Title:
電圧検出装置、及び電池の状態制御装置
Document Type and Number:
Japanese Patent JP4561921
Kind Code:
B2
Abstract:
In a voltage detecting apparatus, a voltage controlled oscillator, when an input voltage is applied thereto, outputs a signal with a logical value that is periodically inverted. A detector counts a number of logical inversion of the output signal from the voltage controlled oscillator over an interval between edges of pulses of a pulse signal to thereby generate, based on the counted number of logical inversion, digital data as a detected result of the input voltage. A determiner determines whether a reduction of a time required to detect the input voltage is higher in priority than an increase of a resolution of detection of the input voltage. A variably setting unit variably sets a frequency of the pulse signal based on a result of the determination of whether the reduction of the time required to detect the input voltage is higher in priority than the increase of the resolution of detection of the input voltage.
Inventors:
Yamamoto Keizen
Hiroshi Tamura
Hiroshi Tamura
Application Number:
JP2009043314A
Publication Date:
October 13, 2010
Filing Date:
February 26, 2009
Export Citation:
Assignee:
株式会社デンソー
International Classes:
H03M1/50; B60L3/00; B60L50/16; H03K3/03
Domestic Patent References:
| JP2007221659A | ||||
| JP2005229263A | ||||
| JP61101125A | ||||
| JP4284027A |
Attorney, Agent or Firm:
Tsuyoshi Yamada
Yasunari Kurita
Kyoko Hino
Satoru Ando
Yasunari Kurita
Kyoko Hino
Satoru Ando