JPS62246348A - Electronic hemomanometer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention 10 Background of the Invention (1) Technical Field The present invention relates to an electronic blood pressure monitor, and more particularly to an electronic blood pressure monitor that saves absolute power consumption by activating multiple independent circuits and peripheral devices. It is related to.

(2) Prior art and its problems In conventional electronic blood pressure monitors, each independent circuit and its peripheral devices are powered on before processing, and the peripheral devices are powered on manually. It's a hassle,
Furthermore, power consumption is increased by turning on power to unnecessary devices or circuits.

II. Purpose of the Invention The present invention has been made in view of the above-mentioned prior art, and its purpose is to power on only the circuits or devices necessary for blood pressure measurement processing and execute the processing, and also to perform the processing by turning on the power to only the circuits or devices necessary for blood pressure measurement processing. To provide an electronic blood pressure monitor capable of reducing power consumption by turning on the power only when necessary.

(2) Structure of the Invention The present invention for achieving the above object has the following structure.

That is, an electronic blood pressure monitor constitutes a system including peripheral elements related to blood pressure measurement and a control unit that controls the peripheral elements, and the control unit controls the peripheral elements only when it is necessary to drive each peripheral element related to blood pressure measurement. It has a power supply means for supplying power to.

Further, one of the peripheral devices may be a pressure pump.

Additionally, the peripheral element may be a printer.

IV. DETAILED DESCRIPTION AND OPERATION OF THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a block diagram of blood pressure measurement in this embodiment.

In the figure, solid lines represent power supply lines, and broken lines represent control lines, respectively. Reference numeral 1 denotes a battery that serves as a power source for each circuit and peripheral devices in the entire block diagram.

Reference numeral 2a is a switch that determines whether or not there is a cover of the electronic blood pressure monitor, and when the cover is removed, it becomes "ON" and connects the power supply stabilizing circuit 7, switches 2b, 2c, and LC, which will be described later.
Power is supplied to the D driver 8a and LCD 8b. Also 2b.

2c are printers 13. This is a switch that prompts the pump 14 to be driven. 3 is a CPU that controls each circuit and each peripheral device, and 4 is a ROM in which an operating program shown in a flowchart shown in FIG. 3, which will be described later, is stored.

Reference numeral 5 denotes a real-time clock (RTC) which is constantly supplied with power and has the same function as a clock, and which generates an interrupt signal to the CPU 3 every minute, for example. Further, 6 is a gate that operates when switch 2 ah<ON”L. 7 is a power stabilization circuit that supplies stable power to the CPU 3 and various peripheral devices, and the signal from gate 6 is When it is "1", power is supplied to various circuits. 8 is an LCD driver for driving the display LCD, and when the switch 2a is "ON", that is, the cover is removed, the power is supplied. Reference numeral 9 is a RAM that stores various measurement value data, and like the above-mentioned RTC 5, power is constantly supplied to back up the data. Reference numeral 10 indicates Korotkoff sound from the arm cuff related to the blood pressure monitor. This is an A/D converter that converts the analog quantity sent from the wristband, pressure sensor, etc. into a digital quantity and outputs it to the CPU 3. In addition, 11 is an analog circuit consisting of an amplifier that amplifies the pulse sound from the arm cuff. 12a to 12d are power supply switches that control the power supply to the printer 13, pump 14, or A/D converter 10 and analog circuit 11 under the control of the CPU 3.In addition, in this block diagram, the RTC5
, the control lines of the switches 2b and 2c, and the output terminal PO of the CPU 3 are pulled up to Vdd so that they become high level, that is, "1" when the switch 2sr is turned on.

In the case of the electronic sphygmomanometer configured as described above, there is no need to supply power to the pump 14 when, for example, the blood pressure measurement is finished and the results are printed, and conversely, when processing such as printing, the analog circuit is not required. 11, the A/D converter 10, or the pump 14, which is a peripheral device, does not need to be driven or operated.

Considering each processing stage in this way, it can be seen that power can be supplied to necessary devices and circuits according to the stage.

Table 1 provides a rough summary of these various processing stages.
It is.

Table 1 In Table 1, "x" indicates a state in which power is not supplied, "Δ" indicates a state in which power is sometimes supplied, and "O" indicates a state in which power is always supplied.

In the backup mode, power is supplied to the RTC 5, which is a clock, and the backup RAM. At this time, the RTC 5, for example, outputs CP every minute, which is the smallest digit of the clock.
An interrupt signal is given to U3, and the signal is also connected to gate 6. On the other hand, RAM9
Power is supplied to the device to retain, or back up, data measured in the past. In this mode, other power supplies, such as CPtJ3, may be in the "OFF" state.

Next, the time display mode will be explained. The time display mode means a state in which the cover of the electronic blood pressure monitor is removed, and at this time, the time is displayed on the LCDJ 3b, which is the display section of the electronic blood pressure monitor. In this mode, switch 2a in Figure 1
enters the "ON" state, and power is first supplied to the LCD 8b, LCD driver 8a, gate 6, and switches 2b and 2c, respectively. At this time, the output of the gate 6 is 0'', so the power supply voltage is not output from the power supply stabilization circuit 7, and the CPU 3 is naturally not supplied with power.However, R
As can be seen from this block diagram, the TC5 is operating at this time, and outputs a negative signal having a predetermined time length to the CPU 3 and the gate 6 every minute. When this signal is input, the output of the gate 6 becomes "1", and power is supplied from the power supply stabilizing circuit 7 to the CPU 3 and ICs (not shown) necessary for the operation of the CPU 3.

When the power is turned on, the CPU 3 immediately outputs its output P while the output signal of the RTC 5 is at the "O" level.
Set O to "0"' to prevent the power from turning off, and to
5 reads the current time, writes the data to the LCD driver 8a, latches it, and displays it on the LCD 8b.When the processing of 0 or more is completed, CPtJ3 outputs the output terminal P.
O is set to "1" and the power of the CPU 3 itself is turned off.

Also, even when the power of CPU 3 is OFF, the LCD driver 8
Since the a data is latched, it continues to be displayed on the LCD 8b. By performing this operation every minute, the CPU 3 is powered on approximately every minute in the clock display mode, and its power consumption becomes extremely small. Therefore, in this mode, CPtJ3 is a "Δ" mark, and power only needs to be supplied to the RTC 5, RAM 9, LCD 8b, LCD driver 8a, and power stabilization circuit 7.

Next, D12, the blood pressure measurement mode will be explained.

By operating the clove switch 2c, power is supplied to the CPU 3 in the same way as in the clock display mode. When the power is turned on, the CPU 3 first sets the output terminal PO to O'' to prevent the power to the CPU 3 from being turned off, and performs the following processing.

First, send a signal to the power supply switches 12b to 12d,
Power is applied to each of the pump 14, A/D converter 10, and analog circuit 11. Next, the systolic blood pressure value, diastolic blood pressure value, and pulse rate related to blood pressure measurement are each measured, the LCD driver 8a is driven to display them on the LCD 8b, and the measurement results are stored in the RAM 9. 2C
Determine whether or not is pressed, and if not, CPU3
turns off each of the power supply switches 12a to 12d, then sets the output terminal po to 1'' to turn off the power to the CPU 3'EL and each peripheral circuit.

In addition, in the print mode, in order to output the previously measured value data stored in RAMQ, the currently measured blood pressure value, pulse rate, etc. to the printer, when it is detected that the switch 2b has been pressed, First, the output terminal PO is set to "O" to prevent the power to the CPU 3 from being turned off. Next, the power supply switch 12a is turned "ON" to supply power to the printer 13. After that, the data stored in the RAM 9 is Output to printer.

The processing in each mode has been described above, and the flowchart in FIG. 2 shows this as a series of processing operations.

This operation will be explained below. Furthermore, in the following explanation, each mode is as described above.

In step S1, it is determined whether the electronic blood pressure monitor has a cover, and if the cover is present, the electronic blood pressure monitor operates according to the backup mode described above in step S2. If there is no cover, in step S3 the signal generated every minute from the RTC 5 changes to the time display mode, and the LCD 8b
to display the time. At this time, switch 2b is set to “O”.
It is determined whether it is "N" or not (step S4), and when it is "ON", the process moves to step S5 and enters the print mode, and the measurement data up to the previous time is read from the RAM 9 and output to the printer 13. Next, in step S6, it is determined whether the switch 2C is "ON" or not, and when it is "OFF", the process returns to step S1. When the switch 2C is "ON", the process moves to step S7 and enters the blood pressure measurement mode, where the systolic blood pressure and LC that measures the diastolic blood pressure, pulse rate, etc., and the measured data
It is displayed on the LCD 8b via the D driver 8a and stored in the RAM 9 together with the time (step S8). Next, in step S9, the state of the switch 2C is detected and turned ON.
”, the process from step S7 is executed again,
When the switch 2b is 'OFF', the state of the switch 2b is detected in step S10. When the switch 2b is 'ON', the measurement data measured in step S is output to the printer 13, and when it is 'OFF', the state of the switch 2b is detected in step S10 for a predetermined time. The operation of detecting the state of switch 2b is repeated, and if switch 2b is still "OFF", the process returns to step S1.

As described above, according to this embodiment, in each process, by powering on only the necessary circuits and their peripheral devices, it is possible to extend the life of the battery.

In particular, in the clock mode, the CPU is powered on every minute, which greatly increases the CPU's drive rate with respect to time.

Furthermore, power is automatically supplied to each peripheral device, which has the effect of saving time and effort. Further, in this embodiment, an example in which a battery is used as a power source has been described, but the present invention is not limited to this. For example, when applied to a household AC power source, the power consumption can be extremely reduced.

Further, in this embodiment, an example in which the present invention is applied to an electronic blood pressure monitor has been described, but the present invention is not limited to this.

■9 Specific Effects of the Invention As described above, according to the present invention, it is possible to increase the driving rate of each independent circuit and its peripheral devices with respect to time with an extremely simple configuration, and it is possible to reduce power consumption. becomes.

Furthermore, the supply of power to peripheral devices is automatically processed, which saves time and effort.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an electronic blood pressure monitor according to this embodiment, and FIG. 2 is an operation flowchart according to this embodiment. In the figure, 1...Battery, 2a-2C...Switch, 3.
・・CPU, 4・・ROM, 5・RTC, 6・・
・Gate, 7... Power supply stabilization circuit, 8a...-LCD
Driver, 8b...LCD, 9...-RAM, 10...
・A/D converter, 11...Analog circuit, 12a-1
2d...Power supply switch, 13-...Printer, 1
4... It is a pump.

Claims (2)

[Claims] (1) An electronic blood pressure monitor that configures a system with peripheral elements related to blood pressure measurement and a control unit that controls the peripheral elements, wherein the control unit controls the peripheral elements only when it is necessary to drive each peripheral element related to blood pressure measurement. An electronic blood pressure monitor characterized by having a power supply means for supplying power to the element. (2) An electronic blood pressure monitor as set forth in claim 1, wherein the peripheral device is a pressure pump.(3) Claim 1, wherein the peripheral element is a printer. electronic blood pressure monitor.