JP7486309B2 - Remote control transmitter, opening/closing control system, and opening/closing control method - Google Patents

Description

The present invention relates to a remote control transmitter, an opening/closing control system, and an opening/closing control method for controlling an opening/closing device installed in an opening such as a window or an entrance of a structural body including a house, a building, a factory, a warehouse, etc., and in particular to a remote control transmitter, an opening/closing control system, and an opening/closing control method configured to wirelessly transmit a control signal related to the operation of the opening/closing device.

Opening and closing devices such as shutters and doors installed at the openings of structural members including buildings, factories, warehouses, etc. often use electric shutters and electric doors that perform the opening and closing operations electrically. In these opening and closing devices that perform the opening and closing operations electrically, a specified opening and closing operation is performed in response to a control signal from a wired or wireless three-point or one-point dedicated switch equipped with three types of switches (operators) for opening and closing. In the case of a portable wireless dedicated switch, multiple wireless dedicated switches can be registered for opening and closing devices that need to be operated by multiple people, such as a garage shutter device.

Patent Document 1 also proposes that when an operator means, which is a dedicated switch, is connected to a child unit control means and a parent unit control means, respectively, the child unit control means and parent unit control means read and store the transmitter ID (identification information unique to the operator means) assigned to the operator means, and establish (pair) a wireless communication line connection between the parent unit control means and the child unit control means using the stored transmitter ID as a key for establishing a communication line. The invention described in Patent Document 1 has the excellent effect of eliminating the need for work space for system construction by using the identification information (transmitter ID) of a small, portable operator means as a key for system construction, and easily setting the child unit control means appropriately to a parent unit control means such as a centralized communication device during construction at the installation site.

JP 2016-220015 A

Many opening and closing body devices have been proposed that are configured to control the opening and closing operations using a remote control transmitting device with a built-in wireless transmitter. For example, wireless remote control transmitting devices are widely used in garage shutter devices because they are convenient and allow users to open and close the shutter without getting out of their vehicles.
In the case of such a wireless remote control transmitter, a receiving antenna is attached to a wall surface near the garage shutter device or in a storage box thereof, and the radio waves from the remote control transmitter are received by this remote control transceiver. Also, in the opening and closing control system described in Patent Document 1, radio waves from the master control means are received by a slave control means (remote control transceiver) provided in the garage shutter device.

In this remote control transceiver, the receiving section demodulates the electrical signal (e.g., ASK modulated signal or FSK modulated signal) received and converted by the receiving antenna, and provides the original transmission signal (demodulated signal) transmitted by the remote control transmitting device or the transmitter of the master control means to the reception control section. The reception control section of the remote control transceiver decodes the original transmission signal, and authenticates whether the remote control transmitting device and the master control means that are the senders of the original transmission signal are capable of issuing operation instructions to the remote control transceiver, based on the identification information (transmitter ID) inserted in the signal. Then, based on the instructions inserted in the original transmission signal, the shutter device is driven based on a control signal that instructs the shutter device to open, close, or stop. This allows the shutter to be opened, closed, or stopped as intended by the user.

When transmitting signals from the remote control transmitter and the parent unit control means to the remote control transceiver wirelessly in this way, it is necessary to register the transmitter ID of the remote control transmitter in advance as identification information in the remote control transceiver. Based on this identification information (transmitter ID), the opening and closing device authenticates whether or not the remote control transmitter and the parent unit control means are capable of issuing operational instructions.

The remote control transmitter and parent unit control means always transmit the identification information (transmitter ID) of the corresponding remote control transmitter when transmitting a control signal, so if a remote control transmitter/receiver is prepared in addition to the remote control transmitter/receiver built into the opening/closing body device and receives the transmitted signal when the remote control transmitter and parent unit control means transmit a control signal, there is a risk that the control signal itself, including the identification information (transmitter ID) inserted in the transmitted signal, could be copied. In this way, if a control signal including the identification information is copied by another device, it can continue to be used.

Therefore, there is a risk that a third party who is completely unrelated to the owner of the opening/closing body device, remote control transmission device, and parent unit control means could use another remote control transceiver and transmitter to copy the control signal and control the opening operation of the opening/closing body device. One possible measure to prevent such control signal copying is to use a rolling code that changes the code in a specific pattern, but in this case, once an empty transmission is performed in another location, there is a risk that it will not be possible to operate the opening/closing body device when actually trying to do so, and it may be necessary to operate the remote control several times before it becomes operable, which could be time-consuming and laborious.

The present invention has been made in consideration of the above points, and aims to provide a remote control transmitter, an opening/closing control system, and an opening/closing control method that can prevent copying of a control signal when transmitting the control signal of an opening/closing device wirelessly.

A first feature of the remote control transmitting device of the present invention is that in a remote control transmitting device that wirelessly transmits a control signal regarding the operation of an opening/closing body means corresponding to the operation of an operator, together with unique identification information, to a receiver of the opening/closing body means, when transmitting the control signal, the current number n of operations of the operator is encoded in accordance with a predetermined rule, and the encoded random ID is transmitted together with the control signal.
In this system, when a control signal is transmitted in response to the operation of an operator on a remote control transmitting device, the current number of times the operator has been operated n is coded (encrypted) according to a predetermined rule, and this is transmitted as a random ID together with the control signal. The number of times the operator has been operated is incremented each time the operator is operated, so the value n is different each time it is transmitted. By coding (encrypting) this number of times n according to a predetermined rule and transmitting it, the receiver can authenticate whether the remote control transmitting device is genuine by comparing the previous number of times n-1 of operation with the decrypted value n.

A second feature of the remote control transmitting device of the present invention is that when the number of times n that the operator is operated is expressed as Y digits in an X-ary system (X and Y are even numbers), the values of two adjacent digits of the Y digits are each converted according to a second conversion map group of (Y/2) types selected from a first conversion map group consisting of a plurality of conversion maps, thereby creating the encoded random ID.
This relates to the rules by which the remote control transmitter encodes the number of operations n into a random ID. Since the number of operations n is generally expressed in decimal, this decimal is expressed as Y digits of an X-ary number. In this embodiment, the number of operations n is 528, and when expressed as a six-digit hexadecimal number, it becomes "000210h". The values of two adjacent digits of the Y digits are converted using (Y/2) types of conversion maps. The two adjacent digits of "000210h" are "00h", "02h", and "10h", so by converting these values using three types of conversion maps, the number of operations n can be converted into a random ID.

A third feature of the remote control transmitting device of the present invention is that the number of times n that the operator is operated is displayed as a six-digit hexadecimal number, and the values of the adjacent upper two digits, middle two digits and lower two digits of the six digits are respectively converted according to a second map group consisting of three types of conversion maps selected from a first map group consisting of 256 types of conversion maps, thereby creating the encoded random ID.
This is a specific example of the predetermined rule described in the second feature in accordance with the embodiment. The number of operations n is displayed in six hexadecimal digits. The upper two digits, the middle two digits, and the lower two digits of the six-digit display of the number of operations n are converted to hexadecimal values based on three types of second map groups selected from a first map group consisting of 256 types. By transmitting the converted six-digit hexadecimal random ID, the receiving side decodes the number of operations n from the random ID based on the second map group. Since the first map group is assigned to each remote control transmitter from among 256 types, the number of operations n cannot be decoded unless the three types of maps assigned to the remote control transmitter are identified. Even if the three types of maps are identified, the number of operations n takes a different value each time it is transmitted, so by decoding the number of operations n and comparing it with the previous number of operations n-1, it is possible to recognize whether the remote control transmitter is genuine or not, and it is possible to effectively prevent fraud such as copying of control signals.

A fourth feature of the remote control transmitting device of the present invention is that, in the remote control transmitting device described in the second or third feature, the conversion map is constructed by randomly assigning a converted numerical value to each element of a matrix in which rows represent values that one of the two adjacent digits can take, and columns represent values that the other digit can take.
This is a specific configuration of the conversion map used for encoding and decoding in accordance with the embodiment. The conversion map is composed of random numerical values assigned to each element of the matrix. At this time, the possible values of one digit of the two digits and the other digit are 16 values from "0h" to "Fh" in hexadecimal, and are expressed as a matrix of 16 rows x 16 columns (256 elements). When the number of operations n is converted into a random ID using these three types of conversion maps, approximately 16.77 million random IDs are created, making it possible to effectively prevent fraud such as copying of control signals.

A fifth feature of the remote control transmitting device of the present invention is that in the remote control transmitting device described in the second, third or fourth feature, the receiver stores the first map group, and the remote control transmitting device stores the second map group.
In this system, a large number of first conversion map groups are stored on the receiver side, and the remote control transmitter stores only a selected number of second conversion map groups from the first conversion map group. Even if the conversion map of the remote control transmitter is illegally copied, it is only a part of the first conversion map group, so that illegality can be effectively prevented. In addition, since a different number of operation times n is converted into a random ID and transmitted each time transmission is performed, illegality can be effectively prevented by comparing the number of previous transmission times n-1 on the receiver side.

A first feature of the opening/closing control system of the present invention is that in an opening/closing control system equipped with a transmitter that wirelessly transmits a control signal regarding the operation of an opening/closing body means in response to the operation of an operator, together with unique identification information, to a receiver of the opening/closing body means, the transmitter encodes the current number of times the operator has been operated n in accordance with a predetermined rule and transmits the encoded random ID together with the control signal, and the receiver decodes the number of times the operator has been operated n based on the received random ID.
This is an invention of an opening and closing control system corresponding to the first feature of the remote control transmitting device.

A second feature of the opening and closing control system of the present invention is that, in the opening and closing control system described in the first feature, the transmitter creates the encoded random ID by converting each of two adjacent digits of the Y digits of the number of times n the operator is operated, expressed as an X-ary notation (X and Y are even numbers), in accordance with a second map group consisting of (Y/2) types of conversion maps selected from a first map group consisting of a plurality of conversion maps, and the receiver decodes the number of times n the operator is operated using the second map group.
This is an invention of an opening and closing control system corresponding to the second feature of the remote control transmitter.

A third feature of the opening and closing control system of the present invention is that, in the opening and closing control system described in the second feature, the number of times n that the operator is operated is displayed as six hexadecimal digits, and the encoded random ID is created by converting the values of the adjacent upper two digits, middle two digits and lower two digits of the six digits according to a second map group consisting of three conversion maps selected from a first map group consisting of 256 types of conversion maps, and the receiver decodes the number of times n that the operator is operated using the second map group.
This is an invention of an opening and closing control system corresponding to the third feature of the remote control transmitter.

A fourth feature of the opening and closing control system of the present invention is that, in the opening and closing control system described in the second or third feature, the conversion map is constructed by randomly assigning a converted numerical value to each element of a matrix in which rows represent values that one of the two adjacent digits can take, and columns represent values that the other digit can take.
This is an invention of an opening and closing control system corresponding to the fourth feature of the remote control transmitter.

A fifth feature of the opening and closing control system of the present invention is that in the opening and closing control system described in the second, third or fourth feature, the receiver stores the first map set and the transmitter stores the second map set.
This is an invention of an opening and closing control system corresponding to the fifth characteristic of the remote control transmitter.

A first feature of the opening/closing control method of the present invention is that in this opening/closing control method, which controls the opening/closing operation of the opening/closing body means by wirelessly transmitting a control signal regarding the operation of the opening/closing body means in response to the operation of an operator together with unique identification information to the opening/closing body means, the current number of times the operator has been operated n is encoded in accordance with a predetermined rule, the encoded random ID is transmitted to the opening/closing body means together with the control signal, and the opening/closing body means, upon receiving the random ID, decodes the number of times the operator has been operated n based on the random ID.
This is an invention of a switching control method corresponding to the first feature of the switching control system.

A second feature of the opening/closing control method of the present invention is that in the opening/closing control method described in the first feature, when the number of times n the operator is operated is expressed as Y digits in an X-ary notation (X and Y are even numbers), the values of two adjacent digits of the Y digits are each converted according to a second map group consisting of (Y/2) types of conversion maps selected from a first map group consisting of a plurality of conversion maps, thereby creating the encoded random ID, and then decrypting the number of times n the operator is operated using the second map group.
This is an invention of a switching control method corresponding to the second feature of the switching control system.

A third feature of the opening and closing control method of the present invention is that in the opening and closing control method described in the second feature, the number of times n that the operator is operated is displayed as six hexadecimal digits, and the values of the adjacent upper two digits, middle two digits and lower two digits of the six digits are each converted according to a second map group consisting of three types of conversion maps selected from a first map group consisting of 256 types of conversion maps, thereby creating the encoded random ID, and the number of times n that the operator is operated is decoded using the second map group.
This is an invention of a switching control method corresponding to the third feature of the switching control system.

A fourth feature of the opening and closing control method of the present invention is that, in the opening and closing control method described in the second or third feature, the conversion map is constructed by randomly assigning a converted numerical value to each element of a matrix in which rows represent values that one of the two adjacent digits can take, and columns represent values that the other digit can take.
This is an invention of a switching control method corresponding to the fourth feature of the switching control system.

A fifth feature of the switching control method of the present invention is that, in the switching control method described in the second, third or fourth feature, the first map group is stored by the receiving side and the second map group is stored by the transmitting side.
This is an invention of a switching control method corresponding to the fifth feature of the switching control system.

The remote control transmission device, opening/closing control system, and opening/closing control method of the present invention have the advantage of being able to prevent duplication of a control signal when transmitting a control signal for an opening/closing device wirelessly.

1 is a diagram showing the appearance of a shutter device equipped with an opening/closing body device of the present invention. 2 is a partially perspective front view of the opening/closing body device of FIG. 1 . 1 is a diagram showing an outline of a control system for an opening/closing body device according to the present invention; FIG. 13 is a diagram showing an example of a data conversion map for generating a random ID. 4 is a flowchart illustrating an example of a remote control process executed by a remote control transmission device. FIG. 6 is a flow chart showing an example of processing executed by the shutter opening/closing control device based on each control signal transmitted from the remote control transmitting device by the remote control processing of FIG. 5 . FIG.

The following describes preferred embodiments of the remote control transmitter, opening/closing control system, and opening/closing control method according to the present invention with reference to the attached drawings. In this embodiment, the opening/closing body device controlled by the opening/closing control system is a shutter device that is controlled to open and close vertically, with the top being the opening direction and the bottom being the closing direction.

Figure 1 is a diagram showing the appearance of a shutter device equipped with an opening/closing body device of the present invention. Figure 2 is a partial perspective view of the opening/closing body device of Figure 1 viewed from the front. Figure 3 is a diagram showing an outline of a control system for the opening/closing body device of the present invention. A shutter device is normally installed in an opening of a structure such as a building or garage, and is basically composed of a shutter case 1, a shutter curtain 2, guide rails 3, 4, a remote control transmitter 5, and photoelectric sensors 6, 7.

The guide rails 3, 4 are provided on both ends of the opening of the building so as to contact both ends of the shutter curtain 2, and are made of metal members with guide grooves with a U-shaped cross section that span from the lintel to the floor. The shutter curtain 2 rises and falls along the guide grooves of the guide rails 3, 4 to open and close the opening. A winding shaft 11 is rotatably provided within the shutter case 1, and the shutter curtain 2 is wound and unwound around it. A motor 13 is also provided within the shutter case 1, and the rotational driving force of the motor 13 rotates the winding shaft 11, controlling the opening and closing of the shutter curtain 2.

As shown in FIG. 2, a winding shaft 11, a chain 12, a motor 13, a position detection device 14, and a shutter opening/closing control device 15 are provided within the shutter case 1. The winding shaft 11 is rotatably provided within the shutter case 1, and winds and unwinds the shutter curtain 2. The chain 12 connects a driving sprocket provided on the rotating shaft of the motor 13 to a driven sprocket provided on the rotating shaft of the winding shaft 11. Therefore, the rotational driving force of the motor 13 is transmitted to the winding shaft 11 side via the chain 12, and when the motor 13 rotates, the winding shaft 11 rotates via the chain 12, thereby controlling the opening and closing operation of the shutter curtain 2.

The motor 13 is provided with a position detector 14 for detecting its rotational position, i.e., the open/closed position and open/closed state of the shutter curtain 2. This position detector 14 is composed of a pulse-generating rotary encoder or the like. A pulse signal corresponding to the rotation of the motor 13 is output to the shutter opening/closing control device 15, so that the shutter opening/closing control device 15 calculates the rotational position of the motor 13, the position and operating state of the opening at the tip of the closing side of the shutter curtain 2, etc. based on the generation status of this pulse.

The shutter opening/closing control device 15 is configured as a microcomputer, and is supplied with power via a power line (not shown). The shutter opening/closing control device 15 receives control signals corresponding to the operating states of the operation switches on the remote control transmitter 5 via a remote control receiver, and controls the rotation of the motor 13 based on the control signals. The remote control receiver 21 is connected to the remote control transmitter 5 via a specified frequency band (e.g., 426 [MHz]), and is connected to each other via the transmitter ID and random ID unique to the remote control transmitter 5.

The remote control transmitter 5 has an open switch 5a for opening, a stop switch 5b for stopping, and a close switch 5c for closing, and outputs control signals (including a transmitter ID and a random ID) for each opening/closing operation corresponding to the operation state of each of the opening/closing switches 5a to 5c to the remote control receiver 21 of the shutter opening/closing control device 15. The remote control receiver 21 is configured to execute each opening/closing operation only if the transmitter ID included in the control signal has been registered and the random ID matches a specified ID. Note that a wired operation switch or the like may be used to send a control signal to the shutter opening/closing control device 15 to perform the opening/closing operation.

Since the transmitter ID is unique to the remote control transmission device 5, it is possible to determine whether or not it has been registered by registering it in advance in the remote control receiver 21. On the other hand, the random ID is a random ID that is generated each time the remote control transmission device 5 transmits a control signal. In other words, the random ID is an ID that is updated with each transmission operation of the remote control transmission device 5, and is not unique like the transmitter ID, but is an ID that changes according to specific conditions. The remote control receiver 21 has a function for generating an ID that is the same as the random ID generated by the remote control transmission device 5.

Photoelectric sensors 6 and 7 are obstacle detection devices used to check the passage of people, cars, etc., and the presence of objects, etc., and are provided at both the left and right ends of the lower side of the opening. In the figure, they are provided at a specified location either at the front or back of the opening, but they may be provided at both the front and back and/or the top of the opening. Photoelectric sensor 6 is composed of a rectangular column-shaped projector support member, and is paired with photoelectric sensor 7, which is composed of a receiver support member of the same shape, on the opposite side. These photoelectric sensors 6 and 7 are spaced apart by a distance equivalent to the longitudinal dimension of the seat plate of the shutter curtain 2 or the horizontal dimension of the opening.

The photoelectric sensor 6 supports a light projector 6a consisting of a light-emitting element that emits light such as infrared light. On the other hand, the photoelectric sensor 7 supports a light receiver 7a consisting of a light-receiving element that receives and senses light. The light projector 6a of the photoelectric sensor 6 and the light receiver 7a of the photoelectric sensor 7 are arranged facing each other and form an optical path 8 for an object-detecting light beam that runs along the seat plate at the lower position of the opening. When the photoelectric sensors 6 and 7 detect a person or object (car) within the optical path 8, the switching mechanism of the photoelectric sensor amplifiers 6b and 7b transmits the detection signal to the shutter opening/closing device control device 15. In FIG. 1, the optical path 8 shows the object detection area of the photoelectric sensors 6 and 7.

Figure 4 shows an example of a data conversion map for generating a random ID. In this embodiment, the number of times the transmitter is operated, n, is converted into a random ID using three types of data conversion maps M1 to M3 shown in Figure 4, and transmitted together with the transmitter ID and the open/close operation code. There are 256 types of data conversion maps M1 to M256, which are stored in the memory area of the remote control receiver 21. Any three types selected from the 256 types of data conversion maps stored in the remote control receiver 21 are stored in the remote control transmitter 5. In Figure 3, three types of data conversion maps M1 to M3 out of the 256 types are stored in the memory area of the remote control transmitter 5. The remote control receiver 21 stores which remote control transmitter stores which data conversion map.

Data conversion maps M1 to M3 convert the number of times the transmitter is operated, n, into a random ID consisting of 24 bits. In other words, since the number of times n is a decimal number, it is converted into a 6-digit hexadecimal number (HEX conversion). Data conversion map M1 converts the upper 8 bits (6th and 5th digits) of the 6-digit hexadecimal number, data conversion map M2 converts the middle 8 bits (4th and 3rd digits), and data conversion map M3 converts the lower 8 bits (2nd and 1st digits) into different 8 bits. Data conversion maps M1 to M3 are each configured by associating the 16 possible values (0h, 1h, 2h...Fh) of the upper 4 bits of the 8 bits with rows and the 16 possible values (0h, 1h, 2h...Fh) of the lower 4 bits with columns, and randomly assigning the converted numerical value to each component of each matrix.

For example, if the number of times the transmitter has been operated, n, is 528, converting "528" into a six-digit hexadecimal number results in "000210h". Data conversion map M1 converts the upper 8 bits (sixth and fifth digits) of "00h" into another 8-bit data, and has a map number of 203. In data conversion map M1 in Figure 4, the upper 4 bits (sixth digit) and the lower 4 bits (fifth digit) are both "0h", so the converted value is "35h".

Data conversion map M2 converts the middle 8 bits (fourth digit, third digit) "02h" into another 8-bit data, and has a map number of 25. In data conversion map M2 in Figure 4, the upper 4 bits (fourth digit) are "0h" and the lower 4 bits (third digit) are "2h", so the converted value is "32h".

Data conversion map M3 converts the lower 8 bits (second digit, first digit) of "10h" into another 8 bits, and has a map number of 242. In data conversion map M3 in FIG. 4, the upper 4 bits (second digit) are "1h" and the lower 4 bits (first digit) are "0h", so the converted value is "2Ah". Therefore, the hexadecimal value of "000210h", which indicates 528 operations, is converted into the random ID "35322Ah" and transmitted to the remote control receiver 21.

The remote control receiver 21 that receives this random ID obtains the number of operations n = 528 by decrypting the random ID into the number of operations n of the remote control transmitter 5 based on the data conversion map corresponding to map numbers 203, 25, and 242 stored in the remote control transmitter 5. The remote control receiver 21 stores the number of operations for the previous random ID, so it compares the number of operations n-1 with the current number of operations n, and if the current number of operations n is within 3 counts of the previous number of operations n-1, the remote control transmitter 5 recognizes it as a valid transmitter. On the other hand, if the number of operations n is a value smaller than the previous number of operations n-1 or is 4 counts or more, the remote control transmitter 5 assumes it is an unauthorized transmitter and does not execute any processing.

Figure 5 is a flow chart showing an example of remote control processing executed by the remote control transmitter. In Figure 5, when the open/close switches 5a to 5c of the remote control transmitter 5 are operated, a control signal related to each open/close operation corresponding to the operation state is transmitted to the remote control receiver 21 together with the random ID described above.

In step S51, it is determined whether or not the stop switch 5b has been operated. If the stop switch 5b has been operated (yes), the process proceeds to the next step S52, and if not (no), the process proceeds to step S53.
In step S52, the remote control transmitter 5 transmits to the remote control receiver 21 the regular identification information (transmitter ID) corresponding to the remote control transmitter 5, as well as a control signal relating to the stop operation corresponding to the stop switch 5b and the random ID.

In step S53, it is determined whether or not the open switch 5a has been operated. If the open switch 5a has been operated (yes), the process proceeds to the next step S54, and if the switch is other than the open switch 5a (no), the process proceeds to step S55.
In step S54, the remote control transmitter 5 transmits to the remote control receiver 21 the regular identification information (transmitter ID) corresponding to the remote control transmitter 5, as well as a control signal relating to an opening operation corresponding to the open switch 5a and the random ID.

In step S55, it is determined whether or not the close switch 5c has been operated. If the close switch 5c has been operated (yes), the process proceeds to the next step S56, and if the switch is other than the close switch 5c (no), the process returns.
In step S56, the remote control transmitter 5 transmits to the remote control receiver 21 the regular identification information (transmitter ID) corresponding to the remote control transmitter 5, as well as a control signal relating to the closing operation corresponding to the close switch 5c and the random ID.
In step S57, an increment process is executed to add 1 to the current number of operations n.

In this remote control process, the case where the random ID is transmitted together with the control signal for each operation of opening and closing has been described, but in the case of a control signal corresponding to the stop switch 5b or the close switch 5c, the random ID does not need to be transmitted. Even if a separate remote control receiver unrelated to the remote control receiver 21 is prepared and receives the transmission signal when the remote control transmitter 5 transmits a control signal, and the control signal and random ID including the identification information, i.e., the transmitter ID, inserted in the transmission signal can be copied, there is no problem because the remote control receiver 21 only executes the stop operation or close operation even if it receives a control signal for the stop operation or close operation. Also, when a control signal for the open operation is transmitted, if the remote control transmitter 5 is genuine, a random ID corresponding to the number of operations n is transmitted at the same time, so the remote control receiver 21 can determine whether it is genuine or unauthorized depending on whether the number of operations n is within 3 counts, so there is no problem even if the control signal for the open operation and the random ID are copied.

Figure 6 is a flow chart showing an example of the processing executed by the shutter opening/closing control device based on each control signal transmitted from the remote control transmission device by the remote control processing of Figure 5. That is, Figure 6 explains the processing executed by the shutter opening/closing control device 15 that receives control signals related to each opening/closing operation.

In step S60, it is determined whether the remote control transmission device 5 is a legitimate transmitter, that is, whether the value resulting from decoding the random ID corresponding to the received number of operations n (number of operations n) is within 3 counts of the previous number of operations n-1. If it is legitimate (yes), the processing from the next step S61 onwards is executed, and if it is not legitimate (no), the processing immediately returns.
In step S61, it is determined whether the signal received by the remote control receiver 21 is a stop signal corresponding to the operation of the stop switch 5b. If a stop signal has been received (yes), the process proceeds to the next step S62; if not (no), the process proceeds to step S64.
In step S62, it is determined whether the shutter curtain 2 is currently opening or closing (stopped), and if it is opening or closing (yes), the process proceeds to the next step S63, and if it is stopped (no), the process returns.
In step S63, since the shutter curtain is in the process of opening or closing, the operation is stopped and the process returns. Note that, here, the movement of the shutter curtain 2 during the opening operation is defined as the forward movement, and the movement during the closing operation is defined as the reverse movement.

In step S64, it is determined whether the signal received by the remote control receiver 21 is an open signal corresponding to the operation of the open switch 5a. If an open signal has been received (yes), the process proceeds to the next step S65; if not (no), the process proceeds to step S68.
In step S65, it is determined whether the current operation of the shutter curtain 2 is closing or not (opening or stopped), and if it is closing (yes), the process proceeds to the next step S66, and if it is opening or stopped (no), the process proceeds to step S67.

In step S66, since it is determined in step S65 that the closing operation is in progress, the closing operation is stopped, and after the closing operation is stopped, the opening operation is started, and the process returns.
In step S67, since it was determined in step S65 that the opening operation was in progress or was stopped, if the opening operation was in progress, the opening operation is continued as is, and if the opening operation was stopped, the opening operation is started and the process returns.

In step S68, it is determined whether the signal received by the remote control receiver 21 is a close signal corresponding to the operation of the close switch 5c. If it is a close signal (yes), the process proceeds to the next step S69, and if it is not a close signal (no), the process returns.
In step S69, it is determined whether or not a person or object (car) is detected by the photoelectric sensors 6, 7. If a person or object (car) is detected (yes), the process proceeds to step S65, and if not (no), the process proceeds to step S6A.

In step S6A, it is determined whether the current operation of the shutter curtain 2 is opening or not (closing or stopped), and if it is opening (yes), the process proceeds to step S6C, and if it is closing or stopped (no), the process proceeds to step S6B.
In step S6B, if the closing operation is in progress, the closing operation is continued as is, and if the closing operation is stopped, the closing operation is started and the process returns.
In step S6C, since the opening operation is in progress, the opening operation is stopped, and after the opening operation is stopped, the closing operation is started, and the process returns to step S60.

In the above embodiment, the number of operations n in a decimal number is displayed as six hexadecimal digits, and the values of the adjacent upper two digits, middle two digits, and lower two digits of these six digits are converted according to three map groups of map numbers 203, 25, and 242 selected from a map group of map numbers 0 to 255 consisting of 256 types of conversion maps to create an encoded random ID. However, these numbers are just an example, and generally, the following rules are expressed:
When the number of operations n is expressed as Y digits in an X-ary notation (X and Y are even numbers), the values of two adjacent digits of the Y digits are converted according to a second map group consisting of (Y/2) types of conversion maps selected from a first map group consisting of a plurality of conversion maps, thereby creating an encoded random ID.
In addition, the number of types of conversion maps is not limited to 256, and it is sufficient that the number of types of the first map group is greater than the number of types of the second map group. In addition, it is preferable that the second map group is configured to include maps of different types, but it may be configured to include the same maps.

In the above embodiment, a shutter curtain that is unrolled in a vertical lifting manner has been described as an example, but the present invention can be applied to shutter-like opening and closing members that are unrolled in a lateral or horizontal manner. In addition, the present invention can also be applied to opening and closing body devices such as shutter devices, overhead doors, window shutter devices, blind devices, roller screen devices, drapery devices, sliding door devices, movable partition devices, awning devices, and waterproof board devices.

1...shutter case 11...winding shaft 12...chain 13...motor 14...position detection device 15...shutter opening/closing device control device 2...shutter curtain 21...remote control receiver 3, 4...guide rail 5...remote control transmitter 5a...open switch 5b...stop switch 5c...close switch 6, 7...photoelectric sensor 6a...projector 7a...receiver 6b, 7b...photoelectric sensor amplifier 8...optical path M1 to M3...data conversion map

Claims (12)

A remote control transmitter that transmits a control signal related to the operation of an opening/closing body means in response to an operation of an operating element together with unique identification information to a receiver of the opening/closing body means by wireless communication,
a remote control transmitting device which, when transmitting the control signal, encodes adjacent two digits of the Y digits of the current number of times n the operator is operated in an X-ary system (X and Y are even numbers) by converting each of the adjacent two digits in accordance with (Y/2) types of second conversion map groups selected from a first conversion map group consisting of a plurality of conversion maps , and transmits the encoded random ID together with the control signal. 2. The remote control transmitting device according to claim 1 , wherein the number of times the operator is operated, n, is displayed as a six-digit hexadecimal number, and the encoded random ID is created by converting the adjacent upper two digits, middle two digits, and lower two digits of the six digits according to a second conversion map group consisting of three types of conversion maps selected from a first conversion map group consisting of 256 types of conversion maps. 3. The remote control transmitting device according to claim 1 ,
A remote control transmission device characterized in that the conversion map is constructed by randomly assigning a converted numerical value to each element of a matrix in which the rows represent the values that one of the two adjacent digits can take and the columns represent the values that the other digit can take. 4. The remote control transmitting device according to claim 1, 2 or 3 , wherein said receiver stores said first group of conversion maps, and said remote control transmitting device stores said second group of conversion maps. An opening/closing control system including a transmitter for wirelessly transmitting a control signal related to the operation of an opening/closing body means in response to an operation of an operating element together with unique identification information to a receiver of the opening/closing body means,
the transmitter encodes adjacent two digits of the Y-digit number of times n the operator is currently operated, expressed as an X-ary number (X and Y are even numbers), by converting each of the adjacent two digits in accordance with a second conversion map group consisting of (Y/2) types of conversion maps selected from a first conversion map group consisting of a plurality of conversion maps , and transmits the encoded random ID together with the control signal;
The opening and closing control system is characterized in that the receiver decodes the number of operations n based on the second conversion map group and the received random ID. In the opening/closing control system according to claim 5, the number of times n that the operator is operated is expressed as six hexadecimal digits, and the values of adjacent upper two digits, middle two digits, and lower two digits of the six digits are converted according to a second conversion map group consisting of three types of conversion maps selected from a first conversion map group consisting of 256 types of conversion maps, thereby generating the encoded random ID,
The opening and closing control system is characterized in that the receiver decodes the number of operations n by using the second conversion map group. In the opening and closing control system according to claim 5 or 6 ,
An opening and closing control system characterized in that the conversion map is constructed by randomly assigning converted numerical values to each element of a matrix in which the rows represent values that one of the two adjacent digits can take and the columns represent values that the other digit can take. 8. A switching control system according to claim 5, 6 or 7 , wherein the receiver stores the first set of conversion maps and the front transmitter stores the second set of conversion maps. 1. An opening/closing control method for controlling an opening/closing operation of an opening/closing body means by wirelessly transmitting a control signal related to the operation of the opening/closing body means in response to an operation of an operating element together with unique identification information to the opening/closing body means,
encoding adjacent two digits of the Y-digit number of times the operator is currently operated, n, when the number of times the operator is currently operated is expressed as Y digits in an X-ary notation (X and Y are even numbers), by converting each of the adjacent two digits in the Y-digit number according to a second conversion map group consisting of (Y/2) types of conversion maps selected from a first conversion map group consisting of a plurality of conversion maps , and transmitting the encoded random ID together with the control signal;
The opening/closing control method, characterized in that the opening/closing body means, upon receiving the random ID, decodes the number of operations n based on the second conversion map group and the random ID. 10. The opening/closing control method according to claim 9 , further comprising the steps of: displaying the number of times n that the operator has been operated using a six-digit hexadecimal number; converting adjacent values of the most significant two digits, the middle two digits, and the least significant two digits of the six digits according to a second conversion map group consisting of three types of conversion maps selected from a first conversion map group consisting of 256 types of conversion maps, thereby generating the encoded random ID;
A switching control method comprising: decoding the number of operations n using the second group of conversion maps. The opening and closing control method according to claim 9 or 10 ,
An opening and closing control method characterized in that the conversion map is constructed by randomly assigning a converted numerical value to each element of a matrix in which the rows represent values that one of the two adjacent digits can take and the columns represent values that the other digit can take. 12. A switching control method according to claim 9, 10 or 11 , characterized in that the first group of conversion maps is stored on the receiving side, and the second group of conversion maps is stored on the transmitting side.

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