WO2013125104A1 - 通信制御装置および通信制御方法 - Google Patents
通信制御装置および通信制御方法 Download PDFInfo
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- WO2013125104A1 WO2013125104A1 PCT/JP2012/078819 JP2012078819W WO2013125104A1 WO 2013125104 A1 WO2013125104 A1 WO 2013125104A1 JP 2012078819 W JP2012078819 W JP 2012078819W WO 2013125104 A1 WO2013125104 A1 WO 2013125104A1
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- signal
- transmission
- reliability signal
- reliability
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/70—Admission control; Resource allocation
- H04L47/82—Miscellaneous aspects
- H04L47/826—Involving periods of time
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0078—Avoidance of errors by organising the transmitted data in a format specifically designed to deal with errors, e.g. location
- H04L1/0086—Unequal error protection
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
- B66B1/3415—Control system configuration and the data transmission or communication within the control system
- B66B1/3446—Data transmission or communication within the control system
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/60—Scheduling or organising the servicing of application requests, e.g. requests for application data transmissions using the analysis and optimisation of the required network resources
- H04L67/62—Establishing a time schedule for servicing the requests
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/30—Definitions, standards or architectural aspects of layered protocol stacks
- H04L69/32—Architecture of open systems interconnection [OSI] 7-layer type protocol stacks, e.g. the interfaces between the data link level and the physical level
- H04L69/322—Intralayer communication protocols among peer entities or protocol data unit [PDU] definitions
- H04L69/324—Intralayer communication protocols among peer entities or protocol data unit [PDU] definitions in the data link layer [OSI layer 2], e.g. HDLC
Definitions
- the present invention relates to a communication control apparatus that performs communication between devices constituting an elevator.
- a high reliability signal signals that are related to the operation of the elevator and require high reliability
- signals that do not require high reliability such as BGM (hereinafter referred to as a non-high reliability signal)
- BGM signals that do not require high reliability
- Each device generates a series circuit with multiple devices such as sensors and switches, detects the input of high reliability signals by turning the voltage on and off, and determines whether each device is in a highly reliable state.
- a dedicated signal line is prepared for each device / function, and each device performs communication by an arbitrary communication method determined for each device.
- Patent Documents 1 and 2 below disclose techniques for realizing digitization and networking of a highly reliable signal while satisfying each standard.
- the signal types to be integrated are only the high reliability signal or the signal for controlling the high reliability signal and the elevator (hereinafter referred to as a control signal). Since these signals are generally periodic signals, priority control or the like according to the signal type is not required.
- non-reliable signals when non-reliable signals are integrated into high-reliability signals, non-reliable signals include non-periodic signals. There is a problem that priority control according to the signal type is required so as not to affect the signal. In addition, since the high reliability signal is required to be transmitted in a short cycle, it is difficult to transmit a large non-reliable signal without affecting the transmission / reception of the high reliability signal. there were.
- the present invention has been made in view of the above, and an object of the present invention is to obtain a communication control device capable of realizing efficient non-reliable signal communication without affecting high-reliability signal communication. To do.
- the present invention provides a high-reliability signal that requires high reliability and a non-high-reliability that does not require high reliability between the elevator car and the control device.
- a communication control device mounted on the basket and the control device that performs communication by integrating the signal with the signal, and continuously transmits the high-reliability signal a specified number of times in accordance with a transmission timing defined within a transmission cycle.
- High-reliability signal transmission / reception control means for performing control, transmission scheduler means for calculating an idle time during which the high-reliability signal is not transmitted based on the prescribed transmission timing, and the non-reliable signal being the idle If transmission is not possible within the time, the non-reliable signal transmission / reception is performed so that the non-reliable signal is divided into sizes that can be transmitted in the idle time and transmitted as two or more packets.
- Control means wherein the transmission scheduler means transmits the high reliability signal at the specified transmission timing, and transmits the non-high reliability signal divided by the idle time. To do.
- the communication control device and the communication control method according to the present invention have the effect that efficient non-reliable signal communication can be realized without affecting high-reliability signal communication.
- FIG. 1 is a diagram illustrating a configuration example of an elevator apparatus.
- FIG. 2 is a diagram illustrating a configuration example of the communication control apparatus according to the first embodiment.
- FIG. 3 is a diagram illustrating a communication system for high reliability signals.
- FIG. 4 is a flowchart showing a communication control method of the communication control apparatus according to the first embodiment.
- FIG. 5 is a flowchart illustrating a communication control method in consideration of a response to the opposite device in the communication control device.
- FIG. 6 is a flowchart illustrating a communication control method that takes into account the response to the opposite device and the response from the opposite device in the communication control device.
- FIG. 7 is a diagram showing a transmission packet in the third embodiment.
- FIG. 8 is a diagram illustrating a configuration example of the communication control apparatus according to the third embodiment.
- FIG. 9 is a flowchart illustrating a communication control method of the communication control apparatus according to the third embodiment.
- FIG. 1 is a diagram illustrating a configuration example of an elevator apparatus according to the present embodiment.
- the elevator apparatus includes a control panel 10, an elevator control cable 20, and a car 30.
- a control panel 10 that is generally installed in a machine room and controls the operation of the elevator and the car 30 on which the user gets on and off communicate via the elevator control cable 20.
- the control panel 10 includes a communication control device 11, a main control device 12, and an interphone 13.
- the communication control device 11 controls communication between the basket 30 and the control panel 10.
- the main control device 12 performs management / control over the sensors installed in the car 30 and the hoistway and other elevators.
- the main controller 12 performs communication using a high reliability signal.
- the interphone 13 is a peripheral device installed on the control panel 10 and makes a call or the like with the basket 30 side.
- the intercom 13 (peripheral device) performs communication using a non-reliable signal.
- the elevator control cable 20 is a cable that connects the control panel 10 and the car 30 and includes a communication line used for integrated communication.
- the basket 30 includes a communication control device 31, a basket control device 32, a sensor 33, a card reader 34, and an interphone 35.
- Communication control devices 11 and 31 control communication between the basket 30 and the control panel 10.
- the car control device 32 performs processing such as opening and closing the door of the car 30 based on a command from the main control device 12 of the control panel 10.
- the basket control device 32 performs communication using a high reliability signal.
- the sensor 33 is installed in the car 30 and outside the car 30, acquires the state of the elevator, and notifies the main control device 12 of the control panel 10 via the communication control device 31.
- the sensor 33 communicates with a high reliability signal.
- the sensor is generally installed also in the hoistway etc., since it does not affect the operation
- the card reader 34 and the interphone 35 are peripheral devices installed in the basket 30, the card reader 34 authenticates the card owner, and the interphone 35 makes a call or the like with the control panel 10 side.
- the peripheral device showed the card reader 34 and the intercom 35 as an example, it is not limited to these.
- Peripheral devices include, for example, surveillance cameras and in-car BGM playback devices, and other devices that perform communication, such as general-purpose Ethernet (registered trademark) communication I / F, that are related to communication using high-reliability signals In general, excluding.
- FIG. 2 is a diagram illustrating a configuration example of the communication control device 31 according to the present embodiment.
- the communication control device 31 includes a high reliability signal transmission / reception control unit 41, a non-high reliability signal transmission / reception control unit 42, a transmission scheduler unit 43, and a transmission / reception I / F unit 44.
- the communication control device 11 there are some devices such as the sensor 33 that are not connected as compared with the communication control device 31, and the basket control device 32 is replaced with the main control device 12.
- the high-reliability signal transmission / reception control unit 41 generates a high-reliability signal based on information from the sensor 33 and the basket control device 32, and follows a policy of high-reliability signal communication that is a transmission timing defined within a transmission cycle. After performing processing necessary for continuous transmission or response request, the generated high reliability signal is transferred to the transmission scheduler unit 43. Further, the high reliability signal transmission / reception control unit 41 provides the transmission scheduler unit 43 with information on whether or not a response request is used based on the high reliability signal communication policy and the number of times of continuous transmission as control information.
- the non-reliable signal transmission / reception control unit 42 receives a transmission request from a connected peripheral device such as the interphone 35 or the card reader 34, and receives packet size information (control information) that can be transmitted from the transmission scheduler unit 43. In the above, an appropriately sized packet (non-reliable signal) is generated and passed to the transmission scheduler unit 43.
- the transmission scheduler unit 43 controls transmission processing timing.
- the transmission scheduler unit 43 preferentially delivers the high reliability signal received from the high reliability signal transmission / reception control unit 41 to the transmission / reception I / F unit 44 (according to the prescribed transmission timing), and also performs high reliability signal transmission / reception control.
- the time that the non-reliable signal can use the communication path is calculated, and transmission is possible based on the calculated time Packet size information (control information) is provided to the non-reliable signal transmission / reception control unit 42.
- the transmission / reception I / F unit 44 outputs the signal (high reliability signal, non-high reliability signal) received from the transmission scheduler unit 43 to the elevator control cable 20.
- the transmission / reception I / F unit 44 also sends a high reliability signal to the high reliability signal transmission / reception control unit 41 and a non-high reliability signal to the non-high reliability signal input from the elevator control cable 20 according to the signal type.
- the high-reliability signal transmission / reception control unit 41 of the communication control devices 11 and 31 can perform high-reliability signal communication using any one of the conventional communication methods. Which method is used to perform high-reliability signal communication can select a method that seems to be more appropriate in consideration of communication path characteristics such as communication delay between apparatuses.
- FIG. 3 is a diagram showing a communication system for high reliability signals.
- the horizontal axis represents time, and shows a time chart for transmitting a packet of a high reliability signal from the transmission side device to the reception side device.
- Communication method # 1 realizes the desired reliability and responsiveness by measuring the bit error rate of the communication channel and continuously transmitting a high reliability signal according to the number of transmissions calculated based on the measurement result. ing.
- Communication method # 2 is a communication method that extends communication method # 1. It is empirically known that bit errors in a communication channel often occur in bursts. Therefore, by distributing the continuous transmission timing of the high-reliability signal within an allowable range, it is possible to increase the resistance against burst bit errors. Note that the number of continuous transmissions in the communication methods # 1 and # 2 is both seven, but this is an example, and the number of continuous transmissions is changed every moment according to the transmission path quality.
- Communication method # 3 is a communication method in which a highly reliable signal is communicated using a response request and continuous transmission.
- the communication method based on the response request can explicitly confirm that information has arrived at the opposite device (corresponding to the receiving device when the transmitting device is the own device in FIG. 3) (ACK success)
- ACK success When communication fails (when ACK fails), it is necessary to perform retransmission processing, and it is difficult to ensure responsiveness. Therefore, in the communication method # 3, the reliability and the responsiveness required for the high reliability signal are realized by performing retransmission using continuous transmission when communication fails due to a response request.
- the non-reliable signal includes various signals such as a general-purpose Ethernet signal in addition to the signals in the interphones 13 and 35 and the card reader 34, and the packet size also varies.
- the size of one data is 1 byte
- the size of one data is 64 to 1522 bytes.
- the size of idle time that can be used for low-reliability communication is limited.
- the communication method # 1 when the period is 1 ms and the continuous transmission is 7 times, the maximum packet size of the non-reliable signal that can be transmitted is up to 642 bytes, and the communication method # 2 is used under the same conditions. Up to 74 bytes.
- the period and the number of continuous transmissions are not limited to the above conditions, and there is a limit to the packet size that can be transmitted even when the conditions change.
- the transmission of the non-reliable signal packet is completed by delaying the communication of the high-reliability signal.
- the communication of the non-reliable signal is interrupted halfway, and the high-reliability signal is transmitted according to the scheduling of the high-reliability signal (the non-reliable signal that was being transmitted is discarded).
- This process makes it difficult to ensure the reliability and responsiveness of a highly reliable signal.
- the high reliability signal is a periodic signal, 2. When this process is adopted, there is a possibility that a communication may not be successful indefinitely.
- a non-reliable signal packet exceeding the available free time size is divided and transmitted.
- the probability of transmission is the highest regardless of the communication method of the reliable signal and the number of continuous transmissions.
- packet communication such as Ethernet requires a header, a footer, an interframe gap called IFG (Inter Frame Gap), a preamble, and the like, so that the transmission efficiency of the actual data portion decreases as the number of packets increases. Therefore, by appropriately changing the packet division size according to the communication method of the high reliability signal and the number of consecutive transmissions, the transmission efficiency of the non-reliable signal can be improved without affecting the communication of the high reliability signal. It becomes possible to improve.
- FIG. 4 is a flowchart showing a communication control method of the communication control apparatus according to the present embodiment.
- the high reliability signal transmission / reception control unit 41 determines the transmission method and the number of continuous transmissions for transmitting the high reliability signal within the transmission period, The packet of the high reliability signal is generated based on the determined transmission method and the transmission timing defined by the number of continuous transmissions (step S1).
- the transmission scheduler unit 43 acquires information on the transmission method and the number of continuous transmissions at the beginning of each transmission cycle from the high reliability signal transmission / reception control unit 41. Since the number of times of continuous transmission changes according to the condition of the communication channel, the latest information is acquired and reflected in the operation every cycle, or at least every fixed cycle.
- the transmission scheduler unit 43 performs scheduling of the high reliability signal based on the information obtained from the high reliability signal transmission / reception control unit 41, and calculates a free time during which the high reliability signal is not transmitted based on the result (step) S2).
- the transmission scheduler unit 43 notifies the non-reliable signal transmission / reception control unit 42 of idle time information.
- the non-reliable signal transmission / reception control unit 42 determines that the size of the non-reliable signal cannot be transmitted in the notified vacant time, and the non-reliable signal transmission / reception control unit 42
- the reliability signal packet is divided into two or more packets to generate a non-high reliability signal packet (step S3).
- the transmission scheduler unit 43 schedules the non-reliable signal divided using the free time (step S4).
- the communication control apparatuses 11 and 31 transmit the high reliability signal at the timing determined by the transmission scheduler unit 43 at the beginning of the transmission cycle regardless of the transmission status of the non-high reliability signal.
- a highly reliable signal is transmitted using the communication method # 2
- the communication control devices 11 and 31 are scheduled to transmit the next time. High reliability signals may be sent immediately. Thereby, the state which cannot use a communication path substantially can be reduced as much as possible, and the communication efficiency can be improved.
- communication method # 3 is used as the communication method of the high reliability signal.
- the communication control devices 11 and 31 are connected at the end of the transmission cycle depending on whether a response to the high reliability signal transmitted by the own device is returned. Decide if you need to send. That is, does the transmission scheduler unit 43 require continuous transmission until a response is obtained from the opposite device side (the basket 30 when the own device is the control panel 10 and the control panel 10 when the own device is the basket 30)? I can't judge.
- the communication control devices 11 and 31 perform the non-high reliability signal until a series of processes for returning a response is completed after receiving the high reliability signal from the opposite device.
- the maximum packet size that can be transmitted immediately before the start of (transmission cycle) is set as the maximum value, and packet division is performed so as to be within that range. This makes it possible to efficiently transmit a non-reliable signal as compared with the case where the packet is always divided into the shortest packet length.
- FIG. 5 is a flowchart showing a communication control method in consideration of a response to the opposite device in the communication control device. Steps S1 to S2 and S4 are the same as in FIG.
- the non-reliable signal transmission / reception control unit 42 does not receive a high-reliability signal from the opposite device or responds to the high-reliability signal received from the opposite device within the transmission cycle. If not returned (step S11: No), the non-reliable signal is generated by dividing the non-reliable signal packet into the shortest size defined by the communication path used for transmitting the non-reliable signal.
- step S11 If the device returns a response to the high-reliability signal received from the opposite device (step S11: Yes), the time from the response return to the start of the next transmission cycle
- the non-reliable signal that cannot be transmitted in the idle time is divided into a size that can be transmitted in the idle time, and the non-reliable signal is generated and transmitted as two or more packets (S). -Up S13).
- a non-reliable signal when transmitting a response request packet to the opposite device, a non-reliable signal can be detected if the opposite device recognizes the response and can detect the last transmission timing that prevents retransmission by continuous transmission.
- the transmission / reception control unit 42 may calculate the time from the transmission point of the non-reliable signal to the transmission timing, and set the packet length that completes transmission within that time as the maximum packet length in the non-reliable signal. This makes it possible to transmit a non-reliable signal more efficiently.
- the communication control devices 11 and 31 need to retransmit the high reliability signal by continuous transmission. At this time, if the non-reliable signal is being transmitted, the transmission of the non-reliable signal is interrupted and the high-reliability signal is transmitted. For this reason, the communication control devices 11 and 31 receive a high-reliability signal from the opposite device, have already responded, and have not received a response to the high-reliability signal transmitted from the own device.
- the maximum packet length of the non-reliable signal is set to the packet length that can be transmitted within the time from the time of transmission of the non-reliable signal to the start of retransmission by continuous transmission.
- the packet length capable of completing transmission within the time may be the maximum packet length of the non-reliable signal.
- FIG. 6 is a flowchart showing a communication control method that takes into account the response to the opposite device and the response from the opposite device in the communication control device. Steps S1 to S2 and S4 are the same as those shown in FIGS.
- the non-reliable signal transmission / reception control unit 42 does not receive a high-reliability signal from the opposite device or responds to the high-reliability signal received from the opposite device within the transmission cycle.
- control which divides
- the non-high reliability signal transmission / reception control unit 42 applies the high reliability signal received from the opposite device. Necessary for transmitting a high-reliability signal within the transmission cycle when a response is returned and a response to the high-reliability signal transmitted from the own device is not received from the opposite device (step S21: No). Control is performed to transmit a non-reliable signal with the time excluding the processing time as an idle time (step S22), a response is returned to the highly reliable signal received from the opposite device, and transmitted from the own device.
- step S21 When the response to the high reliability signal is received from the opposite device (step S21: Yes), the response from the opposite device or the reception of the response from the opposite device, whichever is later, the next The time until the start signal periodically performs control to transmit the non-reliable signals as free time (step S23).
- the communication control devices 11 and 31 are used. Then, the non-reliable signal transmission / reception control unit 42 receives the high-reliability signal from the opposite device and then responds as described above, without assuming retransmission of the high-reliability signal by continuous transmission from the own device.
- the maximum packet length in the non-reliable signal may be determined based on the completion of a series of processes that return.
- the method of dividing the packet of the non-reliable signal and transmitting the packet of the non-reliable signal at a timing at which the high-reliability signal is not transmitted realizes integrated communication using a narrowband communication method. It is a way for. Therefore, it is highly useful when integrated communication is performed using a relatively narrow band communication method such as 10BASE-T.
- the communication system described in this embodiment can be applied to a communication system having a wider bandwidth such as 100BASE-T, but sufficient performance can be obtained without applying the communication system of this embodiment. Therefore, there is almost no effect by applying.
- the communication method of this embodiment is applied, so that high-reliability signal communication and non-high-reliability signal communication can be performed. Integration can be realized, and industrial applicability is particularly large in terms of realization cost.
- the communication control devices 11 and 31 installed in the control panel 10 and the car 30 constituting the elevator perform periodic communication of high-reliability signals in sensors and the like. Therefore, the non-reliable signal packet is divided into a size that can be transmitted in the idle time using the idle time due to the communication of the highly reliable signal. Thereby, in the communication control apparatuses 11 and 31, efficient non-reliable signal communication can be realized without affecting high-reliability signal communication.
- Embodiment 2 FIG. In this embodiment, transmission of a non-reliable signal having periodicity will be described. A different part from Embodiment 1 is demonstrated.
- non-reliable signals there are signals with periodicity such as intercom signals.
- the transmission scheduler part 43 can always improve the real-time property by scheduling to transmit at the same timing within the transmission period. Further, in the case where the continuous transmission of the high-reliability signal is distributed, the transmission scheduler unit 43 partially changes the packet transmission interval of the high-reliability signal, thereby minimizing the short idle time that cannot be used for communication, Communication efficiency can be improved.
- the transmission scheduler unit 43 when performing communication of the high reliability signal using the communication method # 2, the transmission scheduler unit 43 performs the high reliability signal N (Nth consecutive transmission) and the high reliability signal N + 1 (N + 1 continuous transmission). If the free time between the high reliability signal N and the high reliability signal N + 1 is 64 bytes or less as a result of scheduling the periodic non-high reliability signal during the second), the idle time can be used. Can not. In such a case, the transmission scheduler unit 43 adjusts the transmission timings of the high reliability signal N, the high reliability signal N + 1, and the periodic non-high reliability signal in advance so as to prevent a free time. That is, the interval at which the high reliability signal is continuously transmitted is changed. As a result, further improvement in communication efficiency can be expected.
- Embodiment 3 FIG. In the present embodiment, one transmission packet is composed of a high reliability signal and a non-high reliability signal. A different part from Embodiment 1, 2 is demonstrated.
- the high reliability signal and the non-high reliability signal are always stored in separate packets for communication.
- the high-reliability signal is contact information of a sensor or the like, door opening / closing information, and the like, the amount of information is small. Therefore, the size of a packet storing only the high-reliability signal is generally small. For example, in many communication methods such as Ethernet, a minimum packet length that can be transmitted is defined. When the packet size is smaller than the minimum packet length, the packet size is generally adjusted to the minimum packet length by padding.
- the communication control device uses the leading portion of the non-high-reliability signal as the padding area of the high-reliability signal.
- the communication efficiency is improved by storing the non-reliable signal divided into the same size and the padding area.
- the communication control apparatus may not perform the process of dividing the non-high reliability signal and storing it in the padding area of the high reliability signal. Note that if the padding area exists in the high reliability signal regardless of the data size of the non-high reliability signal, the communication control apparatus divides the non-high reliability signal and stores it in the padding area of the high reliability signal. It is good also as a specification. However, in this case, there is no performance improvement effect (improvement of communication efficiency) by performing the division.
- the non-reliable signal waiting for transmission already includes padding, and the actual data part of the high-reliability signal and the non-reliable signal (excluding padding from the payload part of the Ethernet frame). If the total size of the (part) is a size that can be accommodated in 64 bytes that is the minimum size of the Ethernet packet, the two packets may be integrated and transmitted as one packet.
- FIG. 7 is a diagram showing a transmission packet in the present embodiment.
- Each packet has a header and a footer, and there is an IFG between each packet.
- each high-reliability signal packet includes padding, and the non-reliable signal is transmitted as another independent packet.
- a part of the non-reliable signal can be taken into the high-reliability signal packet to improve the communication efficiency, and the time for the non-reliable signal to use the communication path can be increased. Can be reduced.
- not all the information of the non-reliable signal can be stored in the high-reliability signal packet, and a part remains as an individual non-reliable signal packet.
- the size of the non-reliable signal is small, it is also possible to store information of all non-reliable signals in the padding portion in the high-reliability signal packet. In such a case, since the header and footer can be reduced, a particularly remarkable effect of improving the band utilization efficiency can be obtained.
- FIG. 8 is a diagram illustrating a configuration example of the communication control apparatus according to the present embodiment.
- the control panel 10 and the basket 30 are provided with communication control devices having the same configuration.
- the communication control device 31a in the basket 30 will be described.
- the communication control device 31a includes a high reliability signal transmission / reception control unit 41a, a non-high reliability signal transmission / reception control unit 42a, a transmission scheduler unit 43, a transmission / reception I / F unit 44, and a packet generation unit 45.
- the high-reliability signal transmission / reception control unit 41a generates a high-reliability signal in the same manner as the high-reliability signal transmission / reception control unit 41, but passes the information part to the packet generation unit 45 without using the packet format. Further, the high reliability signal transmission / reception control unit 41a obtains a padding area when the packet size of the high reliability signal is smaller than the shortest packet size defined by the communication path to be used.
- the non-reliable signal transmission / reception control unit 42a generates a non-reliable signal in the same manner as the non-reliable signal transmission / reception control unit 42, but passes the information portion to the packet generation unit 45 without using the packet format. At this time, the non-reliable signal transmission / reception control unit 42a divides the non-reliable signal based on the size of the padding area.
- the packet generation unit 45 uses a single information portion of the high reliability signal acquired from the high reliability signal transmission / reception control unit 41a and a non-high reliability signal information portion acquired from the non-high reliability signal transmission / reception control unit 42a. Store in the packet and generate one transmission packet.
- the packet generation unit 45 performs the integration so that the packet size generated by the integration is 65 bytes or more, the communication success probability of the high reliability signal decreases.
- the packet generation unit 45 performs the integration so that the packet size generated by the integration is 65 bytes or more, the communication success probability of the high reliability signal decreases.
- FIG. 9 is a flowchart showing a communication control method of the communication control apparatus according to the present embodiment.
- the high reliability signal transmission / reception control unit 41a When generating the high reliability signal, the high reliability signal transmission / reception control unit 41a generates a high reliability signal packet if the packet size of the high reliability signal is smaller than the shortest packet size defined in the communication path to be used. A padding area for obtaining the shortest packet size is obtained (step S31). The high-reliability signal transmission / reception control unit 41a passes the generated high-reliability signal to the packet generation unit 45 without using the packet format.
- the non-reliable signal transmission / reception control unit 42a divides the non-reliable signal into a size that can be stored in the padding area. A signal is generated (step S32).
- the non-high-reliability signal transmission / reception control unit 42a passes the generated non-high-reliability signal to the packet generation unit 45 without using the packet format.
- the packet generator 45 stores the divided non-reliable signal in the padding area of the highly reliable signal and generates a transmission packet (step S33).
- the transmission scheduler unit 43 performs transmission scheduling of the transmission packet in which the non-reliable signal is stored in the padding area of the highly reliable signal (step S34).
- the communication control apparatus divides the non-high reliability signal into the size of the padding area, and the high reliability The signal information and the non-reliable signal information are transmitted as one transmission packet.
- efficient non-reliable signal communication can be realized without affecting high-reliability signal communication, and the bandwidth required for transmission can be reduced, thereby improving communication efficiency. it can.
- the communication control device is useful for communication between devices constituting an elevator, and is particularly suitable for communication with different signal types.
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Abstract
Description
図1は、本実施の形態のエレベータ装置の構成例を示す図である。エレベータ装置は、制御盤10と、エレベータ制御ケーブル20と、カゴ30と、から構成される。一般的に機械室に設置されてエレベータの動作を制御する制御装置である制御盤10と、利用者が乗降するカゴ30は、エレベータ制御ケーブル20を介して通信を行う。
1.高信頼性信号の通信を遅らせて非高信頼性信号パケットの送信を完了させる。
2.非高信頼性信号の通信を途中で中断し、高信頼性信号のスケジューリングに従って高信頼性信号を送信する(送信中だった非高信頼性信号は破棄する)。
しかしながら、1.の処理は高信頼性信号の信頼性、応答性確保が困難となる。また、高信頼性信号は周期的な信号であることから、2.の処理を採用した場合には、いつまでも通信が成功しないという現象が起こる可能性がある。
本実施の形態では、周期性を持つ非高信頼性信号の送信について説明する。実施の形態1と異なる部分について説明する。
本実施の形態では、高信頼性信号と非高信頼性信号で1つの送信パケットを構成する。実施の形態1、2と異なる部分について説明する。
Claims (20)
- エレベータを構成するカゴと制御装置との間で、高い信頼性を要する高信頼性信号と高い信頼性を要しない非高信頼性信号とを統合して通信を行う、前記カゴおよび前記制御装置に搭載された通信制御装置であって、
送信周期内において規定された送信タイミングに従って、前記高信頼性信号を規定回数だけ連続送信する制御を行う高信頼性信号送受信制御手段と、
前記規定された送信タイミングに基づいて、前記高信頼性信号を送信しない空き時間を算出する送信スケジューラ手段と、
前記非高信頼性信号が前記空き時間内で送信できない場合、前記非高信頼性信号を前記空き時間で送信可能なサイズに分割し、2以上のパケットとして送信する制御を行う非高信頼性信号送受信制御手段と、
を備え、
前記送信スケジューラ手段は、前記規定された送信タイミングで前記高信頼性信号を送信し、前記空き時間で分割された前記非高信頼性信号を送信する、
ことを特徴とする通信制御装置。 - 前記高信頼性信号送受信制御手段は、前記高信頼性信号を前記送信周期内で分散させて送信する制御を行う、
ことを特徴とする請求項1に記載の通信制御装置。 - エレベータを構成するカゴと制御装置との間で、高い信頼性を要する高信頼性信号と高い信頼性を要しない非高信頼性信号とを統合して通信を行う、前記カゴおよび前記制御装置に搭載された通信制御装置であって、
通信相手である対向装置から前記高信頼性信号を受信したときは、当該受信した高信頼性信号に対する応答を前記対向装置へ返信する場合に、
送信周期内において規定された送信タイミングに従って前記高信頼性信号を送信する制御を行う高信頼性信号送受信制御手段と、
前記規定された送信タイミングに基づいて、前記高信頼性信号を送信しない空き時間を算出する送信スケジューラ手段と、
前記非高信頼性信号が前記空き時間内で送信できない場合、前記非高信頼性信号を前記空き時間で送信可能なサイズに分割し、2以上のパケットとして送信する制御を行う非高信頼性信号送受信制御手段と、
を備え、
前記非高信頼性信号送受信制御手段は、前記送信周期内において、
前記対向装置から前記高信頼性信号を受信していない、または前記対向装置から受信した高信頼性信号に対して応答を返信していない場合、当該非高信頼性信号の送信に使用する通信路で規定された最短サイズに当該非高信頼性信号のパケットを分割して送信する制御を行い、
前記対向装置から受信した高信頼性信号に対して応答を返信した場合、当該応答返信後から次の送信周期開始までの時間を空き時間として、当該空き時間で送信できない前記非高信頼性信号について当該空き時間で送信可能なサイズに分割し、2以上のパケットとして送信する制御を行う、
ことを特徴とする通信制御装置。 - 前記非高信頼性信号送受信制御手段は、
前記対向装置から受信した高信頼性信号に対して応答を返信し、かつ、自装置から送信した高信頼性信号に対する応答を前記対向装置から受信していない場合、当該送信周期内で前記高信頼性信号を送信するために必要な処理時間を除いた時間を空き時間とし、
前記対向装置から受信した高信頼性信号に対して応答を返信し、かつ、自装置から送信した高信頼性信号に対する応答を前記対向装置から受信した場合、前記対向装置に対する応答の返信または前記対向装置からの応答の受信のいずれか遅い方から次の送信周期開始までの時間を空き時間とする、
ことを特徴とする請求項3に記載の通信制御装置。 - 前記高信頼性信号送受信制御手段は、自装置から送信した高信頼性信号に対する応答を前記対向装置から受信しない場合、当該高信頼性信号を連続送信により再送する制御を行う、
ことを特徴とする請求項3に記載の通信制御装置。 - 前記高信頼性信号送受信制御手段は、自装置から送信した高信頼性信号に対する応答を前記対向装置から受信しない場合、当該高信頼性信号を連続送信により再送する制御を行う、
ことを特徴とする請求項4に記載の通信制御装置。 - 前記送信スケジューラ手段は、前記非高信頼性信号の一部が周期性のある情報である場合、当該周期性のある情報を格納したパケットを、前記送信周期内において同一タイミングで送信するスケジューリングを行う、
ことを特徴とする請求項1~6のいずれか1つに記載の通信制御装置。 - 前記送信スケジューラ手段は、前記高信頼性信号および非高信頼性信号のうち周期性のある情報を格納したパケットの送信タイミングをスケジューリングした結果、使用する通信路で規定された最短サイズのパケットを送信する時間間隔が残らなかった場合、前記高信頼性信号の送信タイミングを変更してパケット送信できない時間を減少させる、
ことを特徴とする請求項7に記載の通信制御装置。 - エレベータを構成するカゴと制御装置との間で、高い信頼性を要する高信頼性信号と高い信頼性を要しない非高信頼性信号とを統合して通信を行う、前記カゴおよび前記制御装置に搭載された通信制御装置であって、
送信周期内において規定された送信タイミングに従って前記高信頼性信号を送信する制御を行う場合に、前記高信頼性信号のパケットサイズが使用する通信路で規定された最短のパケットサイズより小さいときは、前記高信頼性信号のパケットサイズを前記最短のパケットサイズにするためのパディング領域を求める高信頼性信号送受信制御手段と、
前記非高信頼性信号のパケットサイズが前記パディング領域のサイズより大きい場合、前記非高信頼性信号を当該パディング領域に格納可能なサイズに分割する非高信頼性信号送受信制御手段と、
分割された非高信頼性信号を前記高信頼性信号のパディング領域に格納して送信パケットを生成するパケット生成手段と、
前記非高信頼性信号が前記高信頼性信号のパディング領域に格納された送信パケットの送信スケジューリングを行う送信スケジューラ手段と、
を備えることを特徴とする通信制御装置。 - 前記高信頼性信号が前記送信周期内において規定された送信タイミングで規定回数だけ連続送信される場合、
連続送信された各高信頼性信号のパディング領域に、異なる非高信頼性信号または異なる分割された非高信頼性信号を格納して送信パケットを生成する、
ことを特徴とする請求項9に記載の通信制御装置。 - エレベータを構成するカゴと制御装置との間で、高い信頼性を要する高信頼性信号と高い信頼性を要しない非高信頼性信号とを統合して通信を行う、前記カゴおよび前記制御装置に搭載された通信制御装置における通信制御方法であって、
送信周期内において規定された送信タイミングに従って、前記高信頼性信号を規定回数だけ連続送信する制御を行う高信頼性信号送受信制御ステップと、
前記規定された送信タイミングに基づいて、前記高信頼性信号を送信しない空き時間を算出する空き時間算出ステップと、
前記非高信頼性信号が前記空き時間内で送信できない場合、前記非高信頼性信号を前記空き時間で送信可能なサイズに分割し、2以上のパケットとして送信する制御を行う非高信頼性信号送受信制御ステップと、
前記規定された送信タイミングで前記高信頼性信号を送信し、前記空き時間で分割された前記非高信頼性信号を送信する送信スケジューリングステップと、
を含むことを特徴とする通信制御方法。 - 前記高信頼性信号送受信制御ステップでは、前記高信頼性信号を前記送信周期内で分散させて送信する制御を行う、
ことを特徴とする請求項11に記載の通信制御方法。 - エレベータを構成するカゴと制御装置との間で、高い信頼性を要する高信頼性信号と高い信頼性を要しない非高信頼性信号とを統合して通信を行う、前記カゴおよび前記制御装置に搭載された通信制御装置における通信制御方法であって、
通信相手である対向装置から前記高信頼性信号を受信したときは、当該受信した高信頼性信号に対する応答を前記対向装置へ返信する場合に、
送信周期内において規定された送信タイミングに従って前記高信頼性信号を送信する制御を行う高信頼性信号送受信制御ステップと、
前記規定された送信タイミングに基づいて、前記高信頼性信号を送信しない空き時間を算出する空き時間算出ステップと、
前記非高信頼性信号が前記空き時間内で送信できない場合、前記非高信頼性信号を前記空き時間で送信可能なサイズに分割し、2以上のパケットとして送信する制御を行う非高信頼性信号送受信制御ステップと、
前記規定された送信タイミングで前記高信頼性信号を送信し、前記空き時間で分割された前記非高信頼性信号を送信する送信スケジューリングステップと、
を含み、
前記非高信頼性信号送受信制御ステップでは、前記送信周期内において、
前記対向装置から前記高信頼性信号を受信していない、または前記対向装置から受信した高信頼性信号に対して応答を返信していない場合、当該非高信頼性信号の送信に使用する通信路で規定された最短サイズに当該非高信頼性信号のパケットを分割して送信する制御を行い、
前記対向装置から受信した高信頼性信号に対して応答を返信した場合、当該応答返信後から次の送信周期開始までの時間を空き時間として、当該空き時間で送信できない前記非高信頼性信号について当該空き時間で送信可能なサイズに分割し、2以上のパケットとして送信する制御を行う、
ことを特徴とする通信制御方法。 - 前記非高信頼性信号送受信制御ステップでは、
前記対向装置から受信した高信頼性信号に対して応答を返信し、かつ、自装置から送信した高信頼性信号に対する応答を前記対向装置から受信していない場合、当該送信周期内で前記高信頼性信号を送信するために必要な処理時間を除いた時間を空き時間とし、
前記対向装置から受信した高信頼性信号に対して応答を返信し、かつ、自装置から送信した高信頼性信号に対する応答を前記対向装置から受信した場合、前記対向装置に対する応答の返信または前記対向装置からの応答の受信のいずれか遅い方から次の送信周期開始までの時間を空き時間とする、
ことを特徴とする請求項13に記載の通信制御方法。 - 前記高信頼性信号送受信制御ステップでは、自装置から送信した高信頼性信号に対する応答を前記対向装置から受信しない場合、当該高信頼性信号を連続送信により再送する制御を行う、
ことを特徴とする請求項13に記載の通信制御方法。 - 前記高信頼性信号送受信制御ステップでは、自装置から送信した高信頼性信号に対する応答を前記対向装置から受信しない場合、当該高信頼性信号を連続送信により再送する制御を行う、
ことを特徴とする請求項14に記載の通信制御方法。 - 前記送信スケジューリングステップでは、前記非高信頼性信号の一部が周期性のある情報である場合、当該周期性のある情報を格納したパケットを、前記送信周期内において同一タイミングで送信する、
ことを特徴とする請求項11~16のいずれか1つに記載の通信制御方法。 - 前記送信スケジューリングステップでは、前記高信頼性信号および非高信頼性信号のうち周期性のある情報を格納したパケットの送信タイミングをスケジューリングした結果、使用する通信路で規定された最短サイズのパケットを送信する時間間隔が残らなかった場合、前記高信頼性信号の送信タイミングを変更してパケット送信できない時間を減少させる、
ことを特徴とする請求項17に記載の通信制御方法。 - エレベータを構成するカゴと制御装置との間で、高い信頼性を要する高信頼性信号と高い信頼性を要しない非高信頼性信号とを統合して通信を行う、前記カゴおよび前記制御装置に搭載された通信制御装置における通信制御方法であって、
送信周期内において規定された送信タイミングに従って前記高信頼性信号を送信する制御を行う場合に、前記高信頼性信号のパケットサイズが使用する通信路で規定された最短のパケットサイズより小さいときは、前記高信頼性信号のパケットサイズを前記最短のパケットサイズにするためのパディング領域を求める高信頼性信号送受信制御ステップと、
前記非高信頼性信号のパケットサイズが前記パディング領域のサイズより大きい場合、前記非高信頼性信号を当該パディング領域に格納可能なサイズに分割する非高信頼性信号送受信制御ステップと、
分割された非高信頼性信号を前記高信頼性信号のパディング領域に格納して送信パケットを生成するパケット生成ステップと、
前記非高信頼性信号が前記高信頼性信号のパディング領域に格納された送信パケットの送信スケジューリングを行う送信スケジューラ手段と、
を含むことを特徴とする通信制御方法。 - 前記高信頼性信号が前記送信周期内において規定された送信タイミングで規定回数だけ連続送信される場合、
連続送信された各高信頼性信号のパディング領域に、異なる非高信頼性信号または異なる分割された非高信頼性信号を格納して送信パケットを生成する、
ことを特徴とする請求項19に記載の通信制御方法。
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Also Published As
Publication number | Publication date |
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DE112012005930B4 (de) | 2021-03-25 |
CN104137516A (zh) | 2014-11-05 |
JPWO2013125104A1 (ja) | 2015-07-30 |
DE112012005930T5 (de) | 2014-12-18 |
US20150117465A1 (en) | 2015-04-30 |
JP5666056B2 (ja) | 2015-02-12 |
CN104137516B (zh) | 2017-03-01 |
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