JPH0540905U - Control signal transmission device in self-propelled vehicle device - Google Patents

Abstract

(57) [Abstract] [Purpose] A large number of control signals can be transmitted and received between the self-propelled vehicle of the self-propelled vehicle device and the control device with a small number of signal lines, and circuits related to the transmission and reception of the control signals. Provided is a control signal transmission device that can be configured simply and inexpensively. [Arrangement] An AC signal source 6 and a transmission circuit 7 of a control device 2,
The receiving circuit 11 of the self-propelled vehicle 1 is connected via a pair of signal lines 3 and 4 along the self-propelled route of the self-propelled vehicle 1. The transmitter circuit 7 is composed of diodes 13 and 14 and switches 14 and 16. The receiving circuit 11 is composed of diodes 25 and 27 and relays 26 and 28.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention, in a self-propelled vehicle device such as a self-propelled overhead conveyor or a self-propelled carriage device, transmits and receives control signals between the self-propelled vehicle and a control device that controls traveling of the self-propelled vehicle. Regarding the device.

[0002]

[Prior Art]

 In a self-propelled vehicle device such as a self-propelled overhead conveyor or a self-propelled carriage device, a self-propelled vehicle is usually required for its operation via a power supply line arranged along the traveling route of the self-propelled vehicle. Power is supplied, and control signals are sent and received between the vehicle and the control device that controls the operation of the vehicle through a signal line that is provided along with the power supply line along the traveling route of the vehicle. In this case, the power supply circuit section and the control circuit section of the self-propelled vehicle are connected to the power supply line and the signal line together with the self-propelled vehicle through the contactor that slides while contacting the power supply line and the signal line. Connected to the wire.

In many cases, a self-propelled vehicle of this type of self-propelled vehicle device can perform a plurality of types of operations, such as changing the traveling speed to various speeds. In the vehicle device, multiple types of control signals, such as multiple command signals from the control device to the self-propelled vehicle and multiple response signals from the self-propelled vehicle to the control device, are transmitted between the self-propelled vehicle and the control device. It sends and receives via a signal line.

In such a self-propelled vehicle device, conventionally, the following two techniques are generally used as a technique for exchanging a plurality of types of control signals between the self-propelled vehicle and the control device. ..

That is, one method is basically that a single control signal is transmitted / received by a pair of signal lines, a plurality of these signal line pairs are provided, and transmission / reception of a plurality of types of control signals is controlled. This is a method of performing each signal via a separate signal line. In this case, in this case, in practice, one signal line of each pair of signal lines is usually combined as a common signal line for each control signal.

Therefore, for example, if there are four types of control signals to be transmitted and received, five signal lines including the common signal line are required.

In this method, two types of control signals are transmitted and received by the signal lines of each pair in a state where the control signal is actually given to each pair of signal lines and a state where the control signal is not given. It is also possible to do so. In this case, for example, if there are four types of control signals to be transmitted and received, three signal lines including the common signal line are required.

In another method, the voltage value of the control signal is different for each control signal to be exchanged between the self-propelled vehicle and the control device, and the same pair of signal lines is used. This is a method of sending and receiving each control signal.

However, these methods have the following disadvantages.

That is, in the former method, although the circuit configuration of the control circuit, such as the control signal transmitting circuit and the control signal receiving circuit in the self-propelled vehicle and the control device, can be made relatively simple, the self-propelled vehicle and the control circuit can be controlled. When the number of control signals to be transmitted to and received from the device increases, a large number of signal lines are required, which increases the size of the self-propelled vehicle device and is disadvantageous in terms of cost. The handling of the wire becomes complicated.

Further, in the latter method, although the number of signal lines may be small, the circuit configuration of the control signal transmission circuit and the reception circuit of the self-propelled vehicle and the control device is such as the voltage value of the control signal. A complicated electronic circuit is required to change or discriminate, and the cost becomes expensive.

[0012]

The present invention solves such inconvenience, and it is possible to send and receive a large number of control signals between the self-propelled vehicle of the self-propelled vehicle device and the control device with a small number of signal lines. It is an object of the present invention to provide a control signal transmission device capable of simply and inexpensively configuring a circuit or the like related to the transmission / reception of the control signal.

[0013]

[Means for Solving the Problems]

 In order to achieve such an object, the present invention provides a self-propelled vehicle device including a self-propelled vehicle and a control device for controlling the self-propelled vehicle, and sends and receives a control signal between the self-propelled vehicle and the control device. A pair of control-side connecting lines derived from the signal lines toward the control device, the pair of signal lines being arranged along the self-propelled route of the self-propelled vehicle. A pair of self-propelled side connection lines, which are respectively guided from the signal lines toward the self-propelled vehicle via contacts, and are movably provided together with the self-propelled vehicle, a first diode and a first diode. A series circuit composed of a switch and a series circuit composed of a second diode and a second switch are connected in parallel to one of the pair of control side connection lines with the diodes being in opposite directions. A control side transmission circuit provided in the control device; And an AC signal source connected between the other of the pair of control-side connection lines and the control-side transmission circuit, a series circuit including a third diode and a first relay, and a fourth circuit. And a series circuit composed of a second relay and a second relay connected in parallel between the pair of self-propelled side connecting lines with both diodes in opposite directions. And a receiving circuit on the running side.

Further, a pair of second signal lines arranged along the self-propelled route of the self-propelled vehicle, and a pair of second control sides derived from the signal lines toward the control device, respectively. A connection line and a pair of second self-propelled side connection lines, which are derived from the second signal line toward the self-propelled vehicle through respective contactors and are movably provided together with the self-propelled vehicle, The pair of second self-propelled side connecting wires with the series circuit composed of the fifth diode and the third switch and the series circuit composed of the sixth diode and the fourth switch in a state where both diodes are in opposite directions. And a self-propelled transmission circuit provided in the self-propelled vehicle, which is connected in parallel to one of the two A second AC signal source connected to the side transmitter circuit and a seventh diode. A series circuit composed of a second relay and a third relay, and a series circuit composed of an eighth diode and a fourth relay between the pair of second control side connection lines with both diodes in opposite directions. A control side reception circuit provided in the control device connected in parallel is provided.

Further, one of the pair of signal lines, one of the control-side signal line and the free-running-side signal line derived from the signal line, and one of the pair of second signal lines, And the second control-side connection line and the second free-running-side signal line derived from the signal line, which are integrated into a common line.

[0016]

[Action]

 According to the present invention, for example, when the first switch of the control-side transmission circuit is turned on, the AC signal of the AC signal source is rectified into DC by the first diode, and then the pair of control signals is controlled. Applied to the free-running side receiving circuit through the side connecting line, the signal line and the free running side connecting line, and at this time, of the third and fourth diodes of the free running side receiving circuit, For example, a direct current flows through the third diode in the forward direction, and the first relay is turned on.

Further, when the second switch of the control side transmission circuit is turned on, after the AC signal of the AC signal source is rectified by the second diode into DC having a polarity different from that in the above case, It is applied to the free-running receiving circuit through the control-side connecting line, the signal line, and the free-running-side connecting line, and at this time, of the third and fourth diodes of the free-running-side receiving circuit, in the above case. Different from the above, for example, a direct current flows through the fourth diode, and the second relay is turned on.

Further, when both the first and second switches are turned on, the AC signal of the AC signal source is directly applied to the free-running side receiving circuit, and therefore the first and second switches are applied. All relays are turned on.

When both the first and second switches are in the OFF state, neither the DC signal nor the AC signal is applied to the free-running side receiving circuit, so that the first and second switches are not applied. All relays are turned off.

Therefore, four types of ON / OFF states can be obtained by combining the first and second switches, and four types of ON / OFF states can be obtained. Therefore, it becomes possible to transmit four kinds of control signals from the control device to the vehicle through the pair of signal lines.

Further, the self-propelled vehicle is provided with the self-propelled side transmission circuit and the second AC signal source having a configuration similar to that of the control-side transmission circuit, and the control device is provided with the self-propelled side. When the control side reception circuit having the same configuration as the reception circuit is provided, four types of control signals are transmitted from the self-propelled vehicle to the control device through the pair of second signal lines as in the above case. It becomes possible to do. Therefore, it is possible to send and receive a total of eight kinds of control signals between the control device and the vehicle by means of four signal lines including the pair of signal lines and the pair of second signal lines. Become.

In this case, further, one of the pair of signal lines, the control-side signal line and the free-running-side signal line derived from the signal line, and the pair of second signal lines. A total of eight types of control can be achieved by configuring one or the other, the second control-side connection line derived from the signal line, and the second free-running-side signal line as a common line. It is possible to reduce the total number of signal lines for exchanging signals to three.

[0023]

【Example】

 An example of the control signal transmission device of the present invention will be described with reference to FIGS. FIG. 1 is a circuit diagram of the control signal transmission device, and FIG. 2 is a diagram for explaining its operation.

In FIG. 1, 1 is a self-propelled vehicle, 2 is a control device for controlling the self-propelled vehicle 1, and the self-propelled vehicle 1 is configured to be capable of self-propelled along a predetermined traveling route. The electric power required for the self-propelled vehicle is supplied through a power supply line (not shown) arranged along the traveling route. The control device 2 is installed at a predetermined location outside the traveling route of the self-propelled vehicle 1.

In the figure, 3 to 5 are signal lines arranged along the traveling route of the self-propelled vehicle 1 for exchanging control signals between the self-propelled vehicle 1 and the control device 2, and 6 to 6. Reference numeral 8 denotes an AC signal source, a control side transmitting circuit and a control side receiving circuit respectively provided in the control device 2, and 9 to 11 respectively denote an AC signal source, a self-propelling side transmitting circuit and a self side traveling circuit provided in the self-propelled vehicle 1. It is a running-side receiving circuit, and control-side connecting lines 3a to 5a are derived from the respective signal lines 3 to 5 toward the control device 2, and further, the running-side connecting line 3b toward the moving vehicle 1. ~ 5b have been derived. In this case, the self-propelled side connecting lines 3b to 5b are electrically contacted with the signal lines 3 to 5 via the brush 12 which is a contactor, and the signal lines 3 to 3 are accompanied by the traveling of the self-propelled vehicle 1. 5 to 5 through the brush 12 and is movable together with the self-propelled vehicle 1.

The control side transmission circuit 7 includes a series circuit composed of a diode 13 and a switch 14 and a series circuit composed of a diode 15 and a switch 16 in a state where the diodes 13 and 15 are in opposite directions to each other. And the AC signal source 6 is connected between the control side transmission circuit 7 and the control side connection line 4a. Here, in the present embodiment, for example, the diode 13 is defined as the forward direction from the AC signal source 6 to the signal line 3, and the diode 15 is defined as the forward direction from the signal line 3 to the AC signal source 6. There is.

Similarly, in the free-running side transmission circuit 10, a diode 17 and a series circuit including a switch 18 and a diode 19 and a series circuit including a switch 20 have diodes 17 and 19 in opposite directions. In this state, they are connected in parallel to the free-running side connecting line 5b, and the AC signal source 9 is connected between the free-running side transmitting circuit 10 and the free-running side connecting line 4b. Here, in this embodiment, for example, the diode 17 is defined as the forward direction from the AC signal source 9 to the signal line 5, and the diode 19 is defined as the forward direction from the signal line 5 to the AC signal source 9. ing.

The control side receiving circuit 8 has a series circuit including the diode 21 and the DC relay 22 and a series circuit including the diode 23 and the DC relay 24 connected in parallel between the control side connecting lines 4 a and 5 a. In this case, in this embodiment, for example, the diode 21 is defined as the forward direction from the signal line 5 to the signal line 4, and the diode 23 is defined as the forward direction from the signal line 4 to the signal line 5. Has been done.

Similarly, the free-running side receiving circuit 11 connects the series circuit including the diode 25 and the DC relay 26 and the series circuit including the diode 27 and the DC relay 28 between the free-running side connecting lines 3b and 4b. In this case, in this embodiment, for example, the diode 25 is in the forward direction from the signal line 3 to the signal line 4, and the diode 27 is in the direction from the signal line 4 to the signal line 3. Is the forward direction.

In the circuit configuration, the signal line 4 is grounded, for example, via the control-side connection line 4a, and the signal line 4 and the control-side connection line 4a and self-running-side connection connected to the signal line 4 are connected. The line 4b is a common line shared by the circuits 7, 8, 10, 11 and the AC signal sources 6, 9.

Next, the operation of the control signal transmission device will be described.

In this control signal transmission device, for example, when only the switch 14 of the control side transmission circuit 7 is turned on while the AC signal source 6 of the control device 2 is activated, the rectification action of the diode 13 causes The AC signal generated from the AC signal source 6 is rectified into a DC signal as shown in, for example, FIG. 2A, and this DC signal is transmitted to the free-running side reception circuit 11 via the signal lines 3 and 4. Is applied.

Then, at this time, a direct current flows through the diode 25 which is in the forward direction with respect to this direct current signal, whereby the DC relay 26 is turned on.

When only the switch 16 of the control-side transmission circuit 7 is turned on, the rectifying action of the diode 15 causes the AC signal of the AC signal source 6 to be different from the case described above, for example, as shown in FIG. 2B. It is rectified into DC signals having different polarities, and this DC signal is applied to the free-running side reception circuit 11 via the signal lines 3 and 4.

Then, at this time, a direct current flows through the diode 27 in the forward direction with respect to this direct current signal, whereby the DC relay 28 is turned on.

When both the switches 14 and 16 of the control side transmission circuit 7 are turned on, the AC signal of the AC signal source 6 as shown in FIG. 2B, for example, is self-propelled through the signal lines 3 and 4. It is applied to the side receiving circuit 11.

At this time, a current flows through both diodes 25 and 27 of the free-running side reception circuit 11, whereby both of the DC relays 26 and 28 are turned on.

When both the switches 14 and 16 of the control side transmission circuit 7 are turned off, as a matter of course, as shown in FIG. Signal is not applied and both DC relays 26 and 28 are turned off.

Therefore, the control side transmission circuit 7 of the control device 2 outputs four types of control signals corresponding to the ON / OF F combinations of the switches 14 and 16 via the signal lines 3 and 4 to the free running side reception circuit. 11 can be transmitted to the self-propelled vehicle 1 at this time, as shown in Table 1 below, corresponding to the ON / OFF combinations of the switches 14 and 16 in the self-propelled vehicle 1. Each control signal can be recognized by turning ON / OFF the DC relays 26 and 28.

[0040]

[Table 1]

In this case, specifically, for example, the self-propelled vehicle 1 receives four types of “stop”, “low speed traveling”, “medium speed traveling”, and “high speed traveling” according to a command signal from the control device 2. When the traveling operation can be performed, as shown in Table 1, each ON / OFF combination of the switches 14 and 16 is associated with each traveling operation of the self-propelled vehicle 1, and the switch is operated in accordance with this correspondence. If 14 and 16 are turned ON / OFF, the above-mentioned four kinds of command signals can be transmitted from the control device 2 to the vehicle 1 via the signal lines 3 and 4.

Further, in this control signal transmission device, the self-propelled vehicle 1 includes the self-propelled side transmission circuit 10 and the AC signal source 9 having the same configuration as the control side transmission circuit 7 between the signal lines 4 and 5. In addition, since the control device 2 includes the control side receiving circuit 8 having the same configuration as the free running side receiving circuit 11 between the signal lines 4 and 5, the control device 2 is provided with It is possible to transmit from the running side transmission circuit 10 to the control side receiving circuit 8 via the signal lines 4 and 5, and at this time, the DC relays 22 and 24 of the control side receiving circuit 8 are Depending on the combination of ON / OFF of the switches 18 and 20, it is turned ON / OFF as shown in Table 2 below.

[0043]

[Table 2]

In this case, specifically, for example, as information to be responded from the self-propelled vehicle 1 to the control device 2, whether or not the self-propelled vehicle 1 is normal and whether the self-propelled vehicle 1 is Assuming that four types of response information indicating whether or not the vehicle is at a predetermined position are required, as shown in Table 2, each combination of ON / OFF of the switches 18 and 20 and each of the self-propelled vehicles 1 By associating with the response information and turning on / off the switches 14 and 16 according to this correspondence, the above-mentioned four types of response signals are transmitted from the vehicle 1 to the control device 2 via the signal lines 4 and 5. can do.

As described above, in this control signal transmission device, four types of control signals can be transmitted from the control device 2 to the self-propelled vehicle 1 via the signal lines 3 and 4, and at the same time, the self-propelled vehicle 1 can It is possible to transmit four kinds of control signals to the control device 2 via the signal lines 4 and 5. Therefore, the total of the three signal lines 3 to 5 are provided between the control device 2 and the self-propelled vehicle 1. Eight types of control signals can be sent and received.

[0046]

[Effect of the device]

 As is apparent from the above description, according to the present invention, a control side transmission circuit and an AC signal source are formed by connecting two series circuits each including a diode and a switch in parallel with the diodes being in opposite directions. Is installed in the control device, and a self-propelled receiver circuit is provided in the self-propelled vehicle, in which two series circuits each consisting of a diode and a relay are connected in parallel with both diodes in opposite directions. These circuits and the alternating signal source are connected to a pair of signal lines for exchanging control signals between the self-propelled vehicle and the control device, and the AC signal source is connected to the control side transmitting circuit and the pair of signal lines. By transmitting four types of control signals to the receiving circuit on the self-propelled side, a large number of control signals can be transmitted from the control device to the self-propelled vehicle with a small number of signal lines, and transmission / reception thereof Involved in The road construction inexpensive diode or a relay or the like can simplify configuration and to isosamples used.

Then, a self-propelled transmission circuit and an AC signal source having the same configuration as the control-side transmission circuit are provided in the self-propelled vehicle, and a control-side receiving circuit having the same configuration as the self-propelling-side receiving circuit is provided in the control device. , These circuits and the AC signal source are connected to a pair of second pair of signal lines, and the control side reception is performed from the AC signal source of the vehicle through the free running side transmission circuit and the pair of second signal lines. By transmitting the four types of control signals to the circuit, a larger number of control signals can be transmitted and received between the control device and the self-propelled vehicle with a small number of signal lines, and as in the case described above. The circuit configuration relating to the transmission / reception of the control signal can be made inexpensive and simple.

In this case, either one of the pair of signal lines for transmitting from the control device to the self-propelled vehicle and the pair of second signal for transmitting from the self-propelled vehicle to the control device are further provided. By combining one of the lines as a common line, it is possible to further reduce the number of signal lines for exchanging a large number of control signals.

[Brief description of drawings]

FIG. 1 is a circuit configuration diagram of an example of a control signal transmission device of the present invention,

FIG. 2 is a diagram for explaining the operation of the control signal transmission device.

[Explanation of symbols]

1 ... Self-propelled vehicle, 2 ... Control device, 3-5 ... Signal line, 3a-5
a: control side connecting line, 3b to 5b ... self-running side connecting line, 6, 9
... AC signal source, 7 ... Control side transmitting circuit, 8 ... Control side receiving circuit, 10 ... Free running side transmitting circuit, 11 ... Free running side receiving circuit, 1
2 ... Contactor (brush), 13, 15, 17, 19, 2
1, 23, 25, 27 ... Diodes, 14, 16, 1
8, 20 ... Switch, 22, 24, 26, 28 ... Relay.

Claims (3)

[Scope of utility model registration request] 1. A self-propelled vehicle device comprising a self-propelled vehicle and a control device for controlling the self-propelled vehicle, wherein the control signal is transmitted and received between the self-propelled vehicle and the control device. At least a pair of signal lines arranged along the self-propelled path of the self-propelled vehicle, a pair of control-side connection lines derived from the signal lines toward the control device, and contacts from the signal lines, respectively. A pair of self-propelled side connecting lines which are led out to the self-propelled vehicle via the and are provided so as to be movable together with the self-propelled vehicle; a series circuit including a first diode and a first switch;
And a series circuit composed of a second switch and a diode and a second switch are connected in parallel to one of the pair of control side connection lines in a state where both diodes are in opposite directions, and the control side transmission circuit is provided in the control device. And an AC signal source provided in the control device and connected between the other of the pair of control side connection lines and the control side transmission circuit, and a series circuit including a third diode and a first relay. A series circuit including a fourth diode and a second relay is connected in parallel between the pair of self-propelled side connecting lines in a state where both diodes are in opposite directions. A control signal transmission device in a self-propelled vehicle device, comprising: a self-propelled side reception circuit. 2. A pair of second signal lines arranged along a self-propelled route of the self-propelled vehicle, and a pair of second control sides respectively derived from the signal lines toward the control device. A connection line and a pair of second self-propelled-side connection lines that are derived from the second signal line toward the self-propelled vehicle via contacts and are movably provided together with the self-propelled vehicle; The pair of second self-propelled side connecting wires in a state in which the series circuit including the fifth diode and the third switch and the series circuit including the sixth diode and the fourth switch are opposite to each other. And a self-propelled side of the pair of second self-propelled-side connection lines provided in the self-propelled vehicle, the self-propelled-side transmission circuit being connected in parallel to one of the two. A second AC signal source connected to the transmitter circuit, a seventh diode and a third resistor. And a series circuit including an eighth diode and a fourth relay are connected in parallel between the pair of second control side connecting lines in a state where both diodes are in opposite directions. The control signal transmission device in the self-propelled vehicle device according to claim 1, further comprising a control side reception circuit provided in the control device. 3. One of the pair of signal lines, one of the control-side signal line and the free-running-side signal line derived from the signal line, and one of the pair of second signal lines, and The self-propelled vehicle device according to claim 2, wherein the second control-side connection line and the second self-propelled signal line derived from the signal line are integrated into a common line. Control signal transmission device in.