118results about How to "Accurate sensing" patented technology

A training aid for teaching needle biopsy of the human breast. The inventive methods use breast models having lifelike properties providing accurate tactile sensation during palpation of the breast that enable a trainee to learn to locate modeled internal lesions and similar tissues in the breast. These same properties allow learning of tactile sensations indicating relative position and motion of biopsy needles during biopsy needling procedures. To facilitate tactile learning, the breast model includes an opaque skin that blocks the trainee view of a breast cavity containing modeled lesions, ensuring that needling procedures are performed based solely on "feel". The present invention also includes alternative training methods using a second breast model that is sufficiently transparent to allow viewing of modeled lesions from any relative position. The present invention includes training systems incorporating breast models and viewing stands and methods of training using these aids.

The invention provides an electric heating device, an electric cooking device and a wireless temperature control method. The electric heating device can be used for heating cookware and comprises a wireless receiving device and a controller which are electrically connected and arranged in the electric heating device. The wireless receiving device is used for receiving an input signal corresponding to the temperature in the cookware in a wireless mode, converting the input signal into a temperature signal and transferring the temperature signal to the controller. The controller is used for receiving a temperature signal in the process that the controller controls the electric heating device to conduct heating and adjusting the following heating mode according to actually measured temperature rise time of the temperature signal from a first value to a second value showed , wherein the first value corresponds to first temperature in the cookware, the second value corresponds to second temperature in the cookware, and the second temperature is higher than the first temperature. The electric heating device can achieve the effect that the heating process is accurately controlled according to food quantity, and the problems of dryout and overflowing in the heating process are solved effectively.

The invention discloses a torque sensing system for bottom brackets of bicycles, which comprises a torque sensor, a wireless signal transmitter and a wireless signal receiver, wherein the torque sensor is arranged at a bottom bracket for bicycles, and the wireless signal transmitter and the bottom bracket are relatively fixed; the wireless signal receiver is arranged at a fixed position (near the bottom bracket) of a bicycle body, and the wireless signal transmitter is used for receiving sensing signals transmitted by the torque sensor, and then sending the sensing signals to the wireless signal receiver in a non-contact mode, so that the sensing signals are difficult to attenuate or lose in the process of transmission, therefore, torques provided for a bicycle by a rider can be sensed accurately.

The invention provides a volume adjusting method for a household electrical appliance in an intelligent household and a system. The method mainly comprises the following steps: a noise sensor and a household gateway are set in the intelligent household; the noise sensor transmits sensed noise information to the household gateway through a wireless communication network; the household gateway compares the noise information with a noise threshold value which has been stored in advance; and according to a comparison result, adjusting is carried out on the volume of a program played by the household electrical appliance in the intelligent household. According to the embodiment of the invention, accurate sensing and corresponding control of household internal noises can be guaranteed, and automatic adjusting of the volume of the household electrical appliance can be realized, so that a user can experience real intelligent control in the intelligent household, and the intelligent household system has better populist practicality.

A rotation angle sensing device calculates an average value of calculation values of time necessary for rotation of each one of sections provided by equally dividing one rotation of a crankshaft. The device calculates an average value of the average values of the entire sections to calculate an entire section average value. The device calculates ratios of the average values of the respective sections to the entire section average value. The device eliminates an influence of rotation fluctuation of the crankshaft from the ratios by using reference ratios, which are calculated as ratios of the average values of the respective sections to the entire section average value in the case where there is no structural error. Thus, the device calculates learning values for compensating for the structural error.

The invention provides a terahertz waveband metamaterial sensor, which comprises a dielectric layer and a sub-wavelength metal array metamaterial attached to the dielectric layer. A sub-wavelength metal array unit comprises circular resonance rings and metal strips, each circular resonance ring is provided with four openings identical in size in a skew-symmetric direction, and each metal strip ispositioned in the corresponding resonance ring and translated upwards by 1micron relative to the center of the corresponding resonance ring to form an asymmetric structure in the x direction. By introduction of the asymmetric structures, an EIT-like effect is realized, and a Q value and sensing properties of the sensor are improved. Sensitivity of the sensor is measured by translation quantity, inunit refractive index variation, of sharp transmission peak frequency generated by the EIT-like effect in a transmission spectrum, and high-sensitivity refractive index sensing in a frequency range of 400GHz-900GHz is realized.

A limiting current type oxygen sensor comprises an ion conductor, a pair of electrodes, a gas diffusion mechanism for supplying a diffusion-rate-determined gas, and a heater for heating the ion conductor. The gas diffusion mechanism includes a gas diffusion bore and an internal space communicating with the gas diffusion bore. In a first embodiment, the gas diffusion mechanism is configured such that the thickness (lin) of the internal space is formed equal to or larger than the bore diameter (S1) of the gas diffusion bore. This makes it possible to dominate diffusion-rate-determinateness in the gas diffusion bore and minimize the influence of diffusion-rate-determinateness in the internal space, thereby sensing the limiting current value accurately. In a second embodiment, the gas diffusion mechanism is configured such that an oxygen concentration gradient within the internal space satisfies the following expression: 1/I lim = (1/4FDC o2 ){(l/S) + (l in /S in which is based on a relationship between the Faraday constant (F); a diffusion coefficient (D); an oxygen concentration (C o2 ); a bore area (S) of the gas diffusion bore; a bore length (1) in the axial direction of the gas diffusion bore; a distance (l in ) in the internal space between the first elextrode and the inner surface opposed thereto; an effective cross section (S in ) of the internal space; and an output current value (I lim ).

The invention provides a refrigeration device, comprising: a box body; a door body, which can be opened and closed on the box body; an electromagnet assembly, the electromagnet assembly includes a first electromagnet and a second electromagnet, the first electromagnet is arranged On the box body, the second electromagnet is arranged on the door body, and the first electromagnet is provided with a first contact surface, and the second electromagnet is provided with a second contact surface opposite to the first contact surface; the controller, It is connected with the first electromagnet and the second electromagnet, and is used to control the polarity of the first contact surface and the second contact surface, so as to control the opening and closing state of the door body. In this technical solution, by setting the first electromagnet and the second electromagnet on the box body and the door body respectively, the door body is closed and sucked by using the principle that the contact surfaces of the two electromagnets attract each other when the polarities are different poles. Tightly on the box body, so as to ensure the sealing between the box body and the door body, use the polarity of the contact surface of the two electromagnets to repel each other when they are at the same level, overcome the magnetic force of the door seal, and achieve the purpose of opening the door with resistance.

A washing machine with a liquid additive supply device capable of sensing an amount of liquid additive contained therein. A buoyancy body and a sensing unit are disposed in a reservoir tank of the liquid additive supply device. The vertical position and therefore the distance between the buoyancy body and a sensing unit vary with the surface level of liquid additive in the reservoir tank due to buoyancy effect. The buoyancy body may include a magnetic body and the sensing unit can detect the intensity of the magnetic body. The surface level of the liquid additive is too low, the sensing unit can generate a signal indicative of liquid additive shortage.

The invention discloses a gapped core-type Rogowski coil transformer based on magnetic potentiometer compensation. The gapped core-type Rogowski coil transformer comprises a gapped closed-loop core, a primary coil, a secondary coil, a magnetic potentiometer framework, a magnetic potentiometer coil, an inner-loop-grooved annular shielding box, a first bilateral voltage-regulator tube, a second bilateral voltage-regulator tube, a first operational amplifier, a second operational amplifier, a signal conditioning circuit, a first resistor, a second resistor, a third resistor, an integrating capacitor, a third operational amplifier, an analog-digital converter, a microprocessor and a communication interface. According to the transformer, the sensing error of a gapped core-type Rogowski coil is compensated with a magnetic potentiometer, so that a voltage analog quantity and a digital quantity which are in linear proportional relations with primary current containing harmonic waves can be output. Through adoption of the gapped core-type Rogowski coil transformer, the problems of small output signal and low accuracy in a hollow Rogowski coil are solved; the problem of non-linear errors generated by a core in the gapped core-type Rogowski coil transformer is solved; and accurate sensing of primary current fundamental waves and harmonic components is realized.

The invention provides touch panel test equipment and a detecting device thereof. The test equipment is used for testing the function of a touch panel; the test equipment and the detecting device thereof are used for detecting micro capacitance signals on the touch panel by using a special circuit; and the detecting device can be used for accurately sensing the micro capacitance signals and is not interfered by a peripheral circuit. The test equipment comprises a plurality of sensors, a detecting module and a judging module, wherein the detecting module is used for receiving and processing a plurality of micro capacitance signals to generate a plurality of output signals; the detecting module comprises a plurality of detecting units; and each detecting unit is coupled with a sensor and comprises an input node, a computing unit, at least one compensating unit and at least one electrostatic discharging protection unit.

The invention relates to a light angular sensor, comprising a light proof hemispherical casing enclosed by a hemispherical surface and a round plane. The symmetrical axis position of the hemispherical casing is provided with a light hole, and the inner surface of the hemispherical surface of the hemispherical casing is densely covered with photosensitive elements. The light angular sensor has the advantages of simple structure, low cost and capability of accurately measuring the light angle.

The invention provides a capacitance touch display device including a capacitance touch control panel and a capacitance touch con trol sensor. The capacitance touch control sensor includes a plurality of driving lines, a plurality of sensing lines and a sensing circuit. At a certain time point, the first driving line and the second driving line arranged in alternate permutation are used for inputting first driving voltage and second driving voltage with different phase and voltage. A first node is form by overlapping the first sensing line with the first driving line and does not overlap with the second driving line. The second sensing line overlaps with the second driving line, so that a second node is formed and does not overlap with the first driving line. A first mutually-inducting capacitance and a second mutually-inducting capacitance are formed by coupling the first node with the second node, and a first sensing voltage and a second sensing voltage are formed and are output by the first sensing line and the second sensing line. A sensing voltage value of a sensing circuit is obtained by subtracting the first sensing voltage and the second sensing voltage.

The present invention relates to a sensing circuit used for a non-volatile memory and the non-volatile memory. The sensing circuit is arranged in a page buffer with a latch and senses the data, and the latch saves the data temporarily when writing in or reading out data from a storage unit of the non-volatile memory. The sensing circuit comprises a first switch assembly and a stack gate type control assembly which are connected in series between a first signal line and the first terminal of the latch; a second switch assembly connected between the first switch assembly and the stack gate type control assembly. Before the first switch assembly is conducted to sense by a sensing enabling signal, the voltage of a floating gate of the stack gate type control assembly is set as the voltage value which is the sum of a limit value voltage of the floating gate of the stack gate type control assembly and a specified voltage, and then the data of the storage unit is sensed.

A liquid sensing apparatus includes a liquid sensing chamber 33 having a liquid inlet port that is in communication with an external liquid container in which a liquid is reserved, and a liquid outlet port that is in communication with a <,>liquid consuming apparatus, a movable member 34 movable depending on a liquid level in the liquid sensing chamber 33, a recess portion 33b, 41a for cooperating with a wall surface of the movable member 34 to form a closed space when the movable member 34 is moved to a predetermined position depending the liquid level, and a piezoelectric sensing means 40 for applying a vibration to the recess portion and sensing a state of a free vibration following upon the vibration.

The invention relates to a micro heating disk and a manufacturing method thereof as well as a micro heating disk system. The micro heating disk comprises a substrate, an insulating supporting layer, aresistance heating layer and a temperature sensing unit, wherein the annular temperature sensing unit is arranged at the periphery of the substrate. According to the micro heating disk disclosed by the invention, by the arrangement of the annular temperature sensing unit arranged at the periphery, a contact area of the temperature sensing unit and the environment is enlarged, and the accuracy ofsensed ambient temperature is high; the temperature sensing unit works at room temperature, so that the long-term stability is high; meanwhile, an annular metal layer can effectively shield the influence of external electromagnetic interference on the work of a micro heating disk chip; furthermore, the temperature sensing unit can precisely sense a temperature change of a surrounding environment in real time and automatically transmit the acquired temperature to control heating power of a heating region to stabilize the working temperature of the chip; the micro heating disk is convenient andquick.

The invention discloses a radar personnel monitoring and measuring system and method. The system comprises a millimeter-wave radar which transmits radio waves through an antenna, reflects the radio waves through an obstacle and receives returned reflected waves through the antenna, a signal separation module which is used for separating a plurality of persons from the reflected wave, a DSP which is used for carrying out Fourier transform, fast Fourier transform and smoothing processing on each separated person signal to obtain the number of persons, the position coordinates of each person, thespeed on the position coordinates and the acceleration data on the position coordinates, a 4G wireless module which is used for uploading the number of the persons, the position coordinates of each person, the speed on the position coordinate and the acceleration data on the position coordinate to a network, and a terminal which is used for monitoring the persons in an area in real time accordingto the number of the persons in the network, the position coordinates of each person, the speed on the position coordinate and the acceleration data on the position coordinate. Personnel in an area can be monitored, pre-judgment, prevention and control are performed in advance, and privacy is protected.

The invention discloses a connector and a contactor assembly. The connector is provided with a control circuit, and the control circuit is connected to a coil in a contactor and is used for controlling operations of the contactor; the control circuit includes a work control circuit for supplying work current to the contactor; the work control circuit includes a PWM power saving circuit which is connected to the contactor; when the contactor powers on, the PWM power saving circuit provides a signal with a preset duty ratio to the contactor (20); after the contactor (20) powers on, the PWM power saving circuit maintains that the PWM power saving circuit provides a signal with a small duty ratio to the contactor during the condition of power-on of the contactor (20) to reduce the power consumption. According to the connector and the contactor assembly, the PWM power saving circuit is integrated into the connector, so that the average drive current of the contactor is reduced, and the size of the contactor is reduced.

The spanner of a sensor is used to improve the precision and repeatability of the torsion value measuring. The spanner comprises a body, at least a sensor, and at least a positioning device, with the body having at least a positioning section partially proud of the wall of the body, each sensor having two ends and a body between these two ends which has at least one sensing plate to check the deformation status. The sensor is set on the body, each end setting on each positioning section, and each fastening device being used to combine the body and each sensor.

Disclosed is a washing machine which includes a tub which holds laundry, a drum which is disposed in and rotates within the tub, a stator which is fixed to the tub, and a rotor which is fixed to the drum. The rotor includes a frame, a bushing installed on the frame, a motor shaft having an end which is inserted in and fixed to the bushing, a bearing interposed between the motor shaft and the tub,and at least one guide disposed between the motor shaft and the bushing at an end of the bushing.