned to generate response signals. In response to a response signal exceeding a touch threshold, a signal profile analysis is performed. The signal profile analysis includes sorting the response signals according to ascending order of delta positions to generate sorted signals. An extended vector of the sorted signals is formed. The extended vector of the sorted signals is analyzed using a fitted curve. In response to a feature of the fitted curve satisfying a criteria, the response signal is reported as a touch event. In response to the feature not satisfying the criteria, the response signal is rejected as a false touch.

The utility model relates to a piezoelectric and capacitor composite sensing's car door outer handle, car, including sensing unit, piezoelectric measurement branch, capacitor digital conversion circuit, treater, sensing unit includes piezoelectric film and the upper electrode and lower electrode respectively arranged in the upper and lower two faces of piezoelectric film, the upper electrode is oriented handle and is away from the direction of car body, as the multiplexing electrode of piezoelectric film's signal output electrode and capacitor sensor's sensing electrode, capacitor sensor forms the electric field for sensing the electric field of external object approach and / or contact handle outer surface, piezoelectric measurement branch is coupled respectively upper and lower electrode to obtain the piezoelectric signal of vibration generation, piezoelectric measurement branch is provided with amplifier at least to amplify piezoelectric signal, capacitor digital conversion circuit is coupled upper electrode to obtain self -capacitance and / or mutual capacitance, processing module is coupled piezoelectric measurement branch, capacitor digital conversion circuit respectively.

The application discloses a kind of based on directional shuttle-shaped cavity bimodal flexible capacitive sensor and preparation method thereof, belong to flexible electronic sensor technical field, by dispersing magnetic nanoparticles in low boiling point solvent to form magnetic fluid, emulsification dispersion in hydrogel prepolymer liquid, after rheological control, in turn carry out uniform magnetic field pre-stretching and pulse magnetic field strengthening lengthening, make droplet form shuttle-shaped;Again by half freezing lock shape, vacuum freeze drying removes solvent and makes magnetic nanoparticles deposit in cavity inner wall, completely freeze polymerization makes matrix solidification, finally in situ reduction forms conductive layer and is packaged and is prepared sensor, it has bimodal: when pressure is along the long axis direction of shuttle-shaped cavity, it is first electric capacity change rate, when it is along short axis direction, it is second electric capacity change rate, and second electric capacity change rate is greater than first electric capacity change rate, and pressure direction is identified by single electric capacity pair.The application structure is simple, sensitivity is high, stability is good, is suitable for electronic skin, intelligent prosthesis and man-machine interaction field.

The invention provides a passive capacitive sensor based on light-induced deformation material regulation and control and a preparation method thereof, and the passive capacitive sensor comprises an upper polar plate, a lower polar plate, a dielectric layer located between the two polar plates, and at least one light-induced deformation strip disposed between the upper polar plate and the lower polar plate. Two ends of the photo-induced deformation strip are respectively fixed on the upper polar plate and the lower polar plate, and the photo-induced deformation strip is made of a photo-induced bending deformation material; hollow electrodes are arranged on the surfaces of the upper polar plate and the lower polar plate; when external illumination acts on the light-induced deformation strip, the strip bends and deforms and drives the distance between the upper pole plate and the lower pole plate to change, and passive continuous adjustment of the capacitance value is achieved. Strips are driven to deform through illumination intensity changes so as to adjust the distance between the polar plates in a non-contact mode, and continuous dynamic regulation and control of the capacitance value are achieved.

According to an embodiment of the present invention, an electronic apparatus may comprise: a first antenna; a second antenna; a communication circuit set to transmit and / or receive a signal in the frequency band selected or designated via the first antenna and / or the second antenna; a sensor IC which is electrically connected to the first antenna and the second antenna and measures a capacitance; a first capacitor connected to a first electrical path between the first antenna and the sensor IC; and a second capacitor connected to a second electrical path between the second antenna and the sensor IC. Various other embodiments may be possible.

The invention relates to an intelligent welcome mode control method and system based on capacitive sensor human body recognition, and the method comprises the steps: measuring the electric field disturbance when a human body is close to a vehicle, and determining the height contour of the human body based on the electric field disturbance; calculating the electric field separation degree of each height in the height contour, and determining the hip point position of the human body based on the electric field separation degree; and adjusting the suspension height based on the hip position and the height of the ground. Non-contact physical sign measurement is achieved through a capacitive sensor, then optimal adjusting parameters adapting to the human body are decided, an air suspension serves as an actuator, the vehicle state is adjusted, when a user pulls open a vehicle door, the height of the vehicle is adjusted to the most suitable state, and conversion from'people adapting to the vehicle 'to'the vehicle actively adapting to people' is achieved.

To provide a user-friendly faucet using a capacitance sensor. [Solution] This invention comprises a water outlet, a control unit that switches between water discharge and water stop from the water outlet, an operating unit that controls the flow rate and / or temperature (mixture ratio of hot and cold water) of water discharged from the water outlet, and a capacitance sensor that detects contact with a human body; if, during water discharge, the change in capacitance of the capacitance sensor exceeds a first threshold and remains below a second threshold that is greater than the first threshold for a certain period of time, water is stopped, and if the change in capacitance of the capacitance sensor exceeds the second threshold that is greater than the first threshold, water discharge continues.

The application provides a kind of indoor self-powered door lock state wireless monitoring system, system is by light energy acquisition module, door lock state monitoring module and wireless transceiver module constitute, wherein light energy acquisition module converts indoor weak light energy into electric energy, then electric energy is stored to energy storage unit;Door lock state monitoring module is composed of capacitive sensor and monitoring unit, when door is reversed, lock tongue enters between the two electrodes of capacitive sensor and causes the change of capacitance, monitoring unit converts capacitance into voltage, judges door lock state according to voltage size and sends to wireless transceiver module;Microprocessor receives detection instruction, closes energy supply switch unit, and energy storage unit supplies power to door lock state monitoring module and wireless transceiver module, door lock state monitoring module transmits door lock state to wireless transceiver module, wireless transceiver module sends door lock state and temperature and humidity to host computer, then disconnects energy supply switch unit, and door lock state monitoring module and wireless transceiver module enter sleep mode.

The invention discloses an earphone sound channel configuration method, a headphone, equipment and a storage medium, the disclosed earphone sound channel configuration method is applied to the headphone, the surface of an earmuff shell of the headphone is configured with oppositely arranged holding areas, and each holding area is provided with a capacitive sensor array. The method comprises the following steps: acquiring capacitive sensing values of different holding areas in each earmuff, wherein the capacitive sensing values are generated by a capacitive sensor array based on the contact area between the holding areas and a human hand; determining holding state information of each earmuff according to each capacitive sensing value; and configuring sound channels corresponding to the earmuffs according to the holding state information.

The application provides a capacitive sensing device and a proximity measurement method, which comprises: obtaining capacitive data; determining whether a capacitive sample value in the capacitive data is within a current proximity measurement range; the current proximity measurement range is a measurement range corresponding to a current compensation capacitive value in the capacitive data; if the capacitive sample value is within the current proximity measurement range, determining a current proximity according to the capacitive data; if the capacitive sample value is beyond the current proximity measurement range, adjusting the compensation capacitive value to adjust the proximity measurement range, and determining the current proximity according to the adjusted compensation capacitive information; thereby realizing dynamic adjustment of the proximity measurement range, and measuring a case where a proximity change range is greater than a range of the capacitive sensor, and meeting a test requirement of simultaneously testing far and near proximities.

The invention discloses a measuring circuit and a measuring method for a variable capacitor array, and belongs to the technical field of capacitance measuring circuits, the measuring circuit comprises a controller MCU, a DAC chip, a first logic switch, a capacitance sensor array, a second logic switch, an alternating current amplification circuit and an ADC chip, the controller MCU sends a first alternating current signal through the DAC chip, and the first logic switch sends a second alternating current signal through the ADC chip; a first alternating current signal enters the capacitive sensor array after being switched by the first logic switch, is output to the capacitive sensor array after being switched by the second logic switch, and is converted into a second alternating current signal after passing through the capacitive sensor array. The output second alternating current signal is converted into a voltage signal after passing through the alternating current amplification circuit, the voltage signal is sent back to the controller MCU after being subjected to digital-to-analog conversion through the ADC chip, the controller MCU outputs a measured voltage value, and the capacitance value of the capacitive sensor array is obtained according to the measured voltage value. And through the arrangement of the controller MCU and the logic switch, circuit chips are saved, and the manufacturing cost is reduced.

This invention provides a wireless, passive force-position implantable growth monitoring system and its fabrication method for early-onset scoliosis correction. The system includes: a connected compressible capacitive sensor and a flexible wireless antenna coil; the compressible capacitive sensor is connected to a self-growing early-onset scoliosis correction implant growth rod, and the flexible wireless antenna coil is disposed within the body. The compressible capacitive sensor and the flexible wireless antenna coil together constitute an LCR resonant circuit; the compressible capacitive sensor monitors the pressure changes caused by the elongation of the self-growing early-onset scoliosis correction implant growth rod during tissue or bone growth, thereby causing changes in capacitance and resulting in changes in the resonant frequency of the LCR resonant circuit; the resonant frequency change is detected and read out wirelessly via an external readout device. This system is designed to meet the needs of digital rehabilitation, requires no internal power supply, and has a stable structure, making it suitable for growth monitoring after early-onset scoliosis correction surgery.

A touch positioning method, apparatus, touch device, and storage medium are disclosed. The method is applied to a touch system equipped with an elastic wave sensor and a capacitive sensor. The method includes: calculating touch data based on signals from the sensors, including: calculating elastic wave touch data based on elastic wave signals from the elastic wave sensor; calculating capacitive touch data based on capacitive signals from the capacitive sensor; and locating the final touch point based on at least one of the elastic wave touch data and the capacitive touch data. This method can ensure touch positioning accuracy in various application scenarios and improve the user experience.

The utility model discloses a Bluetooth earphone wearing detection and automatic start-stop device, which comprises a gyroscope detection module for detecting the motion state of an earphone, a human body detection module for preventing the use state of the earphone from being misjudged, and a signal processing module for processing data of the gyroscope detection module and the human body detection module, the control module is used for analyzing the data converted by the signal processing module and controlling the on-off of audio transmission; the human body detection module comprises a capacitive touch sensor chip U1, and a TTP223 model is adopted by the capacitive touch sensor chip U1; according to the utility model, through cooperative work of the human body detection module and the gyroscope detection module, in combination with human body contact signals and motion state data, the wearing state of the earphone and the storage state of the charging cabin can be accurately distinguished. Even if the earphone generates micro motion in the charging cabin, misjudgment cannot be triggered when the capacitive sensor does not detect human body contact, and the problem of false triggering of traditional single gyroscope detection is effectively solved.

An apparatus for use at an inventory location stowing items comprises an array of sensor elements. Each sensor element comprises a plurality of conductive elements that may be driven as a self-capacitance sensor. A set of one or more sensor elements may be associated with a particular lane. Based on the changes in self-capacitance values and the association, the lane a user interacted with may be determined. The determination of the set of sensor elements associated with a particular lane may be determined during a setup process. During operation, the conductive elements may be driven to compensate for changes in the self-capacitance resulting from temperature changes resulting from changes in ambient temperature or the items. Compensated capacitance data may be used to determine interaction data, count of items in the lane, and so forth. Sensor elements at one or both ends of a lane may be used to disambiguate interactions.

The invention provides a wafer height adjusting method of a wafer detection device and a related product. The wafer detection device comprises a workbench, an electronic gun and a capacitance sensor, the relative position of the capacitance sensor and the electronic gun is kept unchanged, the workbench is configured to support and move a wafer, and the capacitance sensor is used for measuring and obtaining the distance between the capacitance sensor and the upper surface of the wafer. The height adjusting method comprises the following steps: confirming that the projection of the capacitive sensor on the plane where the upper surface of the wafer is located is within the range of the wafer; controlling the capacitive sensor to measure the distance; determining a height adjustment value of the wafer according to a measurement result; and adjusting the height of the wafer according to the height adjustment value. According to the invention, the complexity and cost of the wafer detection device can be effectively reduced while the high focusing precision is ensured.

An ostomy pouch can include one or more sensors for measuring one or more indicators. An ostomy wafer can also include one or more sensors for measuring one or more indicators. For example, the sensors can be temperature sensors and / or capacitive sensors, and the indicators can include pouch fill, leakage, skin irritation, and equality of ostomy output.

Capacitive control unit (1) for a motor vehicle with a capacitive sensor element (31) designed as a self-capacitance sensor, which is designed to generate an electric field and to detect a change in the generated electric field, with a switching arrangement (10) which is designed to effect a change in the electric field when actuated by an operator (70), as well as with a cover element (20) having a visible side (21) and a back side (23), wherein the switching arrangement (10) is arranged on the visible side of the cover element (20) and the capacitive sensor element (31) is arranged on the rear or visible side of the cover element (20), wherein the switching arrangement (10) comprises a coupling electrode (11) coupled to the electric field, a sensor electrode (12) and at least two switching elements (40) as well as at least one coupling magnet (26) which is configured to magnetically fix the switching arrangement (10) at a predetermined position on the cover element (20). wherein the coupling electrode (11) is electrically connected to the switching elements (40) and these to the sensor electrode (12), which is capacitively coupled to a counter electrode (32) to stabilize a reference potential, wherein each of the switching elements (40) is assigned a predetermined capacitance (13, 14), so that when the respective switching element (40) is actuated by the coupling electrode (11) a change in the electric field can be effected which depends on the respective assigned capacitance (13, 14) and can be detected by the sensor element (31).

The invention discloses a flexible pressure capacitance sensor and a preparation method and a regeneration method thereof, relates to the technical field of flexible sensors, and discloses a preparation method of the flexible pressure capacitance sensor, which comprises the following steps: adding a conductive filler into a thermoplastic elastomer, and uniformly stirring to obtain polymer slurry; pouring the polymer slurry into a mold, curing, and demolding to obtain a functional layer in which the conductive filler is distributed in a gradient manner in the vertical direction; and combining the at least two functional layers to obtain the flexible pressure capacitance sensor. According to the invention, the recycling and regeneration process of the flexible pressure capacitance sensor is realized.

This invention relates to a constant pressure control system for an optical cavity based on pump-valve coordination and water immersion sensing, and its active protection method. Belonging to the fields of precision instrument control and industrial automation, the system integrates an electronically controlled proportional valve and an air pump through a pump-valve coordinated pressure control unit. It dynamically adjusts the intake and exhaust flow rates based on an adaptive PID algorithm and a coordinated allocation function, achieving high-precision, rapid, bidirectional adjustment of the optical cavity pressure. Simultaneously, it employs a dual environmental sensing unit including visual perception and capacitive liquid level sensing, which executes constant pressure control and active anti-intrusion monitoring in parallel through an intelligent coordinated control unit. When visual detection identifies a risk of water intrusion, the system proactively limits the pump speed; when the capacitive sensor detects liquid water intrusion, it immediately executes an emergency shutdown. This solves the problem of difficulty in coordinating pressure control and safety assurance in traditional technologies, achieving a unified approach of long-term precise constant pressure and active contamination protection, significantly improving the system's reliability, safety, and intelligence level under complex operating conditions.

The invention relates to the technical field of medical monitoring equipment and artificial intelligence crossing, in particular to an intelligent drainage metering early warning device and method based on multi-sensor fusion and an LSTM prediction model. The device comprises a drainage liquid collecting container and a four-dimensional sensor array, wherein the four-dimensional sensor array comprises a weighing sensor, an optical sensor, a capacitive sensor and a micro pressure sensor; according to the electronic drainage meter, various intelligent algorithms are fused, so that the electronic drainage meter realizes high-precision metering, advanced intelligent early warning, self-adaptive clinical adaptation, safe and efficient data transmission and rapid abnormity correction, and the safety and efficiency of postoperative drainage monitoring are remarkably improved.

The invention relates to a capacitive flatness measuring device for an ultra-low resistance silicon wafer and a control method thereof, and belongs to the technical field of semiconductor silicon wafer detection.The capacitive flatness measuring device comprises an objective table, a transplanting table is arranged on the objective table, a rack fixedly connected with the objective table is arranged on the periphery of the transplanting table, the ultra-low resistance silicon wafer is arranged on the transplanting table, and the ultra-low resistance silicon wafer is arranged on the rack. A plurality of capacitive sensors which are arranged in a two-dimensional matrix mode and are parallel to the objective table are arranged above the objective table and on the upper portion of the machine frame, and lifting air cylinders are arranged on the capacitive sensors. And by utilizing the capacitance measurement principle, the influence of the high reflectivity of the ultra-low resistance silicon wafer is completely avoided, and the problem that an optical method fails on such materials is solved. The nonlinear error of the system is eliminated through vertical scanning fitting, and the measurement precision of the flatness of the ultra-low resistance silicon wafer is improved.

The utility model relates to the technical field of seats, in particular to a self-adaptive capacitance sensing system which comprises a seat and capacitance sensors, one or more capacitance sensors are arranged in the seat, and an electrode layer, a first bonding layer, a dielectric layer, a second bonding layer and a grounding electrode layer are sequentially arranged on each capacitance sensor in a stacked mode in the direction from far to near to a human body. A capacitor is formed between the electrode layer and the grounding electrode layer, the area of the grounding electrode layer is larger than that of the electrode layer, and the grounding electrode layer is grounded. Compared with the prior art, the influence of the human body as an electrode on the capacitive sensor is eliminated, detection errors are avoided, the pressure between the human body and the seat is accurately detected, the detection precision is improved, and the corresponding sensitivity is higher.