JPH03263298A - Data collector - Google Patents

Abstract

PURPOSE:To enable flexible correspondence corresponding to system configuration by setting respective plural input channels corresponding to a pulse train output type gauge or a digital value output type gauge and suitably transmitting respective effective information to a collector corresponding to the set. CONSTITUTION:In advance, a type setting means C1 sets respective input channels CH1-CHm corresponding to the oulse train or digital value output type gauge. A pulse number storing means C2 considers signals inputted to the input channels, which are set by the means C1 corresponding to the pulse train output type gauge, as a pulse train and stores only information showing the number of pulses in the pulse train as the effective information. Similarly, a digital code storing means C3 stores only information showing digital codes as the effective information. An effective information transmitting means C4 suitably transmits the respective effective information stored by the means C2 and C3 through a communication line L to a collector M. Thus, the flexible correspondence is enabled corresponding to the system configuration.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention (table 1) has a plurality of input channels into which output signals from a plurality of digital output format instruments are respectively input, and the input results from the input channels are transmitted in a predetermined manner. The present invention relates to a data collection device that appropriately transmits data to a distant collection device using a line.

[Prior art] Generally, from the viewpoint of improving information processing efficiency and reliability,
A measuring instrument is placed adjacent to the object to be measured. Therefore, each instrument is often placed geographically apart,
Reading the measurement results from a large number of instruments required a great deal of effort.

Therefore, a data collection device has been developed that captures the output signal from the meter and transmits it as appropriate using a predetermined communication line.

As for the characteristics of these data collection devices, consistency with the output signal format of the instrument that collects the data is essential. Therefore, various types of conventional data acquisition devices are known, including those that input analog signals, those that input digital value signals such as digital codes, and those that input pulse trains.

[Problems to be Solved by the Invention] Conventional data collection devices (designed and manufactured according to the type of data to be collected).

Therefore, when a group of instruments from which you want to collect data includes instruments with analog signal output format, digital value signal output format, pulse train signal output format, etc., it is necessary to install multiple data collection devices that match the output formats. In addition, there were many problems such as increasing the installation area and increasing costs.In addition, when each data collection device to be installed transmits the collected data through the same line,
The present invention was developed to solve the above problems, and the format of input data to multiple input channels is not fixed. The purpose of the present invention is to provide an excellent data collection device that can flexibly respond to the system configuration of the instrument from which data is to be collected, and is highly compatible with so-called instruments.

[Means for Solving the Problems] In order to solve the above problems, the means configured in the present invention, as shown in the basic configuration diagram in FIG. In a data collection device that has a plurality of input channels CHI to CHm, each of which receives input, and appropriately transmits the input results from the input channels CH1=CHm to a distant collection machine M using a predetermined communication line, A format setting means C1 for setting each of the input channels CHI-CHm to correspond to a pulse train output format instrument or a digital value output format instrument; Pulse number storage means C that regards the signal input to the input channel as a pulse train signal and stores only information on the number of pulses of the pulse train as valid information.
2, and the format setting means C1 sets the digital value output format meter (
A digital code storage means C3 that regards a signal input to an input channel set to correspond to this as a digital value signal and stores only the information of the digital code as valid information; and the digital code storage means C3. and valid information transmitting means C4 for appropriately transmitting each valid information stored in the pulse number storing means C2 to a distant collector M using a predetermined communication line. Its gist is:

[Operation] The format setting means C1 in the data collection device of the present invention is
Each of the plurality of input channels Day 0 1 to CHm is set to correspond to a pulse train output format instrument or a digital value output format instrument. Since the signal processing method differs depending on the format of the digital signal, the signals input from the input channels 01 to CHm must be appropriately distributed to separate processing steps according to the format.

Therefore, it is possible to set in advance what type of output format digital signals are input for each input channel, thereby ensuring the signal distribution and ensuring the flexibility of the system.

Pulse number storage means C2 [The signal input to the input channel set in the format setting means c1 to correspond to the pulse train output format instrument is regarded as a pulse train signal, and only the information on the number of pulses of the pulse train is valid. Store as information. That is, from among various amounts of information included in the input pulse train signal, information such as pulse amplitude and pulse width is deemed unnecessary, and information on the number of pulses included in the pulse train is extracted. This provides accurate processing of the output signal of the instrument connected to this input channel.

Digital code storage means C3F Regards the signal input to the input channel set by the format setting means C1 to correspond to a digital value output format instrument as a digital value signal, and stores only the information of the digital code as valid information. Remember.

That is, the signal input from this input channel is determined to be a predetermined digital code, and processed according to the regularity of, for example, a known binary code or ASCII code.

Valid information transmission means C411 Digital code storage means C
3 and the valid information (pulse number or digital code) stored in the pulse number storage means C2 are appropriately transmitted to the distant collector M using a predetermined communication line. Here, when transmitting, in addition to outputting the most effective information as is, it modulates the data appropriately according to the characteristics of the specified communication line, compresses the data, adds an error detection function, etc. Transmission techniques are available.

EXAMPLES Hereinafter, in order to explain the present invention more specifically, the present invention will be described in detail with reference to Examples.

[Example] FIG. 2 shows a data collection device 10 that is an example of the present invention.
FIG. 2 is an electrical circuit block diagram of

As shown in the figure, the data acquisition device of this embodiment has m analog signal input channels and n digital signal input channels.

The m analog signals are input to the A/D converter 10a,
Here, it is converted into a digital signal as appropriate.

The central processing unit 10bl also reads out the information digitally converted by the A/D converter 10a in a predetermined order,
This is sequentially stored in m analog instrument storage areas prepared in the memory section 10c.

On the other hand, since each input channel for digital signals is influenced by the arrangement of instruments for data collection, it is unambiguous whether a digital value signal or a pulse train signal is input as a digital signal. Target (,X.

Therefore, in this embodiment, a setting switch 10d is provided separately.By operating this setting switch 10d, each input channel of the digital signal can be freely set for a digital value signal or a pulse train signal.

The setting switch 10d may be either a hardware configuration such as a well-known dip switch or a software configuration whose settings can be changed programmatically.

Therefore, the signal from the digital input 10e connected to the n digital signal output instrument is processed as follows. First, the digital input section '[Oe(&n) temporarily stores the digital signals input from the instruments, and sequentially transmits the stored contents to the central processing section Job in response to requests from the central processing section 10b. The central processing unit 10b performs a so-called multiplexer-like operation.The central processing unit 10b processes the information transmitted from the digital input unit 10e according to the settings of the setting switch ``-Plod'' to determine valid information. are appropriately stored in the memory unit 10 c (: n prepared storage areas for digital instruments).

Regarding the processing of this digital information, the central processing unit 10b
A flowchart of the program executed by is shown in FIG.

This program is executed at predetermined intervals from when the central processing unit 10b is activated, and immediately reads the setting contents of the setting switch 10d as soon as the process is started (step 100). Then, it is determined whether or not the current time is the time at which data should be collected from any digital signal output instrument, with reference to a table (not shown), etc. (step 110), and when data collection is not necessary. 1. Exit this program.

On the other hand, when it is determined in step 110 that it is time to collect data (step 120), the digital information regarding the instrument i for which data collection is required is input from the digital input section 10e. It is determined whether the output format is a digital value signal or a pulse train signal (step 130).

When it is determined that the signal is a digital value signal, the read information is processed based on a predetermined digital code (Step 40), and when it is determined that it is a pulse train signal, the number of pulses is counted (Step 150),
Create valid information from the signals output from.

When the selection of valid information according to the signal format is completed, the information is stored in a predetermined storage area of the memory unit 10c prepared for the meter i, and this program is terminated.

When the processing of analog signals and various digital signals is completed as described above, the measurement results of each meter are sequentially accumulated in a predetermined area of the memory section 10C. Then, at a predetermined time or in response to an external request, the central processing unit 10bl-L transmits the measurement results of each instrument stored in the memory unit 10c to the communication control unit 10f. By controlling the modulation/demodulation section 10g, the measurement results can be sent to a distant collector (not shown).

Note that, as is clear from the above description, the data collection device 1
0 data collection timing and communication of measurement results to a distant collection device, etc. (accurate synchronization at a predetermined time is required. Therefore, a real time reference is established inside the data collection device 10. Real time clock 10h for giving
The central processing unit 10b is provided with information regarding real time from this real time clock 1oh.

The data collection device of this embodiment configured as described above (has the following effects).

Since the central processing unit 10b executes the program shown in FIG. 3, it is possible to directly input and collect data from an instrument that outputs either a digital value format or a pulse train format.

Therefore, unlike in the past, it is no longer necessary to install multiple data collection devices to match the signal output format of the instrument, the installation area of the data collection devices is small, and the entire system can be constructed easily and inexpensively. be able to.

Furthermore, the input data format of each input channel of the digital input section 10e is not unique to the data acquisition device 10, and can be freely changed to a digital value format or a pulse train format using the setting switch 10d.

Therefore, the data collection device can flexibly correspond to the system configuration of the instrument that is the object of data collection, and has excellent versatility.

It should be noted that the configuration of the data collection device of the present invention is not limited to the above-mentioned embodiment in any way, but can be realized in various ways without departing from the gist thereof. For example (e) Processing of input data according to the settings of the setting switch 10d,
It may be processed in advance in the digital input section 10e. Perform such distributed data processing (i Central processing unit 1
It is possible to reduce the calculation load on 0b, and it is possible to adapt to various systems simply by changing the digital input section 10e, which further improves the flexibility of the device.

[Effects of the Invention 1] As explained above, the data acquisition device of the present invention is configured so that each of the plurality of input channels corresponds to a pulse train output format instrument or a digital value output format instrument, and the pulse train pulses are adjusted according to the settings. Only number information or digital code information is stored as valid information, and the information is appropriately transmitted to a distant collection machine using a predetermined communication line.

Therefore, data from instruments with different output formats can be collected by a single data collection device, and communication control to the collection device is also simplified.Moreover, the format of input data to multiple input channels is fixed. The result is a data collection device with excellent flexibility and consistency that can be flexibly adapted to the system configuration of the instrument that is the object of data collection.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of the basic configuration of the present invention, FIG. 2 is an electric circuit block diagram of a data collection device that is an embodiment, and FIG. 3 is a flowchart of a program executed in the data collection device. ing. 81~Sn-...Digital output type instrument C port 1~CH
m...Input channel L...Specified communication line M...Collection machine C1...
Format setting means C2...Pulse number storage means C3...
Digital code storage means C4...Valid information transmission means 10...Data collection device 10a...A/D converter 10b...Central processing section 10c...Memory section 10
d...Setting switch 10e...Digital input section 1
0f...Communication control section 10g...Modulation/demodulation section 10h.
・Real time clock

Claims (1)

[Claims] 1. In a data collection device that has a plurality of input channels into which output signals from a plurality of digital output format instruments are respectively input, and transmits the input results from the input channels to a distant collection machine as appropriate using a prescribed communication line. , format setting means for setting each of the plurality of input channels to correspond to a pulse train output format instrument or a digital value output format instrument; and a format setting means configured to correspond to a pulse train output format instrument. Pulse number storage means that regards the signal input to the input channel as a pulse train signal and stores only information on the number of pulses of the pulse train as valid information, and the format setting means so as to correspond to a digital value output format instrument. digital code storage means that regards a signal input to an input channel set to a digital value signal as a digital value signal and stores only the information of the digital code as valid information; and the digital code storage means and the pulse number storage means. A data collection device characterized by comprising: valid information transmitting means for appropriately transmitting stored valid information to a distant collection machine using a predetermined communication line.