Bomb sensor system

A sensor system for monitoring an event at a plurality of points using a channel for each point wherein said system comprises;

• detector means individual to each channel for detecting a pulse associated with the event to define the time of arrival at the point for the individual channel;
• timing means comprising a counter, a timing pulse source providing a train of timing pulses at a given interval, timing input gate means coupling the timing pulse source to a clock input of the counter, a timing bus comprising N conductors coupled to parallel outputs of the counter on which a count value is encoded;
• command means comprising start detector means for detecting a start of an event and means set in response thereto for enabling the input gate means to start the counter running at a time designated t0;
• channel register means individual to each channel, each having N parallel data input terminals coupled to the timing bus, a gate control terminal for controlling the loading of data, an output control terminal for enabling placing the data on a data bus, the gate control terminal being coupled to the detector means to load the the count value from the timing bus upon the detection of a pulse to thereby record the time with respect to T0;
• data selector means coupled to the output control terminals of the channel register means for addressing the channel register means of each channel in turn and reading the data onto the data bus;
• a memory unit having a set of address inputs coupled to the data selector means, and data terminals coupled to the data bus for storing the data from the channel register means as each channel is addressed by the data selector means;
• transceiver means coupling the memory unit to a computer interface line for receiving addresses from a computer and coupling them to the memory unit, and for reading data from the memory unit for each address and supplying it to the computer.