JP6941433B2 - Opening and closing system - Google Patents

Description

The present invention relates to a technique for detecting a failure of a switch.

If the switch that opens and closes the electric circuit fails, the inconvenience that the electric circuit cannot be opened and closed when necessary occurs. Therefore, there is a need to detect a switch failure that occurs without the user's knowledge as soon as possible.

For example, Patent Document 1 is a patent document that discloses a technique for detecting a failure of a switch. In Patent Document 1, a first rectifying element that blocks the current flowing from the load side to the first switch is connected in series to the load side of the first switch, and the second switch is connected in parallel to these series circuits. A switch diagnostic device which is connected and further connected to a first resistor between the connection point of the first switch and the first rectifying element and the ground potential is described. The switch diagnostic apparatus described in Patent Document 1 first turns on the second switch, then turns the first switch off and on, and detects the voltage generated in the first resistor in each case of turning off and on. Then, it is determined whether or not the first switch is turned off and on based on the detected voltage.

Japanese Unexamined Patent Publication No. 2015-95442

In a mechanism for supplying electric power or an electric signal from the first device to the second device, it may be desired to cut off the energization between these devices in an emergency or the like. In this case, a switch for opening and closing the electric circuit between these devices is arranged between the first device and the second device, the switch is normally kept in the closed state, and the switch is opened and closed in an emergency or the like. The mechanism of opening the vessel is widely adopted.

In the above mechanism, when a failure (short circuit failure) that makes it impossible to switch the switch from the closed state to the open state occurs, the power or electric signal from the first device to the second device is cut off in an emergency or the like. You will not be able to. For example, in an emergency, when the power supply to the second device must be cut off promptly, if the electric circuit cannot be opened due to a short-circuit failure of the switch, the second device will continue to operate, causing a serious accident. There is a risk of inviting. Therefore, even in the above mechanism, there is a need to detect a switch failure that occurs without the user's knowledge as soon as possible.

In the above mechanism, when the switch is switched from the closed state to the open state in order to check for a failure of the switch, the supply of electric power or an electric signal to the second device is interrupted. Therefore, in order to check for a switch failure, it is necessary to suspend the operation of the second device. That is, the timing at which the failure of the switch can be inspected is limited to the timing at which the operation of the second device can be stopped. Therefore, it is difficult to check the switch failure frequently as necessary.

In view of the above circumstances, an object of the present invention is to provide a means for detecting a failure of a switch having an electric circuit while the electric circuit between the devices is maintained to be energized.

In order to solve the above-mentioned problems, the present invention instructs the switches of other electric circuits to open and close while maintaining the energization of one or more electric circuits among a plurality of connected electric circuits, each having a switch. When a switch failure is detected based on the energized state of the other electric circuit and a switch failure is detected, a detection device that instructs each switch of the plurality of electric circuits to open, and a predetermined device from the detection device. A first opening / closing system including an instruction device for instructing each switch of the plurality of electric circuits to open when a predetermined signal output at the time interval of the above is input and the predetermined signal cannot be received. Provided as an embodiment.

According to the opening / closing system of the first aspect, a failure of the switch of the electric circuit is detected while the electric circuit between the devices is maintained to be energized. Further, when the detection device for detecting the failure of the switch fails, the electric circuit between the devices is opened.

Further, the present invention instructs one or more switches of each of the other electric circuits to open / close while maintaining energization of one or more electric circuits of a plurality of connected electric circuits, each having a plurality of switches. When a detection device that detects a switch failure based on the energized state of the other electric circuit and a predetermined signal output from the detection device at a predetermined time interval are input and the predetermined signal cannot be received. A second aspect is provided as an opening / closing system including an instruction device for instructing one or more switches of each of the plurality of electric circuits to open.

According to the opening / closing system of the second aspect, a failure of the switch of the electric circuit is detected while the electric circuit between the devices is maintained to be energized. Further, even if any of the switches fails, the electric circuit between the devices can be opened. Further, when the detection device for detecting the failure of the switch fails, the electric circuit between the devices is opened.

In the opening / closing system of the second aspect described above, when a failure of any of the switches is detected, one or more switches of each of the plurality of electric circuits are instructed to open, which is adopted as the third aspect. May be done.

According to the opening / closing system of the third aspect, when a failure occurs in any of the switches, the electric circuit between the devices is opened.

In the opening / closing system of the third aspect described above, after detecting the failure of any of the switches, the opening / closing instruction and the opening / closing instruction are given in a plurality of electric circuits other than the electric circuit having the switch in which the failure is detected. The configuration of detecting the failure may be adopted as the fourth aspect.

According to the opening / closing system of the fourth aspect, even if a failure occurs in any of the switches, the electric circuits between the devices can be energized with respect to a plurality of electric circuits other than the electric circuit having the failed switch among the plurality of electric circuits. The detection of the failure of the switch of the electric circuit is continued in the maintained state.

The figure which shows the structure of the opening and closing system which concerns on one Embodiment. The block diagram which shows the hardware configuration of the detection device and the instruction device which concerns on one Embodiment. The flow chart of the detection process concerning one Embodiment. A block diagram showing a configuration of an opening / closing system according to a modified example. A flow chart of the detection process related to a modified example. A flow chart of the detection process related to a modified example.

[First Embodiment]
An embodiment of the present invention will be described. FIG. 1 is a diagram showing a configuration of an opening / closing system 1. The opening / closing system 1 is electrically connected between the input side device 2 and the output side device 3, and cuts off the electric power or the electric signal supplied from the input side device 2 to the output side device 3 in an emergency or the like in an emergency. Play a role. In the following description, it is assumed that the input side device 2 is a power supply device, and the output side device 3 is a device that operates by the electric power supplied from the input side device 2. However, the input side device 2 may supply a predetermined electric signal to the output side device 3, and the output side device 3 may be a device that operates according to the electric signal supplied from the input side device 2.

The opening / closing system 1 includes a plurality of electric circuits R (i) (i = 1, 2, ..., N (n ≧ 2)), a detection device 11, and an instruction device 12. The plurality of electric circuits R (i) are connected in parallel and have a common input end IN and a common output end OUT. Hereinafter, a plurality of electric lines R (i) connected in parallel will be referred to as "parallel electric lines RS".

Each of the plurality of electric circuits R (i) has a switch SW (i, j) (i = 1, 2, ..., N (n ≧ 2), j = 1, 2, ..., m (m ≧ 1)). Has. The method of the switch SW (i, j) is not limited. That is, the switch SW (i, j) may be any type of switch such as an electromagnetic relay (mechanical relay, contact relay) or a semiconductor relay (solid state relay, non-contact relay). When m is 2 or more, that is, when each of the electric circuits R (i) has a plurality of switches SW (i, j), as illustrated in FIG. 1, a plurality of switches are opened and closed in each of the electric circuits R (i). The vessels SW (i, j) are connected in series.

As long as the energization of one or more of the plurality of electric circuits R (i) included in the parallel electric circuit RS is maintained, the energization between the input side device 2 and the output side device 3 is maintained. At that time, the voltage of the electric power supplied from the input side device 2 to the output side device 3 is constant regardless of the number of the energized electric circuits R (i). On the other hand, when the energization of all the electric circuits R (i) of the parallel electric circuit RS is cut off, the energization between the input side device 2 and the output side device 3 is cut off.

Feedback signals FB (i) (i = 1, 2, ..., N (n ≧ 2)) are output to the detection device 11 from each of the plurality of electric circuits R (i). The feedback signal FB (i) is a voltage between each switch SW (i, m) (most output side switch SW (i, j)) of the plurality of electric circuits R (i) and the output terminal OUT. show. The feedback signal FB (p) of the electric circuit R (p) (p is an arbitrary natural number from 1 to n) states that all the switches SW (p, j) of the electric circuit R (p) are closed. It indicates ON, and indicates OFF when at least one switch SW (p, j) of the electric circuit R (p) is open.

FIG. 2 is a block diagram showing a hardware configuration of the detection device 11 and the instruction device 12. The detection device 11 includes a calculation unit 111, a storage unit 112, an input / output IF (Interface) unit 113, and a UI (User Interface) unit 114. The storage unit 112 includes a storage device such as a hard disk drive, and stores programs and data. The arithmetic unit 111 includes a processor and a memory used as a work area in data processing, and executes various data processing according to a program stored in the storage unit 112.

The input / output IF unit 113 includes a plurality of input terminals T (i) (i = 1, 2, ..., N (n ≧ 2)) corresponding to each of the plurality of electric circuits R (i), and the plurality of electric circuits R (i). The feedback signals FB (i) output from each of (i) are input to the corresponding input terminals T (i). The calculation unit 111 identifies the energized state of each of the plurality of electric circuits R (i) by the feedback signal FB (i) input to each of the input terminals T (i). That is, in the calculation unit 111, if the feedback signal FB (p) (p is an arbitrary natural number from 1 to n) indicates ON, the electric circuit R (p) is energized and the feedback signal FB (p) is OFF. If is shown, it is determined that the electric circuit R (p) is not energized.

The calculation unit 111 outputs an ON instruction signal or an OFF instruction signal to each of the plurality of switches SW (i, j) via the input / output IF unit 113. The ON instruction signal is a signal instructing the switch SW (i, j) to close, and the OFF instruction signal is a signal instructing the switch SW (i, j) to close.

The UI unit 114 includes, for example, a touch display in which a touch panel is laminated on the display surface of the display, displays various information, and accepts operations by the user. The UI unit 114 may be configured as a device separated from the main body of the detection device 11, and the UI unit 114 may be connected to the input / output IF unit 113.

The detection device 11 instructs each of the plurality of switches SW (i, j) to open / close at different timings, monitors the energized state of the electric circuit R (i) indicated by the feedback signal FB (i), and monitors the energized state. Detects a failure of the switch SW (i, j) that has been instructed to open / close based on the presence or absence of a change in. Hereinafter, the process performed by the detection device 11 to detect the failure of the switch SW (i, j) is referred to as "detection process". FIG. 3 is a flow chart of the detection process. The flow of the detection process will be described below.

The detection process is started, for example, in response to a start operation on the UI unit 114 by the user. With the start of the detection process, the calculation unit 111 first instructs all the switches SW (i, j) to close (step A01). Specifically, the calculation unit 111 outputs an ON instruction signal to all the switches SW (i, j). Each of the switches SW (i, j) that received the ON instruction signal performs a closing operation. The switch SW (i, j) that has already been closed when the ON instruction signal is received maintains the closed state. As a result, the parallel electric circuit RS is in a state in which all the switches SW (i, j) are closed.

Subsequently, the calculation unit 111 sets the initial value 1 in the counter p and the counter q for selecting the switch SW (i, j) (step A02). The counter p is a counter for selecting the p-th electric line, that is, the electric line R (p) from the plurality of electric lines R (i). The counter q is a counter for selecting the qth switch, that is, the switch SW (p, q) from the one or more switches SW (p, j) of the electric circuit R (p).

Subsequently, the calculation unit 111 instructs the switch SW (p, q) to open (step A03). Specifically, the calculation unit 111 outputs an OFF instruction signal to the switch SW (p, q). The switch SW (p, q) receives an OFF instruction signal and performs an opening operation.

Subsequently, the calculation unit 111 instructed to open the switch SW (p, q) based on the feedback signal FB (p) corresponding to the electric circuit R (p) having the switch SW (p, q) instructed to open in step A03. , Q) (in this case, a short-circuit failure) is detected (step A04). Specifically, the calculation unit 111 determines that the switch SW (p, q) has not failed if the feedback signal FB (p) indicates OFF, and opens / closes if the feedback signal FB (p) indicates ON. It is determined that the device SW (p, q) is out of order.

When a failure of the switch SW (p, q) is detected in step A04 (step A04: YES), the calculation unit 111 instructs all the switches SW (i, j) to open (step B01). Specifically, the calculation unit 111 outputs an OFF instruction signal to all the switches SW (i, j). The switches SW (i, j) that have received the OFF instruction signal each perform an opening operation.

The process of step B01 is a process of cutting off the power supply from the input side device 2 to the output side device 3 when a failure occurs in any of the plurality of switches SW (i, j). The output side device 3 is designed to perform a safe operation when the power supply is cut off. Therefore, when any of the plurality of switches SW (i, j) fails, the output side device 3 operates on the safe side to ensure safety.

Subsequently, the detection device 11 outputs the failure detection result by the calculation unit 111 (step B02). In the present embodiment, in step B02, the UI unit 114 displays a display for notifying the user of the switch SW (i, j) for which a failure has been detected. The display format performed by the UI unit 114 is, for example, a format in which a switch in which a failure is detected is illustrated on a diagram of a parallel electric circuit RS, or a text such as "Switch No. XX is out of order." It may be displayed in any format.

After executing step B02, the detection device 11 ends a series of detection processes.

When a failure of the switch SW (p, q) is not detected in step A04 (step A04: NO), the calculation unit 111 instructs the switch SW (p, q) to close (step A05). Specifically, the calculation unit 111 outputs an ON instruction signal to the switch SW (p, q). The switch SW (p, q) receives an ON instruction signal and performs a closing operation.

Subsequently, the calculation unit 111 instructed to close the switch SW (p, q) in step A05 based on the feedback signal FB (p) corresponding to the electric circuit R (p) having the switch SW (p, q) instructed to close. , Q) (in this case, open failure) is detected (step A06). Specifically, the calculation unit 111 determines that the switch SW (p, q) has not failed if the feedback signal FB (p) indicates ON, and opens / closes if the feedback signal FB (p) indicates OFF. It is determined that the device SW (p, q) is out of order.

When a failure of the switch SW (p, q) is detected in step A06 (step A06: YES), the detection device 11 performs the processes of steps B01 and B02, and ends a series of detection processes.

When a failure of the switch SW (p, q) is not detected in step A06 (step A06: NO), the calculation unit 111 determines whether the counter p at that time is n (the number of electric circuits) (step A06). A07). The process of step A07 determines whether the switch SW (p, q) selected as the target of the failure inspection at that time is the switch SW (n, q) of the last electric circuit (n). It is a process to do.

When it is determined in step A07 that the counter p is not n (step A07: NO), the calculation unit 111 adds 1 to the counter p (step A08). After that, the detection device 11 repeats the processes after step A03. The process of step A08 is a process for selecting a switch located one lower side in FIG. 1 of the switch SW (p, q) selected at that time as a target of a new open / close instruction. ..

When it is determined in step A07 that the counter p is n (step A07: YES), the calculation unit 111 determines whether the counter p at that time is m (the number of switches in each electric circuit) (step A09). ). In the process of step A09, is the switch SW (n, q) selected for failure inspection at that time the last switch SW (n, m) of the last electric circuit (n)? Is a process for determining.

When it is determined in step A09 that the counter q is not m (step A09: NO), the calculation unit 111 sets 1 to the counter p and adds 1 to the counter q (step A10). After that, the detection device 11 repeats the processes after step A03. In the process of step A10, among the switches SW (1, j) of the first electric circuit (1), the switch located on the right side of the switch SW (n, q) selected at that time is used. This is a process for selecting as the target of a new open / close instruction.

When it is determined in step A09 that the counter q is m (step A09: YES), the calculation unit 111 sets the counter p to 1 and the counter q to 1 (step A11). After that, the detection device 11 repeats the processes after step A03. The process of step A11 is a process for selecting the first switch SW (1,1) of the first electric circuit (1) as a target of a new switch instruction.

The above is the flow of the detection process performed by the detection device 11. According to the detection process described above, the switches are sequentially selected one by one from the plurality of switch SWs (i, j), and the selected switches fail (short-circuit failure and open failure). The presence or absence is checked. At the time of these inspections, since the input side device 2 and the output side device 3 are always energized by either electric circuit, the operation of the output side device 3 is stopped unless any switch fails. There is no such thing. Therefore, regardless of whether or not the operation of the output side device 3 can be stopped, the switch failure is inspected at a necessary frequency.

In the above description of the detection process, the frequency of switching the switch to be inspected, for example, the process of step A04 targeting a certain switch, and then the process of step A04 targeting the next switch. The time until the operation may be set as appropriate.

The detection process described above is executed by the detection device 11. Therefore, if the detection device 11 fails, the failure of the switch SW (i, j) is not detected, and even if a failure occurs in any of the switches, there is a risk that the failure will be overlooked. In order to avoid such inconvenience, the instruction device 12 included in the opening / closing system 1 detects a failure of the detection device 11, and when the failure of the detection device 11 is detected, between the input side device 2 and the output side device 3. Performs processing to cut off the energization.

The configuration of the instruction device 12 will be described with reference to FIG. The calculation unit 111 of the detection device 11 outputs a predetermined signal S to the instruction device 12 via the input / output IF unit 113 at a predetermined time interval.

The instruction device 12 includes a calculation unit 121, a storage unit 122, an input / output IF unit 123, and a display unit 124. The storage unit 122 includes a storage device such as a hard disk drive, and stores programs and data. The arithmetic unit 121 includes a processor and a memory used as a work area in data processing, and executes various data processing according to a program stored in the storage unit 122.

A signal S output from the detection device 11 at a predetermined time interval is input to the input / output IF unit 123. The calculation unit 121 measures the elapsed time after receiving the latest signal S via the input / output IF unit 123, and if the next signal S is not received before the elapsed time reaches the threshold value, the detection device It is determined that 11 is out of order.

When the instruction device 12 detects a failure of the detection device 11, the instruction device 12 instructs all the switches SW (i, j) to open via the input / output IF unit 123. Specifically, the instruction device 12 outputs an OFF instruction signal to all the switches SW (i, j). When each of the switches SW (i, j) receives the OFF instruction signal output from the instruction device 12, it performs an opening operation. As a result, the energization between the input side device 2 and the output side device 3 is cut off.

The display unit 124 displays various information. The display unit 124 may be configured as a device separated from the main body of the instruction device 12, and the display unit 124 may be connected to the input / output IF unit 123. When the calculation unit 121 detects a failure of the detection device 11, the display unit 124 displays a display for notifying the user of the failure of the detection device 11. For example, the display unit 124 displays a text such as "The failure detection function of the switch is stopped."

According to the opening / closing system 1 described above, it is possible to avoid the inconvenience that one of the switches fails without the user's knowledge and the energization is not properly opened / closed when necessary.

[Modification example]
The above-described embodiments may be variously modified within the scope of the technical idea of the present invention. Examples of these modifications are shown below. In addition, these modified examples may be combined appropriately.

[Modification 1]
In the above-described embodiment, the functions of the detection device 11 and the instruction device 12 are realized by the processor performing data processing according to the program. Instead, at least one of the detection device 11 and the instruction device 12 may be configured as a so-called dedicated device that realizes the above-mentioned functions by hardware.

FIG. 4 is a block diagram showing a configuration example of an opening / closing system 1 including an instruction device 12 realized by hardware. In FIG. 4, the number of electric circuits R (i) included in the opening / closing system 1 is two (that is, n = 2), and the number of switches SW (i, j) included in each of the electric circuits R (i). Illustrates the case where there are two (that is, m = 2).

In the opening / closing system 1 according to the modification shown in FIG. 4, the indicator device 12 has a timer TM (i, j) corresponding to each of the plurality of switches SW (i, j). Each of the plurality of timers TM (i, j) gives an OFF instruction to the corresponding switch SW (i, j) when T1 elapses for a predetermined time after the last input of the OFF instruction signal is received from the detection device 11. Output a signal.

The detection device 11 has, for example, a switch SW (1,1), a switch SW (2,1), a switch SW (1,2), and a switch SW (2,2) every time T2 elapses for a predetermined time. , Switch SW (1,1), ..., Select one switch from each of the four switches, and turn it off to the selected switch and the timer corresponding to the switch. After outputting the instruction signal, the ON instruction signal is output.

It should be noted that between the predetermined time T1 for the timer to output the OFF instruction signal to the switch and the predetermined time T2 which is the interval at which the detection device 11 selects the switch, T1 = T2 × 4 + α (however, however). α has a relationship (allowable operation delay time when the detection device 11 is operating normally). That is, the timer TM (i, j) cannot receive the OFF instruction signal by the time when the next OFF instruction signal should be received after the last OFF instruction signal is received when the detection device 11 is operating normally. If so, an OFF instruction signal is output to the corresponding switch SW (i, j).

When the timer TM (i, j) receives the OFF instruction signal before the elapse of the predetermined time T2, the timer TM (i, j) resets the clock and starts a new clock. Therefore, as long as the detection device 11 is operating normally and the OFF instruction signal is received before the elapse of the predetermined time T2, the timer does not output the OFF instruction signal to the corresponding switch SW (i, j).

According to the opening / closing system 1 according to this modification, when the detection device 11 fails and the OFF instruction signal is not output to each of the switches SW (i, j) at predetermined time intervals, the switches SW (p, q) ), The timer TM (i, j) corresponding to each of) detects the failure of the detection device 11 in sequence, and the switch SW (i, j) is opened. As a result, the electric circuit between the input side device 2 and the output side device 3 is cut off.

[Modification 2]
In the above-described embodiment, the detection device 11 selects the switch to be inspected one by one from the plurality of switches SW (i, j). That is, two or more switches do not open and close at the same time according to the instruction of the detection device 11. Instead of this, a configuration may be adopted in which a plurality of switches simultaneously open and close.

5A and 5B (hereinafter, these figures are collectively referred to as FIG. 5) are flow charts of an example of the detection process performed by the detection device 11 of the opening / closing system 1 according to this modification. The detection device 11 instructs all switches SW (i, j) to close (step A01). Subsequently, the detection device 11 sets the counter q to 1 (step C01).

Subsequently, the detection device 11 instructs each of the switches SW (i, q) (however, i = 2, 3, ..., N) to open (step C02). That is, the detection device 11 simultaneously instructs all the qth switches of the electric circuit R (i) except the electric circuit R (1) continuation to be opened.

Subsequently, the detection device 11 is based on each of the feedback signals FB (i) (however, i = 2, 3, ..., N), and the switch SW (i, q) (however, i = 2, 3). , ..., N) is detected (step C03).

When any failure of the switch SW (i, q) is detected in the detection of step C03 (step C03: YES), the detection device 11 detects all the switches SW (i, j) (where i =. 1, 2, ..., N) are instructed to open (step B01), and the detection result is output (step B02).

If no failure of the switch SW (i, q) is detected in the detection of step C03 (step C03: NO), the detection device 11 is the switch SW (i, q) (however, i = 2, 3, ..., Instruct each of n) to close (step C04). That is, the detection device 11 simultaneously instructs all the qth switches of the electric circuit R (i) except the electric circuit R (1) continuation which was instructed to be opened in step C02 to be closed.

Subsequently, the detection device 11 is based on each of the feedback signals FB (i) (however, i = 2, 3, ..., N), and the switch SW (i, q) (however, i = 2, 3). , ..., N) is detected (step C05).

When any failure of the switch SW (i, q) is detected in the detection of step C05 (step C05: YES), the detection device 11 detects all the switches SW (i, j) (where i =. 1, 2, ..., N) are instructed to open (step B01), and the detection result is output (step B02).

If any failure of the switch SW (i, q) is not detected in the detection of step C05 (step C05: NO), the detection device 11 determines whether the counter q is m (step C06). When the counter q is not m (step C06: NO), the detection device 11 adds 1 to q (step C07), and repeats the processes after step C02. As a result, among the switches SW (i, j) of each of the electric circuits R (2) to R (n), the first switch, the second switch, ... Are sequentially inspected. It is selected as the target switch, and multiple selected switches are inspected at the same time.

In the determination of step C06, when the counter q is m (step C06: YES), the detection device 11 sets q to 1 (step C08), and instructs the switch SW (1, q) to open (step C06). C09). Subsequently, the detection device 11 detects a failure (short circuit failure) of the switch SW (1, q) based on the feedback signal FB (1) (step C10).

When a failure of the switch SW (1, q) is detected in the detection of step C10 (step C10: YES), the detection device 11 uses all the switches SW (i, j) (however, i = 1, 2). , ..., N) is instructed to open (step B01), and the detection result is output (step B02).

When the failure of the switch SW (1, q) is not detected in the detection of step C10 (step C10: NO), the detection device 11 instructs the switch SW (1, q) to close (step C11). Subsequently, the detection device 11 detects a failure (open failure) of the switch SW (1, q) based on the feedback signal FB (1) (step C12).

When a failure of the switch SW (1, q) is detected in the detection of step C12 (step C12: YES), the detection device 11 uses all the switches SW (i, j) (however, i = 1, 2). , ..., N) is instructed to open (step B01), and the detection result is output (step B02).

When the failure of the switch SW (1, q) is not detected in the detection of step C12 (step C12: NO), the detection device 11 determines whether the counter q is m (step C13). When the counter q is not m (step C13: NO), the detection device 11 adds 1 to q (step C14), and repeats the processes after step C09. As a result, the first switch, the second switch, ... Of the electric circuit R (1) are sequentially selected as the switches to be inspected, and the selected switches are inspected.

In the determination of step C13, when the counter q is m (step C13: YES), the detection device 11 repeats the processes after step C01.

According to the opening / closing system 1 according to this modification, as compared with the case of the opening / closing system 1 according to the above-described embodiment, the failure inspection of a plurality of switches is performed at once, so that it is necessary to check the failures of all the switches. Time is reduced.

When following the flow chart of FIG. 5, the switch of the electric circuit R (2) to R (n) is selected as the switch to be inspected in the process of steps C01 to C07, and the switch of the electric circuit R (2) in the process of steps C08 to C14. The switch of 1) is selected as the switch to be inspected. The method of selecting an electric circuit having a switch selected as an inspection target in the processes of steps C01 to C07 and an electric circuit having a switch selected as an inspection target in the processes of steps C08 to C14 is not limited to this. For example, in the processing of steps C01 to C07, the switch of the electric circuit R (1) to the electric circuit R (k) (where k is an arbitrary natural number where 1 <k <n) is selected as the switch to be inspected, and the step. In the processing of C08 to C14, the switch of the electric circuit R (k + 1) to the electric circuit R (n) may be selected as the switch to be inspected.

[Modification 3]
In the above-described embodiment, when the detection device 11 detects a failure of any of the switches, the detection device 11 instructs all the switches to open. When a failure of any of the switches is detected, if an opening instruction is given to at least one switch of each of the plurality of electric circuits, between the input side device 2 and the output side device 3. The energization is cut off. Therefore, when the detection device 11 detects a failure of any of the switches, a configuration may be adopted in which at least one switch of the electric circuit is instructed to open for each of the plurality of electric circuits. For example, when the detection device 11 detects a failure of any of the switches, one switch among the plurality of switches of the electric circuit (however, a switch for which a short-circuit failure is detected) is used for each of the plurality of electric circuits. May be instructed to open to).

[Modification example 4]
When the number of electric circuits is 3 or more, even after the switching system 1 detects the failure of any of the switches, the detection process (see FIG. 3) is performed in a plurality of electric circuits in which the failure of the switch is not detected. A configuration that runs continuously may be adopted.

In this modification, when the detection device 11 detects a failure of any of the switches, the detection device 11 instructs all the switches in the same electric circuit as the switch to open. After that, the detection process is executed in a plurality of electric circuits excluding the electric circuit having the switch in which the failure is detected.

[Other variants]
(1) In the above-described embodiment, the number of switches included in each of the plurality of electric circuits is the same. The number of switches that each of the plurality of electric circuits has may be different.

(2) In the above-described embodiment, the detection device 11 sequentially selects the switches to be inspected by giving priority to the vertical direction in the arrangement of the switches shown in FIG. That is, the detection device 11 is said to be the first switch of the first electric circuit, the first switch of the second electric circuit, ..., The first switch of the nth electric circuit. After selecting the switches to be inspected in order, the second switch of the first electric circuit, the second switch of the second electric circuit, ..., the second of the nth electric circuit. Select the switch to be inspected in the order of the second switch.

The order in which the detection device 11 selects the switch to be inspected is not limited to this. For example, a configuration may be adopted in which the detection device 11 sequentially selects the switches to be inspected in order of priority in the lateral direction in the arrangement of the switches shown in FIG. In this case, the detection device 11 is the first switch of the first electric circuit, the second switch of the first electric circuit, ..., The mth switch of the first electric circuit, After selecting the switch to be inspected in this order, the first switch of the second electric circuit, the second switch of the second electric circuit, ..., The second of the second electric circuit Select the switch to be inspected in the order of the m-th switch.

(3) In the above-described embodiment, the detection device 11 and the instruction device 12 notify the failure detection result by display. The method in which the detection device 11 and the instruction device 12 notify the failure detection result is not limited to the display, and the failure detection result may be notified by an alarm sound, a voice message, or the like.

(4) In the above-described embodiment, the failure detection result by the detection device 11 and the instruction device 12 is output to the user. The output destination of the failure detection result by the detection device 11 and the instruction device 12 is not limited to the user. For example, the opening / closing system 1 is provided with an output unit that outputs data to an external device, and the output unit outputs data indicating a failure detection result by the detection device 11 or the instruction device 12 to the external device. You may. For example, the output unit included in the opening / closing system 1 may transmit data indicating a failure detection result by the detection device 11 or the instruction device 12 to a remote device via a wireless or wired communication network.

(5) In the above-described embodiment, when the detection device 11 detects a failure of any of the switches, it instructs all the switches to open. Further, when the instruction device 12 detects a failure of the detection device 11, the instruction device 12 instructs all the switches to open. The processing performed when the detection device 11 and the instruction device 12 detect a failure is not limited to this. For example, only the notification of the failure detection result may be given, and the opening instruction to the switch may not be given.

1 ... Opening / closing system, 2 ... Input side device, 3 ... Output side device, 11 ... Detection device, 12 ... Instruction device, 111 ... Calculation unit, 112 ... Storage unit, 113 ... Input / output IF unit, 114 ... UI unit, 121 ... Calculation unit, 122 ... Storage unit, 123 ... Input / output IF unit, 124 ... Display unit

Claims (4)

While maintaining the energization of one or more of the plurality of electric circuits connected in parallel each having a switch, the switch of the other electric circuit is instructed to open / close, and the switch of the switch is based on the energized state of the other electric circuit. When a failure is detected and a switch failure is detected, a detection device that instructs each switch of the plurality of electric circuits to open, and a detection device.
An opening / closing system including an instruction device that inputs a predetermined signal output from the detection device at a predetermined time interval and instructs each switch of the plurality of electric circuits to open when the predetermined signal cannot be received. .. While maintaining energization of one or more electric circuits of a plurality of connected electric circuits, each having a plurality of switches, instructing one or more switches of each of the other electric circuits to open / close, and energizing the other electric circuit. A detector that detects switch failures based on the condition, and
A predetermined signal output from the detection device at a predetermined time interval is input, and when the predetermined signal cannot be received, an instruction device for instructing one or more switches of each of the plurality of electric circuits to open is provided. Opening and closing system equipped. The switching system according to claim 2, wherein when a failure of any of the switches is detected, one or more switches of each of the plurality of electric circuits are instructed to open. The second aspect of the present invention, wherein after detecting the failure of any of the switches, the opening / closing instruction and the failure detection are performed in a plurality of electric circuits other than the electric circuit having the switch in which the failure is detected. Opening and closing system.

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