Matrix keyboard for detector of positioning orientating system

A matrix keyboard, positioning and orientation technology, applied in the field of input devices, can solve problems such as inability to use a mouse, large size, etc., to facilitate performance testing and fault diagnosis, and ensure portability and reliability.

Inactive Publication Date: 2011-08-17
BEIJING INSTITUTE OF TECHNOLOGYGY
View PDF3 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the known keyboard is the standard keyboard on an ordinary PC, which is relatively large in size, so the operation of the detector cannot be completed through the standard

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Matrix keyboard for detector of positioning orientating system
  • Matrix keyboard for detector of positioning orientating system
  • Matrix keyboard for detector of positioning orientating system

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0012] figure 1 The middle matrix keyboard is composed of 4 I / O lines as row lines and 6 I / O lines as column lines. Set a button at each intersection of the row and column lines to save I / O ports. The number of keys in the keyboard is 4×6, and its working principle is that the row line is connected to the 5v power supply through a pull-up resistor, and the row line without a button is at high level, and when a key is pressed, the level state of the row line will be determined by this line. The level of the column line connected by the line is determined. If the column line level is low, the row line level is low; if the column line level is high, the row line level is high.

[0013] figure 2 In the standard keyboard, the key value corresponding to each key can be uniquely corresponding to a row scan code and a column scan code. The chip uses this correspondence relationship to treat user-defined keys as a row scan code The combination of L1-L8 and a column of scan codes C1-C13. ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a matrix keyboard for a detector of a positioning orientating system, which comprises 6 special functional keys, two luminance control keys, 12 number/control keys, a confirming key, an escape key, a delete key, and a reset key, wherein the 6 special functional keys are as follows: a shift-detecting key, a north-searching key, a navigation key, a demarcating key, a binding key and a self-checking key; the 12 number/control keys are as follows: 0-9 ten number keys, a number switching num key and a symbolic key; the number keyboard can be used as a direction key when the function of number switching num key is not started; data can be inputted normally after the function of number switching num key is started; and a decoding plate is used for converting the key signal into the code which can be identified by the windows XP operation system and directly connecting to a keyboard port of the PC104 computer board. By externally connecting the matrix keyboard, the portability and the reliability of the detector are ensured, thereby ensuring the butt joint with a vehicle-loaded positioning orientating navigation system and performing the property test and fault diagnosis.

Description

technical field [0001] The invention relates to an input device for a detector of a positioning and orientation system, in particular to an external matrix keyboard suitable for a detector whose weight and volume are limited to a certain extent, and uses as few keys as possible to realize all its functions. Background technique [0002] The vehicle navigation system is an autonomous inertial navigation system. Inertial navigation is an indispensable means of navigation in modern weapons and equipment, because it belongs to autonomous navigation and only depends on the output of its own inertial sensitive elements relative to the inertial reference system. It needs any external information and is free from natural or human interference, so it is favored by the military department and is widely equipped in various weapon systems. It relies on inertial technology to determine its own position and the best route from each target point. Due to the mobility, speed and flexibility ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G06F3/02
Inventor 徐建华韩勇强李振华孙寿才谢玲
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap