55results about How to "Avoid false triggering issues" patented technology

The invention provides a digital signal isolator comprising a sending terminal and a receiving terminal. The sending terminal comprises a filtering circuit, a refresh circuit, a delay circuit, a refresh and pulse combination circuit, a differential signal conversion circuit, a first isolation gate capacitor and a second isolation gate capacitor; the receiving terminal comprises a third isolation gate capacitor, a fourth isolation gate capacitor, a hysteresis comparator, a watchdog circuit, a filtering circuit and an or gate. The digital signal isolator disclosed in the invention is capable ofkeeping an electric level unchanged for a long time even when low speed signals are transmitted, the digital signal isolator can be prevented from interference from a common mode electric level, and problems of false triggering can be effectively prevented.

The invention relates to the field of ocean detection equipment, in particular to a multifunctional wave energy profile buoyage system. The multifunctional wave energy profile buoyage system comprisesa floating ball, a buoyage platform, a steel cable, an upper triggering block, a lower triggering block and an anchorage block; the buoyage platform comprises a supporting column, an isolation frame,a big floating block, a main supporting plate, a steel cable single-double way control unit, a lever unit and a concentric limiting unit. The multifunctional wave energy profile buoyage system has the advantages that the sensitivity is high; a false triggering prevention design and a wear resistant design are adopted; a switching plate can be pushed downwards / upwards under the driving of outsidepower so that the steel cable is in single / double-way working modes so as to realize a purpose that the whole profile buoyage platform can move on upper and lower profiles along the steel cable underthe action of the wave energy; under the action of waves, the multifunctional wave energy profile buoyage system can move up and down along the steel cable in a reciprocating manner and can carry different types of sensors to finish ocean three-dimensional profile parameter measurement; and the multifunctional wave energy profile buoyage system has the advantages that the launching / recovery is convenient, the carrying(loading) capacity is high, power supply is not consumed, and the multifunctional wave energy profile buoyage system can anchor and can also float.

The invention relates to the field of ocean monitoring equipment, in particular to a buoy system applied to the field observation of a three-dimensional cross-sectional structure of an ocean vortex. The system comprises a water sail, a wave energy buoy platform, a floating ball, a steel cable and an anchor block, the water sail is composed of four sail boards, the four sail boards are fixedly connected to the outer frame of the wave energy buoy platform in a cross shape, the floating ball is connected to the top end of the steel cable, the anchor block is connected to the bottom end of the steel cable, and the steel cable passes through the wave energy buoy platform which is crawled along the steel cable. The system can flow with the ocean vortex to achieve long-term continuous, adaptive-tracking, multi-parameter-synchronization and ultra-high space-time recognizing observation of the ocean vortex, especially a sub-middle-scale vortex three-dimensional section structure.

A dynamic knee point detection circuit comprises a first feedback resistor, a second feedback resistor, a leakage inductance leading edge blanking module, a ripple amplification module, a first comparator, a second comparator, an NOR gate and a dynamic leading edge blanking module, and the first feedback resistor and the second feedback resistor are used for obtaining feedback voltage of voltage of dotted terminals on an auxiliary winding in a flyback converter. The leakage inductance leading edge blanking module is used for shielding the feedback voltage when the secondary side of the flybackconverter just starts to be conducted to generate resonance. The ripple amplification module is used for amplifying the feedback voltage within a transmission band range and then outputting the feedback voltage. The first comparator, the second comparator and the NOR gate are used for judging whether the feedback voltage exceeds a set threshold value or not. The dynamic leading edge blanking module is used for obtaining the arrival time of the knee point voltage and the knee point voltage value. The circuit is suitable for the resonant frequency in a wider range, has higher sampling precision, and cannot generate the problems of false triggering and the like.

The invention discloses a negative pressure detection circuit applicable to dead-time control, belonging to the technical field of electronic circuits. The negative pressure detection circuit comprises a comparator, a resistor and a current generation module, wherein the current generation module is used for generating first bias current, second bias current and third bias current; the resistor comprises a first resistor and a sixth NMOS (N-channel Metal Oxide Semiconductor) transistor; one end of the first resistor serves as the input end of the negative pressure detection circuit, and the other end of the first resistor is connected with a source of the sixth NMOS transistor; the grid of the sixth NMOS transistor is connected with the second bias current; the drain is connected with thethird bias current and the second input end of the comparator; the comparator comprises a fourth NMOS transistor, a fifth NMOS transistor and a phase inverter; the grid and drain of the fourth NMOS transistor are in short circuit, and the fifth NMOS transistor is connected with the grid of the fifth NMOS transistor and the first bias current, and the source serves as a first input end of the comparator to be grounded; the source of the fifth NMOS transistor serves as a second input end of the comparator; the drain is connected with the input end of the phase inverter and the grid of the sixthNMOS transistor; and the output end of the phase inverter serves as the output end of the negative pressure detection circuit. According to the negative pressure detection circuit disclosed by the invention, the reliability and the detection performance can be ensured simultaneously.

The invention discloses a device for monitoring out-of-control falling of lifting equipment. The device comprises an acceleration sensor, a low-pass filter, a high-pass filter, a first comparator, an integrator, a second comparator and a latching relay, wherein an output terminal of the acceleration sensor is connected with an input terminal of the low-pass filter; an output terminal of the low-pass filter is connected with an input terminal of the high-pass filter; one path of output of the high-pass filter is connected with the integrator through the first comparator; another path of output of the high-pass filter is directly connected with the integrator; an output terminal of the integrator is connected with an input terminal of the second comparator; an output terminal of the second comparator is connected with an input terminal of the latching relay; and an integrator switch is connected in series between the first comparator and the integrator. According to the device disclosed by the invention, a complex mechanical principle is replaced by using an acceleration principle, and thus the out-off-control falling monitoring of the lifting equipment such as elevators is realized. The device has the advantages of simple structure, small size, low cost, easiness in mounting and the like and has universality and practicality.

The invention discloses a level shifter applied to a segmented driving circuit of a wide bandgap power device. The level shifter comprises a level conversion module, a digital logic processing moduleand an RS latch module. A power rail conversion module converts signals of a low-voltage area into signals of a high-level voltage area through an LDMOS, and signals of the high-voltage area are processed through a low-voltage MOSFET; the digital logic processing module is used for detecting the change of the signals at the output end of the power rail conversion module and quickly transmitting the signals to the RS latch module; the RS latch module is used for stabilizing the output signal at a set level value so as to prevent misoperation caused by interference; and in some embodiments, an auxiliary pull-up module for reducing the dynamic power consumption of the level shifter is arranged between the level conversion module and the digital logic processing module. According to the invention, the false triggering problem of the level shifter is solved through logic design, the circuit response speed is improved, and meanwhile, the level shifter has the characteristics of zero static power consumption and low dynamic power consumption.

The invention provides an antenna transmitting power adjusting method, an antenna transmitting power adjusting device and a mobile terminal. The antenna transmitting power adjusting method comprises the following steps of: establishing a mapping relation table between capacitance values and distance values at different temperatures, wherein the capacitance values are capacitance, detected by a capacitive proximity sensor, between a radiation body and a to-be-detected main body, the distance values are the distance, determined according to the capacitance values, between the radiation body andthe to-be-detected main body, the mapping relation table comprises a plurality of mapping relations, and each mapping relation corresponds to one temperature; acquiring a current capacitance value detected by the capacitive proximity sensor and a current distance value detected by a light sensing proximity sensor; determining a target mapping relationship in the mapping relationship table according to the current distance value and the current capacitance value; and adjusting transmitting power of an antenna according to the target mapping relationship. According to the antenna transmitting power adjusting method, the antenna transmitting power adjusting device and the mobile terminal provided by the invention, the antenna transmitting power of the detection accuracy of the capacitive proximity sensor can be improved.

The invention discloses a key switch, which comprises a base, an upper cover, a sleeve member, an elastic member, a circuit board, an optical path guide structure, an optical emitter and an optical receiver. The upper cover is arranged on the base. The sleeve member is rotatably sleeved on the positioning post of the base and movably passes through the upper cover to connect the key cap. The elastic member abuts against the sleeve member and the base. The circuit board is arranged under the base. The optical path guide structure is formed to extend downwardly from the sleeve member. The optical emitter and the optical receiver are respectively arranged on two opposite surfaces of the circuit board, and the light of the optical emitter is incident into the optical path guiding structure forreflection to the optical receiver. When the key cap is pressed, the optical path guiding structure generates a trigger signal as the sleeve member moves downward to conduct or block transmission ofthe optical path established by the optical emitter and the optical receiver through the guidance of the optical path guiding structure. The invention can improve the triggering accuracy of the key switch and the problems of easy wear and tear of the switch assembly and complicated welding manufacturing process.

The embodiment of the present invention relates to the technical field of terminals, especially to a method for temperature compensation of an SAR (Specific Absorption Rate) sensor of a terminal and aterminal. The terminal comprises a temperature induction device, a processor and an SAR sensor; the temperature induction device is configured to send first triggering signals to the processor when it is detected that a temperature variable of the SAR sensor exceeds a preset value; the processor is configured to send first temperature control signals to the SAR sensor when the first triggering signals are received; and the SAR sensor is configured to start second-order temperature compensation of the SAR sensor according to the first temperature control signals, wherein the second-order temperature compensation and first-order temperature compensation of the SAR sensor commonly compensate base line data of the SAR sensor. Therefore, the method for temperature compensation of the SAR sensor of the terminal and the terminal can ensure the base data of the SAR sensor, can track the variable of the temperature in real time and can avoid the problem that the false triggering of the SAR sensor is caused by drastic changed temperature of the terminal.

The invention discloses a control method, electronic equipment and a nonvolatile computer readable storage medium. The electronic equipment comprises a display device, the display device comprises a fingerprint recognition module, and a fingerprint recognition area, corresponding to the fingerprint recognition module, on the display device is located in a display area of the display device. The control method comprises the steps of obtaining a current distance between the electronic equipment and a target object; obtaining the touch area of the fingerprint identification area touched by the finger of the user; and when the current distance is smaller than the preset distance or the touch area is larger than the preset area, enabling the fingerprint recognition module to be in a non-working state. According to the control method, the electronic device and the nonvolatile computer readable storage medium, the fingerprint recognition module is triggered to work by setting the specific triggering condition, the false triggering problem in most scenes can be avoided, and the energy consumption of the electronic device can be reduced.

The invention provides an electronic scale control method and an electronic scale. The electronic scale comprises a touch key, a controller, a power supply and a pressure sensor. The method comprisesthe following steps: after detecting a trigger signal of the touch key, the controller controls the power supply to supply power to the pressure sensor; the pressure sensor collects a pressure signalgenerated by pressing the touch key by a user and sends the pressure signal to the controller; and the controller judges whether a state switching condition is met or not according to the pressure signal, and if the state switching condition is met, the electronic scale is controlled to be switched from the first state to the second state. According to the embodiment of the invention, the pressuresensor is controlled to start working after the touch key is detected to be triggered, and the electronic scale is controlled to perform state switching under the condition that the pressure signal is detected to meet the switching condition without periodic detection of the pressure sensor, so that the electric energy is saved; and whether the state of the electronic scale needs to be switched or not is determined by triggering the touch key and the pressure combination, and the problem of false triggering is avoided.

The invention provides a key mistaken touch prevention structure, which comprises a touch panel and a controller, and is characterized in that the touch panel is provided with a touch area and a mistaken touch prevention area, the touch area is provided with an induction coil, the mistaken touch prevention area is provided with a shielding coil, and the induction coil and the shielding coil are respectively connected to the controller. The invention further provides a key mistaken touch prevention method using the key mistaken touch prevention structure. The key mistaken touch prevention method includes the following steps that different induction coils are used for inducting static electricity of a user and generating different induction signals; sensing static electricity of a user by utilizing a shielding coil and generating a shielding signal; and receiving the sensing signal and / or the shielding signal by using the controller and judging whether to respond or not. According to theinvention, the false triggering problem of the non-deformable light touch panel can be solved.

The invention relates to a tail gate opening and closing control system and a tail gate opening and closing control method.The system comprises a central controller, a millimeter wave radar sensor, a projection lamp and a tail gate controller, the millimeter wave radar sensor, the projection lamp and the tail gate controller are all connected with the central controller, the projection lamp is used for illuminating a preset area, and the tail gate controller is used for controlling the projection lamp to illuminate the preset area. The central controller is set to control the projection lamp to be turned on and control the millimeter wave radar sensor to work when it is detected that the position of a vehicle key enters a tail door triggering area. The millimeter wave radar sensor is configured to send a control instruction to the central controller when detecting that an object enters a preset area and does not leave the preset area within a preset time or when detecting that a kicking action executed by the object in the preset area accords with a threshold feature of a preset point cloud model. Whether the trigger action occurs in the preset area or not is detected by indicating the preset area, so that opening or closing of the tail gate can be accurately controlled.

The invention, which belongs to the technical field of the electric meter, discloses a moisture-proof intelligent electric meter comprising an acquisition module, a processing module, a control module and a dehumidification module. An internal environment humidity signal of the intelligent electric meter is acquired through the acquisition module, the environment humidity signal is received and processed through the processing module, the control module generates a trigger signal according to processed environment information, and the dehumidification module performs corresponding action according to the trigger signal. Thus, basic electric energy metering and statistics are realized, monitoring of the use condition of the intelligent electric meter is realized, dryness of the internal environment of the intelligent electric meter is maintained, the service life of the intelligent electric meter is prolonged, and the use effect and the use benefit of the intelligent electric meter are comprehensively improved.

The invention provides an implementation method of adaptive clock holdover mode and a device thereof. The method includes: cell delay variation tolerance first input first output (CDVTFIFO) buffer underflow event is detected, if no new time division multicomplex service pay load is received within preset time, an adaptive clock is triggered to be in holdover mode. By adopting the invention, the problem of false triggering of adaptive clock holdover mode can be effectively solved.

The invention discloses an examination device for the neurology department. The examination device comprises a shell, a needling assembly, a needling box body, an induction structure, a sliding structure, an electromagnetic lock and a needle retracting switch for controlling the electromagnetic lock to be opened and closed; the needling assembly is installed in the needling box body; the needling box body is arranged in the shell through the sliding mechanism; the electromagnetic lock locks the needling box body at a position closer to a needling opening at the front end of the shell; the needling box body is connected with the front part of the shell through a needle retracting spring; the induction structure comprises an induction end, which is arranged in front of the shell and is pressed on the body surface of a human body during use, and a winding roller arranged in the shell; the winding roller is connected with the induction end through a friction rope belt; the winding roller and the induction end are each provided with an elastic structure to maintain the friction rope belt in a tensioned state; the needle retracting switch is used for controlling the electromagnetic lock to be opened and closed; and a movable contact of the needle retracting switch is pressed on the friction rope belt in the using process. According to the invention, the action of retracting a touch needle can be sensitively and accurately triggered when the human body moves without being influenced by whether the body surface around the acupuncture part is flat or not.

The invention relates to the field of marine detection equipment, in particular to an underwater lever type steel cable single-double directional control assembly of a wave energy profile buoy. The underwater lever type steel cable single-double directional control assembly of the wave energy profile buoy comprises main supporting plates, a steel cable single / double directional control unit, a lever unit and a concentric limit unit, the steel cable single / double directional control unit, the lever unit and the concentric limit unit are arranged between the two main supporting plates, an uppertrigger block is fixed to the top end of a steel cable, a lower trigger block is fixed to the bottom end of the steel cable, and the steel cable penetrates through the concentric limit unit and the steel cable single / double directional control unit to move in the two directions or only in one direction under control of the steel cable single / double directional control unit. According to the underwater lever type steel cable single-double directional control assembly of the wave energy profile buoy, high sensitivity, anti-trigger design, and anti-wear design are achieved, under driving of external power, the steel cable can be in two working modes of the single / double directions by pushing a switching plate downwards / upwards, and thus the purpose that a whole profile buoy platform conductsup-down profile movement along the steel cable under the action of wave energy is achieved.

The invention relates to the technical field of electronic terminal equipment. The invention discloses a pressure-sensitive key and a method for triggering a key function of the pressure-sensitive key. Electronic terminal device, The pressure-sensitive key comprises a shell and a pressure-sensitive key body, wherein a pressure-sensitive key area is formed on the shell, the pressure-sensitive key body is arranged on the inner side of the pressure-sensitive key area, the pressure-sensitive key body comprises a bioelectricity identification unit, a pressure-sensitive unit and a control unit, andthe bioelectricity identification unit is used for generating a biological trigger signal when a pressing object pressing the pressure-sensitive key area is a biological body; The pressure sensing unit is used for generating a pressure trigger signal when the force of pressing the pressure sensing key area by the pressing object is within a preset pressure range; And the control unit is in signalconnection with the bioelectricity identification unit and the pressure sensing unit, and generates a key function trigger signal only when the organism trigger signal and the pressure trigger signalare received at the same time. The pressure-sensitive key body of the pressure-sensitive key is provided with the bioelectricity identification unit, so that a non-organism false triggering key function can be avoided.

The invention discloses a gesture recognition non-contact switch system. The switch system comprises an induction area and a recognition area. The induction area comprises a copper-clad plate, the recognition area comprises a single-chip microcomputer, an FDC2214 capacitive sensor and a relay, the copper-clad plate of the induction area is connected with the FDC2214 capacitive sensor through a Dupont line, the single-chip microcomputer is connected with the FDC2214 capacitive sensor through the Dupont line, and the relay is connected with the single-chip microcomputer through the Dupont line.The capacitance of the copper-clad plate is changed along with the gesture above the copper-clad plate; the FDC2214 capacitance sensor is used for monitoring the capacitance value of the copper-clad plate and sending the capacitance value to the single-chip microcomputer, and the single-chip microcomputer matches the capacitance value with a stored set gesture capacitance value, recognizes and determines a current gesture and sends an instruction to control the relay to perform on-off action according to the recognized current gesture. The system has the advantages of high precision, low powerconsumption, low noise, strong anti-interference capability, low cost and capability of preventing mistaken touch.

The invention discloses a synchronous trigger device with a multi-stage digital delay function and a trigger method. The synchronous trigger device comprises a synchronous electromagnetic wave triggerinstrument and a light receiving module, wherein the synchronous electromagnetic wave trigger instrument is formed by machining an aluminum shielding shell and internally comprises a two-stage amplifying circuit, an isolation transformer, a rectifying and filtering circuit, a high-speed comparator, a microcontroller, a display screen and a trigger signal driving circuit; the synchronous electromagnetic wave trigger instrument externally comprises a bar-shaped antenna, a plurality of sets of synchronous light signal and level signal output ports, and a grounding pillar. The synchronous triggerdevice is small in size, multi-stage trigger signal digital delay, automatic trigger sensitivity adjustment, trigger level maintenance and other functions can be realized through simple setting of the touch display screen, and the synchronous trigger device has the advantages of being high in synchronous and delayed trigger precision and friendly in human-machine interaction, and can work in complex electromagnetic environments to realize multi-stage delayed trigger of different measurement points.

The invention provides a current triggering type detonation integrated circuit applied to an electronic safety system. The current triggering type detonation integrated circuit comprises a PCB substrate circuit, an internal insulation packaging layer surrounding the PCB substrate circuit, an external metal shielding layer and an external lead layer. The external lead layer is connected with pins of the internal PCB substrate circuit, and the pins comprise a current anode input end I +, a current cathode output end I-, a power supply pin VCC, a grounding pin GND and a high-voltage end VCCH; the PCB substrate circuit is integrated with a current detection module, a differential amplification module, a high-voltage switch module, a current positive electrode end, a current negative electrode end and a high-voltage end. According to a packaging method, the influence of direct external interference on the internal circuit can be greatly reduced; and compared with a detonation circuit triggered by a level, the detonation circuit provided by the invention has the advantages that a current-triggered detonating mode is realized; and when the voltage of the current positive electrode end and the voltage of the current negative electrode end are voltage signals, the detonation circuit does not detonate, and the problem of false triggering caused by externally input interference level is avoided.

The invention discloses a system and method for self-adaptive identification of piano key action. The system mainly comprises a key detection unit and a main control unit. The method comprises the steps of 1, applying for an array BOT [7]; 2, initializing peripheral equipment; 3, scanning the ADC value once; 4, gradually switching on all LEDs and then switching off the LEDs to show that equipment is ready, and to prevent the situation that the IO state of the equipment is unstable during starting to make the LEDs switched on by accident; 5, making the equipment enter the working state; 6, scanning the ADC value of seven white keys circularly; and 7, sending a key press-down signal through UART if the ADC value is larger than the rising threshold VH[i], sending a key lifting signal if the ADC value is smaller than the descending threshold VL[i], and returning to step 5 for the next round of scanning. A hysteresis comparative method is adopted, one third and two thirds of the difference value of output voltage of a phototube reflected by a lifted key and a pressed key are used as comparative values, false triggering is effectively avoided, accuracy is high, stability and reliability are realized, and using is convenient.