JP3250826B2 - How to import input data to waveform recorder data RAM - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for taking in input data to a data RAM for a waveform recorder.

[0002]

2. Description of the Related Art A waveform recorder is used in a required section such as a production line to perform a characteristic test for measuring a distortion factor or a crest factor of a waveform in order to determine the quality of an object to be measured such as a product. Many are used.

FIG. 3 illustrates a schematic configuration of a conventionally used waveform recorder. As a whole, an analog data (input signal) as a measured value is converted into digital data to convert the data into a digital signal. Input part 2 for taking in
An input data control unit 3 for controlling the input of the fetched digital data; a data RAM 4 in which data of a specific fetch channel set by the input data control unit 3 is written; , And at least an operation unit 6 for performing various input operations using keys. These components are collectively controlled by a CPU 1 having a ROM and a RAM.

In this case, since the input section 2 has a plurality of channels, first, the operation section 6 is operated to designate a capture channel on the monitor section 5.

The designated channel is set in the input data control unit 3 via the CPU 1, and a write signal is sent from the input data control unit 3 to the data RAM 4 based on the setting, and the writing to the data RAM 4 is performed. Done. In this case, even if the input data is output from all the channels, only the input data from the capture channel set in the input data control unit 3 and from which the write signal is transmitted is written into the data RAM 4. Thus, input data from other channels without a write signal is not written to the data RAM 4.

[0006]

According to the above-mentioned conventional apparatus, the data RAM 4 into which input data from each channel can be written is determined in advance based on a specific correspondence relationship with the fetch channel. Therefore, writing to the data RAM 4 can be performed only by the write signal sent from the input data control unit 3.

However, since the data RAM 4 is fixed while associating with each channel, as the number of channels increases, the data R is correspondingly increased.
It is necessary to uniformly increase the number of AM4s, and the data RA
There was a disadvantage in that the use efficiency of M4 deteriorated.

[0008]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems encountered in the conventional apparatus, and has a structural feature that converts an analog input signal from each channel into a digital signal. An input section that can be loaded into the main unit, and one or more capture channels from each channel
File specification and data imported from this specified channel
Unit that can specify the length of the monitor, and the specification in the monitor unit
Under the optimal setting conditions determined by the
A channel selection unit capable of setting channel distribution conditions, an input data control unit capable of controlling writing of input data from a capture channel according to the distribution conditions, and a data RAM capable of writing input data from a capture channel. , At least an operation unit capable of performing necessary input operations and a CPU capable of centrally controlling each of these components, and a monitor unit for acquiring channels and estimating at that time.
After the length of the data to be imported is specified,
In the setting condition of the setting condition table held on the side of
Settings selected based on the status specified by the monitor unit
Of the acquisition channel, which is determined by the
Is set to Yan'neru selection unit, the input data from the capture channel, the data R under the write control signal outputted from the input data control unit based on the distribution condition after setting
That is , the data is written in the allocated area of the AM .

[0009]

Therefore, when writing the input data from the capture channel to the data RAM, the capture channel
And the length of the data captured from this capture channel
Is specified by the monitor, and held by the CPU in advance
Relationship with the optimal setting condition selected from the setting conditions
Change the distribution conditions for the acquisition channel determined by
Set in the channel selection section and set the sorting conditions after setting.
Therefore, writing input data from the acquisition channel
Can be allocated to the data RAM,
Flexible with the number of specified acquisition channels and data length
RAM under non-fixed conditions while supporting
Can be used efficiently.

[0010]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 2 is a block diagram showing a schematic configuration example of a waveform recording apparatus provided for carrying out the present invention.

According to FIG. 1, the whole is analog data (measured value) taken in from each of a plurality of channels.
An input unit 12 that converts an input signal into a digital form and can be taken into the apparatus main body, and an input signal from each channel.
Specify one or more acquisition channels and this designated channel
Mode that allows the specification of the length of data imported from
It is determined by the relationship between the monitor 16 and the status specified by the monitor 16.
Assignment conditions for acquisition channels under perfectly optimal setting conditions
A channel selection unit 13 which enables matter settings, the input data control unit 14 which enables the write control input data from the uptake channel according distribution conditions, allow writing included in the input data from the capture channel and CPU of the data RAM 15, a comprising at least an operating section 17 for performing an input operation of various necessary by input key, the whole of each of these components, the ROM and RAM
11 is generally controlled.

FIG. 1 is a flow chart showing an embodiment of the method of the present invention which is applied to the apparatus having the above-mentioned configuration. First, the input keys of the operation unit 17 are operated to prepare a plurality. From the channels, the monitor unit 16 specifies a fetch channel (CHN) required this time and a fetch length (SHOT) of data expected at that time. Note that in this case, the capture channel (CH
N), the data capture length (SHO)
Due to restrictions in relation to T), there may be cases where a plurality of designations cannot be made.

After designation of the fetch channel (CHN) and its fetch length (SHOT), these specified data are read into the CPU 11 and thereafter,
Optimal setting conditions selected from among the setting conditions previously stored in the CPU based on the number of designated acquisition channels (CHN) and the data acquisition length (SHOT)
Accordingly, the write area of the capture channel (CHN) is allocated to the entire area of the data RAM 15 .

In this case, the optimal setting condition is determined in advance by the CPU 1
Setting condition table (not shown) held on the side 1
The acquisition channel (CH) specified in the setting conditions of
N) and the relationship between the data capture length (SHOT)
It is set as the corresponding distribution condition.

[0015] The incorporation against the data RAM15 channel
After the allocation of the write area of the channel (CHN) is completed, the number of the designated capture channels (CHN), the capture length (SHOT), and the capture channel (CH
Such as taking into account the number of N), incorporation Ji to under the channel selection unit 13 of the optimum setting conditions under the control of CPU11
Channel distribution conditions are set .

Thereafter, the already designated capture channel (CHN) is set in the input data control unit 14 via the CPU 11.

After the process of setting the capture channel (CHN) to the input data control unit 14 is completed,
A sampling counter (SC) for determining the interval when analog data as waveform data, which is input data from the set acquisition channel (CHN), is extracted at regular intervals is set by operating the operation unit 17. You. The data counter (DC) indicating the amount of data that can be captured at that time is a capture length (SHOT)
The specific numerical value is determined in accordance with the setting situation of.

After the setting of the sampling counter (SC) and the data counter (DC) corresponding to the input data from the set acquisition channel (CHN) is completed, the data to be sent is designated by the designated acquisition. Only when the input data is from the channel (CHN)
Data R assigned in relation to the write control signal output from input data control unit 14 based on the distribution condition
The data is sequentially written to the AM 15 and is taken in until the data counter (DC) becomes “0”.

Since the present invention is configured as described above, when writing input data from the fetch channel to the data RAM 15,
(CHN) and this acquisition channel (CHN)
The length of the data to be inserted (SHOT) is
After specifying the settings, the settings held in the CPU 11
The setting determined by the relationship with the optimal setting condition selected from the fixed conditions
Channel selection section
13 and the sorting conditions after the setting
Area for writing input data from the capture channel
Can be assigned to the data RAM 15. But
Therefore, the data RAM 15 stores the designated capture channel.
(CHN) and data length (CHN) flexibly
Utilize efficiently in non-fixed situations while responding
be able to.

[0020]

As described above, according to the present invention, when the input data from the capture channel is written into the data RAM, the capture channel and the capture channel are used.
Specify the length of data taken in from the channel with the monitor
After that, is the setting condition held in advance by the CPU
Capture channel determined by the relationship with the optimal setting conditions selected
The distribution conditions for the channel in the channel selection section
In addition, according to the sorting conditions after setting,
Write area for input data from channel to data RAM
Can be assigned to the specified acquisition channel.
The data RAM can be used efficiently under non-fixed conditions while flexibly corresponding to the number of channels and the length of data.

[Brief description of the drawings]

FIG. 1 is a flowchart showing an outline of a processing procedure as one embodiment of the present invention.

FIG. 2 is a block diagram showing a schematic configuration of an apparatus used for carrying out the method of the present invention.

FIG. 3 is a block diagram showing a schematic configuration of an apparatus provided for implementing a conventional method.

[Explanation of symbols]

 11 CPU 12 Input unit 13 Channel selection unit 14 Input data control unit 15 Data RAM 16 Monitor unit 17 Operation unit

Claims (1)

(57) [Claims] An input section capable of converting an analog input signal from each channel into a digital signal and taking it into the apparatus main body, and at least one fetch channel from each channel.
And the data imported from this specified channel
The monitor part that can specify the length and the specified state in the monitor part
Under the optimal setting conditions determined by the
A channel selector for setting the channel distribution conditions ,
An input data control unit capable of controlling writing of input data from a capture channel according to distribution conditions, and a data RA capable of writing input data from a capture channel
And M, an input and which can operate the operation unit required, with at least a centralized control that can CPU of each of these components is expected in the uptake channel by monitoring unit
After the data capture length is specified, the CPU
From the setting conditions of the setting condition table held in
Optimal setting conditions selected based on the specified conditions in the
The distribution condition of the acquisition channel determined by the relationship
Is set to channel selection section, the input data from the capture channel, the data RAM under the write control signal outputted from the input data control unit based on the distribution condition after setting
The input data to the waveform recorder data RAM, wherein the data is written to the assigned area of the waveform recorder.