CN1180513A

CN1180513A - Cardiac function recording transmitter

Info

Publication number: CN1180513A
Application number: CN 96119503
Authority: CN
Inventors: 黄莹; 黄志锐
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-10-23
Filing date: 1996-10-23
Publication date: 1998-05-06

Abstract

A cardic function recorder-sender is composed of electrodes on body surface and circuits which include double-channel signal amplifier, single-chip computer circuit, waveform modulation and sending circuit, power supply and LCD. The outputs of electrodes are connected to said amplifier, whose output is connected to A/D input of single-chip computer. Two outputs of said computer are respectively connected to LDC via control line and parallel data lines and the waveform modulation and sending circuit via serial data line. It can be used to display the cardioelectric waveform directly with easy data transmission.

Description

Cardiac function recording transmitter

The present invention relates to a kind ofly can monitor cardiac function, and can be with the cardiac function recording transmitter that transmits and show about record.

The instrument that present electrocardiographic recording aspect is generally used is basically based on dynamic electro-cardiac monitor, and own vol is bigger on the one hand for this equipment, the equipment cost height; This equipment only can be used for the waveform recording of cardiac function on the other hand, and effect only is confined to analyze in hospital's playback afterwards, does not possess the function that relevant waveform is sent to hospital, lacks the first aid function of dealing with heart attack, is unsuitable for penetration and promotion.The eighties has abroad occurred a kind ofly can ecg wave form being mail to the equipment of emergency center by telephone line, can make the patient outside institute electrocardiosignal be sent to emergency center, thereby solve patient's first aid diagnosis problem outside the institute.Yet these equipment generally adopt analog form to carry out the transmission of signal, and therefore the data that can transmit on the one hand have been subjected to certain restriction; Also be that prior one side is that this kind equipment does not possess the ecg wave form Presentation Function on the other hand, when needing the observational record data, must cooperate equipment such as corresponding electrocardiograph or computer, use inconvenient, be unfavorable in patient and the field first aid process doctor to the grasp of the state of an illness, totally unfavorable to treatment outside patient's the institute.

It is convenient to the purpose of this invention is to provide a kind of transfer of data, the novel cardiac function recording transmitter that can carry out ecg wave form instant playback and transmission.

The object of the present invention is achieved like this: it comprises external electrode, it is characterized in that: its circuit part is made up of two-way signal amplification circuit, single chip circuit, waveform modulated transtation mission circuit, power circuit and five parts of liquid crystal display circuit, and the Liquid Crystal Module in the liquid crystal display circuit adopts the lattice graphics lcd module; Single chip circuit links to each other with two-way signal amplification circuit, power circuit, waveform modulated transtation mission circuit and liquid crystal display circuit respectively, and power circuit links to each other with two-way signal amplification circuit, waveform modulated transtation mission circuit and liquid crystal display circuit.

The electrocardiosignal of human body is recorded by external electrode, amplify through the two-way signal amplification circuit, after its output signal is carried out analyzing and processing by single chip circuit, one the tunnel is transferred to the waveform modulated transtation mission circuit so that by phone or modem relevant electrocardiographic recording is mail to emergency center or hospital, for the usefulness of doctor or expert consultation analysis; The liquid crystal display circuit that has the lattice graphics lcd module is sent on another road, thereby realizes the instant playback of ecg wave form.In the work process of the present invention, the electrocardiographic recording signal at first is converted to analogue signal by the two-way signal amplification circuit, be converted to data signal by single chip circuit then and carry out analyzing and processing, so this machine data processing capacity is powerful; Because liquid crystal display circuit has adopted the lattice graphics lcd module, can carry out instant playback in addition, therefore make things convenient for the in-situ curing of medical personnel widely the cardiac to the ecg wave form of actual measurement.

Below in conjunction with accompanying drawing in detail the present invention is described in detail.

Fig. 1 is a functional-block diagram of the present invention.

Fig. 2 is single chip circuit, power circuit and liquid crystal display circuit figure.

Fig. 3 is two-way signal amplification circuit and waveform modulated transtation mission circuit figure.

As shown in the figure, the electrocardio function recording transmitter that the present invention relates to is made of two-way signal amplification circuit, single chip circuit, waveform modulated transtation mission circuit, power circuit and five parts of liquid crystal display circuit, in order to realize the instant playback to ecg wave form, liquid crystal display circuit adopts the lattice graphics lcd module; Single chip circuit links to each other with two-way signal amplification circuit, power circuit, waveform modulated transtation mission circuit and liquid crystal display circuit respectively, and power circuit links to each other with two-way signal amplification circuit, waveform modulated transtation mission circuit and liquid crystal display circuit.

The two-way signal amplification circuit is made up of A1 (LM324), A2 (LM324) and related peripheral circuit.The electrocardiosignal of human body is input to four inputs of two-way signal amplification circuit via external electrode P, the buffer stage of signal by constituting by A1:A, A1:B, A2:A, A2:B, the differential stage that constitutes via A1:C, A2:C carries out differential amplification, put through the master of A1:D and A2:D formation at last, become the analogue signal that to sample, be input to 47,48 feet of single-chip microcomputer U5.Single chip circuit comprises single-chip microcomputer U5, external memory chip A7 (HM628128) and buffer U6 (74H373), key circuit S1-S8.Single-chip microcomputer U5 adopts 8 single-chip microcomputers 78014, finish sampling by it by the two-way signal amplification circuit, analog electrocardiogram signal after the sampling changes into digital signal, the digital signal of gained both can be stored in the internal memory of single-chip microcomputer U5 (78014) as required, also can be stored among the memory A7 of its place portion (HM628128).Single chip circuit under adjective control, is finished the judgement of institute's thought-read electrical waveform and the analysis of all kinds of relevant parameters when having finished processing to sampled signal, storage.Serial communication circuit in the single-chip microcomputer U5 (78014) is by the output of 63 feet, relevant data can be issued the waveform modulated circuit on request on the one hand, the waveform modulated circuit is by FSK modulation chip U7 (73M223) and related peripheral circuit and loudspeaker SP formation, 12 feet of modulation chip U7 (73M223) (this modulation chip also can adopt TCM3105) receive the data from 63 feet of single-chip microcomputer U5, and modulate by it, the modulation back is by the output of 16 feet, through 2 feet of capacitance-resistance coupling platform to U1 (LM386), amplify by it, 5 feet output through U1 (LM386), convert acoustical signal by capacitor C 15 coupling platforms to loudspeaker SP, finally by telephone network data are sent to the receiving equipment of distant place emergency center by the microphone of phone; Single-chip microcomputer U5 (78014) also can utilize its inner serial communication circuit by 63 feet signal directly to be sent to computer equipment or the high speed modem that is linked to each other by cable nearby on the other hand, sends thereby make relevant information carry out data with higher speed.

Liquid crystal display circuit is made of lattice graphics lcd module U9 (0861) and related peripheral circuit, it is one 128 * 32 a graphic lcd module, its data-interface 20-27 foot links to each other with the 10-17 foot of single-chip microcomputer U5 (78014) by eight parallel-by-bit data wires, 17 feet of Liquid Crystal Module U9 (0861) link to each other with 32 feet of single-chip microcomputer U5 (78014), 18 feet link to each other with 31 feet of single-chip microcomputer U5 (78014), be used for controlling the read-write of Liquid Crystal Module U9 (0861), the address wire of Liquid Crystal Module U9 (0861) 16 foot links to each other with 2 feet of buffer U6, when address wire was low level, single-chip microcomputer U3 (78014) can be by the command register of eight bit data line read-write Liquid Crystal Module U9 (0861); When address wire when being high, read-write its data register, thereby relevant graphic character is presented on the Liquid Crystal Module U9 (0861).

Single-chip microcomputer U5 (78014) can respond the operation requests that the user is proposed by key circuit S1-S8, the contents such as Wave data of being stored are sent to Liquid Crystal Module U9 (0861) by its eight bit data line 10-17, show original waveform thereon, and can show character reminding information that some are relevant etc.

Claims

1. cardiac function recording transmitter, it comprises external electrode and circuit part, circuit part is by the two-way signal amplification circuit, single chip circuit, the waveform modulated transtation mission circuit, five parts of power circuit and liquid crystal display circuit are formed, it is characterized in that: the output of external electrode links to each other with the two-way signal amplification circuit, the outfan of two-way signal amplification circuit links to each other with the A/D input of single chip circuit, the output of single chip circuit is leaded up to control line and is linked to each other with liquid crystal display circuit with parallel data line, and another road links to each other by the signal input part of serial data line with the waveform modulated transtation mission circuit: power circuit respectively with the two-way signal amplification circuit, single chip circuit, liquid crystal display circuit links to each other with the waveform modulated transtation mission circuit.

2. cardiac function recording transmitter as claimed in claim 1 is characterized in that: liquid crystal display circuit adopts the lattice graphics lcd module, and its model is 0861, and it is one 128 * 32 a graphic lcd module.

3. cardiac function recording transmitter as claimed in claim 1 or 2, it is characterized in that: the data-interface of lattice graphics lcd module (0861) links to each other with single-chip microcomputer by eight parallel-by-bit data wires, its read-write line directly links to each other with single-chip microcomputer, and its address wire links to each other with single-chip microcomputer by buffer.

4. cardiac function recording transmitter as claimed in claim 1 is characterized in that: the waveform modulated transtation mission circuit is by FSK modulation chip (73M223) and related peripheral circuit and loudspeaker SP formation.

5. cardiac function recording transmitter as claimed in claim 1 is characterized in that: the modulation chip in the waveform modulated transtation mission circuit also can adopt TCM3105.

6. cardiac function recording transmitter as claimed in claim 1 is characterized in that: the single-chip microcomputer model of single chip circuit is 78014.