Wire holder for automatically managing household electric appliances by computer

Abstract

The invention provides a wire holder for automatically managing household electric appliances by a computer. In the wire holder, a first pin CD (Carrier Detect), a sixth pin DSR (Data Set Ready), an eighth pin CTS (Clear To Send) and a ninth pin RI (Ring Indicator) of an RS232C interface are connected to an output anode of a stabilized voltage supply circuit through a pull-up resistor respectively, the four pins form four pairs of wiring terminals of a sensor interface with the output cathode of the stabilized voltage supply circuit respectively; a fourth DTR (Data Terminal Ready) and a seventh RTS (Request To Send) of the RS232C interface are connected to signal input ends of an alternating current electronic switching circuit and a light current electronic switching circuit through an isolation diode respectively; an alternating current input end of the stabilized voltage supply circuit is connected in parallel with a lightning and surging protection circuit, and is connected to commercial power through a commercial power cord and a plug thereof; and the output cathode of the stabilized voltage power circuit is connected with a fifth pin GND (Signal Ground) of the RS232C interface. By adopting the wire holder, the interface between the computer and the household electric appliance is formed to cooperate with various sensor operations under management of the computer, so that the connected household electronics or household electric appliances can be detected and automatically operated, or used independently. The wire holder is easy to manufacture, and has low cost.

Description

technical field [0001] The invention belongs to the technical field of applied electronics, and in particular relates to an interface device between a computer and a home appliance for realizing the automation of home electronics and electric appliances. Background technique [0002] Home automation is one of the gorgeous chapters that people look forward to in the English teaching materials of universities, masters and doctoral students over the years after the reform and opening up. The home intelligent system appeared in the 1970s. In the mid-1980s, home intelligent control machines appeared in the European and American markets. The first intelligent building was also built and put into use in the United States in January 1984. In 1998, the Internet was born in the United States. Household appliances, classic "intelligent home" model systems For example: the "Future Home" home intelligent system held in Singapore in 1998, and the Longworks "Networked Home" demonstration s...

AI Technical Summary

Problems solved by technology

Computers and their technologies have been popularized, and corresponding computer-controlled or computer-network-controlled home appliance automation control products should be logical, but it is difficult to find traces of related products

The "Electronic Circuit" website sells and announces a product: "PC serial port controller / computer control switch: CTL-8MR", its working power supply: DC 12V / 24V, load capacity: 30V / 5A, 250V / 5A, The upper computer is a computer, using Visual Basic programming, the lower computer is the product uses a single-chip microcomputer, using assembly language programming, PC (personal computer) is based on its RS232 interface and software, through which the controller can control the connection of 8 external devices On and off; the shortcoming is that there is no signal input channel, and the condition detection of home appliances cannot be carried out

Among them, the recommended products are commercially available time relays, which are not sold in the home appliance industry, but belong to automatic control electronic products, including single-chip microcomputer, electronic technology or mechanical time relays, generally designed with one or two pairs of strong current The output switch can undertake the main task of home appliance automation, that is, it can turn on or off home appliances regularly according to the predetermined schedule, and the price is as low as less than 100 yuan. Tasks of the work program

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