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다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
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Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0205904 (2011-08-09) |
등록번호 | US-8674654 (2014-03-18) |
발명자 / 주소 |
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출원인 / 주소 |
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대리인 / 주소 |
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인용정보 | 피인용 횟수 : 3 인용 특허 : 582 |
An apparatus and a method of monitoring a battery in an automotive vehicle are provided. An output is provided which can be a relative output as a function of minimum and maximum parameters of the battery.
1. A battery monitor for monitoring a battery of an automotive vehicle, comprising: a voltage sensor configured to monitor a voltage across the battery;a current sensor configured to monitor an electrical current through the battery;an analog to digital converter configured to convert sensed current
1. A battery monitor for monitoring a battery of an automotive vehicle, comprising: a voltage sensor configured to monitor a voltage across the battery;a current sensor configured to monitor an electrical current through the battery;an analog to digital converter configured to convert sensed current from the current sensor to a digital value;a constant offset configured to reduce a quiescent current draw from the sensed current prior to digitizing the sensed current by the analog to digital converter; anda processor configured to measure a parameter of the battery as a function of sensed current and sensed voltage. 2. The apparatus of claim 1 wherein the processor enters a sleep mode during periods of vehicle inactivity and is activated from the sleep mode if current is greater than at least the constant offset. 3. The apparatus of claim 1 wherein the constant offset has a first value during vehicle operation and a record value during vehicle inactivity. 4. The apparatus of claim 1 wherein the processor integrates digitized current values over time. 5. The apparatus of claim 1 the processor uses the constant offset for calculations of the digitized current is less than a threshold. 6. The apparatus of claim 1, including: a communication link configured to couple to a data bus of the vehicle; andwherein the processor is further configured to receive a signal from the data bus indicative of operation of an electrical component of the vehicle and responsively wake up from a sleep mode to monitor the electrical current through the battery using the current sensor. 7. The apparatus of claim 6 wherein the processor re-enters the sleep mode after operation of the electrical component has terminated. 8. A battery monitor for monitoring a battery of an automotive vehicle, comprising: a current sensor configured to monitor an electrical current through the battery;a communication link configured to couple to a data bus of the vehicle; anda processor configured to receive a signal from the data bus indicative of operation of an electrical component of the vehicle and responsively wake up from a sleep mode to monitor the electrical current through the battery using the current sensor. 9. The apparatus of claim 8 wherein the processor re-enters the sleep mode after operation of the electrical component has terminated. 10. The apparatus of claim 8 wherein the signal indicates a door of the vehicle has opened.
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