JPS6019286U - Analog output terminal for remote control system - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

Fig. 1 is a basic configuration diagram of a remote control system to which the present invention is applied, Fig. 2 is a block diagram of a conventional example, Fig. 3 is a block diagram of an embodiment of the present invention, and Fig. 4 is a time chart of the same. , 1 is a base unit, 2 is a terminal device, 3 is a transmission line, 4 is a signal receiving circuit, 8 is a counter, 11 is an analog switch that constitutes a second charging/discharging circuit, 13 is a (first) charging/discharging circuit C2 is a capacitor.

Claims (1)

[Claims for Utility Model Registration] In a remote control system in which a load in a remote location is controlled from a base unit through a terminal device using digital signal transmission, control data is output as data received from signals on a transmission line. A signal receiving circuit that converts the control data into a pulse time width by presetting the control data output from this signal receiving circuit and counting the clock, and a counter that controls charging and discharging of the capacitor using this time width conversion pulse. Depending on the charging time of this capacitor, the charging/discharging circuit that converts digital control data to analog data and the main unit signal stop [. an analog output terminal device for a remote control system, comprising: a second charging/discharging circuit that controls the load equipment to operate safely by forcibly charging or discharging the capacitor by detecting that the capacitor is turned on;