Method for managing equipment numbers of distributed system
A distributed system and management method technology, applied in the field of device number management in distributed systems, can solve the problems of occupying backplane signal lines, limited number of expanded devices, and inability to fully utilize resources, etc., to achieve unlimited scale, The effect of an unlimited number of devices
Inactive Publication Date: 2010-04-07
NANTONG BEICHEN MACHINERY EQUIP MFGCO
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Problems solved by technology
like figure 1 as shown, figure 1 It is a schematic diagram of the parallel connection between the main board and the slave board in a distributed system. Since the connection between the main board and the slave board is a parallel connection, it will occupy multiple signal lines on the backplane and cannot make full use of resources.
When the number of extended devices reaches a certain number, this method will be subject to certain restrictions, and will limit the number of extended devices
Method used
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Embodiment 1
[0015] This embodiment describes a device number management method of a distributed system. The distributed system includes a main board and several slave boards, such as figure 2 As shown, the method specifically includes:
[0016] In step S1, several slave boards are serially connected through a signal line, and the main board is connected to the signal line. Such as image 3 as shown, image 3 It is a schematic diagram of the serial connection between the main board and the slave board in the distributed system. exist figure 2 Among them, several slave boards are included: slave board 1, slave board 2, and slave board n; the main board connects to each slave board through a signal line at the same time. All interfaces of the slave board are open-drain, and a pull-up resistor is added to the bus when in use. The range of the pull-up resistor is 3kΩ to 6kΩ.
[0017] Step S2, presetting a data transmission protocol for unidirectional transmission, so that the main board...
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The invention relates to the management of equipment numbers, and provides a method for managing the equipment numbers of a distributed system. The method comprises the following steps: connecting a plurality of slave plates in serial by a signal line, and connecting a master plate with the signal line; presetting a data transmission protocol for one-way transmission to allow the master plate to transmit data to the plurality of slave plates simultaneously according to the data transmission protocol; setting the equipment numbers on the master plate, packaging the equipment numbers according to the data transmission protocol, and transmitting the equipment numbers through the signal line; and analyzing the equipment numbers from the signal line by the slave plates according to the data transmission protocol and storing the equipment numbers. The technical scheme can save the chip I / O, reduce the number of back plate connectors and connecting line pins and save the PCB area and the line cost. The adopted data transmission protocol for the one-way transmission can reduce the error rate, ensure the reliability of data transmission, and support the unlimited scale of the distributed system.
Description
technical field [0001] The invention relates to equipment number management, in particular to a distributed system equipment number management method. Background technique [0002] A distributed system refers to a complete hardware device system, including a main board and multiple slave boards, which are connected through a backplane or connecting wires, and the main board and slave boards complete a function through a bus. In a large-scale system in which multiple distributed systems are connected in series, it is necessary to distinguish each different distributed system through the device number. [0003] At present, the device number configuration method is to set the local device number through the main board. The main board is connected to each slave board through multiple signal lines. When the slave board is started, the device number is obtained by reading the fixed level value of the signal line through the logic device. Such as figure 1 as shown, figure 1 It i...
Claims
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IPC IPC(8): G06F13/42
Inventor 黄晓东吴鹏景博刘伟俭
Owner NANTONG BEICHEN MACHINERY EQUIP MFGCO