JP2861882B2 - Real-time memory combined recorder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a real-time memory combined recorder for recording time-series data, and more particularly to a real-time recorder and a memory recorder when the recording paper feed speed is increased or decreased by an event recording function. On the consistency of the recording trajectory.

[0002]

2. Description of the Related Art A real-time recorder is a recorder which has been conventionally used, and records an input signal such as a measured temperature value on recording paper as it is. The important data in the recorder is a rough signal fluctuation as a whole, and a sudden signal fluctuation is also required for equipment diagnosis and the like. Therefore, in order to accurately record the waveform of such sudden signal fluctuations, an event recording function is provided, for example, as disclosed in Japanese Patent Application Laid-Open No. 60-76616 proposed by the present applicant. For a typical signal fluctuation, the paper feeding speed is increased to facilitate the analysis of the signal fluctuation. The recording results of such a real-time recorder are used for submission to government offices.

[0003] On the other hand, a memory recorder temporarily stores the same data as a signal recorded on a paper medium by a real-time recorder on a waveform storage medium such as a floppy disk or a compact disk. Or to record on a paper medium again.

[0004]

However, when the event recording function operates on the real-time recorder and the paper feed speed changes, the data stored in the waveform storage medium in the conventional memory recorder is re-recorded. In such a case, it is difficult to make the time axis coincide with that of the real-time recorder, and there has been a problem that the trajectories of the two recording papers are different.

FIGS. 7A and 7B are comparison charts of waveform trajectories recorded by a real-time recorder and a memory recorder. FIG. 7A shows a waveform of an input signal, FIG. 7B shows a real-time recorder, and FIG. 7C shows a memory recorder. I have. In the waveform of the input signal, the first wave has a large amplitude, and the amplitude from the second wave to the seventh wave is about a quarter of the first wave. Therefore, in the real-time recorder, the normal recording / event recording control unit 20 operates to increase the paper feed speed for the first wave as event recording.
After the second wave, the normal recording is performed at a slow speed based on the paper feed speed. In the real-time recorder, at the time of event recording, the paper feed speed is faster than the paper feed speed in the normal recording, and is 2.5 times here.

However, in the memory recorder, the same locus as the waveform of the input signal is left on the recording paper. This is because the difference between the event record and the normal record is not recorded in the data stored in the waveform memory, and therefore, if the event record is included in the waveform recorded on the paper medium again, There was a disadvantage that it did not match the trajectory.
Since the record of the real-time recorder may be used for submission to the government office as an original, it is convenient to use a re-recorded track of the memory recorder as a duplicate. The present invention has solved such a problem, and provides a real-time memory dual-purpose recorder in which the trajectories of waveforms recorded by a real-time recorder and a memory recorder coincide with each other even when event recording is performed. Aim.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a real-time signal input unit 10 to which a measurement signal such as a temperature or a flow rate is input, and a signal input to the real-time signal input unit. When a value or a signal change rate exceeds a predetermined threshold value, event recording is performed. Otherwise, normal recording / event recording control unit 20 for performing normal recording and the normal recording / event recording control unit specify The waveform generating unit 30 sequentially generates a command signal of the recording head position of the recorder corresponding to the input signal according to the recording mode, and the recording mode designated by the normal recording / event recording control unit. A paper feed controller 40 for controlling the paper feed speed of the recorder, a waveform memory 60 for storing a signal input to the real-time signal input unit, and a storage for the waveform memory. A storage synchronization signal generation unit 70 for determining an sampling period, and a memory recorder signal for storing the signal stored in the waveform memory to the waveform generation unit while storing the signal in the waveform memory at a sampling period determined by the storage synchronization signal generation unit. The real-time memory / recorder having the input / output unit 50 has the following configuration.

The storage synchronization signal generator receives the paper feed speed signal from the paper feed controller, determines a sampling period proportional to the paper feed speed, and outputs the waveform memory signal to / from the memory recorder signal input / output unit. When sending the signal stored in the waveform generator to the waveform generator, the paper feed controller holds a constant paper feed speed.

[0009]

According to the structure of the present invention, a normal real-time recorder includes a real-time signal input unit 10, a normal recording / event recording control unit 20, a waveform generation unit 30, and a paper feed control unit 40. . The memory recorder includes a waveform memory 60, a storage synchronization signal generator 70, and a memory recorder signal input / output unit 50, and further includes a real-time signal input unit, a waveform generator And a paper feed control unit.

In the real-time recorder, the normal recording / event recording control unit increases the paper feed speed in event recording as compared with normal recording, and increases the frequency of occurrence of the recording head position command signal as necessary. Thus, accurate waveform recording in accordance with the fluctuation of the paper feed speed can be performed. Therefore, when storing a signal in the waveform memory in the memory recorder, the sampling period is shortened in accordance with the rate at which the paper feed speed is faster in event recording than in normal recording. Then, even when the paper feed speed is constant during re-recording, the number of signals in the event recording equivalent part increases compared to the normal recording equivalent part, and the same trajectory as that recorded by the real-time recorder is recorded. Obtained on paper.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG.
FIG. 1 is a configuration block diagram showing one embodiment of the present invention. In the figure, a real-time signal input unit 10 receives a measurement signal such as a temperature or a flow rate. The input signal only needs to be suitable for recording by a recorder. A / D conversion is performed with a predetermined accuracy for an analog signal, and a numerical value is read for a digital signal. Normal recording / event recording control unit 20
The event recording is performed when a signal value, a signal change rate, and the like of a signal input to the real-time signal input unit 10 exceed a predetermined threshold, and normal recording is performed in other states. In event recording, in order to record important phenomena, the paper feeding speed is increased so that the situation of waveform fluctuation can be accurately grasped. Also, in normal recording, it is important to identify the trend of the entire data, so the paper feed speed is made slow.

The waveform generator 30 sequentially generates a command signal for the recording head position of the recorder corresponding to the input signal in accordance with the recording mode designated by the normal recording / event recording controller 20. The recording head may be equipped with a pen, or may be equipped with a thermal head if it is a heat-sensitive type. In other words, the recording head performs schematic recording of signals on recording paper. The paper feed control unit 40 controls the paper feed speed of the recorder in accordance with the recording mode specified by the normal recording / event recording control unit 20. Normally, the paper feed speed is increased for event recording, and is decreased for normal recording.

The waveform memory 60 stores a signal input to the real-time signal input unit 10, and the storage capacity depends on the capacity of a storage medium. Storage synchronization signal generation unit 70
Is used to determine the sampling period stored in the waveform memory 60. A clock signal supplied from the outside and a paper feed speed signal sent from the paper feed control unit 40 are input, and the sampling interval is proportional to the paper feed speed. Is shortened. The memory recorder signal input / output unit 50 stores the signal stored in the waveform memory 60 to the waveform generation unit 30 while storing the signal in the waveform memory 60 at the sampling period determined by the storage synchronization signal generation unit 70.

The operation of the apparatus having the above-mentioned configuration will be described below. 2A and 2B are explanatory diagrams of the locus of an input signal and a recording waveform. FIG. 2A is a waveform of an input signal, FIG. 2B is a real-time recorder, and FIG. 2C is a recording waveform diagram of a memory recorder. In the waveform of the input signal, the first wave has a large amplitude, and the amplitude from the second wave to the seventh wave is about a quarter of the first wave. Therefore, in the real-time recorder, the normal recording / event recording control unit 20 operates to increase the paper feed speed for the first wave as event recording. After the second wave, the normal recording is performed at a slow speed based on the paper feed speed.

In the memory recorder, signals are stored in the waveform memory 60. Since the memory recorder signal input / output unit 50 is a portion corresponding to event recording for the first wave, the paper feeding speed is high, and thus the sampling cycle determined by the storage synchronization signal generation unit 70 is also short. Since the second and subsequent waves have a slow paper feed speed as a part equivalent to normal recording, the sampling period is also a standard value determined by the clock signal.

Next, the re-recording function of the memory recorder will be described. FIG. 3 is a block diagram showing a configuration of a portion of the apparatus shown in FIG. 1 which is in charge of a re-recording function of a memory recorder. The memory recorder signal input / output unit 50 reads out the signal stored in the waveform memory 60, sends the signal value to the waveform generation unit 30, and needs to instruct the paper feed control unit 40 of the paper feed speed. Perform according to. Here, the paper feed speed is the same in the real-time recorder as the area where event recording was performed and in the area where normal recording was performed. Since the speed at which the data to be read is sent to the waveform generating unit 60 is also the same, a signal waveform proportional to the sampling period at the time of recording is written on the recording paper. Therefore, as can be seen by comparing FIGS. 2B and 2C, the re-recording of the memory recorder has the same locus as the recording of the real-time recorder.

FIG. 4 is a block diagram showing the configuration of a second embodiment of the present invention. In FIG. 4, only the differences from FIG. 1 will be described. Here, a paper feed speed memory 80 is provided to match the re-recording locus of the memory recorder with the recording of the real-time recorder. The paper feed speed memory 80 stores the paper feed speed of the real-time recorder when storing signals in the waveform memory 60 in synchronization with the waveform memory 60. The setting of the sampling period for the memory recorder signal input / output unit 50 is externally given, but is constant regardless of the paper feed speed of the real-time recorder.

The operation of the apparatus having the above-described structure will be described below. 5A and 5B are explanatory diagrams of the locus of an input signal and a recording waveform. FIG. 5A is a waveform of an input signal, FIG. 5B is a real-time recorder, and FIG. 5C is a recording waveform diagram of a memory recorder. It is almost the same as the case. The memory recorder is a waveform memory 60
When the signal is recorded on the paper feed speed memory 80, the paper feed speed of the real-time recorder is stored in synchronization with the storage of the waveform memory 60.

Next, the re-recording function of the memory recorder will be described. FIG. 6 is a block diagram showing the configuration of a part of the apparatus shown in FIG. 4 which is in charge of the re-recording function of the memory recorder. The memory recorder signal input / output unit 50 reads out the signal stored in the waveform memory 60, sends a signal value to the waveform generation unit 30, and stores the signal value in the paper feed speed memory 80 for the paper feed control unit 40. Send paper feed speed. by this,
In the memory recorder, the same paper feeding speed as that at the time of recording by the real-time recorder is performed for the portion corresponding to the event recording and the normal recording, and the re-recording of the memory recorder coincides with the recording of the real-time recorder. .

[0020]

As described above, according to the present invention corresponding to the configuration shown in FIG. 1, a signal is stored in the waveform memory 60 at a sampling period corresponding to the paper feed speed of the real-time recorder, and the signal is stored in the memory recorder. When re-recording is performed, the signal stored in the waveform memory 60 is sent to the waveform creating unit 30 with the paper feeding speed kept constant, so that the re-recording of the memory recorder coincides with the locus of the real-time recorder. This has the effect. 4 also has the same effect because the paper feed speed of the real-time recorder is stored in the paper feed speed memory 80.

[Brief description of the drawings]

FIG. 1 is a configuration block diagram showing one embodiment of the present invention.

FIG. 2 is an explanatory diagram of a locus of an input signal and a recording waveform.

FIG. 3 is a block diagram showing a configuration of a part of the apparatus shown in FIG. 1 which is in charge of a re-recording function of a memory recorder.

FIG. 4 is a configuration block diagram showing a second embodiment of the present invention.

FIG. 5 is an explanatory diagram of a locus of an input signal and a recording waveform.

FIG. 6 is a block diagram showing a configuration of a part of the apparatus shown in FIG. 4 which is in charge of a re-recording function of a memory recorder.

FIG. 7 is a comparison diagram of waveforms recorded by a real-time recorder and a memory recorder.

[Explanation of symbols]

 Reference Signs List 10 real-time signal input unit 20 normal recording / event recording control unit 30 waveform generation unit 40 paper feed control unit 50 memory recorder signal input / output unit 60 waveform memory 70 storage synchronization signal generation unit 80 paper feed speed memory

Claims (2)

(57) [Claims] 1. A real-time signal input section (10) to which a measurement signal such as a temperature or a flow rate is input, and a signal value, a signal change rate, and the like of a signal input to the real-time signal input section are set to predetermined thresholds. When the recording time exceeds the threshold value, event recording is performed. In other states, the normal recording / event recording control unit (20) for performing normal recording, and the input signal corresponding to the recording mode designated by the normal recording / event recording control unit. Generating section (30) for sequentially generating a command signal of a recording head position of a recorder corresponding to (1)
A paper feed control unit (40) for controlling the paper feed speed of the recorder in accordance with the recording mode designated by the normal recording / event recording control unit; and a signal input to the real-time signal input unit. A waveform memory (60), a storage synchronization signal generator (70) that determines a sampling period stored in the waveform memory, and a waveform memory that stores the waveform in the sampling period determined by the storage synchronization signal generator. And a memory recorder signal input / output unit (50) for sending a signal stored in the waveform generation unit to the waveform generation unit, wherein the storage synchronization signal generation unit includes a paper feed speed of the paper feed control unit. A signal is input, and a sampling period proportional to the paper feed speed is determined. When sending the stored signal to the waveform generation unit, the paper feed control unit keeps a constant paper feed speed, wherein the recorder also serves as a real-time memory. 2. A real-time signal input section (10) to which a measurement signal such as temperature and flow rate is input, and a signal value and a signal change rate of a signal input to the real-time signal input section are set to predetermined thresholds. When the recording time exceeds the threshold value, event recording is performed. In other states, the normal recording / event recording control unit (20) for performing normal recording, and the input signal corresponding to the recording mode designated by the normal recording / event recording control unit. Generating section (30) for sequentially generating a command signal of a recording head position of a recorder corresponding to (1)
A paper feed control unit (40) for controlling the paper feed speed of the recorder in accordance with the recording mode designated by the normal recording / event recording control unit; and a signal input to the real-time signal input unit. And a memory recorder signal input / output unit (50) for storing a signal stored in the waveform memory at a predetermined sampling period and transmitting a signal stored in the waveform memory to the waveform generation unit. A real-time memory combined recorder, comprising a paper feed speed memory (80) for receiving the paper feed speed signal of the paper feed control unit and storing the paper feed speed in synchronization with the waveform memory; When the signal stored in the waveform memory is sent to the waveform generation unit by the total signal input / output unit, the paper feed speed stored in the paper feed speed memory is used as the paper feed control unit. Real-time memory combined recorder, characterized in that the send.