JP3193942B2 - Data collection and transmission equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data collection and transmission device (data collection system) such as a monitoring device and an automatic measurement system.

[0002]

2. Description of the Related Art The configuration of a conventional data collection and transmission device will be described with reference to FIG. FIG. 8 shows, for example, the GPI
It is a functional block diagram of data acquisition by the B protocol, and is a block diagram showing a configuration of a conventional data collection and transmission device.

In FIG. 8, 1 is a data collection device (master), 2 is a multi-drop transmission line (bus), 3 is a data transmission device (slave) connected to the data collection device 1 via the transmission line 2, and 4 is Another data transmission device (slave) also connected to the data collection device 1 via the transmission line 2.

In FIG. 8, reference numeral 5 denotes a transmission control command creation unit, 6 denotes a command data creation unit, 7 denotes a transmission unit, and 8 denotes a reception unit.

[0005] Further, in FIG.
Is a transmission control command processing unit, 11 is a command data processing unit,
Reference numeral 12 denotes a response data creation unit, and reference numeral 13 denotes a response data transmission unit. Note that the data transmission device 4 has the same configuration as the data transmission device 3.

Next, the operation of the conventional data collection and transmission device will be described. The data collection device 1 creates a transmission control command (talker designation, listener designation command) for specifying a data transmission device to which data is desired to be transmitted by the transmission control command creation unit 5, and transmits the transmission control command on the transmission line 2 through the transmission unit 7. Output.

The data transmitting device 3 receives the transmission control command by the receiving unit 9 and analyzes the content by the transmission control command processing unit 10. The data transmission device 3 determines whether data should be transmitted, data should be received, and whether there is no need for processing with a transmission control command for another data transmission device 4, and performs the following operation according to the result.

In the case of a transmission control command to transmit data, response data is created by a response data creation unit 12, transmitted on the transmission line 2 by a response data transmission unit 13, and received by the reception unit 7 of the data collection device 1. Is received by

In the case of a transmission control command to receive data, it is assumed that the command data created by the command data creation unit 6 of the data collection device 1 is input by the transmission unit 7, the transmission line 2, and the reception unit 9. Wait, command data processing unit 11
Performs a predetermined process.

In the case of a transmission control command for another data transmission device 4, the control waits for the input of the next transmission control command.

[0011]

The above-mentioned conventional data collection and transmission apparatus using the GPIB method operates as described above, so that transmission and reception of transmission control commands and processing are performed, so that data transmission is not effectively performed. However, there is a problem that data cannot be collected in a short cycle.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and eliminates transmission of a transmission control command and constantly uses a transmission line for data transmission, thereby enabling data transmission in a short cycle. The purpose is to obtain a transmission device.

[0013]

[0014]

[0015]

Means for Solving the Problems] Data acquisition transmitter according to the inventions, as well as perform data collection, and data acquisition device for outputting to the transmission line to create the command data for controlling respective devices, said transmission A plurality of data transmission devices connected to each other through a line to generate response data and output the data on a transmission line, and perform a predetermined process based on the command data. According to the data collection order data describing the response order of the data collection, and the response order of the data collection described in the data collection order data, the device transmits command data to each data transmission device for each device in accordance with the device identification data. A command data creation unit for creating a command data group compiled in a format including the command data, a transmission unit for transmitting the created command data group to the transmission line, and A response data receiving unit that receives response data on a line, wherein the data transmitting device receives the data on the transmission line, and the received data is command data or transmitted by another data transmitting device. and receiving data classification unit that performs data of the determination, the case where the received data is command data, performs processing of the command data, sometimes absolute response order on what number from the head of the command data set A command data processing unit for recognizing, and, when the received data is transmission data of another data transmission device, determining whether the data is data immediately before the absolute response order and determining the absolute data. A response timing detector that determines the response timing of the own device when the data is one immediately before the response order; and that the response timing of the own device is determined by the response timing detector. In are those having a response data creation unit for creating response data, the response data transmitting unit for transmitting the response data the created to the transmission line.

[0016]

[0017]

[0018]

[0019]

[0020]

[0021]

[0022]

[Action] in the data collection device according to the inventions is, Den
The transmission timing can be recognized without the transmission control command,
The transmission line can be used more efficiently and high-speed data
Collection is possible, and a simpler device configuration is sufficient.

[0023]

[0024]

[0025]

[0026]

[0027]

【Example】

Embodiment 1 FIG. Hereinafter, a configuration of an embodiment of the present invention will be described with reference to FIG. FIG. 1 is a block diagram showing a configuration of a first embodiment of the present invention, in which a transmission line 2, a command data creation unit 6 to a reception unit 8, a reception unit 9, a command data processing unit 1
1 to the response data transmission unit 13 are the same as those of the above-described conventional device. In the drawings, the same reference numerals indicate the same or corresponding parts.

In FIG. 1, a data collection device 1A includes a command data creation section 6, a transmission section 7 for transmitting command data created by the command data creation section 6, and a reception section 8 for receiving collected (response) data. It is composed of

In FIG. 1, the data transmitting device 3A
A reception unit 9, a reception data classification unit 14 for examining the contents of data received by the reception unit 9, a command data processing unit 11 for processing the command data when the divided data is command data, A response timing definition unit 15 in which a relative response order is defined; a response timing detection unit 16 that determines whether or not to transmit response data with reference to the contents of the response timing definition unit 15; Response data creation unit 12 for creating, and response data transmission unit 13 for sending the response data created by response data creation unit 12
It is composed of

Next, the operation of the first embodiment will be described. The data collection device 1A creates command data for data collection and control of each device by the command data creation unit 6, and outputs the command data to the transmission line 2 by the transmission unit 7.

The output command data is received by the receiving section 9 of the data transmitting device 3A. The received data classification unit 14 determines whether the received data is command data or transmission data of another data transmission device 4A. In the case of command data, the command data processing unit 11 performs the corresponding processing.

The result of the determination by the received data classifying unit 14 is compared with the contents of the response timing defining unit 15 by the response timing detecting unit 16. In the response timing definition unit 15, the condition for transmitting the own data is defined by which device the received data is sent from. For example, the response order is defined to be next to the data transmission device 4A. If the collation result of the response timing detection unit 16 matches the condition, that is, if the received data is transmitted from the data transmission device 4A, it is determined that the response timing is the own device's response timing. After the data is created, it is output onto the transmission line 2 by the response data transmitting unit 13. The output response data is
The data is received by the receiving unit 8 of the data collection device 1A.

In the first embodiment, the transmission control command is eliminated, and the data transmitting devices 3A and 4A always receive the data flowing on the transmission line 2, recognize the transmission timing of the own data, and transmit the own data. It is like that. That is, the data transmitting device 3A receives all data flowing on the transmission line 2 by the receiving unit 9, recognizes the device that has just transmitted data from the content thereof, and determines whether or not it is the transmission timing of its own device. By doing so, the transmission timing can be recognized without the transmission control command, data collision on the transmission line 2 can be prevented, and data can be transmitted efficiently. That is, according to the first embodiment, since the transmission control by the transmission control command is eliminated, the use efficiency of the transmission line 2 is increased, and higher-speed data collection becomes possible.

Embodiment 2 FIG. The configuration of the second embodiment of the present invention will be described with reference to FIG. FIG. 2 is a block diagram showing the configuration of the second embodiment of the present invention, except for the data collection order data 17 of the data collection device 1B.
It is similar to that of

In FIG. 2, the data collection device 1B includes a command data creation unit 6, data collection order data 17 describing a data collection response order, and transmission for sending the command data created by the command data creation unit 6. It comprises a unit 7 and a receiving unit 8 for receiving collected data.

In FIG. 2, the data transmitting device 3A
A reception unit 9, a reception data classification unit 14 for examining the contents of data received by the reception unit 9, a command data processing unit 11 for processing the command data when the divided data is command data, A response timing definition unit 15 in which a relative response order is defined; a response timing detection unit 16 that determines whether or not to transmit response data with reference to the contents of the response timing definition unit 15; Response data creation unit 12 for creating, and response data transmission unit 13 for sending the response data created by response data creation unit 12
It is composed of

The data collection and transmission apparatus according to the second embodiment uses the data of the response timing definition unit 15 fixedly provided in each of the data transmission apparatuses 3A and 4A in the first embodiment as command data of the data collection apparatus 1A. Is updated using the data collection order data 17,
The data collection order can be easily changed, and the same effects as in the first embodiment can be obtained.

That is, in the data collection device 1 B, the command data creation unit 6 creates command data for updating the contents of the response timing definition unit 15 using the data collection order data 17 and outputs the command data to the transmission line 2. On the other hand, the data transmission device 3A that has received the command data updates the content of the response timing definition unit 15 by the command data processing unit 11. For example, when the content of the response timing definition unit 15 is defined as being next to the data transmission device 4A,
It is defined to be next to other data transmission devices.

Embodiment 3 FIG. Third Embodiment A third embodiment of the present invention will be described with reference to FIGS. FIG. 3 is a block diagram showing the configuration of the third embodiment of the present invention. The data collection order data 17 of the data collection device 1B and the response timing detection unit 16 also connected to the command data processing unit 11 of the data transmission device 3B. Other than the above, it is the same as that of the first embodiment. FIG. 4 is a diagram showing a format of data transmitted from the data collection device to the data transmission device according to the third embodiment of the present invention.

In FIG. 3, the data collection device 1B includes a command data creation unit 6, data collection order data 17, a transmission unit 7 for sending the command data created by the command data creation unit 6, and a reception of the collected data. And a receiving unit 8.

In FIG. 3, the data transmitting device 3B
A reception unit 9, a reception data classification unit 14 for examining the contents of data received by the reception unit 9, a command data processing unit 11 for processing the command data when the divided data is command data, A response timing detector 16 that determines whether or not to transmit response data based on the order of command data to the own device, a response data generator 12 that generates response data, and a response data generator 12 that generates response data. And a response data transmission unit 13 for transmitting the response data.

The data collection and transmission device according to the third embodiment eliminates the response timing definition unit 15 of the data transmission device according to the first embodiment, and the data collection device 1B transmits command data to each data transmission device to device identification data. FIG.
And sent as a command data group in the form of on the other hand,
The data transmission device 3B analyzes the command data by the command data processing unit 11 and knows the order of the command data to the own device, that is, recognizes the absolute response order from the head of the received command data group. .

The data transmitting apparatus 3B receives all data flowing on the transmission line 2 by the receiving section 9, and recognizes, for example, the apparatus which has performed data transmission by the response timing detecting section 16 from the contents thereof, and Then, it is determined whether or not it is the transmission timing of the own device. As a result, the configuration of the data transmission device 3B can be simplified, and the same effect can be obtained. That is, according to the third embodiment, since the transmission control by the transmission control command is eliminated, the efficiency of use of the transmission line 2 is increased, and higher-speed data collection becomes possible.

Embodiment 4 FIG. Embodiment 4 Embodiment 4 of the present invention will be described with reference to FIG. FIG. 5 is a block diagram showing a configuration of the fourth embodiment of the present invention, and is a data collection device 1B.
Except for the data collection order data 17, the response timing detection unit 16 and the data transmission required time definition unit 18 also connected to the command data processing unit 11 of the data transmission device 3C, the configuration is the same as that of the first embodiment.

In FIG. 5, the data collection device 1B includes a command data creation unit 6, data collection order data 17, a transmission unit 7 for sending the command data created by the command data creation unit 6, and a reception of the collected data. And a receiving unit 8.

In FIG. 5, the data transmitting device 3C
A reception unit 9, a reception data classification unit 14 for examining the contents of data received by the reception unit 9, a command data processing unit 11 for processing the command data when the divided data is command data, A response timing detection unit 16 that determines whether to transmit response data based on the order of command data to the own device, and a data transmission requirement that defines a required time (for example, about 10 ms) for data transmission for one device. It comprises a time definition section 18, a response data creation section 12 for creating response data, and a response data transmission section 13 for transmitting the response data created by the response data creation section 12.

In the data collection and transmission apparatus according to the fourth embodiment, the required data transmission time for one device is determined in the data transmission required time definition unit 18 in the same manner as in the third embodiment. After recognizing this, the response timing detector 16 delays (defined time required) × (transmission order-1) from the time when the command data group is received, and then outputs response data. Thereby, the same effect can be obtained without receiving transmission data from another data transmission device 4C or the like. That is, according to the fourth embodiment, since the transmission control by the transmission control command is eliminated, the use efficiency of the transmission line 2 is increased, and higher-speed data collection becomes possible.

Embodiment 5 FIG. Embodiment 5 of the present invention will be described with reference to FIG. FIG. 6 is a block diagram showing a configuration of the fifth embodiment of the present invention.
The data transmission required time data 19 is the same as that of the fourth embodiment.

In FIG. 6, the data collection device 1C includes a command data creation unit 6, data collection order data 17, data transmission time data 19 describing the time required for data transmission for one device, and command data creation data. It comprises a transmitting unit 7 for transmitting the command data created by the unit 6 and a receiving unit 8 for receiving the collected data.

In FIG. 6, the data transmitting device 3D
A reception unit 9, a reception data classification unit 14 for examining the contents of data received by the reception unit 9, a command data processing unit 11 for processing the command data when the divided data is command data, A response timing detection unit 16 that determines whether to transmit response data based on the order of command data to the own device, and a data transmission requirement that defines a required time (for example, about 10 ms) for data transmission for one device. It comprises a time definition section 18, a response data creation section 12 for creating response data, and a response data transmission section 13 for transmitting the response data created by the response data creation section 12.

The data collection and transmission device according to the fifth embodiment uses the data of the data transmission required time definition unit 18 fixedly provided to each of the data transmission devices 3C and 4C in the fourth embodiment and transmits the data of the data collection device 1C. The command data is updated using the data transmission required time data 19,
The effect of controlling the data collection timing according to the status of the data collection device 1C is obtained. Further, since the transmission control by the transmission control command is eliminated, the use efficiency of the transmission line 2 is increased, and higher-speed data collection becomes possible.

That is, the data collection device 1C creates command data for updating the contents of the data transmission required time defining section 18 using the data transmission required time data 19 by the command data generating section 6, and generates the command data on the transmission line 2. Output. On the other hand, the data transmission device 3D that has received the command data updates the content of the data transmission required time definition unit 18 by the command data processing unit 11.

Embodiment 6 FIG. A sixth embodiment of the present invention will be described with reference to FIG. FIG. 7 is a block diagram showing a configuration of the sixth embodiment of the present invention, and is a data collection device 1D.
Are the same as those of the fifth embodiment except for the clock source 20 of FIG.

In FIG. 7, the data collection device 1D includes a command data creation unit 6, data collection order data 17, data transmission required time data 19, and a transmission for sending the command data created by the command data creation unit 6. It comprises a unit 7, a receiving unit 8 for receiving collected data, and a clock source 20 for outputting clock information.

In FIG. 7, the data transmission device 3E
A reception unit 9, a reception data classification unit 14 for examining the contents of data received by the reception unit 9, a command data processing unit 11 for processing the command data when the divided data is command data, A response timing detection unit 16 connected to the clock source 20 via a transmission line to determine whether to transmit response data based on the order of command data to the own device, and a time required for data transmission for one device ( A data transmission required time defining unit 18 for defining the response data, a response data creating unit 12 for creating response data, and a response data transmitting unit 13 for sending the response data created by the response data creating unit 12. Consists of

The data collection and transmission apparatus according to the sixth embodiment is different from the fourth and fifth embodiments in that the transmission time management is not performed by the internal clock of each data transmission apparatus, but is performed by the data collection apparatus 1D. The response timing detection unit 16 of the data transmission device 3E from the clock source 20 through the transmission line
The clock information is supplied to the data transmission device 3E, so that the internal clock on the data transmission device 3E side is not required, and variations due to individual clocks are eliminated, and stable transmission timing is guaranteed. Further, since the transmission control by the transmission control command is eliminated, the use efficiency of the transmission line 2 is increased, and higher-speed data collection becomes possible.

[0057]

[0058]

[0059]

[Effect of the Invention] According to the data collection device according to the inventions
Recognizes transmission timing without transmission control command
To improve the efficiency of transmission line usage,
Data collection becomes possible and simpler device configuration
No.

[0060]

[0061]

[0062]

[0063]

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a first embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of a second embodiment of the present invention.

FIG. 3 is a block diagram showing a configuration of a third embodiment of the present invention.

FIG. 4 is a diagram showing a data format according to a third embodiment of the present invention.

FIG. 5 is a block diagram showing a configuration of a fourth embodiment of the present invention.

FIG. 6 is a block diagram showing a configuration of a fifth embodiment of the present invention.

FIG. 7 is a block diagram showing a configuration of a sixth embodiment of the present invention.

FIG. 8 is a block diagram illustrating a configuration of a conventional data collection and transmission device.

[Explanation of symbols]

1A, 1B, 1C, 1D data collection device, 2 transmission lines, 3A, 3B, 3C, 3D, 3E data transmission device,
6 command data creation section, 7 transmission section, 8 reception section, 9
Receiving unit, 11 command data processing unit, 12 response data creation unit, 13 response data transmission unit, 14 reception data classification unit, 15 response timing definition unit, 16 response timing detection unit, 17 data collection order data, 18 data transmission required time Definition part, 19 data transmission required time data,
20 Clock source.

Continuation of the front page (56) References JP-A-4-132433 (JP, A) JP-A-3-125533 (JP, A) JP-A-3-88446 (JP, A) JP-A-2-304607 (JP) JP-A-61-220540 (JP, A) JP-A-4-56549 (JP, A) JP-A-5-30212 (JP, A) JP-A-5-114906 (JP, A) (58) Field surveyed (Int. Cl. ⁷ , DB name) H04Q 9/00-9/16 H04L 12/40

Claims (1)

(57) [Claims] 1. A data collection device that collects data and creates command data for controlling each device and outputs the command data to a transmission line. The data collection device is connected through the transmission line, creates response data, and creates response data on the transmission line. A data collection and transmission device comprising: a plurality of data transmission devices that output and perform a predetermined process based on the command data, wherein the data collection device includes data collection order data that describes a data collection response order. Command data for creating a command data group in which command data to each data transmission device is grouped in a format including device identification data for each device in accordance with the data collection response order described in the data collection order data A creating unit, a sending unit that sends the created command data group to the transmission line, and a response data receiving unit that receives response data on the transmission line. The data transmission device includes: a reception unit that receives data on the transmission line; a reception data classification unit that determines whether the received data is command data or transmission data of another data transmission device; When the received data is command data, the command data processing section performs processing of the command data, and in the case of the command data group, a command data processing unit that recognizes an absolute response order at an order from the beginning of the command data group , In the case of transmission data of another data transmission device, it is determined whether the data is data immediately before the absolute response order, and when the data is data immediately before the absolute response order, the own device A response timing detector for determining a response timing, and a response data generator for generating response data when the response timing of the own device is determined by the response timing detector. , Data collection transmission apparatus characterized by having a response data transmitting unit for transmitting the response data the created to the transmission line.