KR101072065B1 - Apparatus and method for transmitting elevator signals - Google Patents

Abstract

The present invention relates to an elevator signal transmission apparatus and method for determining and transmitting the transmission priority of various elevator signals, the data information table for storing information on the characteristics of the plurality of elevator signals indicating the operation state of the elevator, a plurality of An event generation inspection unit for checking whether an event of each of the plurality of elevator signals occurs based on the characteristic information of the elevator signal, and the transmission priority of the plurality of elevator signals based on the characteristic information of the plurality of elevator signals and the result of the event occurrence inspection. Priority determination and data selection section for determining and selecting information on elevator signal according to transmission priority, and data record for generating data record using the selected information and transmitting the generated data record. It provides an elevator apparatus and a signal transmission method comprising: a.

Elevator signal transmission, data information table, event occurrence, priority, data record

Description

Elevator signal transmission device and method {APPARATUS AND METHOD FOR TRANSMITTING ELEVATOR SIGNALS}

1 is a block diagram showing the configuration of a conventional elevator signal transmission device.

FIG. 2 is a diagram showing an internal structure of the data information table shown in FIG. 1; FIG.

3 is a block diagram showing the configuration of an elevator signal transmission apparatus according to an embodiment of the present invention.

4 is a diagram showing an internal structure of the data information table shown in FIG. 3;

<Explanation of symbols for the main parts of the drawings>

11: data information table

13: event occurrence inspection unit

15: priority determination and data selection unit

17: data record transfer unit

TECHNICAL FIELD The present invention relates to elevator systems, and more particularly, to an elevator signal transmission apparatus and method for transmitting various elevator signals based on the characteristics or importance of the signals.

As is well known, the elevator system is essentially installed in a high-rise building as a vertical means of transportation in the building, and provides lift, lower or stop service of the elevator car at the request of passengers or system administrators. This elevator system is operated under the control of an elevator group control system. The elevator group control system controls and manages up to eight elevator systems. Elevator systems and elevator group control systems need to communicate with each other for the purpose of control and management of the overall system, each of which is equipped with an elevator signal transmission device. Elevator systems equipped with an elevator signal transmission device and an elevator group control system transmit and receive various elevator signals related to the operation of the elevator at predetermined intervals.

1 shows a conventional elevator signal transmission apparatus mounted on an elevator system. The conventional elevator signal transmission apparatus 10 includes a data information table 1 for storing information on elevator signals, and an event occurrence inspection unit 3 for checking whether an event has occurred for each elevator signal. Event data selector 5 for selecting data on which an event has occurred, retransmission data selector 7 for selecting data to be retransmitted in case data is lost due to a transmission error, etc., and selected data And a data record transmitter 9 for storing the data in the data record for transmission. For convenience of explanation, hereinafter, various elevator signals are transmitted to the elevator group control system by an elevator signal transmission device mounted in the elevator system, but the signal transmission between the elevator group control system and the elevator system and the elevator group control are described. It can also be described as signal transmission between elevator systems under system control.

The event occurrence inspection unit 3 receives elevator signals from a main control unit (not shown) included in an elevator system or an elevator group control system and checks whether an event has occurred for each elevator signal. Here, the elevator signal may be an elevator car speed signal, an elevator car door closed signal, an elevator car call signal, an elevator car call assignment signal, or the like. In detail, the data values for elevator signals initially received from the main control unit are provided to the data information table 1 through the event occurrence inspection unit 3 and stored as current values of the elevator signals. After that, the event occurrence inspection unit 3 uses the data value for the elevator signals newly received from the main control unit after the preset period and the current values for the elevator signals initially stored in the data information table 1. Check whether an event occurs for a signal. In order to explain a process for checking whether an event occurs for each elevator signal, first, the data information table 1 will be described with reference to FIG. 2.

The data information table 1 shown in FIG. 2 exemplarily shows an example in an intermediate process in which various elevator signals are transmitted instead of the initial state. As shown in Fig. 2, the data information table 1 shows a field for storing a data index indicating each elevator signal, a field for storing a current value of elevator signals, and a previous value of elevator signals. A field for storing, a field for storing information indicating an event occurrence state of elevator signals, and a field for storing information indicating a selection state of event data.

More specifically, the data index for each elevator signal is preset by the elevator signal transmission protocol. For example, the elevator car speed signal is data index "0", the elevator car door closing signal is data index "1", the elevator car call signal is data index "2", the elevator car call allocation signal is data index "3", and so on. It can be defined as. As can be seen from the above, the initial state of all the fields of the data information table 1 is initialized to " 0 ". Thereafter, the data index and data value for the elevator signal first received through the event occurrence inspection unit 3 are stored in the corresponding data index and current value fields, respectively. In FIG. 2, information indicating whether an event has occurred and information indicating whether the event data is selected are stored in an event occurrence state field and a selection state field, respectively, for reference, a detailed description thereof will be described later.

Now, a process of checking whether an event has occurred in the event occurrence inspecting unit 3 will be described with reference to the data information table 1 shown in FIG. 2. The event occurrence inspection unit 3 compares two values stored in the current value and the previous value field and checks whether an event occurs for each elevator signal. That is, the event occurrence checker 3 compares the current value and the previous value stored in the current value field and the previous value field with respect to each data index, and determines that the event does not occur if the two values are the same. If the values are different, it is determined that an event has occurred, and information "0" or "1" indicating the comparison result is provided to the data information table 1 and stored. For example, in the case of the data index "1", the event occurrence inspection unit 3 is the elevator signal defined by the data index "1" because the previous value (0X01) and the current value (0X02) of the data index "1" are different from each other. Determines that the event has occurred, and stores information "1" indicating that the event has occurred in the event occurrence status field. At this time, the previous value and the current value of the data index are represented as hexadecimal values. This event occurrence checking and data updating process is repeatedly performed for all data indexes.

When the inspection process in the event occurrence inspection unit 3 is completed, the event data selection unit 5 and the retransmission data selection unit 7 select data for which an event has occurred and data for retransmission, respectively, which will be described later.

In detail, the event data selector 5 selects a data index and a current value of an elevator signal at which an event is generated based on the event occurrence state information stored in the event occurrence state field in the data information table 1. It is provided to the record transmission unit 9. For example, in FIG. 2, data indexes 1 and DN-1 having information " 1 " stored in the event occurrence status field and current values 0X02 and 0X10 of the data index are selected and output. At this time, the previous value stored in the previous value field of the data information table 1 is updated with the current value of the corresponding data index for the event occurrence check in the next cycle. That is, for the event occurrence check in the next period, the previous value (0X01) for the data index "1" in which the event occurred is updated to the current value (0X02). In addition, the event data selection unit 5 changes the selection state information of the data index selected as the event data from "0" to "1". The event data selection and selection state information update operation in the event data selection unit 5 described above is performed sequentially for all data indexes whose event occurrence state information in the data information table 1 is "1", and the previous period. In the data selection process, the first selected data index is selected and performed in consideration of the last selected data index.

The retransmission data selection section 7 is activated when the processing of the event data selection section 5 for all data indexes is completed, based on the event occurrence status information and the selection status information for all data indexes in the data information table 1. Select the data index and the current value to be retransmitted and provide it to the data record transmitter 9. For example, in FIG. 2, data indexes 0 and 2 in which the information stored in the event occurrence state field and the selection state field are all “0” and the current values 0x10 and 0X20 of the data index are selected and output. When all of the operations of the event data selecting section 5 and the resending data selecting section 7 are completed within the preset data transmission period, the resending data selecting section 7 selects the event occurrence status field and the selected state of the data information table 1. The values of the fields are all reset to "0", and the data information table 1 stores information about elevator signals newly received from the main control unit after a predetermined period.

The data record transmitter 9 combines the provided data index and current value selected by the event data selector 5 and the retransmitted data selector 7, the number of data to be transmitted, and the receiving node index of the data record to select a data record. Create The data record generated by the data record transmission unit 9 includes a field for storing an index of a target to receive the data record, a field for storing the number of data stored in the data record, and a field for storing data indexes. , A field for storing data values (current values) corresponding to the data index. For example, six pieces of data are sent from an elevator signaling device in any elevator system to an elevator group control system defined with a receiving node index " 0 " and the selected data index is " 1, 2, 10, 11, 15, 18. " Is "0" in the receiving node index field of the data record, "6" in the data count field, "1, 2, 10, 11, 15, 18" in the data index field, and data index "1 in the data value field. Data values (current values) corresponding to 2, 10, 11, 15, and 18 "are stored. The number of data stored in the data record can be easily changed or adjusted according to the size of the data record, elevator system performance, and the like. According to this data record generation method, the event data is preferentially stored in the data record according to a conventional data record generation algorithm, and a corresponding number of retransmission data is stored in the data record when storage space in each data record remains. This creates a data record.

As described above, the conventional elevator signal transmission device always transmits the event data preferentially over the retransmission data, and transmits only in the order of event occurrence without considering the characteristics or importance of the event data. As a result, a signal whose data value changes faster than other elevator signals, such as a speed signal of an elevator car, is transmitted as event data too often for its importance, thereby causing unnecessary data transmission and reducing data transmission efficiency. There is a problem. In addition, since the door closing signal of the elevator car is transmitted as event data only when the door of the car is closed, there is a problem that it takes a considerable time to restore the signal using the retransmission data when a transmission error of the door closing signal occurs.

Accordingly, the present invention is to solve the above problems, by transmitting various elevator signals based on the characteristics or importance of the signal, an elevator signal transmission device that can increase the transmission efficiency and effectively reduce the signal recovery time for transmission errors And to provide a method.

According to an aspect of the present invention, a data information table for storing information on characteristics of a plurality of elevator signals indicating an operation state of an elevator, and whether or not an event of each of the plurality of elevator signals is generated based on the characteristic information of the plurality of elevator signals. Event occurrence inspection unit for inspection, the priority for determining the transmission priority of the plurality of elevator signals based on the characteristic information of the plurality of elevator signals and the event occurrence test result and selecting the information on the elevator signal according to the transmission priority An elevator signal transmission device is provided that includes a determination and data selection unit, and a data record transmission unit for generating a data record using the selected information and transmitting the generated data record.

According to another feature of the invention, the step of storing information on the characteristics of the plurality of elevator signals indicating the operation state of the elevator, based on the characteristic information of the plurality of elevator signals to check whether the event of each of the plurality of elevator signals occurs Determining transmission priority of the plurality of elevator signals based on the characteristic information of the plurality of elevator signals and an event occurrence test result, and selecting information on the elevator signals according to the transmission priorities, and using the selected information. An elevator signal transmission method is provided that includes generating a data record and transmitting the generated data record.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to FIGS. 3 and 4.

3 shows an elevator signal transmission apparatus according to an embodiment of the present invention. As shown, the elevator signal transmission device 20 includes a data information table 11, an event occurrence inspection unit 13, a priority determination and data selection unit 15, and a data record transmission unit 17. As described with reference to FIG. 1, FIG. 3 illustrates that various elevator signals are transmitted to an elevator group control system by an elevator signal transmission device mounted in an elevator system, but the signal transmission between the elevator group control system and the elevator system, It may also be described as signal transmission between elevator systems under the control of an elevator group control system. In addition, since the event occurrence checking unit 13 and the data record transmitting unit 17 are very similar to the related art described with reference to FIG. 1, the data information table 11, the priority determination and the data selecting unit 15 will be described below. The present invention will be mainly described.                     

The data information table 11 of the present invention further includes various information representing the characteristics of elevator signals in addition to the data or information included in the conventional data information table. As shown in Fig. 4, the data information table 11 of the present invention includes a data index field, an event transmission period field, a retransmission limit time field, a previous transmission time field, a current value field, a previous value field, and an event. An occurrence status field, a transmission priority field, and a selection status field.

The data information table 11 shown in FIG. 4 exemplarily shows an example in an intermediate process in which elevator signals are transmitted, not in an initial state. As in the conventional data information table 1, the initial state of all the fields of the data information table 11 of the present invention is initialized to " 0 ". Thereafter, the data index and data value for elevator signals received from the main control unit (not shown) through the event occurrence inspection unit 13 are stored in the data index and current value fields, respectively. In addition, as shown in Figure 4, the event transmission period, retransmission limit time and previous transmission time information for each elevator signal is further received from the main control unit through the event occurrence inspection unit 13, respectively, the event transmission period field, Stored in the retransmission limit time field and the previous transmission time field. The event transmission period information indicates a preset event transmission period of each elevator signal, the retransmission limit time information indicates a preset retransmission limit time value of each elevator signal, and the previous transmission time information indicates a transmission time value of previous data. .

In detail, the event transmission period information indicates the transmission period of the event data for the elevator signal in which the event occurred. For example, in FIG. 4, the elevator car speed signal corresponding to the data index "DN-1" among the elevator signals in which an event occurred is selected and transmitted once every 300 ms according to the event transmission period. The retransmission limit time information is information for controlling the retransmission time of the transmitted event signal. For example, the door closing signal of the elevator car corresponding to the data index "0" is selected and transmitted once at most within 200 ms. The previous transmission time information indicates the transmission time of the previous data most recently transmitted through the data record transmitter 17 selected by the priority determination and data selection unit 15 to be described later among all the elevator signals. In FIG. 4, the event occurrence status, transmission priority, and selection status information are stored in the event occurrence status field, transmission priority field, and selection status field, respectively, for illustrative purposes, and detailed descriptions of the transmission priority and selection status information are given. And the process of determining the transmission priority according to the characteristics or importance of the elevator signal as described above, and to select and transmit the data according to the transmission will be described later. As described in detail in the prior art, the event occurrence state information among the above information is determined by the event occurrence inspection unit 13 whether an event occurs for each elevator signal, and according to the determination result, "0" or "1" is determined. Stored.

The priority determination and data selection unit 15 determines transmission priority for all elevator signals stored in the data information table 11. In detail, the priority determination and data selection unit 15 of the present invention is based on the following several conditions previously defined based on the characteristics or importance of each elevator signal, the transmission priority for the elevator signal. Determine. According to the present invention, first, if the following two conditions are satisfied, the transmission priority "1" is determined.

(Condition 1) Event occurrence status information "1"

(Condition 2) event sending cycle <elapsed time

Here, the elapsed time represents a time obtained by subtracting a previous transmission time from the current time with respect to each elevator signal, and the current time is data generated by combining the event data and / or retransmission data of the elevator signal by the data record transmitter 17. Shows the transmission time of the record. For example, assuming that the current time is 4200ms, the data index "DN-1" shown in FIG. 4 has event occurrence status information "1" and an event transmission period (300ms) is shorter than the elapsed time (4200ms-3800ms). Therefore, the elevator signal for the data index "DN-1" is determined to have a transmission priority of "1" by satisfying both of the above conditions. In a preferred embodiment of the present invention, if there are data indexes having the same transmission priority " 1 ", the detailed transmission priority is determined according to the event transmission period. In other words, a data index with a shorter event transmission period has a higher priority.

Then, according to the present invention, the transmission priority is determined to be "2" when the following two conditions are satisfied.

(Condition 1) Event occurrence status information "0"

(Condition 2) Retransmission Limit Time <Elapsed Time

For example, assuming that the current time is 4200 ms, since the data index "0" shown in FIG. 4 has event occurrence status information "0" and the retransmission limit time (200 ms) is shorter than the elapsed time (4200 ms-3900 ms), The elevator signal for the data index " 0 " In the preferred embodiment of the present invention, as shown in Fig. 4, the result of the priority determination and the priority determination in the data selection unit 15 results in, for example, two identical transmission priorities "2" (data index "0"). "And" 2 "), the detailed transmission priority is determined according to the retransmission limit time. That is, the elevator signal for data index "0" with a shorter retransmission limit time has a transmission priority that is earlier than the elevator signal for data index "2".

Finally, all elevator signals for data indexes whose transmission priorities are not determined as "1" and "2" are all determined to have a transmission priority of "3".

The priority determination and data selection unit 15 of the present invention determines the transmission priority for all data indexes of the data information table 11, stores the determined transmission priority information in the transmission priority field, and then determines the transmission priority. Selects the data to be transmitted. That is, the priority determination and data selection unit 15 sequentially checks transmission priority information from the data indexes "0" to "DN-1" to determine the transmission priorities "1", "2", and "3". Select the data to be transmitted in order. In addition, the priority determination and data selection section 15 stores information stored in the previous transmission time field and the previous value field of the data information table 11 for use in the transmission priority determination and data selection process in the next period; The data value is updated with the current time value and the current value for the selected data index as described above.

Finally, the priority determination and data selection unit 15 sets the selection state information of the data index selected as data to be transmitted among the selection state information stored in the selection state field of the data information table 11 according to the determined transmission priority. Change from "to" 1 ". By changing this, it is possible to prevent the already selected data index from being reselected when selecting the data having the next priority transmission priority value. The priority determination and data selection unit 15 repeatedly performs the above-described operation until all the predetermined number of data are processed. In addition, as described in the prior art, the priority determining and data selecting unit 15 of the present invention checks the data to be transmitted by checking from the next data index of the data index last selected in the previous period when selecting data to be transmitted in the next period. Choose. If all of the operations of the priority determination and data selection unit 15 are terminated within the preset data transmission period, the priority determination and data selection unit 15 determines the event occurrence status field and transmission priority field of the data information table 11. And all the values of the, and selection status fields are reset to "0", and the data information table 11 stores information on elevator signals newly received from the main control unit after a predetermined period.

As described in the prior art, the data record transmitter 17 receives the data selected by the priority determination and data selector 15 to generate a data record and transmits the data record to the elevator group control system. At this time, when data having the same transmission priority values "1" and "2" among the data selected by the priority determination and data selection unit 15 exist, the data is transmitted in the order of shortest event transmission period and retransmission limit time. You can sort the to create a data record.

As described above, according to the present invention, by determining the transmission priority based on the characteristics of each elevator signal and transmitting data according to the determined transmission priority, it is possible to increase the data transmission efficiency. For example, even if the elevator car speed signal occurs as event data ten times within a preset transmission period of the data record, assuming that the preset event transmission period of the elevator car speed signal is 100 ms, the elevator car speed signal is once every 100 ms. Is sent. As a result, since another elevator signal can be stored and transmitted in the storage space occupied by the elevator car speed signal in the data record, data transmission efficiency can be improved.

In addition, by transmitting the data index by determining the transmission priority based on the preset retransmission limit time of the elevator signal, it is possible to reduce the signal recovery time due to transmission error of the data record. For example, an elevator car call assignment signal requires only one event to occur before the call is serviced and a long time before the event occurs again. In such a case, if the retransmission limit time of the elevator car speed signal is set to 2000 ms and the retransmission limit time of the elevator car call assignment signal is set to 200 ms, even if a data record transmission error occurs, the elevator car call assignment signal is set within 200 ms. It is retransmitted by the data record so that it can be recovered within a short time compared to the elevator car speed signal.

 According to the present invention, data transmission efficiency can be greatly improved by determining the transmission priority according to the characteristics of the signal such as an event transmission period and a retransmission limit time for the elevator signal and transmitting the data.

In addition, by determining the priority based on the preset retransmission limit time for each elevator signal and transmitting the data, it is possible to effectively reduce the recovery time due to the transmission error of the data.

It is to be understood that the above described embodiments are merely illustrative of some of the various embodiments employing the principles of the present invention. It will be apparent to those skilled in the art that various modifications may be made without departing from the spirit of the invention.

Claims (14)

As an elevator signal transmission device, A data information table for storing information on characteristics of a plurality of elevator signals indicating an operation state of an elevator, On the basis of the characteristic information of the plurality of elevator signals, by comparing the current value and the previous value of the elevator signal to check whether each of the plurality of elevator signal occurrence of the event indicating the difference between the current value and the previous value Event occurrence inspection unit for Priority determination and data for determining transmission priority of the plurality of elevator signals based on the characteristic information of the plurality of elevator signals and a result of the event occurrence check and selecting information on elevator signals according to the transmission priorities. Selection, and A data record transmitter for generating a data record using the selected information and transmitting the generated data record Elevator signal transmission device comprising a. The method of claim 1, Property information for each of the plurality of elevator signals, A data index indicating each elevator signal, a preset event transmission period of each elevator signal, a retransmission limit time for controlling retransmission of each elevator signal, a current value of each elevator signal, each elevator A previous value of a signal, a previous transmission time of each elevator signal, an information value indicating whether an event of each elevator signal has occurred, a transmission priority information value of each elevator signal, and an elevator corresponding to the transmission priority Elevator signal transmission device comprising information indicating whether the information on the signal is selected. The method of claim 1, And the data record transmitter further stores additional information in the data record, and transmits the generated data record based on the additional information. The method of claim 3, wherein The selected information includes a data index and a current value of each elevator signal, and the additional information includes a number of elevator signals stored in the data record and a destination index of the data record. delete The method of claim 1, wherein the priority determination and data selection unit, If each elevator signal has an event and the event transmission period of each elevator signal is less than a value obtained by subtracting a previous transmission time from the current time of each elevator signal, the transmission priority of each elevator signal is " 1 ". Decided to " The transmission priority of each elevator signal is changed if the respective elevator signal has not occurred in an event and the retransmission limit time of each elevator signal is less than the subtracted previous transmission time from the current time of each elevator signal. 2 ", Determine the transmission priority of each elevator signal not determined as any one of the transmission priorities " 1 " and " 2 " And said current time is defined as the transmission time of said data record. The method of claim 6, wherein the priority determination and data selection unit, Among the elevator signals having the same transmission priority "1", the elevator signal with the shorter event transmission period has a higher priority, An elevator signal transmitting apparatus, wherein an elevator signal having a shorter retransmission limit time has a higher priority among a plurality of elevator signals having the same transmission priority "2". As an elevator signal transmission method, Storing information about characteristics of a plurality of elevator signals indicating an operation state of the elevator, On the basis of the characteristic information of the plurality of elevator signals, by comparing the current value and the previous value of the elevator signal to check for each occurrence of the event indicating the occurrence of the difference between the current value and the previous value for each of the plurality of elevator signals step, Determining the transmission priority of the plurality of elevator signals based on the characteristic information of the plurality of elevator signals and the event occurrence test result, and selecting information on the elevator signals according to the transmission priorities; and Generating a data record using the selected information and transmitting the generated data record Elevator signal transmission method comprising a. The method of claim 8, Property information for each of the plurality of elevator signals, A data index indicating each elevator signal, a preset event transmission period of each elevator signal, a retransmission limit time for controlling retransmission of each elevator signal, a current value of each elevator signal, each elevator A previous value of a signal, a previous transmission time of each elevator signal, an information value indicating whether an event of each elevator signal has occurred, a transmission priority information value of each elevator signal, and an elevator corresponding to the transmission priority Elevator signal transmission method comprising information indicating whether the information on the signal is selected. The method of claim 8, The data record transmitting step further stores additional information in the data record and transmits the generated data record based on the additional information. 11. The method of claim 10, The selected information includes a data index and a current value of each elevator signal, and the additional information includes the number of elevator signals stored in the data record and a destination index of the data record. delete The method of claim 8, wherein the prioritization and data selection step, If each elevator signal has an event and the event transmission period of each elevator signal is less than a value obtained by subtracting a previous transmission time from the current time of each elevator signal, the transmission priority of each elevator signal is " 1 ". Decided to " The transmission priority of each elevator signal is changed if the respective elevator signal has not occurred in an event and the retransmission limit time of each elevator signal is less than the subtracted previous transmission time from the current time of each elevator signal. 2 ", Determine the transmission priority of each elevator signal not determined as any one of the transmission priorities " 1 " and " 2 " And said current time is defined as the transmission time of said data record. The method of claim 13, wherein the prioritization and data selection step, Among the elevator signals having the same transmission priority "1", the elevator signal with the shorter event transmission period has a higher priority, An elevator signal transmission method, wherein an elevator signal having a shorter retransmission limit time has a higher priority among a plurality of elevator signals having the same transmission priority "2".

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