JPH07110361A - Logic measuring apparatus - Google Patents

Abstract

PURPOSE:To execute a simple check of connection or input irrespective of the time of measuring or non-measuring by informing a user of a logic of an input signal after the logic of the signal is calculated by flashing of LEDs of a display unit. CONSTITUTION:An LED row 71 as a flashing display unit for displaying a logic of input signals, a display screen 72 for displaying various waveforms and operating messages 73, 75, etc., operation switches 74, 76 and a record sheet 6 in which various waveforms 61, 62, etc., are drawn are provided in front of a measuring apparatus. An LED row 71 similar to the flashing display unit provided on the front side, and an input terminal row 77 for inputting various signals into the apparatus are provided on the back side of the apparatus. A logic of the input signals after the logic of the input signals is calculated is reported to a user by flashing of the LEDs of the display unit.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a logic measuring device for comparing a measured input signal or the like with a predetermined set value and displaying or recording the logic of the input signal.

[0002]

2. Description of the Related Art In this type of conventional logic measuring device,
The input signal to be logically operated is configured to be displayed or recorded on the display screen or the recording paper after the logical operation is performed by the arithmetic unit in the apparatus. Although FIG. 2 also shows a logic measuring apparatus according to an embodiment of the present invention, generally, this type of logic measuring apparatus is provided with an input terminal row 77 for receiving an input signal on the back side thereof.

[0003]

In such a logic measuring device, it is not clear whether or not the logic of the input signal is taken without error unless it is displayed or recorded on the display screen 72 or the recording paper 6. There was an inconvenience. Further, as described above, when the input terminal row 77 of this type of logic measuring apparatus is provided on the back surface of the apparatus, the user connects a desired signal to the input terminal row 77 to connect the signal. However, there is a drawback in that the logic of the input signal must be displayed or recorded on the display screen 72 or the recording paper 6 for confirmation when making the confirmation. The present invention aims to improve these points.

[0004]

Therefore, in the present invention, in the logic measuring device for displaying or recording the logic of the input signal by comparing the input signal with a predetermined set value, It is characterized in that a blinking display device is provided for notifying the user of the logic of the input signal after the logic of the input signal is calculated by blinking the logic.

[0005]

A flashing display device including, for example, an LED is provided after the logical operation of the input signal. By providing this blinking display device at a predetermined portion of the device, for example, in the vicinity of the input terminal row, the connection confirmation by the user can be performed very easily.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to one embodiment of the drawings. 1 and 2 show a first embodiment device of the present invention. FIG. 1 is an overall circuit configuration diagram thereof, and FIG. 2 is an external configuration diagram of the device. Please refer to FIG. The logic measuring device of the present invention includes an LED array 71 as a blinking display device for displaying the logic of an input signal on the front side of the device, a display screen 72 for displaying various waveforms and operation messages 73, 75, and the like.
The recording paper 6 on which the operation switches 74 and 76 and various waveforms 61 and 62 are drawn is provided. Further, on the back surface of the logic measuring device of the present invention, an LED array 71 similar to the blinking display device provided on the front surface and an input terminal array 77 for taking in various input signals into the device are provided.

The display screen 72 of this device is provided with a large-area waveform display field, an operation selection display field 73 displayed below, and a parameter selection display field 75 displayed to the right. The operation selection display column 73 is for various operations assigned to various functions of the apparatus (for example, amplification of a signal to be logically operated, set value as a comparison value of signals to be logically operated, sampling of signals to be logically operated. The rate and the like) are individually displayed, and in the parameter selection display field 75, parameters and the like to be selected in the operation when the individual operation in the operation selection display field 73 is selected are individually displayed. Then, each selection switch group 74 is placed at a position corresponding to each operation displayed in the operation selection display field 73 and each parameter displayed in the parameter selection display field 75.
76 is provided. The operation update key 78 and the parameter update key 79 are switches for sequentially updating and displaying various operation message groups and each parameter group collected for each group. For example, it is assumed that operations related to processing of signals to be logically operated are grouped and displayed corresponding to each operation selection switch group 74. That is, "amplification degree setting of signal to be logically operated" corresponding to the leftmost key switch of the operation selection switch group 74, "comparison value setting of signal to be logically operated" corresponding to the adjacent key switch, It is assumed that the operation name "..." is displayed.
At the stage when the user selects the "set comparison value of signal to be logically calculated" operation, the settable comparison values group is divided and displayed in the parameter selection display field 75. When the desired comparison value is not displayed in this state, the parameter update key 79 is operated to display the comparison value group of the next group. The user operates a desired selection switch of the parameter selection switch group 76 arranged corresponding to each parameter value displayed in the parameter selection display field 75 to set a necessary parameter. As described above, the apparatus of the present invention displays various operations and their selection parameter groups in association with each other, and the selection switch is provided corresponding to each individual display, so that the operability is remarkably improved as compared with the conventional one. There is. A so-called touch panel overlaid on the operation display area 74 and the parameter display area 75 may be used as the key switch group.

The input terminal array 77 of this device is composed of a plurality of input sections. The plurality of inputs include a plurality of analog signal inputs for capturing an analog signal to be measured into the device and a plurality of logic signal inputs for displaying or recording the logic state of the analog or digital input signal under measurement. have. The logic signal input section is
In this embodiment, a total of 4 groups are provided with 4 channels as one group. As shown in FIG. 1, all the logic signal input parts (10, 20, 30, 40, ...) Have the same configuration, and for example, in the first channel 10, logical operation should be performed. It has a comparator 11 to which an input signal and a preset value (reference 1) are inputted. The output of this comparator 11 is sent on the one hand to the LED 14 which is branched via the resistor 12, and on the other hand to the sampling block 13.

A signal to be logically operated is input to one input terminal of the comparator 11, and a set value signal preset by the user is input to the other input terminal. When the signal to be logically calculated is larger than the set value, the “H” signal is output, and when the signals are equal to or smaller than the set value, the “L” signal is output from the comparator 11. This logic signal from the comparator 11 causes the LED 14 of the LED string 71 to blink through the resistor 12. Further, this logic signal is output to the sampling block 13 and is sampled at a predetermined sample rate, and the CPU 4
Entered in. After these logic signals or signals under measurement (not shown) are input, the CPU 4 performs a predetermined calculation, and records these respective signals via the illustrated head drive circuit 8 and thermal head 9 as shown in FIG. Record on paper 6 as analog record 61, logic record 62,
Alternatively, similar signal waveforms are displayed on the display screen 72 shown in FIG. 2 via a display control circuit or the like (not shown).

FIG. 3 relates to the second embodiment of the present invention, and is different from the above-described first embodiment in that the logic signal for the LED i4 that blinks and displays the logic of the signal is output from the comparator i1. It is configured so that it can be selectively taken out from both the latter stage and the latter stage of the sampling block i3. With such a configuration, even if the sampling timing is extremely slow (for example, sampling is performed once every 10 seconds), there is an advantage that the blinking display device operates at the timing taken by the CPU 4.

[0011]

As described above, according to the present invention, since the blinking display device including the LED for blinking and displaying the logical value of the input signal is provided in the latter stage of the output of the comparator, during measurement and during non-measurement (display is also recorded. You can perform a simple check of connection or input regardless of (if not). Further, by arranging this blinking display device in the vicinity of the input terminal row, there is an advantage that the user can confirm the connection while connecting.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a logic measuring device according to a first embodiment of the present invention.

FIG. 2 is an explanatory diagram showing an appearance of a logic measuring device of the present invention.

FIG. 3 is a signal input unit according to a second embodiment of the present invention.

[Explanation of symbols]

 11-41: Comparator 12-42: Resistor 13-43: Sampling block 14-44, 71: LED array 4: Control circuit (CPU)

Claims (1)

[Claims] 1. A logic measuring device for displaying or recording the logic of an input signal by comparing the logic of the input signal with a predetermined set value, the input after the logic of the input signal is calculated. A logic measuring device comprising a blinking display device for notifying a user of the logic of a signal by blinking the signal.