JPH10275165A - Data gathering function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the data gathering function which can gather data on events or measurement data generated at the same time from devices. SOLUTION: The data gathering device which gathers data that instruments generate from devices by a data communication line is equipped with a general measurement control function 2 which temporarily records individual instructions outputted from a central data processor 1 to devices 3A1 to 3An and sends the individual instructions to the devices 3A1 to 3An at a time according to a start command signal sent on the completion of all the individual instructions. In this case, the data communication line is preferably a data communication line conforming with the GPIB specifications.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention can collect data generated simultaneously from each device without any time lag, which is optimal for a data collection function using GPIB for simultaneously collecting data from a plurality of devices. It concerns the data collection function.

[0002]

2. Description of the Related Art In a system constituted by a plurality of devices, data created by each device in a central data processing device, for example, the device is a complex large-sized machine, a chemical processing device, or a testing machine for a complex function. In some cases, a data collection function is provided to monitor the operating state of a machine or a chemical processing apparatus or to collect such measurement data to be measured during a test process. For example, in the case of a test device for an automobile, each of the driving speeds, the fuel consumption state, the exhaust gas components, the output torque, and the like are attached to a dedicated test device under the control of a computer formed as a data processing device. Collecting data. For transmission of measurement commands and measurement data between a data processing device and a device for collecting measurement data, a data transmission system as shown in FIG. 3 is often formed using GPIB.

In FIG. 3, reference numeral 10 denotes a data processing device having a GPIB interface. 30a
, 30ai,..., 30an are unit test devices constituting testers for data generation functions, for example, multifunction, each of which has a GPIB interface and a data processing device. The address corresponding to the communication from 10 is given. The data processor 10 and the unit test equipment 30a1 to 30an are connected to the data transmission lines 10a0, 10a0,
.., 10ai,..., 10an. In the configuration shown in FIG. 3, the data processing device 10 transmits a data transmission command or a measurement command to the unit test devices 30a1 to 30an according to a preset timing or an operation of a person in charge. Unit test equipment 30
a1 to 30an are assigned addresses in advance,
Since this address is indicated in the data transmission command for the unit test equipments 30a1 to 30an, each data transmission command is transmitted without error to the unit test equipments 30a1 to 30an, and the unit test equipments 30a1 to 30an, for example, The obtained data is transmitted to the data processing device 10.

[0004]

By the way, for example, in the case where the above-mentioned equipment is a test apparatus for a car, a specialized company manufactures each of an engine speed, a fuel consumption state, an exhaust gas component, an output torque and the like. Dedicated test equipment (hereinafter abbreviated as equipment) is used. Therefore, the instruction language (code) for instructing each device to start measurement is not the same. Further, depending on the characteristics of the device, the content of the instruction itself may be such as measuring a state at least once after a predetermined time from a predetermined time, or continuously measuring a state at a predetermined time or a predetermined time after a predetermined time from the predetermined time. There may be cases where they are not the same. Therefore, it is not possible to instruct all the devices to start measurement with one command, and the data processing device needs to sequentially transmit commands to the devices with addresses indicating the respective target devices. That is, according to the data collection function of the above-described conventional configuration, each device to be subjected to data collection interprets and executes a command attached to an address indicating the device.

Further, GPIB is a data transmission interface suitable for measurement. However, since a handshake operation is performed between objects to be communicated, a time difference occurs when a command signal is transmitted to each device. For the reasons described above, it has not been possible to collect data created by each device at exactly the same time, for example, measurement values occurring at the same time. For this purpose, for example, in the case of the above-described vehicle test apparatus, it is necessary to measure a state value at the same timing or a predetermined timing related to this timing. Since there are deviations in the respective measurement timings, there is a risk that errors may occur in the analysis results. An object of the present invention is to solve the above-mentioned problems (problems) of a conventional device and to provide a data collection function that enables data of an event occurring at the same time or measurement data to be collected from a plurality of devices. I do.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems (problems), a data collection function of the present invention collects data created by a plurality of devices by a data communication line. , A function to temporarily record individual commands output from the data collection device to each device and simultaneously transmit individual commands to each device based on a start command signal transmitted upon completion of transmission of all individual commands. It is characterized by having an instruction function to have. The data collection function of the present invention temporarily records individual commands output from the data collection device to each device as described above, and based on a start command signal transmitted upon completion of transmission of all individual commands, Has a command function of simultaneously transmitting individual commands to a plurality of devices, so that a plurality of devices receive a predetermined individual command at the same time, and therefore, data of data types created by each device at the same time. Collection is now possible. In this case, if a data communication line formed based on the GPIB specification is used as the data communication line, the handshake operation is appropriately executed at the start of communication.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a test apparatus will be specifically described with reference to the drawings. Therefore, the devices described below measure test data.
FIG. 1 shows a configuration example of a data collection function based on the present invention. In FIG. 1, reference numeral 1 denotes a central data processing device, which includes a CPU, a memory function, an interface for data transmission based on the GPIB specification, and the like;
It has various functions such as data processing, data recording, data display, and data printout including processing results corresponding to the upper system functions of the data collection function.

Reference numeral 2 denotes a simultaneous measurement control function, which is constituted by a CPU, a memory function, and / or a hardware circuit, and has a processing function related to a data transmission command transmitted from a central data processing device 1 which will be described in detail later; GPIB for data transmission formed with the data processing device 1
An interface based on specifications, a simultaneous measurement command function 2A described in detail later, and the like are provided. 1a between the central data processing device 1 and the simultaneous measurement control function 2 is a centralized data transmission line based on the GPIB specification.
The description will be omitted with the term IB omitted). The simultaneous measurement instruction function 2A, a plurality of devices _{3A 1, 3A 2, ···,} 3A i,
., The individual data transmission line 2b connecting between the 3A _n
, 2b2, ..., 2bi, ..., 2bn, individual data transmission terminals 2a1, 2a2, ..., 2ai, ...
・ 2an is provided. Individual data transmission line 2b1 ~
2bn a positional relationship between the apparatus 3A ₁ to 3 A _n, corresponding to the type and nature of data to be its collection, it is sufficient to provide a GPIB other appropriate data communications capabilities. That is,
The data collection function may be a two-way system or a combination of one-way systems. Therefore, the individual data transmission terminal 2a
1 to 2 an may be set corresponding to each data collection function.

Next, a detailed function of the data collection function in the above configuration will be described with reference to FIG. FIG. 2 illustrates a functional configuration of the data collection function. That is, FIG. 1A shows a flow chart of software executed by the central data processing apparatus 1 shown in FIG. 1, and FIG. 2B shows a simultaneous measurement control function 2 mainly including a simultaneous measurement instruction function 2A. Although the functions to be configured are indicated by blocks, the flow and each block do not indicate specific items, but are component elements associated with the necessary specifications of the central data processing device 1 and / or the simultaneous measurement control function 2. What is necessary is just to comprise suitably the function described below according to the kind of kind. For example, except for an interface for performing data transmission with each individual device provided in the simultaneous measurement control function 2, one element element, for example, a recording function described below specifies an address in the same memory. May be used.

Next, the operation of the data collection function according to the present invention will be described with reference to FIGS. FIG. 2 (A)
When a measurement start command is issued to the inside of the central data processing device 1 at a preset timing or by an operation of a person in charge (step 0), the address initialization which is the preset address of the _first device 3A1 is performed. The value A is set in a predetermined address counter (not shown) in the central data processing device 1 (step 1). The central data processing device 1 sets the address initial value A set in the address counter.
, A measurement instruction for the _first device 3A1, which is an individual instruction, is read from a predetermined recording function (not shown) in the central data processing device 1, and a corresponding address is added to the head to perform the simultaneous measurement control function 2. (Step 2). 1 is added to the address counter content value with the above transmission
Is added (step 3), and when the content value of the address counter is smaller than a preset value n (N in step 4).
o), the individual instructions of the appliance indicated by the address counter contents value, i.e., this time measurement instruction to the second device 3A ₂ is read from a predetermined recording function of the central data processing device 1 (not shown), The message is transmitted to the simultaneous measurement control function 2 (step 5). The above operation is made in the address counter contents value n, the measurement command for the n-th device 3A _n is repeated until the calling, when the value A of the address counter is greater than n in (Step 4 Ye
s), the central data processing device 1 sends a simultaneous measurement start command signal to the simultaneous measurement control function 2 (step 6),
The transmission of the measurement command is completed (Step 7). Thereafter, in the central data processing device 1, each device performs measurement according to the command, and executes the processing of the measurement data transmitted from the simultaneous measurement control function 2 according to a preset program. And the description is omitted because it is not directly related to the present invention.

Next, the functional configuration and operation of the simultaneous measurement control function 2 will be described with reference to FIG. In FIG. 2B, the same reference numerals denote the same element functions (devices) as those described with reference to FIG. 1, and a detailed description thereof will be omitted. 1B, reference numeral 1a denotes a centralized data transmission line connecting the central data processing device 1 and the simultaneous measurement control function 2 shown in FIG. 1, and commands transmitted by the centralized data transmission line 1a are simultaneously transmitted. It is received by the input data terminal function 2B of the measurement control function 2. Data transmitted from the simultaneous measurement control function 2 to the central data processing device 1 is transmitted by the output data terminal function 2C. As described above, the input data terminal function 2B and the output data terminal function 2
C indicates an input function and an output function extracted and shown for convenience of description among interfaces based on the GPIB specification, and the respective element functions described below are similarly classified and shown for convenience. In the case of a data transmission line other than GPIB, it is sufficient to appropriately deal with each.

[0012] Input data terminal output function 2B, the address detection function 2E ₁ corresponding to simultaneous measurement start command signal receiver 2D and device _{3A 1 ~3A n, 2E 2,} ···, 2E i,
.., 2E _n and gate functions 2F ₁ , 2F ₂ ,.
2F _i ,..., 2F _n . Gate function 2F
The output of the _{1 ~2F n} is input to the temporary storage function 2G ₁ to 2 g _n, the output of the simultaneous measurement start command signal receiver 2D is entered as simultaneous read signal to the temporary recording function 2G ₁ ~2G _n. The output of the temporary recording function 2G ₁ to 2 g _n are discrete data transmission lines connected to each compatible device 3A ₁ ~3A _n 2b1~2
corresponding to bn are inputted to the output interface functions 2H ₁ through 2h _n corresponding to the individual data transmission terminal 2A1～2an. Incidentally, and FIG. 2 (B) in the illustration convenience, the reference numerals of the corresponding 2a1 only for 2H ₁ shown in parentheses, 2A2～2a
The illustration of the sign of n is omitted.

[0013] Also, measurement output such of the executed device 3A ₁ to 3 A _n according to the measurement instruction each is individual data transmission line 2b
Data is input to the data reduction function 2J by 1 to 2bn.
Data reduction function 2J in accordance with a preset reference measurement data such that has been input in parallel separately from device 3A ₁ to 3 A _n, and a function of converting the serial signal. The data arranged by the data arrangement function 2J is transmitted to the central data processing device 1 via the centralized data transmission line 1a by the output data terminal function 2C. In the above description, instructions such for devices 3A ₁ to 3 A _n is connected from the output interface functions 2H ₁ through 2h _n in the individual data transmission line 2B1～2bn, measurement output such devices 3A ₁ to 3 A _n, respectively of the individual Although the data transmission lines 2b1 to 2bn have been described simply as being input to the data reduction function 2J, the two-way interface function is appropriately configured based on the specification of forming the individual data transmission lines 2b1 to 2bn. a course, be in correspondence with the function, to be transmitted between the respective directions of instructions and measured data simultaneously measure control function over to device 3A ₁ to 3 a _n and the central data processing apparatus 2 Good.

[0014] In FIG. 2 (A), the measurement command for device 3A ₁ to 3 A _n as shown in Step 2 and Step 5 are sequentially received by the broadcast measurement control function 2, for example, address detection function 2E ₁ There open gate function 2F ₁ when detecting the same address value, records the measurement order to continuously input the temporary recording function 2G _1. Similarly, the measurement instruction to continue to the address detected by the address detection function 2E ₂ ~2E _n sequentially by the action of the gate function 2F ₂ ~2F _n each are recorded in the temporary recording function 2G ₂ ~2G _n. Next, in steps 4 and 6 shown in FIG. 2A, when the simultaneous measurement start command signal is transmitted from the central data processing device 1 shown in FIG. 1 and the simultaneous measurement start command signal receiving function 2D detects it. , simultaneous measurement start command signal receiver 2D simultaneously outputs a read instruction of the recording content to the temporary storage function 2G ₁ ~2G _n. Therefore, the temporary recording function 2G ₁ to 2 g _n
Measurement order that has been recorded in the same time, equipment 3A ₁ to 3
It is transmitted to A _n. Measurement data such transmitted instrumentally measured 3A ₁ to 3 A _n sequentially as described above, it is transmitted to the central data processing unit 1. In other words, the central data processing device 1, the measurement data such apparatus 3A ₁ to 3 A _n is transmitted with a time difference, measured data itself is the measured data at the same time.

The present invention is not limited to the embodiment described above. That is, various functions can be modified as follows by applying the above-described technical concept. In the above description, an example in which the present invention is applied to a test apparatus is described. However, the present invention can be applied to a large-sized machine, a chemical processing apparatus, and other various systems. In the above description, each device starts measurement by the simultaneous measurement start command signal.However, considering the difference in the time for each device to decode the command, the simultaneous measurement start command signal is divided into two and the first command is started. Each device may read the instruction recorded in the above step, and start measurement with the next instruction. According to the address detected by the address detection function, each gate function is opened and closed and each measurement instruction is input to the temporary recording function.However, each measurement instruction is provided to each device according to the address detected by the address detection function. You may make it distribute directly to a temporary recording function. Although the centralized data transmission line and the like have been described as being formed based on the GPIB specification, the same technical idea can be applied to the case where a data transmission line not based on the GPIB specification is used. If any or all of the individual data transmission lines are formed by an interface based on the GPIB specification, and there is a possibility that there will be a time difference in the transmission of each measurement start signal due to handshaking, the corresponding devices for data transmission correspond one-to-one. Therefore, it goes without saying that it is easy to configure in advance so that the measurement command can be transmitted to the corresponding device immediately upon receiving the simultaneous measurement start command signal. In the above description, the simultaneous measurement start command signal has been described as including the data transmission command for transmitting the measurement data to the central data processing device, but each device creates data based on the simultaneous measurement start command signal. Then, the data may be temporarily recorded in a predetermined memory and transmitted by a data transmission command separately transmitted from the central data processing device. The above memory may be provided in each device, or may be recorded in a memory provided in the simultaneous measurement control function,
Even if the data is appropriately distributed and recorded, the data is immediately transmitted to the central data processing device after executing the command received based on the simultaneous measurement start command signal in accordance with the type of data measured or created by the device, such as the function of the device and the measured data. May be combined with means for executing transmission in accordance with a data transmission instruction temporarily recorded and transmitted later.

[0016]

According to the data collection function of the present invention, a data transmission command output from the central data processing device to each device is temporarily recorded, and each device is transmitted by a command signal transmitted upon completion of output of all data transmission commands. An instruction function having a function of transmitting a data transmission instruction to all at once has the following excellent effects. From a plurality of devices, it is possible to collect data generated at the same time or at a specified time close to a predetermined time regardless of the characteristics of each device. Therefore, it is possible to reduce an analysis error of data related to the devices. It is most suitable for a data communication function such as a GPIB in which a handshake operation is executed at the start of communication.

[Brief description of the drawings]

FIG. 1 is a schematic block diagram showing a configuration of a data collection function according to an embodiment of the present invention.

FIGS. 2A and 2B are explanatory diagrams of the function of a data collection function based on the present invention. FIG. 2A is a schematic flow chart executed by a central data processing device, and FIG. FIG. 2 is a schematic block diagram showing the relationship between the element functions performed.

FIG. 3 is a schematic block diagram showing a configuration of a conventional data collection function.

[Explanation of symbols]

1: Central data processing device 1a: Centralized data transmission line 2: Simultaneous measurement control function 2A: Simultaneous measurement command function 2B: Input data terminal function 2C: Output data terminal function 2D: Simultaneous measurement start command signal receiving function 2E _{1 to} 2E _n : address detection function 2F ₁ ~2F _n: gating 2G ₁ to 2 g _n: temporary storage function 2H ₁ through 2h _n: output interface function 2J: data Reduction function 2A1～2an: individual data transmission terminal 2B1～2bn: individual data transmission line 3A ₁ ~3A _n: equipment

Claims (2)

[Claims] 1. A data collection device for collecting data created by a plurality of devices from a plurality of devices by a data communication line, receiving and temporarily recording an individual command output from the data collection device to each device, A data collection function comprising an instruction function having a function of simultaneously issuing individual instructions to each device based on a start instruction signal transmitted upon completion of output of the individual instruction. 2. The data collection function according to claim 1, wherein said data communication line is a data communication line formed based on GPIB specifications.