Title:
CURRENT VALUE ACQUISITION METHOD AND LOAD CONTROL DEVICE
Document Type and Number:
Japanese Patent JP2015104943
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a current value acquisition method for detecting each current value flowing to a plurality of PWM-controlled switching elements and loads to enable accurate acquisition of each detected current value.SOLUTION: There is provided a current value acquisition method in a load control device 1, in which power from a DC power supply 31 is PWM-controlled by a plurality of switching elements 7-18 respectively and the PWM-controlled power is given to a plurality of loads 19-30 to detect each current value flowing to a plurality of the switching elements 7-18, and each detected current value is subjected to analog/digital conversion, and the resultant current value is acquired. A delay amount at the start point of time of a PWM cycle of each of the switching elements 7-18, a PWM cycle, a duty ratio, a rising start point of a pulse waveform, a stable state start point of the pulse waveform, and a fall start point of the pulse waveform are collected to generate a table 6. Each point of time for acquiring each current value through the analog/digital conversion is set on the basis of the generated table 6 and a required time of the analog/digital conversion.
Inventors:
MAEDA KAZUTERU
Application Number:
JP2013246524A
Publication Date:
June 08, 2015
Filing Date:
November 28, 2013
Export Citation:
Assignee:
AUTO NETWORK GIJUTSU KENKYUSHO
SUMITOMO WIRING SYSTEMS
SUMITOMO ELECTRIC INDUSTRIES
SUMITOMO WIRING SYSTEMS
SUMITOMO ELECTRIC INDUSTRIES
International Classes:
B60R16/02; H02H5/04
Domestic Patent References:
| JPH08298210A | 1996-11-12 | |||
| JP2004247834A | 2004-09-02 | |||
| JP2010273445A | 2010-12-02 |
Attorney, Agent or Firm:
Hideno Kono
Nobuo Kono
Nobuo Kono