A method of real-time detection of punctured vehicle tube by cladding capacitor-films in the inner tube and monitoring the capacitor/voltage variations
Publication Date: 2017-Jan-24
The IP.com Prior Art Database
This purpose of this article is to implement real time detection of punctured vehicle tube by applying capacitor/voltage theory rather than electric current alone and it selects a peculiar material as the dielectric, such as BaO2 BaO2 has a big distinct capacitor value than others. So it can detect rupture caused by both conductible and in-conductible objects immediately. However, the traditional inventions can either only detect conductible objects or not in a real-time detection.
A method of real-time detection of punctured vehicle tube by cladding capacitor-films in the inner tube and monitoring the
This invention is to detect punctured vehicle tubes immediately no matter what kind of material has punctured it.
This invention makes use of capacitor theory to detect the tube puncture in two ways, either detecting the voltage variation or detecting the
capacitor variation. Clad a film-formed capacitor in the inner side of the tube and attach a voltage/capacitor detector/sensor on the wheel to
monitor capacitor/voltage change. In the very beginning the capacitor has already been charged by batteries. So the voltage is always a number
above zero and the capacitor is a certain value. However, if the capacitor is punctured, its voltage will become zero if the puncture splinter is
conductible object or the capacitor capacity changes dramatically to another value if the puncture object is dielectric, which is exactly the point
this patent is describing.
Before the further illustration, let’s have a basic knowledge of the capacitor structures. The plate capacitor, for example, is composed of insulator
and two metal plates (such as the aluminum platinum paper which is very extensible and conductible as below). So it’s not hard to clad such a
thin film of capacitor to the inner side of a vehicle tube at first.
Let’s assume the vehicle tube is clad with the capacitor like below. The yellow object is a thin film of capacitor. The black block on the superior
side is a charge interface and can charge the capacitor with a battery. The black block on the inferior side is a voltage/capacity meter which can
read the voltage/capacitor of the capacitor.
Normally the capacitor is charged and there’s always a positive voltage difference, as seen below (U is always larger than zero) or Q is above
But once the tube is punctured, for example, by a nail as illustrated below, the capacitor will be short-circuited because nail conducts.
U becomes into zero. Q is released. The detector (the black block on the inferior side) detects the voltage difference between the two sides of the
capacitor and finds U become zero. Then it can send the alarm to the dashboard to aler...