Multiplex data packet transmission system for measurement of atmospheric pressure, temperature, humidity

摘要

The system comprises one or more identically constructed transmitters (201) and identical receivers (203) for packets of data transmitted over a common channel with registration bits inserted by operation of e.g. a pushbutton (202). Each receiver has an initialisation key (204) and a device (205) signalling that the initialisation code is already in use by another transmitter. Allocation of the transmitter(s) to receivers is determined by the system which also sets the characteristic time intervals of transmission. The transmitters are powered only at these times, and the receivers only at the times assigned to their allocated transmitters.