JP2000248863A - Opening/closing body control unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To detect the abnormality of a control signal sent from an input means side, and prevent the occurrence of control failure and erroneous opera tion of an opening/closing body even in the case of the short of a connection line or the breakdown of an input means. SOLUTION: The control means 3 stores any depressed one of operation switches 2 provided on an input means 1 and its continuous time of depression in a storing part 8. If the depression time of the operation switch 2 is within the limit time set in a setting part 7, it executes ordinary opening and closing control, however, if exceeds the limit time, determination is made as the short of a connection line 5 and hence a abnormal state. Therefore, it carries out control at abnormal time, and also controls to bring an opening and closing body back to a state prior to opening/closing operation.

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 control device for controlling the opening / closing of an opening / closing body, and more particularly to an abnormality of a control signal transmitted from another input means connected to a control means via a connection line. The present invention relates to an opening / closing body control device capable of detecting an open / close state and preventing erroneous control of the opening / closing body due to a short circuit of a connection line.

[0002]

2. Description of the Related Art A control means controls opening and closing of an opening and closing body based on an operation of an operation switch provided on an input means. When the opening / closing member is a shutter, the operation switch is arranged on a wall or the like remote from the shutter. The input means and the control means are connected via a connection line of a predetermined length, transmit a control signal for opening and closing based on the operation state of the operation switch to the control means, and the control means drives the shutter motor in accordance with the control signal. Control to open, close, and stop the shutter.

FIG. 7 is a configuration diagram showing the connection lines.
The input means 30 is provided with three operation switches 30a, 30b, 30c for opening, closing, and stopping the shutter. One end of each operation switch has three connection wires 31
a, 31b, and 31c are connected to input terminals of the control means (not shown), and the other end is connected to an input terminal of the control means via a common line 31d. Other input means include fire and smoke detectors and obstacle detectors for detecting obstacles when opening and closing the door. These may also be connected to the control means via the connection line 31 to transmit a sensing signal, and the control means may execute control such as closing a shutter when the sensing signal is input.

[0004]

The connection line 31 is
At the time of wiring work at the time of construction, nailing after construction, connection wire 31
May be short-circuited inside the connection line 31 due to deterioration of the connection line 31.
When the connection line 31 is short-circuited, the control means
There is a possibility that the control of the opening / closing body corresponding to the control signal sent from the computer becomes impossible or malfunctions. Also,
Not only the short-circuit of the connection line 31 but also the control unit may malfunction when an abnormal control signal is sent out for some reason, for example, a failure of the input unit 30.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and can detect an abnormality of a control signal sent from an input means, and can detect a short circuit of a connection line or a failure of an input means. An object of the present invention is to provide an opening / closing body control device capable of preventing the opening / closing body from being uncontrollable or malfunctioning.

[0006]

According to a first aspect of the present invention, there is provided an opening / closing body control device for controlling opening / closing of an opening / closing body, and for opening / closing the opening / closing body. In the opening / closing body control device in which the input means for sending the control signal to the control means is connected via a connection line, the output state of the control signal sent from the input means is set to an output state serving as a preset reference. Control means is provided for judging whether the output state of the control signal is normal or abnormal by comparing.

Further, the control means for controlling the opening and closing of the opening and closing means and the input means for sending a control signal for opening and closing the opening and closing means to the control means are connected via a connection line. A control unit for determining whether the output time of the control signal is normal or abnormal by comparing the output time of the control signal sent from the input means with a preset reference time limit. Means are provided.

According to a third aspect of the present invention, the control means controls the opening / closing of the opening / closing member for a period of time during which the control signal is continued to return to the original position before the occurrence of the abnormality as the processing at the time of the abnormality. May be executed.

According to a fourth aspect of the present invention, a control means for controlling the opening and closing of the opening and closing means and an input means for sending a control signal for opening and closing the opening and closing body to the control means are connected via a connection line. In the opening / closing body control device, the connection lines are connected to the contacts of the input means for opening / closing the opening / closing body, and one common connection line connected to each contact. A plurality of input terminals to which the signal connection lines are respectively connected, and a plurality of the signal connection lines and the common connection line to be connected to the control means. Are provided, and each signal connection line is short-circuited between the input terminal and the output terminal, and the control means is connected to the signal connection line and the common connection line, respectively. Output terminals for individual predetermined signal waveforms From the input terminal, and detects the waveform of the control signal input from each of the input terminals and short-circuits the connection line connected to the input terminal based on the input of a waveform different from a preset waveform or It is characterized by detecting a contact failure of the contact.

According to a fifth aspect of the present invention, the control means sequentially outputs a single-pulse signal within a predetermined period from an output terminal to the signal connection line and the common connection line. The detection of a single pulse output from another output terminal on each of the input terminals may detect a short circuit of the connection line connected to the input terminal or a contact failure of the contact.

According to a sixth aspect of the present invention, the control means according to the fourth aspect continuously outputs a predetermined predetermined level voltage to the signal connection line, and outputs a ground voltage to the common connection line. And output of the control signal sent from the input means is set in advance by detecting opening and closing of the contact connected to the input terminal based on a change in the voltage level of the input terminal. The output time of the control signal may be determined to be normal or abnormal by comparing with a reference time limit.

According to a seventh aspect of the present invention, the control means includes a check mode for applying and outputting a predetermined signal waveform according to the fourth aspect from an output terminal; The normal mode for continuously outputting the voltage can be switched to any one of the modes.

An example in which the input means 1 is provided with an operation switch 2 for opening and closing the body will be described with reference to FIG. When the release operation switch 2A is pressed, the control means 3 detects the duration of the release control signal sent by the depression. If the duration is within the limit time, for example, 3 seconds, it is determined to be normal. If the duration exceeds the limit time, it is not a normal press, and the contact of the operation switch 2A remains in the closed state. It is determined that there is a defect, or that the connection line 5a of the operation switch 2A is short-circuited with another connection line, and an abnormality processing is executed.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS (First Embodiment) FIG. 1 is a block diagram showing an overall configuration of an opening / closing body control device according to the present invention.
The device is roughly composed of an input unit 1, a control unit 3, and an opening / closing body driving unit 4. The input means 1 has, for example, a configuration in which a plurality of operation switches 2 for opening and closing the opening and closing body are provided as shown in the figure. The operation switch 2 is connected to a processing unit 6 inside the control unit 3 via a connection line 5.

The processing unit 6 is composed of a microcomputer or the like, and is connected to a setting unit 7 and a storage unit 8. Based on the operating conditions set in the setting unit 7, the opening / closing control of the opening / closing body is performed using the storage unit 8 as a work area. Execute That is, the processing unit 6 includes the electromagnetic relay 9
The power supply to the motor of the driving means 3 is switched by opening and closing a relay contact provided on a power supply line supplied to the power supply line to open, close, stop, and the like. The processing unit 6 outputs a control signal corresponding to the electromagnetic relay 9 based on the input of each control signal. The electromagnetic relay 9 includes a processing unit 6
And a self-holding means for continuously controlling the opening and closing of the opening and closing body in a corresponding direction when a driving signal of at least one pulse is output from the controller.

The setting unit 7 uses, for example, a dip switch, and sets an abnormality detection condition for detecting an abnormal state of the control signal. The storage unit 8 is composed of, for example, a rewritable memory, and stores an abnormal state of the control signal and a time during which the abnormal state has continued.

FIG. 2 is a circuit diagram showing a connection configuration between the input means 1 and the processing section 6. As shown in FIG. The input means 1 is provided with a plurality of operation switches 2. In the illustrated example, three operation switches 2A to 2C are provided for opening, closing, and stopping the opening / closing body. These operation switches 2A to 2C
Has one end connected to signal connection lines 5a to 5c, and the other end connected to a common connection line 5d.

The CPU 10 of the processing section 6 has an input terminal a and an output terminal b. The connection lines 5a to 5c for the signals are connected to the input terminals a1 to a3, respectively.
The output terminals b1 to b4 are connected to signal connection lines 5a to 5c and a common connection line 5d, respectively.

The output terminals b1 to b4 are connected to the respective connection lines 5a to 5
For d, a pulse having a predetermined width at a predetermined voltage (V3) is sequentially output. FIG. 3 is a timing chart showing output pulses. As shown, an output pulse B1 is output from the output terminal b1 at a predetermined cycle T. This cycle T
Is set to a period sufficiently shorter than the operation time of the operation switch 2 (contact closing time). And the output terminal b
2 outputs an output pulse B2 at a predetermined interval T1 with respect to the output pulse B1. Similarly, output terminal b
The output pulses B3 and B4 are output from the output pulses B3 and B4 at a predetermined interval T1 with respect to the output pulses B2 and B3, respectively. The output pulses B1 to B4 output from the output terminals b1 to b4 are output within a period T.

The output pulses B1 to B4 are connected to the connection line 5a.
Through 5d, the respective operation switches 2A to 2C of the input means 1
And output pulses B1 to B4 are fed back to the input terminals a1 to a3 of the CPU 10 at the short-circuit point P of the connection lines 5a to 5c. Thereby, the CPU 10
This output pulse B is output simultaneously with the output of the output pulses B1 to B3.
1 to B3 are input to the input terminals a1 to a3 and detected. Any one of the operation switches 2 provided on the input means 1
When A to 2C are operated, the output pulse B4 output to the common connection line 5d is detected at the input terminal of the connection line connected to the operated operation switch.

The CPU 10 has input terminals a1 to a
3, when this output pulse is detected at the output timing of the output pulse B4, it is determined that the operation switch 2 connected to the detected input terminal a has been operated, and the corresponding opening / closing control is executed. .

Next, the judgment processing in the processing section 6 will be described. FIG. 4 is a timing chart showing the state of the pulse waveform appearing at the input terminal a of the CPU 10.

FIG. 4A shows a pulse waveform appearing at the input terminal a when the operation switch 2A of the input means 1 is operated (closed contact). At the input terminals a1 to a3 of the CPU 10, the output pulses B1 to B3 are detected simultaneously with the output of the output pulses B1 to B3. When the operation switch 2A is pressed, the output pulse B4 output to the common connection line 5d appears at the input terminal a1 via the operation switch 2A to the connection line 5a and is detected. The CPU 10 determines that the operation switch 2A has been operated based on the detection of the output pulse B4 at the input terminal a1, and executes control for opening the opening / closing body correspondingly.

Similarly, when the operation switch 2B is operated, the output pulse B4 is detected at the input terminal a2 via the operation switch 2B, and the closing control of the opening / closing body is executed. When the operation switch 2C is operated, the output pulse B4 is input to the input terminal a3 via the operation switch 2C.
Is detected and stop control of the opening / closing body is executed.

FIG. 4B shows a pulse waveform when the connection lines 5a and 5b are short-circuited. Input terminal a1 of CPU 10
The output pulses B1 to B3 are detected simultaneously with the output of the output pulses B1 to B3. At the same time, connection line 5
The output pulse B1 output to the connection line 5a due to the short circuit between the terminals a and 5b causes the input terminal a2
And the output pulse B2 output to the connection line 5b also appears at the input terminal a1 through the short-circuit point to the connection line 5a. The CPU 10 outputs the output pulse B2 to the input terminal a1.
Is detected, and based on the detection of the output pulse B1 at the input terminal a2, it is determined that the connection lines 5a and 5b are short-circuited.

Similarly, when the connection lines 5b and 5c are short-circuited,
The output pulse B3 is detected at the input terminal a2,
3, it is determined that the connection lines 5b and 5c are short-circuited based on the detection of the output pulse B2. Also, the connection lines 5a,
When 5c is short-circuited, the output pulse B1 is detected at the input terminal a3, and based on the detection of the output pulse B3 at the input terminal a1, it is determined that the connection lines 5a and 5c are short-circuited.
Then, the CPU 10 executes control (abnormal control) different from the normal operation of the open / close body by detecting these short circuits. For example, it is held in a stopped state so that the opening / closing body does not open / close unexpectedly.

FIG. 4C shows all lines (connection lines 5a, 5b,
5c and 5d) are pulse waveforms at the time of short circuit. When all the lines are short-circuited, all of the output pulses B1 to B4 are detected simultaneously with the output of the output pulses B1 to B4 at the input terminals a1 to a3 of the CPU 10, respectively. Thereby, the CP
U10 determines that all the lines are short-circuited. Control of the opening / closing body different from normal operation by detecting short circuit (abnormal control)
Execute

In the abnormal time control, in addition to controlling the opening / closing of the opening / closing body, an abnormal signal may be sent to an external notifying means (for example, a buzzer or a remote central control panel).

In the above description, the configuration has been described in which the CPU 10 executes the abnormal control when the connection line 5 is short-circuited. However, even when the operation switches 2 are simultaneously pressed, a control signal (output pulse B) similar to that at the time of a short circuit is input to the input terminal a, and simultaneous depression of the operation switches 2A and 2B can be detected. it can. Therefore, the CPU 10 may be configured to execute a control (simultaneous pressing control) different from the normal operation (simultaneous pressing control) when the simultaneous pressing of the plurality of operation switches 2 is detected. The simultaneous push control includes, for example, driving the shutter to open and close in a direction exceeding the open / close limit position when the shutter as the open / close body is installed. As described above, the above-described abnormal control and the simultaneous pressing control described as the control different from the normal control can be arbitrarily switched and set by setting the dip switch of the setting unit 7.

(Second Embodiment) In this second embodiment,
The short-circuit detection using each configuration of the first embodiment can be detected by switching to the check mode. The check mode is switched at the time of completion of construction or when trying to detect a short circuit after construction. Further, during a normal period in which the opening / closing member is opened and closed, the mode is switched to a normal mode so as to detect an output state of a control signal described later. These check modes,
The normal mode can be switched using switching means such as a dip switch (not shown), and the CPU 10 of the control means switches the operation mode in accordance with the operation of this switching means.

The processing for detecting a short circuit in the check mode is the same as in the first embodiment, and a description thereof will be omitted. Hereinafter, the configuration and operation in the normal mode will be described. In the normal mode, the CPU 10 does not output the output pulse B of the predetermined period T from the output terminals b1 to b4, and outputs the output terminals b1 to b3.
Continuously output an “H” level (a constant predetermined voltage (V3)). The output terminal b4 is at the “L” level (0 V)
Is output continuously.

In the normal mode, the circuit shown in FIG. 2 is an equivalent circuit shown in FIG. As shown
The connection lines 5a to 5c are applied with the voltage V3 and connected to the input terminals a1 to a3 of the CPU 10, and the connection line 5d is grounded (0
V) state. Thereby, based on the change of the level of the input terminals a1 to a3 from “H” to “L”, the operation of the operation switches 2A to 2C connected to the input terminals a1 to a3 whose levels have changed can be detected. Can be. That is, the voltage (0 V) of the “L” level appears at the input terminal a corresponding to the period during which the operation switch 2 is pressed.

In the setting section 7, a time limit for inputting the control signal is set in advance. For example, the normal pressing time of the operation switch 2 is set to a limit of 3 seconds by a dip switch or the like. The storage unit 8 stores the type of the control signal and the continuous input time of the control signal for each type.

The control contents of the processing unit 6 in the normal mode according to the above configuration will be described with reference to the flowchart of FIG. As an example, an opening operation by the operation switch 2A of the input unit 1 will be described. The CPU 10 detects an operation of the operation switch 2 of the input means 1 (input of a control signal) (SP
1). That is, when the operation switch 2A is pressed, the input terminal a1 becomes 0 V, and the CPU 10 detects that the operation switch 2A is pressed.

The CPU 10 controls the opening / closing of the opening / closing pair in the opening direction corresponding to the operation by detecting the depression of the operation switch 2A (SP2). Then, the duration of the control signal is stored in the storage unit 8 (SP3). That is, “open” by pressing the operation switch 2A and “XX seconds” of the time when the pressing is continued are stored.

Next, the CPU 10 determines whether or not the duration of the control signal has reached the limit time stored in the storage unit 8 (SP4). That is, it is determined whether three seconds have passed since the operation switch 2A was pressed, and if it was less than three seconds (SP4-NO), the process proceeds to SP2 and the opening / closing operation of the opening / closing body during the pressed time is performed. Continue (S
P2 to SP4 loop). On the other hand, when three seconds have elapsed since the operation switch 2A was pressed, the state of the input control signal is determined again (SP5). Here, when the control signal is not input (SP5-NO),
It is determined that the input is normal, and the opening / closing operation is continued (SP6).
That is, the opening operation corresponding to the operation of the operation switch 2A detected in SP1 is continued. Continuation at this time indicates that the opening and closing body is continuously driven in the opening direction by operating the self-holding of the electromagnetic relay 9.

On the other hand, when the control signal is continuously input (SP5-YES), it is determined that the control signal is in an abnormal state in which the duration of the control signal exceeds the limit time (SP7). For example, when the connection line 5a is short-circuited or the contact is kept closed due to a contact failure of the operation switch 2A or the like, an abnormal state can be determined. This abnormal state is reported from a notifying unit (not shown) to the effect that the abnormal state is present (SP
8). For example, an alarm sound is emitted from a lamp such as an LED or a buzzer.

Further, the processing unit 6 may be configured to execute “control different from normal time” corresponding to the abnormal state that has occurred, if necessary. For example, by a control signal continuously output due to the short circuit of the connection line 5a (or the continuous closing state of the contact of the operation switch 2A) as described above,
Control may be performed to return the opened and closed body to its original position.

The processing section 6 reads the contents stored in the storage section 5 (SP9). That is, "open" due to short-circuiting of the connection line 5a or continuous depression of the operation switch 2A and time "XX seconds" during which the control signal continues are read. The duration of the continuation is at most within the above limit time. Next, the processing unit 6
The control for eliminating this “release of XX seconds” is executed (SP
10). That is, the opening and closing of the opening and closing body is controlled in the direction of “closing for XX seconds”. Thus, the opening and closing body can be controlled to return to the opening and closing position before the abnormal transmission of the control signal.

During the period of the normal mode described above, the output pulse B is not sequentially output to each of the connection lines 5a to 5d.
5c can be detected. On the other hand, when the construction is completed or when an abnormality is detected after the construction, the connection mode is switched to the check mode so that each of the connection lines 5a to 5
It is possible to easily switch so as to detect in detail which connection lines are short-circuited in all of the intervals d.

In the specific example in the normal mode, the contact of the operation switch 2A is continuously closed, and the connection line 5 to which the operation switch 2A is connected is connected.
Although the short-circuit of a has been described as an example, the present invention is not limited to the operation switch 2A and the occurrence of an abnormality in the connection line 5a.
When the contacts B and 2C are continuously closed, and when a short circuit occurs in the connection lines 5b and 5c, the processing unit 6 can detect this abnormality in the same manner as described above.
8) can be performed. Further, a configuration may be adopted in which “control different from the normal state” described in SP9 and SP10 is executed.

Incidentally, in each of the above-described embodiments, an example in which the operation switch 2 for opening and closing the opening and closing body is provided as the input means 1 has been described. The input unit 1 is configured by a unit that sends a control signal to the processing unit 6 to control opening and closing of the opening and closing body. Therefore, it can also be constituted by a heat or smoke sensor, an obstacle sensor, or the like. These sensors are configured to open and close the respective contacts when detecting heat or smoke and when detecting an obstacle when the opening / closing body is opened / closed, and to send a control signal to the processing unit 6, which is the same as the contact of the operation switch. is there.

According to the processing section 6, an abnormal state can be detected for the control signal transmitted from such a sensor as described above. This makes it possible to detect an abnormal state of the control signal even when the control signal is continuously output due to the failure of the sensor or when the connection line is short-circuited. Thus, for example, if the control signal at the time of smoke detection in a normal state is a one-time input within three seconds, and if the control signal is continuously input for three seconds or more, the control signal of the smoke detection becomes abnormal. Can be determined. Thus, it is possible to prevent the opening / closing body from being unexpectedly opened / closed.

In the above embodiment, the abnormal state
The state in which the control signal is continuously output due to a short circuit or the like has been described as an example. The configuration is not limited to this, and the control signal may be configured to be “continuously output for a predetermined time” in a normal state. When handling the control signal in such a form, the processing unit 6 determines that the control signal is abnormal when detecting a state in which the control signal is not output continuously for a predetermined time. Such a signal form is set in the setting unit 7 in advance, and the process of determining the time limit in SP4 is determined to be normal when the time has reached the time limit and abnormal when the time has not reached the time limit. Should be executed.

In the above-described embodiment, the shutter is described as an example of the opening / closing member.
The present invention can be similarly applied to an opening / closing body such as a door, a blind, and a roll screen.

[0046]

According to the first aspect of the present invention, the output state of the control signal can be detected by comparing the control signal sent from the input means with the reference output state in advance. Thus, even if the input means malfunctions or a short circuit occurs in the connection line, the opening / closing body is not erroneously controlled to open / close. According to the second aspect of the present invention, it is possible to detect whether the control signal is normal or not by comparing the control signal sent from the input means with the reference output time in advance. The reference control signal is preset as a time limit, and can be easily determined by comparing with the time limit. Further, as described in claim 3, by executing control to return the opening / closing body to the original position in the event of an abnormality,
The opening / closing body can be returned to a normal position.

According to a fourth aspect of the present invention, a predetermined signal waveform is output to each connection line, and the state of the control signal is detected based on the input signal waveform. If this is the case, it becomes possible to detect a contact failure of the contact of the input means and a short circuit of the connection line. The signal waveform output to the connection line is configured to sequentially output a single pulse signal within a predetermined period to the connection line for each signal and the connection line for common use. Alternatively, a configuration may be adopted in which a constant predetermined voltage is continuously output to the signal connection line and the ground voltage is continuously output to the common connection line. Further, a configuration may be adopted in which these signal outputs are switched for each mode. Thus, according to claim 5, the control means detects which of the connection lines among the connection lines connected to the input terminal by detecting a single pulse output from the other output terminal on each input terminal. Is short-circuited or whether the contact is defective. on the other hand,
According to the sixth aspect, the pressing of the connection line connected to the input terminal can be detected based on the change in the voltage level of the input terminal, and the output time of the control signal sent from the input means is set in advance. By comparing with the reference time limit, it is possible to determine whether the output time of the control signal is normal or abnormal. Note that, in the present invention, the above-described effect can be obtained without changing the wiring configuration of the connection line connecting the input means and the control means.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of an opening / closing body control device of the present invention.

FIG. 2 is a circuit diagram showing a connection state of connection lines in the first embodiment.

FIG. 3 is a waveform chart output from an output terminal.

FIG. 4 is a waveform chart detected at an input terminal.

FIG. 5 is an equivalent circuit diagram showing a connection state in a normal mode according to the second embodiment.

FIG. 6 is a flowchart illustrating a processing procedure in a normal mode according to the second embodiment of the present invention.

FIG. 7 is a configuration diagram showing a connection state of a general connection line.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Input means, 2A-2C ... Operation switch, 3 ... Control means, 4 ... Drive means, 5 ... Connection line (5a-5c ... Signal connection line, 5d ... Common connection line), 6 ... Processing part, 7 ... Setting unit, 8 ... Storage unit, 9 ... Electromagnetic relay, 10 ... CPU, a1
Ａa3: input terminal, b1 to b4: output terminal, P: short-circuit point.

Claims (7)

[Claims] 1. An opening / closing body control device, wherein control means for controlling opening / closing of an opening / closing body and input means for sending a control signal for opening / closing the opening / closing body to the control means are connected via a connection line. By comparing the output state of the control signal sent from the input means with a preset reference output state,
An opening / closing body control device comprising: a control unit that determines whether an output state of the control signal is normal or abnormal. 2. An opening / closing body control device, wherein control means for controlling opening / closing of the opening / closing body and input means for sending a control signal for opening / closing the opening / closing body to the control means are connected via a connection line. By comparing the output time of the control signal sent from the input means with a preset reference time limit,
An opening / closing body control device comprising a control means for determining whether the output time of the control signal is normal or abnormal. 3. The control means executes, as the processing at the time of the abnormality, a control to return the opening and closing of the opening / closing body to the original position before the occurrence of the abnormality at a time equivalent to the time during which the control signal is continued.
An opening / closing body control device as described in the above. 4. An opening / closing body control device, wherein control means for controlling opening / closing of the opening / closing body and input means for sending a control signal for opening / closing the opening / closing body to the control means are connected via a connection line. The connection line comprises a number of signal connection lines respectively connected to the contacts of the input means for opening and closing the opening and closing body, and one common line commonly connected to each contact. A plurality of input terminals to which the signal connection lines are respectively connected, and a plurality of output terminals to which the signal connection lines and the common connection line are respectively connected. The signal connection lines are short-circuited between the input terminal and the output terminal, and the control unit outputs a predetermined signal waveform individually to the signal connection line and the common connection line. Apply the output from the terminal and Detects a waveform of a control signal input from each of the input terminals and detects a short circuit of the connection line connected to the input terminal or a contact failure of the contact based on an input of a waveform different from a preset waveform. An opening / closing body control device characterized in that: 5. The control means outputs a single-pulse signal sequentially from an output terminal to a connection line for each signal and a connection line for common use within a predetermined period, and outputs another signal on each of the input terminals. 5. The opening / closing body control device according to claim 4, wherein a short-circuit of the connection line connected to the input terminal or a contact failure of the contact is detected by detecting a single pulse output from the output terminal. 6. The control means according to claim 4, wherein a constant predetermined voltage is continuously output to said signal connection line.
A control for continuously outputting a ground voltage to the common connection line, detecting opening / closing of the contact connected to the input terminal based on a change in the voltage level of the input terminal, and transmitting from the input means. By comparing the output time of the signal with a preset reference time limit,
An opening / closing body control device for determining whether the output time of the control signal is normal or abnormal. 7. The control device according to claim 4, wherein said control means is connected to an output terminal.
7. A switch control device which can switch between a check mode for applying and outputting a predetermined signal waveform described in (1) and a normal mode for continuously outputting a voltage of a predetermined level according to (6).