04-06-2020 дата публикации
Номер: US20200178369A1
A multiple location load control system may comprise a main load control device and an accessory load control device. The main load control device may control an amount of power delivered to an electrical load from an AC power source using a control circuit and a controllably conductive device. The accessory load control device may be coupled to the main load control device via an accessory terminal. The accessory load control device may detect a user input for changing a characteristic of the electrical load and may send a signal to the main load control device indicating the user input. The main load control device may detect a pattern of the signal based on a threshold and further determine the user input in response to the detected pattern. The main load control device may adjust the threshold based on line/load conditions of the multiple location load control system. 1. A load control device configured to operate in a multiple location load control system for controlling an amount of power delivered to an electrical load from an AC power source , the load control device comprising:a first main terminal and a second main terminal, the load control device configured to conduct a load current from the AC power source to the electrical load via the first and second main terminals;an accessory terminal configured to be electrically coupled to an accessory control device and receive an input signal from the accessory control device, the input signal representing an actuation state of the accessory control device;a multi-location circuit configured to sense the input signal and generate a multi-location signal in response to sensing the input signal; and determine a pattern of the multi-location signal over one or more half cycles of an AC mains line voltage generated by the AC power source, the pattern determined based on a high threshold and a low threshold and the control circuit configured to adjust the high threshold based on an indication of a magnitude of a ...
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