JPH11303033A - Chain gate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a chain gate having no erroneous operation by disturbed light. SOLUTION: A signal transmitting circuit using a light-emitting element and a signal receiving circuit using a light receiving element are used for both of a pole at the main machine side and a pole at the auxiliary machine side in addition to a microcomputer, by a chain descending signal transmitted from a remote control signal transmitter, a signal transmitting circuit 21 of the pole at main machine side transmits signal by the light-emitting element to the pole at the auxiliary machine side, when the signal is received by the pole at the auxiliary machine side, the microcomputer of the pole at the auxiliary machine side returns the signal by the light- emitting element to the pole at the main machine side, when the signal returned from the pole at the auxiliary machine side is received by the main machine side, the microcomputer of the pole at the main machine side transmits chain descending signal to a chain lifting equipment of the pole at the main machine side and returns the signal to the pole at the auxiliary machine side, and when the returned signal is received by the pole at the auxiliary machine side, the microcomputer of the pole at the auxiliary machine side transmits a chain descending signal to the chain lifting equipment of the pole at the auxiliary machine side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chain gate which is installed at the entrance of a parking lot and which is operated by a remote controller to raise and lower a chain. More specifically, the present invention prevents malfunction due to disturbance light.

[0002]

2. Description of the Related Art Two poles are installed at the entrance of a parking lot,
There has been a so-called chain gate in which a chain is erected and the chain is moved up and down by a signal from a remote control transmitter to control the traffic of an automobile.

[0003] In order to prevent unexpected accidents that occur during lifting and lowering of the chain, a photoelectric switch is provided in the chain gate. If light is interrupted during the raising and lowering operation, it is immediately determined that there is an obstacle. Had to stop.

[0004] However, since light is emitted from one pole and it is determined whether light reaches the other pole, the pole may malfunction due to external disturbance light.

[0005]

Therefore, in the present invention,
An object of the present invention is to provide a chain gate that solves the above problems and eliminates a malfunction caused by disturbance light.

[0006]

Therefore, in the chain gate of the present invention, the chain 3 erected between the main pole 1 and the sub pole 2 is moved up and down by remote control from a remote control transmitter to control the traffic of the automobile. A signal transmission circuit 21 using a light emitting element for both poles 1 and 2, a signal receiving circuit 22 using a light receiving element, and a microcomputer 25, and a chain drop signal generated from a remote control transmitter. As a result, the signal transmission circuit 21 of the main unit side pole 1 emits a signal to the sub unit side pole 2 by the light emitting element, waits for the signal from the sub unit side pole 2, and transmits the signal from the main unit side pole 2 to the sub unit side pole 2. When the signal receiving circuit 22 receives the light by the light receiving element, the microcomputer 25 of the sub unit pole 2 returns the signal to the main unit side pole 1 by the light emitting element of the signal transmission circuit 21. When the signal from the main pole 1 is received by the light receiving element of the signal receiving circuit 22 of the main pole 1, the microcomputer 25 of the main pole 1 receives the signal returned from the sub pole 2. A chain descent signal is issued to the chain elevating device of the pole 1 and
A signal is returned to the auxiliary unit side pole 2 by the light emitting element of the signal transmission circuit 21, and the returned signal is received by the signal receiving circuit 22 of the auxiliary unit side pole 2 by the light receiving element. Sends a chain descent signal to the chain lifting / lowering device of the auxiliary machine side pole 2.

With the above configuration, the main unit-side pole 1 and the sub-unit-side pole 2 transmit and receive a signal and then descend the chain 3, so that the operation is not performed even if disturbance light enters.

[0008] As in the second aspect of the present invention, the first aspect
In addition to the configuration described above, the light emitting element of the signal transmission circuit 21 of the main pole 1 is turned on in a state of waiting for the input of a chain down signal from the remote control transmitter, and is turned off when a chain down signal is input. It is preferable to wait for a signal from the sub machine side pole 2.

With the above configuration, even if light enters the light receiving element of the sub-machine-side pole 2 due to disturbance light, the sub-machine-side pole 2 does not operate because it waits for the light of the main machine-side pole 1 to disappear. . Also, even if the light of the light emitting element is blocked by an obstacle, the light returned from the sub engine side pole 2 is
It does not work because it does not enter the light receiving element.

[0010] As in the third aspect of the present invention, the first aspect
Or, in addition to the configuration described in 2, the main unit-side pole 1 and the sub-unit-side pole 2 transmit and receive signals to and from each other even during the elevating operation of the chain 3, and the signal from the partner-side pole is transmitted within a standby time after signal transmission. When the signal is not received, it is preferable that it is determined that there is an obstacle between the main pole 1 and the sub pole 2 to stop the elevating operation of the chain 3.

With the above configuration, signals are transmitted and received by the main unit side pole 1 and the sub unit side pole 2 even during the elevating operation, so that even if disturbance light enters during the elevating operation, the signal from the opponent side pole is not affected. It does not work by mistake.

[0012]

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

FIG. 1 is a front view of a chain gate using the device of the present invention, and two poles 1 and 2 are installed at both ends of a parking lot entrance and exit, and are installed between the poles 1 and 2. Consists of a chain 3 and a remote control transmitter (not shown)
The chain 3 is moved up and down by remote control operation from the vehicle to control the traffic of the vehicle. Further, the left pole 1 in the figure is a main pole provided with a remote control receiving circuit 23 for receiving a signal from a remote control transmitter, and the right pole 2 in the figure is a sub pole.

FIG. 2 is an explanatory diagram showing the internal structure of the main engine-side pole 1. The mechanical structure of the main engine-side pole 1 will be described below with reference to FIG. Note that the mechanical configuration of the sub-machine-side pole 2 on the right side in the figure is symmetrically arranged with the main engine-side pole 1 and is substantially the same, so that the description of the structure of the sub-machine-side pole 2 is omitted.

The main unit-side pole 1 and the sub unit-side pole 2 are provided with an LED (not shown) as a light emitting element and a photodiode (not shown) as a light receiving element for mutually transmitting and receiving signals.
Are provided on the opposite surface.

Further, a chain elevating device is provided inside the main engine side pole 1 and the sub engine side pole 2. The chain elevating device includes a cylindrical rod-shaped guide shaft 4 erected on a base plate 36, and a guide shaft. 4, two spring blocks 5, 6 which slide up and down, a spring 7 which is connected to the upper part of the upper slide block 5 and urges it upward, and a rope 8 which connects the upper slide block 5 to the rope 8.
, And a motor 10 for driving the winder 9. The mainspring spring 7, the winder 9, and the motor 10 are attached to an H-shaped steel column 11 erected on a base plate 36. ing.

The lower slide block 6 is suspended from the upper slide block 5 by a chain 12, and moves up and down according to the upper slide block 5.

Further, on the upper slide block 5,
Claw 14 urged to rotate clockwise by spring 13
Is provided, and the tip of the claw 14 is engaged with a hole 15 formed in the support post 11 when it is raised.

The tip of the rope 8 of the winding machine 9 is connected to a shaft provided between the rotation shaft 14a of the claw 14 and the tip of the claw 14.
When the rope 8 is pulled, the pawl 14 rotates counterclockwise as shown in FIG. 3 to disengage the hole 15 formed in the support 11, and the rope 8 is loosened. As shown in FIG. 4, it is rotated clockwise to return to the original position,
The hole 15 is formed to engage with the hole 15.

In order to prevent the upper slide block 5 from rising or lowering beyond a predetermined range,
Although not shown, limit switches are provided before the upper stop position and before the lower stop position.

When the rope 8 of the chain gate constructed as described above is pulled by the winder 9 and the slide block 5 is lowered to lower the chain 3, the vehicle can pass as shown in FIG. .

Next, a control circuit of the main pole 1 will be described with reference to FIG. The control circuit of the sub machine-side pole 2 is different from the control circuit of the main machine-side pole 1 only in that there is no remote control receiving circuit, and the other parts are the same. Omitted.

Reference numeral 16 denotes a motor control circuit for controlling ON / OFF, rotation direction, and rotation speed of the motor 10.

Reference numeral 17 denotes an abnormal output circuit for turning on a pilot lamp to notify an abnormality when the motor 10 is overloaded or there is an obstacle between the main pole 1 and the sub pole 2. is there.

Reference numeral 18 denotes an ascending position detecting circuit for detecting that the chain 3 erected between the main unit side pole 1 and the sub unit side pole 2 has reached the ascending position. The height of the slide block 5 rises to the vicinity of the height of the slide block 5.

Reference numeral 19 denotes a descending position detecting circuit for detecting that the chain 3 erected between the main machine side pole 1 and the sub machine side pole 2 has reached the descending position. It is configured to detect that the slide block 5 has been lowered to near the side stop position.

Reference numeral 20 denotes a transmission / reception control circuit for transmitting and receiving signals between the main unit-side pole 1 and the sub unit-side pole 2. The transmission / reception control circuit 20 includes a signal transmission circuit 21 using a light emitting element and a signal receiving circuit 22 using a light receiving element. In addition, transmission and reception of signals are controlled by a command from the microcomputer 25.

Specifically, an LED (light emitting diode) is used as a light emitting element, and a photodiode is specifically used as a light receiving element.

Reference numeral 23 denotes a remote control receiving circuit, which receives an up signal or a down signal transmitted from a remote control transmitter (not shown). This circuit is provided only in the main pole 1 and not in the sub pole 2.

An input / output control circuit 24 is connected to a microcomputer 25 via the input / output control circuit 24.

Reference numeral 26 denotes a storage device storing a control program. Next, the control program will be described.

As shown in FIG. 7, the main routine of the main pole 1 and the sub pole 2 is a remote control routine 27.
And a self-diagnosis routine 28 for diagnosing whether there is any abnormality in the circuit of the apparatus, and an original position return routine for returning to the original position when the motor 10 stops when an abnormality occurs while the chain 3 is being raised or lowered. They consist of 29 and work in parallel.

Since the self-diagnosis routine 28 and the home position return routine 29 have little relation to the contents of the present invention, a detailed description thereof will be omitted, and the remote control routine 27 will be described in detail.

FIG. 8 shows a remote control routine 27 for the main unit pole 1 and FIG. 9 shows a remote control routine 27a for the sub unit pole 2. FIG. 10 is an explanatory diagram showing the relationship between transmission and reception of signals from the main unit side pole 1 and the sub unit side pole 2 in the remote control routines 27 and 27a.

The LED which is the light emitting element of the main pole 1 is lit in the initial state. Then, upon receiving a chain descending signal from the remote controller, the microcomputer 25
Turns off the light emitting element. (Step 1) Then, while waiting for a signal to be returned from the sub machine side pole 2,
When the time-up routine 28 operates and no signal is returned from the sub machine-side pole 2 within a predetermined time, the abnormal output circuit 17 shown in FIG. 6 operates.

When the light emitting element of the main pole 1 is turned off,
The light receiving element of the sub machine side pole 2 detects that the light emitting element of the main machine side pole 1 is turned off (step 2).
The signal transmission circuit 21 instructs the microcomputer 25 to transmit a signal, and the signal transmission circuit 21 returns a signal to the main pole 1 by the light emitting element. (Step 3) Then, at the same time as waiting for a signal to be returned from the main pole 1, the time-up routine 29 operates, and if no signal is returned within a predetermined time, the sub-pole 2 is reset. Error output circuit 17
Is working.

When the light-receiving element of the main pole 1 detects the signal returned from the sub-pole 2 (step 4), the microcomputer 25 of the main pole 1 sends a signal to the signal transmission circuit 21.
At the same time, the signal transmission circuit 21 returns a signal to the sub machine-side pole 2 by the light emitting element (step 5), and at the same time, starts the lowering routine 30 of the chain 3.

When the signal returned from the main unit pole 1 is detected by the light receiving element of the sub unit pole 2 (step 6), the lowering routine 31 of the chain 3 is started.

Next, the lowering routine will be described. The lowering routines 30, 31 for the main engine side pole 1 and the auxiliary engine side pole 2 will be described.
Have the same configuration, only the lowering routine 30 of the main unit pole 1 will be described, and the description of the lowering routine 31 of the sub unit pole 2 will be omitted.

The lowering routine 30 is, as shown in FIG.
A load detection routine 32, a motor speed control routine 33,
It comprises an obstacle detection routine 34 and an emergency stop routine 35, a load detection routine 32, and a motor speed control routine 33.
And the obstacle detection routine 34 work in parallel at the same time.

The load detection routine 32 measures the time until the chain 3 is completely lowered by a timer, and determines that an overload has occurred unless the lowering operation is completed within a predetermined time.
This is a routine for stopping the motor 10.

The timer of this routine starts simultaneously with the start of the lowering operation of the chain 3 and measures the time until the condition judgment function FL = 1 (condition fulfillment) generated in the motor speed control routine 33 is established (step 7). If the function FL = 1 is set within a predetermined time, the process returns to the main routine of step 9; if the function FL = 1 is not set and the time is over, the process proceeds to the emergency stop routine 35 (step 8).

When the operation proceeds to the emergency stop routine 35, the motor 10 is stopped (step 10) and the pilot lamp blinks (step 11) to notify the driver of the emergency stop. When the motor 10 is stopped by the emergency stop routine 35, the motor 10 is returned by the home position return routine 29. (Step 12)

Next, the motor speed control routine 33 will be described.

The motor speed control routine 33 controls the chain descending speed and stops the upper slide block 5 to which the chain 3 is attached at a predetermined position.

When the lowering routine 30 is started, the motor 10
Rotates to lower the chain 3 at high speed V = S1. (Step 13)

When approaching the lower stop position and turning on the lower reed switch LS2 (step 14), the lowering speed is changed to a very low speed V = S2 (step 15), and a predetermined time elapses (TIME $ = 1) Continue descending (step 16) until the motor 10 is stopped (step 17).

Then, a function FL = 1 indicating that the chain 3 has normally descended and the motor 10 has stopped is set (step 1).
18), and return to the main routine (step 19).

The obstacle detection routine 34 is a routine in which the emergency stop routine 35 stops the motor 10 when an obstacle is detected.

More specifically, even during the lowering operation, the main unit-side pole 1 and the sub-unit-side pole 2 continue to communicate with each other in the same manner as the remote control routines 27 and 27a, so that they also function as photoelectric switches. Emergency stop routine when mutual communication becomes impossible due to obstacles or other obstacles.
The motor 10 is stopped by 35.

The presence or absence of an obstacle is determined by checking whether or not mutual communication is possible (step 20). If there is no obstacle, the process proceeds to step 21 to check whether or not the function FL = 1 stands. If the function FL = 1 does not stand, the process returns to step 20, and if it stands, the process proceeds to step 22.

When the mutual communication becomes impossible due to the obstacle, the process proceeds to an emergency stop routine 35 in step 20, and the motor 10 is stopped.

When the chain 3 descends and stops and a predetermined time (TIME $ = 2) has elapsed, the routine proceeds to an ascending routine 41.

As in the descending routine 30, the ascending routine 41 includes a load detecting routine, a motor speed controlling routine,
The load detection routine, the motor speed control routine, and the obstacle detection routine are performed in parallel at the same time, and are substantially the same as the descent routine 30. Is omitted.

The above is the description of the configuration of the chain gate of the present invention. Next, the movement of the chain gate after the command to lower the chain 3 is issued by the remote control transmitter will be briefly described.

First, when a command to lower the chain 3 is issued by the remote control transmitter, the main pole 1 receives a signal from the remote control receiving circuit 23, the microcomputer 25 operates, and the main routine starts.

Next, a remote control routine for the main engine side pole 1
When the light source 27 emits a signal (turns off the light emitting element) to the auxiliary unit pole 2, the remote control routine 27 a of the auxiliary unit pole 2 starts operating.

As described above, signals are transmitted and received between the main unit side pole 1 and the sub unit side pole 2 to inform the sub unit side pole 2 that a command to lower the chain 3 has been issued, and to disturb light. To confirm that it is not the input signal.

Then, the lowering routine 30 starts, and the motor
When the rotation of 10 starts, the rope 8 is pulled, the claw 14 of the upper slide block 5 rotates counterclockwise, and the engagement with the hole 15 is released.

Then, the lowering of the slide block 5 starts. While the slide block 5 is descending, signals are transmitted and received between the main pole 1 and the sub pole 2 and stop when an obstacle obstructs transmission and reception of the signal.

If signals are normally transmitted and received between the main pole 1 and the sub pole 2, the slide block 5 descends and stops.

The slide block 5 is lifted by a raising routine after a predetermined time elapses.

While the slide block 5 is moving up, signals are transmitted and received between the main pole 1 and the sub pole 2 and stop when an obstacle interferes with the transmission and reception of signals.

When the motor 10 rotates in the reverse direction and the winding machine 9 starts to pull out the rope 8, the slide block 5 is urged upward by the mainspring 7, so that the slide block 5 is moved to a predetermined position at a predetermined speed (high speed V = S1). When it rises, a signal is issued by the limit switch in the same manner as when it descends, and it stops after rising for a predetermined time (TIME $ = 1) at a very low speed V = S2.

Then, the claws 14 of the slide block 5 are
13 rotates clockwise and engages with the hole 15 so that the chain 3 does not drop even if it is forcibly lowered.

The above is the description of the embodiment. The signals transmitted and received between the poles 1 and 2 can be implemented as modulated signals.

At this time, the signal is modulated by the signal transmitting circuit 21 and demodulated by the signal receiving circuit 22.

If the transmitted / received signal is modulated as described above, the signal itself can be distinguished from disturbance light, and a malfunction can be prevented.

[0069]

According to the present invention, the chain is lowered after transmitting and receiving signals between the main pole 1 and the sub pole 2 after the signal is sent and received between the main pole 1 and the sub pole 2 as described above. No malfunction occurs.

As in the second aspect of the present invention, the first aspect
In addition to the configuration described above, the light emitting element of the signal transmission circuit 21 of the main pole 1 is turned on in a state of waiting for the input of a chain down signal from the remote control transmitter, and is turned off when a chain down signal is input. By waiting for a signal from the sub unit-side pole 2, malfunction due to disturbance light can be reliably prevented.

As in the third aspect of the present invention, the first aspect
Or, in addition to the configuration described in 2, the main unit-side pole 1 and the sub-unit-side pole 2 transmit and receive signals to and from each other even during the elevating operation of the chain 3, and the signal from the partner-side pole is transmitted within a standby time after signal transmission. If no signal is received, it is determined that there is an obstacle between the main pole 1 and the sub pole 2 and the elevating operation of the chain 3 is stopped, so that the main pole 1 and the sub pole 2 can be moved during the elevating operation. Thus, signals are transmitted and received, so that malfunction due to disturbance light during the elevating operation can be prevented.

[Brief description of the drawings]

FIG. 1 is a front view of a chain gate using the device of the present invention.

FIG. 2 is an explanatory diagram showing an internal structure of a main engine side pole.

FIG. 3 is an explanatory diagram showing a state in which the rope is pulled and the engagement between the claw of the upper slide block and the hole of the column is released.

FIG. 4 is an explanatory view showing a state in which the rope is loosened and the claw of the upper slide block is engaged with the hole of the column.

FIG. 5 is an explanatory diagram showing a state of a main engine side pole when the chain is lowered.

FIG. 6 is a circuit diagram showing a control circuit of a main engine side pole.

FIG. 7 is a flowchart showing a main routine of a control circuit of a main engine side pole.

FIG. 8 is a flowchart showing a remote control routine of a main engine side pole.

FIG. 9 is a flowchart showing a remote control routine for a sub-machine side pole.

FIG. 10 is an explanatory diagram showing a relationship between transmission and reception of signals of a main unit side pole and a sub unit side pole in a remote control routine.

FIG. 11 is a flowchart illustrating a lowering routine of a main engine side pole.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main engine pole 2 Sub engine pole 3 Chain 20 Transmission / reception control circuit 21 Signal transmission circuit 22 Signal reception circuit 25 Microcomputer

Continuation of the front page (72) Inventor Taichi Tsujii 2-7-17 Hata, Ikeda-shi, Osaka Road building 102 Nissin Design Engineering Co., Ltd.

Claims (3)

[Claims] 1. A chain gate for controlling the traffic of an automobile by raising and lowering a chain (3) installed between a main engine side pole (1) and a sub engine side pole (2) by a remote control operation from a remote control transmitter. A signal transmission circuit (21) using a light emitting element for both poles (1, 2), a signal receiving circuit (22) using a light receiving element, and a microcomputer (25)
The signal transmission circuit (21) of the main pole (1) emits a signal to the sub-machine pole (2) by a light emitting element according to the chain descent signal generated from the remote control transmitter, and the sub-machine pole (2) transmits the signal. When the signal from the main unit pole (1) is received by the signal receiving circuit (22) of the sub unit side pole (2) by the light receiving element, the microcomputer (25) of the sub unit side pole (2) Returns a signal to the main pole (1) by the light emitting element of the signal transmission circuit (21), waits for a signal from the main pole (1), and transmits the signal returned from the sub-pole (2) to the main pole. Paul (1)
When the light receiving element of the signal receiving circuit (22) receives the signal, the microcomputer (25) of the main pole (1) issues a chain lowering signal to the chain elevating device of the main pole (1), and the signal transmitting circuit (21). ), A signal is returned to the sub-machine-side pole (2), and the returned signal is received by the light receiving element by the signal receiving circuit (22) of the sub-machine-side pole (2). A chain gate characterized in that the microcomputer (25) generates a chain descending signal to the chain elevating device of the auxiliary machine side pole (2). 2. The signal transmission circuit (2) of the main engine side pole (1).
The light emitting element of 1) is turned on in a state of waiting for the input of the chain descent signal from the remote control transmitter, and is turned off when the signal of the chain descent is input, and waits for the signal from the sub unit side pole (2). The chain gate according to claim 1, wherein: 3. The main unit-side pole (1) and the sub unit-side pole (2) transmit and receive signals to and from each other during the elevating operation of the chain (3). Is not received, it is determined that there is an obstacle between the main pole (1) and the sub pole (2), and the chain (3) is determined.
3. The chain gate according to claim 1, wherein the lifting operation is stopped.