Cascading extended acquisition system and method based on CAN and LoRa
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A technology of acquisition system and acquisition method, which is applied in the field of extended transmission, can solve the problems of no way to obtain real-time monitoring information, etc., and achieve the effect of increasing distance, increasing utilization rate and expanding range
Pending Publication Date: 2018-11-16
SHANDONG JINGCHENG ELECTRONICS SCI & TECH
View PDF7 Cites 8 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
[0008] (4) At present, mobile terminal equipment must access the ground server through the network to obtain on-site environmental parameters and equipment
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
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0059] as attached figure 1 As shown, the cascaded expansion acquisition system based on CAN and LoRa of the present invention, its structure includes a transmission substation 1 and three collectors 2, between the transmission substation 1 and the collector 2 and between the collector 2 and the collector 2 Data connection and communication are carried out through the CAN bus 8.
[0060] as attached figure 2 As shown, the collector 1 includes a main controller 3, a secondary controller 4, a power module 14, a CAN transceiver 5, a CAN transceiver 2 6, a Flash storage module 7 and seven LoRa modules 9, and the seven LoRa modules 9 are distributed There are seven channels from channel 0 to channel 6, and the load capacity of the LoRa wireless network is increased through seven channels and through frequency division and time division. The power supply module 14 is electrically connected to the main controller 3, the secondary controller 4, the LoRa module 9, the first CAN tran...
Embodiment 2
[0063] The cascade expansion acquisition method based on CAN and LoRa of the present invention, the method comprises the steps:
[0064] S1. The collector 2 buffers and forwards CAN communication frames uploaded by the lower-level collector 2 and sent by the upper-level collector 2 or the transmission substation 1;
[0065] CAN communication application layer protocol definition:
[0066] CAN data frame definition:
[0067]
[0068] CAN bus technology uses identifiers for data transmission arbitration operations. According to the CAN2.0 protocol, CAN identifiers are divided into two types: standard identifiers and extended identifiers. The standard identifier is 11 bits, and the extended identifier is 29 bits. CAN The extended identifier is adopted, that is, the 29-bit extended identifier is adopted.
[0069] The planning functions implemented by the 29-bit identifier include priority (3 bits), message type (3 bits), source address (5 bits), destination address (5), total...
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 cascading extended acquisition system and method based on CAN and LoRa and belongs to the extended transmission technology. The technical problem to be solved in the invention is how to improve anti-interference performance of wireless transmission in a mine roadway and CAN bus bandwidth data transmission speed. The adopted technical scheme is characterized in that the system comprises a transmission substation and at least one collector. The transmission substation and the collector as well as the collector and the collector realize data connection and communicationthrough a CAN bus. The collector comprises a master controller, an auxiliary controller, a CAN transceiver 1, a CAN transceiver 2, a Flash storage module and at least one LoRa module. The master controller is connected with the auxiliary controller through a serial port; the master controller is connected with the CAN transceiver 1 and the CAN transceiver 2 through the CAN bus; the master controller is connected with the Flash storage module through SPI; and the auxiliary controller is connected with the LoRa module through a serial port. The invention also discloses the cascading extended acquisition method based on CAN and LoRa.
Description
technical field [0001] The invention relates to the technical field of extended transmission, in particular to a cascade extended acquisition system and method based on CAN and LoRa. Background technique [0002] Due to the complex situation in the mine roadway, there are steel rails, brackets, dampers, lighting lines and power cables in the roadway, and the roadway walls are uneven, crisscross, and roundabout. In such a complicated and limited space, the propagation of radio waves and free space Very different from the ground. The transmission distance of radio waves in the mine roadway will generally attenuate to about one-fifth of the ground. Therefore, the deployment density of wireless collection devices in mine roadways is much higher than that on the ground, so the deployment cost of wireless collection devices in mine roadways is relatively high. [0003] In order to upload the data in the mine to the ground server through the industrial Ethernet, a substation devi...
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
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more 
Login to view more