144 results about "Light flicker" patented technology

A photo detective LCD device includes a light pen. The light pen includes a body, a driving pulse generating module and a light generating module. The body has a pen shape, and an end of the body includes an opening through which light exits. The driving pulse generating module is disposed in the body and generates first and second driving power pulses having first and second frequencies, respectively. The light generating module generates first and second light in response to the first and second driving power pulses, respectively. The first and second light flickers in a third frequency and a fourth frequency, respectively. The power consumption is reduced, and the brightness of sensing light is enhanced. The light pen generates light having at least two different frequencies, and the display device recognizes light generated from the light pen effectively. Therefore, the display device may operate without failure.

The invention discloses a robot anti-collision protection device based on machine vision, which comprises a robot, a shooting device for taking pictures, and a warning device. The warning device comprises a warning light and a buzzer. The robot comprises a parameter setting module, a processing module, a judging module and an execution module; the parameter setting module used for setting parameters, wherein the parameters comprises a default photo; the processing module is used for processing a photo taken by the shooting device; the judging module is used for comparing a processed photo to the default photo and judging whether a foreign object is close to the robot; and the execution module is used for taking different measures to the robot according to the compared result of the judging module: when the foreign object is located in a first area value, the warning light flickers a first color, when the foreign object is located in a second area value, the warning light flickers a second color, and the buzzer alarms, and when the foreign object is located in a third area value, the warning light is constantly on with the second color, the buzzer constantly alarms and the robot stops moving. The invention further provides a robot anti-collision protection method based on machine vision.

This is a multi-functional warning system for a vehicle and the related control method. This system is composed of a host unit and branch units. The branch unit is deposed in a tire, which includes sensor(s) for monitoring the pressure, temperature or other information about the tire; if it detected a tire in deflated high temperature or loosed status, it would generate a RF signal that would be sent to the host unit. The hosts unit deals with not only aforesaid RF signals, but also signals from acceleration sensor and signals about high-water-temp, low-oil pressure etc., a CPU processes all information and then gives a corresponding indication in voice, digital and light to warn the driver. Upon severe tire failure or high deceleration of the vehicle, the host unit send out a warning signal, make a warning light flicker to provide the follow-on vehicle with a warning, in bad weather it can turn on the warning light to guide and prevent rear-end collision. The system has advantage of giving an intelligent warning for tires, devices in the vehicle, and the trouble like high deceleration, which secure the safety of the personnel and the vehicle.

A photo detective LCD device includes a light pen. The light pen includes a body, a driving pulse generating module and a light generating module. The body has a pen shape, and an end of the body includes an opening through which light exits. The driving pulse generating module is disposed in the body and generates first and second driving power pulses having first and second frequencies, respectively. The light generating module generates first and second light in response to the first and second driving power pulses, respectively. The first and second light flickers in a third frequency and a fourth frequency, respectively. The power consumption is reduced, and the brightness of sensing light is enhanced. The light pen generates light having at least two different frequencies, and the display device recognizes light generated from the light pen effectively. Therefore, the display device may operate without failure.

The invention discloses a method and system for diagnosing hardware module faults based on indicator lights. The method includes the steps that first, a fault detection mechanism is added, a test interface and an identification code are added at each hardware module drive program inlet, and each hardware module corresponds to one test interface and one identification code; second, the indicator light flickering types corresponding to the identification codes are set, and one identification code corresponds to one indicator light flickering type; third, a database is established, and the one-to-one corresponding relation of the hardware modules, the identification codes and the indicator light flickering types is stored; fourth, the fault detection mechanism is started, when the hardware module faults are detected, the identification codes are read according to the indicator light flickering types, and corresponding hardware module names are read according to the identification codes. According to the method and system for diagnosing the hardware module faults based on the indicator lights, when the faults happen, the hardware faults can be detected quickly, time is saved, overhauling efficiency is improved, and analysis early warning and automatic repairing can be conducted on the hardware module faults, the faults can be automatically repaired conveniently and rapidly, and the after-sales repair cost is saved.

A solid-state lighting system includes a light-emitting device connected in series with a variable dim setting resistor, an adjustable regulator, and a current sensor disposed in a feedback loop between an adjust input of the adjustable regulator and the variable dim setting resistor. The voltage dropped across the variable dim setting resistor is forced to remain constant irrespective of the resistance setting of the dim setting resistor. The current sensor measures or senses the current flowing through the variable dim setting resistor and causes the adjustable regulator to adjust its output voltage and the forward voltage drop across the light-emitting device so that the current flowing through the light-emitting device matches the current set by the variable dim setting resistor. Controlling the current in this manner allows dimming to be performed over an extremely wide dimming range, to very low light levels, and without producing light flicker at any dim level.

A portable electronic device and a light flickering method for light emitting elements thereof are both disclosed herein. The portable electronic device includes at least one light emitting element. The light flickering method comprises the following steps: setting personalized light flickering data with a user interface; storing the personalized light flickering data; generating a control signal in accordance with the personalized light flickering data; and generating a driving signal in accordance with the control signal and driving the light emitting elements with the driving signal.

The invention discloses a backlight module group, a display apparatus and a sneak shot prevention system. The backlight module group comprises backlight and a control module connected to the backlight. The control module is used for making the backlight emit modulation light flickering according to a preset frequency. The preset frequency is greater than or equal to a scanning frequency of a shutter and is greater than a flicker frequency of a display screen. Through making the backlight emit the modulation light flickering according to the preset frequency, the preset frequency is greater than or equal to a scanning frequency of a rolling shutter. When the display screen located at a light emission side of the backlight module group is shot by a camera having the rolling shutter, images shot by the camera are a frame displayed by the display screen and a superposed image of light and dark stripes. The stripes shield the frame displayed by the display screen so that a sneak shot behavior is effectively prevented. The preset frequency is greater than the flicker frequency of the display screen so that eyes can not identify flicker of the backlight and normal display of the display screen is not influenced.

The invention relates to a logistics management system and positioning method based on RFID rapid positioning. The system comprises a logistics management terminal and items with active RFID tags. The system is characterized by comprising a RFID repeater and at least four RFID readers; the logistics management terminal comprises an information input circuit, a central processing chip and an emitting antenna; the information input circuit and the emitting antenna are connected to the central processing chip; the RFID repeater RFID readers are connected to the logistics management terminal in a manner of communication; the RFID tag comprises a processing module, a radio frequency antenna, an voice prompting circuit and a light flicker circuit, and the processing module is connected to the radio frequency antenna, the voice prompting circuit and the light flicker circuit electrically. Staff input the personal information of a recipient into the logistics management terminal, the personal information is received by the RFID of one item, the alarming promotion is provided when the received personal information is consistent with the stored information by comparing, and fast and accurate positioning of the target item is implemented.

A ballast circuit suitable for driving an LED or similar load, comprises a primary switch mode converter, means for measuring a modulation, such as a phase cut, as used for dimming light levels, on an input AC supply, a current regulator positioned in series with the load, and a feedback controller for controlling operation of the switch mode controller based upon measured modulation levels. The feedback controller is adapted to interrupt normal switching of the switch mode converter if modulation levels detected lead to the ballast working at a lower than desired efficiency (deep dimming), or if voltage levels across the current regulator are higher than desired. The feedback controller may have a further feedback means for controlling switch mode parameters during lower levels of modulation (shallow dimming). The circuit allows large dimming levels to be achieved without generating appreciable light flicker in the load.

The invention provides an intelligent medicine box system, which includes an intelligent medicine box and an external terminal; the intelligent medicine box includes an upper cover, a shell, a medicine cover layer, a medicine placement layer, and a circuit board; the intelligent medicine box also includes a control module , a power supply module, a display module, a detection module and a communication module; the invention also provides a control method for the intelligent medicine box system. The beneficial effects of implementing the present invention are: 1, the medicine box can be opened in multiple layers, which facilitates the replacement between the parts; Leakage occurs during the cleaning process with water and affects other electronic components of the medicine box; 3. The design of the first terminal and the second terminal enables the guardian and the person taking the medicine to know the situation of taking the medicine in time; 4. The designated indicator light flashes and monitors taking the medicine Whether the user opens the corresponding small cover, which reduces the possibility of the drug user taking the wrong drug.

The invention discloses an unlocking and door opening system and method based on mobile phone LED light.The system comprises a mobile phone and a door lock control circuit arranged on a door, wherein the door lock control circuit is connected with a door lock motor, a light flickering module is arranged in the mobile phone and comprises a password data editing and storing circuit, a data encryption circuit, a binary conversion circuit and a first single-chip microcomputer which are sequentially connected, a wireless transmitting circuit is connected to the binary conversion circuit, and the first single-chip microcomputer is connected with an LED light arranged on the mobile phone; the door lock control circuit comprises a photosensitive sensor, a second single-chip microcomputer, a wireless receiver, a storer and a data comparison circuit, the photosensitive sensor is connected one input end of the data comparison circuit through the second single-chip circuit, the wireless receiver is connected with the storer, the storer is further connected with the other input end of the data comparison circuit, and the output end of the data comparison circuit is connected with the door lock motor.Opening of a door lock is controlled through flickering of light, so that inconvenience brought by mechanical unlocking is avoided.

This invention provides devices and methods of determining flicker-related parameters of a light emitting source. In one embodiment, the method has the following steps: a) acquiring one or more photo images or video images of a light emitting source with an image capturing device that has a rolling shutter; b) generating, with a processor, from the photo images or video images a flicker frame having one or more flicker dark lines, wherein each flicker dark lines has an output column value of 1; and c) generating, with a processor, one or more flicker-related parameters based on the flicker frame, thereby determining the flicker-related parameters of the light emitting source.

An improved laser printer is provided that keeps its fuser at a standby temperature that is somewhat raised above the ambient temperature, which allows the printer to operate more quickly (to begin printing the first page) when a print job arrives at the printer. The time needed to raise the fuser's temperature is minimized, so that other printer operations become the determining factor in the time to first print parameter. The electrical energy that energizes the fuser is provided in a form that prevents light flicker, by use of AC waveform phase control, or by use of integer half cycle control. The present invention uses closed-loop feedback control, and the type of controller is a PID controller.

The invention relates to a safety protection device for a gas stove. The device at least comprises an infrared induction module and a timekeeping module. After igniting, an electromagnetic valve is switched on, the infrared induction module detects a human body spectrum within a range in real time and sends a signal to the timekeeping module, and then the timekeeping module begins timing; the infrared induction module detects the human body spectrum in the range once again and sends the signal to the timekeeping module; the timekeeping module judges the time interval between two detection signals, or if the timekeeping module judges that the value of the time between two adjacent detection signals is more than the preset value 1, and sends a signal to a main control module, a caution light flickers, and an alarm apparatus rings; and if the timekeeping module judges that the value of the time interval between the two adjacent detection signals is more than the preset value 2, the main control module sends the signal to the electromagnetic valve, then the electromagnetic valve is closed, a gas pipeline is closed, and a fire is quenched automatically.

The invention relates to a sound box with an LED (light emitting diode) color light effect. The sound box comprises a light transmission case, a mesh enclosure, a loudspeaker, a lamp board, a circuit board and a DMX signal interface, wherein LEDs are arranged in the lamp board, the circuit board is provided with a controller, the light transmission case is provided with a mesh enclosure assembly opening, the mesh enclosure is buckled on the mesh enclosure assembly opening, the loudspeaker is arranged in the light transmission case, a vibrating diaphragm of the loudspeaker faces to the mesh enclosure, the circuit board, the DMX signal interface and the lamp board are respectively accommodated in the light transmission case, the DMX signal interface is used for receiving DMX signals, the controller is used for driving and controlling the light flicker frequency and the luminescence mode of the LEDs according to the DMX signals, and the loudspeaker is used for giving out corresponding sound according to audio signals from one audio interface. The sound box has the advantages that when the color light emitted by the LEDs is projected on a floor or a wall through penetrating through the light transmission case, dynamically changed stage lighting patterns with beautiful colors are formed, and the built-in sound control function is matched with music with corresponding rhythms, so the sound box is equivalent to miniature stage equipment, and the acoustic-optical dynamic effect of the stage equipment can be simultaneously realized.

The invention discloses a warning lamp. The warning lamp comprises an area light source, a rotating piece, a first rotating shaft, a driving mechanism and a baseplate, wherein the area light source and the driving mechanism are both fixed on the baseplate; the rotating piece is fixedly connected with the first rotating shaft; the first rotating shaft is rotationally connected with the driving mechanism; the driving mechanism drives the rotating piece to rotate; the area light source comprises a light outlet surface for emitting light; a rotating surface of the rotating piece is parallel to the light outlet surface; the rotating piece comprises a light shielding part and a light transmitting part; when the light shielding part rotates to an opposite position of the area light source, the rotating piece shields the emitted light of the light outlet surface; and when the light transmitting part rotates to the opposite position of the area light source, the rotating piece transmits the emitted light of the light outlet surface. The light flicker of the warning lamp is realized through the rotation of the light shielding part and the light transmitting part corresponding to the area light source.

The invention discloses a non-contact appliance configuration device independent of the network environment and a non-contact appliance configuration method. A user inputs configuration parameters on a hand-held intelligent terminal. The user aligns the light-emitting components such as a screen and a flashlight of the hand-held intelligent terminal with a photosensitive diode of an appliance to be configured. The hand-held intelligent terminal encodes the configuration parameters into visible light flickering. A photosensitive sensor of the appliance to be configured reads, decodes and applies the visible light flickering. The appliance to be configured encodes a configuration result and the state information into the visible light or invisible light such as infrared ray flickering. The hand-held intelligent terminal reads the infrared ray flickering through a camera and decodes the infrared ray flickering so that the infrared ray flickering can be shown to the user. The hand-held intelligent terminal and the appliance to be configured are independent of the network environment. The appliance to be configured does not need to depend on buttons or the screen. The user can visually configure the appliance conveniently through the intelligent hand-held device resources such as a touch screen, a keyboard and software.

The present invention discloses a method and system for detecting desk lamp light. The method comprises the steps that desk lamp light information is obtained through a light-sensitive sensor arranged at a mobile terminal, and the light information comprises light brightness, the number of times of the flicker of the light in each second and the light wavelength; the mobile terminal carries out analog to digital conversion of the light information; the light intensity, the light flicker and the proportion of blue light in the light are determined at the mobile terminal according to the digital signal obtained by the analog to digital conversion. According to the method and the system, through the mobile terminal, the desk lamp light quality can be rapidly detected, the adjustment of the desk lamp light by people is facilitated, a good experience is brought to people, and the method and system are suitable for application.

The invention discloses drowning monitoring swimming goggles. The drowning monitoring swimming goggles comprise a water pressure sensor, an indicator light, a battery, a switch, a central processing unit, a remote communication module and a GPS positioning module. The water pressure sensor is electrically connected with the central processing unit and is used for detecting the swimming information of a swimming goggles wearer and sending the information to the central processing unit, and if the time of the swimming goggles being under water exceeds a certain time, then the judgment that a drowning condition occurs can be conducted. The central processing unit comprises a master control MCU, the master control MCU achieves a timer function and is used for receiving information collected by the sensor module and storing the information in a storage, and if it is detected that a swimmer is under the drowning condition, help seeking can be conducted through the remote communication module. The GPS positioning module is used for confirming a drowning position, and a rescuer can quickly confirm the rough position of a drowner. The indicator light flickers continuously when the drowning condition occurs and is used for confirming the specific position of the drowner. The drowning monitoring swimming goggles have the advantages that precise waterproof design is adopted, the direction of the swimmer can be monitored at any time, a warning is sent out in time when a drowning accident occurs in the swimming process, and the drowning accident is prevented from happening.

The invention discloses a disinfection ambulance instrument for a battleground. The disinfection ambulance instrument is characterized in that a power source part is respectively connected with a control program circuit board, a help-calling light flickering device, an emergency light illuminating circuit and an ozone generator, wherein an ozone disinfection key, a help-calling light flickering key and an emergent light illuminating key are arranged on a panel of the control program circuit board 2; when persons in a battleground, an earthquake site, a mountain area and the like are hurt, a power source of the disinfection ambulance instrument for the battleground is turned on, the ozone disinfection key is pressed down and ozone instantly are blown out from an air outlet rubber tube; the air outlet rubber tube faces wounds of hurt persons, ambulance appliances or narrow spaces for sterilizing. When a helicopter is send out to search wounded persons, the wounded persons turn on the emergency light illuminating circuit of the disinfection ambulance instrument for the battleground so as to be conveniently found by rescue workers. The power source part is a high-volume solar mobile charging power source or a direct-current (DC) 12V automobile storage battery or a charging lithium battery.

The invention discloses a method for forming an incandescent-lamp-composed flicker-free low-blue-light full spectrum special light. The special light adopts a high voltage direct current power supply (310V) for power, making the special light flicker-free and solving the fundamental problems of an incandescent lamp. According to the method, two ordinary light bulbs are used and connected in series to equally spread the 310V direct current voltage, which further reduces the color temperature of the incandescent lamp, further reduces the blue-ray hazards, promotes the visual and non-visual health, and extends the service lifetime of incandescent lamp as well as reduces the dazzling light and the surface temperature of the incandescent lamp, therefore, making the use of the incandescent lamp more secure. The method promotes the multiple new illumination ideas for low illuminations and holds that under special illumination, the deeply red part and the infrared waveband of the incandescent lamp have health significance, and are not all entirely a waste of energy. The invention also discloses a method for forming a light powered by low voltage and consisting of a plurality of incandescent lamp beads. The disclosed method is assessed by experiments, and the light quality is ensured to be perfect, making the special light of profound significance to the health and reproducing of the Chinese nation.

The invention discloses a notifying system for calling sequencing numbers, comprising an input module, a first control module, at least one LED (light emitting diode) lighting device and a receiving device, wherein the input module is used for receiving the sequence numbers inputted by a servant and transmitting the sequencing numbers to the first control module; the first control module is used for generating a code signal according to the sequence numbers, and transmitting the code signal to the LED lighting device so as to enable the LED lighting device to flicker with high light and low light; and the receiving device comprises a light receiving model, a second control module and a prompting module, wherein the light receiving module can generate continuously changed response voltage according to the high-low light flicker frequency of the LED lighting device, the second control module is used for decoding the response voltage so as to obtain the sequence numbers and to cause the prompting module to send out a prompting signal. The notifying system for calling the sequencing numbers can achieve the purpose of notifying customers without being restricted by area coverage, and can reduce the cost needed for system construction.

The invention relates to an inclined-angle type double-fiber arc light detection probe, and the probe comprises a pre-posed casing pipe, a film, a transmitting optical fiber, a receiving optical fiber, an optical fiber fixing support, a post-posed casing pipe, a light source, and a light signal detector. An optical signal emitted by the light source is transmitted to the film through the transmitting optical fiber, is reflected by the film to receiving optical fiber, and then is detected by the light signal detector. The film can induce a sound signal generated by an electric arc to generate corresponding vibration, thereby changing the intensity of the light signal, emitted by the light source, received by the light signal detector. At least one of the pre-posed casing pipe, the optical fiber fixing support and the post-posed casing pipe is made of materials doped with a fluorescent material. The fluorescent material can enable arc light generated by the electric arc to be converted into a fluorescent signal corresponding to the electric arc, thereby changing the intensity of the fluorescent signal received by the light signal detector. The probe employs an inclined-angle double-fiber structure, can detect the sound signal and light signal of an arc light flicker event, is high in system sensitivity, and can achieve a self-inspection function.

Anti-flicker camera and image capture method are disclosed. According to the disclosed method, exposure integrals of different lines of an image sensed by a camera device are calculated. The exposure integrals are compared with reference exposure integrals of the plurality of lines, respectively, to calculate exposure integral offsets for the lines. The reference exposure integrals are estimated from at least one reference image. The positive and negative changes of the exposure integral offsets are statistically analyzed and, accordingly, it is determined whether there is light flicker from background illumination and an auto-exposure control module of the camera device is controlled based on the determination.

The invention discloses an online sulfur hexafluoride gas leakage monitoring system based on a differential absorption laser trolley. The online sulfur hexafluoride gas leakage monitoring system based on the differential absorption laser trolley comprises the differential absorption laser trolley, a GPS (Global Position System) satellite, a wireless base station, a processing platform and a smart phone, wherein the processing platform gives an instruction to command the trolley to detect a leakage concentration value and a leakage point position of SF6 gas, the trolley transmits the detected data to the processing platform, the processing platform calculates the leakage concentration value and the leakage point position of the SF6 gas and the trolley position information and displays the information on an electronic display screen; and when the leakage concentration exceeds a certain value, the indicator light flickers, the buzzer rings, and the alarm aim is achieved. Meanwhile, the processing platform transmits the calculated leakage concentration value and the leakage point position of the SF6 gas and the trolley position information to the mobile phone in a short message form. The online sulfur hexafluoride gas leakage monitoring system disclosed by the invention has the functions of SF6 gas leakage detection, high accuracy positioning, wireless communication and the like.

The invention discloses an induced respiration controller and mainly solves the problems that the prior respiration control technology is low in efficiency, inconvenient to implement and is high in cost. The induced respiration controller comprises an eyeball protection unit, a breathing lamp unit, a control unit and an electric power unit, wherein the eyeball protection unit is used for protecting eyeballs of a patient from being injured by radiation; the breathing lamp unit is arranged in the eyeball protection unit and is used for generating gradient light ray, enabling the eyeballs of the patient to sense the light and inducing the patient to regulate the breathing frequency and extent according to the light flicker frequency; the control unit is used for controlling and regulating the flicker frequency of the breathing lamp; and the electric power unit is used for supplying electric power to the breathing lamp and the control unit. Based on the structure, the invention also discloses an implementation method of the induced respiration controller. According to the induced respiration controller, the breathing speed and extent are controlled through lamplight, the speed of lamplight is adjusted in a visualized manner, the patient is enabled to adapt to the regulation more easily, the difficulty of respiratory training in clinical context is reduced, and the respiratory control efficiency is improved. Therefore, the induced respiration controller and the implementation method thereof are suitable for popularization and application.

The invention relates to a truck reversing radar device, wherein reversing radars are arranged on the two sides of a vehicle body extending outward for certain distance, and a monitoring angle is provided for the reversing radars to monitor the back of the vehicle; and meanwhile, a radar indicator light can reflect the obstacle distance behind the vehicle according to the detection distance of the reversing radars, the driver can directly see the light flicker condition of the reversing radars through the rearview mirror, thus the reversing is assisted, and the cost is relatively low. Compared with audible alarm, the adaptation of the device to a noisy environment is higher; without an additional signal line for feeding back the distance information, the judgment of the obstacle behind can be finished directly by observing the radar indicator light; the mounting position does not take the truck space; and meanwhile, the cost is relatively low, and the device is suitable for a large truck.

An intelligent daytime running light control system comprises an MCU (Microprogrammed Control Unit), a signal input module, an MCU power conversion module and vehicle-mounted storage batteries. The signal input module comprises a main relay switch signal input circuit, a left and right turn light switch signal input circuit, a high-beam and low-beam light switch signal input circuit and a vehicle door switch signal input circuit. The MCU control includes the following steps of 1) waking up the MCU; 2) detecting the level degree of a main relay switch signal; 3) determining whether turning off a left daytime running light and a right daytime running light or not; 4) sequentially determining whether a left turn light and a right turn light both flicker, high-beam lights flicker quickly, the left turn light flicker and the right turn light flicker or not; 5) determining whether starting a position light mode or a daytime running light mode or not. According to the intelligent daytime running light control system, daytime running lights have functions, such as remote control of Follow me, vehicle searching and positioning, double-jump flickering, high-beam quick flickering, left and right turn light auxiliary quick flickering and automatic switching between the daytime running lights and position lights.