Title:
AN APPARATUS AND METHOD FOR REDUCING ENERGY CONSUMPTION IN MONITORING MEANS OF A PLURALITY OF PIEZOELECTRIC COMPONENTS
Document Type and Number:
WIPO Patent Application WO/2011/158155
Kind Code:
A3
Abstract:
An apparatus (1, 4) for reducing energy consumption in monitoring means of a plurality of piezoelectric components, the apparatus (1, 4) comprises: - a plurality of piezoelectric components (102, 104, 106; 72, 74, 76); - monitoring means (122, 124, 126; 62, 64) for monitoring the status of the piezoelectric components (102, 104, 106; 72, 74, 76), said monitoring means (122, 124, 126; 62, 64) having two states that are active and inactive; and wherein: - the piezoelectric components (102, 104, 106; 72, 74, 76) which are connected in parallel to each other and a current detecting circuit (132; 68) that comprises: i) a switch (54) and ii) a resistor (52) that is connected in parallel to said switch (54), and iii) a controller (58) having two states that are active and inactive, the controller (58) configured to: - open the switch (54), in response to the controller (58) being in the inactive state; and - close the switch (54), in response to the controller (58) being in the active state, the closing of the switch (54) triggering a state change in the monitoring means (122, 124, 126; 62) from their inactive state to their active state. The patent application has also an independent method claim.
Inventors:
ROENNING KASPER (FI)
TANHUA SAKARI (FI)
LAITINEN PAULI (FI)
VAN DALEN HARRY (NL)
TANHUA SAKARI (FI)
LAITINEN PAULI (FI)
VAN DALEN HARRY (NL)
Application Number:
PCT/IB2011/052502
Publication Date:
February 16, 2012
Filing Date:
June 08, 2011
Export Citation:
Assignee:
AITO B V (NL)
ROENNING KASPER (FI)
TANHUA SAKARI (FI)
LAITINEN PAULI (FI)
VAN DALEN HARRY (NL)
ROENNING KASPER (FI)
TANHUA SAKARI (FI)
LAITINEN PAULI (FI)
VAN DALEN HARRY (NL)
International Classes:
H01L41/08
Domestic Patent References:
| WO2007088390A1 | 2007-08-09 |
Foreign References:
| EP1555747A1 | 2005-07-20 | |||
| JP2002217462A | 2002-08-02 | |||
| JPS63167684A | 1988-07-11 | |||
| US20040169545A1 | 2004-09-02 |
Attorney, Agent or Firm:
VÄISÄNEN, Jaakko (Vankanlähde 7, Hämeenlinna, FI)
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