CN205411175U - Signal generator of dull and stereotyped calibration of medical motion is exclusively used in - Google Patents
Signal generator of dull and stereotyped calibration of medical motion is exclusively used in Download PDFInfo
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- CN205411175U CN205411175U CN201521026168.6U CN201521026168U CN205411175U CN 205411175 U CN205411175 U CN 205411175U CN 201521026168 U CN201521026168 U CN 201521026168U CN 205411175 U CN205411175 U CN 205411175U
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Abstract
The utility model discloses a signal generator of dull and stereotyped calibration of medical motion is exclusively used in. The utility model discloses a power module, DA send out the mode piece, mode piece, waveform output interface module are sent out to the chip. Power module supplies power and sends out the mode piece for a DA mode piece and chip, and the standard heart rate signal that a DA mode piece sent, sine wave and the square wave that a chip mode piece sent pass through waveform output interface module output. And simultaneously, the utility model discloses according to required wave form and the index of medical motion flat board calibration, the reverse engineer goes out the input digit volume of the digital analog conversion chip among the amplitude adjusting module, the decay multiple, and the appearance of 11 way electric capacity among the frequency adjusting module is worth. The utility model discloses be exclusively used in the calibration of the dull and stereotyped electrocardio parameter of medical motion, have advantages such as output waveform stabilization, calibration convenience.
Description
Technical field
This utility model relates to a kind of medical signal generator, a kind of signal generator being exclusively used in the calibration of medical exercise stress.
Background technology
Along with growth in the living standard, the quickening of rhythm of life and the deficiency of sports time, coronary heart disease has become as the principal disease that current threat our people is healthy.Under normal circumstances, coronary heart disease has disguised strong feature, even if the maximum reserve capabillity of many its coronary artery expansions of patient has been decreased obviously, but during tranquillization, coronary artery blood flow still can remain normal, and without myocardial ischemia phenomenon, and static electrocardiogram shows normally.Patient is at premorbid also non-evident sympton, and the most out in the cold, once morbidity is easy for forming myocardial infarction, causes sudden death.Therefore, improve the accuracy rate to early coronary disease patient diagnosis, be the key of prevention coronary heart disease burst.
Medical exercise stress is made up of computer and the exercise stress (medical treadmill) of band ecg analysis system, and it is by observation people's electrocardiogram in the case of aerobatic exercise, diagnoses a kind of armarium whether suffering from coronary heart disease.
The calibrating standard will implemented according to country, when calibrating the ecg analysis system of medical exercise stress, needs the signal generator that waveforms amplitude is little, frequency is low, precision is high, stability is high.Existing Frequency Of Signal Generator is high, waveforms amplitude is big, precision is low, is not suitable for the calibration of medical exercise stress EGC parameter.Existing medical signal generator can not export the waveform of characteristic frequency and amplitude easily, and stability it is difficult to ensure that, this kind of medical signal generator is used for the maintenance of armarium, debugs and detection etc., therefore, there is presently no the signal generator being exclusively used in the calibration of medical exercise stress.
On technology realizes, existing medical signal generator mostly is that analog circuit sends out ripple, chip sends out ripple and packet sends out ripple, and analog circuit is sent out waveform and changed dumb, precision and stability it is difficult to ensure that；And chip is sent out ripple and cannot be sent calibration heart rate signal；Packet is sent out wave energy and is enough sent standardized heart rate signal, but the requirement to Wave data metric density is high, and frequency adjustment is the most difficult.
Summary of the invention
For the deficiency of background technology, the purpose of this utility model is to provide a kind of signal generator being exclusively used in the calibration of medical exercise stress that can solve the problem that foregoing problems.
It is exclusively used in the signal generator of medical exercise stress calibration, including power module, DA sends out mode block, chip sends out mode block, waveform output interface module, described power module supplies electricity to DA and sends out mode block and chip sends out mode block, and DA sends out standardized heart rate signal that mode block sends, chip sends out sine wave that mode block sends and square wave is exported by waveform output interface module.
Described power module includes power supply, power regulator module, power filtering module, and power supply passes through power regulator module and power filtering module, exports stable 12V voltage；DA sends out mode block and includes power transfer module, host computer, single-chip microcomputer, DAC, wave filter, the data of the standardized heart rate signal that standardized heart rate signal function is produced by host computer store in the inside FLASH of single-chip microcomputer, generate standardized heart rate signal by DAC, and pass through filter filtering；Chip sends out sine wave and square wave that the waveform generation chip in mode block sends by amplitude adjustment module, frequency adjustment module, the first attenuator and the second attenuator, the first voltage follower and the second voltage follower, obtains the waveform of setpoint frequency and amplitude；Waveform output interface module includes range handover module, relay group and interface module of leading, and waveform is converted to 10 waveforms corresponding to interface by range handover module, and controls break-make by relay group, and output is to interface module of leading.
The beneficial effects of the utility model:
This utility model is exclusively used in the calibration of medical exercise stress EGC parameter, facilitates the calibration of medical exercise stress EGC parameter.
Packet is sent out ripple and is sent out ripple with chip and combine by this utility model, improves the performance of system, circuit is carried out reversal design simultaneously, improves characteristic frequency and the stability of amplitude waveform output.
Accompanying drawing explanation
Fig. 1 is simple block diagram of the present utility model；
Fig. 2 is detailed diagram of the present utility model；
Fig. 3 is of the present utility model ripple chip module circuit diagram；
Fig. 4 is amplitude adjustment module circuit diagram of the present utility model；
Fig. 5 a is a part of circuit diagram of frequency adjustment module of the present utility model；
Fig. 5 b is frequency adjustment module another part circuit diagram of the present utility model；
Fig. 6 is double operational chip module circuit diagram of the present utility model；
1. power module in figure, 2.DA sends out mode block, and 3. chip sends out mode block, 4. waveform output interface module.
Detailed description of the invention
The simple block diagram of the signal generator being exclusively used in the calibration of medical exercise stress as shown in Figure 1, including power module 1, DA sends out mode block 2, chip sends out mode block 3, waveform output interface module 4.Described power module 1 supplies electricity to DA and sends out mode block 2 and chip sends out mode block 3, and DA sends out standardized heart rate signal that mode block 2 sends, chip sends out sine wave that mode block 3 sends and square wave is exported by waveform output interface module 4.
The detailed diagram of the signal generator being exclusively used in the calibration of medical exercise stress as shown in Figure 2, described power module 1 includes power supply, power regulator module, power filtering module, power supply passes through power regulator module and power filtering module, exports stable 12V voltage；DA sends out mode block 2 and includes power transfer module, host computer, single-chip microcomputer, DAC, wave filter, the data of the standardized heart rate signal that standardized heart rate signal function is produced by host computer store in the inside FLASH of single-chip microcomputer, generate standardized heart rate signal by DAC, and pass through filter filtering；Chip sends out sine wave and square wave that the waveform generation chip in mode block 3 sends by amplitude adjustment module, frequency adjustment module, attenuator, voltage follower, obtains the waveform of characteristic frequency and amplitude；Waveform output interface module 4 includes range handover module, relay group and interface module of leading, waveform is converted to the waveform corresponding to 10 interfaces of C1～C6, RL, LL, LA, RA by range handover module, and controlling break-make by relay group, output is to interface module of leading.
A ripple chip module circuit diagram as shown in Figure 3, it is ICL8038 that described chip sends out the model of the waveform generation chip U2 in mode block 3, and waveform generation chip U2 supply voltage is+12V, output square wave (SQU) and sinusoidal wave (SIN)；Waveform generation chip U2 outward element includes five resistance, two slide rheostats, three electric capacity, 6 feet of waveform generation chip U2 connect+12V power supply, the 11 foot ground connection of waveform generation chip U2,1 foot of waveform generation chip U2 meets the first slide rheostat R6,12 feet of waveform generation chip U2 meet the second slide rheostat R10, and 9 feet of waveform generation chip U2 and 2 feet export square wave (SQU) and sinusoidal wave (SIN) respectively.
Amplitude adjustment module circuit diagram as shown in Figure 4, described amplitude adjustment module includes analog-digital chip U1, one resistance and an electric capacity, the model of analog-digital chip U1 is TLV5616, single-chip microcomputer model is MSP430F149, 1 foot of analog-digital chip U1 and 2 feet connect the serial ports of single-chip microcomputer, 3 feet of analog-digital chip U1 and 4 feet meet P3.0 and P3.1 of single-chip microcomputer respectively, 6 feet and 8 feet of analog-digital chip U1 connect+5V power supply, 7 feet of analog-digital chip U1 are connected the first resistance R7 output voltage, 8 feet of welding wave generation chip U2, for regulating the amplitude of waveform.
nullFrequency adjustment module circuit diagram as shown in figure 5 a and 5b，Described frequency adjustment module includes two panels analog multichannel switch chip and 15 electric capacity，The model of analog multichannel switch chip is AD7501，14 feet of two panels analog multichannel switch chip U5 and U6 connect+12V power supply，15 feet of two panels analog multichannel switch chip U5 and U6 and 2 foot ground connection，10 feet of the 12 foot welding wave generation chip U2 of two panels analog multichannel switch chip U5 and U6，16 feet of the first analog multichannel switch chip U5、1 foot、4 feet and 3 feet respectively with the P2.0 of single-chip microcomputer、P2.1、P2.2、P2.3 is connected，16 feet of the second analog multichannel switch chip U6、1 foot and 3 feet respectively with the P2.4 of single-chip microcomputer、P2.5、P2.6 is connected，5 feet of the first analog multichannel switch chip U5、6 feet、7 feet、8 feet、9 feet、10 feet、11 feet、13 feet one end with eight electric capacity respectively is connected，The other end ground connection of eight electric capacity，10 feet of the second analog multichannel switch chip U6、11 feet、13 feet one end with three electric capacity respectively is connected，The other end ground connection of three electric capacity.
nullDouble operational chip module circuit diagram as shown in Figure 6，Described attenuator 1、Attenuator 2、Voltage follower 1、Voltage follower 2 is realized by double operational chip，The model of double operational chip is OPA1612，Supply voltage is+12V，Double operational chip comprises two operational amplifier U3 and U4，The anode of the first operational amplifier U3 the second resistance R14 in parallel and the first electric capacity C7 ground connection，One end of 3rd resistance R1 is connected with the outfan of the first operational amplifier U3，Another negative terminal terminating the first operational amplifier U3 and one end of the 4th resistance R2 of 3rd resistance R1，Another termination the 3rd slide rheostat R3 of the 4th resistance R2，First low pass filter of output termination the 5th resistance R13 and the second electric capacity C5 composition of the first operational amplifier U3，The other end of the first low pass filter is connected with 1 foot of connector J1；Second operational amplifier U4 just terminates the 6th resistance R16 and one end of the 7th resistance R18, another termination the 4th slide rheostat R15 of the 6th resistance R16, the other end ground connection of the 7th resistance R18, the negative terminal of the second operational amplifier U4 connects the second operational amplifier U4 outfan, second low pass filter of the second operational amplifier U4 output termination the 8th resistance R17 and the 3rd electric capacity C12 composition, the other end of the second low pass filter is connected with 2 feet of connector J1.
Table 1 is the required waveform of medical exercise stress calibration and index
10 feet of described waveform generation chip U2 connect electric capacity to control the frequency of output waveform, from table it can be seen that, square wave and sinusoidal wave Frequency point needed for the calibration of medical exercise stress are 0.1Hz, 0.5Hz, 1Hz, 2.5Hz, 10Hz, 20Hz, 40Hz, 60Hz, 80Hz, 100Hz, 150Hz, consulting the technical manual of waveform generation chip U2, waveform frequency computing formula is as follows:
In formula, R takes 10K Ω, calculates 11 values of C, is controlled the break-make of 11 electric capacity by 11 switches of two panels analog multichannel switch chip；A0, A1, A2 pin of single-chip microcomputer and the first analog multichannel switch chip U5 is connected, and chip internal, with decoder, controls the break-make of 8 way switch, and A0, A1 pin of single-chip microcomputer and the second analog multichannel switch chip U6 is connected, and controls 3 way switch break-makes therein.9 feet and 2 feet of described waveform generation chip U2 export square wave and sine wave respectively, by amplitude V1 and the sinusoidal wave peak-to-peak value V2 of high accuracy oscilloscope measurement output square wave, can view from table, square wave amplitude needed for the calibration of medical exercise stress is 1mV, sinusoidal wave peak-to-peak value is 25 μ V, 1mV, 2mV, by V1 divided by 1mV, determines the attenuation multiple of attenuator 1, V2 is respectively divided by 25 μ V, 1mV and 2mV, determines the attenuation multiple of attenuator 2.8 feet of described waveform generation chip U2 control the amplitude of output waveform by inputting different voltage, build complete circuit, the 8 external D.C. regulated power supplies of foot of waveform generation chip U2；Square wave amplitude needed for the calibration of medical exercise stress is 1mV, regulation D.C. regulated power supply, measure the voltage of 2 feet of connector J1, stable when 1mV, the magnitude of voltage V3 of record D.C. regulated power supply, the voltage of 8 feet of waveform generation chip U2 is provided by 12 analog-digital chip TLV5616, calculates the digital quantity D1 of correspondence according to analog quantity V3；Sinusoidal wave peak-to-peak value needed for the calibration of medical exercise stress is 25 μ V, 1mV, 2mV, regulation D.C. regulated power supply, by the sinusoidal wave peak-to-peak value of 1 foot of high accuracy oscilloscope measurement connector J1, when record peak-to-peak value is 25 μ V, 1mV, 2mV respectively, magnitude of voltage V4, V5, V6 of D.C. regulated power supply, calculates digital quantity D2, D3, D4 of correspondence according to analog quantity V4, V5, V6；In Single Chip Microcomputer (SCM) program, embed digital quantity D1, D2, D3, D4, controlled the voltage of 8 feet of waveform generation chip U2 by single-chip microcomputer, control the amplitude of waveform output with this.
When the EGC parameter of medical exercise stress is calibrated, the conducting wire of medical exercise stress is received the interface that leads of the present utility model, by calibrating standard requirement, send the waveform of amplitude and specific and frequency according to waveform and index request one by one, the parameter of medical exercise stress is calibrated one by one.During, single-chip microcomputer, by exporting different digital quantities, controls the voltage that the output of amplitude adjustment module is different, to be set output waveform amplitude；Single-chip microcomputer is passed through by switching frequency adjustment module difference analog switch, selects different electric capacity to receive waveform generation chip, to be set output waveform frequency.
To sum up, packet is sent out ripple and chip is sent out ripple combines by this utility model, and standardized heart rate signal is sent by packet, while guaranteeing to send standardized heart rate signal, sine wave and square wave are sent by chip, reduces the task amount of single-chip microcomputer, improve the performance of system.
This utility model calibrates frequency and the amplitude of required waveform according to medical exercise stress EGC parameter, inversely signal generator is carried out circuit design, including the mensuration of digital quantity in amplitude adjustment module and calculating, the calculating of electric capacity in frequency adjustment module, ensure that the stable output of amplitude and specific and frequency waveform, it is possible to be conveniently dedicated to the calibration of Medical flat EGC parameter.
This utility model establishes transmission of quantity value and the traceability system of medical exercise stress electrocardio partial parameters, medical exercise stress EGC parameter is traced to the source to national measurement benchmark, gauge check personnel are made to facilitate the calibration of medical exercise stress EGC parameter, ensure that the accuracy of parameter, the potential personnel of coronary heart disease can the most correctly be found, it is to avoid mistaken diagnosis, fail to pinpoint a disease in diagnosis the generation of situation.
The above; it it is only preferred embodiment of the present utility model; not this utility model is imposed any restrictions; every any simple modification, change and equivalent structure change made above example according to this utility model technical spirit, all still falls within the protection domain of technical solutions of the utility model.
Claims (1)
1. the signal generator being exclusively used in the calibration of medical exercise stress, including power module (1), DA sends out mode block (2), chip sends out mode block (3), waveform output interface module (4), it is characterized in that: described power module (1) supplies electricity to DA and sends out mode block (2) and chip sends out mode block (3), DA sends out standardized heart rate signal that mode block (2) sends, chip sends out sine wave that mode block (3) sends and square wave is exported by waveform output interface module (4)；
Described power module (1) includes power supply, power regulator module, power filtering module, and power supply passes through power regulator module and power filtering module, exports stable 12V voltage；DA sends out mode block (2) and includes power transfer module, host computer, single-chip microcomputer, DAC, wave filter, the data of the standardized heart rate signal that standardized heart rate signal function is produced by host computer store in the inside FLASH of single-chip microcomputer, generate standardized heart rate signal by DAC, and pass through filter filtering；Chip sends out sine wave and square wave that the waveform generation chip in mode block (3) sends by amplitude adjustment module, frequency adjustment module, the first attenuator and the second attenuator, the first voltage follower and the second voltage follower, obtains the waveform of setpoint frequency and amplitude；Waveform output interface module (4) includes range handover module, relay group and interface module of leading, and waveform is converted to 10 waveforms corresponding to interface by range handover module, and controls break-make by relay group, and output is to interface module of leading.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521026168.6U CN205411175U (en) | 2015-12-12 | 2015-12-12 | Signal generator of dull and stereotyped calibration of medical motion is exclusively used in |
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| CN201521026168.6U CN205411175U (en) | 2015-12-12 | 2015-12-12 | Signal generator of dull and stereotyped calibration of medical motion is exclusively used in |
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| CN205411175U true CN205411175U (en) | 2016-08-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109101072A (en) * | 2018-10-25 | 2018-12-28 | 京信通信系统（中国）有限公司 | A kind of square wave signal generator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109101072A (en) * | 2018-10-25 | 2018-12-28 | 京信通信系统（中国）有限公司 | A kind of square wave signal generator |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160803 Termination date: 20181212 |