JPH11217982A - Opening / closing body control system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a control system for an opening/closing body capable of safely opening/closing the body, for example, effecting the stop operation preferentially even during failure or run-away of a control circuit mounting an MPU or others. SOLUTION: A treatment means 5 judges the condition of a contact to allow control signals B1-B3 of corresponding output level to be output and the output level of operation signals A1-A3 to be reversed by a reversing means 6, not via the treatment means 5, and input to a blocking means 7. When the output level of the control signals B1-B3 corresponds to that of the operation signals A1-A3, drive signals C1-C3 of output level to drive or block the open/close and stop of an open/closed body with the blocking means 7 is output to a drive means. When the output level of the control signals B1-B3 does not corresponding to that of the operation signals A1-A3 because of output error in the treatment means 5, the drive signals C1, C3 of L level is output by the blocking means 7 and the drive signal C2 is in turn output at a H level.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an opening / closing body for a building,
For example, the present invention relates to a control system for an opening / closing body that controls opening / closing of an opening / closing body such as a shutter and a door.

[0002]

2. Description of the Related Art In general, in a small-sized shutter such as a window shutter, an operation-side signal is input and processed by an MPU, and a drive-side switch is driven to control opening and closing and stopping of a shutter. I have.

FIG. 6 is a circuit diagram showing the above-described conventional opening / closing body control device. The control device 100 includes an operation unit 101 and a control unit 102. Operating means 101 such as a push button switch and a remote controller are provided with contacts 101a, 101b and 101c for opening, closing and stopping. The operation means 101 outputs an operation signal to the control means 102 when each contact button is operated.

The control means 102 includes a power supply 103, an MPU 1
04 and the drive circuit 105. By opening and closing the contacts of the operation means 101, corresponding operation signals (open, close, stop) are input to the MPU. MPU1
Reference numeral 04 determines whether an opening / closing body such as a shutter is open, closed or stopped based on the input of an operation signal, and generates a control signal. This control signal is output to the drive circuit 105. Drive circuit 1
Numeral 05 generally comprises a transistor Tr and a drive relay R. When the control signal is input to the drive circuit 105,
The transistor Tr operates, and the drive relay R operates according to the control signal. Then, a relay contact provided on a power supply line of a switch (not shown) is switched to open, close, or stop the shutter.

As described above, the operating means 101 and the driving circuit 1
The reason why the MPU 104 is provided during the period 05 is as follows. For integrated processing of various signals for opening and closing the switch, simplification of the control circuit, and isolation between the power supply line of the switch and the control circuit provided with the MPU 104. MP
By centrally inputting an operation signal, an obstacle detection signal, and the like to the MPU 104 using the U104, a shutter control circuit can be simplified and reliability can be improved. In addition, when chattering prevention of the switch contact of the operation unit 101 is performed by software or when the opening and closing operation continues for a predetermined time or more,
Processing such as forced stop by timer monitoring is performed. Also, by separating the power supply line on the high voltage side and the control circuit on the low voltage side, the cost of the components of the control circuit can be reduced and the maintenance can be facilitated. Exceeding limit operation When adjusting the position of the shutter curtain opening / closing limit position at the time of shutter installation, etc., sometimes the limit curtain operation that continues to operate the shutter curtain even after being detected by the limit switch is performed. . Such a special operation is performed by a specific operation on the operation unit 101. For example, it is set so that “opening” and “stop” are performed simultaneously, and the MPU 104 detects this simultaneous pressing operation and determines that the operation is over the limit. In order to perform priority processing when the switches are simultaneously pressed, when "open" and "close" of the operation means 101 are erroneously operated at the same time, processing for giving priority to one of them is performed to prevent malfunction of the control circuit and prevent the shutter curtain from operating. Operation is stabilized.

[0006]

However, the MPU 10 mounted inside the conventional control means 102 described above.
No. 4 may not operate normally due to malfunction or runaway due to strong electromagnetic interference from outside or any cause. When the MPU 104 malfunctions, the shutter curtain may open and close in an unexpected direction.

In order to solve the above-mentioned problems, the present invention adapts to a signal input to open and close an opening / closing body such as a shutter even if a control means equipped with an MPU or the like breaks down or runs away. An object of the present invention is to provide a control system of an opening / closing body capable of opening / closing control.

[0008]

According to a first aspect of the present invention, there is provided a control system for an opening / closing body which outputs a signal for opening, closing, and stopping the opening / closing body. Output means, processing means for outputting a control signal for opening and closing the opening / closing body based on a signal output from the signal output means, and a processing means provided in parallel with the processing means for processing the signal output from the signal output means. A detour signal path for outputting to a subsequent stage without passing through a means, a control signal of the processing means and a signal of the detour signal path are input, and the validity of the control signal is compared with a signal of the signal output means. Determining means for controlling the output of a drive signal for opening and closing the open / close body, and drive means for operating a switch for driving the open / close body in response to the input of each of the drive signals. Features

According to a second aspect of the present invention, the signal output means has an open / close / stop switch and outputs an operation signal for opening / closing the open / close body based on the operation of the switch. Part.

[0010] Further, as set forth in claim 3, the blocking means performs an AND operation based on the opening control signal and the opening operation signal, and the closing control signal and the closing operation. A that performs AND operation based on signals
An ND circuit and an OR circuit that performs an OR operation based on the stop control signal and the stop operation signal may be configured to output a drive signal while satisfying the respective logical conditions.

According to a fourth aspect of the present invention, the signal output means detects an operation state of each mechanism when the opening / closing member is opened and closed, and outputs a detection signal for controlling opening / closing of the opening / closing member. Can be configured.

Further, the detour signal path is provided with an inverting means for inverting an output level of the signal output means, and the blocking means comprises an output level of the inverting means and the processing means. The output level of the control signal output by the control signal may be checked to determine the validity of the control signal, and a change in the output level of the drive signal due to only the output level of the control signal may be prevented.

According to another aspect of the present invention, a signal output from the signal output means is provided in the detour signal path at a timing synchronized with a processing time until each of the control signals is output from the processing means. May be provided.

With the above configuration, the contact output 2 of the operation unit 2A
When a to 2c are open, the processing means 5 outputs control signals B1 to B3 at output levels that do not instruct the opening and closing of the opening / closing body, and the inversion means 6 without the processing means 5 outputs the operation signals A1 to A3. The level is inverted and output to the blocking means 7. When the contacts 2a to 2c are closed,
The processing means 5 determines the states of the contacts 2a to 2c, outputs control signals B1 to B3 at output levels for instructing the operation of the opening and closing members, and outputs the control signals B1 to B3 without passing through the processing means 5.
, The output levels of the operation signals A1 to A3 are inverted and input to the blocking means 7. Therefore, the control signal B1
.. B3 and the output levels of the operation signals A1 to A3 coincide with each other, drive signals C1 to C3 of output levels for driving or blocking the opening / closing body by the blocking means 7 are output to the driving means. If the output levels of the control signals B1 to B3 and the operation signals A1 to A3 do not match due to an erroneous output of the processing unit 5, the driving signals C1 and C3 of the output level for preventing the opening and closing of the opening and closing body by the blocking unit 7 are generated. On the other hand, the drive signal C2 is output at an output level for stopping and driving the opening / closing body.

[0015]

FIG. 1 is a circuit diagram showing a first embodiment of a control system for an opening / closing body according to the present invention. The control system 1 includes a signal output unit 2 and a control unit 3, and an example in which a shutter is used as an opening / closing body will be described. The operation unit 2A serving as the signal output unit 2 is a switch box disposed on a wall or the like near the shutter, and is connected to the control unit 3 by wire. Open, stop, and close contacts 2a, 2b, and 2c formed of push button switches are provided inside the operation unit 2A.
By operating the operation switches 2b and 2c, corresponding operation signals are output. One ends of the contacts 2a, 2b, 2c are grounded, and the other ends are connected to input terminals of the control means 3, respectively.

The control means 3 comprises a power source 4, a processing means such as an MPU 5, a bypass signal path 10, an inversion means 6, a blocking means 7, and a driving means 8. The bypass signal path 10 is a signal line connected in parallel with the processing unit 5 between each of the contacts 2a, 2b, 2c of the operation unit 2A and the blocking unit 7. The detour signal path 10 is provided with an inversion means 6. The inverting means 6 includes NOT circuits 6a, 6b, and 6c, and inverts and outputs the output level of the input operation signal (corresponding to the operation signals A1 to A3).

When the contact signal is input, the processing means 5 determines whether the shutter is open, stopped or closed, and outputs control signals B1 to B3 according to the determination. By the way, diodes D1 to D3 are provided on a signal line between the input terminal of the processing means 5 and the operation unit 2A. This diode D1
.About.D3 are provided in order to prevent an operation signal from being erroneously output when the processing unit 5 runs away and an H level is output from the input terminal. Although only the input of the operation unit 2A is described in the processing means 5 shown in the figure, in addition to this, a limit switch for detecting the opening / closing limit position of the shutter, an obstacle sensor for detecting an obstacle, and the like are also provided. Various signals are input, and the processing means 5 controls the opening and closing of the shutter based on these input signals and outputs control signals B1 to B3.

The blocking means 7 comprises open, stop and close logic circuits 7a, 7b and 7c, respectively. The open and closed logic circuits 7a and 7c are AND circuits, and the stop logic circuit 7b uses an OR circuit and outputs drive signals C1 to C3, respectively. These logic circuits 7
a, 7b and 7c determine the validity of the input signals of the control signals B1 to B3 based on the operation signals A1 to A3, and
Drive signals C1 to C3 corresponding only when 1 to B3 are valid
Is output (details will be described later).

The driving means 8 includes a switching transistor Tr (Tr1 to Tr3) having a common emitter and a driving relay R
(R1 to R3). Each logic circuit 7a, 7
The drive signals output from b and 7c are input to the bases of the transistors Tr1 to Tr3, respectively. The collector of each transistor Tr is connected to the drive relay R. As a result, when an H-level drive signal is output, the corresponding transistor Tr is turned on and the drive relay R is operated (energized). By the operation of the drive relay R, a relay contact provided on a power line (not shown) of the switch is closed (ON), and the operation of the switch is controlled in accordance with the drive signal. For example, Tr1 becomes O by the output of the open drive signal.
N, the drive relay R1 is energized to supply power in the opening direction to the switch, and the shutter curtain moves in the opening direction. When an L-level drive signal is output, the corresponding transistor Tr is turned off, and the drive relay R does not operate.

Next, the operation of the above configuration will be described. In the non-operation state, that is, in the state in which the “open”, “stop”, and “close” contacts 2a, 2b, and 2c of the operation unit 2A are open (OFF), the power supply 4 operates the processing unit 5. The voltage of the signal is maintained at the H level. Therefore, the output A1 to A3 of the operation signal is inverted to the L level by the inversion means 6, and is output to each of the logic circuits 7a, 7b, 7c. Further, the processing means 5 connected in parallel with each of the NOT circuits 6a, 6b, 6c detects that each contact is in the OFF state, and outputs the L-level control signals B1 to B3 to each of the logic circuits 7a, 7b, 7c. Therefore, each of the logic circuits 7a, 7b, 7c outputs the L-level drive signal C1-C.
3 to the driving means 8, and the transistors Tr1 to Tr
3 is not turned on, and the shutter is kept stopped.

Here, when the "open" or "close" contacts 2a and 2c of the operation section 2A are not operated (contacts are open), the processing means 5 goes out of control and the like.
Erroneously outputs the H-level control signals B1 and B3 for instructing "open" or "close", the L-level operation signals A1 and B1 from the "open" or "closed" NOT circuits 6a and 6c. Since A3 is inverted and output, the open or closed logic circuits 7a and 7c maintain the drive signals C1 and C3 at the L level by AND output, respectively. For this reason, the transistors Tr1 and Tr3 do not turn on, and the shutter does not move in the opening or closing direction. In the state where the contact 2b of the operation unit 2A is not operated (the contact 2b is open),
If the processing unit 5 outputs the “stop” control signal B2 at H level due to runaway of the processing unit 5, NOT
Since the "stop" operation signal A2 is inverted and output at the L level from the circuit 6b, the stop logic circuit 7b outputs the H-level drive signal C2 as a logical sum output. This drive signal is input to the drive circuit 8 and the transistor Tr2
As a result, the drive relay R2 operates, and the shutter stops.

The "open" contact 2a is closed (O
N), the NOT circuit 6a inverts and outputs the H-level operation signal A1. On the other hand, the processing unit 5 detects that the “open” contact has been turned on, and outputs an H-level control signal B1. These signals are output to the open AND circuit 7.
a and the H level drive signal C
Outputs 1. This drive signal is input to the drive circuit 8,
The drive relay R1 is operated by the transistor Tr1,
The shutter will be opened. When the raised shutter reaches the upper limit and detects that the limit switch is turned on, the processing unit 5 sets the control signal B2 to the H level. In this case, the OR circuit 7b outputs the drive signal C2 at H level, the drive relay R2 is operated by the transistor Tr2, and the shutter is automatically stopped.

Further, the "closed" contact 2c is closed (O
N), the NOT circuit 6c inverts and outputs the H-level operation signal A3. On the other hand, the processing unit 5 detects that the “closed” contact has been turned on, and outputs an H-level control signal B3. These signals are output from the closed AND circuit 7.
c, and the logical sum of the driving signal C
3 is output. This drive signal is input to the drive circuit 8,
The drive relay R3 is operated by the transistor Tr3,
The shutter will be closed. When the shutter that has descended reaches the lower limit, the processing unit 5 stops the detection by detecting a limit switch or the like in the same manner as described above.

Here, the "open" contact 2a is closed (O
N) At this time, even if the H-level control signal B3 for instructing “close” is erroneously output due to runaway of the processing means 5 or the like, the “closed” contact 2c is open (OFF).
The "closed" NOT circuit 6c inverts and outputs the L-level operation signal A3. Therefore, the closed AND circuit 7c has H
The control signal B3 at the level and the operation signal A3 at the L level are input, and the logical product of them outputs a drive signal C3 at the L level. Therefore, the transistor Tr3 does not operate, and
The shutter does not move in the closing direction. Also,
Since the "open" contact 2a is closed, the operation signal A1 at the H level is output, but the control signal B1 is maintained at the L level. The drive signal C1 is output.
Therefore, the transistor Tr1 is not operated, and the shutter does not move in the opening direction.

Similarly, the "closed" contact 2c is closed (O
N) At this time, even if the H-level control signal A3 for instructing "opening" is erroneously output due to runaway of the processing means 5 or the like, the "open" contact 2a is open (OFF).
The "open" NOT circuit 6a outputs an L-level operation signal A1. For this reason, the H-level control signal B1 and the L-level operation signal B3 are input to the open AND circuit 7a, and the L-level drive signal C1 is output by the logical sum. Therefore, the transistor Tr1 is not operated, and the shutter does not move in the opening direction. Further, since the "closed" contact 2c is closed, the operation signal A3 at the H level is output, but since the control signal B3 is maintained at the L level, L is calculated by the logical product of the open AND circuit 7c. The level of the drive signal C3 is output. Therefore, the transistor Tr3 is not operated, and the shutter does not move in the closing direction.

When either of the contacts 2a and 2c of "open" or "closed" is closed (ON), the H-level control signal B instructing "stop" due to runaway of the processing means 5 or the like.
Even if erroneous output signal 2 is output, the "stop" NOT circuit 6b is used because the "stop" contact 2b is open (OFF).
Inverts and outputs the L-level operation signal A2. However, since the H-level control signal B2 is input to the stopped OR circuit 7b, the H-level drive signal C2 is obtained by the logical sum.
2, the transistor Tr2 operates, and the shutter is stopped (maintained in the state).

Further, the "stop" contact 2b is closed (O
N), the NOT circuit 6b inverts and outputs the H-level operation signal A2. On the other hand, in the processing means 5, the "stop" contact 2
It detects that b has been turned on and outputs an H-level control signal B2. These signals are input to the stop OR circuit 7b, and the logical sum of them outputs an H-level drive signal C2 instructing "stop". This drive signal is input to the drive circuit 8, and the drive relay R2 is operated by the action of the transistor Tr2, and the shutter is stopped.

Here, the "stop" contact 2b is closed (O
N) Even if the control signals B1 and B3 at H level instructing "open" or "close" due to runaway of the processing means 5 are erroneously output, the "open" or "closed" contact 2a , 2c are open (OFF), and the "open" or "closed" NOT circuits 6a, 6c output L-level operation signals A1, A3. Therefore, an open or closed AN
The D circuits 7a and 7c receive H-level control signals B1 and B3 and L-level operation signals A1 and A3, respectively, and output L-level drive signals C1 and C3 based on their logical product. Therefore, the transistors Tr1 and Tr3 do not operate, and
The shutter does not move in either the open or closed direction. In this case, the control signal B2 remains at the L level, but since the “stop” contact 2b is closed, the “stop” NOT circuit 6b outputs the H-level operation signal A
2 is output. Therefore, the stopped OR circuit 7b has L
Level control signal B2 and H level operation signals A1, A3
Is input, and the logical sum of the input signal and the driving signal C of the H level
2 is output. This drive signal is input to the drive circuit 8,
The drive relay R2 operates by the operation of the transistor Tr2, and the shutter stops.

As described above, in the open and closed AND circuits 7a and 7c, the H level drive signals C1 and C3 are not output unless both the operation signals A1 and A3 and the control signals B1 and B3 are at H level. On the other hand, stop OR
In the circuit 7b, if at least one of the operation signal A2 and the control signal B2 is at the H level, the drive signal C2 is output. As described above, even when the processing unit 5 malfunctions, the shutter always operates with the stop priority. The states described above are shown in Tables 1 to 3 below. Tables 1 to 3 show the input / output state of each circuit of the blocking means 7. Table 1 is a truth table showing the output state of the drive signal C1 based on the operation signal A1 and the control signal B1 input to the AND circuit 7a, and Table 2 is based on the operation signal A2 and the control signal B2 input to the OR circuit 7b. A truth table showing an output state of the drive signal C2, and Table 3 shows a drive signal C based on the operation signal A3 and the control signal B3 input to the AND circuit 7c.
3 is a truth table showing an output state of No. 3;

[0030]

[Table 1]

[0031]

[Table 2]

[0032]

[Table 3]

Next, FIG. 2 is a circuit diagram showing a second embodiment of the present invention. The processing unit 5 requires a predetermined processing time from receiving an operation signal to outputting a control signal to execute a predetermined control program. Therefore, each of the operation signals A1 to A3 and the control signals B1 to B input to the blocking unit 7
It is desirable to adopt a configuration in which the timings of the inputs of the three are synchronized. For this reason, in this embodiment, the operation signals A1 to A1
A delay circuit 9 is provided after the inverting means 6 on the signal line A3. The resistor r and the capacitor C constituting the delay circuit 9
Is determined so as to match the processing time of the processing means 5.
Each contact 2a, 2b, 2
It is also possible to avoid chattering of c.

In each of the embodiments described above, the operation unit 2
A is configured by a switch box wired to the control means 3, but is not limited to this. For example, a wireless remote controller that remotely controls a shutter can be used. The wireless remote controller includes a transmitter and a receiver, and the transmitter wirelessly transmits operation signals of opening, closing, and stopping to the receiver, and the receiver receives the operation signals to operate the operation unit 2A. An operation signal corresponding to the contact output of each of the contacts 2a, 2b, 2c is output to the control means 3. Even with this configuration, the same functions and effects as those of the above embodiment can be obtained.

In the above embodiment, the processing means 5 outputs the drive signal only when the operation signal is pressed and controls the drive of the switch only during the press period. For this purpose, the drive relays R1 to R3 may be energized by a self-holding circuit. According to this, the processing unit 5 does not need to continuously output the drive signal during opening and closing of the opening and closing body.

In the above embodiment, the reversing means 6 has N
The OT circuit and the blocking means 7 are ANDed with AND circuits 7a and 7c.
The configuration using the circuit 7b has been described.
It may be constituted by another logic circuit such as an AND circuit. That is, the blocking unit 7 includes the operation signals A1 to A3 input via the bypass signal path 10 and the control signal B1 output from the processing unit 5.
Drive signals C1 to C3 for driving the opening / closing member only when the output levels of.
May be configured as a logic circuit that outputs. As described in the above embodiment, the stop signal line may be configured to output the stop drive signal C2 only by inputting one of the operation signal A2 and the control signal B2.

Next, a third embodiment of the present invention will be described with reference to FIG. In the present embodiment, a detection unit 2B is provided as another signal output unit 2 in addition to the components of the first embodiment. The detection unit 2B detects the operation of each component provided in the shutter and outputs a detection signal to the processing unit 5. The detection unit 2B includes, for example, a heat detection unit that detects overheating of the drive motor that drives the shutter, a heat detection unit that detects heat and smoke in the event of a fire near the shutter, and a smoke detection unit. In addition, there are an upper and lower limit switch for detecting upper and lower limit positions of a shutter, and an obstacle sensing unit for detecting contact of an obstacle when the shutter is opened and closed. Each of these components outputs a detection signal for stopping (including forcibly stopping) the shutter that is being opened and closed at the time of detection. More detailed information, such as temperature information from the heat detector, is transmitted from each component to the processing means 5 via a transmission line (not shown).

This detection signal is input to the processing means 5 and also to the OR circuit 7b of the blocking means 7 in parallel with the processing means 5 via the bypass signal path 10b. Further, the processing means 5 controls the stop control signal B based on the input of the detection signal.
2 is output. A NOT circuit 6d as an inverting means 6 is provided in the detour signal path 10B.

Next, the operation of the above configuration will be described. The case where the detection unit 2B is an obstacle detection unit will be described as an example. The detection unit 2B includes a transmitter provided on a seat plate at the lower end of a shutter curtain and a receiver provided on a shutter case. The device wirelessly transmits a sensing signal to the receiver by infrared rays or the like when the seat plate switch is activated by contact of an obstacle with the seat plate. When receiving the sensing signal, the receiver outputs the sensing signal to the processing means 5. That is, this receiver
A contact 2d for outputting the voltage of the detection signal at the H level when an obstacle is detected is provided. The contact 2d can be constituted by either a contact such as a relay contact or a non-contact output such as a switching transistor.

In the non-detection state, that is, when the contact 2d of the detection unit 2B is open (OFF),
The voltage of the detection signal for the processing means 5 is maintained at the H level by the power supply 4b. Therefore, the output A4 of the detection signal is inverted to the L level by the NOT circuit 6d, and is output to the OR circuit 7b. Further, the processing means 5 outputs an L-level control signal B2 to the OR circuit 7b. Therefore, O
The R circuit 7b outputs an L level drive signal C2 to the drive means 8, does not turn on each transistor Tr2, and keeps the shutter in a stopped state. Further, the contact 2d is closed (O
N), when the L level detection signal is output, the NOT circuit 6d outputs the inverted H level operation signal A2. On the other hand, the processing means 5 detects the detection signal and outputs an H level control signal B2. These signals are supplied to the OR circuit 7b.
H that indicates “stop” by the logical sum
A level drive signal C2 is output. This drive signal is input to the drive circuit 8, and the drive relay R2 is operated by the action of the transistor Tr2, and the shutter is stopped.

Here, when the contact 2d of the detection unit 2B is closed (ON), even if the H-level control signal B2 for instructing "stop" is not output due to runaway of the processing means 5 or the like, the stop is not performed. The H-level detection signal A4 is input to the OR circuit 7b, and an H-level drive signal C2 is output by the logical sum of the H-level detection signal A4. This drive signal is input to the drive circuit 8, and the drive relay R2 is operated by the action of the transistor Tr2 to stop the shutter. Further, regardless of the open / close state of the contact 2d of the detection unit 2B, the operation unit 2
When the "stop" contact 2b of A is closed (ON), the NOT circuit 6b inverts and outputs the H-level operation signal A2.
The signal is input to the stop OR circuit 7b, and the logical sum of the
An H-level drive signal C2 for instructing "stop" is output. This drive signal is input to the drive circuit 8, and the drive relay R2 is operated by the action of the transistor Tr2, and the shutter is stopped. At this time, even if the control signal B2 is at L level due to the runaway of the processing means 5, the OR circuit 7b outputs the H level drive signal C2 to stop the shutter because the operation signal A2 is at H level. As described above, the operation unit 2A is operated to "stop" or the detection unit 2B
When the detection signal is output from the shutter, the shutter can be stopped immediately.

In the above description, the example in which the detection unit 2B is constituted by the obstacle detection unit has been described. However, the detection signals of other plural components such as the above-mentioned upper and lower limit switches are also used as the detour signal paths 10b. And OR all of the blocking means 7
If the input to the circuit 7b is adopted, a plurality of detection units 2B
If the detection signal is output from any of the above, the shutter can be immediately stopped. In the above description, the processing unit 5 is configured to input the input terminal (port) of the contact 2b of the operation unit 2A and the input terminal (port) of the contact 2d of the detection unit 2B from different terminals.
The present invention is not limited to this. For example, as shown in FIG. 4, the contact 2d of the detection unit 2B is connected in parallel with the contact 2b of the operation unit 2A, and the contact 2d is controlled to be opened and closed by the detection unit 2B. As shown, a configuration may be adopted in which the opening and closing of the contact 2b is controlled by the detection unit 2B. By closing the contacts 2b and 2d by the detection unit 2B, the detection signal is supplied to the processing unit 5 as the operation signal A2, and the shutter can be controlled to stop in the same manner as described above.

In each of the above embodiments, the shutter has been described as an example of the opening / closing member. However, the opening / closing member such as a door or a gate can be applied to other opening / closing members as long as the opening / closing member can be controlled. The same operation and effect as the embodiment can be obtained.

[0044]

As described above, in the opening / closing body control system according to the present invention, even if an abnormality occurs in the output of the control signal due to failure or runaway of the processing means for controlling opening / closing of the opening / closing body.
Based on the input signal, the validity of the control signal is determined and a drive signal for opening / closing the opening / closing body is outputted, so that the movement of the opening / closing body is controlled in the opening and closing directions due to failure of the processing means or runaway. Such a malfunction can be prevented, and the stop operation can be controlled so as to be prioritized. This can be configured simply and inexpensively. The signals input to the processing means include:
There are an operation signal for opening and closing the opening / closing body, and a detection signal for detecting an operation state of a mechanism related to opening and closing of the opening / closing body, and any of the signals can determine the validity of the control signal processed and output by the processing unit, Malfunction of the opening / closing body can be prevented.

[Brief description of the drawings]

FIG. 1 is a circuit diagram of a first embodiment of a control system for an opening / closing body according to the present invention.

FIG. 2 is a circuit diagram of a second embodiment of the opening / closing body control system according to the present invention.

FIG. 3 is a circuit diagram of a third embodiment of a control system for an opening / closing body according to the present invention.

FIG. 4 is a circuit diagram showing a modification of the third embodiment.

FIG. 5 is a circuit diagram showing a modification of the third embodiment.

FIG. 6 is a circuit diagram showing a conventional opening / closing body control device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Control system, 2 ... Signal output means, 2A ... Operation part,
2B: detection unit, 3: control unit, 5: processing unit, 6: inversion unit, 7: blocking unit, 8: driving unit, 9: delay circuit, 1
0: Detour signal path.

Claims (6)

[Claims] 1. A signal output means for outputting a signal for opening, closing, and stopping an opening / closing body; a processing means for outputting a control signal for opening / closing an opening / closing body based on a signal output from the signal output means; A bypass signal path which is provided in parallel with the processing means and outputs a signal output from the signal output means to a subsequent stage without passing through the processing means; and a control signal of the processing means and a signal of the bypass signal path. Is input, the validity of the control signal is determined by comparing it with the signal of the signal output unit, and a blocking unit that controls the output of a drive signal for opening and closing the opening and closing unit; and a switch that drives the opening and closing unit. And a drive unit that operates in response to the input of each of the drive signals. 2. The signal output means according to claim 1, wherein said signal output means comprises an operation unit having an open / close / stop switch and outputting an operation signal for opening / closing an opening / closing body based on the operation of said switch. The opening / closing body control system as described in the above. 3. An AND circuit for performing an AND operation based on the opening control signal and the opening operation signal, and performing an AND operation based on the closing control signal and the closing operation signal. 3. An AND circuit, and an OR circuit that performs a logical sum operation based on the stop control signal and the stop operation signal, and outputs a drive signal while satisfying respective logical conditions.
The opening / closing body control system as described in the above. 4. The signal output means according to claim 1, wherein said signal output means comprises a detector for detecting an operation state of each mechanism when the opening / closing body is opened / closed and outputting a detection signal for controlling the opening / closing of the opening / closing body. Opening and closing body control system. 5. The detour signal path is provided with inverting means for inverting an output level of the signal output means, and the blocking means is provided with an output level of the inverting means and an output level of a control signal output by the processing means. 2. The control system for an opening / closing body according to claim 1, wherein the control signal is checked to determine the validity of the control signal, and the output level of the drive signal is prevented from fluctuating only by the output level of the control signal. 6. The detour signal path is provided with delay means for delaying a signal output from the signal output means at a timing synchronized with a processing time until each of the control signals is output from the processing means. The control system for an opening / closing body according to claim 1.