JPH01268300A - Remote control device - Google Patents

Abstract

PURPOSE:To improve safety and operability by prohibiting remote control to a control object equipment with a central processing unit and directly executing the control at hand. CONSTITUTION:When a remote control prohibiting switch IS is turned on, an input signal to an input port 24 of a CPU12 is changed from a high level to a low level. When the output signal of an output port 12 in the CPU12 is changed to the low level, a relay coil 14C of a control relay 14 is excited and a normal opening contact 14a is closed. Then, since a relay coil 22C of a relay 22 is excited, a normal opening contact 22a of the relay 22 is closed and a normal closing contact 22b is opened. In such a condition, a closing circuit, which is formed from a socket 21 through the route of a load 24, a first normal closing contact b1 of a hand switch S1, the normal closing contact 22b of the relay 22 and the socket 21, is released by the opening of the normal closing contact 22b in the relay 22. Then, the load 24 goes to an unoperating condition. Thus, the safety and operability can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention is applicable to various household appliances, etc.
The present invention also relates to a device for remotely controlling equipment to be controlled such as various devices in a factory using a central controller.

[Conventional technology]

In recent years, devices called home automation and the like that centrally control various electrical appliances in the home have been put into practical use. A control device using a microcomputer device is used as the control center of such a device.

FIG. 1 is a block diagram showing a conventional general configuration of the above-mentioned device.

□ In the figure, A is the central control unit, R1, R2', 'R3
are respectively control target devices remotely controlled by central control device A, and B, C, and D are interfaces as terminal control devices that respectively control control target devices R1, R2, and R3 in response to instructions from central control device A. The unit l is a signal transmission line connecting the central controller A and each interface unit s, c, and D.

In addition, a switch Sb attached to the central control device A,
Sc and Sd are respectively interface units B.

It is a remote control switch for controlling the controlled devices ill, R2, and R3 via C and D, and further includes switches Sl and S2' attached to each controlled device R1, R2, and R3.
, S3 are hand switches for manually operating the respective controlled devices R1, R2, and R3.

In such a remote control device, each controlled device R1, R
2 and R3, when the remote control switches Sb, Sc, and Sd are turned on, a control command to which a destination address for each controlled device R1, R2, and R3 is added is sent to the transmission line l. Each ink face unit B.

At C and D, the destination address of the control command received via the transmission line 1 is checked against its own address, and if they match, the address is accepted and the respective controlled devices R1 and R2 are operated according to the command. Controls R3.

On the other hand, each controlled device R1, R2, R3 has a hand switch Sl, S2. S3 is provided. This is aimed at improving the bank amplifier and operability in the event that the central control unit A fails. This hand switch SL,
S2. Conventionally, the relationship between S3 and the central control device A is generally set to be a logical sum (OR) (Japanese Patent Laid-Open No. 58-66491, Japanese Patent Laid-Open No. 58-6 (1899)).
No. 4, etc.). That is, the remote control switch S of the central control device A
b, Sc, , Sd or hand switch Sl, S2. S3
Conventionally, it has been common for the corresponding controlled devices R1, R2, and R3 to operate if any one of them is turned on.

[Problem to be solved by the invention]

In the future, it is conceivable that such a remote control device will be developed into a system and have even more diverse functions. In such a case, with conventional devices, the device to be controlled may be remotely controlled, contrary to manual control, which may cause various problems in terms of safety and operability. In other words, even if a person near the controlled device operates the local switch, remote control takes priority and the local switch is disabled, or conversely, remote control may be disabled regardless of the will of the person near the controlled device. Control may cause the controlled equipment to operate and cause a dangerous situation.

The present invention was made in view of these circumstances, and
The purpose of the present invention is to provide a remote control device that is capable of prohibiting remote control of controlled equipment and has improved safety and operability.

Furthermore, since various inconveniences may occur if one forgets that remote control is prohibited, the object of the present invention is to provide a remote control device that automatically cancels the prohibited state of remote control according to predetermined conditions.

Furthermore, the object of the present invention is to provide a remote control device that can prevent signal transmission line failures, etc. by giving a signal to the central control device indicating this when remote control is prohibited. .

[Measures to solve problems]

In the remote control device of the present invention, a switch means for prohibiting remote control is provided on the side of the device to be controlled, in addition to the hand switch that controls each device. Furthermore, if the control device attempts to perform control while the above-mentioned switch means is turned on and remote control is prohibited, a warning is issued and remote control is prohibited again after a predetermined period of time has elapsed. If the switch means is not operated, it automatically returns to a state in which remote control is possible. Furthermore, means is provided for notifying the central control unit that remote control is prohibited.

[Effect]

In the remote control device of the present invention, when the switch means for prohibiting remote control is turned on, remote control by the central control device is prohibited, so safety and operability are improved. Further, the remote control prohibited state is automatically canceled according to predetermined conditions, and the remote control prohibited state is further notified to the central control device.

[Embodiments of the invention]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below based on drawings showing embodiments thereof.

The remote control device of the present invention is basically applicable to a remote control device similar to that shown in FIG. 1 described above.

That is, in the figure, A is a central control device, R1, R2, and R3 are devices to be controlled by central control device A, and B, C, and D are devices to be controlled by receiving instructions from central control device A. The interface unit 1 is a terminal control device that controls R1, R2, and R3, and l is a signal transmission line that connects the central control device A and each interface unit B, C, and D.

In addition, the switch/7-chi Sb attached to the central control device A
, Sc, and Sd are interface units B, respectively.

It is a remote control switch for controlling the controlled devices R1, R2, R3 via the controlled devices R1, R2, R3, and the switches Sl, S2 . S
Reference numeral 3 denotes a hand switch for operating each of the controlled devices R1, R2, and R3 at hand.

FIG. 2 is a circuit diagram showing the configuration of one of the devices to be controlled, R1, and its interface unit B, and the same applies to the other devices R2, R3 and interface units C, D. .

Interface unit B includes a transmitting/receiving circuit 11°CPU
12. Self address switch 13. Control relay 143 speaker 16. It is composed of the amplifier 15, remote control inhibit switch IS, and the like.

The transmitter/receiver circuit 11 receives control commands and transmits monitor signals or response signals to/from the transmission line l.

The CPU 12 is the control center of the interface unit B, and a signal from the central controller A is input to the external interrupt terminal INT via the transmitting/receiving circuit 11, and the output port P1
1 outputs a signal to the central controller A via the transmitter/receiver circuit 11.

The self-address switch 13 generates a self-address given to identify the controlled device R1 corresponding to the interface B, and outputs it to the port po of the CP1, 12.

In the control relay 14, when the control signal output from the output port P12 of the CPU 12 is at a high level, the relay coil 14C is generated to circuit the normally open contact 14a, and when the control signal is at a low level, the relay coil 14C is activated.
is excited to close the normally open contact 14a.

When a high level output is output from the output port P25 of the transmitting/receiving circuit 11, the speaker 16 generates an alarm sound by amplifying this signal and applying it to the amplifier 15.

When the remote control inhibit switch Is is turned on, the input signal to the input capacitor 124 of the CPU 12 is changed from /% high level to low level.

The controlled device R1 is an outlet 21. connected to a commercial power source. Relay 22. Current detection circuit 23. It is composed of a load 24, a hand switch S1, etc.

The outlet 21 is connected to the control relay 14 of the interface unit B. It is connected to the relay 22 and load 24 of the controlled device R1. Specifically, one line of the outlet 21 connects the normally open contact 14a of the control relay 14 and the relay 2.
It is connected to the other line via the second relay coil 22C. Further, one line of the outlet 21 is also connected to one end of each of the normally open contact 22a and the normally closed contact 22b of the relay 22. The other line of the outlet 21 is connected to one end of each of the first normally open contact a1 and the first normally closed contact b1 of the hand switch S1 via a load 24 (a light bulb in this embodiment).

The other end of the normally open contact 22a of the relay 22 is the hand switch S1
The other end of the normally closed contact 22b of the relay 22 is connected to the first normally closed contact b1 of the hand switch S1.
are connected to the other end of each.

Also, one end of the second normally open contact a2 of the hand switch S1 is connected to the input capo-1-P21 of the CPt112, and one end of the second normally closed contact b2 is connected to the input capo-1-P21 of the CPt112 (R22).
connected to the second normally open contact 2a and the second normally closed contact 2
The other end of b is grounded.

Note that the current detection circuit 23 detects the current flowing through the load 24 and provides the result to the input capo-1-P23 of the CPU 12 as a load status signal.

Therefore, in the state shown in FIG. 2, that is, when the normally open contact 14a of the control relay 14 is opened, the normally open contact of the relay 22 is opened and the normally open contact is closed, and the first normally open contact a1 of the hand switch S1 is closed. is open and the first normally closed contact b1 is closed, the path from the outlet 21 to the first normally closed contact bl of the load 241 hand switch S1, the normally closed contact 22b of the relay 22, and the outlet 21 Since a closed circuit is formed, the load 24 operates.

In this case, the second normally closed contact b2 of the hand switch S1 is closed, the second normally open contact a2 is open, and C
A low level signal is input to the input port P22 of the PU12.
A high level signal is input to each of P21, and the operating state of the load 24 is detected by the current detection circuit 23, and a load state signal is given to the input capacitor P23 of the CPU 12. CPt112 is such an input port p2
1. p22. From input signal to p23 to hand switch S1
The relationship between the state of the load 24 and the operating state of the load 24 is grasped.

On the other hand, when the output signal of the output port P12 of the CPU 12 changes to a low level from the state shown in FIG.
4a is closed, thereby energizing the relay coil 22C of the relay 22, so that the normally open contact 22a of the relay 22
is closed, and the normally closed contact 22b is opened. In such a state, the first normally closed contact bl of the load 241 hand switch S1 and the relay 22 are connected from the above-mentioned outlet 21.
The closed circuit formed by the normally closed contact 22b of the relay 22 and the outlet 21 is opened by opening the normally closed contact 22b of the relay 22. Therefore, the load 24 becomes inactive. Conversely, if the output signal of the output port P12 of the CPU 12 changes to high level from this state, the normally closed contact 22 of the relay 22
b is closed again and the load 24 is put into operation.

Further, in the state shown in FIG. 2, when the hand switch S1 is switched, the normally closed contact b1 of the hand switch S1 is opened, so that the load 24 is placed in a non-operating state.

Conversely, when the normally open contact 14a of the control relay 14 is closed from the state shown in FIG. When switched, the normally open contact a1 is closed and the normally open contact 22a of the relay 22 is also closed, so the load 24 is in the operating state.

That is, the operating/non-operating state of the load 24 can be controlled either by changing the output signal 4 of the output port P12 of the CPU 12 or by switching the hand switch S1. The operating state can be recognized by the load state signal input from the current detection circuit 23 to the input port P23 of the CPU 12.

Below, regarding the control operation of the remote control device of the present invention, CP
The control procedure of U12 will be described in detail with reference to a flowchart showing the control procedure.

FIG. 3 shows the initial setting program. That is, first, when the main power switch (not shown) of the controlled device R1 is turned on, the internal buffer, pointer, etc. of the CPU 12 are initialized, and the internal buffer, pointer, etc. of the CPU 12 are initialized, and the PI3 (load control output port)
(initialization of each output port including the self-address switch 13, memory of the self-address (SA) by reading data from the self-address switch 13, baud to which the signal from the hand switch S1 is input)
1'21. After storing the initial state of P22 and storing the initial state of P23, etc., the timer clock is started as an external interrupt enabled state (INTE'N), and a standby state is entered.
4 is a flowchart showing the control procedure of the CPU 12 when a control command from the central control device A is received.

Control commands from the central controller A are sent to the external interrupt terminal I of the CPU 12 via the transmission line I and the transmitter/receiver circuit 11.
Input to NT. When the CPU 12 is interrupted by the first start bit of the control command input from the central controller A to this external interrupt terminal TNT, the CPU
12 first receives a specified bucket, and determines whether it is addressed to itself by comparing it with the stored own address (SA).

If the addresses match, the CPU 12 next checks the inhibition flag INF to confirm whether remote control is possible. This prohibition flag INF is input to CPt112 when the remote control prohibition switch S is turned on.
It is set to "1" when the input signal to P24 is low level.

Therefore, if the prohibition flag INF is "0", it means that remote control is possible, so the CPU
12 executes control of the controlled device R1 in accordance with control commands given from the central control device A. in particular,
When the load 24 is in the operating state, if a command is issued from the central controller A to put the load 24 in the non-operating state, the CPt 112 changes the state of the output signal from the output capo-1-P12. (If it was “1” up until then, it will be changed to “0”; if it was “0” up until then, it will be changed to “1m”)
. Further, if the command from the central control bag WA is the same as the state of the load 24 at that time, the CPU 12 ignores the command.

On the other hand, if the prohibition flag INF is "1", it means that remote control is prohibited, so the CPU 12 ignores the control command received from the control device A. However, in this case, the remote control prohibition switch Is is The on operation was due to a previous operation, and there is a possibility that the reset operation was forgotten.

Therefore, in this case, the CPU 12 outputs a high level signal from the output port P25, so that the speaker 1
6 to sound an alarm. At the same time, the CPU 12 sends a reject signal to the central control device A to inform the control device A that remote control is prohibited. This allows the central controller A to:
It becomes possible to determine whether this is due to the operation of the remote control prohibition switch Is or a failure such as a disconnection of the transmission line I.

Furthermore, the CPU 12 sets the reject flag RJF to "1" and also sets the interval time value n to the interval timer (IT).

Note that the reject flag RJF is set to "1" when remote control is attempted by central controller A in a state where remote control is prohibited.

FIG. 5 is a flowchart showing control regarding the operation of the remote control inhibition switch Is.

This control is a timer interrupt process, and is executed every time a predetermined time elapses in the standby state of the flowchart in FIG.

Now, when a timer interrupt occurs, the CPt 112 performs this interrupt processing. That is, first, the remote control prohibition switch I
It is checked whether S has been switched from off to on.

Specifically, if the input signal to the input port P24 changes from high level to low level, the CPU 12 determines that the remote control inhibition switch Is has been operated from off to on.

In either case, the CPU 112 then flags the reject flag RJF'cWa. If this reject flag is "l" when the remote control prohibition switch lS is operated from off to on, the remote control prohibition state (prohibition flag INF
"1"), a remote control signal was received from the central controller A, and after an alarm was generated by the speaker 16 in response, the remote control prohibition switch IS was turned on again. There is. Therefore, in this case, the remote control prohibited state is maintained, and the process proceeds to the step of checking the terminal status signal input to the human capo P23.

On the other hand, if the reject flag RJF-“Om” indicates that the remote control prohibition switch IS has been turned on from the normal state (not the remote control prohibition state) and the remote control prohibition state has been instructed, the prohibition flag INF is “1”
After the terminal is sent, processing proceeds to the step of examining the terminal status signal.

If the remote control prohibition switch ■S is not operated from OFF to ON, if the reject flag IIJI' is "1", the interval timer (IT) is activated when the remote control signal from the central controller A is received. A set value n is set, and this value is decremented by "1" for each interrupt processing routine shown in the flowchart shown in FIG. If the remote control prohibition switch S is not turned on before the predetermined time corresponding to the set value n has elapsed, the prohibition flag INF is reset to "θ". This is a measure to prepare for the possibility that the user forgets to release the remote control prohibition state by turning on the remote control prohibition switch IS, or for an unattended state.

Thereafter, the CPU 12 checks the terminal status signal, and if there is a change in it, transmits the monitor signal to the central controller A via the transmission line l.

In the above embodiment, signal transmission between the central control unit and the interface unit is performed by wire, but it goes without saying that wireless communication, optical communication, etc. may also be used.

〔Effect of the invention〕

As described above, according to the remote control device of the present invention, it is possible to prohibit remote control of the device to be controlled by the central control device and directly control the device at hand, thereby improving safety and operability. In addition, if you forget that remote control is prohibited, the prohibited state of remote control is automatically canceled according to predetermined conditions, and furthermore, when the central controller issues a remote control signal, the remote control is automatically disabled. If the control is prohibited, this is communicated to the central control device, so that the central control device can determine the reason why remote control is not possible, making it easier to discover failures and the like.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of a general remote control device, FIG. 2 is a circuit diagram showing the configuration of the interface unit and controlled equipment of the remote control device of the present invention, and FIGS. FIG. 5 is a flowchart showing the control procedure. A...Central control unit B, C, D...Interface unit R1, R2, R3-...Controlled equipment
Sl, s2. s3...Hand switch 1s...
Remote control prohibition switch 12...CPU 16...
Speaker patent Applicant: Sanyo Electric Co., Ltd. Agent Patent attorney: Noboru Kono

Claims (1)

[Claims] 1. A terminal control device for controlling a device to be controlled, which has a hand-operated means for controlling itself, and a terminal control device for controlling the device to be controlled remotely by giving a control signal to the terminal control device. A remote control device comprising a central control device for controlling the device, wherein the terminal control device includes a switch means for prohibiting remote control of the device to be controlled by the central control device. . 2. Alarm means for issuing a predetermined alarm when a control signal is given from the central control device while remote control of the controlled device is prohibited by operation of the switch means; 2. The remote control device according to claim 1, wherein the terminal control device includes means for canceling the prohibition state of remote control if the switch means is not operated again for a predetermined period of time after the occurrence of the alarm. 3. If a control signal is given from the central control device while remote control of the controlled device is prohibited by operation of the switch means, a signal indicating that remote control is prohibited is sent to the control device. The remote control device according to claim 1, wherein the terminal control device includes means for transmitting information to a central control device.