초록 ▼

The present invention relates to compact solid state silicon-based condenser microphone systems suitable for batch production. The combination of the different elements forming the microphone system is easier and more economical to manufacture compared to any other system disclosed in prior art. In

The present invention relates to compact solid state silicon-based condenser microphone systems suitable for batch production. The combination of the different elements forming the microphone system is easier and more economical to manufacture compared to any other system disclosed in prior art. In addition the invention is compatible with electronic equipment manufacturing processes, such as SMD pick and place techniques. The invention uses a transducer chip comprising a chamber, a diaphragm that is positioned at the first lower surface and covering the second opening of the transducer chip. The transducer chip is flip-chip mounted onto a post-processed chip also comprising a chamber. The microphone system can be electrically connected to an external substrate by conventional techniques such as wire bonding.

대표청구항 ▼

The present invention relates to compact solid state silicon-based condenser microphone systems suitable for batch production. The combination of the different elements forming the microphone system is easier and more economical to manufacture compared to any other system disclosed in prior art. In

The present invention relates to compact solid state silicon-based condenser microphone systems suitable for batch production. The combination of the different elements forming the microphone system is easier and more economical to manufacture compared to any other system disclosed in prior art. In addition the invention is compatible with electronic equipment manufacturing processes, such as SMD pick and place techniques. The invention uses a transducer chip comprising a chamber, a diaphragm that is positioned at the first lower surface and covering the second opening of the transducer chip. The transducer chip is flip-chip mounted onto a post-processed chip also comprising a chamber. The microphone system can be electrically connected to an external substrate by conventional techniques such as wire bonding. d pressure is below the pressure indicative of a malfunction in the lubrication system, delaying the alarm procedure for a predetermined period of time if the engine is in a period of change in engine speed sufficient to cause a measurable lag in lubricant pressure, determining whether the engine is operating at a speed below a predetermined speed, and activating the alarm procedure if the engine is operating at a speed below the predetermined speed. 10. The method of claim 9, wherein the predetermined speed is a speed corresponding to an idle speed.11. The method of claim 9 further comprising sensing an engine temperature, determining whether the engine is operating at a temperature below a predetermined temperature, and delaying the alarm procedure only if the engine is not operating at a temperature below the predetermined temperature.12. An outboard motor comprising an engine, a lubricant pump powered by the engine, the lubricant pump in communication with a lubricant supply passage, a pressure sensor positioned along the supply passage, the pressure sensor in communication with a control unit, the control unit activating an alarm sequence when the pressure sensor emits a signal indicative of an abnormally low pressure within the supply passage after a delay of a predetermined period of time from when the senor emits the signal when the engine is in a period of engine speed change sufficient to cause a measurable lag in lubricant pressure, the control unit also being configured to activate the alarm sequence without said delay if the engine is not in the period of engine speed. 13. The outboard motor of claim 12, wherein the control unit delays activating the alarm sequence only after the engine has reached a warmed-up operating condition, which is based upon a sensed operating temperature.14. The outboard motor of claim 12, wherein the control unit delays activating the alarm sequence only after the engine is operating above a predetermined low-speed.15. The outboard motor of claim 14, wherein the predetermined low-speed is an idle speed.16. The outboard motor of claim 12, wherein the alarm sequence comprises activating at least one alarm selected from the group consisting of auditory alarms, visual alarms, tactile alarms, or combustion disabling alarms.17. The outboard motor of claim 12, wherein the abnormally low pressure is a pressure lower than a pressure at which an adequate supply of lubricant is maintained to the engine during minimum engine speed.18. The outboard motor of claim 12, wherein the abnormally low pressure is a pressure lower than a pressure at which an adequate supply of lubricant is a maintained to the engine during maximum engine speed.19. The outboard motor of claim 12, wherein the engine speed change sufficient to cause a measurable lag in lubricant pressure is indicated by output from an engine speed sensor and a throttle angle sensor.20. The outboard motor of claim 12, wherein the engine speed change sufficient to cause a measurable lag in lubricant pressure is indicated by fluctuations in output from an engine speed sensor.21. The outboard motor of claim 12, wherein the engine speed change sufficient to cause a measurable lag in lubricant pressure is indicated by output from a throttle angle sensor.22. A malfunction detection method comprising sensing an engine speed, sensing a rate of change in engine speed, sensing a pressure in the lubrication system, determining if the sensed pressure is below a minimum pressure indicative of a malfunction in the lubrication system, activating an alarm procedure if the sensed pressure is below the pressure indicative of a malfunction in the lubrication system, delaying the alarm procedure for a predetermined period of time if the engine is in a period of change in engine speed sufficient to cause a measurable lag in lubricant pressure, sensing an engine temperature, determining whether the engine is operating at a temperature below a predetermined temperatur