31 results about "Dot-matrix display" patented technology

The invention discloses a dot matrix display character recognition method based on color features, and the method comprises the steps: S1, receiving an original image and a region of interest as input, and removing non-target pixels in the image through background filtering; s2, the filtered effective pixels are sent to a K-Means clustering algorithm for color quantization, and main color clusters in the image are automatically summarized; s3, in a color measurement matching stage, determining a target color representing a character foreground by calculating the Euclidean distance between the center of each color cluster and a preset target color in an RGB space; and S4, performing foreground mask reconstruction based on a matching result, generating a binary image only containing target character pixels, and sending the binary image to a standard OCR engine for final character recognition. According to the method, target color characters can be effectively isolated, background interference is reduced, and a foreground mask with high contrast and high fidelity is finally generated for a subsequent OCR engine to use.

The invention provides a traffic road ghost probe warning lamp, and relates to the technical field of traffic signals. The warning lamp comprises a detection device, a warning device and a control device. The detection device comprises at least two groups of laser correlation sensors, an ultrasonic distance measuring sensor and a networking monitoring camera, and is used for detecting approaching conditions of pedestrians, non-motor vehicles and vehicles at an intersection. The warning device comprises an LED lamp strip, a full-color LED dot matrix display screen and a motor vehicle display screen and is used for carrying out real-time early warning on passing vehicles and pedestrians. The control device comprises a control circuit board and a power management circuit. According to the invention, through a plurality of sensor fusion technologies, accurate detection of pedestrians and vehicles at the intersection is realized, and real-time early warning is carried out on passing vehicles and pedestrians by using the LED lamp strip and the display screen, so that traffic accidents caused by a ghost probe phenomenon are effectively prevented, the safety and traffic efficiency of the traffic intersection are improved, and accident risks are reduced.

The utility model discloses a LED dot matrix display light-emitting support lamp, including handheld part and the lamp body part of installing at the top of handheld part, the handheld part includes handle outer cover and installs two groups of symmetrical handle inner lining of setting in handle outer cover inside and is composed, handle inner lining top side wall is provided with internal thread, the lamp body part includes two groups of half spherical transparent cover of clamping connection, two groups half spherical transparent cover bottom are provided with external thread and are connected through the thread with handle inner lining, install the support and luminous body in the lamp body, support bottom is installed with PCB board no.

The invention discloses a Chinese character braille conversion method and system oriented to embedded equipment. The method comprises the following steps: firstly, linearly storing a Chinese character pinyin library according to a GB2312 coding sequence, wherein each Chinese character pinyin data record adopts a fixed-length L byte; secondly, analyzing an area code byte Qh and a bit number byte Q1 from the GB2312 code; calculating a physical offset address of the Chinese character pinyin data according to the area code byte Qh and the bit number byte Q1, and adding the physical offset address with the initial physical address to obtain a final physical address; directly reading the Chinese character pinyin data with the fixed length of L from the final physical address; and finally, converting the Chinese character pinyin data into 6-bit braille codes, converting the 6-bit braille codes into 8-bit data through bit splicing and regrouping, and outputting the 8-bit data to an 8-bit data latch to drive braille dot matrix display. According to the method, traversal searching is replaced by direct address calculation, the algorithm time complexity is improved, and the method is suitable for an embedded environment and has the advantages of being high in efficiency and low in resource occupation.

The utility model relates to the technical field of braille dot matrixes, in particular to a braille dot matrix display device with a self-locking function. A braille dot matrix display device with a self-locking function comprises a base, a middle shell and the like, the top of the base is fixedly connected with the middle shell, the top of the middle shell is fixedly connected with a top cover, six contact blocks are slidably arranged on the top cover at intervals, six electromagnet assemblies are evenly arranged in the base, and jacking assemblies are arranged in the six electromagnet assemblies. The six jacking assemblies correspond to the six contact blocks respectively. According to the utility model, the permanent magnet and the ejector pin move up and down by controlling the current direction so as to drive the contact block to ascend and descend, and self-locking is realized when the contact block ascends to the highest position or descends to the lowest position by utilizing the interaction of the steel ball, the iron core and the ejector pin, so that the problem that most braille display devices are difficult to realize dot matrix self-locking is solved, and the heating value is effectively reduced; stable touch force feedback is provided for a user, and the reading requirements of visually impaired people are better met.

Provided is a sensor unit that simultaneously displays a threshold value and a physical quantity as well as other information. The sensor unit causes the dot matrix display unit to display a threshold value and a physical quantity in a first display form, and causes the dot matrix display unit to display the physical quantity, the threshold value, and additional information different from the physical quantity and different from the threshold value in a second display form (e.g., a power mode). The area of the third display region (303) for the threshold value in the second display form is smaller than the area of the second display region (302) for the threshold value in the first display form. The area of a fourth display area (304) for information in the second display form is obtained by reducing the area of the second display area (302).

The utility model provides a bicycle tail lamp capable of displaying tire pressure warning, and relates to the technical field of bicycle tire pressure monitoring, the bicycle tail lamp comprises a bicycle main body, a warning display tail lamp structure and two tire pressure detection assemblies, the bicycle main body comprises a bicycle frame, a seat connecting rod, a front tire and a rear tire, the two tire pressure detection assemblies are installed at the positions of a front tire and a rear tire of the bicycle body, the tire pressure detection assemblies are used for detecting air pressure in the tires in real time and transmitting detection results to the warning display tail lamp structure for real-time display flickering, and through the design of the warning display tail lamp structure and the two tire pressure detection assemblies, the tire pressure in the tires can be detected in real time. The tire pressure warning system integrated in the bicycle tail lamp (warning display tail lamp structure) can monitor the tire pressure in real time, and when the tire pressure is abnormal, the system can immediately trigger the warning and display functions of the tail lamp (color dot matrix display screen) no matter the tire pressure is too high or too low.

The invention relates to the technical field of timing display, and discloses a multi-user visual sauna timing display system, which comprises an event detection module used for receiving a user entry event, a confirmation event, a switching event and a release event; the session management module is used for generating a user session when a user entry event is received, and establishing a binding relationship between the user session and an unoccupied session display unit; the timing module is used for timing the user session when the user session is in a running state; the dot matrix display module is used for displaying dot matrix display contents related to corresponding user sessions in a plurality of session display units; and the control module is used for executing setting of the session display unit and switching of the identification display unit. The display content is updated according to the real-time timing information through the user session management and timing module, so that the common problem of timing confusion or information loss during use by multiple persons is avoided.

The utility model provides a tunnel traffic accident front-end driving safety grading early warning management and control system. A grading early warning subsystem comprises a first-level early warning area, a second-level early warning area, a forbidden area, a continuous forbidden area and a hole opening warning area. Early warning devices are arranged on the two sides of each area respectively, each early warning device comprises a dot matrix display module, a red strobe light and a blue strobe light, the red strobe light and the blue strobe light are arranged on the upper portion of the dot matrix display module, and each early warning device is further internally provided with a controller, a power module, a voice broadcast module and a wireless communication module; and the controller is electrically connected with the wireless communication module, the red flashing light, the blue flashing light, the voice broadcast module, the dot matrix display module and the power supply module. According to the utility model, a sensing technology and a wireless communication technology are adopted to monitor whether an accident occurs in the tunnel, and when the accident occurs, acousto-optic and display alarm can be carried out at the first time through the grading warning device at the tunnel portal, so that external vehicles are prevented from further driving into the tunnel, secondary accidents are avoided, and more accurate technical support is provided for tunnel safety management.

The application relates to the technical field of protective shells, and provides a dot matrix display circuit structure, a display control method and an intelligent protective shell.The dot matrix display circuit structure comprises a circuit board, a plurality of light-emitting lamp beads, a main control chip and control chips of the light-emitting lamp beads.The plurality of light-emitting lamp beads are arranged in a dot matrix mode on the circuit board, and the plurality of light-emitting lamp beads are sequentially connected to form a serial path, each light-emitting lamp bead comprises a control chip and a light-emitting chip, the main control chip is electrically connected to the serial path, and is used for sending a control signal to the serial path, and the control chip of each light-emitting lamp bead is used for acquiring a control signal matched with the light-emitting chip to control the light-emitting chip to emit light or pass the control signal not matched with the light-emitting chip.The technical problem that a large current needs to be used to drive light-emitting in a scanning control mode in the prior art, which leads to unstable work of components, causes electromagnetic interference and generates a large amount of heat is solved.

The application provides a dot matrix LED display control circuit, method and display module, and relates to the technical field of display. The dot matrix LED display control circuit comprises a plurality of column drive circuits, a plurality of row scanning drive circuits, a voltage-controlled frequency modulation output circuit and a controller; the controller is connected with one end of a plurality of columns of LEDs in the display through the plurality of column drive circuits; the controller is connected with the plurality of row scanning drive circuits through the voltage-controlled frequency modulation output circuit, so that the voltage-controlled frequency modulation output circuit outputs waveform signals with frequencies corresponding to voltage signals output by the controller to the plurality of row scanning drive circuits; and the plurality of row scanning drive circuits are connected with the other end of a plurality of rows of LEDs in the display, so that a target row scanning drive circuit provides a high-level signal to one end of a target row of LEDs. The selective row scanning is realized without starting from the first row and scanning row by row from top to bottom, and the local display refresh frequency of the display is dynamically improved.

The utility model relates to an electronic circuit and display technology, and discloses an LED dot matrix display control device with a protective structure, which comprises a protective cover, the outer wall of the protective cover is fixedly connected with a mounting foot, the inner wall of the mounting foot is in sliding connection with a mounting rod, the inner wall of the mounting rod is fixedly connected with a mounting column, and the mounting column is fixedly connected with the outer wall of the protective cover. A plurality of reset springs are fixedly connected to the outer wall of the mounting column, limiting balls are fixedly connected to the other ends of the reset springs, a mounting plate is slidably connected to the outer wall of the mounting rod, a plurality of mounting holes are formed in the inner wall of the mounting plate, and a heat dissipation assembly used for heat dissipation is arranged on the inner wall of the protective cover. The heat dissipation assembly comprises a fan fixing plate. According to the utility model, the protective cover is fixed on the mounting plate by using a detachable structure, so that the protective cover can be quickly detached while protecting internal electronic components, and workers can timely overhaul the internal electronic components.

A dot matrix display and a preparation method therefor. The dot matrix display (10) comprises: an insulating substrate (11), a plurality of light-emitting units (12), a plurality of first encapsulants (13), a first light-shielding layer (14), a plurality of second encapsulants (15), and a second light-shielding layer (16). The plurality of light-emitting units (12) are provided on the insulating substrate (11) and are arranged in a matrix. Each first encapsulant (13) correspondingly encapsulates the outside of each light-emitting unit (12). The first light-shielding layer (14) is provided on the insulating substrate (11) and comprises a plurality of first through holes (141), and the first encapsulants (13) are located in the first through holes (141) of the first light-shielding layer (14). The second light-shielding layer (16) is provided on the first light-shielding layer (14) and comprises a plurality of second through holes (161), and each second encapsulant (15) encapsulates each first encapsulant (13) and is located in a second through hole (161) of the second light-shielding layer (16).

The invention relates to a medical instrument applied to hand rehabilitation training, and belongs to the technical field of medical rehabilitation equipment. The instrument comprises a hand posture module, an embedded gyroscope of the hand posture module can monitor the angle of hand movement, the hand posture module has adjustable spring resistance and accords with ergonomics design, a dot matrix display module is a matrix screen composed of RGB LEDs, and a music control module can play specified voice files according to needs. The precise rehabilitation training for the patient with the hand function injury is realized. The PC program of the upper computer realizes real-time monitoring of position and force and dynamic control of the lattice screen, and provides personalized training schemes according to different injury conditions of patients. The device is simple in structure and comfortable to use, control software is convenient to operate, the device is widely suitable for rehabilitation training of stroke and other hand injury patients, and the problems that a traditional rehabilitation means is long in rehabilitation period, poor in effect, high in cost and the like are solved.

This invention relates to a holographic user interface module and a bathroom system including the module, wherein the bathroom system may include bathroom fixtures (such as sinks, faucets, and toilets) and the holographic user interface module. The module can be used to control the operation of the bathroom fixtures. The module may include a printed circuit board assembly (PCBA), a display screen (such as a liquid crystal display (LCD), projector, dot matrix display, light-emitting diode (LED), etc.) connected to the PCBA, a holographic 3D panel, and an infrared touch strip. When light is emitted from the display screen, the light can be guided to the holographic 3D panel, and the holographic 3D panel can convert the light into a screen image. The infrared touch strip can analyze the user's activation of the screen image and control the bathroom fixtures based on the activation of the screen image.

The invention relates to the technical field of home appliance assembly, in particular to an LED dot matrix display screen and a refrigeration home appliance, the LED dot matrix display screen comprises a large frame and a small frame fixedly connected in the large frame, a display screen body is arranged in the small frame, the LED dot matrix display screen further comprises a movable frame, a first connecting rod is fixedly connected in the movable frame, and a second connecting rod is fixedly connected in the movable frame. The first connecting rod is rotationally connected with the inner wall of the small frame, the display screen body is slidably connected to the top end of the movable frame, a wireless storage battery is installed on the outer side of the movable frame and used for providing power for the display screen body, and a first arc spring is fixedly connected between the inner wall of the movable frame and the inner wall of the small frame. Through the structural design of the clamping mechanism and the clamping groove, the display screen body is rapidly fixed and disassembled, locking can be unlocked by moving the clamping mechanism, the movable frame automatically inclines and rotates under the action of the first arc-shaped spring, the display screen body is easy to take out, tools are not needed, operation is easy and convenient, and the disassembly, assembly and maintenance efficiency is remarkably improved.

The embodiment of the invention provides a fan, an air conditioner, a control method of the air conditioner and a computer readable storage medium, the fan comprises a wind wheel, a motor, a control circuit board and a display circuit board, the wind wheel is provided with fan blades, the motor is used for driving the wind wheel to rotate, the control circuit board is installed on the motor, and the display circuit board is electrically connected with the control circuit board. The display circuit board is integrated on the fan blades and is provided with a plurality of LED light sources; when the motor rotates, the motor drives the wind wheel, the control circuit board and the display circuit board to rotate synchronously, and the control circuit board is used for controlling the LED light source to display target display information during rotation. Firstly, after the display circuit board rotates along with the wind wheel, fixed character display of the display area is changed into dot matrix display, and the richness of display content can be better improved on the premise of low cost; in addition, the display circuit board becomes a part of the wind wheel, the loss of the wind quantity is avoided, and the problem that the position of an existing display board affects return air is solved.

The utility model discloses a portable low-lying area water level warning indicator which comprises a bearing main rod and a bearing auxiliary rod, the bearing main rod and the bearing auxiliary rod are hinged to each other through a stand column base, a waterproof stand column is arranged at the top of the stand column base through a swing limiting mechanism, and a plurality of non-contact liquid level sensors are arranged in the waterproof stand column. One side of the top end of the waterproof stand column is connected with an LED dot matrix display screen through a rotating holder, and a reinforcing assembly is further arranged between the bearing main rod and the bearing auxiliary rod. When the water level warning indicator is unfolded and placed in a wading level, the non-contact liquid level sensor senses the water level height of accumulated water so that a signal can be fed back to the LED dot matrix display screen, the water level height value of the accumulated water at the moment can be automatically displayed in the LED dot matrix display screen, and therefore the wading depth of a driving vehicle can be warned; therefore, the occurrence of serious accidents of vehicle wading and anchoring caused by the misestimated water level and even vehicle destruction and people death caused by the fact that the vehicle is untrapped due to the fact that the vehicle is anchored and cannot get out of water subsequently can be reduced.

The utility model relates to the technical field of full-color light-emitting diode (LED) display, in particular to a full-color dot matrix display screen, which comprises a lamp panel, a light shielding plate, a light mixing plate, an outer lens and a shell, the outer lens is fixed at the front part of the shell and forms an inner cavity, and the full-color dot matrix display screen is characterized in that the lamp panel, the light shielding plate and the light mixing plate are sequentially and correspondingly fixed in the inner cavity from back to front; the light mixing prism is scientific in design, reasonable in structure and safe and reliable in function, through light diffusion of the light mixing prism, large-angle refraction is conducted on RGB three-color light, the three-color light in any proportion is evenly mixed, rich colored light is generated, colorful dot matrix display is achieved, the effect is ideal, and the manufacturing cost is not high.

The invention provides a sensor system capable of improving usefulness of a display. A sensor system (1) includes: a sensor head (10) that detects a physical quantity; and a sensor amplifier (20) that is connected to the sensor head, receives a physical quantity detected by the sensor head, and outputs the physical quantity to an external device, the sensor system (1) being provided with: an error detection unit that detects each of a plurality of errors generated in the sensor head and the sensor amplifier; a storage unit that stores response methods corresponding to each of the plurality of errors; a dot matrix display (23a) that displays a screen; and a screen generation unit that generates a screen to be displayed on the dot matrix display, the screen generation unit generates an error notification screen on the basis of the error detected by the error detection unit, and reads out a coping method corresponding to the error detected by the error detection unit from the storage unit to generate a coping method screen.

The application provides a dot matrix display device based on an electrochromic material and a control method thereof, which comprises a substrate layer, a conductive layer, a control unit, an output circuit, a switch and a power supply; wherein the substrate layer is located at the bottom of the device and is used for providing support for the device; the conductive layer comprises, from bottom to top, a transparent conductive layer, an electrochromic material layer, an electrolyte gel, a transparent conductive film encapsulated on the surface of the electrolyte gel and a flexible transparent conductive film; the output circuit is connected to the substrate layer and the conductive layer; and the control unit controls the on-off of the output circuit and the conductive layer to realize display of the display device; wherein the transparent conductive film is provided with a plurality of electromagnets, the flexible transparent conductive film is provided with magnetic contacts, and a gap is arranged between the two. The application realizes dot matrix control display on a large-area electrochromic device and realizes the effect of rapid pattern display. In addition, the application can realize the functions of handwriting and electric control display, has a simple structure, low preparation cost and high reliability.

The invention relates to the technical field of image processing, and discloses a display method, electronic equipment, a storage medium and a program product. In the method, after the electronic equipment detects a first operation, a first image including a first area is displayed at a first moment, and a first dot matrix is displayed in the first area. Then, a second image including a first area and a second area is displayed at a second moment, the second area displays a second dot matrix at the second moment, and the first area displays a third dot matrix at the second moment. The second moment is after the first moment, the second area surrounds the periphery of the first area, the first dot matrix and the second dot matrix belong to a first dot matrix category, and the third dot matrix belongs to a second dot matrix category. In the method, the electronic equipment can display two different types of dot matrixes at the same time, compared with a mode of only displaying a single type of dot matrixes (such as uniform dot matrixes), the types of the dot matrixes displayed in the method are richer, and the interactive experience feeling between a user and the electronic equipment is enhanced.

The utility model relates to the field of display, in particular to an intelligent robot head display module which comprises an installation groove formed in a robot body, a control panel electrically communicated with a robot power supply part is installed at the bottom of the installation groove, and a display screen is matched with a groove opening of the installation groove. A dot matrix display module used for displaying expressions and characters is pasted on the inner side of the display screen, the dot matrix display module is electrically communicated with the control panel through a connecting plug, the dot matrix display module is an LED lamp bead display module, and the distance between LED lamp beads forming a dot matrix is not smaller than 0.8 mm. The dot matrix display module is arranged on the inner side of the display screen, required simple expressions or characters are displayed through the display module formed by the dot matrix LED lamp beads, the display requirement of a hotel or catering robot is met, and therefore the cost of the robot on the screen can be greatly reduced.

The utility model discloses a segment code display panel and an electronic paper display device, and relates to the technical field of display. The segment code display panel comprises a base material, a first electrode and a second electrode, the circuit layer is arranged on the base material; the insulating layer is arranged on one side, far away from the base material, of the circuit layer; the via hole is formed in the insulating layer; and the pattern layer is arranged on one side, far away from the circuit layer, of the insulating layer. The EPD dot matrix display module solves the problems that an existing EPD dot matrix display module is usually made of a TFT glass substrate, and due to the fact that display patterns of a segment code pattern type EDP display module are generally complex, complex punching and wiring need to be carried out on the substrate; and the glass substrate basically cannot meet the punching and wiring requirements, so that the problem that the glass substrate cannot be used for manufacturing a relatively complicated EPD segment code display screen module exists.

The present disclosure relates to a display control method, a display control device and a storage medium, which input grayscale data into a Mini LED driving chip through SPI, control a Mini LED dot matrix to display a pattern mapped by the grayscale data, so as to meet the requirements of smoothness and transmission speed of the Mini LED dot matrix display.

Provided is a display device that makes a desired pattern or the like visible in the non-display state and is capable of displaying a display image without allowing perception of the complementary color of the color of the pattern or the like. The display device includes: a dot matrix display panel; and a design layer disposed in front of a front surface side of the display panel. The design layer includes a design part that includes a binder resin and light-reflective colored particles dispersed in the binder resin. The light-reflective colored particles reflect light having a specific wavelength while absorbing light having a wavelength other than the specific wavelength.

Provision of a sensor system that can increase the usefulness of display devices. A sensor system 1 includes a sensor head 10, which detects physical quantities, and a sensor amplifier 20, which is connected to the sensor head and receives physical quantities detected by the sensor head and outputs them to an external device, and comprises a fault detection section, which detects several faults originating in the sensor head and sensor amplifier respectively, a memory section, which stores corrective actions for each of the several faults, a dot matrix display device 23a, which displays images, and an image generation section, which generates images for display by means of the dot matrix display device, wherein the image generation section generates a fault message image based on a fault detected by the fault detection section, reads a corrective action corresponding to the fault detected by the fault detection section from the memory section, and generates an image with corrective actions.

The invention provides an HUD image correction method, electronic equipment and a storage medium, and relates to the technical field of HUD. The method comprises the following steps: displaying a standard lattice diagram through an HUD according to a distortion calibration instruction, and shooting the standard lattice diagram displayed by the HUD by adopting a preset camera to obtain a to-be-corrected image; detecting the to-be-corrected image by adopting a bright spot area detection technology, and identifying each bright spot area in the to-be-corrected image; obtaining attribute parameters of each bright spot area, and filtering ghosting points in the initial detection point set according to the attribute parameters of each bright spot area to obtain a main detection point set; according to the main detection point set and the standard lattice diagram, the target distortion table is determined, the accurate target distortion table can be obtained by filtering out ghosting points, and therefore when image correction is carried out based on the target distortion table, the image display quality of the HUD can be enhanced, and the driving safety can be improved.

This application provides a display system for a cleaning robot and a cleaning robot in general. The display system includes a processor and a display panel in the cleaning robot. The display panel includes a microcontroller and a dot matrix display board. The processor is connected to the microcontroller, and the microcontroller is connected to the dot matrix display board. The dot matrix display board is positioned on the front of the cleaning robot and faces the same direction as the robot's movement. The processor determines the dot matrix display data corresponding to the information to be displayed and sends the dot matrix display data to the microcontroller. The microcontroller sends the dot matrix display data to the dot matrix display board, causing the dot matrix display board to display the information to be displayed. This allows the rendering task of displaying information to be transferred from the microcontroller to other devices. The microcontroller does not need an external high-capacity storage chip, reducing the performance requirements of the microcontroller, lowering embedded hardware costs and manual maintenance costs, supporting richer display information and displaying it to surrounding users, and improving the human-computer interaction effect of the cleaning robot.

The invention discloses an intelligent mobile phone with a pixel style back screen interaction function, and aims to solve the problem that the back screen interaction form of an existing mobile phone is single. A dot matrix lamp effect module (3) is additionally arranged beside a rear cover camera module (2) of a mobile phone (1), the dot matrix lamp effect module (3) is composed of 12 * 12 matrix ultrathin flip wafer RGB LEDs, a circuit board (11), a light source partition layer (12), a light source diffusion film (13) and a semi-transparent cover plate (14), and the overall thickness is controlled within 2.0 mm; a simplified circuit scheme of a control unit and a special driving unit is adopted in the dot matrix lamp effect module (3), and the dot matrix lamp effect module (3) is used for receiving an instruction of the mobile phone control unit and driving an LED dot matrix to display characters, game animations or custom contents in a pixel style; through an innovative hardware structure, interaction combination with software can be realized, and personalized display and interesting interaction experience of the back screen of the mobile phone are greatly enriched.