JPH055450Y2 - - Google Patents

Description

[Detailed Description of the Invention] Technical Field The present invention relates to an X-Y recording device, and more particularly to a technique for preventing misalignment of the writing position on recording paper.

PRIOR ART AND THE PROBLEMS It is equipped with a mounting table on which a recording paper is placed, and a carriage that is moved in the X direction and the Y direction with respect to the recording paper, and a writing instrument provided on the carriage is used to write on the recording paper. An XY recording device of the type is known.

However, in such conventional X-Y recording devices, the recording paper expands and contracts depending on temperature and humidity, or when the recording paper is placed on the mounting table, the recording paper moves away from the predetermined placement position. Due to this, when figures, symbols, characters, etc. are written at predetermined locations on the recording paper, there is an inconvenience in that the writing positions of the figures, symbols, characters, etc. are shifted. For example, if you use recording paper that has been stored in a warehouse at the same temperature as the outside air in an air-conditioned room, or if you use recording paper that has been airtightly packed in a humid room, The recording paper stretches significantly during recording, causing the writing position to shift.

On the other hand, as described in Japanese Patent Application Laid-Open No. 55-43678, the edge of the roll paper is detected by a fixed-position optical sensor and the deviation in the width (Y-axis) direction of the paper is corrected. A technique has been proposed to fill in the
This type of technology not only does not compensate for misalignment in the X and Y directions of a cut sheet of recording paper placed on the mounting table of an However, there was a drawback that it was not possible to correct the misalignment between the recording area defined by the printing line on the recording paper and the edge of the recording paper.

Means for Solving the Problems The present invention was developed against the background of the above-mentioned circumstances, and its gist is to provide a mounting table on which a cut sheet of recording paper is placed, and a In an X-Y recording device, the X-Y recording device is equipped with a carriage that can be moved in the X direction and the Y direction, and a writing instrument attached to the carriage writes in a writing area defined in advance by printing on the recording paper, (a)
In order to detect a reference line printed at a fixed relative position to the recording area on the recording paper and perpendicular to each other, light is irradiated from the carriage toward the recording paper, and the reflected light from the recording paper is emitted as described above. (b) carriage position detection means for detecting the position of the carriage; (c) driving the carriage prior to writing in the writing area; determining the position of the reference line based on the position of the carriage detected by the carriage position detection means when the reference line is detected, and writing with the writing instrument in the writing area based on the position of the reference line. and control means for causing the execution.

As a result, in the control means, the carriage is driven prior to writing in the writing area, so that when the reference line is detected by the optical detection means, the carriage position is detected by the carriage position detection means. The position of the reference line is determined based on the position of the carriage, and the writing instrument is used to write in the writing area based on the position of the reference line. In this way, in the writing area on the recording paper, entries are made based on mutually orthogonal reference lines printed at fixed relative positions, so not only are there variations in the placement position of the recording paper, but also variations in the cutting process. Regardless of variations in the relative position between the edges of the recording paper and the writing area that occur due to It will be resolved.

Embodiment Hereinafter, an embodiment of the present invention will be described in detail based on the drawings.

FIG. 1 is a diagram showing the system configuration of an automatic anesthesia record sheet filling device including an X-Y plotter 22, which is an embodiment of the present invention, and 10 is a multifunctional automatic blood pressure monitor equipped with an electrocardiograph. . Electrodes 12 and a cuff 14 are connected to the automatic blood pressure monitor 10, and in response to periodic or manual input operations, biological information of the subject, such as systolic and diastolic blood pressure values, pulse rate, respiration rate, etc., is connected to the automatic blood pressure monitor 10. is automatically measured, and a symbol representing the measured value is displayed on the automatic blood pressure monitor 10.
The signal is output from the controller 16 to the controller 16. The control device 16 determines the recording position within the two-dimensional diagram recording area 20 provided at a predetermined position on the anesthesia recording paper 18 based on the input signal, and writes the information in the X-Y plotter 22 every time the input signal is supplied. let Note that the control device 16 may be provided integrally with the automatic blood pressure monitor 10 and the XY plotter 22.

The anesthesia record paper 18 is used to record trends in biological information of the subject under anesthesia, administered drugs, etc. over time.
Two-dimensional diagram recording area 2 in a certain place from the edge of the
0 is set. In the two-dimensional chart recording area 20, grids are usually printed at regular intervals. For example, as shown in FIG. Used as an axis to indicate values.

As shown in detail in FIG.
4, a moving table 28 that is driven and positioned in the X direction by an The carriage 3 is guided in the Y direction by a guide rod 30 and positioned by a Y direction pulse motor 32.
4, and a pen gripping device 38 that is provided on the carriage 34 and is moved up and down by the up and down solenoid 36.
It is equipped with The pen gripping device 38 is provided with a semicircular notch 40 and is used to selectively take out a sensor pen 48 and writing pens 50, 52, and 54, which will be described later, depending on the purpose. Above mounting stand 2
4 includes a positioning plate 37 for accurately positioning the anesthesia recording paper 18 to a predetermined constant position.
is fixed, and an air suction means or electrostatic adsorption means is used to fix the anesthesia recording paper 18 on the mounting table 24 as necessary. Further, a paper sensor 42 for detecting that the anesthesia recording paper 18 is placed on the mounting table 24 is embedded.
This paper sensor 42 consists of a light emitting element that projects light toward the back side of the anesthesia recording paper 18 and a light receiving element that detects reflected light from the anesthesia recording paper 18. The presence or absence of the anesthesia record paper 18 on the table 24 is detected, and
A symbol representing the presence/absence is supplied to the control device 16.

The X-Y plotter 22 also includes a pen support stand 4.
4 is provided in a fixed position, and a sensor pen 48, writing pens 50, 52, and 54 are supported in four semicircular notches 46 formed in this pen support base 44, respectively. sensor pen 48
As shown in FIG. 4, the cylindrical portion 62 has an annular first flange portion 56, a second flange portion 58, and a third flange portion 60, and is screwed into the open upper end portion of the cylindrical portion 62 to form a cylindrical portion. A lid portion 64 that closes the opening of the portion 62
and a light-shielding tube 66 fixed to the lower end of the tube portion 62.
The cylindrical portion 6 is inserted through a hole (not shown) penetrating the lid portion 64.
2 and at the lower end of the cylindrical portion 62.
Fiber cable 68 guided into 6
The first flange portion 56 has a slightly larger diameter than the notch 46 of the pen support base 44, and the cylindrical portion 62 having a slightly smaller diameter than the notch 46 is housed within the notch 46. First flange portion 5
The sensor pen 48 is supported by the pen support base 44 by the lower surface of the sensor pen 6 coming into contact with the upper surface of the pen support base 44 . Note that the writing pens 50, 52, and 54, like the sensor pen 48,
The pen support base 4 is composed of a first flange part, a second flange part, a third flange part, a cylinder part, and a lid part.
4, three different colors of ink, for example, red, blue, and yellow, are filled from the opening of the cylinder with the lid removed, and the ink is led out instead of the light-shielding cylinder 66 at the tip. It differs from the sensor pen 48 in that it is provided with a pen tip.

Further, the sensor pen 48 and the writing pens 50 to 54 have cylinder portions having a slightly smaller diameter than the notch 40 formed in the pen gripping device 38, and the second flange portion and the third flange portion have a diameter slightly smaller than the notch 40 formed in the pen gripping device 38.
Since the diameter is slightly larger than that of the sensor pen 48 and the writing pens 50 to 5, the cylindrical portion is accommodated in the notch 40 and the lower surface of the third flange portion comes into contact with the upper surface of the pen gripping device 38.
4 is adapted to be held by a pen holding device 38.

As shown in FIG. 5(b), the fiber cable 68 is made by arranging six light-receiving fibers 72 around one light-receiving fiber 70 and bundling them together. As shown in Figure a, it extends within the light-shielding tube 66 to a position slightly a predetermined distance away from the tip edge of the light-shielding tube 66. The fiber cable 68 receives light after passing through a hole 76 formed in a guide member 74 (shown in FIGS. 1 and 3) whose lower end is fixed to the side surface of the X-Y plotter 22 outside the sensor pen 48. The light-receiving element 78 and the light-emitting element 80 provided on the side surface of the X-Y plotter 22 are connected to the tips of the light-receiving fiber 70 and the light-emitting fiber 72, respectively. The sensor pen 48, the light receiving element 78, the light emitting element 80, and the fiber cable 68 connecting them are connected to the carriage 3.
It corresponds to a light detection means that irradiates light from 4 toward the anesthesia recording paper 18 and receives the reflected light from the anesthesia recording paper 18 in the carriage 34.

When the sensor pen 48 configured in this way is scanned over the anesthesia recording paper 18, the light emitted from the light-emitting fiber 72 is reflected from the anesthesia recording paper 18, as shown by the arrow in FIG. Light is detected by the light receiving element 78 via the light receiving fiber 70. Then, the signal representing the amount of reflected light is
The light is output from the light receiving element 78 to the discriminator 79 via the amplifier 77 shown in FIG. When the grid in the two-dimensional chart recording area passes, the amount of reflected light becomes smaller than the pre-stored amount, that is, the amount of reflected light at the blank part of the anesthesia recording paper 18, so the discriminator 79 detects the line, and the line is detected by the classifier 79. A corresponding pulse signal is supplied to an I/O port 96 of a control circuit 16, which will be described later. Note that the dimension between the lower end edge of the light-shielding tube 66 and the lower end surface of the fiber cable 68, that is, the distance dimension h between the fiber cable 68 and the anesthesia recording paper 18, is the same as that of the light-receiving fiber 70 and the light-emitting fiber 72. It can be changed depending on the condition such as the diameter.

Further, the XY plotter 22 is provided with a control circuit shown in FIG. In the figure, the signal supplied from the control device 16 to the input port 82 represents the entry position and symbol to be entered in the two-dimensional chart recording area 20, and the CPU 84
The input signal is processed according to the program stored in advance in the ROM 88 while utilizing the memory function of the RAM 86, and the symbol indicated by the input signal is placed at the writing position indicated by the input signal using one of the three writing pens. X-direction pulse motor 2 as written by
A drive circuit 90 supplies drive power to the Y-direction pulse motor 32, and a drive circuit 9 supplies drive power to the Y-direction pulse motor 32.
2. Supply a drive signal to the drive circuit 94 that supplies drive power to the upper and lower solenoids 36.

The control device 16, as shown in FIG.
Port 96, CPU 98, ROM 100,
RAM 102, clock circuit 104, confirmation key 1
06, a start/stop push button 108, and an input console 112 having a replacement command lamp 110, etc., and the CPU 98 processes input signals according to a program stored in advance in the ROM 100 while utilizing the storage function of the RAM 102. Then, a signal indicating the entry position in the two-dimensional diagram recording area 20 and a signal indicating the type of symbol to be entered are sent to the X-Y plotter 2.
Supply to 2.

The operation of the control device 16 will be explained below.
The flowchart shown in FIG. 9 shows a control routine that is executed when the start/stop push button 108 is pressed.This control routine is then executed when the start/stop push button 108 is pressed. Execution is stopped.

Normally, the automatic blood pressure monitor 10 is activated prior to operating the activation/stop button 108, and biological information such as the blood pressure value, pulse rate, and respiration rate of the subject is automatically and repeatedly measured in a fixed cycle. be done. Next, when the start/stop push button 108 is pressed, step S1 is first executed and various initial processes are executed. In this initial processing, for example, a recording area detection routine shown in FIG. 10 is executed to automatically set the position of the two-dimensional diagram recording area 20 and its vertical and horizontal dimensions.

The recording area detection routine is for automatically detecting the position and size of the two-dimensional diagram recording area 20 by scanning the sensor pen 48 with the carriage 34. First, step SK1
, the carriage 34 is moved to the pen ejection position near the pen support base 44, and the pen gripping device 38 accommodates the cylindrical portion 62 between the second flange portion 58 and the third flange portion 60 of the sensor pen 48. , the sensor pen 48 supported by the pen support stand 44 is taken out, and a signal for positioning the sensor pen 48 at the origin is sent to the X-Y plotter 22.
As a result, the carriage 34 moves to a position (X _p ,
Y _p ), and the contents of registers X and Y (not shown) are cleared to zero. Each time the carriage 34 moves one step in the positive direction in the X or Y direction, 1 is added to these registers
Subtracted for each movement in the negative direction. The contents of the registers X and Y represent the position (X coordinate value and Y coordinate value) of the carriage 34, and therefore correspond to means for detecting the position of the carriage 34. In the following step SK2, 2D chart recording area 2
0 predetermined center position in the Y direction (X _p , Y _c )
The carriage 34 is moved in the X direction by executing step SK3. In this process, the amount of reflected light received by the light-receiving element 78 via the light-receiving fiber 70 is determined by the discriminator 79, and a corresponding pulse signal is output. Since grids are printed at intervals (for example, 3 mm), pulse signals at constant intervals are output while passing through the two-dimensional chart recording area 20. In step SK4, this phenomenon is utilized to determine the position (X ₁ , Y c ) when the first one of the pulse signals at regular intervals occurs and the position (X ₂ , Y _c ) when the last one _occurs . ) are stored.

In step SK4, for example, the earliest and final panel detection routine shown in FIG. 11 is executed. At step SP1, generation of a pulse signal from the discriminator 79 is determined. If a pulse signal does not occur, step SP1 is repeatedly executed to enter a standby state, but if it is determined that a pulse signal has occurred, step SP2 is executed, and the position of the carriage 34 at the time of generation is stored in the register. X and register Y
The contents of are read as positions in the X and Y directions. In the following step SP3, an algorithm for detecting the first equally spaced pulse and the last equally spaced pulse is executed. This algorithm detects the first and last of a series of equally spaced pulse generation positions stored in step SP2. At step SP4, it is determined whether the final equally spaced pulse has been detected.
If it is determined that it is not detected, the above step is performed.
Steps SP1 and subsequent steps are executed again, but if it is determined that a pulse has been detected, step SP5 is executed and the position of the carriage 34 (X _{1 , Y c ) at the time of the occurrence of the first evenly spaced pulse and the position (X 1} , Y _c ) of the carriage 34 at the time of the occurrence of the last equally spaced pulse are determined. The positions (X ₂ , Y _c ) of the carriage 34 are each stored.

Returning to FIG. 10, by executing the following step SK5, the carriage 34 moves to a predetermined position (X _c , Y _p ) so as to be located at the center of the two-dimensional chart recording area 20 in the X direction. Carriage 3 is reached by executing the following step SK6.
4 is moved in the Y direction. And the steps
In SK7, as in step SK4, the discriminator 79
The position (X _c , Y ₁ ) at which the first one of the pulse signals from 2000 is generated and the position (X _c , Y ₂ ) at which the last one is generated are stored. As a result,
To explain using FIG. 2, in the step SK4, the positions of the horizontal axis 23 of the four sides surrounding the two-dimensional chart recording area 20 and the line 27 parallel thereto are detected, and in the step SK6, The position of the vertical axis 21 of the four sides surrounding the two-dimensional chart recording area 20 and a line 25 parallel to this is detected. That is, the vertical axis 21 and a line 25 parallel to this, and the horizontal axis 23 and a line 27 parallel to this are detected as reference lines having a constant relative positional relationship with respect to the two-dimensional chart recording area 20, and these are detected. The positions of each are memorized.

Then, in step SK8, the positions (X ₁ , Y _c ), (X ₂ , Y _c ),
From (X _c , Y ₁ ) and (X _c , Y ₂ ), based on the premise that the vertical axis 21 and horizontal axis 23 of the two-dimensional diagram recording area 20 are parallel to the Y direction and the X direction, Position of upper left point P ₁ (X ₁ , Y ₁ ), lower right point P ₂ position (X ₂ , Y ₂ ), lower left point of diagram recording area 20
The position of P ₃ (X ₁ , Y ₂ ) and the position of the upper right point P ₄ (X ₂ , Y ₁ ) are determined and
Diagram size recording area 1 provided in RAM 102
14. Each of these points P ₁ , P ₂ , P ₃ ,
P ₄ represents the position and size of the two-dimensional diagram recording area 20.

Returning to FIG. 9, in the initial processing of step S1, the position and size of the two-dimensional chart recording area 20 are displayed as described above, and at the same time, the sensor pen 4
8 is returned to the predetermined position on the pen support stand 44. In step S2, it is determined whether a symbol representing biological information has been supplied from the automatic blood pressure monitor 10. If a signal is not supplied, step S2 is repeatedly executed to enter a standby state, but if a signal is supplied, step S3 is executed, the data indicated by the input signal is read, and the input time is set in the clock circuit 104. is read based on the output signal of

In the next step S4, the chart storage area 11
Based on the actual position and its vertical and horizontal dimensions of the two-dimensional chart recording area 20 stored in step S4 and the input time and data read in step S3, the entry position and entry symbol in the two-dimensional chart recording area 20 are determined. This determination method involves determining a line parallel to the vertical axis 21 that passes through a position on the horizontal axis 23 indicating real time corresponding to the input time, calculating a position indicating the size of the input data on the vertical axis 21 where the full-scale value is set, and determining this position on the parallel line. The full-scale values of the vertical axis 21 and the horizontal axis 23 are stored in advance.

Next, in step S5, it is determined whether the entry position determined in step S4 is outside the frame of the two-dimensional chart recording area 20 or not. This determination is solely for determining whether or not the writing position deviates from the full scale value of the time axis (horizontal axis 23). Normally, the writing position is within the frame, so the following step S6 is executed and the signals indicating the writing position and symbol are
At the same time as being output to the plotter 22, among the three writing pens 50 to 54 supported by the pen support stand 44, the color corresponding to the type of biological information represented by the data indicated by the input signal, for example, the biological information. A writing pen with red ink for blood pressure values, yellow for pulse rate, and blue ink for medication administration is selectively removed by pen gripping device 38 of carriage 34. Then, using the selected writing pen, the measured value of the biological information supplied from the automatic blood pressure monitor 10 is written at the position indicated by the signal with the symbol indicated by the signal and in a color corresponding to the type of biological information. . For example, immediately after startup, symbols are written along line a in FIG. 2, and after 10 minutes, symbols are written along line b. In FIG. 2, the symbol >-< indicates the systolic blood pressure value and the diastolic blood pressure value, the symbol ◯ indicates the respiratory rate, and the mark . indicates the pulse rate, which are respectively written in red, yellow, and blue. Further, the time is written near the time axis in the two-dimensional chart storage area 20 every time data is entered or every predetermined number of times.

When the above steps are repeatedly executed, symbols indicating blood pressure values and other symbols as shown in FIG. 2 are sequentially written on the time axis in the two-dimensional chart recording area 20, and trends in biological information are recorded. Is displayed. If the elapsed time after startup exceeds the preset full scale time of the time axis while such a state continues, in step S5, the entry position determined in step S4 is changed to the time axis. (horizontal axis 23) is determined to be outside the full scale. In this state, step S7 is executed, an alarm output indicating that the anesthesia recording paper 18 should be replaced is outputted, the replacement command lamp 110 is turned on, and an alarm sound is emitted from a sounding device (not shown). In the following step S8, the full scale of the time axis is automatically set anew, and a new entry position is determined based on the new full scale. This new full-scale value will be the time after a period of time corresponding to the length of the time axis has elapsed from the current time. Then, in step S9, it is determined whether the anesthesia recording paper 18 should be replaced. This determination is made when the signal from the paper sensor 42 turns off and then turns on. If the anesthesia recording paper 18 is not replaced, step S9 is repeatedly executed and a standby state is entered, but when the anesthesia recording paper 18 is replaced, the steps from step S6 onward are executed.

As described above, according to this embodiment, the actual position and dimensions of the two-dimensional diagram recording area 20 are determined based on the reference line optically detected by the sensor pen 48 held by the carriage 34, that is, the vertical axis 21 and the horizontal axis. Axis 2
3, etc., and stored in the diagram dimension storage area 114. Then, a symbol representing biological information is written in a position determined based on the actual position and dimensions of the two-dimensional diagram recording area 20. In other words, symbols representing biological information are written in the two-dimensional chart recording area 20 based on reference lines (vertical axis 21, horizontal axis 23, etc.) located at a constant relative position to the two-dimensional chart recording area 20. As a result, due to variations in the position of the two-dimensional chart recording area 20 due to printing misalignment, expansion and contraction of the anesthesia recording paper 18, and misalignment of the anesthesia recording paper 18 on the mounting table 24, the two-dimensional Even if the chart recording area 20 is shifted, it is possible to accurately write information in the two-dimensional chart recording area 20.

Further, according to this embodiment, the sensor pen 48 is held by the pen gripping device 38 at the same position as the writing pens 50 to 54 and scanned over the anesthesia recording paper 18, so that the anesthesia recording paper 18 and the sensor pen 48 are Since the distance is the same as the distance between the writing pens 50 to 54 and the anesthesia recording paper 18, the two-dimensional diagram recording area 2
There is an advantage that there is no need for means for taking into account positional deviation and correcting it when detecting the position and size of zero.

Furthermore, according to this embodiment, writing pens 50 to 54 filled with a plurality of types (three types in this embodiment) of different inks can be selected in accordance with the type of symbol representing biological information, etc. There is an advantage that symbols representing biological information can be displayed in a variety of colors in a plurality of colors.

Next, other aspects of this embodiment will be described in detail based on the drawings. Note that in this embodiment, parts common to those in the above-mentioned embodiments are given the same reference numerals, and explanations thereof will be omitted.

In the above embodiment, the sensor pen 48 and the writing pens 50 to 54 were selectively taken out by the carriage 34, but in short, one end of the optical fiber must be fixed in the carriage so as to receive the reflected light from the recording paper. However, both the writing instrument and the optical fiber may be provided at fixed carriage positions.

That is, in the carriage 116 shown in FIGS. 12 and 13, a writing pen 118 is attached to the pin 12.
It is attached by a support bar 121 so as to be rotatable about 0 as the rotation center. The carriage 116 is slidably mounted on a rail 124 having a groove 122 formed in the center thereof, and along the groove 122 of the rail 124, a flexible piece with one end fixed on the upper surface of the carriage 116 is provided. flat cable 12
6 is accommodated. This flat cable 12
Optical fiber 12 for light reception fixed to one end of 6
8 is connected to the light receiving element 78 (not shown) at one end, separated from the flat cable 126 on the upper surface of the carriage 116, and passed through the carriage 116 at the other end.
It is made to protrude toward the anesthesia recording paper 18 from the lower surface of the . Further, a light emitting element 130 is fixed to the lower surface of the carriage 116, and a part of the light emitting element 130 is connected to an optical fiber 130.
It protrudes near the other end of 28, and the carriage 11
6 houses a vertical solenoid 132 that controls the vertical movement of the pen 118. In this embodiment, the light emitting element 130 and the optical fiber 128 emit light from the carriage 116 toward the anesthesia recording paper 18, and the anesthesia recording paper 18
The carriage 116 corresponds to a light detection means for receiving the reflected light from the carriage 116.

When the carriage 116 configured as described above is scanned, the anesthesia recording paper 18 reflects the light emitted from the light emitting element 130 fixed to the lower surface of the carriage 116, and this reflected light is transferred to the optical fiber 12.
The light receiving element 78 receives the light through the light receiving element 8, and detects and stores the position and dimensions of the two-dimensional chart recording area 20 based on the amount of reflected light. Therefore,
By using such a carriage 116,
The same effects as the above-mentioned embodiment can be obtained, and
There is an advantage that the guide member 74 is not required and does not get in the way of the operator. However, in this case, the writing position and the detection position on the anesthesia recording paper 18 are different between the writing pen 118 and the light receiving optical fiber 128, so a process for correcting the distance difference between them is required. It is necessary to provide Further, the fiber cable 68 of the above-described embodiment may be attached to the carriage 116 in the same manner as the optical fiber 128 of this embodiment. In this case, the tip of the fiber cable 68 is biased by a spring so that it comes into light contact with the anesthesia recording paper 18.

Further, in the above-mentioned embodiment, the number of light-receiving fibers 70 and light-emitting fibers 72 in the fiber cable 68 is one and six, respectively, and the grid lines of the two-dimensional diagram recording area 20 drawn in a single color are detected. For example, the 14th
As shown in the figure, three wires are connected to a red light sensitive element that is exclusively sensitive to red light, a yellow light sensitive element that is sensitive only to yellow light, and a blue light sensitive element that is sensitive only to blue light. The fiber cable 138 may be composed of light receiving fibers 134R, 134Y, 134B (indicated by diagonal lines in the figure) and nine light emitting fibers 136.

The sensor pen 48 equipped with such a fiber cable 138 is scanned within the two-dimensional chart recording area 20 of the anesthesia recording paper 18 drawn by three types of lines of red, yellow, and blue in the same manner as in the previous embodiment. As a result, the light emitted from the nine light-emitting fibers 136 is reflected from the anesthesia recording paper 18, and the red light, yellow light, and blue light of the reflected light are transmitted to the light-receiving fibers 134R, 134Y, and They are exposed to light by photosensitive elements connected to each other through 134B.

Here, when the sensor pen 48 passes over, for example, a red line in the two-dimensional chart recording area 20, the blue reflected light (red The red line is detected because a certain amount of red light (remaining color) is absorbed by the red line and the red light is reduced to about 70% or less of the red reflected light from the blank area of the anesthesia recording paper 18 stored in advance. This operation is performed similarly for the yellow and blue lines.

Therefore, according to this embodiment, when passing over any one of the three types of lines, red, yellow, and blue, the three light-receiving fibers 134R, 134Y correspond to the color of the line. , 134B, the amount of light received by at least one of the photosensitive elements connected to the blank area is reduced to about 70% or less compared to the amount of light received in the blank area, so two-dimensional chart recording is possible regardless of the color of the drawn line. The position and dimensions of region 20 are detected.

Even if the grid in the two-dimensional chart recording area 20 is drawn in a neutral color consisting of any combination of the three colors red, yellow, and blue, the position and dimensions of the two-dimensional chart recording area 20 can be determined in the same way as above. Needless to say, is detected.

In addition, in the above-mentioned embodiment, the two-dimensional diagram recording area 2
When detecting the position and size of 0, the sensor pen 48 is scanned once in the X direction and in the Y direction so as to intersect the center of the two-dimensional chart recording area 20, but when the sensor pen 48 is scanned in the Y direction The sensor pen 48 is scanned twice in the X direction so as to intersect with the two-dimensional chart recording area 20 at a position separated by a certain distance, and the sensor pen 48 is scanned twice in the Y direction so as to intersect with the two-dimensional chart recording area 20 at a position separated by a certain distance in the X direction. direction 2
It may be made to scan twice. This has the advantage that the inclination and distortion of the two-dimensional chart recording area 20 are also detected, and symbols can be written more accurately.

In addition, in the above-mentioned embodiment, the two-dimensional chart recording area 2
Although the position and size of 0 are directly detected by the sensor pen 48, a two-dimensional diagram recording area 20 of a certain size is recorded on the anesthesia recording paper 1.
8, the two-dimensional diagram recording area 20 is detected by detecting the edge of the anesthesia recording paper 18 with the sensor pen 48.
There is no problem even if it is detected indirectly.

In addition, although the automatic blood pressure monitor 10 that can measure blood pressure, pulse rate, respiration rate, etc. was used in the above-mentioned embodiment, instead of or in addition to that, biological information such as body temperature required for biological monitoring is used. A measuring device may also be provided.

Furthermore, although the X-Y plotter 22 was used in the above embodiment, it may be a dot printer, an inkjet printer, or an X-Y recorder that can record figures serially or in parallel using a large number of dots.

Furthermore, although the X-Y plotter 22 of the above-mentioned embodiment was provided with the control circuit shown in FIG. 7, the control device 16 directly controls the You can also do as you like.

Further, although the control device 16 of the above-described embodiment is provided with a clock circuit 104, it can be removed if a symbol representing the measurement time is supplied from the automatic blood pressure monitor 10.

The above-mentioned embodiment is merely an embodiment of the present invention, and various changes may be made to the present invention without departing from the spirit thereof.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing the system configuration of an automatic anesthesia record sheet filling device to which an X-Y plotter, which is an embodiment of the present invention, is applied. Figure 2 is X-Y in Figure 1
FIG. 2 is a diagram showing a two-dimensional chart recording area provided at a predetermined location on an anesthesia recording paper used in a plotter. FIG. 3 is a plan view showing the configuration of the X-Y plotter of FIG. 1. FIG. 4 is a diagram showing the configuration of a sensor pen used in the X-Y plotter of FIG. 3. Fifth
Figures a and b are a front view and a plan view, respectively, showing the tip of the sensor pen in Figure 4. FIG. 6 is a diagram showing the state when the sensor pen of FIG. 4 is scanned over an anesthesia recording paper. Figure 7 shows the X-
FIG. 3 is a control circuit diagram of the Y plotter. FIG. 8 is a block diagram showing the configuration of the control device shown in FIG. 1. FIGS. 9, 10, and 11 are flowcharts illustrating the operation of the control device shown in FIG. 8, respectively. FIGS. 12 and 13 are a perspective view and a partial cross-sectional view, respectively, showing the vicinity of a carriage according to another embodiment of the present invention. FIG. 14 is a diagram corresponding to FIG. 5b showing a fiber cable according to another embodiment of the present invention. 16...control device (control means), 18...anesthesia recording paper (recording paper), 21...vertical axis, 23...horizontal axis,
25, 27... line (reference line), 22... X-Y plotter (X-Y recording device), 24... mounting table, 3
4,116...Carriage, 50,52,54,1
18... Writing pen (writing instrument), {48... Sensor pen, 68... Fiber cable, 78... Light receiving element, 80... Light emitting element} (light detection means), 128
. . . Optical fiber, 130 . . . Light emitting element (light detection means), register X, register Y . . . Carriage position detection means.

Claims (1)

[Claims for Utility Model Registration] A mounting table on which a cut sheet of recording paper is placed, and a carriage that is moved in the X direction and the Y direction with respect to the recording paper, and a writing instrument installed on the carriage is provided. In an X-Y recording device of the type that writes in a recording area defined in advance by printing on the recording paper, in order to detect reference lines perpendicular to each other printed at a fixed relative position to the recording area on the recording paper. , a light detection means for irradiating light toward the recording paper from the carriage and receiving reflected light from the recording paper at the carriage; a carriage position detection means for detecting the position of the carriage; and a light detection means for detecting the position of the carriage; By driving the carriage prior to writing, the position of the reference line is determined based on the position of the carriage detected by the carriage position detection means when the reference line is detected by the light detection means. An X-Y recording device comprising: a control means for causing the writing instrument to write in the writing area based on the position of the reference line.