CN205006895U - Breathe signal detection device's improvement structure - Google Patents

Breathe signal detection device's improvement structure Download PDF

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Publication number
CN205006895U
CN205006895U CN201520712420.2U CN201520712420U CN205006895U CN 205006895 U CN205006895 U CN 205006895U CN 201520712420 U CN201520712420 U CN 201520712420U CN 205006895 U CN205006895 U CN 205006895U
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China
Prior art keywords
chip microcomputer
amplifier
instrument amplifier
signal
display screen
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CN201520712420.2U
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Chinese (zh)
Inventor
柴军
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成都汉康信息产业有限公司
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Priority to CN201520712420.2U priority Critical patent/CN205006895U/en
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Publication of CN205006895U publication Critical patent/CN205006895U/en

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Abstract

The utility model discloses a breathe signal detection device's improvement structure, including singlechip, LCD touch display screen, voice broadcast ware, VI transfer circuit, instrument amplifier, full wave rectifier circuit and band pass filter, all setting up two electrodes on VI transfer circuit and the instrument amplifier and being used for connecting human cavity, the VI transfer circuit is still connected and is separated straight amplifier, and full wave rectifier circuit is still connected to the instrument amplifier, sine wave signal source generator and AD converter are connected simultaneously to the singlechip, still connect band pass filter between AD converter and full wave rectifier circuit, still connect LCD touch display screen and voice broadcast ware on the singlechip. The utility model discloses an above -mentioned principle need not to use the sensor also can observe clear stable breathing impedance curve, and reduced the interference of contact resistance to measuring -signal in the testing process, has improved measured data's accuracy, and the device looks over from taking voice broadcast and LCD touch display screen that data are convenient more diversified in addition.

Description

The modified node method of breath signal checkout gear

Technical field

This utility model relates to Intensive Care Therapy field, is specifically related to the modified node method of breath signal checkout gear.

Background technology

Since the custodial care facility appearance of the simple function that 20 century 70s have, it just progressively obtains the extensive use of clinical monitoring.But the custodial care facility of simple function is due to the limitation of its monitoring function, far can not meet the needs of clinical practice, seriously constrain the rescue of hospital to numerous critical patients.Enter the nineties, along with the development of sensing technology and electronic technology, monitored parameters is on the increase, and is guarded develop into multi-parameter monitoring by the single parameter in past.Such as guarded by single cardiac monitoring, blood pressure monitoring, blood oxygen saturation, progressively develop into the multi-parameter monitor comprising electrocardio, breathing, blood pressure, blood oxygen saturation, body temperature, End-tidal carbon dioxide, cardiac output and anesthetic gases analysis etc., these equipment just play positive effect in the diagnosis of hospital clinical.Nowadays in the process detected breath signal, need the auxiliary sensor that uses just can record respiratory impedance curve, and existing checkout gear in use contact resistance measuring-signal is had a negative impact, the final accuracy measured breath signal and detect of impact.In addition, the data that this device gathers just can only be checked to computer by wired data transfer later, check that data procedures is too single loaded down with trivial details.

Utility model content

This utility model overcomes the deficiencies in the prior art, the modified node method of breath signal checkout gear is provided, this checkout gear also can observe steady and audible respiratory impedance curve without the need to using sensor, and in testing process, decrease the interference of contact resistance to measuring-signal, further increase the accuracy of measurement data, this device carries voice broadcast and LCD touch display screen in addition, checks that data are more diversified.

For solving above-mentioned technical problem, this utility model is by the following technical solutions: the modified node method of breath signal checkout gear, comprise single-chip microcomputer, LCD touch display screen, voice announcer, sine wave signal source generator, every straight amplifier, V/I translation circuit, instrument amplifier, full-wave rectifying circuit and band filter, described V/I translation circuit with instrument amplifier is all arranged two electrodes for being connected body cavity, V/I translation circuit also connects every straight amplifier, and instrument amplifier also connects full-wave rectifying circuit; Described single-chip microcomputer connects sine wave signal source generator and A/D converter simultaneously, goes back connecting band bandpass filter between A/D converter and full-wave rectifying circuit, and single-chip microcomputer also connects LCD touch display screen and voice announcer; Describedly to be connected between V/I translation circuit and sine wave signal source generator every straight amplifier.

The sine wave source of 50kHz is obtained by Single-chip Controlling sine wave signal source generator, by after the DC component of straight amplifier filtering sinusoidal signal, signal is just obtained the sine wave source of the 50kHz of standard after exchanging and amplifying, more just can be obtained the sinusoidal wave constant-current source of 1mA of 50kHz by V/I translation circuit.This constant-current source is applied on torso model, what obtain from measurement electrode two ends is a high-frequency am signal modulated by breath signal, recycling instrument amplifier amplifies detection signal, then full-wave rectifying circuit is utilized to carry out demodulation to high-frequency am signal, detect the envelope of high-frequency signal amplitude change, this envelope is the signal with impedance variation, most relief impedance change signal is by the band filter of 0.08Hz ~ 10Hz, filtering DC component and high frequency spurs interference, just can obtain the prototype of breath signal, after breath signal digitized, utilize to further process in embedded computer system and just can obtain breath signal.This device uses other sensors also can observe steady and audible respiratory impedance curve without the need to additionally assisting, V/I translation circuit in this device with instrument amplifier is all arranged two electrodes for being connected body cavity, four electrode constant-current driving methods are adopted to carry out, substantially reduce contact resistance to the impact of measuring breath signal, improve the accuracy of measurement result.The LCD touch display screen that single-chip microcomputer connects only needs manually to click and can show test results, and the test data in the past for single-chip microcomputer storage also can be clicked selectivity and check, operates more simple and convenient.And the setting of voice announcer, then can carry out voice broadcast to selecting the data of checking simultaneously, checking that data are more diversified, be particularly suitable for the not so good old man of vision and use.

Described single-chip microcomputer also connects the WiFi module that model is MV269.And arranging of this module facilitates data to be transmitted by wireless network, eliminate the transmission of intermediate medium, data transmission procedure is more convenient.

The model of described single-chip microcomputer is C8051F020.This single-chip microcomputer is a kind of mixed-signal system level single-chip microcomputer that Cygnal goes out.Sheet includes the CPU core of CIP-51, and its instruction system and MCS-51 are completely compatible.C8051F020 single-chip microcomputer wherein contains Flash program storage in 64kB sheet, and the RAM of 4352B, 8 I/O ports be the part such as the programmable count/Timer Array of totally 64 I/O mouth lines, 12 A/D converters and 8 A/D converters and two 12 D/A converters, 2 comparators, 5 16 general purpose timers, 5 seizure/comparison modules, WatchDog Timer, VDD monitor and temperature sensor.Doubleclocking supported by C8051F020 single-chip microcomputer, and its operating voltage range is 2.7 ~ 3.6V(port I/O, and the withstand voltage of RST and JTAG pin is 5V).Compared with 51 former series monolithics, C8051F020 adds many functions, and its reliability and speed there has also been large increase simultaneously, uses the monolithic function of this model to improve breath signal and detect several times in this device.

The model of described sine wave signal source generator is AD9833.This waveform generator can produce the periodic signal of random waveform, the frequency amplitude of the flexible control signal of energy, phase place, and in very wide scope quick switching frequency, there is high-resolution export, use DDS technique construction frequency signal source, the signal frequency of continuous accurate adjustment can be obtained, amplitude phase controlling is convenient, and memory capacity is large; It is few that AWG accounts for microsystem resource, improves the response speed of device.

The model of described instrument amplifier is PCA206.The instrument amplifier of this model can be satisfied the demand completely.

Compared with prior art, the beneficial effects of the utility model are:

1, the V/I translation circuit in this device with instrument amplifier is all arranged two electrodes for being connected body cavity, four electrode constant-current driving methods are adopted to carry out, substantially reduce contact resistance to the impact of measuring breath signal, improve the accuracy of measurement result, this device uses other sensors also can observe steady and audible respiratory impedance curve without the need to additionally assisting.

2, the LCD touch display screen connected on single-chip microcomputer only needs manually to click and can show test results, test data in the past for single-chip microcomputer storage also can be clicked selectivity and check, operate more simple and convenient, and the setting of voice announcer, then can carry out voice broadcast to selecting the data of checking simultaneously, being particularly suitable for the not so good old man of vision and using.

Accompanying drawing explanation

Fig. 1 is theory diagram of the present utility model.

Detailed description of the invention

Be further elaborated this utility model below in conjunction with accompanying drawing, embodiment of the present utility model is not limited thereto.

Embodiment 1:

As shown in Figure 1, this utility model comprise single-chip microcomputer, LCD touch display screen, voice announcer, sine wave signal source generator, every straight amplifier, V/I translation circuit, instrument amplifier, full-wave rectifying circuit and band filter, described V/I translation circuit with instrument amplifier is all arranged two electrodes for being connected body cavity, V/I translation circuit also connects every straight amplifier, and instrument amplifier also connects full-wave rectifying circuit; Described single-chip microcomputer connects sine wave signal source generator and A/D converter simultaneously, goes back connecting band bandpass filter between A/D converter and full-wave rectifying circuit, and single-chip microcomputer also connects LCD touch display screen and voice announcer; Describedly to be connected between V/I translation circuit and sine wave signal source generator every straight amplifier.

The sine wave source of 50kHz is obtained by Single-chip Controlling sine wave signal source generator, by after the DC component of straight amplifier filtering sinusoidal signal, signal is just obtained the sine wave source of the 50kHz of standard after exchanging and amplifying, more just can be obtained the sinusoidal wave constant-current source of 1mA of 50kHz by V/I translation circuit.This constant-current source is applied on torso model, what obtain from measurement electrode two ends is a high-frequency am signal modulated by breath signal, recycling instrument amplifier amplifies detection signal, then full-wave rectifying circuit is utilized to carry out demodulation to high-frequency am signal, detect the envelope of high-frequency signal amplitude change, this envelope is the signal with impedance variation, most relief impedance change signal is by the band filter of 0.08Hz ~ 10Hz, filtering DC component and high frequency spurs interference, just can obtain the prototype of breath signal, after breath signal digitized, utilize to further process in embedded computer system and just can obtain breath signal.This device uses other sensors also can observe steady and audible respiratory impedance curve without the need to additionally assisting, V/I translation circuit in this device with instrument amplifier is all arranged two electrodes for being connected body cavity, four electrode constant-current driving methods are adopted to carry out, substantially reduce contact resistance to the impact of measuring breath signal, improve the accuracy of measurement result.The LCD touch display screen that single-chip microcomputer connects only needs manually to click and can show test results, and the test data in the past for single-chip microcomputer storage also can be clicked selectivity and check, operates more simple and convenient.And the setting of voice announcer, then can carry out voice broadcast to selecting the data of checking simultaneously, being particularly suitable for the not so good old man of vision and using.

Embodiment 2:

The present embodiment is preferably as follows on the basis of embodiment 1: described single-chip microcomputer also connects the WiFi module that model is MV269.And arranging of this module facilitates data to be transmitted by wireless network, eliminate the transmission of intermediate medium, data transmission procedure is more convenient.

The model of described single-chip microcomputer is C8051F020.This single-chip microcomputer is a kind of mixed-signal system level single-chip microcomputer that Cygnal goes out.Sheet includes the CPU core of CIP-51, and its instruction system and MCS-51 are completely compatible.C8051F020 single-chip microcomputer wherein contains Flash program storage in 64kB sheet, and the RAM of 4352B, 8 I/O ports be the part such as the programmable count/Timer Array of totally 64 I/O mouth lines, 12 A/D converters and 8 A/D converters and two 12 D/A converters, 2 comparators, 5 16 general purpose timers, 5 seizure/comparison modules, WatchDog Timer, VDD monitor and temperature sensor.Doubleclocking supported by C8051F020 single-chip microcomputer, and its operating voltage range is 2.7 ~ 3.6V(port I/O, and the withstand voltage of RST and JTAG pin is 5V).Compared with 51 former series monolithics, C8051F020 adds many functions, and its reliability and speed there has also been large increase simultaneously, uses the monolithic function of this model to improve breath signal and detect several times in this device.

The model of described sine wave signal source generator is AD9833.This waveform generator can produce the periodic signal of random waveform, the frequency amplitude of the flexible control signal of energy, phase place, and in very wide scope quick switching frequency, there is high-resolution export, use DDS technique construction frequency signal source, the signal frequency of continuous accurate adjustment can be obtained, amplitude phase controlling is convenient, and memory capacity is large; It is few that AWG accounts for microsystem resource, improves the response speed of device.

The model of described instrument amplifier is PCA206.The instrument amplifier of this model can be satisfied the demand completely.

Just this utility model can be realized as mentioned above.

Claims (5)

1. the modified node method of breath signal checkout gear, it is characterized in that: comprise single-chip microcomputer, LCD touch display screen, voice announcer, sine wave signal source generator, every straight amplifier, V/I translation circuit, instrument amplifier, full-wave rectifying circuit and band filter, described V/I translation circuit with instrument amplifier is all arranged two electrodes for being connected body cavity, V/I translation circuit also connects every straight amplifier, and instrument amplifier also connects full-wave rectifying circuit; Described single-chip microcomputer connects sine wave signal source generator and A/D converter simultaneously, goes back connecting band bandpass filter between A/D converter and full-wave rectifying circuit, and single-chip microcomputer also connects LCD touch display screen and voice announcer; Describedly to be connected between V/I translation circuit and sine wave signal source generator every straight amplifier.
2. the modified node method of breath signal checkout gear according to claim 1, is characterized in that: described single-chip microcomputer also connects the WiFi module that model is MV269.
3. the modified node method of breath signal checkout gear according to claim 1, is characterized in that: the model of described single-chip microcomputer is C8051F020.
4. the modified node method of breath signal checkout gear according to claim 1, is characterized in that: the model of described sine wave signal source generator is AD9833.
5. the modified node method of breath signal checkout gear according to claim 1, is characterized in that: the model of described instrument amplifier is PCA206.
CN201520712420.2U 2015-09-15 2015-09-15 Breathe signal detection device's improvement structure CN205006895U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105105749A (en) * 2015-09-15 2015-12-02 成都汉康信息产业有限公司 Improved breathing signal detection device
CN107260174A (en) * 2017-07-10 2017-10-20 中央军委后勤保障部军需装备研究所 A kind of respiratory rate detecting system and method based on the poor method of breathing phases

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105105749A (en) * 2015-09-15 2015-12-02 成都汉康信息产业有限公司 Improved breathing signal detection device
CN107260174A (en) * 2017-07-10 2017-10-20 中央军委后勤保障部军需装备研究所 A kind of respiratory rate detecting system and method based on the poor method of breathing phases

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