学位論文

自動車車体の微小振動計測－自動車内の生体情報検知とセキュリティ応用－

MEASUREMENT OF MICRO VIBRATION OF CAR--DETECTION OF BIO-INFORMATION IN THE CAR AND APPLICATION FOR SECURITY

jpn

2010-03-24

Not Applicable (or Unknown)

2010-03-24

修士(工学)

工学研究科システム工学専攻; 指導教授: 渡辺嘉二郎

A penetration of cars continues to grow, and a wide variety of crimes that use a car increases concurrently. Examples of these crimes include the illegal immigration and intrusion, which are occurred by human hiding amongst the car. In case of crimes, border controls and security guards check up on car by human beings or X-ray. These have problems such as a false recognition, a cost of appointments. In the specific facilities, other problems by hiding behind in a car occur. That is an invasion to the gated community which is an area of houses and condominium buildings etc., where a fence or wall surrounds the area and the entrance is guarded. In addition, the problem that an infant dies of heat stroke due to letting alone in a car for a long time increases. Against the above-mentioned cases, the mean which find out human in a car is effective. In this paper, we aim to develop the simple system which judges a manned car or an unmanned car. The system determines by means of checking if a vibration of car includes a vibration of vital signs by human in the car. A sensing device under the car can measure the vibrations of standing vehicle. The system is comprised of a sensing device, a filter circuit, and a judging circuit. We developed two sensing devices, one employs a piezoelectric ceramic sensor, another employs a capacitor microphone sensor. And the filter circuit extracts biological signals in a signal of a data from the sensing device. The judging circuit draws a conclusion from a parameter calculated from the data through the filter circuit.

Thesis