KR970002398B1 - The emergency detection method using interrupt handler - Google Patents

Abstract

The method is characterized by comprising the steps of: loading adjustment data after initializing all sorts of parameters; storing the present timer interrupt vector(OLD VECT); setting a new timer interrupt vector; and completing the adjustment by recovering the stored present timer vector(OLD VECT) after finishing measurement adjustment after performing measurement and adjustment by steps.

Description

How to detect EMERGENCY status by interrupt handler method

1 is a block diagram of the present invention.

2 is a main adjustment routine flowchart of the present invention.

3 is a detailed flowchart of setting up a new interrupt step of FIG.

* Explanation of symbols for main parts of the drawings

1: Computer 2: Port Expander

3: DC motor controller 4: high-speed A / D converter

5: frequency measuring unit 6: signal switching unit

7: signal generator 8: power controller

9: D I / O (DIGITAL IN PUT / OUT PUT) Control Unit

10: power supply unit 11: Hajig

12: PCB assembly 13: upper jig press portion

14 DC motor

15: PLC (PROGRAMMBLE LOGIC CONTROLLER)

16: operation panel 17: discharge device

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a PCB automatic regulator, and more particularly, to an emergency state detection method by an interrupt handler method for easily and easily adding ERM (EMERGENCY) key detection of a PCB regulator on a PC bus by adding a software routine.

In the past, only the PLC was processed in the emergency condition of the automatic controller by the PC, so when the EMR key is pressed during the measurement and adjustment of the PCB assembly, the power supply (AC) currently supplied to the PCB assembly is not interrupted. At the same time, as the upper jig is raised, the current remaining in each capacitor in the PCB assembly adversely affects the operator or the PCB components.

In addition, the measurement unit can detect the pressed state only after the EMR key press is adjusted, resulting in considerable time loss.

And the hardware method was accompanied by difficulties such as noise reduction and circuit configuration, and the design was quite difficult.

In the present invention, by changing the address stored in the interrupt vector table of the computer to the address of the user (written), the user-defined function can be executed when the internal timer generates an interrupt 18.2 times per second. The goal is to insert routines so that user-defined functions can be executed automatically when the EMR key is turned on at any time, regardless of the main flow of the program.

This will be described with reference to the accompanying drawings.

A port expander (2) that expands the signal and performs input and output is connected to the PLC (15) for applying the PCB arrival and adjustment start signal and the computer (1) for total control of the system, and the PWM signal from the computer (1). A DC motor controller 3 for driving the DC motor 14 to adjust the adjustment point of the PCB assembly 12 and a high speed A / D converter 4 for converting an analog signal into a digital signal. Signal measuring section 6 for programmatically converting signals extracted from frequency measuring section 5 for measuring signals and hajig 11 into various measurement modules, and signal generating section 7 for generating sine wave or video pattern signals. And a power supply control unit 8 for controlling AC or DC generated in the power supply unit 10 and a discharge device 17 for discharging residual current are connected to the DI / O control unit 9 by a PC bus. ) To the PCB assembly 12 through the Connect the Hajig 11 to the discharge device 17, and connect the signal generator 7 to the frequency measuring section 5 and the high-speed A / D conversion section 4 through the signal switching section 6 and EMR ( Operation panel 16, which is composed of buttons, and the like, is connected to the PLC 15.

Hereinafter, the present invention will be described in detail.

When the PLC 15 notifies the computer 1 of the PCB arrival and start signal through the port expander 2, the computer 1 transmits the DI / O signal, which is a power ON signal, by the power control unit 8 to the power supply unit. The AC power is supplied to (10) and supplied to the restraint 11, and the video pattern signal generated by the signal generation section 7 is supplied to the restraint 11 via the signal switching section 6. As shown in FIG. Therefore, in the PCB assembly 12, the PCB is operated by the supplied AC power and the video pattern signal, and the signal of each control point TP is passed through the signal switching unit 6 to the frequency measuring unit 5 and the high-speed A / D conversion. It is input to the part 4.

When the signal is processed by the algorithm programmed by the frequency measuring unit 5 and the high-speed A / D conversion unit 4 and transmitted to the computer 1, the image jig (3) is transmitted through the DC motor controller 3 by the measurement adjustment algorithm. The DC motor 14 mounted on the 13 is driven to adjust the PCB assembly 12.

On the other hand, when the PCB assembly 12 is shorted during adjustment as described above and destroyed due to an overcurrent, or in an emergency situation in which an operator's body part is barked by the upper jig 13 as a press part, the operation panel ( Press the EMR key in 16).

At this time, the computer 1 constantly checks the PA ₁ port of the port expander 2 every 18.2 times per second by the program. When the EMR signal of the PLC control unit 15 is ON, the computer 1 operates the direct current. Turn off the motor controller (3), high-speed A / D converter (4), frequency measuring unit (5), signal switching unit (6), signal generating unit (7), and power supply control unit (8). O Discharge the PCB assembly 12 by sending a discharge signal to the discharge device 17 by using the control unit 9 and sends a END signal from the computer 1 through the port expander 2 to the PLC 15 to proceed with the program. Jump to the first step and wait for the start signal.

At this time, the PLC 15 receives the END signal from the computer 1 through the port expander 2 and maintains the same until the EMR button of the operation panel 16 is turned off.

After the emergency treatment is over, the operator presses the EMR button on the operation panel 16 again to turn it off.

Once the new target PCB assembly has been introduced and placed in place, start over from the beginning.

Enumerating this in flowchart form looks like this:

In the main adjustment routine, initialize the various variables as shown in Fig. 2, load the adjustment data, save the current timer interrupt vector (OLD VECT), set a new timer interrupt vector, and complete the measurement adjustment. Then, the adjustment is completed by restoring the stored current timer vector (OLD VECT).

Figure 3 is a detailed flowchart of setting up a new interrupt vector, which executes the previously stored OLD VECT, maintains the interrupt enable state, returns if the EMR (emergency) key is off, and stops other interrupts if it is on. Steps and the respective modules 3-8 in FIG. 1 are turned off, discharged, END signal sent to PLC, program reset, and lit in step 1 to process an emergency and enable and return an interrupt.

As described above, the present invention is an advantageous invention that can quickly detect the pressed state of the EMR button in the operation panel to prompt the emergency treatment of the PCB regulator.

Claims (2)

In the PCB automatic controller, after initializing various variables, loading the adjustment data, storing the current timer interrupt vector (OLD VECT), setting a new timer interrupt vector, and performing measurement and adjustment for each step. An emergency handler detection method according to the interrupt handler method, characterized in that the adjustment is completed by restoring the stored current timer vector (OLD VECT) after the adjustment is completed. 2. The method of claim 1, wherein the step of setting the new interrupt vector includes executing the previously stored OLD VECT and maintaining an interrupt enabled state and returning if the EMR key is off and stopping other interrupts if it is ON. And turning off each module (3-8) of FIG. 1, discharging, sending END signal to PLC, program reset, jumping to step 1, handling emergency matters, and enabling and returning an interrupt. Emergency state detection method by the interrupt handler method characterized in that.