KR960027314A - Printing Data Output Buffer Circuit of Electronic Security System - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

The present invention relates to a printer for data output of an electronic security system, and more particularly, to a printing data output buffer circuit of an electronic security system that communicates with a main controller using RS-422 to transmit and receive various types of data.

2. The technical problem to be solved by the invention

It is connected to the main controller of the electronic security system and provides a circuit that outputs various data including year, yuan, day, hour, and minute through printer paper for data generated by various state changes of the system.

3. Summary of Solution to Invention

A power supply unit for supplying power to the machine, a display unit for displaying the power-on state and the machine abnormality state, an operation unit for manipulating the test paper feeding, a detection unit for detecting the shortage of the printer and the lid open state of the machine, and the current time It consists of a current time checking unit for checking the data, a driver for printing data, a communication unit for transmitting and receiving data in the RS-422 method, and a circuit monitoring unit for checking power monitoring.

Description

Printing Data Output Buffer Circuit of Electronic Security System

Since this is an open matter, no full text was included.

1 is a block diagram according to the present invention.

Claims (5)

In the output buffer circuit of the printer connected to the main controller, the central processing unit 101 for controlling the overall function, the power supply unit 102 for supplying power to the device, the display unit 103 for displaying the current state of the device, The operation unit 104 operated for printer paper lifting and testing, the detection unit 105 for detecting an abnormal state of the machine, and the current time are checked and the current time is backed up by setting the time from the main controller. The current time kets 106, a driver 107 for driving a mechanism for printing output data of the device, a communication unit 108 for communicating with the main controller, and a voltage applied to the device, And a circuit monitoring unit (109) for resetting the processing device (101). According to claim 1, The display unit 103 is connected to the driving unit for driving a test or alarm signal of the central processing unit 101, the green LED indicating the power supply state connected to the power supply unit, the current communication is made A printing data output buffer circuit for an electronic security system, characterized in that the display is distinguished by a yellow LED. The test switch (SW1) according to claim 1, wherein the operation unit (104) is connected to the central processing unit (U1) to print a message " PRINTER TEST… SECOM " And a line feed switch (SW1) connected to the central processing unit to push a line of printer paper into the central processing unit. The transistor of claim 1, wherein the detection unit (105) detects the printer paper shortage by detecting the light emitting diode continuously operating and periodically checking in the central processing unit at the time when the paper being used is almost separated. (Q3) and a photocoupler (PT1) which checks the central processing unit periodically and detects that the device lid is opened. 2. The line driving circuit of claim 1, wherein the driving unit 107 is connected to the central processing unit to line drive the data to be printed to latch the data to be printed, and when the data is printed on the central processing unit, And a motor driving state input unit for applying a detection signal, and a variable oscillation unit for varying a signal for controlling the contrast of a data factor in the central processing unit. ※ Note: The disclosure is based on the initial application.