CN202998024U - Portable high-precision multi-purpose medical sinusoidal signal generator - Google Patents
Portable high-precision multi-purpose medical sinusoidal signal generator Download PDFInfo
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- CN202998024U CN202998024U CN 201220722913 CN201220722913U CN202998024U CN 202998024 U CN202998024 U CN 202998024U CN 201220722913 CN201220722913 CN 201220722913 CN 201220722913 U CN201220722913 U CN 201220722913U CN 202998024 U CN202998024 U CN 202998024U
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Abstract
The utility model relates to a signal generator, and particularly relates to a portable high-precision multi-purpose medical sinusoidal signal generator which comprises a singlechip control unit and a power amplification unit, a signal output interface, a precise peak detection unit, a signal processing unit, a touch LCD (liquid crystal display) unit and a power supply unit, wherein the signal output interface and the precise peak detection unit are connected with an output end of the power amplification unit, and the signal processing unit is connected with an output end of the precise peak detection unit. The portable high-precision multi-purpose medical sinusoidal signal generator is characterized by further comprising a numerical control dual-channel signal generating unit and a signal amplitude regulating unit, wherein input and output ports of the numerical control dual-channel signal generating unit and the signal amplitude regulating unit are correspondingly connected with input and output ports of the singlechip control unit, an output end of the numerical control dual-channel signal generating unit is connected with an input end of the signal amplitude regulating unit, and an output end of the signal amplitude regulating unit is connected with an input end of the power amplification unit. The portable high-precision multi-purpose medical sinusoidal signal generator has the advantages of simple structure, small size, low power consumption, stable performance, simple and convenient use, good stability and convenient carrying.
Description
Technical field
The utility model relates to a kind of signal generator, especially a kind of portable high-accuracy multipurpose medical sinusoidal signal generator.
Background technology
In clinical, medical research and experiment, need to detect physiological signal, measure and analyze; In research, maintenance or the debugging of Medical Devices and other medical equipment, often need standard or the abnormal physiological signals such as input analog electrocardiogram, brain electricity; Medically, in the research and teaching to people's ear frequency characteristic and human body impedance characteristic, need high freuqency accuracy, high driving ability, highly purified sinusoidal signal, this much has signal generator now and can't meet the demands at all; In the relevant teaching such as physics of each large universities and colleges; often can demonstrate or test the synthetic waveform under two simple harmonic vibration different situations; this is for the student who studies medicine; the spectrum analysis of understanding physiological signal has and important meaning; common as beat frequency, lissajous figures etc., existing pertinent instruments demonstration or experiment are got up extremely inconvenient, especially the student to do experiment be more difficult; debugging can spend a lot of time, even basic the accent not out.At present, for the debugging that is widely used in scientific research, experimental teaching and medical instrument and maintenance etc., especially the people's ear characteristic in medical science and human body impedance feature measurement, research, the research of the electric biological effect of various cells and tissue, the demonstration that two simple harmonic vibrations are synthetic, a lot of medical signals generators or signal generator only produce common physiological signal, and its waveform is generally fixed, and there is no signal such as sinusoidal signal commonly used, and the output driving force is very limited.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of portable high-accuracy multipurpose medical sinusoidal signal generator is provided, and it is simple in structure, and volume is little, low-power consumption, and stable performance, easy to use, good stability is easy to carry.
the utility model has adopted following technical scheme: a kind of portable high-accuracy multipurpose medical sinusoidal signal generator, comprise the Single-chip Controlling unit, power amplification unit, the signal output interface that is connected with the output of power amplification unit and accurate peak detection unit, the signal processing unit that is connected with accurate peak detection unit output, touch LCD liquid crystal display and power supply unit, it is characterized in that also being provided with numerical control two pass signal generation unit, the signal amplitude regulon, described numerical control two pass signal generation unit, the input/output port of signal amplitude regulon respectively with the corresponding connection of input/output port of Single-chip Controlling unit, the output of numerical control two pass signal generation unit is connected with the input of signal amplitude regulon, the output of signal amplitude regulon is connected with the input of power amplification unit.
Aforementioned Single-chip Controlling unit comprises single-chip microcomputer, signal output interface and corresponding peripheral component, and input/output port P1, the P2 of described single-chip microcomputer, P3 mouth are connected with the input/output port of touch LCD liquid crystal display respectively; The input/output port P1 of single-chip microcomputer, P4 mouth are connected with the input/output port of numerical control two pass signal generation unit respectively: the input/output port P5 mouth of single-chip microcomputer is connected with the input/output port of signal amplitude regulon respectively; The input/output port P6 mouth of single-chip microcomputer is connected with the input/output port of the output port of signal processing unit and accurate peak detection unit respectively.
Aforementioned numerical control two pass signal generation unit comprises two numerical control high-precision sine wave generator chips, 12MHz crystal oscillator and peripheral cells, the input/output port of two numerical control high-precision sine wave generator chips respectively with the Single-chip Controlling unit in the corresponding connection of input/output port P1, P4 mouth of single-chip microcomputer; The output of two numerical control high-precision sine wave generator chips is connected with the input of two programmable gain amplifiers in aforementioned signal amplitude regulon respectively.
Aforesaid signal amplitude regulon comprises two programmable gain amplifiers and peripheral cell, the input/output port of two programmable gain amplifiers respectively with the Single-chip Controlling unit in the corresponding connection of input/output port P5 mouth of single-chip microcomputer; The input of two programmable gain amplifiers is connected with the output of two numerical control high-precision sine wave generator chips in aforementioned numerical control two pass signal generation unit respectively, and the output of two programmable gain amplifiers is connected with the input of power amplification unit respectively.
The portable high-accuracy multipurpose medical sinusoidal signal generator that provides by the utility model, adopt Single-chip Controlling, touch-screen shows that to have volume little, easy to use and good stability, adopt two numerical control high-precision sine wave generator chips, can export simultaneously twice numerical-control high-frequency rate and the position sinusoidal signal of precision mutually, have the maximum output current of 500mA, can be used for impedance operator measures, studies the research of the electric biological effect of various cells and tissue.The utlity model has simple in structurely, volume is little, low-power consumption, stable performance, easy to use, good stability is easy to carry, can be widely used in people's ear characteristic in experiment, teaching and scientific research, the especially medical science of institution of higher learning and the measurement of human body impedance characteristic, the demonstration that two simple harmonic vibrations are synthetic.
Description of drawings
The utility model said structure can further illustrate by the indefiniteness embodiment that accompanying drawing provides.
Fig. 1 is circuit block diagram of the present utility model;
Fig. 2 is the circuit diagram of Single-chip Controlling unit in the utility model;
Fig. 3 is the circuit diagram of numerical control two pass signal generation unit in the utility model;
Fig. 4 is the circuit diagram of signal amplitude regulon in the utility model.
Embodiment
Embodiment of the present utility model is described with reference to the accompanying drawings.in the embodiment depicted in fig. 1, a kind of portable high-accuracy multipurpose medical sinusoidal signal generator, comprise the Single-chip Controlling unit, power amplification unit, the signal output interface that is connected with the output of power amplification unit and accurate peak detection unit, the signal processing unit that is connected with accurate peak detection unit output, touch LCD liquid crystal display and power supply unit, it is characterized in that also being provided with numerical control two pass signal generation unit, the signal amplitude regulon, described numerical control two pass signal generation unit, the input/output port of signal amplitude regulon respectively with the corresponding connection of input/output port of Single-chip Controlling unit, the output of numerical control two pass signal generation unit is connected with the input of signal amplitude regulon, the output of signal amplitude regulon is connected with the input of power amplification unit.
Power amplification unit comprises amplifier LT6300 chip and peripheral components; Signal output interface adopts signal plug; Accurate width peak detection unit comprises the peripheral components such as amplifier LT1361, multichannel programmable gain amplifier PGA117 and diode; Signal processing unit comprises amplifier AD8628, reaches peripheral components; Touch LCD liquid crystal display comprises LCDs FM19264, electric resistance touch screen; Power supply unit adopts voltage stabilizing chip LM1117-5.0, voltage stabilizing chip LM1117-3.3, voltage stabilizing chip LM1117-ADJ, MC34063, LM7805, LM7905 to provide working power to each unit.
In embodiment shown in Figure 2, aforementioned Single-chip Controlling unit comprises single-chip microcomputer U1, signal output interface JK1 and corresponding peripheral component, and input/output port P1, the P2 of described single-chip microcomputer U1, P3 mouth are connected with the input/output port of touch LCD liquid crystal display respectively; The input/output port P1 of single-chip microcomputer U1, P4 mouth are connected with the input/output port of numerical control two pass signal generation unit respectively: the input/output port P5 mouth of single-chip microcomputer U1 is connected with the input/output port of signal amplitude regulon respectively; The input/output port P6 mouth of single-chip microcomputer U1 is connected with the input/output port of the output port of signal processing unit and accurate peak detection unit respectively.
Single-chip microcomputer U1 adopts 16 single-chip microcomputer MSP430F157 chips, wherein realizes reference voltage, output voltage after signal processing unit processes are converted to digital value with A/D conversion in MSP430F157, accurately measures the crest voltage of output signal; Realize simultaneously the information of inputting by touch-screen is analyzed, and send corresponding data or control signal to other parts; Control LCD liquid crystal is realized the demonstration of various relevant informations etc.
in single-chip microcomputer U1 input/output port P6 mouth, node R efVolt, VAmp are connected with the output node of signal processing unit respectively, node PGA117CS, PGA117DOUT, PGA117DIN, PGA117CLK, PGA117ENABLE are connected with corresponding node in accurate peak detection unit respectively, in single-chip microcomputer U1 input/output port P1, P2, P3 mouth, node DD0---DD7, LCD_DI, LCD_RW, LCD_E, LCD_CSA, LCD_CSB, LCD_REST, LCD_Control, TCS, TDOUT, TDIN, TCLK, TBUSY, TPENIRQ are connected with the corresponding node of touch-screen respectively, in single-chip microcomputer U1 input/output port P5 mouth, node PGA113CS1, PGA113DIO1, PGA113SCLK1 are connected with the corresponding node of the first programmable gain amplifier U4-1 in the signal amplitude regulon respectively, node PGA113CS2, PGA113DIO2, PGA113SCLK2 be connected with the corresponding node of the second programmable gain amplifier U4-2 in the signal amplitude regulon respectively, single-chip microcomputer U1 input/output port P1, P4 mouth node DD0---DD7, AD9850WCLK1, AD9850FQUD1, AD9850RESET1 is connected with the corresponding node of the first numerical control high-precision sine wave generator chip U2-1 input/output port in numerical control two pass signal generation unit respectively, node DD0---DD7, AD9850WCLK2, AD9850FQUD2, AD9850RESET2 is connected with the corresponding node of the second numerical control high-precision sine wave generator chip U2-2 input/output port in numerical control two pass signal generation unit respectively, the corresponding connection of input/output port of debugging interface P_JAG and single-chip microcomputer.Supply node AV3.0V, AV3.3V, DV3.3V, GND, AGND respectively with power supply unit in high-precision power 3.0V, analog power 3.3V, digital power 3.3V, digitally, simulation ground is connected, for this unit provides working power.
In the embodiment depicted in fig. 3, aforementioned numerical control two pass signal generation unit comprises two numerical control high-precision sine wave generator chip U2-1, U2-2,12MHz crystal oscillator U3 and peripheral cells, the input/output port of two numerical control high-precision sine wave generator chip U2-1, U2-2 respectively with the Single-chip Controlling unit in the corresponding connection of input/output port P1, P4 mouth of single-chip microcomputer U1; The output of two numerical control high-precision sine wave generator chip U2-1, U2-2 is connected with the input of two programmable gain amplifier U4-1, U4-2 in aforementioned signal amplitude regulon respectively.
Two numerical control high-precision sine wave generator chips all adopt the AD9850 chip, mainly produce the sinusoidal signal of required frequency signal.Node AD9850WCLK2, the AD9850FQUD2 of node AD9850WCLK1, the AD9850FQUD1 of the first numerical control high-precision sine wave generator chip U2-1 input/output port, AD9850RESET1, DD0---DD7 and the second numerical control high-precision sine wave generator chip U2-2 input/output port, AD9850RESET2, DD0---DD7 are connected with the input/output port P4, the corresponding node of P1 mouth of single-chip microcomputer U1 in the Single-chip Controlling unit respectively; The output node Signal1In of two numerical control high-precision sine wave generator chip U2-1, U2-2 is connected with Signal2In with the input node of two programmable gain amplifier U4-1, U4-2 in the signal amplitude regulon and is connected; Supply node AV1.5V, AV3.3V, DV3.3V, AGND, GND respectively with power supply unit in analog power 1.5V, analog power 3.3V, digital power 3.3V, simulation ground, digitally be connected, for this unit provides working power.
In the embodiment shown in fig. 4, aforesaid signal amplitude regulon comprises two programmable gain amplifier U4-1, U4-2 and peripheral cell, the input/output port of two programmable gain amplifier U4-1, U4-2 respectively with the Single-chip Controlling unit in the corresponding connection of input/output port P5 mouth of single-chip microcomputer U1; The input of two programmable gain amplifier U4-1, U4-2 is connected with the output of two numerical control high-precision sine wave generator chip U2-1, U2-2 in aforementioned numerical control two pass signal generation unit respectively, and the output of two programmable gain amplifier U4-1, U4-2 is connected with the input of power amplification unit respectively.
Two programmable gain amplifier U4-1, U4-2 all adopt programmable gain amplifier PGA113, are mainly to realize gain control under the control of single machine unit, to reach required amplitude.Node PGA113CS2, the PGA113DIO2 of node PGA113CS1, the PGA113DIO1 of the first programmable gain amplifier U4-1 input/output port, PGA113SCLK1 and the second programmable gain amplifier U4-2 input/output port, PGA113SCLK2 are connected with the corresponding node of single-chip microcomputer U1 input/output port P5 mouth in the Single-chip Controlling unit respectively; First, second programmable gain amplifier U4-1, U4-2 input node Signal1In, Signal2In are connected with first, second numerical control high-precision sine wave generator chip U2-1, U2-2 output node in numerical control two pass signal generation unit respectively; Output node Vout1, the Vout2 of two programmable gain amplifier U4-1, U4-2 is connected with input in power amplification unit respectively; Supply node AV1.5V, AV3.3V, DV3.3V, AGND, GND respectively with power supply unit in analog power 1.5V, analog power 3.3V, digital power 3.3V, simulation ground, digitally be connected, for this unit provides working power.
The utility model obtains user profile from touch LCD, by single-chip microcomputer to numerical control two pass signal generation unit, signal amplitude regulon and touch LCD liquid crystal display produce the signal that meets the demands and display frequency, position mutually, the information such as peak-to-peak value and attenuation multiple.This portable high-accuracy multipurpose medical sinusoidal signal generator, adopt high-performance integrated chip and single-chip microcomputer, be easy to miniaturization, commercialization etc., can be used for impedance operator measures, studies, the research of the electric biological effect of various cells and tissue, the demonstration that two simple harmonic vibrations are synthetic has wide market potential.
Above-described embodiment is only also for explanation the utility model, is not to restriction of the present utility model, to improvement of the present utility model, all belongs to the scope of the utility model claim protection under design prerequisite of the present utility model.
Claims (4)
1. portable high-accuracy multipurpose medical sinusoidal signal generator, comprise the Single-chip Controlling unit, power amplification unit, the signal output interface that is connected with the output of power amplification unit and accurate peak detection unit, the signal processing unit that is connected with accurate peak detection unit output, touch LCD liquid crystal display and power supply unit, it is characterized in that also being provided with numerical control two pass signal generation unit, the signal amplitude regulon, described numerical control two pass signal generation unit, the input/output port of signal amplitude regulon respectively with the corresponding connection of input/output port of Single-chip Controlling unit, the output of numerical control two pass signal generation unit is connected with the input of signal amplitude regulon, the output of signal amplitude regulon is connected with the input of power amplification unit.
2. portable high-accuracy multipurpose medical sinusoidal signal generator according to claim 1, it is characterized in that aforementioned Single-chip Controlling unit comprises single-chip microcomputer (U1), signal output interface (JK1) and corresponding peripheral component, input/output port P1, the P2 of described single-chip microcomputer (U1), P3 mouth are connected with the input/output port of touch LCD liquid crystal display respectively; The input/output port P1 of single-chip microcomputer (U1), P4 mouth are connected with the input/output port of numerical control two pass signal generation unit respectively: the input/output port P5 mouth of single-chip microcomputer (U1) is connected with the input/output port of signal amplitude regulon respectively; The input/output port P6 mouth of single-chip microcomputer (U1) is connected with the input/output port of the output port of signal processing unit and accurate peak detection unit respectively.
3. portable high-accuracy multipurpose medical sinusoidal signal generator according to claim 1 and 2, it is characterized in that aforementioned numerical control two pass signal generation unit comprises two numerical control high-precision sine wave generator chips (U2-1, U2-2), 12MHz crystal oscillator (U3) and peripheral cell, the input/output port of two numerical control high-precision sine wave generator chips (U2-1, U2-2) respectively with the Single-chip Controlling unit in the corresponding connection of input/output port P1, P4 mouth of single-chip microcomputer (U1); The output of two numerical control high-precision sine wave generator chips (U2-1, U2-2) is connected with the input of two programmable gain amplifiers (U4-1, U4-2) in aforementioned signal amplitude regulon respectively.
4. portable high-accuracy multipurpose medical sinusoidal signal generator according to claim 1 and 2, it is characterized in that aforesaid signal amplitude regulon comprises two programmable gain amplifiers (U4-1, U4-2) and peripheral cell, the input/output port of two programmable gain amplifiers (U4-1, U4-2) respectively with the Single-chip Controlling unit in the corresponding connection of input/output port P5 mouth of single-chip microcomputer (U1); The input of two programmable gain amplifiers (U4-1, U4-2) is connected with the output of two numerical control high-precision sine wave generator chips (U2-1, U2-2) in aforementioned numerical control two pass signal generation unit respectively, and the output of two programmable gain amplifiers (U4-1, U4-2) is connected with the input of power amplification unit respectively.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201220722913 CN202998024U (en) | 2012-12-25 | 2012-12-25 | Portable high-precision multi-purpose medical sinusoidal signal generator |
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| CN 201220722913 CN202998024U (en) | 2012-12-25 | 2012-12-25 | Portable high-precision multi-purpose medical sinusoidal signal generator |
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| CN 201220722913 Expired - Fee Related CN202998024U (en) | 2012-12-25 | 2012-12-25 | Portable high-precision multi-purpose medical sinusoidal signal generator |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105125212A (en) * | 2015-06-25 | 2015-12-09 | 深圳市芯海科技有限公司 | Generation method of frequency and shape waveforms used for human impedance measuring |
| CN109452937A (en) * | 2018-12-26 | 2019-03-12 | 中国计量科学研究院 | Multifunctional human electro physiology simulator and control method |
-
2012
- 2012-12-25 CN CN 201220722913 patent/CN202998024U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105125212A (en) * | 2015-06-25 | 2015-12-09 | 深圳市芯海科技有限公司 | Generation method of frequency and shape waveforms used for human impedance measuring |
| CN109452937A (en) * | 2018-12-26 | 2019-03-12 | 中国计量科学研究院 | Multifunctional human electro physiology simulator and control method |
| CN109452937B (en) * | 2018-12-26 | 2022-04-08 | 中国计量科学研究院 | Multifunctional human body electrophysiological simulation device and control method |
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Granted publication date: 20130612 Termination date: 20131225 |