Display method of mining full-color LED display screen

Abstract

The invention relates to the technical field of display screens, in particular to a display method of a mining full-color LED display screen. The handheld terminal device operates the full-color LED display screen; the invention discloses an embedded Web service. According to the invention, the full-color LED display screen is connected with multiple types of sensors and power supply equipment, so that the acquisition and real-time display of local data are realized, and the system can be independently used as display and acquisition equipment, can also be matched with various systems such as a coal mine information issuing system, a gas inspection system and a safety monitoring system for use, and meets the diversified use requirements of a coal mine.

Description

Technical Field

[0001] The invention relates to the technical field of display screens, and in particular to a display method of a full-color LED display screen for mining. Background Art

[0002] With the development of intelligent coal mine construction, coal mines have higher and higher functional requirements for display screens, and the demand for LED display screens is increasing. More and more edge devices and terminal devices need to display environmental parameter information. Display screens not only need to be used in major mainstream systems in coal mines, but also need to be displayed on-site in the system. As an important display device underground, LED display screens for mines are widely used in information release systems, personnel precise positioning systems, vehicle auxiliary transportation systems, and safety monitoring systems.

[0003] At present, LED display screens are mainly monochrome or dual-color displays, displaying pictures, text, tables, etc., which are used to display safety slogans, evacuation measures, personnel positioning equipment conditions, various emergency notices, sensor measurement point data, etc. The LED display screen is connected to the host computer system through the network or RS485 bus. The host computer system sends the display template and the content to be displayed for information release. If the display content changes, the host computer re-sends it. The communication protocol adopts the traditional binary protocol or JSON text protocol. However, the existing mining LED display screen has the following disadvantages:

[0004] 1. Existing mining LED display screens use monochrome or dual-color display screens, which display a single color, not rich display content, and do not support full-color dynamic pictures and video playback;

[0005] 2. The data display of the equipment terminal needs to be uploaded to the host computer through the RS485 bus or network, and then the display format and display data are sent through the host computer software;

[0006] 3. The display screen is only a display device and does not support the data collection function of sensors or execution devices;

[0007] 4. The display formats such as fonts, colors, and charts need to be generated by the host computer information editing software according to the protocol format. The protocol needs to be agreed upon by the host computer and the display screen. If the display format needs to be increased later, the communication protocol must be modified. Both the host computer and the display screen need to modify the software. If the later function expansion is not utilized, it is inflexible to use. Summary of the invention

[0008] The technical problem to be solved by the present invention is: in order to solve the technical problem that the existing monochrome or dual-color LED display screens do not have a data acquisition function, the present invention provides a display method for a full-color LED display screen for mining, which can realize real-time acquisition and display of various types of data by improving the full-color LED display screen.

[0009] The technical solution adopted by the present invention to solve the technical problem is: a display method of a full-color LED display screen for mining, comprising the following steps:

[0010] S1. Multi-type sensor data acquisition: Multi-type sensors are connected to the control board of the full-color LED display screen through the RS485 bus to realize real-time acquisition of sensor monitoring data;

[0011] S2. Handheld terminal device operates the full-color LED display: The handheld terminal device is connected to the full-color LED display screen, and information is released and the full-color LED display screen is configured through the APP of the handheld terminal device;

[0012] S3. Embedded Web service: Mongoose WEB server is used. Mongoose provides API interface and library files. The library files are embedded in the application of the full-color LED display control board to provide a WEB interface for the application of the full-color LED display control board. The communication protocol uses HTTP to configure the full-color LED display and obtain initialization data. The Websocket protocol is used to actively promote the monitoring data of multiple types of sensors and report the data of handheld terminal devices to the host computer and WEB client.

[0013] As a result, the full-color LED display screen is connected to various types of sensors and power supply equipment to realize the collection and real-time display of local data. It can be used independently as a display and collection device, and can also be used in conjunction with major systems such as coal mine information release system, gas inspection system, and safety monitoring system to meet the diverse usage needs of coal mines; HTML files are used to define display templates, and the display content design is flexible and rich. It can define full-color pictures, various tables, audio, video and other combined displays. HTML files have the advantages of simplicity, versatility, portability, maintainability, and cross-platform compatibility; embedded WEB service mode, display format changes only need to change the HTML file and re-issue it, the embedded software does not need to be modified, and subsequent function expansion is thickened, saving manpower and improving development efficiency; the embedded WEB open mode is applied to the design of full-color LED display screens, which provides technical reserves for the subsequent development of local interaction and management of coal mine terminal equipment.

[0014] Furthermore, in step S1, the sensor type, real-time monitoring value, communication status and fault information are obtained by regularly inspecting the sensor.

[0015] Furthermore, in step S1, the multi-type sensor data is saved as text according to the protocol format, and the text is updated when the data changes.

[0016] Further, in step S2, information publishing is used to send local data of the handheld terminal device to the full-color LED display screen for display; configuration of the full-color LED display screen includes: IP configuration, WEB service web page media configuration, and device number configuration.

[0017] Furthermore, in step S2, information release includes: release location, measurement point name, unique ID, monitoring value; acquisition and configuration of network parameters include: IP address, subnet mask, and device unique code of the full-color LED display; web page configuration, editing web page media includes: program ID, media name, type, data source URL, start time, and receiving time.

[0018] Furthermore, in step S3, the definition of the WEB interface includes the following steps:

[0019] S3-1, obtaining initialization data of multiple types of sensors;

[0020] S3-2, configuration information is issued;

[0021] S3-3, Websocket protocol actively pushes data;

[0022] S3-4. HTML web page file.

[0023] Furthermore, in step S3-1, the initialization data of the multi-type sensors are obtained including: sensor types and addresses.

[0024] Furthermore, in step S3-2, the WEB interface is used to configure the full-color LED display screen, and the configuration information includes: current time, network parameters, property configuration related to the host computer, and communication parameter configuration related to the host computer; the "system" parameter type is an array for easy expansion.

[0025] Furthermore, in step S3-3, when the data of multiple types of sensors changes, the WEB interface actively uploads the real-time data values ​​of the sensors.

[0026] Furthermore, in step S3-4, various elements are used in HTML to define the display content, including: title, paragraph, link, picture, list, table, video, audio; the HTML file is saved as a display template in the full-color LED display screen. When the actual content of the full-color LED display screen needs to be changed, only the HTML file needs to be changed. The HTML file is sent by the host computer software through the network or by the handheld terminal device through wireless.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] 1. The present invention connects various types of sensors and power supply equipment through a full-color LED display screen to realize the collection and real-time display of local data. It can be used independently as a display and collection device, and can also be used in conjunction with major systems such as coal mine information release system, gas inspection system, safety monitoring system, etc. to meet the diverse usage needs of coal mines.

[0029] 2. The present invention adopts HTML files to define display templates. The display content design is flexible and rich. It can define the combination display of full-color pictures, various tables, audio, video, etc. HTML files have the advantages of simplicity, versatility, portability, maintainability, and cross-platform compatibility.

[0030] 3. The embedded WEB service mode of the present invention only requires changing the HTML file and re-issuing the display format change, and the embedded software does not need to be modified, which makes subsequent function expansion thicker, saves manpower and improves development efficiency.

[0031] 4. The present invention applies the embedded WEB open mode to the design of the full-color LED display screen, providing technical reserves for the subsequent development of local interaction and management of coal mine terminal equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0033] Figure 1 It is a flow chart of the display method of the full-color LED display screen for mining of the present invention;

[0034] Figure 2 A flowchart of the WEB interface definition of the present invention;

[0035] Figure 3 This is a display effect diagram of the full-color LED display screen of the present invention;

[0036] Figure 4 A diagram showing the relationship between the full-color LED display screen, structure and data transmission of the present invention;

[0037] Figure 5 The software function structure diagram of the full-color LED display screen control board of the present invention;

[0038] Figure 6 The present invention is a flowchart of the control program processing of the full-color LED display screen. DETAILED DESCRIPTION

[0039] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0040] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0041] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] like Figures 1 to 6 As shown, it is the best embodiment of the present invention. The display method of the mining full-color LED display screen of this embodiment includes the following steps:

[0043] S1. Multi-type sensor data acquisition: Multi-type sensors are connected to the control board of the full-color LED display screen through the RS485 bus to realize real-time acquisition of sensor monitoring data;

[0044] S2. Handheld terminal device operates the full-color LED display: The handheld terminal device is connected to the full-color LED display screen, and information is released and the full-color LED display screen is configured through the APP of the handheld terminal device;

[0045] S3. Embedded Web service: Mongoose WEB server is used. Mongoose provides API interface and library files. The library files are embedded in the application of the full-color LED display control board to provide a WEB interface for the application of the full-color LED display control board. The communication protocol uses HTTP to configure the full-color LED display and obtain initialization data. The Websocket protocol is used to actively promote the monitoring data of multiple types of sensors and report the data of handheld terminal devices to the host computer and WEB client. As a result, the full-color LED display screen is connected with various types of sensors and power supply equipment to realize the collection and real-time display of local data. It can be used independently as a display and collection device, and can also be used in conjunction with major systems such as coal mine information release system, gas inspection system, and safety monitoring system to meet the diverse use needs of coal mines; HTML files are used to define display templates, and the display content design is flexible and rich. It can define the combination of full-color pictures, various tables, audio, video, etc. The HTML file has the advantages of simplicity, versatility, portability, maintainability, and cross-platform compatibility; embedded WEB service mode, the display format change only needs to change the HTML file and re-issue it, the embedded software does not need to be modified, and the subsequent function expansion is thicker, saving manpower and improving development efficiency (the traditional display format needs to be generated by the host computer information editing software according to the protocol format. The protocol needs to be agreed upon by the host computer and the display screen. If the display style needs to be changed later, the communication protocol needs to be modified. Both the host computer and the display screen need to modify the software, and the later function expansion is not used, which is not flexible to use); the embedded WEB open mode is applied to the design of the full-color LED display screen, which provides technical reserves for the subsequent development of local interaction and management of coal mine terminal equipment.

[0046] Specifically, the full-color LED display screen includes: a control board, a player box, a receiving card, and a display board, wherein: the control board, as a data source, is responsible for the collection and uploading of monitoring values ​​of multiple types of sensors, the collection and uploading of handheld terminal devices, and the communication with the WEB client. The player box takes care of data processing and video playback and other related controls. The receiving card and the display board are responsible for the reception and display of dot matrix data. The control board is connected to multiple types of sensors (including but not limited to methane sensors, carbon monoxide sensors, carbon dioxide sensors, and annual sensors) through the RS485 bus to realize the local data collection function. The data can be uploaded to the upper computer software and can also be directly sent to the local display; the player box is connected to the control board through the network interface, and the real-time data monitored by multiple types of sensors is obtained through the network, and the real-time display control is performed; by building an embedded WEB server on the control board, the player box interacts with the WEB server through a web browser as a WEB client to obtain real-time data and display it locally.

[0047] Specifically, a WEB server is built on the control panel of the full-color LED display screen. The playback box of the full-color LED display screen serves as a WEB client. The collected methane, carbon monoxide, carbon dioxide, oxygen, and temperature monitoring values ​​are displayed locally in real time through a web browser. The host computer or handheld terminal device can manage and configure the full-color LED display screen; HTML format files are used to display parameters, display formats, and display rules, and the HTML files are stored in the control panel WEB server; this method can define rich display content (including but not limited to display colors, pictures, videos, and sounds) through HTML files, and the configuration is flexible. If the display format needs to be changed, you only need to modify the HTML file again and then save it to the control panel of the full-color LED display screen.

[0048] For example: a handheld terminal device is connected to a full-color LED display screen via Bluetooth or WiFi.

[0049] In this embodiment, in step S1, sensors are inspected regularly to obtain sensor types, real-time monitoring values, communication status, and fault information; multi-type sensor data are saved as text according to the protocol format, and the text is updated when the data changes.

[0050] For example, the text format code is as follows:

[0051] {"code":1,"data":[{"address":1,"typeName":"Methane

[0052] ","pointId":"1","value":"0.03","status":"0"},{"address":2,"typeName":"Carbon Monoxide

[0053] ", "pointId": "2", "value": "2", "status": "0"}, {"address": 3, "typeName" : "Oxygen", "pointId": "3", "value": "21.3", "status": "0"}], "message": "1"}.

[0054] Table 1 Sensor measurement point data definition

[0055] Parameter name type illustrate 1.code integer Return Status 2.data array Measuring point data content 2.1address integer Sensor Address 2.2 typeName string Sensor Name 2.3 pointId string Measurement point id 2.4 value string Monitoring value 2.5 status string Communication status 3.message string Diagnostic Information

[0056] In this embodiment, in step S2, information release is used to send local data of the handheld terminal device to the full-color LED display screen for display; configuration of the full-color LED display screen includes: IP configuration, WEB service web page media configuration, and device number configuration; information release includes: release location, measurement point name, unique ID, and monitoring value; acquisition and configuration of network parameters include: IP address, subnet mask, and device unique code of the full-color LED display screen; web page configuration, editing web page media includes: program ID, media name, type, data source URL, start time, and receiving time.

[0057] For example, the code for information release is:

[0058]

[0059]

[0060] In this embodiment, in step S3, the definition of the WEB interface includes the following steps:

[0061] S3-1, obtaining initialization data of multiple types of sensors;

[0062] S3-2, configuration information is issued;

[0063] S3-3, Websocket protocol actively pushes data;

[0064] S3-4, HTML web page file;

[0065] In step S3-1, the initialization data of multiple types of sensors are obtained, including: sensor type and address; in step S3-2, the WEB interface is used to configure the full-color LED display screen, and the configuration information includes: current time, network parameters, attribute configuration related to the host computer, and communication parameter configuration related to the host computer; the "system" parameter type is an array for easy expansion; in step S3-3, when the data of multiple types of sensors changes, the WEB interface actively uploads the real-time data value of the sensor (for example: real-time data value of methane, carbon monoxide, carbon dioxide, and temperature); in step S3-4, in HTML, various elements are used to define the display content, and the elements include: title, paragraph, link, picture, list, table, video, audio; the HTML file is saved in the full-color LED display screen as a display template. When the actual content of the full-color LED display screen needs to be changed, only the HTML file needs to be changed. The HTML file is sent by the host computer software through the network or sent by the handheld terminal device through wireless.

[0066] Table 2 Initialization data format

[0067]

[0068] Table 3 Description of initialization parameters

[0069] Parameter name type illustrate 1.code Integer Return Status 2.data Arrays Measuring point data content 2.1address Integer Sensor Address 2.2typeName String Sensor Name 2.3id String Measurement point id 3.message String Diagnostic Information

[0070] Table 4 Configuration information format

[0071]

[0072]

[0073] Table 5 Configuration parameter attribute description

[0074] Parameter name type illustrate 1.code Integer state 2.data Object Configuration Content 2.1ledTime Object Full color screen time, used for time adjustment 2.2netWork Object Network parameters 2.3system Arrays Host computer system related parameters and attribute configuration, etc. 3.message String information

[0075] Table 6 Websocket protocol data definition

[0076]

[0077]

[0078] The following is an example of the intelligent gas inspection system in coal mines:

[0079] Fixed point inspection requires real-time display of inspection data on a full-color LED display screen, including monitoring values ​​of methane, carbon dioxide, carbon monoxide, oxygen, and temperature. Figure 3 As shown, the fixed information of tables, texts, and pictures are defined using corresponding elements in HTML. The monitoring values ​​of methane, carbon dioxide, carbon monoxide, oxygen, and temperature need to change in real time.

[0080] In the HTML file, specify the URL of the full-color LED display control panel web page through ws=new WebSocket("ws: / / 192.168.5.99:8001 / websocket") to establish a Websocket connection;

[0081] Different display requirements define different HTML files, and the files are saved in the control board file system of the full-color LED display screen;

[0082] An example HTML file is shown below:

[0083]

[0084]

[0085]

[0086]

[0087] In summary, the present invention connects a full-color LED display screen with multiple types of sensors and power supply equipment to realize the collection and real-time display of local data. It can be used independently as a display and collection device, and can also be used in conjunction with major systems such as coal mine information release system, gas inspection system, and safety monitoring system to meet the diverse usage needs of coal mines; HTML files are used to define display templates, and the display content design is flexible and rich. It can define full-color pictures, various tables, audio, video and other combined displays. HTML files have the advantages of simplicity, versatility, portability, maintainability, and cross-platform compatibility; in the embedded WEB service mode, the display format change only needs to change the HTML file and re-issue it, and the embedded software does not need to be modified, which makes subsequent function expansion thicker, saves manpower, and improves development efficiency; the embedded WEB open mode is applied to the design of the full-color LED display screen, which provides a technical reserve for the subsequent development of local interaction and management of coal mine terminal equipment.

[0088] The above description is based on the ideal embodiment of the present invention. Through the above description, relevant personnel can make various changes and modifications without departing from the technical concept of the present invention. The technical scope of the present invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A display method for a full-color LED display screen for mining, characterized in that: The following steps are involved: S1. Multi-type sensor data acquisition: Multi-type sensors are connected to the control board of the full-color LED display screen through the RS485 bus to realize real-time acquisition of sensor monitoring data; S2. Handheld terminal device operates the full-color LED display: The handheld terminal device is connected to the full-color LED display screen, and information is released and the full-color LED display screen is configured through the APP of the handheld terminal device; S3. Embedded Web service: Mongoose WEB server is used. Mongoose provides API interface and library files. The library files are embedded in the application of the full-color LED display control board to provide a WEB interface for the application of the full-color LED display control board. The communication protocol uses HTTP to configure the full-color LED display and obtain initialization data. The Websocket protocol is used to actively promote the monitoring data of multiple types of sensors and report the data of handheld terminal devices to the host computer and WEB client.

2. The display method of the full-color LED display screen for mining according to claim 1 is characterized in that: In step S1, the sensor type, real-time monitoring value, communication status and fault information are obtained by regularly inspecting the sensor.

3. The display method of the full-color LED display screen for mining according to claim 1 is characterized in that: In step S1, multi-type sensor data is saved as text according to the protocol format, and the text is updated when the data changes.

4. The display method of the full-color LED display screen for mining according to claim 1 is characterized in that: In step S2, information publishing is used to send local data of the handheld terminal device to the full-color LED display screen for display; Configuration of full-color LED display includes: IP configuration, WEB service web page media configuration, device number configuration.

5. The display method of the full-color LED display screen for mining according to claim 4 is characterized in that: In step S2, information release includes: Publish location, measurement point name, unique ID, and monitoring value; The acquisition and configuration of network parameters include: IP address, subnet mask, and device unique code of the full-color LED display; Web page configuration, editing web page media includes: Program ID, media name, type, data source URL, start time, and reception time.

6. The display method of the full-color LED display screen for mining according to claim 1 is characterized in that: In step S3, the definition of the WEB interface includes the following steps: S3-1, obtaining initialization data of multiple types of sensors; S3-2, configuration information is issued; S3-3, Websocket protocol actively pushes data; S3-4. HTML web page file.

7. The display method of the full-color LED display screen for mining according to claim 1 is characterized in that: In step S3-1, obtaining initialization data of multiple types of sensors includes: Sensor type and address.

8. The display method of the full-color LED display screen for mining according to claim 1 is characterized in that: In step S3-2, the WEB interface is used to configure the full-color LED display screen. The configuration information includes: Current time, network parameters, property configuration related to the host computer, and communication parameter configuration related to the host computer; The "system" parameter type is an array to facilitate expansion.

9. The display method of the full-color LED display screen for mining according to claim 1, characterized in that: In step S3-3, when the data of multiple types of sensors changes, the WEB interface actively uploads the real-time data values ​​of the sensors.

10. The display method of the full-color LED display screen for mining according to claim 1, characterized in that: In step S3-4, various elements are used in HTML to define the display content, including: Titles, paragraphs, links, images, lists, tables, videos, audio; The HTML file is saved as a display template in the full-color LED display. When the actual content of the full-color LED display needs to be changed, only the HTML file needs to be changed. The HTML file is sent by the host computer software through the network or by the handheld terminal device through wireless.

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