JP3415971B2 - Measuring device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a measuring device for displaying a temporal change in a measurement result such as atmospheric pressure, temperature, or pulse rate. More specifically, the present invention relates to a measuring device that appropriately displays a temporal change in a measurement result according to the length of the measurement time.

[0002]

2. Description of the Related Art In a measuring device for measuring atmospheric pressure, water pressure, temperature, humidity, pitch during running, or pulse rate,
It is desired to display not only the measurement result at that time but also its temporal change. For example, in a portable pulse wave measuring device that measures the pulse rate, etc., by further incorporating a timing function, it is possible to display both the pulse rate and the lap time during the marathon, so that the temporal change of the pulse rate during the marathon It is desired to display. Here, if the pulse rate during a marathon is to be measured, the measurement usually takes more than two hours, so conventionally, after setting the time axis with a sufficient margin for the estimated measurement time, , The measurement results are displayed in time series. In addition, it is general that the maximum memory capacity is secured so that the memory capacity does not run short during measurement.

[0003]

[Problems to be Solved by the Invention] Runners are concerned about their physical condition right after the start of the marathon, so if possible, I would like to see in detail the temporal changes in the pulse rate during the first or second minutes immediately after the start. Due to the size limitation of the display device, in the conventional pulse wave measuring device, if the measurement results are displayed in detail immediately after the start, the overall change in pulse rate from the start to the end of the marathon cannot be displayed. There is a problem.

In view of the above problems, the object of the present invention is to
It is an object of the present invention to provide a measuring device capable of properly displaying the time course of a measurement result regardless of the length of the measuring time without increasing the size of the display device.

[0005]

In order to solve such a problem, in a measuring device according to the present invention, a sensor means for measuring atmospheric pressure, temperature, pulse rate or the like, and a temporal change of a measurement result of the sensor means. A display device for displaying, a plurality of data compression means capable of compressing the measurement results output from the sensor means at regular time intervals at a compression rate of two or more ranks, and the data compression means. A plurality of compressed data storage means for storing the compressed data obtained by the data compression means, and a setting in which the number of data stored in these compressed data storage means is set by the compression rank. When the value is reached, the compressed data stored in the compressed data storage means is recompressed into data whose compression rate is further increased by one rank, and the compressed data is also compressed. The data storage means stores the data compression control means for controlling the data compression means so as to store the data as compressed data compressed by the compression rate increased by one rank thereafter and the compressed data storage means. Display control means for displaying the temporal change of the measurement result on the display device based on the compressed data stored therein.

In the present invention, the data compression means is
For example, after the data is compressed at a compression rate of 1 with respect to the measurement result, each time the number of data stored in the corresponding compressed data storage means reaches a set value, the subsequent compression rate is doubled. After performing the data compression with the first data compression means and the compression ratio of 3 times the measurement result, each time the number of data stored in the corresponding compressed data storage means reaches the set value, the subsequent compression is performed. Second to double the rate
Data compression means.

In the present invention, the display control means is based on the compressed data stored in the compressed data storage means having the largest number of stored data among the compressed data storage means after the measurement is completed. The display device may be configured to display a temporal change in the measurement result.

Further, the display control means, assuming that the number of data stored in the compressed data storage means reaches a set value, compresses the compressed data stored up to that time into data having a further higher compression rate by one rank. When it is redone, it is judged which compressed data storage means has the largest number of compressed data stored at this time, and the display of the temporal change of the measurement result on the display device is performed with the largest number of data. It is also possible to switch to display based on compressed data stored in a large amount of compressed data storage means.

In the present invention, it is preferable that the display device is provided with a dot display area for graphically displaying a time course of the measurement result.

In the present invention, further, after the measurement is completed, the compressed data stored in the compressed data storage means having the largest number of stored data among the compressed data storage means is stored based on an external operation. Predetermined data storage means is preferably provided.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described with reference to the drawings.

(Overall Structure) FIG. 1 is an explanatory view showing the overall structure of an arm-mounted pulse wave measuring apparatus of this example.

In FIG. 1, a wrist-worn pulse wave measuring device 1 (portable electronic device) of this example is a device body 10 having a wristwatch structure, and a cable 20 connected to the device body 10.
And a sensor unit 30 (pulse wave signal detecting portion) provided on the distal end side of the cable 20. The device body 10 is provided with a wrist band 12 that is wound around an arm in the wristwatch from the 12 o'clock direction and fixed at the 6 o'clock direction. With the wrist band 12, the device body 10 can be attached to and detached from the wrist. Sensor unit 30
Is attached between the base of the index finger and the knuckle while being shielded from light by the sensor fixing band 40 (unit fixing means). As described above, when the sensor unit 30 is attached to the base of the finger, the cable 20 can be short, so that the cable 20 does not interfere with running.
Further, when the distribution of body temperature from the palm to the fingertip is measured, the temperature at the fingertip decreases significantly when it is cold, whereas the temperature at the base of the finger does not relatively decrease. Therefore, if the sensor unit 30 is attached to the base of the finger, the pulse rate and the like can be accurately measured even when running outdoors on a cold day.

(Structure of the apparatus main body) FIG. 2 is a plan view showing the apparatus main body of the arm-mounted pulse wave measuring apparatus of this embodiment with the wristband and cables removed, and FIG. It is the side view which looked at the wave measuring device from the direction at 3 o'clock.

In FIG. 2, the apparatus main body 10 is provided with a resin watch case 11 (main body case). On the front surface side of the watch case 11, in addition to the current time and date, the pulse rate and other pulses are displayed. A liquid crystal display device 13 (display device) that digitally displays wave information and the like is configured. In the liquid crystal display device 13, a first segment display area 131 located on the upper left side of the display surface, a second segment display area 132 located on the upper right side, and a third segment display area 133 located on the lower right side. , And the dot display area 1 located on the lower left side
34 is configured, and various information can be graphically displayed in the dot display area 134.

In the inside of the watch case 11, in order to display the change of the pulse rate on the liquid crystal display device 13 based on the detection result (pulse wave signal) by the sensor unit 30, the control for the display device and the detection signal are performed. A control unit 5 that performs signal processing and the like is configured. Since the control unit 5 is also configured with a timing circuit, normal time, lap time,
The split time and the like can also be displayed on the liquid crystal display device 13.

On the outer peripheral portion and the surface portion of the watch case 11,
Button switches 111 to 111 for performing time adjustment, mode switching, operation to start measuring lap time, and the like
117 is configured.

The power source of the wrist-worn pulse wave measuring device 1 is a button type battery 59 built in the watch case 11,
The cable 20 supplies electric power from the battery 59 to the sensor unit 30, and inputs the detection result of the sensor unit 30 to the control unit 5 of the watch case 11.

In the arm-worn pulse wave measuring apparatus 1, it is necessary to increase the size of the apparatus main body 10 as its function is increased. However, the apparatus main body 10 has a restriction that it is worn on the arm. The device body 10 is set to a wristwatch at 6 o'clock and 1
It cannot be expanded toward 2 o'clock. In view of this, in this example, the device body 10 uses the horizontally long watch case 11 whose length dimension in the directions of 3 o'clock and 9 o'clock is longer than the length dimension in the directions of 6 o'clock and 12 o'clock. However, since the wristband 12 is connected at a position biased toward the 3 o'clock side, the wristband 12 has a large overhanging portion 101 in the 9 o'clock direction when viewed from the wristband 12, but such a large overhang is present. The part is not at 3 o'clock. Therefore, even if the horizontally long watch case 11 is used, the wrist can be freely bent, and the back of the hand does not hit the watch case 11 even if it falls.

A battery 59 is provided inside the watch case 11.
On the other hand, in the direction of 9 o'clock, the flat piezoelectric element 5 for the buzzer
8 are arranged. Since the battery 59 is heavier than the piezoelectric element 58, the position of the center of gravity of the apparatus main body 10 is in a position deviated in the 3 o'clock direction. Since the wrist band 12 is connected to the side where the center of gravity is deviated, the device body 10 can be stably attached to the arm. In addition, the battery 59 and the piezoelectric element 5
8 and 8 are arranged in the plane direction, the apparatus main body 10 can be made thin, and the user can easily replace the battery 59 by providing the battery lid 118 on the back surface part 119 as shown in FIG. .

(Structure of Mounting Device Main Body on Arm) In FIG. 3, a connecting portion 105 for holding the stop shaft 121 attached to the end portion of the wristband 12 is provided in the 12 o'clock direction of the watch case 11. Has been formed. In the 6 o'clock direction of the watch case 11, the wristband 12 wound around the arm is folded back at an intermediate position in the length direction, and a receiving portion 106 to which a fastener 122 for holding this intermediate position is attached is formed. Has been done.

In the 6 o'clock direction of the device body 10, the portion from the back surface portion 119 to the receiving portion 106 is the watch case 1
It is molded integrally with 1 and is about 115 ° to the back surface 119.
The rotation stopping portion 108 forms an angle. That is, when the device body 10 is mounted by the wristband 12 so as to be positioned on the upper surface portion L1 (back of the hand) of the left wrist L (arm), the back surface portion 119 of the watch case 11 has the upper surface portion L1 of the wrist L. While the rotation stopper 108,
It abuts on the side face L2 having the radius R. In this state, the back surface portion 119 of the apparatus body 10 feels to straddle the radius R and the ulna U, while the bending portion 109 between the rotation stopping portion 108 and the back surface portion 119 and the rotation stopping portion 108 contact the radius R. It makes you feel like you're in touch. As described above, since the rotation stopping portion 108 and the back surface portion 119 form an anatomically ideal angle of about 115 °, the device body 10 is moved in the direction of arrow A and the device body 10 is moved in the arrow direction. Even if an attempt is made to turn it in the direction of B, the device body 10 will not unnecessarily shift further. Also,
Since the back surface part 119 and the rotation stopping part 108 only restrict the rotation of the apparatus main body 10 at two positions on one side around the arm, the back surface part 119 and the rotation stopping part 10 are prevented even if the arm is thin.
Since 8 firmly contacts the arm, the rotation stopping effect is surely obtained, while the arm is thick and does not feel cramped.

(Structure of Sensor Unit) FIG. 4 is a sectional view of the sensor unit of this example.

In FIG. 4, the sensor unit 30 has a component housing space 300 formed therein by covering a back side of a sensor frame 36 as a case body with a back cover 302. A circuit board 35 is arranged inside the component storage space 300. LED3 is provided on the circuit board 35.
1, the phototransistor 32, and other electronic components are mounted. The sensor unit 30 includes a bush 393.
The end of the cable 20 is fixed by the
Each of the wirings is soldered on the pattern of each circuit board 35. Here, the sensor unit 30 is attached to the finger so that the cable 20 is pulled out from the base side of the finger to the apparatus main body 10 side. Therefore, the LED 31 and the phototransistor 32 are arranged along the length direction of the finger, of which the LED 31 is located on the tip side of the finger and the phototransistor 32 is located on the base of the finger. Such an arrangement has an effect that external light does not easily reach the phototransistor 32.

In the sensor unit 30, a light-transmitting plate 34 made of a glass plate is formed on the upper surface of the sensor frame 36 (substantially pulse wave signal detecting portion) to form a light-transmitting window. LED 31 and phototransistor 32
Respectively direct the light emitting surface and the light receiving surface toward the transparent plate 34. Therefore, when the finger surface is brought into close contact with the outer surface 341 (contact surface with the finger surface / sensor surface) of the transparent plate 34, L
The ED31 emits light toward the finger surface side,
The phototransistor 32 can receive the light reflected from the finger side of the light emitted by the LED 31. Here, the outer surface 341 of the translucent plate 34 has a structure protruding from its peripheral portion 361 for the purpose of enhancing the adhesion between the outer surface 341 of the translucent plate 34 and the finger surface.

In this example, InGaN is used as the LED 31.
System (indium-gallium-nitrogen system) blue LED is used, and its emission spectrum has an emission peak at 450 nm, and its emission wavelength range is from 350 nm to 60 nm.
It is in the range up to 0 nm. LE having such emission characteristics
Corresponding to D31, in this example, the phototransistor 3
2, a GaAsP-based (gallium-arsenic-phosphorus-based) phototransistor is used, and the light receiving wavelength region of the device itself has a main sensitivity region of 300 nm to 600 nm.
Up to 300 nm and there is a sensitivity region below 300 nm.

The sensor unit 30 configured as described above
As shown in FIG. 5, the sensor fixing band 40 (see FIG.
The illustration is omitted. When the light is emitted from the LED 31 toward the finger in this state, part of the light is absorbed by hemoglobin in the blood and part of the light is reflected. Finger (blood vessel)
The light reflected from the phototransistor 32 is received by the phototransistor 32, and the change in the amount of received light is the change in blood volume (pulse wave of blood).
Corresponding to. That is, when the blood volume is large, the reflected light becomes weak, while when the blood volume is small, the reflected light becomes strong. Therefore, if the change in the reflected light intensity is detected, the pulse rate or the like can be measured.

In this example, an LED 31 having an emission wavelength range of 350 nm to 600 nm and a phototransistor 32 having a light reception wavelength range of 300 nm to 600 nm are used. The biological information is displayed based on the detection result in the wavelength region up to approximately 600 nm, that is, in the wavelength region of approximately 700 nm or less. Such a sensor unit 30
By using, even when the external light hits the exposed part of the finger, the light included in the external light and having a wavelength range of 700 nm or less does not reach the phototransistor 32 (light receiving portion) using the finger as a light guide. The reason is that light having a wavelength range of 700 nm or less included in external light tends not to easily pass through a finger. Therefore, even if external light is applied to a part of the finger not covered with the sensor fixing band 40, As shown by the dotted line X, it does not reach the phototransistor 32 through the finger. In contrast,
When an LED having an emission peak near 880 nm and a silicon-based phototransistor are used, the light receiving wavelength range thereof extends from 350 nm to 1200 nm. In this case, as shown by an arrow Y in FIG. 5, 1 μm that allows the finger to easily reach the light receiving portion as a light guide.
Since the pulse wave is detected based on the detection result of the light having the wavelength of m, erroneous detection due to the fluctuation of the external light is likely to occur.

Further, since the pulse wave information is obtained by using the light in the wavelength region of about 700 nm or less, the S / N ratio of the pulse wave signal based on the blood volume change is high. The reason for this is that hemoglobin in blood has an extinction coefficient for light with a wavelength of 300 nm to 700 nm at a wavelength of 8 which is conventional detection light.
Several times to about 100 times the absorption coefficient for 80 nm light
Because it is more than twice as large, it changes sensitively to blood volume changes,
It is considered that the detection rate (S / N ratio) of the pulse wave based on the blood volume change is high.

In FIG. 5, reference numeral 38 is a light transmitting plate 34.
It is a human body grounding terminal arranged around the.

(Connecting Structure of Device Body and Sensor Unit) As shown in FIGS. 1 and 3, in the 6 o'clock direction of the device body 10, on the surface side of the portion extended as the rotation stopping portion 108. The connector portion 70 is configured so that the connector piece 80 configured at the end portion of the cable 20 can be attached to and detached from the connector portion 70. Therefore, if the connector piece 80 is removed from the connector portion 70, the wrist-worn pulse wave measuring device 1 can be used as an ordinary wristwatch or stopwatch. However, when the cable 20 and the sensor unit 30 are used with the connector portion 70 of the apparatus main body 10 removed, in order to protect the connector portion 70,
Attach the specified connector cover. The connector cover having the same structure as the connector piece 80 can be used. However, the connector cover does not require an electrode part or the like. Connector part 70 and connector piece 80
The electrical connection at the connector portion constituted by and is as shown in FIG.

In FIG. 6, terminals 751 to 756 (first terminal group) are formed in the connector portion 70 formed on the apparatus main body 10 side, and these terminals 751 to 751 are formed.
Corresponding to 756, the connector piece 80 has an electrode portion 8
31 to 836 (second terminal group) are configured. Among them, the terminal 752 is connected to the LED 31 via the electrode portion 832.
A positive terminal for supplying the second drive voltage VDD to
The terminal 753 is a terminal to be a negative potential of the LED 31 via the electrode portion 833, and the terminal 754 is a terminal for supplying a constant voltage VREG for driving to the collector terminal of the phototransistor 32 via the electrode portion 834. 751
Is a terminal to which a signal from the emitter terminal of the phototransistor 32 is input via the electrode portion 831.

The terminal 755 is a terminal to which a signal for detecting whether or not the connector piece 80 is attached to the connector portion 70 is input via the electrode portion 835, and when the connector piece 80 is attached to the connector portion 70. A signal to that effect is input to the control unit 5 of the apparatus body 10 via the connector unit 70.

The electrode portion 836 is grounded to the human body through the human body grounding terminal 38 in the sensor unit 30. When the terminal 756 and the electrode portion 836 are electrically connected, VDD should be a ground line. Thus, the electrode portions 831 to 836 are shielded.

In the connector piece 80, the first capacitor C1 and the first switch SW1 are inserted between the terminals of the LED 31 (between the electrode portions 832 and 833). The switch SW1 is closed when the connector piece 80 is removed from the connector portion 70,
When the first capacitor C1 is connected in parallel to 31 and the connector piece 80 is attached to the connector portion 70, the first capacitor C1 is opened. Similarly, the second capacitor C2 and the second switch SW2 are inserted between the terminals of the phototransistor 32 (electrode portions 831 and 834).
This switch SW2 is also closed when the connector piece 80 is removed from the connector section 70, and the second capacitor C2 is connected in parallel to the phototransistor 32, and when the connector piece 80 is attached to the connector section 70. The open state. Therefore, when the connector piece 80 is detached from the connector portion 70, even if something having a high electric potential touches the electrode portions 831, 832, 833, 834 due to static electricity, the electric charge is not applied to the first and second capacitors C.
1 and C2, the LED 31 and the phototransistor 32 are not damaged. Also, the connector piece 8
When 0 is attached to the connector 70, the pulse wave signal can be automatically detected.

(Overall Structure of Control Unit) FIG. 7 is an explanatory view showing a part of the function of the control unit formed inside the main body of the wrist-worn pulse wave measuring apparatus of this example, and FIG. It is explanatory drawing which shows a part of function of the pulse wave data processing part comprised in the control part, the display data processing part, and the display control part. 7 and 8, the operation performed by the control unit, the pulse wave data processing unit, the display data processing unit, and the display control unit is the CPU.
Since it is done based on the program stored in
Its function is shown as a block diagram.

In FIG. 7, the control unit 5 has two ICs.
50 and 56 are provided. The IC 56 includes a clock section 561 that performs a clock operation based on a signal from an oscillation circuit including a crystal oscillator and a variable capacitor, the liquid crystal display device 13.
A liquid crystal display booster circuit 541 for obtaining a voltage for performing a predetermined display, a liquid crystal display drive circuit 562 for driving the liquid crystal display device 13, and the like are configured. Also, I
C56 includes a mode switching unit 564 that performs control for switching the wrist-worn pulse wave measuring device 1 to a clock mode, a normal stopwatch function, and a pulse meter mode that measures pulse wave information, and a mode at that time. A display control unit 53 that controls the display operation of the liquid crystal display device 13 and a display data processing unit 60 that processes the data for this display are configured accordingly.

In the control unit 5, the capacitance elements 528 and 558 are connected in parallel to the battery 59 by wiring, and the capacitance element 528 is a backup for the memory 563 and the like formed inside the IC 56. For capacitors. On the other hand, the capacitive element 558 is the IC5
It is a backup capacitor for the memory 501 and the like which is configured inside 0.

A voltage detector 543 for detecting the terminal voltage of the battery 59 and inputting the detection result to the IC 56 is formed inside the apparatus main body 10, and when the terminal voltage of the battery 59 decreases, The liquid crystal display device 13 is adapted to display that effect. In the inside of the apparatus main body 10, there is also configured a notification sound generation booster circuit 580 including a piezoelectric element 58 for generating a notification sound, and a coil for boosting the voltage output from the IC 56 and supplying the voltage to the piezoelectric element 58. Has been done.

(Pulse wave data processing unit) The IC 50 is provided with a pulse wave data processing unit 55 that obtains a pulse rate based on the input result from the sensor unit 30, and the pulse wave data processing unit 55 The pulse wave information such as the number
Such information can be displayed on the liquid crystal display device 13 by outputting it to the (display control unit 53).

That is, in FIG. 8, in the pulse wave data processing section 55, the signal inputted from the sensor unit 30 via the cable 20 is amplified by an amplifying section 550 made of an operational amplifier.
After being amplified by, the pulse wave signal converter 5 including an A / D converter
The signal 51 is converted into a digital signal and output to the pulse wave signal storage unit 552. The pulse wave signal storage unit 552
Stores the pulse wave data converted to digital signals R
AM. The pulse wave signal calculation unit 553 reads the signal stored in the pulse wave signal storage unit 552, performs frequency analysis on the signal, and inputs the result to the pulse wave component extraction unit 554. The pulse wave component extraction unit 554 extracts the pulse wave component from the input signal from the pulse wave signal calculation unit 553 and outputs it to the pulse rate calculation unit 555.
5 calculates the pulse rate from the frequency component of the input pulse wave, and outputs the result to the display control unit 53 via the display data processing unit 60. The clock signal for performing these operations is output from the IC 56. Since the pulse rate is obtained by such processing, in this example, it takes 4 seconds to obtain one piece of pulse rate data, and the pulse wave data processing unit 55 displays the measurement result of the pulse rate every 4 seconds as display data. Is output to the display data processing unit 60. Thus, in this example, the sensor unit 30 and the pulse wave data processing unit 55 constitute the sensor means.

(Structure of Display Data Processing Unit) On the IC 56 side, a display data processing unit 60 for processing the pulse rate data output from the pulse wave data processing unit 55 as display data is formed. The display data processing unit 60 has a working memory 61 for storing pulse rate data output from the pulse wave data processing unit 55, compressed data obtained by performing compression processing on the data, and the like. A data compression unit 65 that performs a compression calculation process on the pulse rate data stored in the working memory 61 and a data compression control unit 63 that controls the operation performed by the data compression unit 65 are configured.

Since the display data processing unit 60 carries out two series of compression processing, the working memory 61 includes the first data memory 611 (compressed data storage means) and the second data memory 611.
Data memory 612 (compressed data storage means) is configured, and each of the first and second data memories 611 and 612 can store 30 pieces of display data.
Further, the data compression unit 65 is configured with a first data compression unit 66 and a second data compression unit 67 for performing two series of compression processing.

Among them, the first data compressing section 66 converts the data stored in the first data memory 611 into
After the processing with the compression ratio of 1 time is performed, data is stored based on a command from the data compression control unit 63 every time the number of data stored in the first data memory 611 reaches 30. This is for performing a process of increasing the compression rate of 2 by 2. On the other hand, the second data compression unit 67
The data stored in the second data memory 612 is first subjected to a compression process with a compression ratio of 3 times with respect to time.
Whenever the number of data stored in the second data memory 612 reaches 30, a process for increasing the data compression rate by 2 times based on a command from the data compression control unit 63 is performed. It is a thing.

The configurations of the first data compression unit 66, the second data compression unit 67, and the data compression control unit 63 for performing such processing will be described with reference to FIG. FIG. 9 is a block diagram showing a part of the functions of the first data compression unit, the second data compression unit, and the data compression control unit.

As shown in FIG. 9, the first data compression section 6
Reference numeral 6 denotes a first 4-second data accumulation processing unit 661 that accumulates pulse rate data input every 4 seconds, and a first 4-second data counter that counts the number of data accumulated therein. 662, and when the count number of the first 4-second data counter 662 reaches a predetermined value, the first count value is reached by that time.
And a first calculation unit 663 for dividing the value accumulated by the 4-second data accumulation processing unit 661 by the number of the first 4-second data counter 662 and obtaining an average value in the meantime. The average value obtained by the first calculation unit 663 is sequentially stored in the first data memory 611. The number of data stored in the first data memory 611 is counted by the first compressed data counter 664. During this period, the first compression scale counter 665 counts the value of the compression rate of the process currently being performed as "scale 1", that is, the compression rate is 1. First 4-second data counter 662, first compressed data counter 66
The fourth and first compression scale counters 665 are monitored by the data compression controller 63. When the count value of the first compression scale counter 665 is “scale 1”, the data compression control unit 63 determines that the compression rate is 1 time and the first 4-second data counter 662 increments by “1”. Then, the first arithmetic unit 663 is caused to perform processing. Therefore, at this time, the 4-second data is stored in the first data memory 611 as it is.

In the meantime, the first compressed data counter 6
When 64 becomes "30", the first compression scale counter 665 becomes "scale 2". That is, the compression rate is 2
Doubled. Here, the first data compression unit 66
Averaging processing unit 666 of the first averaging processing unit 666 is stored in the first data memory 611 based on a command from the data compression control unit 63.
Of the 0 data, 15 averages of the data on both sides are obtained, and the 15 averages are replaced with the 30 data stored so far, and the first data memory 61
Store in 1. In other words, for the 30 pieces of data stored in the first data memory 611 until then, 2
Double the data compression. When such processing is performed, the first
The compressed data counter 664 of is reset to “15”. After that, the data compression control unit 63 causes the first arithmetic unit 663 to perform processing when the first 4-second data counter 662 becomes “2”, so that the average value of the two 4-second data is the first value. 1 is stored in the data memory 611.

When the first compressed data counter 664 becomes "30" again in the meantime, the first compressed scale counter 665 becomes "scale 3". That is, the compression rate becomes four times. Also at this time, the first averaging processing unit 66
Based on a command from the data compression control unit 63, 6 obtains an average of 15 pieces of data on both sides of the 30 pieces of data stored in the first data memory 611, and calculates the average of these 15 pieces. Average, 30 remembered so far
The data is stored in the first data memory 611 instead of the individual data. That is, until then, the first data memory 611
Double compression is performed again on the 30 data stored in. When this processing is performed, the first compressed data counter 664 is reset to "15". Thereafter, the data compression control unit 63, when the first 4-second data counter 662 reaches “4”, the first arithmetic unit 6
Since the process is performed at 63, the average value of the four 4-second data is stored in the first data memory 611.

Thereafter, the data compression control unit 63 causes the first 4-second data counter 662 to multiply the set value up to that time by twice each time the first compressed data counter 664 reaches "30". For the first time, the processing is performed by the first arithmetic unit 663, so that the data stored in the first data memory 611 has a compression rate twice as high as the previous compression rate. Will be remembered. In addition, the 30 pieces of data that have been stored in the first data memory 611 are 15 pieces of data that are twice as compressed as before.

As can be seen from FIG. 9, the second data compression section 67 also has a second 4-second data accumulation processing section 671 for accumulating pulse rate data input every 4 seconds.
A second 4-second data counter 672 that counts the number of data accumulated therein, and a second 4-second data counter 6
When the count number at 72 reaches a predetermined value, the value accumulated by the second 4-second data accumulation processing unit 671 up to that point is divided by the number of the second 4-second data counter 672, and the average during that period is calculated. A second calculation unit 673 for calculating the value is configured, and the average value calculated by the second calculation unit 673 is sequentially stored in the second data memory 612. Also in this case, the number of data stored in the second data memory 612 is counted by the second compressed data counter 674. In addition, which compression rate of the processing currently being performed is
The second compression scale counter 675 counts, and the second 4-second data counter 67
The second, second compressed data counter 674, and the second compressed scale counter 675 are monitored by the data compression controller 63. Here, the data compression controller 63
From the beginning, the second 4-second data counter 672 starts processing in the second operation unit 673 only after the second 4-second data counter 672 reaches “3”, so that the average value of the three 4-second data is the second data memory 612. Will be stored in. That is, the second
The data compression unit 67 of No. 2 starts from a compression rate of 3 times. After that, the second data compression unit 67
Since the same operation as that of the data compression unit 66 is performed, detailed description thereof is omitted.

The first data compression section 6 configured as described above
6, second data compression section 67, and data compression control section 6
The operation of No. 3 will be briefly described with reference to FIG. Figure 10
3 is a flowchart showing an operation performed every time pulse rate data is input at 4-second intervals.

In step ST101, when pulse rate data is input every 4 seconds, step ST102
Then, the first 4-second data accumulation processing unit 661 accumulates data, and in step ST103, the count number of the first 4-second data counter 662 is incremented by "1".

In step ST104, immediately after the measurement is started, the data compression rate in the first data compression section 66 is 1
Since it is double, assuming that the count number of the first 4-second data counter 662 is “1”, the step ST is directly executed.
At 105, an average value is calculated. In step ST106, the first compressed data counter 664 is incremented by "1", and thereafter, in step ST107, the obtained average value is stored in the first data memory 611.

In step ST108, it is judged from the count value of the first compressed data counter 664 whether 30 pieces of data are stored in the first data memory 611, and if 30 pieces of data are not stored. Then, the process proceeds to step ST109.

At step ST109, the second 4-second data accumulation processing section 671 accumulates data,
In step ST110, the second 4-second data counter 6
The count at 72 is incremented by "1".

Immediately after the start of measurement in step ST111, the data compression rate in the second data compression section 67 is
Since it is three times, if the count number in the second 4-second data counter 672 is not "3", the process is terminated as it is. On the other hand, if the count number in the second 4-second data counter 672 is "3", after the average value is obtained in step ST112, the second compressed data counter 674 is set to "1" in step ST113. Only forward,
Then, in step ST114, the obtained average value is stored in the second data memory 612.

At step ST115, it is judged from the count value of the second compressed data counter 674 whether 30 pieces of data are stored in the second data memory 612, and if 30 pieces of data are not stored. In step ST116, the process ends.

When such processing is repeated 30 cycles, in step ST108, the count value of the first compressed data counter 664 is used to determine the first data memory 61.
In step ST117, it is assumed that 30 pieces of data have been stored in the first compressed data counter 664.
Is reset to "15". In addition, step ST118
In 1 above, after the counter number of the first compression scale counter 665 is incremented by 1 to “scale 2”, the first averaging processing unit 666 extracts the 30 pieces of data stored in the first data memory 611. Fifteen averages are calculated, and the fifteen averages are stored in the first data memory 611 in place of the thirty pieces of data stored so far (step ST119).

If 30 pieces of data are stored in the second data memory 612 from the count value of the second compressed data counter 674 in step ST115, the second compressed data counter 674 is set in step ST120. Reset to "15". In step ST121, the second compression scale counter 6
After incrementing the counter number of 75 by 1 to “scale 2”, the second averaging processing unit 676 obtains the average of 15 from 30 stored in the second data memory 612, The data of 3 is stored so far
Instead of 0 data, it is stored in the second data memory 612 (step ST122).

When the above operation is repeated, Table 1
As shown in, the counter numbers of the first and second compression scale counters 665 and 675 increase to “scale 1”, “scale 2”, ... As time passes. Each time, the number of data items averaged by the first calculation unit 663 is “1” “2” “4” “8” “16” “32”.
The number of data to be averaged by the second calculation unit 673 is “3” “6” “12” “24” ...
・ And doubles.

[0061]

[Table 1]

As a result, the compression rate in the first data compression section 66 is "1 time", "2 times", "4 times", "8 times", "16 times".
"32 times" ... doubles. On the other hand, the compression rates in the second data compression section 67 are also “3 times”, “6 times”, “12 times”.
Double, "24 times," and so on. Therefore, the time represented by the 30 pieces of data stored in the first data memory 611 is “2 minutes”, “4 minutes”, “8 minutes”.
"16 minutes", "32 minutes", "64 minutes" ... will be extended. On the other hand, 3 stored in the second data memory 612
The time represented by 0 data is “6 minutes” “12
Minutes "" 24 minutes "" 48 minutes "" 96 minutes "...

(Structure of Display Control Section) Referring again to FIG. 8, the display control section 53 is provided with a display mode switching section 536. The display mode switching section 536 includes the first and second data memories. Based on the compressed data stored in the data memory having the largest number of data stored in 611 and 612, the temporal change of the pulse rate is graphically displayed in the dot display area 134 of the liquid crystal display device 13. It is possible. Further, the display mode switching unit 536 controls the content of the pulse rate data and the button switch 11
It also has a function of automatically switching the display form on the liquid crystal display device 13 on the basis of an instruction or the like input via the 1 to 117.

Further, the display control unit 53 stores a designated range of the pulse rate preset by an external input as a pulse rate range, and stores a period corresponding to a substantially central value thereof as a reference pulse rate. A pulse rate range storage unit 534 to be set is configured. The pulse rate range and reference pulse rate are
This is the data that the user has input based on the results of training that has been performed so far.

The display on the liquid crystal display device 13 which is switched by the display control section 53 thus constructed will be described in detail later, but is generally as follows.

First, after starting the time measurement based on an external operation, the pulse rate data output from the pulse wave data processing unit 55 with the passage of time is stored in the working memory 61 while undergoing the above-mentioned processing. It will be remembered. After that, in the dot display area 134 of the liquid crystal display device 13, as shown in FIG. 11A, the absolute value of the pulse rate is displayed. Here, the display mode switching unit 536 compares the pulse rate measured this time with the pulse rate range stored in the pulse rate range storage unit 534, and the measured pulse rate has not reached within the pulse rate range. If it is determined (first measurement period), the center value is set so that the latest pulse data can be expressed in the dot display area 134, and a bar graph extending every hour corresponding to the absolute value of the measured pulse rate is displayed. Display is performed in the dot display area 134 of the liquid crystal display device 13.

On the other hand, the display mode switching unit 536 is
The pulse rate measured this time is within the pulse rate range stored in the pulse rate range storage unit 534 (the pulse rate is 120 to 168).
When it is determined that the pulse rate is within the range (2), the measured pulse rate and the pulse rate range storage unit 534 are stored thereafter (second measurement period), as shown in FIG. 11B. The dot display area 134 of the liquid crystal display device 13 is caused to display a bar graph extending in the positive direction or the negative direction at each time corresponding to the difference with the reference pulse rate (pulse rate 150).
In this way, the display mode switching unit 536 automatically switches the form of graphic display performed in the dot display area 134 between the first measurement period and the second measurement period, and thus, for example, the pulse rate during a marathon. When used for monitoring, even if the dot display area 134 is small,
By occasionally looking into the dot display area 134, it is possible to easily grasp the level of the pulse rate depending on the form of the display. Immediately after the start of the marathon, the pulse rate changes abruptly, but the display form may differ between when the measured pulse rate is within the range and when the measured pulse rate is outside the range. Therefore, in the dot display area 134 having a limited area, it is possible to perform easy-to-see display according to the pulse rate level.

When the pulse rate is displayed in this way,
Since only 30 pieces of data can be displayed in the dot display area 134 in the time axis direction, the pulse rate corresponding to 2 minutes in total is always displayed.

However, since only 30 pieces of data can be displayed in the dot display area 134 in the time axis direction, even if an attempt is made to display the measurement result of the current pulse rate after the end of measurement, a total of 2 minutes will be displayed. It can only display the pulse rate corresponding to.

Therefore, in this example, the measurement data is stored as compressed data. Here, if the data is simply compressed at a constant compression rate, for example, twice the compression rate,
From the state in which 30 pieces of data are displayed to the state in which only 15 pieces of data are displayed, the amount of information that can be displayed decreases. In order to eliminate such inconvenience, in this example, as described with reference to FIGS. 8 to 10 and Table 1, the data compressed at different compression rates is used as the compressed data. And the second data memory 6
11 and 612, and when there is an instruction to display the measurement result of the pulse rate after the measurement is completed, the display mode switching unit 536 causes the first and second data memories 6 and 6 to operate.
Based on the compressed data stored in the data memory having the largest number of data stored therein out of 11, 612, the temporal change of the pulse rate is graphically displayed in the dot display area 134 of the liquid crystal display device 13. That is, in Table 1, when 4 minutes have elapsed from the start of measurement,
Since the data memory 611 of the first data memory 611 is compressed, the number of data stored in the first data memory 611 is 15, but the second data memory 612 is 6
Since the data is not compressed until the minutes have elapsed, 20 data are stored when the four minutes have elapsed. Therefore, the display mode switching unit 536 is stored in the second data memory 612 as shown in FIG.
Based on the individual data, the dot display area 134 graphically displays the temporal change of the pulse rate. Even after that, it is assumed that the number of data stored in the first or second data memory 611, 612 reaches 30 and the compressed data stored up to that point is compressed to the data whose rank is further increased by one rank. Since it has been corrected, it is determined which data memory has the largest number of compressed data, and display is performed based on the compressed data stored in the data memory having a large number of data.

(Another Display Method of Pulse Rate) In this example, when the pulse rate measured this time is displayed again after the measurement is completed, the compressed data is used to display as much information as possible. However, instead of this, as to the display during the time measurement, the compressed data may be used to display as many temporal changes as possible of the pulse rate from the start of the time measurement to the present time.

That is, as described with reference to FIGS. 8 to 10 and Table 1, the first and second data memories 611 and 612 use the data compressed at different compression rates as the display data. The display mode switching unit 536 stores the first and second data memories 611 and 6 in the memory.
Based on the compressed data stored in the data memory having the largest number of data stored therein out of 12, the temporal change of the pulse rate is graphically displayed in the dot display area 134 of the liquid crystal display device 13. That is, in Table 1, the pulse rate (difference between the pulse rate and the reference pulse rate) is displayed based on the data stored in the first data memory 611 until 2 minutes have elapsed from the start of measurement. And 4
When the compression processing is performed on the first data memory 611 after the lapse of minutes, the number of data stored in the first data memory 611 becomes 15, but the second data memory 612 becomes , The data is not compressed until 6 minutes have passed, so that when 4 minutes have passed, 20 pieces of data are stored. Therefore, as shown in FIG. 11C, the display mode switching unit 536 changes the pulse rate in the dot display area 134 with time based on the 20 pieces of data stored in the second data memory 612. Display graphic.

Thereafter, the first or second data memory 61
When the number of data stored in Nos. 1 and 612 reaches 30 and the compressed data stored up to that time is recompressed into data with a further higher compression ratio, which data memory It is determined whether or not the number of compressed data stored in is large, and display is performed based on the compressed data stored in the data memory having a large number of data.

(Pitch Display Function) Further, in the wrist-worn pulse wave measuring apparatus 1 of this example, as shown in FIG. 8, the acceleration sensor 91 and the pitch during running are determined based on the detection result of this sensor. The desired pitch data processing unit 92 and the pitch data processing unit 92 are configured.
The data obtained by is also stored in the working memory 61. Therefore, when there is an external operation to display the pitch instead of the display of the pulse rate,
As shown in FIG. 12A, the display mode switching unit 536 displays the temporal change of the pitch on the dot display area 134 of the liquid crystal display device 13 by a line graph for each time corresponding to the absolute value of the pitch. Let That is, since the display form of the temporal change in pitch in the dot display region 134 is different from the display form in the dot display region 134 of the temporal change in pulse rate in any of the first and second measurement periods, The runner can easily determine which information the current display is displaying by simply looking at the display form, and can also easily and physically grasp the physical condition from the temporal change of the pitch.

While performing such measurement, when entering the goal of the marathon, the button switches 111 to 117
Even after the external operation for stopping the time measurement is performed via the, the mode switching unit 564 is
The display control unit 53 also graphically displays the temporal change in the pulse rate measured during this period as the pulse rate recovery characteristic in the dot display area 134 while keeping the mode of continuing the pulse rate measurement.

The display form at this time is different from the display form in the dot display area 134 of the temporal change of the pulse rate in any of the first and second measurement periods, as shown in FIG. 12B. , The pulse rate is displayed as a bar graph extending with time corresponding to its absolute value.

After the elapse of a predetermined time, FIG.
As shown in 2 (c), as in the first measurement period, the dot display area 134 of the liquid crystal display device 13 is caused to display a bar graph extending every time corresponding to the absolute value of the measured pulse rate. In this way, even after the external operation to stop measuring the pulse rate is performed, the pulse rate measurement is continued for a predetermined period, and the temporal change of the pulse rate measured during this period is also displayed graphically. Since it is displayed, it is possible to grasp the recovery characteristics of pulse rate when training for marathons.

In FIG. 8, the display controller 53 graphically displays the original waveform of the pulse wave signal on the liquid crystal display device 13 based on the pulse wave signal digitalized by the pulse wave signal converter 551 ( A waveform data conversion unit 531 and a sweep display processing unit 532 for sweep display) are also configured. Electric power is not supplied to the pulse wave data processing unit 55 and the sensor unit 30 when the arm-mounted pulse wave measuring device 1 is used as a normal wristwatch, and the arm-mounted pulse wave measuring device 1 is used by the pulse meter. The power supply is started when the measurement mode of the pulse wave information that functions as the pulse wave information processing unit 55 is started, and the pulse wave data processing unit 55 sets the operation cycle for the A / D converter included in the pulse wave signal conversion unit 551. Initialization processing such as is performed. Therefore, after the external operation to start measuring the pulse wave information,
When initialization is completed, until measurement is started,
The original waveform of the pulse wave signal is graphically displayed on the liquid crystal display device 13.

(Main operation of mode switching unit) Referring again to FIG.
In the above, the mode switching unit 564 measures the pulse wave information together with the timepiece mode, the stopwatch mode, and the timekeeping of the arm-mounted pulse wave measuring device 1 based on an external operation (operation of the button switches 111 to 117). It has a function to switch to the pulse rate mode. Therefore, the function of the mode switching unit 564 will be described while explaining the operation of the wrist-worn pulse wave measuring apparatus 1.

FIG. 13 schematically shows each mode performed by the wrist-worn pulse wave measuring device 1 and the display contents on the liquid crystal display device 13 at that time.

In FIG. 13, step ST11 is the timepiece mode, in which the first segment display area 131 is set to 1
December 6th, 994, the message that it is Monday is displayed, and the second
In the segment display area 132 of, the current time is 10 pm
It is displayed that the time is 08:59. In the dot display area 134, "TIME" is displayed as the current mode is the clock mode. However, as will be described later, “TIME” is displayed in the dot display area 134 only for a few seconds immediately after the timepiece mode is selected. The third segment display area 13
Nothing is displayed in 3.

In the wrist-worn pulse wave measuring apparatus 1 of this example, when the button switch 111 located in the 2 o'clock direction is pressed in the timepiece mode, an alarm sound can be generated one hour after that, and an alarm sound can be generated. The time at which is generated can be set arbitrarily. Further, when the button switch 113 at 11 o'clock is pressed, the EL backlight of the liquid crystal display device 13 is turned on for 3 seconds, and then automatically turned off.

When the button switch 112 located in the 4 o'clock direction from this mode is pressed, the running mode (step S
T12). This mode is a mode when the wrist-worn pulse wave measuring device 1 is used as a stopwatch. In the running mode, before the measurement is started (standby state), the first segment display area 13
The current time is displayed in 1 and the second segment display area 1
In 32, "0: 00'00" 00 "is displayed. Further, in the dot display area 134, after displaying “RUN” for 2 seconds as a guide indicating that the running mode is set,
The graphic display switches.

When the button switch 112 in the 4 o'clock direction is pressed from this mode, the mode is switched to the lap time recall mode (step ST13). This mode is a mode in which the lap time and the split time measured in the past using the wrist-worn pulse wave measuring device 1 are read out. In the lap time recall mode, the date and memory number “4” are displayed in the first segment display area 131, and the current time is displayed in the second segment display area 132. In the dot display area, the guidance "LAP / RECALL" indicating the recall mode is displayed for 2 seconds, and then the latest pulse rate transition for each lap is displayed.

When the button switch 112 located in the 4 o'clock direction is pressed from this mode, the mode is switched to the pulse wave measurement result recall mode (step ST14). This mode is a mode in which a temporal change in the pulse rate measured in the past using the wrist-worn pulse wave measuring device 1 is read. Further, in the wrist-worn pulse wave measuring device 1 of this example, the device body 10 is provided with a function of measuring the temporal change of the pitch during the marathon by using the acceleration sensor. It is also possible to read out the time change of the measured pitch. In the pulse wave measurement result recall mode, the date is displayed in the first segment display area 131 and the current time is displayed in the second segment display area 132. In the dot display area 134, "RESULT / RECALL" is displayed for 2 seconds, and then, using the compression processing described above,
A graph showing the change over time of the average pulse rate is displayed.

When the button switch 112 in the 4 o'clock direction is pressed again from this mode, the mode returns to the timepiece mode (step ST11) as shown by the arrow P1. Further, in steps ST12 to ST14, even when there is no input for 10 minutes, the mode automatically returns to the timepiece mode (step ST11) as indicated by arrow P2. When returning to this clock mode, the first segment display area 1
The date is displayed in 31 and the second segment display area 13
The current time is displayed in 2.

In this example, when the clock mode is selected,
In the dot display area 134, as shown in an enlarged view in FIG. 14A, “TIME” is displayed as returning to the clock mode, but this guidance display is as shown in FIG. 14B. It disappears automatically after 2 seconds, and the normal state of the clock mode (step ST15) is entered. In the normal state of the timepiece mode, nothing is displayed in the dot display area 134.

In this clock mode, if the button switch 112 in the 4 o'clock direction is pulled out by one step, the mode is switched to the time and date correction mode. That is, in FIG. 15, when the button switch 112 in the direction of 4 o'clock is pulled out by one step from the normal state of the timepiece mode (step ST15), first, the mode is switched to the second set mode (step ST21). In this mode, when the button switch 117 located on the upper side of the device body 10 is pushed, the value is incremented by one, and conversely, when the button switch 118 located on the lower side of the device body 10 is pushed, the value becomes 1. Go down one by one. Button switch 11 at 7 o'clock from this mode
Press 5 to switch to minute setting mode (step S
T22). After that, the button switch 115 in the 7 o'clock direction
Each time is pressed, the time setting mode (step ST2
3) The mode is switched to the year setting mode (step ST24), the month setting mode (step ST25), the day setting mode (step ST26), and the mode for selecting 12 hours / 24 hours display (step ST27), and again. Return to the second set mode (step ST21).

During this time, in any mode, if the button switch 112 in the 4 o'clock direction is pushed in, the mode returns to the clock mode. Also at this time, as described with reference to FIGS. 14A and 14B, the clock mode (step ST1
Returning to 1), the dot display area 134 displays "TI
The guide display with "ME" is displayed for 2 seconds, and after that,
This guidance display automatically disappears, and the normal state of the clock mode (step ST15) is entered.

As described above, when returning to the time mode, the display of "TIME" for guiding the selection of the clock mode is displayed in the dot display area 134 for only 2 seconds, and after 2 seconds, the guidance display is automatically displayed. It is erased to the normal state of the clock mode. In other words, the dots are displayed for the minimum time required to guide the user to the mode,
Power saving is achieved by displaying a mode display indicating that the area is off and that the clock mode is in the normal state.

(Running Mode as Pulse Rate Monitor) In the arm-mounted pulse wave measuring device 1 of this example, from any state,
When the connector piece 80 is attached to the connector section 70, a signal to that effect is automatically input to the control section 5 (mode switching section 564) as described with reference to FIG. As indicated by the arrow P3, the process moves to the running mode (step ST12). That is, the connector portion 7
The external operation of mounting the connector piece 80 on 0 is an operation for switching to the running mode as the pulse rate monitor. The running mode at this time is a mode in which not only the stopwatch operates but also the pulse rate during running can be measured.

The function of the pulse rate monitor in the running mode will be described with reference to FIGS. 16 and 17.

First, when the connector piece 80 is attached to the connector section 70, the mode is switched to the running mode as shown in FIG. 16 (step ST31). At this time, the current time is displayed in the first segment display area 131 of the liquid crystal display device as shown in FIG.
In the segment display area 132 of "0:00" 00 "0
“0” is displayed, and “RUN” is displayed in the dot display area 134. In addition, the heart mark flashes in the third segment display area 133 to indicate that the mode has been switched to the running mode as the pulse rate monitor.

The initialization processing is performed by this mode switching. Two seconds after the initialization process is started, as shown in FIG.
As shown in FIG. 6, a pulse wave signal is taken in to measure the initial pulse rate. At this time, dot display area 1
34 displays "STOP / 5" (step ST3
2) and "MOTION / 4" are displayed (step ST
33) and 2) are alternately performed at 2 Hz, and the message “Do not move for 5 seconds” is displayed. The number displayed at this time is a countdown for 5 seconds and is switched. In this way, after the initial value of the pulse rate is measured, it is in a standby state until the button switch 117 located on the upper side of the surface of the apparatus body 10 is pressed so as to start measuring the time (step ST34). .

In this standby state, the dot display area 134
17B, the original waveform of the pulse wave signal is graphically displayed as shown in FIG. The original waveform displayed here is
The latest data. Therefore, by confirming the waveform and level of the original waveform of the pulse wave signal before starting the measurement (marathon) of the pulse wave information, it is possible to determine in detail whether the mounting state of the LED 31 or the phototransistor 32 is good or bad. Further, by adjusting the LED 31 and the phototransistor 32 while checking the shape and level of the original waveform, the positions of the LED 31 and the phototransistor 32 can be set to the optimum positions. Moreover, it is possible to confirm in advance whether the ambient temperature or humidity is an environment in which pulse wave information can be measured. Furthermore, such a function can be used for inspection of the wrist-worn pulse wave measuring device 1 at the time of manufacture. Further, since the original waveform is displayed graphically, it is possible to confirm whether or not the time axis has changed due to battery exhaustion or the like. In the third segment display area 132, the initial pulse rate "75" is displayed.
Is displayed.

When the marathon is started from this state and the button switch 117 located on the upper side of the surface of the apparatus main body 10 is pressed at the same time, the elapsed time is measured and the pulse rate is also measured (step ST35). .

As for these measurement results, as shown in FIG. 11A, first, the elapsed time is displayed in the second segment display area 132, and the temporal change of the pulse rate is displayed in the dot display area 134. Graphically displayed. The graphic display performed at this time is a bar graph extending from the bottom to the top. During this period, the third segment display area 1
In 33, the scale of the vertical axis of the graph displayed in the dot display area 134 and the pulse rate at that time are displayed. In this state, when the pulse rate falls within the range (within the specified range from pulse rate 120 to 168), the pulse rate is graphically displayed as a difference from the preset reference pulse rate (step ST36). That is, as shown in FIG. 11B, the graphic display performed in the dot display area 134 changes. The graphic display at this time is
It is a display in which a portion corresponding to a difference from a predetermined value is displayed as a bar graph extending vertically (in the positive and negative directions). A mark indicating the designated range of the pulse rate is displayed at the right end of the dot display area 134. In the meantime, in the dot display area 134 of the liquid crystal display device 13, the temporal change of the pulse rate is graphically displayed.

During this time, the button switch 1 located at 8 o'clock
When 14 is pressed, a temporal change in pitch is graphically displayed in the dot display area 134 (step ST37).
The graphic display performed at this time is, as shown in FIG. 12A, a line graph in which the lowest position on the vertical axis is the pitch 0 and the substantially middle position is the pitch 170. At this time, in the third segment display area 133, the scale of the vertical axis of the graph displayed in the dot display area 134 (meaning that the approximate middle position of the vertical axis is the pitch 170) and the pitch at that time are displayed. It

When the button switch 114 in the 8 o'clock direction is pressed again from this state, a temporal change in the pulse rate is displayed in the dot display area 134 (step ST3).
Return to 6).

When the button switch 116 located on the lower side of the surface of the apparatus main body 10 is pressed while passing through a predetermined passing point, the lap time at that time is displayed in the first segment display area 131 (step ST38). . And
After 10 seconds, the process automatically returns to step ST36.

Then, when the player arrives at the goal and presses the button switch 117 located on the upper side of the surface of the apparatus main body 10 at the same time, the measurement of the pulse rate, the pitch, and the time is stopped, and the dot display area 134 displays "COOLING / DOW
"N" is displayed (step ST39). However, in the dot display area 134, a temporal change in the pulse rate after the goal is achieved is graphically displayed as a pulse recovery characteristic (step ST40).

The graphic display of the pulse recovery characteristic is a bar graph display extending from the bottom to the top as shown in FIG. 12 (b). Then, after a lapse of a predetermined time, as shown in FIG. 12C, the display is switched to a graphic display by a bar graph extending from the lower side to the upper side. During this period, the scale of the vertical axis of the graph displayed in the dot display area 134 and the pulse rate at that time are displayed in the third segment display area 133.

When the button switch 114 in the 8 o'clock direction is pressed from this state, "PUL" is displayed in the dot display area 134.
After “SE / RESULT” is displayed for 1.5 seconds (step ST41), the dot display area 134 displays the temporal change of the pulse rate in the current marathon (step ST42). In addition, when the button switch 114 located in the 8 o'clock direction is pressed, the “PITCH
"/ RESULT" is displayed for 1.5 seconds (step ST43), and then the dot display area 134 displays the temporal change of the pitch in this marathon (step ST44). Furthermore, the button switch 1 at 8 o'clock
When you press 14, the dot display area 134 displays “COOLIN
"G / DOWN" is displayed for 1.5 seconds (step S
(T45), the process returns to the state (step ST40) in which the temporal change in the pulse rate after reaching the dot display area 134 is graphically displayed as the pulse recovery characteristic.

When the button switch 116 located below the surface of the apparatus main body 10 is pressed after the goal is reached, a message "PROTECT / MEMO? Y" indicating whether or not the result of this time is stored in the dot display area 134 is displayed. Is displayed (step ST46), and the button switch 117 located on the upper surface of the apparatus body 10 is pressed to reply "YES",
In the dot display area 134, "MEMORY" is displayed as the result is being stored (step ST4).
7) After 2 seconds, it returns to the initial state (step ST31).

At this time, it is the memory 563 (determined data storage means) shown in FIG. 7 that stores the result of this time as the confirmed data, in which the first and second data memories 611 and 612 are stored. Among them, the compressed data stored in the data memory having a large amount of data is stored together with the time data. Here, the area secured in the memory 563 is the measured data of ten times. Therefore,
In this example, it is possible to specify and delete the measurement result that has been stored until then, and store new fixed data therein.

After the measurement of the pulse rate is completed,
When the button switch 112 in the 4 o'clock direction is pressed,
As shown in 1, the mode is switched to the lap time recall mode (step ST13). When the button switch 112 in the 4 o'clock direction is pressed from this mode, the mode is switched to the pulse wave measurement result recall mode (step ST14). Also in this mode, the dot display area 134 can graphically display the temporal change of the pulse rate. When the button switch 112 in the 4 o'clock direction is pressed from this state, the mode returns to the timepiece mode (step ST11).

When returning to this mode, the date is displayed in the first segment display area 131 and the current time is displayed in the second segment display area 132. Further, in the dot display area 134, it is displayed that the time is returned to the clock mode by "T
Although a guidance display such as "IME" is displayed, this display automatically disappears after 2 seconds as shown by arrow P4, and the normal state of the clock mode (step ST15) is set.

(Sub-operation of mode switching unit) Referring again to FIG. 7, in the arm-mounted pulse wave measuring apparatus 1 of this example, the battery 59 is used.
A switch mechanism 500 for detecting the presence / absence of a battery is interposed between the IC 56 and the line 57 electrically connected to the positive electrode and the terminals of the capacitive elements 528 and 558, and the switch mechanism 500 includes It is designed to open and close in conjunction with the attachment / detachment operation of the battery 59. Therefore, in the mode switching unit 564 of the IC 56, since the battery 59 is removed for replacement, the switch mechanism 500 is closed and the switch mechanism 5
A predetermined signal (capacitance element 52
8 terminal voltage), the operation is switched from the normal mode to the energy saving mode in which a part of the operation performed in the apparatus body 10 is forcibly stopped. In this energy-saving mode, the mode switching unit 564 first stops the power supply to the alarm sound generation booster circuit 580, stops the output of the clock signal to the IC 50, and further, the liquid crystal display booster circuit 541.
In addition to that, the liquid crystal display drive circuit 562 sets the common voltage and the segment voltage for the liquid crystal display device 13 to the same potential, and completely stops the display there. In the energy saving mode, the electric power necessary for continuing the time counting operation and backing up the memories 563 and 501 is supplied from the capacitive elements 528 and 558. Therefore, since the timekeeping operation is continued even after the battery 59 is removed, it is not necessary to adjust the time after replacing the battery 59. Until then, the memory 56
The data stored in 3, 501, etc. is not lost.

When the battery 59 is attached, the switch mechanism 500 is in an open state, so that no signal is input. However, even in this state, the battery 59 does not supply power unless the back cover 118 is attached. Since such a state is monitored by the voltage detector 543, after the battery 59 is mounted, the back cover 118 is also mounted, and the power supply from the battery 59 is restarted, and then the mode switching unit 564 starts the energy saving mode. Return to normal mode. In addition, the mode switching unit 564 displays the voltage value between the terminals of the newly installed battery 59 detected by the voltage detector 543, on the liquid crystal display device 13.
To be displayed immediately.

(Main Effects of the Embodiment) As described above, in the wrist-worn pulse wave measuring apparatus 1 according to the present embodiment, as described with reference to FIGS. 8 to 10 and Table 1, While compressing the data with the lapse of time, the number of data stored in the first and second data memories 611 and 612 is reduced, respectively, while the display mode switching unit 536 controls the first and second data memories 611 and 612.
Of the data memories 611 and 612 of FIG. 3B, the dot display area 134 of the liquid crystal display device 13 displays the temporal change of the pulse rate based on the compressed data stored in the data memory having the largest number of data. It is possible to display. Therefore, assuming that the number of data stored in the first or second data memory 611 or 612 reaches 30, the compressed data stored up to that point is compressed to 15 data which is one rank higher in compression rate. Since the display is performed based on the compressed data stored in the data memory having a large amount of data even when the data is redone, the time lapse of the measurement result can be shortened without increasing the dot display area 134. However, it can be displayed properly.

Further, in the first data compression section 66, the compression rate is switched to 1, 2, 4, 8 ...
In the second data compression unit 67, the compression ratio is 3 times, 6 times, 1
Since it is switched to 2 times, 24 times, etc., the compression rate switches substantially continuously with the passage of time. Therefore, even if data compression is performed, the temporal change of the measurement result only changes minutely, and thus the temporal change of the measurement result can be known in detail at any time.

(Other Embodiments) Although the compression process is performed in the two systems of this example, the compression process may be performed in three or more systems. Further, the invention is not limited to the device for measuring the pulse rate, but may be applied to a device for measuring atmospheric pressure, water pressure, temperature, humidity or the like.

[0113]

As described above, in the measuring apparatus according to the present invention, the measurement result of the pulse rate or the like is compressed into data of two or more compression rates which are different with respect to time, and the compressed data is compressed. While being stored in the storage means, the display control means is characterized by displaying the temporal change of the measurement result on the display device based on the compressed data stored in the compressed data storage means having the largest number of data. Have. Therefore, according to the present invention, even if the data is compressed, this data is not displayed as it is, but the data stored in the compressed data storage means having the largest number of data is displayed. The drawbacks of are eliminated. Therefore, the time lapse of the measurement result can be properly performed regardless of the length of the measurement time without expanding the display device.

In the present invention, as the data compression means,
The first data compression means for switching the compression rate to 1 time, 2 times, 4 times, 8 times ..., and the compression rate to 3 times, 6 times, 12 times,
When the second data compression means for switching to 24 times ... Is provided, the compression rate is switched substantially continuously. Therefore, even if data compression is performed, the change over time in the measurement results is
Since it only changes minutely, you can always know in detail the change over time in the measurement results.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing an overall configuration of an arm-mounted pulse wave measuring device according to an embodiment of the present invention and a usage state.

FIG. 2 is a plan view of a device body of the wrist-worn pulse wave measuring device shown in FIG.

FIG. 3 is an explanatory view of the wristwatch-type pulse wave measuring device shown in FIG. 1 when viewed from the wristwatch at 3 o'clock.

FIG. 4 is a cross-sectional view of a sensor unit used in the wrist-worn pulse wave measuring device shown in FIG.

5 is an explanatory diagram showing a state in which the sensor unit used in the arm-mounted pulse wave measuring device shown in FIG. 1 is worn on a finger.

6 is an explanatory diagram showing an electrical connection relationship in a connector portion of the wrist-worn pulse wave measuring device shown in FIG.

7 is a block diagram showing a part of a function of a control unit of the wrist worn pulse wave measuring device shown in FIG.

8 is a block diagram showing a part of the functions of a pulse wave data processing unit, a display data processing unit, and a display control unit configured in the control unit shown in FIG.

9 is a block diagram showing a part of the function of the display data processing unit shown in FIG.

10 is a flowchart showing the operation of the display data processing unit shown in FIG.

11A is an explanatory view showing a display form until the pulse rate reaches a predetermined range in the wrist-worn pulse wave measuring device shown in FIG. 1, and FIG. 11B is a pulse rate predetermined. Explanatory diagram showing a display form after reaching the range of, (c),
It is explanatory drawing which shows the display form immediately after performing data compression.

12 (a) is an explanatory diagram showing a display form when a temporal change in pitch is shown in the wrist-worn pulse wave measuring device shown in FIG. 1, and FIG. 12 (b) stops pulse rate measurement. An explanatory view showing a display form when the pulse rate is within a predetermined range after the operation of, and (c) is an explanation showing a display form when the pulse rate is out of the predetermined range. It is a figure.

FIG. 13 is an explanatory diagram showing each mode of the arm-mounted pulse wave measuring device for explaining the function of the mode switching unit of the arm-mounted pulse wave measuring device shown in FIG. 1.

14A is an explanatory diagram showing a guide display when the clock mode is selected from the modes shown in FIG. 12, and FIG.
[Fig. 6] is an explanatory diagram showing a state in which the guide display has disappeared.

FIG. 15 is an explanatory diagram showing the contents of the display when the time and the like are set in the clock mode of the modes shown in FIG.

16 is a perspective view showing the wrist-worn pulse wave measuring device shown in FIG.
It is explanatory drawing for demonstrating the function in the running mode as a pulse rate monitor.

17 (a) is an explanatory diagram showing the content of the display that the running mode as the pulse rate monitor shown in FIG. 16 has been switched, and FIG. 17 (b) shows the content of the display before starting the measurement in this mode. It is an explanatory view shown.

Continuation of the front page (56) Reference JP-A-5-18788 (JP, A) JP-A-62-191914 (JP, A) JP-A-4-134263 (JP, A) (58) Fields investigated (Int .Cl. ⁷ , DB name) G01D 9/00 A61B 5/00 G01D 7/00 G06F 3/05 331

Claims (6)

(57) [Claims] 1. A sensor means for measuring atmospheric pressure, temperature, pulse rate, or the like, a display device for displaying a temporal change of a measurement result of the sensor means, and an output from the sensor means at regular intervals. A plurality of data compression means capable of data compression of the measurement result obtained at a compression rate of two ranks or more with respect to time, and the compressed data obtained by the data compression means are stored in correspondence with the respective data compression means. A plurality of compressed data storage means, and when the number of stored data in these compressed data storage means reaches a set value set by the compression rank, the compressed data stored in the compressed data storage means , The compression rate is recompressed into the data whose rank is further increased by one rank, and thereafter, the compressed data storage means compresses the data at the compression rate which is increased by one rank. Data compression control means for controlling the data compression means so as to store it as compressed data, and display of the temporal change of the measurement result on the display device based on the compressed data stored in the compressed data storage means. And a display control means for performing the measurement. 2. The data compression means according to claim 1, wherein the number of data stored in the corresponding compressed data storage means is a set value after the data compression is performed at a compression rate of 1 with respect to the measurement result. Every 2 times, the compression rate after that is 2
The first data compression means for increasing the number of times and the data compression at the compression rate of 3 times with respect to the measurement result, and thereafter each time the number of data stored in the corresponding compressed data storage means reaches the set value. A measuring device comprising: a second data compression unit that doubles a subsequent compression rate. 3. The display control means according to claim 1 or 2, wherein after the measurement, the display control means is stored in the compressed data storage means having the largest number of stored data among the respective compressed data storage means. A measuring device, wherein the display device displays a temporal change of the measurement result based on compressed data. 4. The display control means according to claim 1 or 2, wherein the compressed data stored up to that time when the number of data stored in the compressed data storage means reaches a set value is further compressed. When the data is recompressed to one rank higher, it is determined which compressed data storage means has the largest number of compressed data at this time, and the measurement result on the display device changes with time. Is switched to the display based on the compressed data stored in the compressed data storage means having the largest number of data. 5. The measuring device according to claim 1, wherein the display device has a dot display area for graphically displaying a time course of the measurement result. 6. The compressed data storage means according to claim 1, further comprising a compressed data storage means having the largest number of stored data after the measurement is completed. A measuring device having a definite data storage means for storing compressed data based on an external operation.