US 7,079,046 B2 · Multi-point data acquisition apparatus

Abstract

An object of the present invention is to realize a multi-point data acquisition apparatus which enables communication with multiple measurement modules at high speed. The present invention improves upon a multi-point data acquisition apparatus comprising a main module which performs serial communication through a serial bus to multiple measurement modules connected to a single-system serial bus. The main module of the present invention is characterized in that it comprises the following: a timing generating unit which outputs a first timing signal and second timing signal; a setting unit which sets multiple transmission destinations which are measurement modules to be engaged in serial communication, and multiple transmission contents, based on the first timing signal; and a communication processing unit which holds the multiple transmission destinations and multiple transmission contents set by the setting unit, and, based on the second timing signal, sequentially sends transmission contents through the serial bus to the multiple measurement modules set as transmission destinations, performing serial communication.

Claims25

Dependent claims

A multi-point data acquisition apparatus comprising a main module which performs serial communication through a serial bus to multiple measurement modules connected to a single-system serial bus, wherein said main module comprises:

a timing generating unit which outputs a first timing signal and second timing signal;
a setting unit which sets multiple transmission destinations which are measurement modules to be engaged in serial communication, and multiple transmission contents, based on said first timing signal from said timing generating unit;
and
a communication processing unit which holds said multiple transmission destinations and multiple transmission contents set by said setting unit, and, based on said second timing signal from said timing generating unit, sequentially sends transmission contents through said serial bus to said multiple measurement modules set as transmission destinations, performing serial communication.

1 more element

a setting unit which sets a prescribed module, among said multiple measurement modules, as a polling destination;
a communication processing unit which collects data by polling from said measurement module set as said polling destination by said setting unit;
holds a communication history based on a communication content at the time of data collection;
and provides notification of said communication content to said setting unit;
and
a received-data storage unit which stores data received by said communication processing unit;
and said communication processing unit performs data collection by polling from said measurement modules which do not hold said communication history.

4 more elements

a timing generating unit which outputs timing signals in prescribed periods;
a setting unit which sets transmission contents for a prescribed measurement module among said multiple measurement modules;
and
a communication processing unit which receives data by sequentially polling said multiple measurement modules, and sends said transmission contents to said prescribed measurement module set by said setting unit based on a timing signal output from said timing generating unit;
and, when said timing signal is input, said communication processing unit cancels the polling of the next measurement module and sends said transmission contents.

2 more elements

A multi-point data acquisition apparatus comprising a main module which is connected to a single-system serial bus, transmits measurement-start commands through said serial bus in prescribed measurement periods, and receives measurement data, said multi-point data acquisition apparatus further comprising multiple measurement modules which perform measurements after receiving a measurement-start command from said main module through said serial bus;

hold said measurement data from said measurements;
and transmit said measurement data to said main module after receiving the next measurement-start command.

Dependencies are inferred from the claim text.

Multi-point data acquisition apparatus

Life of this patent

Multi-point data acquisition apparatus

Life of this patent

Abstract

Claims25