Audible and visual alarm device for display and control console

Abstract

An audible and visual alarm device for a display and control console comprises a master control circuit, a network circuit, a voice circuit, an LCD screen circuit and a backlight circuit. The device can inform a user of detailed fault information in an obvious manner through intelligent voice and screen display, so that the response speed of personnel is effectively improved, the troubleshooting time is shortened, the working efficiency is improved, and the labor cost is saved.

Description

Technical Field

[0001] The invention relates to the field of computer technology, and in particular to an audible and visual alarm device for a display and control console. Background Art

[0002] As one of the main embedded modules of the military display and control console, the sound and light alarm device is used to issue an alarm when sensors, level gauges or other valves detect abnormal liquid levels, pressure differences, temperatures, etc. inside the ship or cabin.

[0003] However, traditional modules can only make a beeping sound, and it is necessary to manually troubleshoot the specific cause of the fault. At the same time, when troubleshooting at night, since the module cannot automatically adjust the brightness, it often causes eye discomfort due to the high brightness of the screen, and the brightness needs to be manually adjusted to adapt to the eyes. It is not intelligent and user-friendly. Summary of the invention

[0004] The present disclosure provides an audio-visual alarm device for a display and control console, which is used to prompt corresponding fault information through different sounds when abnormalities such as liquid level, pressure difference or temperature occur in the system, and to display specific alarm information on the LCD screen of the device, and to prompt the user for subsequent operations; at the same time, in order to ensure a better user experience at night and in a dark environment in a specific cabin, a backlight function is added to the embedded module of the display and control console, and the audio-visual alarm indicator screen can automatically adjust the screen display brightness according to the ambient light to prevent the user from seeing glare in a dark environment.

[0005] The display console sound and light alarm device provided by the present disclosure mainly includes: a main control circuit, a network circuit, a voice circuit, an LCD screen circuit and a backlight circuit, wherein:

[0006] LCD screen circuit, used to obtain alarm information from MCU in the main control circuit and display it on the LCD screen;

[0007] The voice circuit is used to save preset voice files and control the playback of different voices according to user requirements;

[0008] Backlight circuit, used to control LCD screen backlight and adjust screen brightness;

[0009] Network circuit, used for two-way data transmission between the main control MCU and the host computer.

[0010] Furthermore, the main control MCU adopts the GD32F4 series;

[0011] The network circuit uses a single-port 100M network chip as the PHY chip.

[0012] Furthermore, the voice circuit uses a WT588S voice chip and uses a two-wire serial port to achieve communication between the voice chip and the MCU;

[0013] Under the control of the MCU, the voice chip searches for pre-stored voice information from the specified address, uses PWM wave output to drive the peripheral speaker to sound, and plays the corresponding voice prompt information.

[0014] Furthermore, the voice circuit controls the volume of the sound by:

[0015] The volume of the speaker sound can be adjusted by adjusting the different duty cycles of PWM;

[0016] The specific voice volume is stored in the memory.

[0017] Furthermore, the LCD screen communicates with the MCU via SPI to obtain and display the alarm information;

[0018] Among them, DMA is used to transfer data directly from memory to SPI peripherals in batches to increase the refresh rate of the LCD screen;

[0019] In addition, a combination of data segment transmission and data verification is adopted to ensure the accuracy of data at each stage.

[0020] Furthermore, the backlight circuit adjusts the screen brightness in the following ways:

[0021] Adopting photosensor, which is sensitive to the brightness of surrounding ambient light, to realize automatic adjustment of LCD screen brightness;

[0022] Manually adjust the screen brightness.

[0023] Compared with the prior art, the beneficial effects of the present invention are: (1) the user is informed of detailed fault information in an obvious manner through intelligent voice and combined screen display; (2) the DMA method is used for data transmission to improve the screen refresh efficiency, and the segmented transmission + data verification is used to improve the accuracy of data transmission; (3) the brightness of the light-emitting components is intelligently adjusted to protect the user's eye comfort and facilitate user operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The above and other objects, features and advantages of the present disclosure will become more apparent through a more detailed description of exemplary embodiments of the present disclosure in conjunction with the accompanying drawings, wherein like reference numerals generally represent like components throughout the exemplary embodiments of the present disclosure.

[0025] Figure 1 Schematic diagram of the overall appearance structure of an exemplary embodiment according to the present disclosure; in the figure, 1 represents an LCD display screen, 2 represents a speaker, and 3 represents a photosensitive sensor;

[0026] Figure 2 It is a schematic diagram of the structural principle of an exemplary embodiment;

[0027] Figure 3 This is the workflow diagram of the speech module. DETAILED DESCRIPTION

[0028] The preferred embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to make the present disclosure more thorough and complete, and to fully convey the scope of the present disclosure to those skilled in the art.

[0029] The present disclosure provides an audible and visual alarm device for a display console. According to an exemplary embodiment of the present disclosure, the appearance structure is as shown in the attached figure. Figure 1 The principle structure is shown in the attached Figure 2 As shown, it includes: main control circuit, network circuit, voice circuit, LCD screen circuit and backlight circuit.

[0030] 1. Main control circuit

[0031] As a priority, the main control MCU in this embodiment selects the GD32F4 series. The circuit design takes into account the filtering and decoupling of the power supply. It is necessary to select suitable power chips and capacitors and design appropriate power circuits; select suitable external clocks, resets, JTAG debugging and peripheral interfaces according to the communication rate requirements.

[0032] In this embodiment, the power is supplied by a DC+12V power supply, and the power conversion circuit converts +12V into the voltage required by each circuit and device; the main control chip collects specific control data of the peripheral user in real time through network interruption, and performs specific operations on different components.

[0033] 2. Network circuit

[0034] In order to meet the requirements of localization and network communication interface, in this embodiment, the Yutaiwei YT8512H single-port 100M network chip is preferably used as the PHY chip. The two-way data transmission between the chip and the host computer follows the Ethernet communication protocol.

[0035] 3. Voice circuit

[0036] The voice circuit preferably uses the WT588S voice chip, uses a two-wire serial port to realize communication between the MCU and the voice chip, and uses PWM wave output to directly drive the peripheral speaker to produce sound.

[0037] Users can also record corresponding audio files and create BIN files as needed, and download them to the Flash of the chip through the host computer.

[0038] An exemplary flow chart of the voice circuit operation is shown in the attached figure. Figure 3 shown.

[0039] After receiving the user's voice request, the MCU main control controls the voice chip through SPI to search for specific voice information at a specific address, and then uses PWM to adjust the speaker's sound volume through different duty cycles to play the corresponding voice prompt information.

[0040] According to the user's specific usage needs, the specific voice volume can be stored in the memory, so that the user does not need to adjust the volume manually the next time.

[0041] 4. LCD screen circuit

[0042] The LCD communicates with the MCU via SPI to drive the normal operation of the LCD and the backlight. It can control the display of monochrome backgrounds, pictures, and texts, and can adjust the brightness of the LCD screen based on peripheral dimming.

[0043] 5. Backlight circuit

[0044] By using a light-sensitive sensor, the brightness of the luminous part of the device can be controlled according to the ambient light, so that the human eye has a better viewing experience;

[0045] Users can also manually adjust the brightness of the luminous parts to achieve the best viewing experience and the most comfortable state for users.

[0046] 6. Software Design

[0047] This embodiment mainly realizes driving the network chip to operate normally, driving the LCD screen to operate normally, and driving the voice chip to sound normally under the Keil uvision5 environment.

[0048] Driver network chip:

[0049] (1) The lwip protocol needs to be ported to the environment corresponding to the GD32F4 series to ensure that the network works according to the Ethernet communication protocol.

[0050] (2) First, the system clock needs to be obtained, and then the PHY control interface needs to be divided accordingly; then, the software resets the PHY chip, writes 1 to the highest bit of register 0 + delays for a long period of time; finally, the register is configured by reading the corresponding bit status of the register. Note that a certain delay is required after each register configuration, otherwise a bus fault may occur.

[0051] Driving LCD:

[0052] To drive the LCD screen to work properly, we need to light up the screen, that is, have a backlight, and also realize communication between the screen and the MCU.

[0053] First, you need to configure the MCU SPI pins corresponding to the LCD and initialize the GPIO pins; then reset the chip and reinitialize the device; then you need to turn on the backlight switch to facilitate subsequent dimming control; then perform the initialization sequence to achieve shutdown and sleep, enter the working state, set display parameters and color parameters, and perform various operations such as memory reading and writing.

[0054] After the above configuration is completed, the LCD screen can be driven to work normally. Subsequently, the screen can be operated to control the display of pictures, colors and texts.

[0055] Driver voice chip:

[0056] To drive the voice chip to sound normally, you need to configure the SPI serial port communication parameters, and then the user configures the specific address and specific voice to be written according to the needs, and enters the voice information into the corresponding address. The user controls the playback of different voices according to the actual usage requirements.

[0057] 7. Key technical issues to be addressed

[0058] (1) LCD refresh rate

[0059] The LCD screen of this module is driven by SPI, which is a serial communication interface. Since SPI itself has a slow communication rate, and the communication rate of the selected LCD screen has specific requirements, too high SPI rate will cause data packet loss, so the LCD refresh rate is very slow.

[0060] Therefore, in this embodiment, a DMA-based data transfer method is adopted to improve the refresh rate of SPI, so that data does not pass through the CPU and is directly transferred from the data register to the peripheral device, thereby reducing the burden on the CPU and improving the refresh rate of the LCD screen.

[0061] (2) LCD display abnormality

[0062] The host computer downloads the image information through the network, the MCU receives it through the network, temporarily stores the data in the SDRAM, and then burns the data into the LCD internal memory through the SPI communication method, and then reads the image information and displays it on the corresponding LCD screen. There are many communication methods and data processing times from the host computer image download to the LCD display. If an error occurs in any link, it will cause the LCD display to be abnormal, and it is difficult to locate the abnormality.

[0063] Therefore, this embodiment adopts a method of combining data segment transmission and data verification to ensure the accuracy of data in each stage.

[0064] The specific process example is as follows:

[0065] When the main control chip detects that the user needs to download a picture to the LCD screen, it needs to be prepared for receiving. After all data and verification are correct, the MCU host initiates a burning request, and at this time gives the number of the picture to be burned (indicating its storage location in the button). The entire burning process is coordinated and completed synchronously by the host and the slave. The burning of a picture is divided into 4 parts: the burning picture attribute segment, picture data segment 1, picture data segment 2, and picture data segment 3 are transmitted in sequence. During the transmission process of a certain segment, if an error occurs (such as a transmission verification error), the segment will be retransmitted. Each segment is transmitted 3 times, otherwise the task transmission fails and the burning is terminated. After all segments are successfully transmitted and burned, it means that the picture burning is completed. At this time, the host sends a "transmission end notification" to the slave to end the burning. After the burning is completed normally, the corresponding picture will be displayed on the corresponding screen, which is convenient for users to observe the correctness of their operations in real time. The software can also control the logic to display different background and character information on different LCD buttons, which is convenient for users to update the screen in time according to the changes in the field data, so that users can better obtain specific fault information in time.

[0066] The above technical scheme is only an exemplary embodiment of the present invention. For those skilled in the art, it is easy to make various types of improvements or modifications based on the application methods and principles disclosed in the present invention, and it is not limited to the method described in the above specific embodiment of the present invention. Therefore, the method described above is only preferred and does not have a restrictive meaning.

Claims

1. A sound and light alarm device for a display and control console, characterized in that: include: Main control circuit, network circuit, voice circuit, LCD screen circuit and backlight circuit, including: LCD screen circuit, used to obtain alarm information from MCU in the main control circuit and display it on the LCD screen; The voice circuit is used to save preset voice files and control the playback of different voices according to user requirements; Backlight circuit, used to control LCD screen backlight and adjust screen brightness; Network circuit, used for two-way data transmission between the main control MCU and the host computer.

2. The device according to claim 1, characterized in that: The main control MCU adopts GD32F4 series; The network circuit uses a single-port 100M network chip as the PHY chip.

3. The device according to claim 1 or 2, characterized in that: The voice circuit adopts WT588S voice chip and uses two-wire serial port to realize the communication between voice chip and MCU; Under the control of the MCU, the voice chip searches for pre-stored voice information from the specified address, uses PWM wave output to drive the peripheral speaker to sound, and plays the corresponding voice prompt information.

4. The device according to claim 3, characterized in that: The method of controlling the volume of the voice circuit includes: The volume of the speaker sound can be adjusted by adjusting the different duty cycles of PWM; The specific voice volume is stored in the memory.

5. The device according to claim 1 or 2, characterized in that: The LCD screen communicates with the MCU via SPI to obtain and display alarm information; Among them, DMA is used to transfer data directly from memory to SPI peripherals in batches to increase the refresh rate of the LCD screen; In addition, a combination of data segment transmission and data verification is adopted to ensure the accuracy of data at each stage.

6. The device according to claim 1, characterized in that The backlight circuit adjusts the screen brightness in the following ways: Adopting photosensor, which is sensitive to the brightness of surrounding ambient light, to realize automatic adjustment of LCD screen brightness; Manually adjust the screen brightness.

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