CN2636817Y

CN2636817Y - Portable electrocardiogram monitor

Info

Publication number: CN2636817Y
Application number: CN 03210019
Authority: CN
Inventors: 沈建民
Original assignee: ZHEJIANG UNIV MICROSYSTEM CO Ltd
Current assignee: ZHEJIANG UNIV MICROSYSTEM CO Ltd
Priority date: 2003-08-22
Filing date: 2003-08-22
Publication date: 2004-09-01
Anticipated expiration: 2013-08-22

Abstract

The utility model discloses a portable electrocardiogram monitor which is provided with a lead electric pole, an instrument amplifier, a high pass, a low pass amplifying circuit, a digital potentiometer, a processor, a memory module, a display module, a clock module, a key board and a USB or Modem interface, wherein the lead electric pole is orderly connected with the instrument amplifier, the low pass amplifying circuit and the processor; the low pass amplifying circuit is orderly connected with the digital potentiometer and the processor; then the processor is respectively connected with the memory module, the display module, the clock module, the key board and the USB or Modem interface. The utility model conforms to the requirement of an electrocardiogram monitor of a hospital and reaches or exceeds the concerned standard of China. The portable electrocardiogram monitor has easy and convenient operation, clear and intuitionistic display, accurate signal acquisition, flexible recording mode, fast and correct communication and cabinet shape design; the utility model is completely suitable for family use. The utility model can be used independently in order to bring convenience for families; the utility model can also be used with special software so that a medical institution and a patient can use cooperatively. The utility model is mainly characterized in that the utility model is intelligentized, systematized, functionally integrated, small sized and energy-saving.

Description

Portable ecg monitor

Technical field

This utility model relates to a kind of portable ecg monitor.

Background technology

Existing portable ecg monitor generally has following function: ecg signal acquiring, and the signal storage of short time, heart rate statistics shows ecg wave form, and electrocardiosignal is done some simple analysis, prompting abnormal alarm, no transfer function or pass through phone transmission.Its volume is bigger than normal, makes patient carry inconvenience; Memory time is short, variable condition that can't trace trap abnormal electrocardiogram signal; Transmission means falls behind, data that can't transmission of large capacity, and make mistakes easily in the transmission course; Some monitor has been used wave trap in analog circuit, make the waveform display distortion, is unfavorable for diagnosis.In addition, resemble dynamic electrocardiogram recording instrument, though the time long enough of record must just can read recorded data with special equipment to hospital, concerning patient, this resembles a black box, is not suitable for family and uses.

In a word, a class performance design is too simple in the existing electrocardiogram monitor, uses circuit outmoded, and practical value is not high, is difficult to obtain the approval of hospital doctor; Another kind of, though performance near professional standards, is tended to design for medical institutions, be not suitable for family and use.

Summary of the invention

The purpose of this utility model provides a kind of portable ecg monitor.

It has crosslinking electrode, instrument amplifier, high pass, low pass amplifying circuit, digital regulation resistance, processor, memory module, display module, clock module, keyboard, USB or Modem interface, crosslinking electrode joins with instrument amplifier, low pass amplifying circuit, processor successively, the low pass amplifying circuit joins with digital regulation resistance, processor successively, and processor joins with memory module, display module, clock module, keyboard, USB or Modem interface respectively again.

This utility model meets hospital's cardiac monitoring requirement, meets or exceeds relative national standards, and this monitor is easy and simple to handle, shows clear and visuality, and signals collecting is accurate, and recording mode is flexible, transmit errorlessly fast, and configuration design is small and exquisite attractive in appearance, is fit to family's use fully.It can independently use, to make things convenient for family; Also can be supporting with special-purpose software, so that medical institutions and patient are used.The product main feature: intellectuality, systematization, function is integrated, miniature energy-savingization.

Description of drawings

Fig. 1 is an electrocardiogram equipment allomeric function block diagram;

Fig. 2 is the interface circuit schematic diagram of processor and memorizer;

Fig. 3 is the interface circuit schematic diagram of processor and usb communication module;

Fig. 4 is the interface circuit schematic diagram of processor and Modem communication module;

Fig. 5 is the interface circuit schematic diagram of processor and clock chip;

Fig. 6 is the interface circuit schematic diagram of processor and button;

Fig. 7 is the interface circuit schematic diagram of processor and Liquid Crystal Module.

The specific embodiment

This utility model adopts the MSP430F149 single-chip microcomputer of TI company, it has the characteristics of super low-power consumption, carry 12 A/D, have abundant mouth resource and peripheral hardware resource, can be easily and FLASH storage chip, USB or modem coffret chip, lcd display module, clock module clock and keyboard link to each other.

Human ecg signal at first passes through the instrument amplifier of crosslinking electrode by low noise, high input impedance, high-gain, high cmrr, again through high pass, low-pass filtering amplifying circuit, the A/D converter that is carried by processor becomes digital signal with the analog electrocardiogram conversion of signals, according to the automatic control figure potentiometer of the amplitude of signal, adjust Amplifier Gain, simultaneously provide real-time acquisition time, the electrocardiogram (ECG) data that comprises temporal information is deposited in the Flash memory module with continuous record or two kinds of patterns of snippet recording by clock module.In addition apparatus preparation high-res dot matrix figure LCD display module and keyboard, can show ecg wave form, heart rate, the heart rate alarm signal, prompting lead connection status and low-voltage provide Chinese and English menu and user interactions.The electrocardiogram (ECG) data that is stored among the Flash can upload to PC by USB interface, or directly passes to server by the Modem interface.

Fig. 1 electrocardiogram equipment allomeric function block diagram.Among the figure

Processor: adopt MSP430F149

Instrument amplifier: adopt AD620 or INA128U

High pass, low pass are amplified: adopt LMC6464

Digital regulation resistance: adopt MAX5413

Memorizer: adopt K9F5608U0B

Display module: adopt graphic dot matrix Liquid Crystal Module PDA160100

Transport module: adopt USB interface chip USBN9603

Clock module: clock chip adopts DS1302Z

The interface circuit schematic diagram of Fig. 2 processor and memorizer.

Pass through 8 I/O mouth lines and the realization of some control lines control between processor and the memorizer to K9F5608U0b.Control line is respectively:

CLE: the command latch enable end, high level is effective.

ALE: the address latch Enable Pin, high level is effective.

CE: chip select line, low level is effective.

WE: write and enable mouth, order, address and data are locked at the rising edge of signal.

RE: read to enable mouth, data are delivered on the I/O mouth line at the trailing edge of this mouthful, and made the internal column address depositor increase 1.

WP: Write-protect notch, low level is effective.When its when low, programming and erase operation are forbidden.

R/B: mode of operation index signal.

The interface circuit schematic diagram of Fig. 3 processor and USB.

The data address bus of USB interface chip USBN9603 links to each other with the I/O mouth of processor.Control line is respectively:

CS: chip select line, low level is effective.

RD: read to enable mouth, low level is effective.

WR: write and enable mouth, low level is effective.

AO: the address bus pattern is provided with line.

The interface circuit schematic diagram of Fig. 4 processor and Modem.

Realize the RS232 level conversion by MAX3387, constitute the Modem communication interface.Link to each other by 4 lines between processor and the Modem, they are respectively:

RX: receive line.

TX: send line.

DCD: data carrier detects.

DSR: data terminal ready detects.

The interface circuit schematic diagram of Fig. 5 processor and clock chip.

Clock chip DS1302Z, processor passes through RST, I/O, three ports of SCLK are programmed to it.

The interface circuit schematic diagram of Fig. 6 processor and button.

BT1, BT2, BT3, BT4, BT5 are button

Fig. 7 manages the interface circuit schematic diagram of device and Liquid Crystal Module.

Display module PDA160100, its built-in HD66421 driving governor can directly link to each other with the IO mouth of MCU.Processor shows by following control line control Liquid Crystal Module.

CS: chip select line, low level is effective.RD: read to enable mouth, low level is effective.

WR: write and enable mouth, low level is effective.RS: internal register is selected line.

RESET: low level resets.

Claims

1. portable ecg monitor, it is characterized in that it has crosslinking electrode, instrument amplifier, high pass, low pass amplifying circuit, digital regulation resistance, processor, memory module, display module, clock module, keyboard, USB or Modem interface, crosslinking electrode joins with instrument amplifier, high pass, low pass amplifying circuit, processor successively, processor joins with digital regulation resistance, high pass, low pass amplifying circuit successively, and processor joins with memory module, display module, clock module, keyboard, USB or Modem interface respectively again.

2. a kind of portable ecg monitor according to claim 1, it is characterized in that said processor: adopt MSP430F149, instrument amplifier: adopt AD620 or INA128U, high pass, low pass amplifying circuit: adopt LMC6464, digital regulation resistance: adopt MAX5413, memorizer: adopt K9F5608UOB, display module: adopt graphic dot matrix Liquid Crystal Module PDA160100, USB or Modem interface: adopt USB interface chip USBN9603, clock module: clock chip adopts DS1302Z.

3. a kind of portable ecg monitor according to claim 1; it is characterized in that between said processor and the memorizer realizing control to K9F5608UOb by 8 I/O mouth lines and some control lines; control line is respectively: CLE: the command latch enable end; high level is effective; ALE: address latch Enable Pin; high level is effective; CE: chip select line, low level is effective, WE: write and enable mouth; order; address and data are locked at the rising edge of signal; RE: read to enable mouth, data are delivered on the I/O mouth line at the trailing edge of this mouthful, and made the internal column address depositor increase 1; WP: Write-protect notch, low level is effective.When its when low, programming and erase operation are forbidden R/B: the mode of operation index signal.

4. a kind of portable ecg monitor according to claim 1 is characterized in that said processor and the interface of USB are that the data address bus of USB interface chip USBN9603 links to each other with the I/O mouth of processor.Control line is respectively: CS: chip select line, low level is effective, RD: read to enable mouth, low level is effective, WR: write and enable mouth, low level is effective, AO: the address bus pattern is provided with line.

5. a kind of portable ecg monitor according to claim 1, the interface that it is characterized in that said processor and Modem is to realize the RS232 level conversion by MAX3387, constitute the Modem communication interface, link to each other by 4 lines between processor and the Modem, they are respectively: RX: receive line.TX: send line, DCD: data carrier detects, DSR: data terminal ready detects.

6. a kind of portable ecg monitor according to claim 1, the interface that it is characterized in that said processor and clock chip are clock chip DS1302Z, and processor passes through RST, I/O, and three ports of SCLK are programmed to it.

7. a kind of portable ecg monitor according to claim 1, the interface that it is characterized in that said processor and Liquid Crystal Module are to adopt display module PDA160100, its built-in HD66421 driving governor, directly link to each other with the IO mouth of MCU, processor shows CS by following control line control Liquid Crystal Module: chip select line, and low level is effective, RD: read to enable mouth, low level is effective, WR: write and enable mouth, low level is effective, RS: internal register is selected line, and RESET: low level resets.