JPS58171621A - Measuring device having indicator - Google Patents

Abstract

PURPOSE:To indicate contactlessly, reduce a driving motor at its size and perform the display of an indicator and recording independently by making heat sensitive and optical sensors on heat generating and light emitting element groups sensitive to the operation of the elements and moving the sensors. CONSTITUTION:A multielement bar graph 7 is driven by a micro-processor 1 and a positional element 7a corresponding to the process input value of an AD converter 61 is selected to perform heat generation and light emitting. Simultaneously with said operation, a processor drives a motor 2 to change the position of a sensor 8, retrieves a heat sensitive point and a photodetective point from the sensor output values obtained from an AD converter 62 and positions the sensor 8 on a peak point of the sensor output. An indicator is fitted to the sensor 8, and if necessary, the indicator is directly connected or followed. Since the sensor 8 and the indicator are only guided by the bar graph 7 and are contactless with it, the driving force of the motor 2 can be reduced and the size can be also reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a measuring device having a pointer, for example, an indicator that indicates a professional measurement using a pointer and a scale plate, or an indicator that uses a recording paper.
This is an improved indication method for the recording needle.

FIG. 1 shows a conventional example of an indicating structure using a servo system.

In the figure, 1 is a microprocessor, 2 is a motor, 3 is a resistance wire that forms an N/analog conversion section, 4 is a DC voltage source that is a voltage standard section, 5 is a slider that is an analog position derivation section,
61 and 62 FiAD converters, 600 is a process input.

In operation, the slider 5 is moved by the motor 2 in sliding contact with the resistance wire 3, and the microprocessor 1 inputs the process input values obtained from the respective AD converters 61 and 62 and the slider 5.
The motor 2 is controlled so that the slider 5 is positioned so that the position signals coincide with each other. As a result, the position of the slider 5 indicates the process amount, and in the case of an indicator, the pointer is attached to the slider 51C, and in the case of an indicator/recorder, in addition to the pointer, the pen and dot mechanism are attached to the slider. Attach to mover 5.

However, in the above-mentioned conventional indicating method, since the motor 2 moves the slider 5 that is in contact with the resistance wire 3, the force of the motor 2 needs to be large enough to overcome the contact force. There is a limit.

Furthermore, since the slider 5 and the resistance wire 3 are always in sliding contact, poor contact is unavoidable over a long period of time. Furthermore, in the case of an indicator/recorder, the pointer and dotting mechanism are inseparable, so the pointer changes position rapidly every time the process input changes, especially in the case of multi-point recording (multi-point input).
It is extremely difficult to know the major process quantities by looking at the guidelines.

#JFi of the present invention In view of the problems of the prior art described above, the present invention aims to reduce the load on the motor, and further aims to separate the instruction and recording mechanisms.

The first purpose can be achieved by making the heat generation position or light emission position 11 on the heat or light multi-element bar graph correspond to the input process quantity, searching this position with a sensor, and connecting a pointer to this sensor. . The second objective can be achieved by applying thermal paper or photosensitive paper to the multi-element bar graph and moving it relative to the other over time, and the sensor only needs to perform a search operation for the desired process input.

The present invention will be described below with reference to the drawings. FIG. 2 shows an indicator according to an embodiment of the present invention, and in the figure, 7 is an element group consisting of a large number of heat generating elements or light emitting elements arranged in a straight line;
It is a so-called multi-element bar graph. 8 is a sensor;
A thermal sensor or an optical sensor is used depending on the element of the multi-element bar graph, and the bar graph can be moved along the multi-element bar graph 7 by a motor 2. The multi-element bar graph 7 is driven by the microprocessor 1, and an element (segment) 7a at a position corresponding to the process input value obtained from the AD converter 61 is selected to generate heat or emit light. At the same time, the microprocessor 1 motor 2'1 is driven to change the position of the sensor 8, and the AD converter 6
The heat sensitive point or photosensitive point is searched from the sensor output value obtained from step 2. That is, the sensor 8t is positioned at the peak point of the sensor output. A pointer (not shown) is attached to this sensor 8, but it is configured to be directly connected and linearly moved as necessary.

According to the above structure, the sensor 8, in other words, the pointer is only guided by the multi-element bar graph 7 and is not in contact with it, so that in addition to the driving force of the motor 2, as shown in FIG. Although a planar aggregate (dot matrix) is commercially available, there is no problem in using this. Rather, in the case of multi-point recording, there is an advantage that the recorded pattern can be seen quickly depending on the type of input.

The above embodiments are related to indicators, but since the heat generating points and light emitting points of the multi-element bar graph 70 correspond to process inputs, by using thermal paper or photosensitive paper as a recording paper, a pen or a dotting mechanism can be used. An indicator/recorder that does not require the following can be easily realized. In this case, the paper feeding mechanism may be the same as the conventional one, and the thermal paper or photosensitive paper is moved over time while being applied to the multi-element bar graph 7, and the heat generating points and light emitting points are recorded as process quantities.

In the case of multi-point recording, the multi-element bar graph 7 can be driven by time division in response to the process input of the number of pots. In this type of instruction/recording, the guideline instruction is independent of the recording, so especially in the case of multi-point recording, the sensor 8 is operated to search only when the main process input is manually input to the multi-element bar graph 7. Whereas in the past, the position of the pointer would change dizzyingly, all inputs can be recorded while only the main process quantities are displayed on the pointer. In the case of an indicator/recorder, it is convenient to prepare the multi-element bar graph 7 that serves as a guide for the sensor 8 and the multi-element bar graph used for recording separately, as this increases the degree of freedom in the structure of the device.

As explained above, since the present invention is a non-contact indicating system, the motor for driving the hands can be small. In addition, since it is a non-contact indication method, the tin needle display and recording can be performed independently, and only the main process quantities can be displayed with the needle while recording at multiple points.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an example of a conventional instruction mechanism, FIG. 2 is a block diagram showing an embodiment of the present invention, and FIG. 3 is a schematic configuration diagram showing a dot mark (IJ) type element group. . In the drawing, 1 is a microprocessor, 2 motors, 61 and 62 are AIJ converters, 6nOi7t process inputs, 7 multi-element bar graphs, and 8 sensors. Tokiuchi applicant Hokushin Electric Manufacturing Co., Ltd. Patent attorney Shibu Mitsuishi (1 other person)

Claims (3)

[Claims] (1) An element group in which a large number of elements that emit heat or light are arranged in a line, a sensor that is movable along this element group and is sensitive to the operation of the elements, a pointer connected to this sensor, and a sensor. a drive mechanism that moves the element; and a control means that operates an element at a position corresponding to the value of the input signal among the elements and controls the drive mechanism based on the output of the sensor to cause the sensor to follow the position of the element. A measuring device consisting of. (2) An element group in which a large number of elements that emit heat or light are arranged in a line, and a cell that is movable along this element group and is sensitive to the operation of the elements, and a cell that is connected to this cell. A drive mechanism that moves the pointer and the sensor, and a drive mechanism that operates the element at a position corresponding to the value of the input signal among the element group and controls the drive machine horizontal pipe based on the output of the sensor to move the sensor. a control means for following the position; and a control means for controlling the element group according to the operating element of the heat generating or light emitting element group in which the element group or separately from the element group or the element at the position corresponding to the value of the input signal is activated by the control means. A measuring device consisting of a recording paper that memorizes the position of the machine. (3) The above-mentioned control means is a means for operating a group of elements by time-dividing input signals from multiple points, while causing the position of the sensor to follow only an arbitrary input signal. The measuring device according to item 2.