JPS6149145B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is a device that transmits a single piece of information between a mobile body and the ground, or between mobile bodies without contact, from either side. The present invention relates to an information transmission device that can transmit information only at certain times.

Generally, for example, a vehicle (bogie 2
(only the direction of the vehicle body 1 is changed and the attitude of the vehicle body 1 remains unchanged), rotation of the turntable is allowed only when the truck is completely on the turntable, or when the truck 2 is not completely on the turntable. Only when. Here, the fact that the cart 2 is completely placed on the turntable does not mean that the center 3 of the cart 2 and the center 5 of the turntable are correctly aligned in FIG. This refers to a state in which movement does not cause any mechanical problems, and it is generally normal to leave some margin around the center. Particularly in automatically driven vehicles, this margin should be greater than the stopping error when automatically stopping on the turntable. If it is detected by some method that the vehicle has stopped within the allowable rotation range on the turntable, this result must be transmitted from the vehicle side to the ground side. This result is used on the ground side as a turntable rotation permission condition. Furthermore, when the rotation of the turntable is completed, it is necessary to transmit the fact that the rotation has been completed from the ground to the vehicle side. This result is used by the vehicle as a condition for permission to proceed.

Such information transmission is possible within a certain tolerance range depending on the positional relationship between the vehicle and the turntable (Fig. 3 c5).
0), and is preferably not transmitted in other states.

To achieve this objective, many methods and devices have been proposed. For example, methods using induction coil coupling, optical methods, methods using ultrasound,
There are methods of using magnetism, but all of them are more complex than the method proposed here, many cannot withstand harsh environments of high temperature and high humidity with a lot of dust, and they are less reliable and economical. be.

Hereinafter, one embodiment of the present invention will be described in detail with reference to the accompanying drawings.

In FIG. 4, 1 is a transmitter, 2 is a receiver,
Single information is transmitted from side A, where a transmitter 1 is fixed, to side B, where a receiver 2 is fixed. The figure shows a state in which the centers 3 and 4 of the transmitter and receiver are aligned. 5 in the figure indicates that information can be transmitted if the relative positional relationship between transmitter 1 and receiver 2 is within this range. It represents a range.

FIG. 5 shows the structure of the transmitter 1, which is composed of electromagnets. In the figure, 11 is an iron core, 12 is an electromagnetic coil, and three types of structures are shown as shown in figures a to c.

FIG. 6 shows the structure of the receiver 2, which is composed of a plurality of reed switches 21. 2 in the diagram
1 is a reed switch, and all the reed switch contacts are connected in parallel. reed switch 2
1 are arranged in a plane, but their orientations are generally irregular. multiple reed switches 21
If any one or more of the above operates, the terminal 22 as a receiver is short-circuited. A short circuit indicates a received signal, and the reed switch 21 is fixed to the receiver frame 20.

The operation of the information transmission device according to the present invention configured as described above will be explained below.

When the electromagnet that is the transmitter 1 is excited, the distribution and spread of magnetic flux, the strength of the magnetic field, etc. are uniquely determined by the shape and structure of the electromagnet, the exciting current, and the surrounding magnetic environment. On the other hand, when a reed switch is placed in such a magnetic field, the range in which it operates is uniquely determined by the structure, function, posture, etc. of the reed switch. In the present invention, the attitude of the reed switch relative to the receiver frame 20 is configured such that it does not change even if its position relative to the electromagnet changes.

In Fig. 7, 15 indicates the operating range of one reed switch when it is moved on a plane a certain distance G away from the electromagnet (transmitter 1) without changing its attitude with respect to the electromagnet. This is what is shown. This range varies depending on G, the strength of excitation of the electromagnet, and the attitude of the reed switch.

FIG. 8a shows a reed switch 21 in the receiver frame 20.
For convenience of explanation, the attitude of the reed switch with respect to the magnet and the position G of the plane on which the reed switch moves with respect to the electromagnet are assumed to be the same as in FIG. Therefore, the operating range when one reed switch is moved relative to the electromagnet is the same as that shown in FIG. 715. Now, when two reed switches are fixed to the receiver frame 20 as shown in FIG. 8a (assuming that the two reed switches have the same attitude with respect to the electromagnet),
When moving on the same plane relative to the electromagnet,
The operating range of either reed switch is shown in Figure 1.
The range is shown in 6a. In other words, as mentioned above, the contacts of multiple reed switches are connected in parallel, and that terminal is the receiver terminal, and short-circuiting means reception.
The range indicated by 6a is the receivable range on that plane.

FIG. 8b shows an example in which four reed switches are fixed to the receiver frame 20b, and the receivable range of the receiver relative to the electromagnet is naturally expanded compared to the case of FIG. 8a, as shown at 16b.

As described above, the receiving range can be set to a required size by appropriately selecting the number of reed switches without changing the excitation strength of the electromagnet. Also, although the explanation has been omitted, since the operating range of one reed switch changes depending on the attitude of the reed switch with respect to the electromagnet, it can be easily inferred that the degree of freedom in setting the reception range is further improved by combining the number and attitude of the reed switch. can. Being able to set the reception range without changing the excitation of the electromagnets has the effect of reducing mutual interference of magnetic fluxes from the electromagnets when a plurality of transmission devices like the present invention are installed closely together. That is,
Although the receivable range can be expanded by changing the strength of excitation, the advantage of this method is that it can be installed closer together.

As described above, in the information transmission device according to the present invention,
In those consisting of an electromagnet and a reed switch,
A receiver consists of a plurality of reed switches arranged on a plane, all reed switches connected in parallel, and reception when any one of the reed switches operates, and the number of reed switches, By appropriately selecting the placement and attitude relative to the electromagnet, it is possible to arbitrarily set the receivable range of the receiver to the electromagnet.The receivable range can be set without changing the excitation of the electromagnet, so this information transmission is possible. When a plurality of devices are installed, it has the excellent advantage that mutual interference due to changes in magnetic flux distribution does not occur.

[Brief explanation of the drawing]

Figures 1 and 2 are simplified diagrams showing the state of a vehicle being changed direction by a turntable, respectively.
Figures a and b are simplified diagrams showing the states of the vehicle being changed direction by the turntable, and Figure c is a diagram showing the specific tolerance range between the vehicle and the turntable.
FIG. 4 is a simplified configuration diagram showing an embodiment of the present invention, FIG. 5 is a configuration diagram of a transmitter of the same embodiment, FIG. 6 is a configuration diagram of a receiver of the same embodiment, and FIG. 7 is a diagram of a reed switch. FIG. 8 is a simplified diagram showing the operating range of another reed switch. DESCRIPTION OF SYMBOLS 1... Transmitter, 2... Receiver, 3, 4... Transmission, center of receiver, 5... Information transmission possible range, 21... Reed switch, 20... Receiver frame, 16a, 16b... Operating range of reed switch.

Claims (1)

[Claims] 1. In an information transmission device consisting of an electromagnet and a reed switch, a plurality of reed switches are arranged on a plane, all reed switches are connected in parallel, and reception is determined when any reed switch operates. Information transmission characterized in that a receiver configured as above is used as a receiver, and the receivable range of the receiver relative to the electromagnet can be arbitrarily set by appropriately selecting the number, arrangement, and posture of the reed switches relative to the electromagnet. Device.