460results about How to "Sensitivity adjustable" patented technology

The sensitivity of a motion sensor or detector in a security system is adjusted by a remotely-transmitted signal, such as from a user interface device in the security system. In another approach, a pet wears a transmitter on its collar that transmits a wireless signal to command the motion sensor to adjust its sensitivity, e.g., by entering a pet immune mode, when the pet is in the room that is protected by the motion sensor. In another approach, a remote monitoring site sends instructions to the motion sensor via a communication interface. The sensitivity can be adjusted by adjusting a pulse count, optical gain, or electrical or optical sensitivity of the motion sensor.

A photosensor and a display unit are fabricated on the same substrate. Input coordinates are identified by comparing the light quantities at positions (pixels) which is and is not touched by a finger or the like by use of a comparison circuit. Thus, TFTs to form the photosensor can be fabricated on the same substrate in the same process, and also reductions in manufacturing cost and the number of parts can be realized. A region required for disposing a sensor in the circumference becomes unnecessary, thus realizing the miniaturization of the device. Moreover, since a region to be a blind spot is eliminated in the display unit, it is possible to utilize the display unit effectively. It is possible to improve the precision of an input recognition and to uniformly perform detection all over the display unit. Furthermore, since the photosensor is constituted of a photoreceptor circuit which is capable of adjusting the sensitivity of receiving light, it is possible to make the sensitivity of receiving light (detection) uniform in the display unit.

A magnetic field sensing device for determining the strength of a magnetic field, includes four magnetic tunnel junction elements or element arrays (100) configured as a bridge (200). A current source is coupled to a current line (116) disposed near each of the four magnetic tunnel junction elements (100) for selectively supplying temporally spaced first and second currents. Sampling circuitry (412, 414) coupled to the current source samples the bridge output during the first and second currents and determines the value of the magnetic field from the difference of the first and second values. A method for sensing the magnetic field includes supplying a first current to the current line (116), supplying a second current the current line (116), sampling the value at the output for each of the first and second currents, determining the difference between the sampled values during each of the first and second currents, and determining a measured magnetic field based on the determined difference.

The invention discloses a dielectric-varied capacitive flexible three-dimensional force tactile sensor. The dielectric-varied capacitive flexible three-dimensional force tactile sensor is characterized in that a flexible printed circuit board is arranged, wherein a square common electrode and four identical rectangular induction electrodes which are located on the periphery of the edges of the common electrode in an equidistant mode are printed on the printed circuit board; the induction electrodes are in two-to-two symmetry with the center of the common electrode serving as the symmetry point; a composite multi-dielectric layer is fixed to the flexible printed circuit board; the composite multi-dielectric layer is formed by an inversely-concave PDMS dielectric layer and an air dielectric layer located in a groove of the PDMS dielectric layer; the composite multi-dielectric layer is buckled on the upper portion of the flexible printed circuit board, and the common electrode and the four induction electrodes are located in the air dielectric layer; a PDMS hemispheric contactor is arranged on the composite multi-dielectric layer. According to the dielectric-varied capacitive flexible three-dimensional force tactile sensor, the common electrode and the induction electrodes are located on the same plane; compared with a traditional capacitive tactile sensor of an up-down electrode structure, the dielectric-varied capacitive flexible three-dimensional force tactile sensor has the advantages of being simple in manufacturing process and capable of being easily arrayed.

A hydraulic brake lever for a bicycle, comprising a main body, a pull handle, and an adjusting mechanism. Thus, the hydraulic brake lever can be operated conveniently and smoothly, thereby facilitating the rider operating the hydraulic brake lever. In addition, the hydraulic brake lever is sensitive, thereby protecting the rider's safety. Further, the operation stroke of the brake can be changed and adjusted conveniently, so as to adjust the sensitivity of the brake to the optimum state.

A security system for use on a motor vehicle having a manufacturer's electrical ignition system, wherein the security system comprises electronic means for controlling the security system; a sensing means for sensing tampering; at least one warning means; at least one immobilizing means, wherein the electronic means receives electronic sensor signals from the sensing means and sends electronic activation signals to the warning means and to the immobilizing means; potting means disposed upon the electronic means for excluding moisture, heat and vibration from the electronic means; and a remote-control means for remotely controlling the security system, which remote-control means is resistant to scanning-type interference, and wherein the remote-control means further comprises: a receiving means for receiving radio control signals, and a transmitting means for transmitting a multiplicity of radio control signals, wherein said transmitting means further comprises at least: signals for changing the sensitivity of the sensing means, signals for activating and deactivating the electronic means, and signals for immediate activation of the warning means. The security system wherein the connective means comprises conductive wire with a layer of insulation disposed thereon wherein the insulation is black. The security system wherein the connective means is manufactured to fit the manufacturer's original factory wiring system.

Provided is a liquid crystal panel equipped with a touch sensor function that can detect pressing force. Multiple displacement detection units (30) are provided between a pair of substrates (31, 32) arranged opposing each other and output a signal due to displacement of one of the substrates. A displacement point detection unit (3) binarily detects whether the one substrate has become displaced at each position of the displacement detection units (30) based on the signals output from the displacement detection units (30). A coordinate detection unit (4) detects the coordinates of, among the displacement detection units (30), the displacement detection units for which the displacement point detection unit (3) detected that the one substrate became displaced, and outputs pressing force position information. A displacement point counting unit (5) counts the number of displacement detection units for which the displacement point detection unit (3) detected that displacement occurred among the displacement detection units (30), and a pressing force deriving unit (6) outputs information regarding a pressing force intensity based on the number of displacement detection units counted by the displacement point counting unit (5).

The invention discloses a quasi-close loop starting method of a brushless direct current motor free of a position sensor, namely a quasi-close loop three-stage starting method with rotor initial position accurate pre-positioning and optimization positioning in the acceleration process combined. Short-time pulse voltage vectors are exerted in a motor winding, the rotor position can be locked in a range within 60-degree electrical angles by detecting direct-current bus current, and rotor accurate pre-positioning is completed by electrifying a designated winding, detecting current and comparing the current on the basis of rotor position locking. After rotor position pre-positioning, rotors enter the optimization positioning and acceleration stage, current differentials serve as the phase change conditions in the threshold range so that the rotors are ensured to change phase accurately in the acceleration process, and a system is switched into a counter electromotive force operation state. Experimental results show that the quasi-close loop three-stage starting method is low in cost and high in reliability, and can ensure that the system is in the quasi-close loop working state in the whole starting process and cannot have step-out and starting failure.

An intrusion sensing device includes an intrusion detection sensor enclosed within a housing and operable to detect an intrusion into a container. A mounting detection mechanism contacts the surface of the container when the housing is mounted thereto and is operable to detect when the housing is not in contact with the surface of the container. An access detection mechanism is operably connected to an access panel of the housing and operable to detect removal of the access panel from the housing. A control module is operable in a setup mode and an active mode. The control module is adapted to receive an alarm message from the intrusion detection sensor and operable to initiate an alarm event during the setup mode which varies from an alarm event initiated during the active mode. A wireless transmitter is operable to transmit an alarm indication signal to a remote monitoring system.

An electronic device and method are disclosed that relate to the selection of a control algorithm for optimizing the performance of a device that is controlled by a user initiated touching of the device that creates a capacitive coupling. The device and method entail the use of a motion sensor to gather data related to the movement of the device, a means for analyzing the data to select an optimal control algorithm, and implementing the control algorithm.

An object of the present invention is to provide a defect detection method and its apparatus which can adjust sensitivity easily by managing both reduction in the number of false reports and highly-sensitive detection of a defect using single threshold value setting in comparison inspection that compares an image to be inspected with a reference image to detect a defect judging from a difference between the images. According to the present invention, adjusting the brightness before inspection so that a difference becomes small at the edges of a high-contrast pattern in a target image enables reduction in the number of false reports caused by an alignment error, and achievement of highly-sensitive defect inspection using a low threshold value, without increasing the threshold value. Moreover, in the case of inspection targeted for a semiconductor wafer, which produces a problem of irregularity in brightness of a pattern caused by a difference between film thicknesses, the present invention reduces the number of false reports caused by the irregularity in brightness, and realizes inspection with high sensitivity without increasing a threshold value, by adjusting the brightness of both images before the inspection.

A sensor system (24) for controlling a ventilation unit (22) of a vehicle (20) includes a sensitivity selector (70) for enabling a user to select a setting (76) corresponding to an air quality threshold (94, 98), and an air quality sensor (62) proximate an exterior of the vehicle (20) for detecting an air quality parameter (71). A controller (66) is responsive to the selector (70) and the sensor (62), and is in communication with an inlet air valve (32) of the ventilation unit (22). A method (118) of operating the sensor system (24) entails receiving a current value of the air quality parameter (71) at the controller (66) for comparison with the air quality threshold (94, 98). The controller (66) generates a switch signal (74) in response to the comparison for adjusting the inlet air valve (32) between an outside air mode (44) and a recirculation mode (46).

A sensitivity adjustment device adjusts radio wave sensitivity of an antenna which wirelessly transmits / receives a signal to / from an external device. The sensitivity adjustment device includes a case and a ring-shaped rotating member. The case houses the antenna. The rotating member is disposed on the outside of the case in such a way as to be rotatable. The rotating member includes (a) a shielding part which shields a radio wave and (b) a penetration part which allows penetration of a radio wave. A positional relationship between (a) the antenna and (b) the shielding part and the penetration part is changed by rotation of the rotating member so that the radio wave sensitivity of the antenna is adjusted.

A physical quantity detecting is capable of easily adjusting sensitivity and an offset of a detected output without being increased in size. In a signal processor for driving a sensor element in which fixed electrodes are disposed on both sides of a movable electrode displaced in response to acceleration, a signal generator generates PWM signals PA and PB in which an invalid control period during which the fixed electrodes are both deenergized only during a period corresponding to data M3 stored in a memory, is, at a predetermined ratio, inserted into a valid control period during which the fixed electrodes are alternately energized and their energization ratio is controlled so that the movable electrode is placed in position. Since the sensitivity of the sensor element to the acceleration changes according to the length of the invalid control period which does not contribute to control of the position of the movable electrode, its sensitivity can be easily adjusted by simply changing the value set in the memory.

The Resettable Latching MEMS Shock Sensor provides the capability of recording external shock extremes without consuming electrical power. The device incorporates a shock sensitive suspended proof mass, spring-loaded contacts, latches, and actuators for device reset. The device can be designed, hardwired, or programmed to trigger at various shock levels. The device can be fabricated in a simple micromachining process that allows its size to be miniaturized for embedded and portable applications. During operation, the device consumes no quiescent power. The device can be configured to close a circuit, switch an interrupt signal, or switch some other electrical trigger signal between devices at the time of a shock extreme being reached, or it can be configured to latch and be polled at some time after the shock limit has occurred.

The invention provides a flexible fingertip pressure sensor and a manufacturing method thereof. The sensor body is an intermediate elastomer of which the material is human body silica gel. The sensor body is internally provided with cylindrical holes. Liquid conductive metal solution is arranged in all the cylindrical holes. The cylindrical holes are regularly arranged into an array, and the first and the last cylindrical holes arranged in the first row are respectively provided with a lead port A and a lead port B. A lead A is led out of the lead port A, and a lead B is led out of the lead port B. The flexible fingertip pressure sensor is high in flexibility so that damage to the sensor caused by excessive force can be avoided; damage to the sensor caused by human sweat can be avoided and the protection performance of the sensor can be enhanced; the service life of the sensor can be enhanced; and the manufacturing method is simple and convenient, and the measuring range and the flexibility of the sensor can be adjusted by adjusting the size of a metal wire and the thickness of the intermediate elastomer.

The invention relates to a near-infrared laser ranging method based on a linear sensitive photon detector, and belongs to laser ranging and weak infrared light detecting types. A ranging system achieves the linear sensitive photon detection on the basis of the external gain based on the pulse laser flight time ranging method and through the combination of a PIN photodiode and an EDFA, echo light with different intensities can be detected, accordingly, the distance information is obtained, meanwhile, the materials of a detected target is judged according to the specific number of returned photons, and precise measurement of different distances and different targets is achieved. Compared with other sensitive photon detection, the horizontal return light linear detection from a single photon to multiple photons can be achieved by adjusting the gain multiple of the EDFA, the photon number can be detected in a distinguishable mode, the working range of the laser ranging is greatly enlarged, the near-infrared laser ranging method meets the requirements for near, medium and remote laser ranging at the same time, and the fast distinguishing of the detected target material is achieved.

The embodiment of the invention discloses a method and device for determining sensitivity of a touch screen. The method comprises the steps of obtaining using information of intelligent equipment, wherein the using information comprises the using scene information of the intelligent equipment and / or the false alarm rate information of the touch screen of the intelligent equipment; determining the optimum sensitivity of the touch screen according to the using information. According to the technical scheme, the sensitivity of the touch screen of the intelligent equipment is dynamically adjusted according to the using information, the sensitivity of the touch screen of the intelligent equipment can be improved under the situation of not increasing false alarm points of the touch screen of the intelligent equipment, the operational steps needed by a user to manually adjust the sensitivity of the touch screen are reduced, and the time needed by adjusting the sensitivity of the touch screen is shortened.

This invention relates generally to a micromachined acoustic transducer that has a scalable array of sealed cavities and perforated members forming capacitive cells that convert the electrical signal to acoustic signal or vice versa. It also relates to the method and more particularly to a micromachined acoustic transducer which includes a plurality of micromachined membranes and perforated members forming capacitive cells and more particularly to an acoustic transducer in which the capacitive cells are connected in a scalable array whereby electrical signals are applied to the said array and converted to acoustic signals. The transducer can either be used as an acoustic actuator or a microphone.

The Resettable Latching MEMS Shock Sensor provides the capability of recording external shock extremes without consuming electrical power. The device incorporates a shock sensitive suspended proof mass, spring-loaded contacts, latches, and actuators for device reset. The device can be designed, hardwired, or programmed to trigger at various shock levels. The device can be fabricated in a simple micromachining process that allows its size to be miniaturized for embedded and portable applications. During operation, the device consumes no quiescent power. The device can be configured to close a circuit, switch an interrupt signal, or switch some other electrical trigger signal between devices at the time of a shock extreme being reached, or it can be configured to latch and be polled at some time after the shock limit has occurred.

The invention provides a carbon aerogel and a preparation method thereof, and a pressure sensor, and belongs to the field of researches on nanometer materials. According to the invention, the carbon aerogel formed from amorphous carbon and graphene through a mud brick structure and having omnidirectional compressible super-elasticity, and the preparation method thereof are provided; and the preparation method comprises: dispersing a saccharide-based additive and graphene oxide into a solvent to form a graphene oxide and additive mixed dispersing solution, drying the mixed solution to obtain anadditive-containing graphene oxide aerogel, and carrying out high-temperature heat treatment on the additive-containing graphene oxide aerogel under the protection of an inert gas to obtain the carbon aerogel, wherein the obtained carbon aerogel has the omnidirectional compressible super-elasticity. The present invention further relates to a tactile and pressure sensor based on the aerogel.

One reading sensor is used to read identification mark information, to decide whether a product is genuine.Identification marks each having sensitivity adjustment for the reading sensor and specific mark information are printed on a sheet of release coated paper. The sensitivity adjustment for the reading sensor is performed by utilizing information on a density acquired by reading the identification mark. By combining pieces of density information on a plurality of marks that constitutes the identification mark, mark information is generated. This mark information is checked against saved mark information. In this case, by utilizing the identification mark in which the plurality of identical marks are sequentially shifted in a traveling direction, even a reading sensor constituted of a single light-emitting element and a single photoreceptor element can acquire the mark information on the identification marks. The read mark information and the mark information contained in barcode information are checked against each other and, if they agree, it is decided that the product is genuine and a result of the decision is displayed.

The invention belongs to the technical field of operating maintenance of power transmission lines, and particularly relates to an anti-falling device for steel pipe pole operation of power transmission lines. The anti-falling device is arranged on a binding type safety belt base body, a steel pipe pole on the safety belt base body is carried by a worker to an operation position, a locked detectiondevice is unlocked and winds across angle iron so as to be tied, and a hanging ring of a falling brake device is hung at a high position. A warning message can be given out if a safety belt is not tied, and an insertion head can be pushed inwards automatically if the insertion head is not fastened. When the worker falls, a central control monitoring unit can provide a brake signal to make the falling brake device to act rapidly, mechanical brake is triggered if an electric fault happens, and thus dual protection is achieved. The work conditions of all components are fed back to ground monitoring personnel in the whole process. The anti-falling device has the advantages that the brake distance is short, noise is avoided in the operation process, reminding and monitoring functions can be achieved, and the anti-falling device is safe and reliable.

An optical fiber based polymer core sensor includes an optical fiber having a core and an end having a cured polymer core affixed to the core of the optical fiber. The cured polymer core extends outward from the end of the optical fiber and has a diameter approximately equal to the core of the optical fiber. Note the cured polymer core can be substantially cylindrical, tapered or geometrically shaped. The optical fiber based polymer core sensor can be used to measure a temperature, measure a strain, measure a distance, measure a refractive index, detect or measure an analyte, detect a toxin, detect a biological agent, monitor a chemical process, or a combination thereof

The capacitive stylus includes a pen tube, an upper skeleton structure, a lower skeleton structure, a pen cover, a refill, a refill holder, a trigger element, a spring, a control circuit board, a pressure sensing element and an adjusting element. The pen cover is connected with the pen tube by the upper skeleton structure and the lower skeleton structure. The trigger element is inserted in another end of the refill holder. The pressure sensing element is electrically connected with the control circuit board and disposed in accordance with the trigger element. When the refill and the refill holder press the spring so that the trigger element contacts the pressure sensing element, the pressure sensing element detects the pressure force against the refill. The adjusting element is configured to adjust the gap between the pressure sensing element and the trigger element.

An artificial knee joint includes a lower joint member, an axle, a kneecap member, and a press member. The lower joint member is formed with a horizontally extending axle-receiving hole, and a clearance extending from and in spatial communication with the axle-receiving hole. The axle is received in the axle-receiving hole. The kneecap member is pivoted to the lower joint member, and is adapted to be connected to a prosthetic thigh. The press member is mounted to the kneecap member for pressing the lower joint member when the kneecap member pivots in a direction relative to the lower joint member. Therefore, the clearance and the axle-receiving hole are constricted to result in tightened connection between the lower joint member and the axle and resistance to relative rotation between the lower joint member and the axle.

A sensor system for receiving an input signal and applying a digital control signal to adjust an output sensitivity of a triggering signal within the sensor system. The input signal includes a bias DC and a fluctuation bias voltage. The sensor system includes a first voltage contact, a normalized voltage contact, a normalized circuit and a comparison circuit. The first voltage contact provides a first comparison voltage based on the digital control signal, wherein the first comparison voltage defines a standby voltage region. The normalized voltage contact provides a reference voltage based on the digital control signal, wherein the reference voltage is located within the standby voltage region. When the fluctuation bias voltage is located outside of the standby voltage region, the sensor system outputs a triggering signal so as to adjust the digital control signal.

The invention provides a method for accurately and efficiently extracting a human head ellipse and detecting a shielded human face. The method for extracting comprises the steps that a background frame collected, analyzed and processed to obtain statistic conditions met by a background, and the statistic conditions serve as criteria of subsequent background updating; a frame difference method is utilized to adjust a binarization threshold value of a grey-scale image and remove the interference and the influence of the background, a binary image containing a person is obtained, and a rectangle of an area where the head is located is found out by using a statistic rule met by a human head curve and serves as a basis for subsequent processing; through a self-adaptive ellipse algorithm, the size and the position of the ellipse are adjusted according to the set criteria, and the optimal ellipse meeting the conditions is found through circulation. According to the method, the timeliness and the accuracy rate of the background upgrading are high, the need for real-time processing can be met, the basis for a subsequent head ellipse accurate extracting algorithm is provided, the method can be applied to a video processing and real-time monitoring system, and the detection for the shielded human face can be applied to the processing of ATM real-time monitoring videos, and used for the timely automatic alarming of suspicious situations.

An automatic alarm system that indicates the presence of a fish strike at an unattended fishing pole comprises a small transmitter located at an upper tip of the fishing pole activated by a motion sensor that energizes a transmitter and a light whenever a fish moves the rod. The sensitivity of the movement is adjustable via a switch, which allows the user to ignore small movement caused by breezes or other effects. A receiver is carried by the fisherman, comprising a small enclosure which is provided with both a vibrating and audible alarm. The receiver is capable of receiving pages up to hundreds of feet away. Both components are powered by user replaceable batteries.