Inertially operated piezoelectric energy harvesting electronic circuitry

An event detection device responsive to an acceleration pulse event, the device comprising:

• a low-voltage event detection circuit (LVEDC), the circuit comprising:
• an input configured to receive an input voltage over a duration responsive to one or more acceleration pulse events;
• an electrical storage device coupled to the input and configured to accumulate a charge and configured to produce a detection signal at an output in response to the accumulated charge indicating that the one or more acceleration pulse events met predetermined threshold magnitude and/or duration limit(s);
• an energy dissipating device coupled to the electrical storage device and configured to dissipate the accumulated charge following the one or more acceleration pulse events and not to substantially dissipate the accumulated charge during the one or more acceleration pulse events;
• and
• a voltage limiting device coupled to the electrical storage device and configured to limit voltage received by the electrical storage device from the input;
• and
• a bridge wire and a switch circuit, wherein the switch circuit is coupled to the output and is configured, when the detection signal is produced, to provide current produced by the input voltage to the bridge wire.

An event detection device responsive to an acceleration pulse event, the device comprising:

• a low-voltage event detection circuit (LVEDC), the circuit comprising:
• an input configured to receive an input voltage over a duration responsive to one or more acceleration pulse events;
• an electrical storage device coupled to the input and configured to accumulate a charge and configured to produce a detection signal at an output in response to the accumulated charge indicating that the one or more acceleration pulse events met predetermined threshold magnitude and/or duration limit(s);
• an energy dissipating device coupled to the electrical storage device and configured to dissipate the accumulated charge following the one or more acceleration pulse events and not to substantially dissipate the accumulated charge during the one or more acceleration pulse events;
• and
• a voltage limiting device coupled to the electrical storage device and configured to limit voltage received by the electrical storage device from the input;
• wherein the energy dissipating device comprises a diode with a cathode of the diode coupled to the input and an anode of the diode coupled to the electrical storage device, wherein the diode is configured to have a backward leakage draining the charge in the absence of the acceleration pulse events and in the absence of the one or more acceleration pulse events meeting the predetermined threshold magnitude and/or duration limit(s).

An event detection device responsive to an acceleration pulse event, the device comprising:

• a low-voltage event detection circuit (LVEDC), the circuit comprising:
• an input configured to receive an input voltage over a duration responsive to one or more acceleration pulse events;
• an electrical storage device coupled to the input and configured to accumulate a charge and configured to produce a detection signal at an output in response to the accumulated charge indicating that the one or more acceleration pulse events met predetermined threshold magnitude and/or duration limit(s);
• an energy dissipating device coupled to the electrical storage device and configured to dissipate the accumulated charge following the one or more acceleration pulse events and not to substantially dissipate the accumulated charge during the one or more acceleration pulse events;
• and
• a voltage limiting device coupled to the electrical storage device and configured to limit voltage received by the electrical storage device from the input;
• a piezoelectric device coupled to the input and configured to generate the voltage over the duration responsive to the one or more acceleration pulse events;
• and
• a voltage divider circuit, wherein the input is configured to receive a portion of the voltage generated by the piezoelectric device through the voltage divider circuit.

An event detection device responsive to an acceleration pulse event, the device comprising:

• a low-voltage event detection circuit (LVEDC), the circuit comprising:
• an input configured to receive an input voltage over a duration responsive to one or more acceleration pulse events;
• an electrical storage device coupled to the input and configured to accumulate a charge and configured to produce a detection signal at an output in response to the accumulated charge indicating that the one or more acceleration pulse events met predetermined threshold magnitude and/or duration limit(s);
• an energy dissipating device coupled to the electrical storage device and configured to dissipate the accumulated charge following the one or more acceleration pulse events and not to substantially dissipate the accumulated charge during the one or more acceleration pulse events;
• and
• a voltage limiting device coupled to the electrical storage device and configured to limit voltage received by the electrical storage device from the input;
• and
• a current amplifying circuit that amplifies current produced as a result of the accumulated charge when the detection signal is produced.

An event detection device responsive to an acceleration pulse event, the device comprising:

• a piezoelectric device coupled configured to generate an input voltage over the duration responsive to the one or more acceleration pulse events;
• and
• a low-voltage event detection circuit (LVEDC), the circuit comprising:
• an electrical storage device coupled to the piezoelectric device and configured to accumulate a charge due to the input voltage and configured to produce a detection signal at an output in response to the accumulated charge indicating that the one or more acceleration pulse events met predetermined threshold magnitude and/or duration limit(s);
• an energy dissipating device coupled to the electrical storage device and configured to dissipate the accumulated charge following the one or more acceleration pulse events and not to substantially dissipate the accumulated charge during the one or more acceleration pulse events;
• and
• a voltage limiting device coupled to the electrical storage device and configured to limit voltage received by the electrical storage device from the piezoelectric device;
• and
• a voltage divider circuit, wherein the electrical storage device is configured to receive a portion of the voltage generated by the piezoelectric device through the voltage divider circuit.