Electrocardiogram monitor system based on bluetooth cellular phone
Technical field
This utility model relates to the portable cardiac monitor system, particularly based on the electrocardiogram monitor system of bluetooth cellular phone.
Background technology
Along with people's rhythm of life and aged tendency of population degree are constantly accelerated, the sickness rate of cardiovascular disease is in rising trend.The most traditional electrocardiogram monitor only is applied in the ward monitoring to the severe case, and the electrocardiogram (ECG) data of its collection etc. need limit range of activity by the Wireline transmission, are not suitable for carrying out remote monitor.
Be accompanied by wireless communication technique and development of internet technology, in order to prevent the generation of patient's randomness and paroxysmal cardiovascular disease remotely, in time and effectively, the portable cardiac monitor system is arisen at the historic moment, and is used widely gradually.
Chinese patent discloses a kind of round-the-clock electrocardio prior-warning device for No. 02271468.5, by formations such as pick off (gathering vital signs numbers such as electrocardio), analog to digital conversion circuit, digital signal processor, communication interface (bluetooth and RS232 interface), display and bins.Though above-mentioned prior art has solved patient's electrocardiogram (ECG) data is uploaded to the problem of hospital's monitoring network, the purpose of realization real-time remote monitoring.But prior art still has weak point, and wherein the stability of the degree of accuracy of electrocardio-data collection, reliability of data transmission and whole system work is related to by the life security of monitoring patients, so still be necessary above-mentioned aspect is done further to improve.
The utility model content
The purpose of this utility model provides the electrocardiogram monitor system based on bluetooth cellular phone that the data acquisition degree of accuracy is higher, the transmission interference free performance is better and work is more stable.
Above-mentioned purpose realizes by following technical scheme:
A kind of electrocardiogram monitor system based on bluetooth cellular phone comprises monitor and bluetooth cellular phone, and monitor comprises main controller module and the ecg signal acquiring module, the blue tooth radio network link block that are electrically connected with it; Wherein, described electrocardiogram acquisition module adopts the parallel connection type difference amplifier at the electrocardiogram acquisition front end, and secondary amplifies the general amplifier of employing, converts differential signal to single-ended signal output.
The utlity model has following advantage and effect: the electrocardiogram acquisition module adopts the parallel connection type difference amplifier at the ecg signal acquiring front end, secondary amplifies the general amplifier of employing, convert differential signal to single-ended signal output, can reduce greatly as interference such as power frequency 50Hz and polarizing voltages, improve the data acquisition degree of accuracy; The signal of gathering is sent to mobile phone by blue-tooth technology, has very high capacity of resisting disturbance and multiple spot access capability, the feasible characteristics that the utlity model has low cost, high reliability; Mobile phone itself can be handled the data that receive, and comprises functions such as electrocardiogram (ECG) data mass memory, analysis, waveform demonstration and warning, and can realize telecommunication, realizes the patient is guarded whenever and wherever possible; Described in addition power management module adopts the DC-DC voltage stabilizing chip SP6648 that boosts, and is responsible for constant voltage power supply and low-voltage warning to electrocardiogram equipment, has the input service voltage of extremely low quiescent current and broad, has further improved the stability of system works.
Description of drawings
Fig. 1 is an entire block diagram of the present utility model;
Fig. 2 is the composition frame chart of electrocardiogram equipment in this utility model;
Fig. 3 is the circuit diagram of power management module in the electrocardiogram equipment;
Fig. 4 is the circuit diagram of ecg signal acquiring module in the electrocardiogram equipment;
Fig. 5 is the circuit diagram of main controller module in the electrocardiogram equipment;
Fig. 6 is the circuit diagram of blue tooth radio network link block in the electrocardiogram equipment.
The specific embodiment
As shown in Figure 1, the electrocardiogram monitor system based on bluetooth cellular phone comprises portable electrocardiograph and bluetooth cellular phone.In the present embodiment, bluetooth cellular phone adopts the N72 of Nokia type (can certainly be other intelligent type with Bluetooth function), mobile phone has the Bluetooth communication port, inner integrated operating system and electrocardiosignal diagnostic analysis display application software can be finished functions such as electrocardiogram (ECG) data mass memory, analysis, waveform demonstration and warning.
As shown in Figure 2, electrocardiogram equipment comprises power management module, ecg signal acquiring module, main controller module and blue tooth radio network link block, the function and the specific implementation of each module of detailed description below.
In conjunction with shown in Figure 3, described power management module adopts the DC-DC voltage stabilizing chip SP6648 that boosts, and is responsible for constant voltage power supply and low-voltage warning to the whole hardware circuit of electrocardiogram equipment.SP6648 is a SIPEX company product, has the quiescent current of extremely low 12uA, and the wide input service voltage of 0.7~4.5V is exported to 3.3V from two batteries, and efficient can reach 96%, and programmable battery low-voltage detects.
In conjunction with shown in Figure 4, the ecg signal acquiring module is responsible for the picking up of human ecg signal carried out filtering and inhibition to interfering signals such as high frequency, power frequencies, and the faint electrocardiosignal of gathering is amplified.Because human ecg signal is very faint, in detection signal, there is very big interference, as interference such as power frequency 50Hz and polarizing voltages.Therefore, the ecg signal acquiring module adopts discrete device to build, and prime adopts the parallel connection type difference amplifier, and secondary amplifies the common general amplifier of employing, converts differential signal to single-ended signal output.The prime of ecg signal acquiring module is amplified employing a slice INA321 as the one-level difference amplifier in the present embodiment, and secondary amplifies the general amplifier OPA336 of employing and carries out the secondary amplification.
In conjunction with shown in Figure 5, main controller module adopts the MSP430FG439 chip of TI company, and the MSP430FG439 chip is 16 bit processors with extremely low power dissipation, realization is to the A/D analog digital conversion of electrocardiosignal, digital filtering, the work of other several modules is controlled and is managed in the data computation analysis simultaneously.
In conjunction with shown in Figure 6, the blue tooth radio network link block adopts the BLUECORE3-EXTERNAL chip of CSR company, be connected the piconet of realizing in the Bluetooth technology with the bluetooth wireless port on the bluetooth cellular phone, blue tooth wireless technology has not only been avoided the cable connection, the wide region standard device that comprises network and the inlet of communications option also are provided, thereby have realized the wireless transmission and the blue tooth radio network service of electrocardiogram (ECG) data.Bluetooth technology has good in anti-interference performance and the little advantage of emitted power, has guaranteed portable requirement.Adopt UART interface Data transmission between main controller module and the blue tooth radio network link block.
The electrocardiogram monitor system operation principle based on bluetooth cellular phone that this utility model provides is as follows:
The ecg signal acquiring module receives the electrocardiosignal of being gathered the human heart bioelectrical activity by ECG (abbreviation of electrocardiogram electrocardiogram) crosslinking electrode, and faint electrocardiosignal is amplified processing such as filtering; Send into main controller module afterwards; Main controller module is responsible for electrocardiosignal is carried out the A/D conversion, and analog signal conversion is become digital signal, and data are carried out analyzing and processing, and the data packing is sent to the blue tooth radio network link block, and detects cell voltage, provides low-voltage to report to the police; Bluetooth port on blue tooth radio network link block and the bluetooth cellular phone network that connects, electrocardiosignal is transferred to bluetooth cellular phone by blueteeth network; Bluetooth cellular phone is carried out electrocardiogram (ECG) data mass memory, analysis, waveform demonstration and warning function; Bluetooth cellular phone and then can communicate by letter with the monitoring center by the mobile phone wireless network.
Powerful wireless blue tooth communication function and data-handling capacity that the utility model utilizes mobile phone to have will Portable electrocardiograph and smart mobile phone function combine, and have formed the cardiac monitoring system based on bluetooth cellular phone System. The utility model makes up flexibly, and networking is convenient, and the expansion interaction capabilities is good, be applicable to hospital monitor and from Institute's monitoring improves the data acquisition accuracy simultaneously, has the advantage of low cost, high reliability.