JPH08304464A - oscilloscope - Google Patents

Abstract

PURPOSE: To make a waveform-collecting part compact by receiving waveform data sent from the waveform-collecting part by wireless by special eyeglasses and displaying waveforms in a view field of a user by a display device built in the eyeglasses. CONSTITUTION: A waveform-collecting part is constituted of a probe 3 and a main body part 4. An input signal to be observed is, via the probe 3, an attenuator 402, an amplifier 403 and an A/D converter 404, stored in a memory 405. To a transmission circuit of a time base circuit 408 is input a reference clock from a display manipulation part built in display manipulation eyeglasses via an antenna 45 and a transmitting/receiving circuit 406. A sampling clock synchronous with a phase-compared reference clock signal is generated. Then, a trigger signal from a trigger gate circuit 407 is input to the circuit 408, whereby clocks of a predetermined number of samples are generated. The inputting of clocks to the memory 405 is stopped then. Waveform data in the memory 405 are transmitted by wireless to the display manipulation part via a CPU 409 and the antenna 45 and displayed by the display manipulation glasses.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the display and operability of an oscilloscope.

[0002]

2. Description of the Related Art A waveform observation device such as an oscilloscope has the following drawbacks.

The external dimensions are determined by the display portion and operation portion (panel portion constituted by knobs, switches, etc.) of the CRT, etc., which is large and space-consuming and inconvenient to carry.

In order to observe the waveform, a large space for placing a measuring instrument must be provided near the measured point.

Even if the probe is held by hand at the measurement point, the probe must be manually operated in order to change the measurement conditions, and the measurement may be interrupted.

If the measuring instrument cannot be placed near the measuring point, the face must be moved to alternately see the display portion of the measuring instrument and the measuring point, and the measuring point and the waveform cannot be observed at the same time.

It has been difficult to increase the number of channels with respect to the number of channels provided as standard in the measuring instrument body.

[0008]

SUMMARY OF THE INVENTION It is an object of the present invention to eliminate these drawbacks and provide the oscilloscope shown below.

It is a small oscilloscope that is a hands-free panel-operated oscilloscope that allows you to see the waveform wherever you look and it is easy to increase the number of channels.

[0010]

The present invention uses the following means in order to achieve the above object.

Waveform data sent by radio from the waveform collecting section is received by dedicated glasses, and the waveform is displayed in the user's visual field by a display device built in the glasses.

The oscilloscope measurement conditions and the like are set and operated by picking up a voice from a microphone attached to the glasses and recognizing the voice, and further recognizing the viewpoint position (eye movement) and blinking with the built-in viewpoint sensor in the glasses. As a substitute for a mouse, the control menu displayed in the field of view can be operated in multiple ways without using hands by staring at it with eyes and combining it with blinking.

The waveform collecting section includes an attenuator, an amplifier, and an A
It has a D converter, memory, CPU, trigger circuit, etc., and is a normal digital oscilloscope configuration, but there is a wireless transmission / reception circuit instead of the display device and operation panel, and between the special glasses for displaying and operating. Perform wireless communication.

[0014]

Function As a result, the following functions are achieved.

Since the display device and the operation panel are not required in the measuring instrument body, the waveform collecting section can be miniaturized.

By the operation by the voice recognition and the operation by the movement of the eyes, it is possible to concentrate the hand on the measurement point without annoying the hand for the operation.

Since the waveform is displayed by the special glasses, the waveform can be seen regardless of where it is facing, and it is not necessary to secure a place for placing the measuring instrument.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1, 2, 3, and 4.

FIG. 1 is an external perspective view of the image of this embodiment. The upper part is the waveform collection unit 1, and the lower part is the display operation unit glasses 2.

FIG. 2 is a block diagram of the waveform collecting section 1.
It is composed of a probe 3 and a main body 4. The observed input signal enters the attenuator 402 through the probe 3, is attenuated to an appropriate level, passes through the amplifier 403, and the AD converter 40.
The analog value is converted into a digital value in 4 and the memory 4
It is stored in 05. A sampling clock is output from the time base circuit 408 and supplied to the AD converter 404 and the memory 405. The time base circuit 408 includes a PLL (Phase Lock Loop) type oscillation circuit. This oscillation circuit uses the reference clock from the reference clock generation circuit 208 of the display operation unit block diagram of FIG. 406, and the phase comparison is performed with the input reference clock signal to generate a sampling clock synchronized with the reference clock signal.

The trigger gate circuit 407 includes an amplifier 403.
A synchronized trigger signal is generated from the input signal branched from the and the trigger gate signal is generated from the synchronized trigger signal. After inputting this trigger gate signal, the time base circuit 408 stops the clock to the memory 405 by generating a clock of a predetermined number of samples and stops the waveform data writing operation of the memory 405. The CPU 409 wirelessly communicates the waveform data stored in the memory 405 with the display operation unit shown in FIG. Further, the above-mentioned trigger gate signal can be sent to another waveform collecting section through the transmitting / receiving circuit 406, and the trigger gate signal of the other waveform collecting section can be received from the transmitting / receiving circuit 406 and used. As a result, when multi-channel signal observation is performed using multiple waveform acquisition units, multi-channel signal observation can be performed with the same trigger by using the trigger gate of the master waveform acquisition unit with another waveform acquisition unit. . The attenuator 402, the amplifier 403, the trigger gate circuit 407, and the time base circuit 408 are the CPU 409.
Is controlled by, and setting as an oscilloscope is performed.

FIG. 3 is a block diagram of the display / operation unit. This apparatus is incorporated in dedicated glasses. LCD
The (liquid crystal) display device 201 and the LCD drive circuit 202 are
The oscilloscope waveform display and the control menu for operating the oscilloscope are displayed within the field of view of the glasses. These image displays are the technology realized by the virtual reality head-mounted display, which is currently attracting attention, and the function (see-through function) that allows you to see the outside scenery through this image is also available in the technical magazine Nikkei Electronics, 1994.9.26 (no.618)
No. ”p. 67-p. 83, which is a feasible technique. Waveform data wirelessly communicated from the waveform display unit is passed through the antenna 25 and the transmission / reception circuit 209 to the LCD.
The display device 201 and the LCD drive circuit 202 display a waveform in the field of view in the glasses. Viewpoint sensor 203
Senses the movement of the user's eyes, and the viewpoint position calculation block 204 determines the viewpoint of the user. The blink recognition block 205 recognizes the user's blink based on the information from the viewpoint sensor 203. The operation analysis block 211 analyzes the user's operation from the information of the viewpoint position calculation block 204 and the recognition block 205, transmits command data for changing the measurement conditions of the waveform collection unit of FIG. 1 described above through the transmission / reception circuit 209, and drives the LCD. On the circuit 202, a viewpoint pointer is displayed on the control menu display portion. Also,
Voice recognition block 2 that picks up the user's voice from the microphone 206
At 07, the intended operation is analyzed from the voice of the user, and the command data for changing the measurement condition is transmitted to the waveform collecting section of FIG. 2 through the transmitting / receiving circuit 209. Reference clock generation circuit 208
Is the PL of the time base circuit 408 of the waveform acquisition unit of FIG.
It serves as the reference clock for the L-system oscillator circuit. This is to ensure the simultaneity of the sampling clocks of each waveform collecting unit when the waveform observation of multiple channels is performed using a plurality of waveform collecting units.

Of course, in such a configuration, it is possible to observe waveforms of multiple channels by using a plurality of waveform collecting units.
The waveform collection unit is miniaturized by VLSI technology and can be integrated by directly connecting to the probe.

FIG. 4 shows an image view of the field of view seen by the user through the display / operation section glasses 2 of this embodiment. In the figure, reference numeral 24 is a field of view, 21 is a control menu, 22 is a waveform display, and 23 is a view in the field of view 24.

As described above, the user can always observe the waveform in the visual field.

In the present embodiment, the data communication is carried out wirelessly between the waveform collecting section and the display operation section, but it goes without saying that this may be infrared rays, ultrasonic waves, etc.

[0027]

The following effects can be obtained by the present invention.

Since the display device and the operation panel, which are originally required as an oscilloscope, are not required in the waveform collecting section, the waveform collecting section can be miniaturized.

By the operation by the voice recognition and the operation by the movement of the eyes, it is possible to concentrate the hand on the measurement point without annoying the hand for the operation.

Since the waveform is displayed by the special glasses, the waveform can be seen wherever the user is facing, and the eyes can be focused on the measurement point.

Since the display device and the operation panel are independent of the waveform collecting section, it is easy to increase the number of channels by using a plurality of waveform collecting sections.

[Brief description of drawings]

FIG. 1 is an external perspective view of an embodiment of the present invention.

FIG. 2 is a block diagram of a waveform collecting unit according to an embodiment of the present invention.

FIG. 3 is a block diagram of a display operation unit according to an embodiment of the present invention.

FIG. 4 is a display operation unit (special glasses) according to an embodiment of the present invention.
Image of the field of view seen from the user through the.

[Explanation of symbols]

 1 Waveform collection unit 2 Display operation glasses 3 Probe 4 Main body 6 Microphone 25, 45 Antenna

Claims (3)

[Claims] 1. An oscilloscope, comprising: a waveform collecting section for collecting and transmitting an observed signal, and waveform display glasses for receiving the observed signal data sent from the waveform collecting section and displaying it as a waveform in the visual field of the user. An oscilloscope characterized by having. 2. The waveform collecting section according to claim 1, wherein an attenuator that attenuates an observed signal input from a probe to an arbitrary level, an amplifier at a next stage, and an output of the amplifier are converted into digital data. An A / D converter, a memory for storing the observed signal data converted into the digital data, a trigger gate circuit for generating a trigger signal from the output of the amplifier, and the A / D converter which operates according to the trigger gate circuit.
A time base circuit that controls the operation timings of the D converter and the memory, and a cpu that controls at least the time base circuit, the attenuator, and the gate circuit,
An oscilloscope, comprising: a transmission / reception circuit that transmits the observed signal data stored in the memory and receives measurement conditions. 3. The eyeglasses for waveform display according to claim 1, wherein a pointer is displayed in the user's field of view through the eyeglasses, and the eyeglasses have means for confirming the eyepoint and blinking by a built-in eyepoint sensor, and the user can An oscilloscope characterized in that the measurement condition of the waveform collecting section is set by eye movement and blinking.