Method and system for interacting master and slave information in real time

Patent metadata

Field	Value
Publication number	US-9823650-B2
Application number	US-201415104344-A
Country	US
Kind code	B2
Filing date	Oct 9, 2014
Priority date	Jan 26, 2014
Publication date	Nov 21, 2017
Grant date	Nov 21, 2017

Abstract

A method for interacting master and slave information in real time, comprising: collecting, by N slave control MCUs, sensor signals of sensors respectively connected thereto; feeding back, by the N slave control MCUs, the sensor signals to a master control MCU via a signal transfer panel; and when the sensor signals satisfy a pre-set condition, giving, by the master control MCU, a control instruction to a corresponding slave control MCU according to the pre-set condition, wherein both the sensor signals and the control instruction are transmitted between the master control MCU and the slave control MCUs via the signal transfer panel in an SP signal manner. Also disclosed is a system for interacting master and slave information in real time. The method for interacting master and slave information in real time can reduce the redundant information interaction and improve the communication efficiency.

First claim

The invention claimed is:

1. A method for real-time master and slave information interaction, comprising:
collecting, by N slave control Micro Controller Units (MCUs), sensor signals of sensors respectively connected to the N slave control MCUs;
feeding, by the N slave control MCUs, the sensor signals back to a master control MCU via a signal transfer board; and
issuing, by the master control MCU, a control instruction to a corresponding slave control MCU based on a preset condition once a sensor signal meets the preset condition,
wherein the sensor signals and the control instruction are all transmitted between the master control MCU and the slave control MCUs via the signal transfer board in a form of a first signal;
wherein after powering up, the master control MCU initiates broadcast communication by using the first signal and a Controller Area Network (CAN) bus communication protocol; each of independent slave control MCUs enters into an interrupt receiving state after receiving the broadcast communication, and detects the first signal sent by the master control MCU; in a case that the first signal has a valid level, the slave control MCU receives data sent from the CAN bus, where the data comprises a communication identifier of the slave control MCU; the slave control MCU erases an address of the broadcast communication.

2. The method according to claim 1 , further comprising:
collecting, by the master control MCU, a sensor signal of a sensor connected to the master control MCU.

3. The method according to claim 1 , wherein the issuing, by the master control MCU, the control instruction to the corresponding slave control MCU based on the preset condition once a sensor signal meets the preset condition comprises:
analyzing, by the master control MCU, the sensor signal to obtain an analysis result; and
issuing, by the master control MCU, the control instruction to the corresponding slave control MCU based on the preset condition in a case that the analysis result meets the preset condition.

4. The method according to claim 1 , further comprising:
issuing, by the master control MCU, an execution instruction to a corresponding electronic element based on the preset condition once the sensor signal meets the preset condition, wherein the electronic element is connected to the master control MCU.

5. The method according to claim 1 , wherein after the issuing, by the master control MCU, the control instruction to the corresponding slave control MCU based on the preset condition, the method further comprises:
issuing, by the slave control MCU, an execution instruction to an electronic element connected to the slave control MCU in response to the control instruction; and
performing, by the electronic element, a relevant operation in response to the execution instruction.

6. The method according to claim 1 , further comprising:
acquiring from the master control MCU, by the slave control MCU, sensor signals of any one or more of remaining N−1 slave control MCUs, where N is greater than or equal to 2.

7. The method according to claim 1 , further comprising:
transmitting, by the signal transfer board, the sensor signal collected by the slave control MCU to any one or more of the remaining N−1 slave control MCUs in a preset transfer way directly, where N is greater than or equal to 2.

8. The method according to claim 7 , further comprising:
controlling, by the any one or more of the remaining N−1 slave control MCUs, a corresponding electronic element to operate based on the sensor signal after the any one or more of the remaining N−1 slave control MCUs receives the sensor signal.

9. A system for real-time master and slave information interaction, comprising:
a master control Micro Controller Unit (MCU) and N slave control MCUs, wherein
the slave control MCUs are connected to one or more sensors and/or are configured to control one or more electronic elements;
the master control MCU is line-connected to the N slave control MCUs via a signal transfer board;
the master control MCU is configured to issue a control instruction to a corresponding slave control MCU based on a preset condition once a sensor signal as acquired meets the present condition;
the slave control MCUs are configured to collect sensor signals of sensors respectively connected to the slave control MCUs, and feed the sensor signals to the master control MCU via the signal transfer board; and
the sensor signals and the control instruction are all transmitted between the master control MCU and the slave control MCUs via the signal transfer board in a form of a first signal;
wherein after powering up, the master control MCU initiates broadcast communication by using the first signal and a Controller Area Network (CAN) bus communication protocol; each of independent slave control MCUs enters into an interrupt receiving state after receiving the broadcast communication, and detects the first signal sent by the master control MCU; in a case that the first signal has a valid level, the slave control MCU receives data sent from the CAN bus, where the data comprises a communication identifier of the slave control MCU; the slave control MCU erases an address of the broadcast communication.

10. The system for real-time master and slave information interaction according to claim 9 , wherein
the master control MCU is connected to one or more sensors and/or is configured to control one or more electronic elements;
the master control MCU is further configured to collect sensor signals of the one or more sensors connected to the master control MCU, and issue an execution instruction to a corresponding electronic element based on the preset condition once a sensor signal meets the preset condition;
the slave control MCU is further configured to issue an execution instruction to an electronic element connected to the slave control MCU in response to the control instruction, and acquire from the master control MCU sensor signals of any one or more of remaining N−1 slave control MCUs, where N is greater than or equal to 2; and
a particular one of slave control MCUs is connected to the any one or more of the remaining N−1 slave control MCUs via a preset transfer way of the signal transfer board.

11. The method according to claim 3 , wherein after the issuing, by the master control MCU, the control instruction to the corresponding slave control MCU based on the preset condition, the method further comprises:
issuing, by the slave control MCU, an execution instruction to an electronic element connected to the slave control MCU in response to the control instruction; and
performing, by the electronic element, a relevant operation in response to the execution instruction.

12. The method according to claim 1 , wherein the first signal is a bidirectional signal.

13. The method according to 12 , wherein the first signal is outputted from a collector of an NPN transistor in a pull-up way.

14. The method according to 12 , wherein in a case that the slave control MCU executes an instruction of the master control MCU abnormally, the slave control MCU pulls down the first signal, to feed back a rapid response state in which the slave control MCU executes the instruction.

15. The method according to claim 9 , wherein the first signal is a bidirectional signal.

16. The method according to 15 , wherein the first signal is outputted from a collector of an NPN transistor in a pull-up way.

17. The method according to 15 , wherein in a case that the slave control MCU executes an instruction of the master control MCU abnormall

Assignees

• Grg Banking Equipment Co Ltd

Inventors

• Chen Weibin
• Gao Ping
• Wang Canjie

Classifications

• H04L67/12

  specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks · CPC title

• G05B19/4185 Primary

  characterised by the network communication · CPC title

• G05B2219/25032

  CAN, canbus, controller area network bus · CPC title

• G05B2219/1215

  Leader-follower system · CPC title

• G05B2219/1208

  Communication, exchange of control, I-O data between different plc, · CPC title