81 results about "Seven-segment display" patented technology

An electroluminescent lamp or display comprises a first electrode on a substrate interdigitated with a second electrode on the same substrate. A layer of electroluminescent material is provided over the electrodes. The arrangement has the advantage that light from the electroluminescent material does not need to pass through either of the electrodes. The substrate may be a printed circuit board. In an alternative embodiment the second electrode is provided over the layer of electroluminescent material and gaps are provided in the electrode for the emission for light. The electroluminescent lamps may be used to form a seven-segment display.

The invention discloses a digital meter recognition system and method based on vision. The system comprises a digital meter, a vidicon for collecting dial plate images of the digital meter and a PC for image digital recognition. The vidicon is connected with the PC through a USB interface or an image collecting card. The vidicon collects digital meter images and uploads the digital meter images to the PC. The PC carries out image preprocessing, image character segmentation and character tilt correction on source images in sequence, and finally a BP neural network template is used for character recognition. In the character recognition, according to the structure features of seven sections of digitrons, seven-feature scanning is carried out, and high recognition rate can be achieved through small calculated amount; the character images are subjected to character tilt correction, extracted recognized features are matched with the template, and the accuracy of character recognition is improved; and the recognition method based on a BP neural network with an on-line training function is used, the stability of a recognition algorithm is enhanced, and robustness is improved.

A target detecting and tracking system using a background differencing method based on FPGA comprises a FPGA device, a SD card, an LED indicator light, a DDR2SDRAM, two seven-segment digital tubes, an LTM display screen and a minimum video detecting and tracking system, wherein the minimum video detecting and tracking system is embedded in the FPGA and is integrated in a SOPCbuilder environment with an AVLON bus as a standard. The target detecting and tracking system using the background differencing method based on FPGA is mainly used for detecting and tracking moving objects in static scenes. A target detecting and tracking method using the background differencing method based on FPGA comprises the steps of a. reading AVI format video files with the SD card, b. converting the AVI format video files into multiframe images, c. detecting and tracking the videos based on the images, d. obtaining the moving objects which are to be tracked, and e. displaying tracking results on the LTM display screen. Due to the fact that an FPGA platform is adopted by the system, the system is high in parallelism performance, and computing speed is improved. The target detecting and tracking method is good in tracking effect and adaptability, particle filter algorithm which is suitable for non-linear non-Gaussian dynamic models, and the target detecting and tracking system is similar with real scenes and is good in adaptability and high in tracking accuracy.

The connection topology of input terminals 2, elements 4a, 4b, 4c and 4d and load 5 is designed similarly to a so-called “seven-segment display”, which is often used to display numerals on an electronic calculator or a digital watch. More specifically, suppose in the three horizontally running segments, the top and bottom segments are associated with the input terminals 2 and the load 5 is allocated to one of the four vertically running segments. Then, the three other vertical segments and the other horizontal segment are associated with the elements 4a, 4b, 4c and 4d, which are an inductor with an inductance of 5.119 nH, a capacitor with a capacitance of 1.370 pF, an inductor with an inductance of 8.360 nH and a capacitor with a capacitance of 5.942 pF, respectively. By adopting this circuit configuration, the total number of elements can be reduced to four and the loss can be reduced significantly. In addition, since the resonant circuits can be eliminated and the size of the ladder circuit can be reduced, impedance matching is achieved with a high degree of stability.

The invention discloses a night signal light detection and identification method based on color space and a selective voting mechanism. The method includes step one, positioning a signal light by using HLC color space; step two, correcting rotation offset of the signal light and a counter caused by shooting, and finding a principal direction; and step three, obtaining a projection histogram through framework extraction and projection in X and Y directions, and searching an indicator light represented by a template histogram with the highest similarity to identify through comparing the projection histogram with the template histogram; and step four, for a seven-segment display of the counter, comparing a target to be identified with a reference template in segments, and finally achieving the identification by using the voting mechanism.

The invention relates to an LED light source stability detector based on PLC control, which comprises a box body, a silicon photoelectric sensor, a conditioning circuit, a power source, an A / D converter, a connecting cable, a D / A converter, a PLC, seven segments of nixie tubes, a driving circuit and an LED light source, wherein the silicon photoelectric sensor is arranged on the box body, the silicon photoelectric sensor is connected with the conditioning circuit via conductors, the conditioning circuit is connected with the A / D converter, the electric current of the LED is regulated via detecting and analyzing the change of illumination intensity so as to realize the stability of illumination intensity, and the effectiveness of the experimental result is intuitively analyzed and judged and can be directly fed back and controlled via saving and displaying the experimental result. The invention can display the intensity change of the light source in a graphical form, and carries out real-time operation according to the change of illumination intensity, and the device has simple structure and is easy to control.

A fuse operate time test system comprises a control circuit, a feedback circuit, a microprocessor and a seven-segment display, wherein, the control circuit is used to obtain the test voltage of to-be-tested fuse; when the test voltage is higher than a preset voltage, the feedback circuit is used to generate external interrupt signal and outputs the external interrupt signal to the microprocessor through the port P12; the microprocessor is used to output high electric frequency and low electric frequency through the port P3 to switch on and switch off the control circuit, and receives the external interrupt signal generated by the feedback circuit; meanwhile, the microprocessor, which generates clock pulse and counts each clock pulse, converts the count value into a time value and outputs the time value through the port P0, the portP1 and the port P2; the seven-segment display, which is used to receive the time value output from the microprocessor, displays the operate time of the to-be-tested fuse according to the time value. The invention also provides a fuse operate time test method. With the invention, a user only needs to switch on the control circuit and completes precise test of the operate time of the to-be-tested.

The invention discloses a double control safety box unlocked by a key and inputting a password. An unlocking key is provided with a keying circuit; a conductive marble and a mechanical marble corresponding to a conductive contact and a mechanical contact of the unlocking key are arranged in a lock cylinder; a singlechip chip and a memory are arranged in the safety box; the output end of a trigger detection circuit connected with the input end of the singlechip chip is respectively connected with an unlocking electromagnet assembly and a nixie tube display; the memory stores storage the password corresponding to an unlocking key output password and an IC card emergency key password; and the keying circuit of the unlocking key is connected with the trigger detection circuit at the input end of the singlechip chip to form an unlocking key input signal circuit. The double control safety box remains a conventional unlocking form of an electronic safety box, cancels the emergency lock cylinder which has high failure rate and high potential safety hazard, substitutes a key button and a seven-segment nixie tube display for an operating button and a liquid crystal display screen, renovates the design thought of a safety box lockset, reduces the production cost of the overall safety box, and improves a safety factor of the electronic safety box.

The invention relates to an ultra-thin light-emitting diode (LED) display. The display not only can be applied to single LED, but also can be applied to seven-segment displays, LED bars, dot matrix phalanxes and other special displays with specific patterns and design.

The invention relates to a BIOS (basic input output system) debugger and a BIOS debugging method. The BIOS debugging method comprises a single chip microcomputer, an FPGA (field programmable gate array) chip, an RAM (random access memory) and two seven-segment digital tubes, wherein the FPGA chip is connected with the single chip microcomputer, the RAM and the two seven-segment digital tubes. BIOS burning data signals in a series transmission format output by a control computer is converted into the BIOS burning data signals in a parallel transmission format to be output to the FPGA chip by the single chip microcomputer. The BIOS burning data signals in the parallel transmission format is stored into the RAM by the FPGA chip, the BIOS burning data signals read in RAM 30 are converted into data signals in an SPI (serial peripheral interface) communication protocol format and then are output to a computer to be tested, so that the POST (power on self test) of the computer to be tested is conducted. The POST data signals output by the computer to be tested are also converted into two-digit hexadecimal data to be output to the two seven-segment digital tubes for displaying.

The invention provides a method of realizing hardware status indication. The structure comprises a complex programmable logic device (CPLD) and a seven-segment nixie tube, wherein one end of the CPLD is connected with status indication signals on a mainboard, the CPLD finishes collecting the induction signals on the mainboard and classify and settle the collected signals, coherent signals are encoded according to priority levels and sequential relationships, and the seven-segment nixie tube is used for receiving correlative coding and display the correlative coding. Compared with the prior art, the method of realizing the hardware status indication reduces overheads of status indication circuits in circuit designs, reduces overheads of layouts and routing resources in hardware designs, and reduces device cost at the same time.

Provided is a practical training board for single-chip microcomputer teaching. The practical training board for single-chip microcomputer teaching is open and comprises a single-chip microcomputer minimum system and a peripheral functional circuit. The single-chip microcomputer minimum system comprises a single-chip microcomputer, a first crystal oscillator circuit and a reset circuit. The peripheral functional circuit comprises an interrupt signal circuit, a buzzer circuit, a seven-segment display circuit, a first drive circuit, a second drive circuit, a keyboard circuit, a dot matrix LED display circuit and a USB program downloading circuit. The practical training board is simple, open, stable in function and not prone to breakdown or system halted or the like, meanwhile the circuits are clear at a glance, and beginners can more conveniently know and learn the single-chip microcomputer. Programs are downloaded through the USB program downloading circuit without being limited by the distance or other limitation, and the programs can be more conveniently downloaded.

The invention discloses a method and a device for detecting a front panel of a set-top box. The method comprises the following steps: receiving an infrared (IR) detection signal through an IR remote control receiver of the front panel; decoding the received IR detection signal and displaying key names on a television screen; receiving a key signal transmitted by a key of the front panel, and displaying the key name on the television screen according to the key signal; transmitting a preset digital tube detection signal and a preset LED (light emitting diode) detection signal to a plurality of seven-segment digital tubes and a plurality of LED lamps if all of the key names displayed according to the IR detection signals and key signals are correct; displaying signals by virtue of the plurality of seven-segment digital tubes according to the digital tube detection signal; and displaying signals by virtue of the plurality of LED lamps according to the LED detection signal. According to the invention, the testing result is visualized and ensures that testing personnel can be clear at a glance so as to quickly familiarize the detection operation, thereby improving the detection efficiency.

The invention discloses a neural network teaching demonstrating platform belonging to the field of teaching demonstrating platforms. The change of data such as a learning process weight is dynamically displayed through an actual hardware circuit. Photosensitive resistors are used as sensors and arranged into an identification plate by adopting a similar seven-segment display mode. A digital card is placed on the identification plate, input signals are judged according to different conditions of differential pressure sizes caused by resistance value changes after the photosensitive resistors are shielded so as to be used as samples of neutral network samples. Odd and even are judged through the neutral network self-learning. Data after learning can be stored due to the arrangement of an EEPROM (Electrically Erasable Programmable Readonly Memory), so that the data can be used in actual odd-even detection without being learned after power failure. In addition, the neural network teaching demonstrating platform is provided with an LED lamp and an LCD liquid crystal output, the change of parameters after learning every time can be more visually observed, therefore, the neutral network working principle is well known.

The invention relates to a 360-degree modulus binary-decimal converter. A rotated mechanical angle is converted into an analog angle signal having a proportional relation with the mechanical angle through an angle sensor, and the analog angle signal is converted into a parallel binary code with a weight value through an axial angle-digital converter; a decimal value input and expressed in a binary mode of a 360-degree modulus is calculated off line, and data processing is carried out to store data into a memory; and a BCD (Binary-Coded Decimal) code output by the memory is decoded by using a complex programmable logic device, and a seven-segment digital tube is driven through a driver to display and output the decoded BCD code. The binary-decimal converter with a 360-degree modulus has higher precision, higher resolution and shorter conversion time.

The invention provides an automatic positioning and recognition method for LED characters. The automatic positioning and recognition method for LED characters comprises the following steps: obtaining a LED character image, extracting the single pixel edges from the LED character image, and performing truncation processing on the single pixel edges; performing pairing on the truncated single pixel edges to obtain paired single pixel edges, wherein the paired single pixel edges corresponding to one segment of the seven segment digital tube which is used for displaying the LED characters; combinating the paired single pixel edges according to the nearest pixel distance between each pair of single pixel edges, and realizing the positioning of the character area; obtaining the brightness of each segment of the digital tube according to the paired single pixel edges of each character and the brightness between each pair of single pixel edges, and then recognizing the representing characters. According to the invention, the edge screening and the character positioning are realized by extracting the edge and analyzing the relative layout relation among the edges, therefore, the accurate character recognition can be realized.

The utility model relates to a seven-segment display apparatus, which realizes thinner apparatus while ensuring uniform brightness in all display units. The seven-segment display apparatus comprises seven light-guiding parts (402), which has optical conductivity and is configured in contraposition with a printed substrate (2), and a frame body which can shadelight. Seven containing parts configured with light-guiding configuration parts (303) of the configured with the light guiding parts are positioned in series and (402) and correspond to the guiding parts. The containing parts contain LED configuration parts (304) of LEDs. Furthermore, the frame body is configured in contraposition with a printed substrate. In a seven-segment display apparatus (1), three LED configuration parts (304) are positioned on internal sides of two frame parts, and one LED configuration part (304) is positioned on the outer side of the frame parts.

The invention relates to a traffic light control system. A dial switch is used for setting a working mode of each light in each direction, and transmitting the set data to a PLC (Programmable Logic Controller); after the PLC preprocess the set data, the PLC outputs a control signal to control the traffic lights in the east-west direction and the north-south direction; meanwhile, status indication time is displayed on seven-segment digital tube through an external decoding chip; an external button box is used as a forced signal to control input, so that the states of the traffic lights in the east-west direction and the north-south direction can be forced under special demands; direct current output by a solar photovoltaic array passes through a voltage-stabilizing module and then is supplied for the system; a storage battery pack is used as a backup power supply of the system.

This invention relates to a kind of insulator high-tension current detector of electromagnetic induction. This detector includes support insulator (1), exploring coil (2) and signal detecting circuit(3). The exploring coil built in interior of support insulator, after connect connecting terminal of support insulator's lower end, and join to signal detection circuit by signal cable. Input end of signal multiplication circuit (4) in signal detection circuit connect with connecting terminal of support insulator lower end. Output port of signal multiplication circuit connects with input end of signal identification circuit (5). Electric current indicating circuit (6) connects with output port of signal identification circuit (5). electric current indicating circuit(6) by single-chip microcomputer chip to control blazing of seven segment nixie tube to complete detecting of high tension bus bar electric current.

Provided is a double-face LED display screen of a multi-way responder. LED nixie tubes are arranged in the middle of the display screen, a circle of first indication lamps are most close to the LED nixie tubes, a circle of second indication lamps are arranged on the periphery of the first indication lamps, the height of the display screen is 370mm, the width of the display screen is 500mm, the appearances and the structures of the front face and the back face of the display screen are identical, and synchronous display on the two faces is achieved. Each LED nixie tube is a common-cathode red seven-segment nixie tube, the height of each LED nixie tube is 240mm, the width of each LED nixie tube is 120mm, and the displayed number range is 0-12. The first indication lamps are formed by connecting red LEDs in series, and the second indication lamps are flowing-water lamps formed by red LEDs, green LEDs, blue LEDs and white LEDs. The LED display screen is large in size, high in LED brightness and capable of synchronously displaying numbers on double faces, the LED display screen is provided with the colored LED flowing water lamps, the problems that an original LED display screen is not ideal in display effect and is limited in arranging position, and the function of rendering the game atmosphere is also achieved.

The invention relates to an intelligent identification lift. The intelligent identification lift comprises a programmable logic controller (PLC), a button circuit, a coder, a floor sensor, a light emitting diode memory lamp circuit, a pulse-width modulation (PWM) control speed regulation circuit, a lift car door opening-closing circuit and a seven-segment digital tube floor display circuit. The intelligent identification lift further comprises a face recognition device, wherein the button circuit is connected with the face recognition device through the coder, the face recognition device and the floor sensor are respectively connected with an input end of the PLC, and an output end of the PLC is connected with the lift car door opening-closing circuit, the light emitting diode memory lamp circuit, the PWM control speed regulation circuit and the seven-segment digital tube floor display circuit. The intelligent identification lift can automatically identifies that no one waits outside a floor, even though someone presses a button, the lift does not stop at the floor, and thus intelligent identification lift effectively saves the operating time of the lift, and is energy-saving and time-saving.

A cloud coin slot device includes a panel device, a processor, a memory, and a transceiver. The panel device includes a screen, a plurality of seven-segment displays, a plurality of control keys, and an enter key. The screen is used for displaying an identifier image. The plurality of seven-segment displays is used for displaying a payment value. The plurality of control keys is used for inputting the payment value. The enter key is used for confirming the payment value. The processor is coupled to the panel device for processing payment data. The memory is coupled to the processor for saving data of a payment program. The transceiver is coupled to the processor for receiving the payment data transmitted from a server.

The present invention discloses current detecting device and method superior to available technology, which can show the voltage of CPU only. The current detecting device and method of the present invention can also show the load current of CPU definitely with LEDí»s, seven-segment display or display screen.

The invention discloses a method and a system for identifying a seven-segment nixie tube liquid crystal display screen based on deep learning. The method comprises the following steps of: (1) preprocessing an identified image: carrying out a series of operations such as normalization, graying, Gaussian filtering, adaptive threshold segmentation and image denoising on an input image; (2) positioning operation of seven sections of nixie tubes in the liquid crystal display screen: performing regional positioning on the nixie tubes in the liquid crystal display screen by using YOLOv3; (3) image enhancement operation: carrying out corrosion and expansion operation on the image to reduce interference areas in the image, enable front and back backgrounds to be more separated and eliminate holes between nixie tubes; and (4) image identification operation: carrying out numeric character segmentation operation on the processed region of interest, independently segmenting each number into a picture, and then carrying out identification by using a threading method. According to the invention, related contents in the seven-segment nixie tube liquid crystal display screen can be read more accurately.