Wireless remote with control code learning

摘要

A wireless remote control system provides very low power operation and automatic addressing. In one disclosed example, the remote-control transmitter is battery operated, the receiver is powered from the AC line, and the system functions as a remotely operated switch to control lights or other devices or appliances. Battery life is extremely long, limited only by corrosion and other shelf-life issues. The transmitter is automatically programmed by a receiver using a very short range auxiliary signaling system when the transmitter is brought into close proximity to a receiver. The auxiliary signaling system transfers operational parameters from the receiver to the transmitter, enabling the transmitter to operate with the correct codes and on the correct frequency. Multiple switch transmitters may control a single operating device, and so that remotes can be added arbitrarily. Once programmed, the transmitter sends out a repetitive, unitized message in a continuous sequence to control the receiver.

主权项

1. An electrical power control system, comprising:
a transmitter unit and a receiver unit, the receiver unit including:
a power control device operative to route electrical power from a source to a load in response to an encoded command message received from the transmitter unit,a device for storing one or more operational parameters enabling the command from the transmitter unit to be recognized, decoded and executed by the receiver unit, the operational parameters including the frequency to be used by the transmitter unit in communicating with the receiver unit;a wireless, short-range transmitter operative to program the transmitter unit by communicating the parameters to the transmitter unit when the transmitter unit is positioned is in close physical proximity to the receiver unit,a radio-frequency (RF) receiver for receiving the encoded command message in modulated form from the transmitter unit;circuitry for demodulating and decoding the command from the encoded message for execution by power control device, and wherein the transmitter unit includes:a short-range receiver for receiving the parameters from the short-range transmitter of the receiver unit,a memory for storing the parameters received,a manually operated user control operative the generate a command,circuitry for encoding the command into an encoded command message,a modulator for modulating the encoded command message, andan RF transmitter operative to transmit the modulated, encoded command message to the receiver unit using the parameters received and stored by the transmitter unit during programming.