CN106525032A - Chinese information display method for inertial navigation system - Google Patents

Abstract

The invention belongs to the Chinese information processing technology of an inertial navigation system, and in particular relates to a Chinese information display method used in an inertial navigation system. The Chinese information display method of the inertial navigation system of the present invention, when the inertial navigation system stores the Chinese information, stores the Chinese information in the waypoint data information in the form of location codes according to the waypoint database structure; through the established Chinese information general standard transmission protocol, Make Chinese information communication between the navigation component and the display component; according to the analysis of the general standard transmission protocol for Chinese information, map out the Chinese character dot matrix library and display the information on the screen. The invention solves the problem that the inertial navigation system cannot process Chinese information, improves the display capability of the inertial navigation system, and increases the convenience of user manipulation.

Description

A Chinese information display method for inertial navigation system

technical field

The invention belongs to the information display technology of an inertial navigation system, and in particular relates to a Chinese information display method for an inertial navigation system.

Background technique

The navigation information used by the traditional inertial navigation system is all navigation data parameters, and the prompt screen of the data information is displayed on the screen to achieve the display effect. The inertial navigation system does not store or use Chinese information, and the system does not process Chinese information. This makes the use of the inertial navigation system subject to many restrictions, such as the necessary Chinese information in the waypoint database, which cannot be used normally, and can only be replaced by numbers or letters to complete the information processing, which has a great impact on the use of users. burden, reducing the quality of navigation products.

Contents of the invention

The object of the present invention is to propose a Chinese information display method for inertial navigation systems, that is, a processing method that can effectively solve the problem of inertial navigation systems implementing Chinese information applications.

The technical scheme that the present invention takes is:

A Chinese information display method for an inertial navigation system, the inertial navigation system includes a navigation component and a control display unit, a waypoint database is stored in the navigation component, and each waypoint information in the waypoint database includes the route The location code, longitude, latitude and height of the point are stored in the control display unit with a location code dot matrix database, wherein each location code corresponds to the dot matrix of the Chinese geographical name represented by the location code, it is characterized in that the method includes The following steps: the navigation component judges the collected navigation information. If the information matches the information of a certain waypoint, the data packet of the waypoint information is sent to the control display unit. After the control display unit receives the waypoint information, it will The area code information is analyzed, and the dot matrix corresponding to the area code is obtained according to the area code dot matrix database, and the dot matrix data is sent to the display device for display.

In particular, the navigation component sends the data packet of the waypoint information to the control display unit through the HB6096 bus, and communicates through the established Chinese information general standard communication protocol. The Chinese information general standard communication protocol is based on the HB6096 bus protocol, state matrix and parity The parity bit is consistent with it, where each data packet has 4 32-bit data, the lowest 8-bit label value in the first 32-bit data is 0X77, which means that the information is Chinese character 1, and the lowest 8-bit label value in the second 32-bit data The 8-bit label value is 0X78, which means the information is Chinese character 2, the lowest 8-bit label value in the third 32-bit data is 0X79, which means the information is Chinese character 3, and the lowest 8-bit label value in the fourth 32-bit data is 0X78, which represents information It is Chinese character 4; the upper 16 bits of each 32-bit data are used to transmit the area code of Chinese characters, the highest 8 bits transmit the area code in BCD format, and the second highest 8 bits transmit the bit code in BCD format; each 32-bit data The 16th bit of data represents the validity of the Chinese character area code, 1 is valid and 0 is invalid.

The present invention has advantages and beneficial effects: the present invention solves the application problem of Chinese information in the inertial navigation system, improves the display capability of navigation information, and increases the convenience of user manipulation. Established a general standard communication protocol for Chinese information transmission on the HB6096 bus, realized a reasonable layering of the system architecture, achieved the overall transplantation of Chinese processing software across models, and improved development efficiency.

Description of drawings

Fig. 1 is a kind of overall architecture diagram of the method for Chinese information processing of inertial navigation system of the present invention;

Fig. 2 is a waypoint database storage structure diagram;

Fig. 3 is a format diagram of the general standard communication protocol for Chinese information transmission.

detailed description

The following is an example of how the inertial navigation system processes the Chinese name of the waypoint in the waypoint database. Combined with the accompanying drawings, a method for processing Chinese information in the inertial navigation system is introduced. The overall structure is shown in Figure 1, and the specific steps are as follows:

A Chinese information display method for an inertial navigation system, the inertial navigation system includes a navigation component and a control display unit, a waypoint database is stored in the navigation component, and each waypoint information in the waypoint database includes the route The location code, longitude, latitude and height of the point are stored in the control display unit with a location code dot matrix database, wherein each location code corresponds to the dot matrix of the Chinese geographical name represented by the location code, it is characterized in that the method includes The following steps: the navigation component judges the collected navigation information. If the information matches the information of a certain waypoint, the data packet of the waypoint information is sent to the control display unit. After the control display unit receives the waypoint information, it will The area code information is analyzed, and the dot matrix corresponding to the area code is obtained according to the area code dot matrix database, and the dot matrix data is sent to the display device for display.

In particular, the navigation component sends the data packet of the waypoint information to the control display unit through the HB6096 bus, and communicates through the established Chinese information general standard communication protocol. The Chinese information general standard communication protocol is based on the HB6096 bus protocol, state matrix and parity The parity bit is consistent with it, where each data packet has 4 32-bit data, the lowest 8-bit label value in the first 32-bit data is 0X77, which means that the information is Chinese character 1, and the lowest 8-bit label value in the second 32-bit data The 8-bit label value is 0X78, which means the information is Chinese character 2, the lowest 8-bit label value in the third 32-bit data is 0X79, which means the information is Chinese character 3, and the lowest 8-bit label value in the fourth 32-bit data is 0X78, which represents information It is Chinese character 4; the upper 16 bits of each 32-bit data are used to transmit the area code of Chinese characters, the highest 8 bits transmit the area code in BCD format, and the second highest 8 bits transmit the bit code in BCD format; each 32-bit data The 16th bit of data represents the validity of the Chinese character area code, 1 is valid and 0 is invalid.

More specific example:

Step 1. Based on the storage structure of the waypoint database, the inertial navigation system establishes the project waypoint database to store navigation parameter information; take waypoint 01 in the No. 2 route, and the Chinese name of the waypoint Xi’an as an example: obtain the Chinese characters corresponding to the waypoint name Xi’an through the software The location codes are 4687 and 1618 respectively, and the data information of the location codes is stored according to the waypoint information storage structure format, see Figure 2, to store it.

uc_wp_fp_no=2; /*The route number is 2*/

ui_wp_no＝01; /* waypoint number is 1*/

uc_wp_name[1][0]=46; /* waypoint name word 1 area code, west area code 46.*/

uc_wp_name[1][1]＝87; /* waypoint name word 1-bit code, west bit code 87.*/

uc_wp_name[2][0]=16; /* waypoint name word 2 area code, safe area code 16.*/

uc_wp_name[2][1]＝18; /* waypoint name word 2-bit code, security bit code 18.*/

uc_wp_name[3][0]=255; /* waypoint name word 3 area code, unused.*/

uc_wp_name[3][1]=255; /* waypoint name word 3-bit code, unused*/

uc_wp_name[4][0]=255; /* waypoint name word 4 area code, unused*/

uc_wp_name[4][1]=255; /* waypoint name word 4-bit code, unused.*/

Step 2: Receive the user's command to inquire about the No. 1 point of the route No. 2, analyze the intent of the command, and dispatch and query the Chinese information stored in the waypoint database according to the command. First, according to the route information, it is reduced to the starting address of No. 2 route data storage 0X8010 0000; secondly, according to the waypoint number, the waypoint offset of the changed area is obtained 0X0000 0000; the final starting point of the waypoint information is 0X8010 0000+0X0000 0000, Get waypoint information.

Step 4: Generate the bus data that can be used for HB6096 bus transmission by using the Chinese location code information "Xi'an" according to the general standard communication protocol format for Chinese information, and complete the transmission of the Chinese data in the bus format, as shown in Figure 3.

According to the communication protocol, the four 32-bit bus data words for transmitting "Xi'an" are:

0X2E57 0677;

0X1012 0678;

0XFFFF 0679;

0XFFFF 067A.

Step 5 Control the display part to receive the Chinese information transmitted by the bus, analyze the bus data in the general standard communication protocol format of the Chinese information, take the high 16 bits of the data word, the highest 8 bits are the area code, and the second highest 8 bits are the bit code; generate Chinese The Chinese character location codes corresponding to the information are 4687 and 1618.

Step 6: Through the conversion mapping method, area code code1, bit code code1, the number of Chinese characters in the logo font hz_no, the starting position coordinate Len of the Chinese character in the font file, and the Chinese character dot matrix buffer hz_buff[32]; the method of obtaining Chinese character points is as follows :

hz_no=((code1&0x07f)*94)+(code2&0x07f);

Len=hz_no*32L;

Continuously read the 32-byte dot matrix data from the Len position of the standard dot matrix font library HZK16 file into hz_buff[32] to obtain the dot matrix data of the Chinese character. According to this method, the Chinese character dot matrix information corresponding to the Chinese information "Xi'an" is obtained, and the Chinese character dot matrix is scanned and displayed according to the display algorithm to form a Chinese graphic.

The method of scanning and displaying Chinese character dot matrix by pixel is as follows;

Through the above operations, the problem of application of Chinese information in the process of viewing the route of the inertial navigation system by the user is realized, the display capability of the navigation information is improved, and the convenience of the user's operation is increased.

Claims (2)

1. A Chinese information display method for inertial navigation system, described inertial navigation system includes navigation component and control display unit, is stored with waypoint database in the navigation component, and each waypoint information in the waypoint database includes The location code, longitude, latitude and height of the waypoint are stored in the control display unit with a location code dot matrix database, wherein each location code corresponds to the dot matrix of the Chinese geographical name represented by the location code, and it is characterized in that the The method includes the following steps: The navigation component judges the collected navigation information. If the collected navigation information matches the information of a certain waypoint, the data packet of the waypoint information is sent to the control display unit. After the control display unit receives the waypoint information, the location The code information is analyzed, and the dot matrix corresponding to the area code is obtained according to the area code dot matrix database, and the dot matrix data is sent to the display device for display. 2. A kind of Chinese information display method that is used for inertial navigation system according to claim 1, is characterized in that: wherein, navigation component sends the data packet of this waypoint information to control display unit by HB6096 bus, and by establishing The general standard communication protocol for Chinese information is used for communication. The general standard communication protocol for Chinese information is based on the HB6096 bus protocol, and the state matrix and parity bits are consistent with it. Each data packet has 4 32-bit data, and the first 32 The lowest 8-bit label value in the bit data is 0X77, indicating that the information is Chinese character 1, the lowest 8-bit label value in the second 32-bit data is 0X78, indicating that the information is Chinese character 2, and the lowest 8-bit label in the third 32-bit data The value of 0X79 means that the information is Chinese character 3, and the lowest 8-bit label value in the fourth 32-bit data is 0X78, which means that the information is Chinese character 4; the upper 16 bits of each 32-bit data are used to transmit the Chinese character area code, the highest 8 bits The area code is transmitted in BCD code format, and the second highest 8 bits are transmitted in BCD code format; the 16th bit of each 32-bit data represents the validity of the Chinese character area code, 1 is valid and 0 is invalid.