KR19990033145A - Interrupt Generation Method of Digital Signal Measurement Board - Google Patents

Abstract

The present invention is to detect an event occurrence from the source of the interrupt in the digital signal measuring board in order to detect a change in the state, and to generate an interrupt for the interruption, by detecting the pearling edge of the signal from the source of the interrupt generated interrupt Then, the rising edge of the signal from the interrupt source is detected and an interrupt is generated.

In addition, the interrupt generator is characterized in that the interrupt generator, which is not used by the DIP switch, is masked to generate a signal.

Description

Interrupt Generation Method of Digital Signal Measurement Board

The present invention relates to an interrupt generation method of a digital signal measuring board (DIB) of a remote monitoring and control system (hereinafter referred to as RMACS).

In the remote monitoring and control device, the digital signal measuring board is a digital signal, that is, the presence of errors in power equipment such as rectifiers, uninterruptible power systems, generators, leakage detection, air conditioner's operation status and door status. It receives the event signal and sends the above alarm to RCB. RCB generates an interrupt immediately after receiving an alarm event signal, suspends the running program and sends an alarm message to a remote local system.

In the existing digital signal measuring board, the processing of events can be divided into interrupt method and polling method.

The polling method generally uses a lot of interrupt methods because the processing of the event takes too long and an error may occur that causes the event to be lost. However, the conventional interrupt handling method has a problem of recognizing interrupts only for one state change.

In the RMACS to which the present invention is applied, there is a need for interrupt processing for both state changes such as alarm generation and cancellation.

1 is a system configuration to which the present invention is applied;

2 is a system functional block diagram to which the present invention is applied;

3 is a functional block diagram of a board to which the present invention is applied;

4 is a diagram showing the structure of a normal relay;

5 is a diagram showing the structure of a relay when an event occurs;

6 is a timing diagram of an interrupt generator.

In order to solve the above problem, the present invention adds a digital logic circuit for detecting a state change to generate an interrupt whenever a state change occurs. In addition, it is possible to set the use of the DIP switch to distinguish between the connected port and the unconnected port, and by reading the set value, it masks the interrupt of the part corresponding to the unconnected port. Interrupt is not generated.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

The present invention relates to an interrupt processing method of a digital signal input board of a remote monitoring controller (RMACS), and has a configurable function of a digital logic circuit portion, a connected and an unconnected port for detecting a state change.

1 shows a system configuration to which the present invention is applied.

The remote monitoring control device (RMACS) classifies the types of monitoring and control contacts into analog monitoring contacts, battery cell monitoring contacts, digital monitoring contacts, and digital control contacts. Analog monitoring contact refers to the monitoring of signals input through Transducers and Sensors. It includes voltage, current, frequency, temperature and humidity for phase change, rectifier, generator, UPS, etc. and has 24 contacts per board. .

The battery monitoring contact monitors the battery cell voltage and analyzes the data measured through the discharge test in local China to identify the defective cells. The number of contacts per board is 24.

Digital monitoring contact point outputs the operation status by power supply and environmental equipment On / Off. It monitors the normal operation and alerts in case of error and has 16 contacts per board. Digital control contacts are used to control the operating equipment in the country and have 16 contacts per board.

The Remote Monitoring Controller (RMACS) uses RMACS-specific protocols to monitor analog, battery and digital signals and communicate with the site's supervisory control terminal or local China system. Communicating with local China uses a dedicated / dial up modem with a baud rate of 2400 / 9600bps.

Figure 2 is a functional block diagram of a system to which the present invention is applied, main board (RCB), analog input board (AIB), cell input board (CIB), digital input board (DIB), digital control board (DOB), power supply It consists of supply board PSB and back board RMBB.

RCB is the main board of RMACS and directly controls access card through RMBB to monitor the power and environment in the country and notify the remote operator and analyze the operator's command to drive related equipment. Analog and battery-related signals are input to AIB and CIB, respectively. RCB controls analog switches and relays of AIB and CIB through a white board, switches ports to measure, and then controls analog switches in RCB sequentially. When the digital contact signal is input to DIB and requests an interrupt to RCB, RCB reads the status value of DIB and informs the remote operator. The operation of the power supply and the environmental device is performed by analyzing and controlling the ports to be controlled by receiving control commands from the RCB in the local China system.

3 is a functional block diagram of a digital signal input board (DIB).

The interrupt source 7 of the DIB is connected to the DIB using the relays of Figs. 4 and 5. In the initial state, a + 5V signal is input to the interrupt generator 5 as shown in FIG. However, when an event occurs, the GND signal is input to the interrupt generator 5 as shown in FIG. When the event is released, the signal is again configured as shown in FIG. 4 and the + 5V signal is input to the interrupt generator 5. Therefore, the occurrence of the event occurs in the falling edge (Falling Edge) state, the release occurs on the rising edge (Rising Edge).

Since the 8259A, which is an interrupt controller used in the DIB, recognizes an interrupt only at the rising edge, the interrupt generator 5 receives the above signal and recognizes both the part where the state change occurs (that is, the pearling edge and the rising edge part). To implement this, the 74HC123 monostable pulse generator is used for the interrupt generator. One alarm signal is composed of a monostable pulse generator in the pearling edge and the rising edge, respectively, and each output signal is AND gated and input to the 8259A interrupt controller. The waveforms for the interrupt generator 7, the interrupt generator 5, and the interrupt request unit 8 are as shown in FIG.

In addition, the port setting unit 2 used a DIP switch to distinguish between connected and unconnected ports among the 16 digital input contacts that can be input to the DIB. The set port information can be read by the RCB through the port status unit (1) and masked by the DIB's 8259A interrupt controller for the unconnected port so that no interrupt is generated for the unconnected port. The address decoding unit 4 receives the control signal of the RCB to select various devices on the DIB that the RCB can control. The operation display unit 5 shows the state information to confirm whether the control of the DIB is properly performed since the DIB is driven under the control of the RCB. Diagnosis function is available for the board by using the operation display part. In case of normal operation, green LED is turned on. The bus buffer section 6 causes the data, addresses, etc. of the RCB and RMBB to be transferred to the DIB via the bus buffer section.

The present invention implements a digital logic capable of detecting a state change in an interrupt generating unit so that both the occurrence and release of an event can be accepted as an interrupt and is simple and easy to implement. In addition, the connection port and the unconnected port can be set in advance so that interrupts to the unconnected port can be ignored. To allow RMACS to monitor ports 24 hours a day, the DIB allows mounting and dismounting even when power is applied. In addition, a total of 16 monitoring contacts can be accommodated in one board, which can reduce the construction cost when installed in a communication company or base station.

Claims (2)

In the digital signal measuring board detects the occurrence of an event from the source of the interrupt and generates an interrupt thereof. Interrupt is generated by detecting the pearling edge of the signal from the interrupt source, Detecting the rising edge of the signal from the interrupt source to generate an interrupt An interrupt generation method for a digital signal measuring board. The method of claim 1, The interrupt source is used to detect that an interrupt source that is not used by the DIP switch is masked and does not generate a signal. An interrupt generation method for a digital signal measuring board.