JPH11118539A - Method for displaying information of circular chart recorder and apparatus for executing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a circular chart recorder for easily displaying various information without losing features of a conventional circular chart recorder with a small size, lightweight and low cost. SOLUTION: The method for displaying information of a circular chart recorder having an information display means of information using a light emitting element on a rear surface of a circular chart CH for recording a measurement signal of the recorder comprises the steps of passing a light of the element of the display means through the chart, and displaying it on a surface of the chart, thereby displaying various types of information like DS1, DS2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a method for displaying information on a circular chart recorder and an apparatus for implementing the method. The information display method of the circular chart recorder of the present invention and the apparatus implementing the information display various kinds of information on the back side of the circular chart where the measurement signals are recorded, and read this information from the front side of the circular chart. is there.

[0002]

Circular chart recorders are widely used for recording and monitoring various measurement data because of their relatively high cost, small size and light weight. In the circular chart recorder, portions other than the circular chart paper portion are covered with a cover, but the area of the cover portion is small, and a large portion of the front area is occupied by the portion displaying the chart. Recently, digital technology has also been adopted in circular chart recorders, and various types of information other than signal recording have been easily processed.However, when such information is to be displayed on a circular chart recorder,
It is necessary to make a hole in the cover part to accommodate the display part. However, the area of the cover part of the circular chart recorder is small and it is difficult to take a sufficient display space. Providing the mechanism increases the cost of the recorder and impairs the features of the circular chart recorder that are small, light, and inexpensive.

[0003]

According to the present invention, an information display means for displaying information using a light emitting element is provided on the back surface of a circular chart in which a measurement signal of a circular chart recorder is recorded, and the light emitting element of the information display means for information is provided. Light is transmitted through the circular chart and displayed on the surface of the circular chart to display various information, making it easy to display various information without losing the features of the conventional circular chart recorder. The present invention has realized a method of displaying information on a circular chart recorder and a device for implementing the method.

[0004]

BEST MODE FOR CARRYING OUT THE INVENTION

FIG. 1 is an explanatory diagram showing the external appearance of the front of an apparatus for implementing the information display method of a circular chart recorder according to the present invention. In FIG. 1, CV is a cover of the circular chart recorder, and WD is a circular window provided on the cover CV, in which a transparent glass covering the circular chart portion is inserted. CH is a circular chart on which signals are recorded, and PN is a recording pen. DS1 and DS2 are information displayed on the circular chart CH.

[0005] In the circular chart recorder having such a configuration, the circular chart CH is rotated at a constant speed, and the recording pen PN changes one of them according to the magnitude of the input signal. Is recorded as analog data on the recording chart CH.
The state of the signal recorded on the recording chart CH is normally observed through a circular window WD provided on the cover CV. DS1 is information displayed on the circular chart CH.
Digital information of digital values such as a measurement signal value and an alarm set value is displayed. DS1 is information indicating the ON / OFF state of the power displayed on the circular chart CH. When the power of the chart recorder is turned on, the power indicator lamp in this window is turned on and the power is turned on. To show that

The information DS displayed on the circular chart CH
1 and DS2, display of light emission by a light emitting element such as an LED is performed on the back side of the chart CH, and the display of the light emission is displayed on the recording surface on the front surface of the chart CH through the paper of the chart CH. The chart CH is rotated at a constant speed, and the change over time of the input signal is recorded by the recording pen PN.
Is displayed on the chart CH at a predetermined position of the circular window WD through the chart CH regardless of the rotational position. Therefore, even when an input signal is recorded on the chart CH by the recording pen PN, digital information display and power-on display lamps are displayed through analog recording recorded by the recording pen PN. Even when the analog record and the display of the digital information of the information DS1 and DS2 overlap, these two records and the display can be clearly distinguished and identified.

Next, a specific method of displaying information on the circular chart recorder of the present invention will be described with reference to FIG. FIG. 2 is a cross-sectional view for explaining the configuration of an apparatus that implements the information display method of the circular chart recorder of the present invention. 2, the same parts as those in FIG. 1 are denoted by the same reference numerals.
WD is a window provided on the cover of the circular chart recorder, in which transparent glass covering the circular chart portion is inserted. CH is a circular chart on which signals are recorded, P
N is a recording pen. DSP1 and DSP2 are information display elements for generating information displayed on the circular chart CH. BP is the back plate of the circular chart, M
O is a chart drive motor, and CL is a lock mechanism for the circular chart CH.

The back plate BP has a circular chart CH.
And a hole H0 through which the axis of the chart drive motor MO penetrates, and an information display element D
Light passing holes H1 and H2 of SP1 and DSP2 are formed. The back plate BP of the circular chart is fixed to the main body (not shown) of the circular chart recorder. The axis of the chart drive motor MO penetrates through the hole H0 of the back plate BP to the front surface of the back plate BP,
A lock mechanism CL for the chart CH is attached to a portion of the axis of the chart drive motor MO adjacent to the front surface of the back plate BP. The chart CH is locked by the lock mechanism CL of the axis of the chart drive motor MO, and the front surface of the back plate BP is supported by the back plate BP and is driven to rotate at a constant speed in accordance with the rotation of the axis of the chart drive motor MO.

When the circular chart CH is driven to rotate, the position of the recording pen PN changes according to the magnitude of the input signal, and one of the recording pens PN is recorded on the chart CH supported by the back plate BP. As a result, the temporal change of the input signal is recorded on the recording chart CH. The information display element DSP1 is attached to the back plate BP at a position after the light passing hole H1 so that light of the light emitting display portion is projected from the light passing hole H1. The information display element DSP2 is attached to the back plate BP at a position after the light passage hole H2 so that light of the light emitting display portion is projected from the light passage hole H2.
For this reason, the light generated by the information display elements DSP1 and DSP2 respectively passes through the light passage holes H of the back plate BP.
1 and H2, the light is projected on the back surface of the portion of the chart CH above the light passing holes H1 and H2.

The light emitted from the information display elements DSP1 and DSP2 projected on the back of the chart CH passes through the chart CH and is placed on the surface of the chart CH.
Information on SP1 and DSP2 is displayed. Information display element D
If the intensity of the light generated by SP1 and DSP2 is such that it can transmit through the chart CH, the information of the information display elements DSP1 and DSP2 displayed on the surface of the chart CH is as follows:
Due to the diffusion effect of the fibers of the chart CH, it can be clearly recognized from an arbitrary angle even in a bright room. Various types of information added to the information display elements DSP1 and DSP2 are created as follows.

A circular chart recorder to which the present invention is applied performs analog recording, and is intended for a digital chart recorder having a built-in circuit such as a microprocessor capable of processing digital signals and performing digital processing of input signals. Become one of For example, servo circuits that use digital servos or servo circuits that use analog servos have analog-to-digital conversion circuits that digitally process input signals to generate various alarm signals. And so on. In a circular chart recorder having such a function, various kinds of digital information obtained by processing an input analog signal exist therein. The necessary digital information can be selected and displayed on the digital display element DSP1.

Also, in a conventional circular chart recorder which does not include a circuit capable of processing a digital signal,
It is necessary to display the power-on state. Conventionally, a power indicator lamp was provided on the cover of a circular chart recorder or the like to indicate the power-on status.However, special processing of the recorder cover or the like was required. In addition, there is a drawback that the area of the cover is increased because a space for the display element is required.
In the present invention, it is possible to easily display the power supply state by displaying a signal indicating the power-on state on the digital information display element DSP2.

FIG. 3 is a diagram for explaining the configuration of the information display element used in the present invention. FIG. 3A is a diagram illustrating the configuration of a digital information display element. In FIG. 3A, a DSP 1 is a digital information display element for displaying a 4-digit digital signal. LED1, LED2, LE
D3 and LED4 are digital display elements each using a light emitting diode (LED). Digital display element L
The ED1, LED2, LED3, and LED4 are constituted by a plurality of light emitting diodes that emit light according to the value of the input digital signal and emit light. 9 is displayed. Digital display element LED1, LED2, LE
D3 and LED4 are fixed in series to the case to constitute a 4-digit digital information display element DSP1, and display a 4-digit signal according to the digital signal applied thereto.

FIG. 3B is an explanatory view of the configuration of the information display element indicating the state of the power supply. In FIG. 3B, DS
P2 is a digital information display element for displaying a power-on state. LED0 is a display element using a light emitting diode (LED), and the display element LED0 is configured by a light emitting diode that is turned on and emits light when an input signal is applied. The state of the power supply is displayed by turning on the light emitting diode in response to a signal indicating the state of power-on. The display element LED0 is fixed to the case to form the information display element DSP2. By using the information display elements DSP1 and DSP2 having such a configuration, various kinds of information can be displayed from the back side of the circular chart on which the measurement signal is recorded, and this information can be displayed on the front side of the circular chart.

[0015]

As is apparent from the above description, according to the present invention, various kinds of information are displayed on the back surface of a circular chart on which measurement signals are recorded, and this information is read from the front surface of the circular chart. Since a variety of information can be displayed on the surface of the recording chart, even a circular chart recorder having a small cover area can take a sufficient display space without increasing the cost of the recorder. It is possible to realize a circular chart recorder that can easily display various types of information without losing the features of the conventional circular chart recorder, which is small, lightweight, and easy in cost.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing an external appearance of a front surface of an apparatus which implements an information display method of a circular chart recorder of the present invention.

FIG. 2 is a cross-sectional view for explaining a configuration of an apparatus that implements the information display method of the circular chart recorder of the present invention.

FIG. 3 is a diagram for explaining a configuration of an information display element used in the present invention.

[Explanation of symbols]

CV: Cover of circular chart recorder, WD
... Circular windows provided on cover CV, CH
..Circular charts, PN ... recording pens, DS
1, DS2: Information displayed on the circular chart CH, BP: Back plate of the circular chart,
MO: chart drive motor, CL: lock mechanism for circular chart CH, LED0, LED
1, LED2, LED3, LED4 ... Digital display element using light emitting diode (LED), H
1, H2: Light passing hole of back plate BP

Claims (8)

[Claims] 1. A method for displaying information on a circular chart recorder, wherein various information is displayed on the back side of a circular chart on which a measurement signal of the circular chart recorder is recorded, and the information is read from the front side of the circular chart. 2. A circular chart recorder in which digital information is displayed using a light emitting element on the back side of a circular chart on which a measurement signal of the circular chart recorder is recorded, and this information is read from the front side of the circular chart. Display method. 3. A circular chart in which information indicating a power-on state is displayed on a back surface of a circular chart in which a measurement signal of a circular chart recorder is recorded by using a light emitting element, and this information is read from a front surface of the circular chart. Information display method of the chart recorder. 4. An information display means using a light emitting element provided on the back side of a circular chart on which a measurement signal of a circular chart recorder is recorded, and light of the light emitting element of the information display means is transmitted through the circular chart to obtain a circular chart. An information display device of a circular chart recorder which displays digital information by displaying on a surface of a circular chart recorder. 5. A digital information display means using a light emitting element provided on the back of a circular chart in which a measurement signal of a circular chart recorder is recorded, and light of the light emitting element of the digital information display means is transmitted through the circular chart. An information display device of a circular chart recorder for displaying digital information by displaying the information on the surface of a circular chart. 6. An information display means for displaying a power-on state using a light-emitting element provided on a back surface of a circular chart on which a measurement signal of a circular chart recorder is recorded, and information of information indicating the power-on state. An information display device of a circular chart recorder, wherein information of a power-on state is displayed by transmitting light of a light emitting element of a display means through a circular chart and displaying the light on the surface of the circular chart. 7. A digital information display means using a light emitting diode provided on the back of a circular chart on which a measurement signal of a circular chart recorder is recorded, and light of the light emitting diode of the digital information display means is transmitted through the circular chart. An information display device of a circular chart recorder for displaying digital information by displaying the information on the surface of a circular chart. 8. An information display means for displaying a power-on state using a light-emitting diode provided on a back surface of a circular chart in which a measurement signal of a circular chart recorder is recorded, and information of information indicating the power-on state. An information display device for a circular chart recorder, wherein information indicating a power-on state is displayed by transmitting light of a light emitting diode of a display means through a circular chart and displaying the light on the surface of the circular chart.