JP2014146195A - Data communication system, data transmission device, data reception device, and data communication method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve higher efficiency of data transmission by transmitting and receiving a large quantity of data using one code.SOLUTION: A data communication system includes a data transmission device and a data reception device. The data transmission device includes: storage means which stores code definition information in which a code of a prime number is uniquely defined for each data set including one or more pieces of data; and transmission means which, when transmitting a plurality of data sets, generates transmission data including a multiplication value resulting from multiplication of codes of prime numbers defined for respective data sets and the plurality of data sets and transmits the transmission data. The data reception device includes: storage means which stores the code definition information; and reception means which, when receiving transmission data, divides the multiplication value included in the transmission data by the code of prime number defined for each data set included in the transmission data and identifies code defined for each data set included in the transmission data on the basis of the division value.

Description

  The present invention relates to a data communication system, a data transmission device, a data reception device, and a data communication method.

  Conventionally, in a system using high-speed communication such as a Web system, the transmission side transmits data including attributes such as the data type of data using XML (eXtensible Markup Language) or a unique format. Therefore, on the receiving side, it is possible to determine the data type of the data based on the received attributes together with the received data.

  However, when low-speed communication is used, there is a problem that data transmission / reception including attributes such as the data type of data requires a lot of transmission time and cannot receive data changes accurately.

  Therefore, even when using low-speed communication, a code that defines the attributes of the data to be transmitted and received is determined in advance so that the necessary data can be transmitted and received in a short time. Send. On the receiving side, the received data is converted into attributes with a common code, and then data processing is performed.

  FIG. 1 shows an example (part 1) for explaining a data transmission method. For example, as illustrated in FIG. 1, the device 1 transmits data obtained by adding “code A” to “data a” of the sensor a measured by the device 1 to the information collection device 2. When the information collection device 2 receives data from the device 1, the first “data a” added to the “code A” is measured by the “sensor a of the device 1” based on a predetermined code attribute table. Data processing is performed after recognizing that the data has been processed.

  As a technique related to this, for example, Patent Literature 1 describes a measurement data communication device that transmits and receives data by associating measurement data of a plurality of measurement items with one code value for each measurement device.

JP 2008-117238 A

  Here, in the case of a device that individually has a function of measuring each measurement data such as temperature and electric power and manages them in combination, even if the above-described conventional technology is applied, a code corresponding to each measurement data is provided. Many will be sent.

  FIG. 2 shows an example (part 2) for explaining the data transmission method. For example, in FIG. 2, the module 1-1 of the device 1 measures “data a” and “data b” of the sensors a and b, and the module 1-2 measures “data c” of the sensor c. Thus, when the configuration change with or without the module is possible, the device 1 separately manages the data measured by the module 1-1 and the data measured by the module 1-2. That is, since the device 1 handles data for each module, the data to be transmitted to the information collecting device 2 is also handled as two pieces of transmission data.

  For example, the device 1 having the module 1-1 and the module 1-2 adds “code A” to “data a” and “data b” and adds “code B” to “data c”. As a result, the data is transmitted to the information collecting device 2. In the case of a configuration without the module 1-2, the device 1 transmits only the data of the module 1-1 by adding “code A” to “data a” and “data b”.

  As described above, in the case of a device capable of changing the configuration of the function (module) for measuring each measurement data, it is necessary to add at least one “code” for each function (module). For example, in the case of FIG. 2, it is necessary to add two codes “code A” and “code B” to the data transmitted from the device 1. For this reason, there is still room for improvement from the viewpoint of shortening the transmission time and increasing the efficiency of data transmission, such as when using low-speed communication.

  In view of the above points, an object of the embodiment of the present invention is to provide a data communication system or the like that transmits and receives a large number of data using a single code to improve the efficiency of data transmission.

  A data communication system according to an aspect of the present invention is a data communication system including a data transmission device and a data reception device, and the data transmission device has a unique prime code for each data set including one or more data. Storage means that stores defined code definition information, and when transmitting a plurality of data sets, generates a transmission data including a multiplication value obtained by multiplying a prime code defined for each data set and a plurality of data sets And transmitting means for transmitting the transmission data, the data receiving device storing the code definition information, and when receiving the transmission data, the data receiving device transmits the multiplication value included in the transmission data to the transmission data. Receiving means for dividing by a prime code defined for each data set included in the data and identifying the code defined for each data set included in the transmission data based on the division value Equipped with a.

  According to another aspect of the present invention, there is provided a data transmission apparatus that transmits, for each data set including one or more data, storage means storing code definition information in which a prime code is uniquely defined, and a plurality of data sets. A transmission unit that generates transmission data including a multiplication value obtained by multiplying a prime code defined for each data set and a plurality of data sets, and transmits the transmission data.

  According to another aspect of the present invention, there is provided a data receiving apparatus that receives, for each data set including one or more data, storage means that stores code definition information in which a prime code is uniquely defined, and the transmission data. The multiplication value included in the transmission data is divided by a code of a prime number defined for each data set included in the transmission data, and is defined for each data set included in the transmission data based on the division value. Receiving means for identifying the received code.

  A data communication method according to another aspect of the present invention is a data communication method between a data transmission device and a data reception device, wherein the data transmission device has a prime code for each data set including one or more data. A procedure for reading the uniquely defined code definition information from the storage means, and when transmitting a plurality of data sets, includes a multiplication value obtained by multiplying a prime code defined for each data set, and a plurality of data sets A procedure for generating transmission data and transmitting the transmission data, and the data receiving device includes a procedure for reading the code definition information from the storage means and the transmission data when the transmission data is received. The multiplication value is divided by a prime code defined for each data set included in the transmission data, and the code defined for each data set included in the transmission data is identified based on the division value. And a that procedure.

  According to the disclosed technology, the efficiency of data transmission can be improved.

The figure explaining the data transmission method (the 1). FIG. 2 is a diagram for explaining a data transmission method (part 2); The figure which shows an example of a system configuration. The figure which shows an example of transmission data. The figure which shows an example of the hardware constitutions of the apparatus 1 and the information collection device. The figure which shows an example of a system configuration. The flowchart figure explaining the data transmission process of the apparatus 1. FIG. The figure explaining the transmission data generation of the apparatus 1. FIG. The flowchart figure explaining the data reception and analysis process of the information collection device. The figure explaining the data analysis of the information collection device. The figure which shows an example of the system configuration | structure in a modification. The flowchart figure explaining the data reception and analysis process of the information collection device 2 in a modification.

  Hereinafter, embodiments for solving the above problems will be described with reference to the accompanying drawings.

[Example]
<System configuration>
FIG. 3 is a diagram illustrating an example of a system configuration in the embodiment. In the data communication system shown in FIG. 1, a device 1 and an information collection device 2 are connected via a network 3.

(Equipment 1)
The device 1 is connected to each sensor that measures a measurement target, and transmits measured data (for example, temperature and power) to the information collection device 2. For this reason, the device 1 includes the module 1-1 and the module 1-2, the communication unit 11, and the storage unit 12.

  Modules 1-1 and 1-2 are modules that are connected to each sensor and that acquire and manage data measured by each sensor. In this embodiment, it is assumed that the sensor a and the sensor b are connected to the module 1-1 and the sensor c is connected to the module 1-2 as shown in FIG.

  In addition, the device 1 according to the present embodiment can be configured to change the presence or absence of a module. Therefore, when the device 1 includes the module 1-1 and the module 1-2, the data measured by the module 1-1 and the data measured by the module 1-2 are managed separately. That is, since the device 1 handles data for each module, the data to be transmitted to the information collecting device 2 is also handled as two pieces of transmission data.

  The communication unit 11 transmits data measured by each sensor to the information collection device 2. Specifically, the communication unit 11 transmits “data a” measured by the sensor a, “data b” measured by the sensor b, and “data c” measured by the sensor c to the information collecting apparatus 2. The communication unit 11 performs data transmission according to the code attribute table of the storage unit 12 when transmitting data to the information collection device 2 (details will be described later).

  The storage unit 12 stores a code attribute table. The code attribute table is defined (specified) in association with “code” to be added to data, “order” in which data is transmitted, “data attribute” of data, and the like, and the communication unit 11 collects information. It is used when data is transmitted to the device 2 (details will be described later).

(Information collection device 2)
The information collection device 2 collects various data by receiving data measured by each sensor from the device 1, and processes the collected data. For this reason, the information collection device 2 includes a communication unit 21 and a storage unit 22.

  The communication unit 21 receives data measured by each sensor from the device 1. Specifically, the communication unit 21 receives a predetermined code, “data a” measured by the sensor a, “data b” measured by the sensor b, and “data c” measured by the sensor c. The included transmission data is received from the device 1. When the communication unit 21 receives data from the device 1, the communication unit 21 analyzes the received data according to the received predetermined code and the code attribute table of the storage unit 22 (details will be described later). When the received data is analyzed, “data a”, “data b”, and “data c” can be acquired from the received data. Each acquired data can be used, for example, for monitoring and management of a device to be measured.

  The storage unit 22 stores a code attribute table. The code attribute table is information used for data transmission / reception. Since the data transmitting side and the receiving side need to transmit and receive data according to the same rules, the code attribute table in the storage unit 22 is the same code attribute table as that stored in the storage unit 12 of the device 1. Is memorized.

  The information collecting apparatus 2 is connected not only to the device 1 but also to a plurality of devices, and can collect data measured by each device from the connected devices. In this case, the information collection device 2 includes all the code attribute tables included in each of the connected devices in the code attribute table of the storage unit 22.

  In the present embodiment, measurement data measured by each sensor is targeted as an example of data, but is not limited to measurement data and may include other information. For example, in the case of a device such as a vending machine, data such as sales sales can be handled as transmission data.

(Code attribute table)
The code attribute table will be described with reference to FIG. 3 again. The code attribute table is code attribute information defined (defined) in association with “code” to be added to data, “order” in which data is transmitted, “data attribute” of data, and the like.

  The “code” is information that becomes a key for finally specifying the “data attribute” at the time of data analysis on the data receiving side. Here, the code value of the present embodiment is a prime number that does not overlap with other codes. A prime number refers to an integer that is a number other than 1 and that has only a divisor of 1 and itself. Therefore, for example, a value such as 2, 3, 5, 7,... Is used as the “code”.

  A “code” is assigned to each of one or more data sets (data group). Specifically, a set (a group of data) is assigned to each piece of data handled by the same module in units of modules that can be changed in configuration such as addition or deletion.

  For example, in the case of FIG. 3, the code α is a code given to the module 1-1 of the device 1. The module 1-1 acquires “data a” and “data b” measured by the sensors a and b. Therefore, the code α is assigned to “data a” and “data b” acquired by the module 1-1 (“data a” and “data b” belong to a group called code α).

  The code β is a code given to the module 1-2 of the device 1. The module 1-2 acquires “data c” measured by the sensor c. Therefore, the code β is assigned to “data c” acquired by the module 1-2 (“data c” belongs to a group called code β).

  “Order” is defined for each piece of data belonging to the same code, and indicates the order in which the data is arranged. When the device 1 generates transmission data, the device 1 arranges a plurality of data measured by each sensor according to the “order”.

  “Data attribute” indicates an attribute of the data, such as information on a sensor that has generated the data. This “data attribute” identifies what kind of data the data is. The “data attribute” only needs to indicate the attribute of the data. For example, in addition to the information on the sensor that generated the data, information such as the name of the device to be measured and the data type (temperature, power, etc.) of the measurement target is stored according to the data processing application on the information collection device 2 May be.

(Transmission data)
FIG. 4 is a diagram illustrating an example of transmission data in the embodiment. When transmitting data measured by each sensor, the device 1 generates transmission data for transmission based on the code attribute table, and transmits the generated transmission data to the information collection device 2. Specifically, the transmission data in the embodiment is composed of one code part and one or more data parts.

  The code part is a code storage area added to, for example, the previous position of the subsequent data part. The code part stores a multiplication value γ of codes (but not prime numbers) assigned to all data in the data part. For example, when the code α = 2 and the code β = 3, the multiplication value γ = 6 is stored.

  Note that the number of code portions is one regardless of the number of subsequent data sets and data. In other words, if the code part area capacity of one transmission data is, for example, 1 byte, no matter how many sets of data and the number of data follow, or how much capacity it will be. The code part area capacity of one piece of transmission data is always 1 byte.

  Note that when there are two data sets, there are two code parts of one transmission data (see, for example, FIG. 2).

  The data part is an actual part of data transmitted from the device 1 to the information collection device 2. For example, it corresponds to “data a”, “data b”, and “data c” to be transmitted to the information collection device 2.

(hardware)
FIG. 5 is a diagram illustrating an example of a hardware configuration of the device 1 and the information collection device 2 in the embodiment. The device 1 and the information collection device 2 include a CPU 101, a ROM 102, a RAM 103, an HDD 104, an interface 105, an input device 106, a display device 107, and a communication device 108 as main components.

  The CPU 101 is composed of a microprocessor and its peripheral circuits, and is a circuit that controls the entire apparatus. The ROM 102 is a memory that stores a predetermined control program executed by the CPU 101. The RAM 103 is a memory used as a work area when the CPU 101 executes a predetermined control program stored in the ROM 102 to perform various controls.

  The HDD 104 is a device that stores various information including a general-purpose OS and various programs, and is a nonvolatile storage device.

  The interface 105 is an interface for connecting to an external device such as a sensor.

  The input device 106 is a device for the user to perform various input operations. The input device 106 includes a mouse, a keyboard, a touch panel switch provided so as to be superimposed on the display screen of the display device 107, and the like.

  The display device 107 is a device that displays various data on a display screen. For example, it is composed of LCD (Liquid Crystal Display), CRT (Cathode Ray Tube) and the like.

  The communication device 108 is a device that communicates with other devices via the network 3. Supports communication according to various network forms including wired and wireless networks.

<Data transmission / reception processing>
FIG. 6 is a diagram illustrating an example of a system configuration in the embodiment. Data transmission / reception processing of the device 1 and the information collection device 2 will be described in detail below.

  The device 1 has “data a” measured by the sensor a, “data b” measured by the sensor b, “data c” measured by the sensor c, and “code part” according to the code attribute table of the storage unit 12. ”Is generated, and the generated transmission data is transmitted to the information collection device 2.

  On the other hand, the information collection device 2 receives transmission data including “data a”, “data b”, “data c”, and “code part” from the device 1. Further, the information collection device 2 analyzes the transmission data from the device 1 according to the code attribute table of the storage unit 22 and the information of the “code part” included in the transmission data. When the transmission data from the device 1 is analyzed, “data a”, “data b”, and “data c” can be acquired in an identifiable manner.

(Data transmission processing of device 1)
FIG. 7 is a flowchart for explaining data transmission processing of the device 1. FIG. 8 is a diagram for explaining transmission data generation of the device 1. When the communication unit 11 of the device 1 acquires “data a”, “data b”, and “data c”, it generates transmission data to be transmitted to the information collection device 2. This will be described in detail below.

  S1: The communication unit 11 first sets 1 to a code γ to be stored in the code unit (γ = 1).

  S2: The communication unit 11 refers to the code attribute table and sets the first (first line) “code” to the current code δ. For example, in FIG. 6, the code attribute table in the storage unit 12 is referred to. The first “code” is “2”. In this case, the current code δ = 2 is set.

  S3: The communication unit 11 determines whether the current code δ is valid. Specifically, it is determined whether or not the current code δ is a prime number. This is because the code according to the present embodiment needs to be a prime number as described above.

  S4: The communication unit 11 multiplies the current code δ by the code γ and updates the code γ (γ ← γ × δ). For example, when δ = 2 and γ = 1, the code is updated as γ = 2 × 1 = 2.

  S5: The communication unit 11 arranges all the data corresponding to the “data attribute” of the current code δ along the “order”.

  In FIG. 6, the code attribute table of the storage unit 12 is referred again. In the case of the current code δ = 2, the “data attribute” of the current code 2 is “sensor a of device 1” and “sensor b of device 1”. Therefore, “data a” corresponding to “sensor a of device 1” and “data b” corresponding to “sensor b of device 1” are arranged in “order”. The “order” of “data a” corresponding to “sensor a of device 1” is the first term, and the “order” of “data b” corresponding to “sensor b of device 1” is the second term. For this reason, data is arranged in the order of “data a” and “data b” (for example, refer to 802 in FIG. 8).

  S6: The communication unit 11 determines whether the current code δ is the end of the code attribute table. In FIG. 6, the code attribute table of the storage unit 12 is referred again. If the current code δ = 2, the current code 2 is not the end of the code attribute table. This is because the current code 3 further exists in the code attribute table.

  S7: The communication unit 11 reads the next “code” in the code attribute table as the current code δ. In FIG. 6, when referring to the code attribute table of the storage unit 12, the current code δ = 3 is read as the code next to the current code 2.

  Thereafter, the communication unit 11 returns to S3 again and determines whether or not the current code δ = 3 is valid.

  In S4, the current code δ is multiplied by the code γ to update the code γ. Here, since δ = 3 and γ = 2, the code γ = 3 × 2 = 6 is updated.

  In S5, the communication unit 11 arranges all the data corresponding to the “data attribute” of the current code δ in the “order”. When the current code δ = 3, the “data attribute” of the current code 3 is “the sensor c of the device 1”. Therefore, “data c” corresponding to “sensor c of device 1” is arranged in “order” (see, for example, 803 in FIG. 8).

  In S6, the communication unit 11 determines whether the current code δ is the end of the code attribute table. If the current code δ = 3, the current code 3 is the end of the code attribute table. Therefore, it progresses to S8.

  S8: The communication unit 11 stores the code γ in the code part. Here, since the code γ = 6, 6 is stored in the code part of the transmission data (see, for example, 804 in FIG. 8). Thus, transmission data is generated.

  S9: The communication unit 11 transmits the generated transmission data to the transmission destination (for example, the information collection device 2).

(Data reception / analysis processing of the information collection device 2)
FIG. 9 is a flowchart for explaining data reception / analysis processing of the information collection device 2. FIG. 10 is a diagram for explaining data analysis of the information collection device 2. The information collection device 2 receives transmission data from the device 1 and analyzes the received transmission data. This will be described in detail below.

  S11: The communication unit 21 receives transmission data (hereinafter referred to as reception data) transmitted from the device 1. Here, the received data is assumed to be 1001 in FIG. 10 (= 804 in FIG. 8).

  S12: The communication unit 21 acquires the code γ of the code part from the received data. For example, 6 is acquired as the code γ (see, for example, 1001 in FIG. 10).

  S13: The communication unit 21 sets the data pointer to the next address of the code part of the received data (see, for example, 1002 in FIG. 10).

  S14: The communication unit 21 sets the code at the head (first line) of the code attribute table to the current code δ. For example, in FIG. 6, the code attribute table of the storage unit 22 is referred to. The first “code” is “2”. In this case, the current code δ = 2 is set.

  S15: The communication unit 21 calculates the “quotient” and the “remainder (remainder)” by dividing the code γ by the current code δ. For example, when γ = 6 and δ = 2, 6 ÷ 2 = 3, so that “quotient” is 3 and the remainder is 0.

  S16: In S15, the process branches depending on whether there is a remainder. When there is no remainder (when remainder = 0), the process proceeds to S17.

  S17: The communication unit 21 acquires data corresponding to the number of “data attributes” belonging to the same code as the current code δ in association with the “data attributes” in the code attribute table using the data pointer as a base point.

  For example, in FIG. 6, the code attribute table of the storage unit 22 is referred to. In this code attribute table, “data attributes” belonging to the same code as the current code 2 are “sensor a of device 1” and “sensor b of device 1”. Thus, since the number of “data attributes” is two, “data a” and “data b”, which are two pieces of data, are associated with the respective “data attributes” using the data pointer as a base point. Get. That is, “sensor a of device 1”: “data a” and “sensor b of device 1”: “data b” are acquired (see, for example, 1003 and 1004 in FIG. 10).

  S18: The communication unit 21 adds the data pointer by the number of “data attributes”. In the case of S17, since the number of “data attributes” is two, two data pointers are added and moved by two (for example, see 1005 in FIG. 10).

  S19: The communication unit 21 sets the “quotient” calculated in S15 to the code γ (γ ← quotient). For example, when “quotient” is 3, γ = 3.

  S20: The communication unit 21 determines whether the current code δ is the end of the code attribute table. In FIG. 6, referring to the code attribute table in the storage unit 22 again, if the current code δ = 2, the current code 2 is not the end of the code attribute table. This is because the current code 3 further exists in the code attribute table.

  S21: The communication unit 21 reads the next “code” in the code attribute table as the current code δ. In FIG. 6, when referring to the code attribute table of the storage unit 22, the current code δ = 3 is read as the code next to the current code 2.

  Thereafter, the communication unit 21 returns to S15 again, and divides the code γ by the current code δ to calculate “quotient” and “remainder (remainder)”. For example, when γ = 3 and δ = 3, 3 ÷ 3 = 1, and “quotient” is calculated as 1 and remainder 0.

  In S16, the process branches depending on whether there is a remainder. When there is no remainder (when remainder = 0), the process proceeds to S17.

  In S17, the communication unit 21 acquires data corresponding to the number of “data attributes” belonging to the same code as the current code δ in the code attribute table in association with the “data attributes” using the data pointer as a base point.

  For example, in FIG. 6, the code attribute table of the storage unit 22 is referred to. In this code attribute table, the “data attribute” belonging to the same code as the current code 3 is “sensor c of device 1”. Accordingly, since the number of “data attributes” is one, “data c” that is one piece of data is acquired in association with “data attributes” using the data pointer as a base point. That is, “sensor c of device 1”: “data c” is acquired (see, for example, 1006 and 1007 in FIG. 10).

  Thereafter, the process proceeds to S20 via S18 and 19. The communication unit 21 determines whether the current code δ is the end of the code attribute table. In FIG. 6, referring to the code attribute table in the storage unit 22 again, if the current code δ = 3, the current code 3 is the end of the code attribute table. Therefore, the process proceeds to “END”.

(Summary)
Through the data reception process described above, “data a”, “data b”, and “data c” can be acquired from the transmission data transmitted from the device 1. Further, based on one code part (γ) added to the head of the transmission data, “data a”, “data b”, and “data c” are set to “sensor a of device 1” of “data attribute”, respectively. , “Sensor b of device 1” and “sensor c of device 1”. That is, the information collecting device 2 on the receiving side uses the information of one code part (γ) added to the transmission data, and “data a” is data of “sensor a of device 1”, and “data b”. Is data of “sensor b of device 1”, and “data c” can be identified as data of “sensor c of device 1”.

  The transmission data from the device 1 includes a plurality of sets (and a plurality of data in the set) such as a set of data managed by the module 1-1 and a set of data managed by the module 1-2. Included. However, by using prime numbers in the code, the code that needs to be added for each module (for each data set) in the past (for example, see FIG. 2) is used regardless of the number of sets. Can be combined into one code. A prime number is an integer that is a number other than 1 and is only a divisor of itself. If the code is divided on the receiving side, it is expanded into a plurality of codes, and the code for each module (each data set) is uniquely assigned. This is because it can be identified.

  Therefore, the transmission data according to the present embodiment has only one code added to the head of the transmission data, and the receiving side can identify each code assigned to each data set. Further, since the information of “order” and “data attribute” is defined for each data, it is possible to identify the “data attribute” for each piece of data in the set.

  As described above, according to the present embodiment, it is possible to improve the efficiency of data transmission / reception even when a large amount of data is transmitted.

<Modification>
FIG. 11 is a diagram illustrating an example of a system configuration according to the modification. Compared to FIG. 6, a device 1-2 connected to the device 1 and a sensor d connected to the device 1-2 are added. Rather than the device 1 and the device 1-2 each transmitting data to the information collecting device 2 as in this configuration, the information collecting device 2 uses the “data d” measured by the sensor d of the device 1-2. In some cases, it is more convenient in terms of processing to be received as transmission data of the device 1.

  In this case, as described in the above-described embodiment, the device 1 assigns a code to the module 2-1 of the device 1-2, and assigns a code to the module 1-1 of the device 1 to the module 1-2 of the device 1. The assigned code and the multiplication value (γ) of the code assigned to the module 2-1 of the device 1-2 are stored in the code part. And the apparatus 1 should just produce | generate the transmission data which arranged "data a", "data b", "data c", and "data d" after a code part.

  However, as the number of modules increases, the number of codes to be incorporated in multiplication increases, and the value of the multiplication value (γ) stored in the code portion increases. On the other hand, the storage area capacity of the code part is usually constant. For example, if the storage area capacity is 1 byte, it may not be stored depending on the multiplication value (γ).

  Therefore, in this modification, the limit of the storage area capacity of the code part is avoided by taking a form in which a specific code calls a new code.

  FIG. 11 is a diagram illustrating an example of a system configuration in the present modification.

  The device 1-2 sets 7 in the code portion based on the code attribute table of its own device, and generates transmission data of “data d” measured by the sensor d. Further, the device 1-2 transmits the generated transmission data to the device 1.

  On the other hand, the device 1 receives transmission data from the device 1-2. For example, the device 1 is defined as data having a code value of 5 (data transmitted from the device 1-2) starting from the code portion. On the device 1 side, data up to the code part, “data a”, “data b”, “data c” is prepared in advance, and the transmission data of the device 1-2 is added after that, and a new code is newly created. Configure transmission data without calculating values.

(Data reception / analysis processing of the information collection device 2)
FIG. 12 is a flowchart for explaining data reception / analysis processing of the information collection device 2 according to the modification. Compared with FIG. 9, S16-2 is newly added. However, since the other steps are the same, redundant description will be omitted.

  S16-2: The communication unit 21 determines whether the “data attribute” of the current code δ is a code. If it is a code (Yes), the process proceeds to “recursion processing”.

  “Recursive processing” means processing for repeating data analysis processing. In the code attribute table, when the “data attribute” of the current code δ is a code, the data analysis process is called again. Specifically, the data analysis process of S12 to S21 in FIG. 12 is executed.

  For example, referring to the code attribute table of the information processing apparatus 2 in FIG. 11, when the current code δ = 5, the “data attribute” of the code 5 is a code. In this case, in S16-2, the process proceeds to Yes, and “recursion processing” is executed.

  As described above, it is defined that data starting from the code part (= transmission data from the device 1-2) comes as data of the code value 5. For this reason, the communication part 21 performs the data analysis process of S12-S21 also to the part corresponded to the transmission data of the apparatus 1-2. Thereby, “data d” measured by the sensor d of the device 1-2 can be acquired.

  Although the embodiments have been described in detail above, the invention is not limited to the specific embodiments, and various modifications and changes can be made within the scope described in the claims. It is also possible to combine all or a plurality of the components of the above-described embodiments.

DESCRIPTION OF SYMBOLS 1 Apparatus 2 Information collection apparatus 3 Network 11 Communication part 12 Storage part 21 Communication part 22 Storage part 101 CPU
102 ROM
103 RAM
104 HDD
105 Interface 106 Input Device 107 Display Device 108 Communication Device

Claims (6)

A data communication system including a data transmission device and a data reception device,
The data transmission device
Storage means for storing code definition information in which a prime code is uniquely defined for each data set including one or more data;
When transmitting a plurality of data sets, transmission means for generating transmission data including a multiplication value obtained by multiplying a prime code defined for each data set and the plurality of data sets and transmitting the transmission data is provided. ,
The data receiving device
Storage means for storing the code definition information;
When the transmission data is received, a multiplication value included in the transmission data is divided by a prime code defined for each data set included in the transmission data, and included in the transmission data based on the division value Receiving means for identifying a code defined for each data set;
A data communication system comprising: In the code definition information, sequence data and data attributes are defined for each data,
The transmission means includes
According to the order information, generating transmission data in which data is arranged,
The receiving means includes
Based on the data arrangement order of the received transmission data and the order information, the data attribute of the data is identified.
The data communication system according to claim 1. In the code definition information, a specific code is defined,
The receiving means includes
When the transmission data is received, the multiplication value included in the transmission data is divided by a prime code defined for each data set included in the transmission data. Call other transmission data specified by the code,
The multiplication value included in the other transmission data is divided by a prime code defined for each data set included in the other transmission data, and based on the division value, for each data set included in the transmission data Identify the defined code,
The data communication system according to claim 1 or 2. Storage means for storing code definition information in which a prime code is uniquely defined for each data set including one or more data;
When transmitting a plurality of data sets, a transmission means for generating transmission data including a multiplication value obtained by multiplying a prime code defined for each data set and a plurality of data sets, and transmitting the transmission data;
A data transmission device comprising: Storage means for storing code definition information in which a prime code is uniquely defined for each data set including one or more data;
When the transmission data is received, a multiplication value included in the transmission data is divided by a prime code defined for each data set included in the transmission data, and included in the transmission data based on the division value Receiving means for identifying a code defined for each data set;
A data receiving apparatus comprising: A data communication method between a data transmitting device and a data receiving device,
The data transmission device
A procedure for reading out code definition information in which a prime code is uniquely defined for each data set including one or more data from a storage unit;
When transmitting a plurality of data sets, a procedure for generating transmission data including a multiplication value obtained by multiplying a prime code defined for each data set and a plurality of data sets and transmitting the transmission data is provided. ,
The data receiving device
A procedure for reading the code definition information from the storage means;
When the transmission data is received, a multiplication value included in the transmission data is divided by a prime code defined for each data set included in the transmission data, and included in the transmission data based on the division value A procedure for identifying codes defined for each data set;
A data communication method comprising:

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