JPH01441A - car body magnetization device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a vehicle body magnetization device, and is particularly used to test an on-vehicle orientation display device mounted on a vehicle, and is used to test a vehicle direction display device mounted on a vehicle. The present invention relates to a single magnetization device that simulates the magnetization of a car body using PA.

[Prior art 1] Fig. 3 is a schematic diagram of a conventional car body magnetization device (Jitsuma +1?? No. 58-26615), which the present applicant has already applied for, and is formed to a size that allows a car to pass through. A coil 1 is wound around a non-magnetic frame (not shown). An electric current a2 is connected to the coil 1.

In the vehicle body magnetization device configured as described above, by passing a current from the power source 2 through the coil 1, a DC magnetic field is generated in the coil 1 in the direction in which the vehicle is traveling or in the opposite direction. The relationship between this magnetic field and the vehicle is similar to the relationship between the external magnetic field and the vehicle when the vehicle passes through a railroad crossing. By changing the magnetization state of the vehicle body using this vehicle body magnetization device, it is possible to investigate the influence of an external magnetic field at a railroad crossing on a four-mounted force position display device that utilizes earth's magnetism.

[Problem to be Solved by the Invention 1] The conventional vehicle body magnetization device configured as described above is capable of effectively suppressing the influence of external magnetic fields at railroad crossings on vehicle-mounted direction display VC at railroad crossings on public roads that obstruct traffic. However, unlike the external magnetic field that actually occurs at a railroad crossing, the rectangular non-magnetic frame does not allow accurate investigation of the influence of external magnetic fields at railroad crossings on in-vehicle direction display devices. There was a problem.

The present invention was made to solve the above-mentioned problems, and an object of the present invention is to obtain a vehicle body magnetization device that reproduces the external magnetic field that actually occurs at a railroad crossing.

[Means for Solving the Problems 1] The vehicle body magnetization device according to the present invention has a frame having a roof-like overall shape, and a pair of rail-corresponding parts having a spacing equivalent to the width of the rails, and a bridge. The rail-corresponding part is connected to the overhead wire-corresponding part at a position corresponding to the height of the overhead wire of the train.

[Creation] B 1 In this invention, an actual railroad crossing is created around the frame by passing current through a coil wound around a frame shaped like J&, assuming a pair of actual rails and overhead lines. A magnetic field similar to the generated external magnetic field is generated.

[Example 1 Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 and FIG. f:tS2 are schematic configuration diagrams showing one embodiment of the present invention.A film 11 is wound around a frame 10 having a size that allows a car to pass through. has been done. The coil 11 has a power source 1 that causes current to flow through the coil 11.
2 are connected.

The frame body 10 is formed into a roof shape, and includes a pair of rail-equivalent portions 13 having an interval equivalent to the width of the train rails;
The rail-equivalent portion 13 is connected via a bridge n14 to an overhead line-equivalent portion 15 located at a position equivalent to the height of the overhead wire of the train. Then, the rail equivalent part 13 and the overhead line equivalent part 15
is made of aluminum, which is a non-magnetic material that does not interfere with the magnetic field, and the transition portion 14 is made of steel, which is a magnetic material that prevents the magnetic field generated from the coil 11 from exiting to the outside.

In the vehicle body magnetization device configured in this way, the power source 1
By passing the current from 2 through the coil 11, the filter 1
1 is myself! I! A DC magnetic field is generated in the direction of movement of 1J11 or in the opposite direction. The magnetic field distribution at this time is
Since the shape of the frame is formed assuming an actual pair of rails and overhead wires, the external magnetic field is similar to that at a railroad crossing.

Then, by changing the magnetized state of the insect body by changing the vehicle body magnetization vcra, it is possible to accurately investigate the influence of an external magnetic field at a railroad crossing of the vehicle-mounted orientation display using earth's magnetism.

Note that when the current from the power source is small, a magnetic field similar to that of the above embodiment can be generated by winding the coil around the frame a plurality of times. Further, even if a plurality of sets of coils are installed in the frame and the power supply for each coil is activated, a magnetic field similar to that of the above embodiment can be generated with a small power supply.

[Effects of the Invention 1] As explained above, the vehicle body magnetization device of the present invention has a frame body shaped assuming an actual pair of rails and overhead wires, so it is possible to reproduce the external magnetic field generated at an actual railroad crossing. There is an effect that it can be done.

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram of a frame showing an embodiment of the present invention;
Figure 2 is a schematic diagram of the coil vtJ wound around the frame shown in Figure 1.
& Figure 3 is a schematic configuration diagram showing an example of a conventional vehicle body magnetization device. 10...Frame body, 11...Coil, 12...'@source,
13... Rail equivalent part, 14... Transition part, 15...
Equivalent to overhead wire. In addition, in the figures, the same reference numerals indicate the same or corresponding parts. Figure 1 Figure 2 Figure I￥3

Claims (2)

[Claims] (1) A frame body formed in a size that allows a car to pass through, a coil wound around this frame body, and a power source that causes current to flow through this coil, and by passing current through the coil. , a vehicle body magnetization device that simulates the magnetization of the vehicle body at a railway crossing of a train, wherein the frame body is
A pair of rail equivalent parts formed in a roof shape and having a spacing equivalent to the width between the rails, and an overhead wire connected via a transition part and located at a position equivalent to the height of the overhead wire of the electric train from the rail equivalent part. A vehicle body magnetization device comprising a corresponding part. (2) The vehicle body magnetization device according to claim 1, wherein the rail-equivalent portion and the overhead wire-equivalent portion are made of a non-magnetic material, and the transition portion is made of a magnetic material.