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Signal processing device

A signal processing device, a technology of a signal processing unit, applied in the direction of electrical digital data processing, input/output process of data processing, instruments, etc.

Inactive Publication Date: 2017-08-15
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the control performed by the main board via the bus and the I / O unit is not suitable for the case where real-time performance is required.

Method used

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Experimental program
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Embodiment approach 1

[0037] figure 1 It is a diagram showing the hardware configuration of an industrial system including the signal processing device according to the first embodiment.

[0038] The industrial system 1 includes: machines 3 and 4 that execute industrial processes exemplified by product manufacturing; and a programmable controller (JIS (Japanese Industrial Standards, Japanese Industrial Standards) B3502:2011, programmable controller) that controls the machines 3 and 4 controllers (PLC))2.

[0039] The programmable controller 2 includes a main board 21 , an input / output unit 22 connected to the main board 21 via a bus B1 , and a signal processing device 23 . The input / output unit 22 and the signal processing device 23 are respectively sub-boards of the programmable controller 2 .

[0040] The input / output unit 22 is connected to the machine 3 and is a transceiver for transmitting data input from the machine 3 to the main board 21 and outputting data received from the main board 21 ...

Embodiment approach 2

[0098] Image 6 It is a diagram showing the hardware configuration of the signal processing device according to the second embodiment.

[0099] and figure 2 Compared with the signal processing device 23 according to the first embodiment shown, the signal processing device 23A according to the second embodiment further includes a determination unit 26 as a logic circuit.

[0100] The determination unit 26 performs logical operation on the signal input from the first output latch 34 and the signal input from the second output latch 44, outputs the first output signal obtained by the logical operation to the first output circuit 35, and outputs the first output signal obtained by the logical operation to the first output circuit 35. The second output signal obtained by logical operation is output to the second output circuit 45 .

[0101] Figure 7 It is a figure which shows the truth table of the logical operation performed by the determination part of the signal processing ...

Embodiment approach 3

[0111] Figure 8 It is a diagram showing the hardware configuration of the signal processing device according to the third embodiment.

[0112] and figure 2 Compared with the signal processing device 23 according to the first embodiment shown, the signal processing device 23B according to the third embodiment further includes a determination unit 28 as a logic circuit.

[0113] The determination unit 28 includes a collating circuit 28a. The collation circuit 28 a is a logic circuit that executes a logic operation that collates whether or not the first input signal input from the first input latch 32 and the second input signal input from the second input latch 42 coincide.

[0114] The determination unit 28 includes a first AND (logical AND) circuit 28b. The first AND circuit 28b performs a logical AND operation of the output signal of the first output latch 34 and the output signal of the collation circuit 28a, and outputs a first output signal which is a result signal of...

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PUM

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Abstract

Provided is a signal processing device, comprising: a first storage unit which stores a first state transition table which associates a current state with a first input signal and a second input signal which are received as input from an external source, and a following state with a first output signal and the second input signal; a second storage unit which stores a second state transition table which is the same as the first state transition table; a first signal processing unit which refers to the first state transition table and determines the following state and the first output signal; and a second signal processing unit which refers to the second state transition table and determines the following state and a second output signal. The first signal processing unit receives the first input signal from the external source, and receives the second input signal from the second signal processing unit. The second signal processing unit receives the second input signal from the external source, and receives the first input signal from the first signal processing unit.

Description

technical field [0001] The present invention relates to a signal processing device for controlling industrial machinery. Background technique [0002] Currently, programmable controllers are used in the control of industrial machines. The programmable controller includes a main board and an input / output unit as a sub-board connected to the main board by a bus. The I / O unit is connected to industrial machinery. [0003] Industrial machines output input signals to input and output units. The I / O unit sends input signals from industrial machinery to the main board. The main board performs control calculation based on the input signal, and sends an output signal as a result of the control calculation to the input / output unit. The input / output unit outputs the output signal received from the main board to the industrial machine. Thus, the main board can control industrial machines. [0004] However, the bus communication between the main board and the input / output unit has ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F13/00G06F3/00
CPCG06F3/00G06F13/00
Inventor 仓地晴幸
Owner MITSUBISHI ELECTRIC CORP
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