The present application is based on, and claims priority from, Korean Application Serial Number 10-2005-0103766, filed on Nov. 1, 2005, the disclosure of which is hereby incorporated by reference herein in its entirety.
The present invention relates to a sensor and apparatus for measuring flow electric potential, which enable the evaluation of the degree of electrodeposition on the body or chassis of a vehicle.
With regard to the conventional evaluation of the degree of electrodeposition on the body or chassis of a vehicle, engineers have been directly sent to a work site in a painting line, to evaluate the degree of electrodeposition.
Accordingly, at the time of the development of vehicles, the evaluation of the degree of electrodeposition is first conducted and then following-up measures are taken, so that problems occur in that the development of vehicles is delayed, and costs increase due to the personnel expenses incurred for the engineers directly sent to the work site. Furthermore, currently, the development of a sensor for monitoring and measuring the amount of charge, that is, flow electric potential, of the body or chassis of a vehicle in the painting line in real-time at the time of the development of vehicles, is insufficient.
Therefore, the inventor of the present invention proposes the present invention in response to the necessity of a sensor for monitoring information about a painting history in real time when an electrodeposition coating process is performed.
Embodiments of the present invention provide a sensor and apparatus for measuring flow electric potential, which enable the evaluation of the degree of electrodeposition on the body or chassis of a vehicle.
A sensor for measuring flow electric potential according to the present invention includes a base plate part mounted on the outer and inner body or chassis of a vehicle, and electrically connected to ground. A dielectric polymer member is patterned and formed on the base plate part. A positive (+) electrode terminal is connected to the dielectric polymer member and is configured to have a positive (+) polarity, and a negative (−) electrode terminal is connected to the base plate part and is configured to have a negative (−) polarity. An insulation part is formed to insulate the positive (+) and negative (−) electrode terminals from each other.
For a better understanding of the nature and object of the present invention, reference should be made to the following detailed description with the accompanying drawings, in which:
a is a diagram showing the measurement of the degree of electrodeposition on the body of a vehicle using the sensor according to the present invention;
b is a diagram showing the measurement of the degree of electrodeposition on the chassis of a vehicle using the sensor according to the present invention; and
Herein below, a preferred embodiment of the present invention will be described with reference to the accompanying drawings.
The construction of a sensor for evaluating the degree of electrodeposition of paint on the body or chassis of a vehicle (that is, the measurement of the amount of charge of paint using a sensor) according to the present embodiment is described with reference to
As shown in
The base plate part 2 according to the present embodiment is made of a polymer material.
Furthermore, the dielectric polymer member 4 is formed to have a tentacle shape, and the sensing region A of the sensor 10 has a circular shape, thus being formed to have a wide sensing region.
Furthermore, the amount of charge of paint applied to the body and the chassis is calculated using the following Equation 1:
where C is capacitance,
t is the thickness of the dielectric polymer member,
A is the contact area of the sensor,
e0 is the intrinsic dielectric constant possessed by the dielectric polymer member, and
er is the dielectric constant of paint that comes into contact with the sensor.
From Equation 1, it can be appreciated that a large capacitance (or a large amount of charge) implies that paint is adhered well to the measured part of the body or chassis of the vehicle in proportion to the value of the capacitance, and the capacitance varies with the thickness and dielectric constant of the measured part of the body or chassis of the vehicle.
Meanwhile, the sensor is manufactured using patterning and deposition processes, which are illustrated in the manufacturing process of
As shown in
The above-described process of manufacturing the sensor for measuring flow electric potential according to the present embodiment is similar to the commonly used process of manufacturing a polymer sensor. However, the electrode coating process according to the present embodiment differs from that of the existing process of manufacturing a polymer sensor.
The measurement of the degree of electrodeposition of paint applied to the body and chassis of a vehicle using the sensor according to the present embodiment is illustrated in
As shown in
Meanwhile, as shown in
As shown in
The above-described monitoring device can monitor the amount of charge depending on the degree of electrodeposition of paint applied to the outer and inner body or chassis of the vehicle, which is measured using the sensor, in real time.
In the interpretation of the technical scope of the present invention, the present invention must not be interpreted as being limited only to the above-described embodiment, and the technical scope of the present invention must be defined by the logical interpretation of details described in the accompanying claims.
In a sensor for measuring flow electric potential according to the present invention, the degree of electrodeposition of paint applied to the body or chassis of a vehicle can be efficiently evaluated using a sensor for measuring flow electric potential. Furthermore, information about a painting history can be monitored using the sensor and apparatus for monitoring the amount of charge.
Number | Date | Country | Kind |
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10-2005-0103766 | Nov 2005 | KR | national |