JPH0532727Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a hybrid recorder that displays measured values in both analog and digital formats.

[Prior Art] Fig. 2 is a block diagram of a conventional hybrid recorder. 4 is an A/D converter that converts the analog measurement signal taken out by multiplexer 3 into a digital value; 5 is a digital value converted by A/D converter 4; 6 is the central processing unit (hereinafter referred to as CPU) that processes the measurement signal of
an indicator for digitally recording measured values by means of
is a recording means for recording measurement values by the CPU 5.

Note that here, an example is shown in which measurement signals from two channels are processed.

Next, the operation will be explained.

Analog measurement signals output from each channel are amplified by a preamplifier 2 and output to a multiplexer 3.

The multiplexer 3 takes out the amplified measurement signals of each channel by time division alternately and outputs them to the A/D converter 4.

The A/D converter 4 converts the measurement signal into a digital value and outputs it to the CPU 5.

The CPU 5 processes this digital value measurement signal,
The display device 6 and the recording means 7 are operated to perform analog and digital display and recording according to the measured values.

FIG. 3 shows the display/recording state of the hybrid type recorder constructed in this way.

As shown in the figure, the measurement signal of each channel is displayed as an analog display 61 such as a bar graph on a display 6, a digital display 62, and an analog recording 71 and digital printing 72 are performed on a recording paper 70 by a recording means 7. .

[Problems to be solved by the invention] As described above, the conventional hybrid recorder uses a multiplexer to sample and process the measurement signal of each channel. There was a problem that the analog recording became discontinuous.

This idea was made to solve the above problems, and it is possible to perform analog and digital recording of measured values with high precision using the same input signal, and in particular, to continuously perform analog recording for inputs with a fast response speed. The purpose is to obtain a hybrid type recorder that is capable of

[Means for Solving the Problems] The recorder according to this invention includes a preamplifier that amplifies a measured value from at least one channel, and a preamplifier that is provided corresponding to the preamplifier, and that is provided in correspondence with the preamplifier. an analog recording mechanism that automatically balances the rotational position of the electric motor in accordance with the amplified measurement value and records the measurement value in analog form by the rotation of the electric motor; The present invention is characterized in that it includes a digital recording mechanism that processes a digital signal obtained by /D conversion and digitally records the measured value.

[Operation] The preamplifier amplifies the measurement signal (measurement value) from the corresponding channel.

The analog recording mechanism automatically balances the rotational position of the motor by following the measurement signal amplified by the preamplifier, and performs analog recording of the measurement value as the motor rotates.

On the other hand, the digital recording mechanism performs A/D conversion on the measurement signal amplified by the preamplifier, which is the same signal that is input to the analog recording mechanism, and processes the resulting digital signal for each channel. Make a digital record containing the measured values.

[Embodiment of the invention] An embodiment of the invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing the structure of a recorder according to this invention.

In the figure, 81 is an internal amplifier that amplifies the measurement signal amplified by the preamplifier 2; 82 is a motor that operates in response to the output of the internal amplifier 81;
3 is a potentiometer circuit that balances its output with the output of the internal amplifier 81 according to the rotation of the electric motor 82.

Further, 1A is an analog recording mechanism, and 1B is a digital recording mechanism.

This internal amplifier 81, electric motor 82, and potentiometer circuit 83 constitute an automatic balance mechanism 8, and an analog recording means 9 such as a pen is driven to an equilibrium position. Note that the same components as in FIG. 2 are given the same numbers and their explanations are omitted.

Next, the operation will be explained.

The measurement signal outputted from each channel is amplified by a preamplifier 2, outputted to an automatic balancing mechanism 8 provided corresponding to each channel, and inputted to a multiplexer 3.

The internal amplifier 81 of the automatic balancing mechanism 8 amplifies the measurement signal output from the preamplifier 2 and
Activate 2.

At this time, the output of the motor 82 is
The potentiometer circuit 83 operates to add a predetermined value to the measurement signal input to the internal amplifier 81 based on this output.

Here, the rotational position of the electric motor 82 becomes a position according to the measured value, and the analog recording means 9 whose position is balanced by the rotation of the electric motor 82 performs analog display or recording according to the measured value.

In other words, the analog recording 71 in FIG. 3 is continuous recording because it is recorded with a pen or the like.

On the other hand, the measurement signals of each channel output to the multiplexer 3 are digitally processed as before.
The display 6 displays digitally according to the measured value, and the recording means 7 digitally records the measured value.

[Effects of the invention] As explained above, according to the recorder of the invention, the analog recording mechanism does not include a configuration related to digital recording, and the analog recording mechanism and the digital recording mechanism are configured separately, and The measurements from each channel are amplified by a preamplifier, and the same signal from the preamplifier is input to each of the analog and digital recording mechanisms to contain the measurements, along with an analog record of the measurements for each channel. Since the configuration performs digital recording, both analog and digital records of the same measured value can be obtained, and the data identity of the analog and digital records is maintained. Responsiveness and followability are improved, and analog and digital recording of corresponding numerical data can be performed with high precision. Furthermore, since the analog recording mechanism does not include any configuration related to digital recording, analog recording of measurement signals with a fast response speed can be performed continuously without interruption.

[Brief explanation of the drawing]

Figure 1 is a configuration diagram of the recorder according to this invention, Figure 2
The figure is a block diagram of a conventional hybrid recorder, and FIG. 3 is a diagram showing an example of displaying measured values in both analog and digital formats. 1... Preamplifier, 3... Multiplexer, 4
... A/D converter, 5 ... CPU, 6 ... Display device, 7 ... Recording means, 8 ... Automatic balancing mechanism, 8
1... Internal amplifier, 82... Electric motor, 83... Potentiometer circuit, 9... Analog recording means, 1A...
Analog recording mechanism, 1B...Digital recording mechanism.

Claims (1)

[Claims for Utility Model Registration] A preamplifier for amplifying a measured value from at least one channel; an analog recording mechanism that automatically balances the rotational position of the motor and records the measurement value in analog form by the rotation of the electric motor; and a digital signal obtained by A/D converting the measurement value amplified by the preamplifier. A recorder comprising: a digital recording mechanism for processing and digitally recording the measured values.