Positioning method and positioning system based on two-dimensional magnetic codes
A positioning method and positioning system technology, applied in the field of positioning and positioning systems based on two-dimensional magnetic encoding, can solve the problems of poor positioning accuracy, high cost, and limited vehicle running speed, so as to reduce the overall calculation amount and ensure accurate positioning , the effect of reducing the cumulative error
Active Publication Date: 2013-08-07
山东联友通信科技发展有限公司
View PDF6 Cites 37 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0007] Disadvantage 1: RFID is used in positioning technology, generally passive RFID, and has a long positioning response time. Generally, it takes about 100ms to wake up once, which limits the running speed of the vehicle; and the positioning accuracy is poor, generally greater than 100mm
Although the above shortcomings have been solved to a certain extent for active RFID, due to the cumbersome and high cost of laying tags, it is not practical in a wide range of workplaces.
[0008] Disadvantage 2: Although inertial positioning technology can achieve high positioning accuracy, the cost is very high, and it is not suitable for general applications that do not require high positioning accuracy
[0009] Disadvantage 3: Although the wireless positioning technology has the advantages of flexible installation, the positioning accuracy is poor. For example, the wireless positioning technology combined with WiFi and RFID, the positioning accuracy is generally above 1000mm, and the high-precision dedicated wireless positioning products, such as impact radio, are very expensive. , not suitable for general applications that do not require high positioning accuracy
[0012] In the Chinese patent document CN102661745A, a navigation method for an automatic walking robot with a magnetic strip and an RFID tag is disclosed, which adopts a comprehensive positioning method, and naturally, inevitably, there will be inherent defects such as the RFID positioning method
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0031] The positioning method combined with the magnetic tape guidance technology, such as the patent literature cited in the background art section, the magnetic tape guidance technology has been developed relatively maturely. like Figure 4 As shown, the specific method here is: laying a magnetic tape with a certain width that periodically changes in magnetic field strength on the trajectory of the carrier or the set path, which is called a periodic discrete guidance tape, and then passes through the Hall sensor array Detecting the periodic discrete guiding tape, and adjusting the attitude of the carrier by detecting the distribution of the magnetic field intensity so that the carrier runs along the periodic discrete guiding tape according to a predetermined attitude and direction.
[0032] Figure 4 A block with a grid in is represented in figure 1 The middle one is a schematic diagram of a coding method or a block structure. exist Figure 4 There is no need to express ...
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
Login to View More Abstract
The invention discloses a positioning method and a positioning system based on two-dimensional magnetic codes. Carrier guiding is performed by adopting a magnetic tape with periodically changing magnetic field strength, and positioning is performed by adopting the two-dimensional codes with the magnetic tape. Since only one position is determined by a two-dimensional coding block, and the position can be further adopted as a base point to perform positioning among nodes, entire amount of calculation is greatly reduced, error accumulation is reduced, positioning accuracy is improved, and accurately positioning is guaranteed.
Description
technical field [0001] The invention relates to a positioning method and a positioning system using magnetic coding technology. Background technique [0002] In indoor ground operations, such as factory workshops, it is the basis of automated operations for vehicles (automatic guided vehicles, etc.) to determine their own position in the operation plane. In response to the requirements of determining the median value of the vehicle in the operation plane, the positioning method is generally used. Currently, there are many positioning technologies, mainly including the following three positioning methods: [0003] The first positioning method: RFID (Radio Frequency Identification, radio frequency identification technology, also known as radio frequency identification or electronic tag) positioning technology, by embedding RFID tags at predetermined positions on the ground, installing card readers on vehicles, and reading cards The sensor judges the position of the RFID ...
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
Login to View More IPC IPC(8): G01D5/12
Inventor 李维钊韩艳祥赵大洪
Owner 山东联友通信科技发展有限公司