Solar power system for electronic parking meter
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 2, 1989
Issued Date -
N/A
app pub date -
Mar 25, 1988
filing date -
Apr 16, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A solar power system for an electronic parking meter. At least one solar cell array is connected to the anode of a first diode and at least one current regulating diode has its anode connected to a cathode of the first diode. At least one storage capacitor is connected between a cathode of the current regulating capacitor and ground. At least one second diode has its anode connected to the storage capacitor and has its cathode connected to an input of a voltage regulator. An output of the voltage regulator provides a supply voltage for the electronic parking meter. The input of the voltage regulator is also connected to the cathode of the first diode. A monitor circuit monitors a voltage level at the input of the voltage regulator. A microprocessor is connected to the monitor and when the voltage level decreases below a first threshold, the microprocessor shuts down the electronic parking meter in an orderly manner. When the electronic parking meter is shut down, the voltage regulator outputs a reset signal when the voltage level at the input of the voltage regulator exceeds a second threshold level, the reset signal is received by the microprocessor.
First Claim
Family
International Classification(s)
- [Classification Symbol]
- [Patents Count]
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully