CN105640517A - Human body function recognition device - Google Patents
Human body function recognition device Download PDFInfo
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- CN105640517A CN105640517A CN201610002048.5A CN201610002048A CN105640517A CN 105640517 A CN105640517 A CN 105640517A CN 201610002048 A CN201610002048 A CN 201610002048A CN 105640517 A CN105640517 A CN 105640517A
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- blood oxygen
- emitting diode
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
- A61B5/0205—Simultaneously evaluating both cardiovascular conditions and different types of body conditions, e.g. heart and respiratory condition
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/0002—Remote monitoring of patients using telemetry, e.g. transmission of vital signals via a communication network
- A61B5/0015—Remote monitoring of patients using telemetry, e.g. transmission of vital signals via a communication network characterised by features of the telemetry system
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
- A61B5/024—Detecting, measuring or recording pulse rate or heart rate
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/145—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue
- A61B5/1455—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue using optical sensors, e.g. spectral photometrical oximeters
- A61B5/14551—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue using optical sensors, e.g. spectral photometrical oximeters for measuring blood gases
Abstract
The invention relates to a human body function recognition device. The recognition device comprises a pulse detection sub-system, a blood oxygen detection sub-system, an emergency key and an AT89C51 chip, the pulse detection sub-system is used for extracting pulse information of a captain driving in a driving cabin of a passenger ship, the blood oxygen detection sub-system is used for extracting blood oxygen information of the captain driving in the driving cabin of the passenger ship, the AT89C51 chip is connected with the pulse detection sub-system and the blood oxygen detection sub-system, and whether the emergency key is controlled to start emergency communication equipment or not is determined according to the detection results of the pulse detection sub-system and the blood oxygen detection sub-system. By means of the human body function recognition device, early warning can be provided for passengers of the passenger ship according to the physiological condition of the captain driving the passenger ship.
Description
Technical field
The present invention relates to blood Monitoring Oxygen Ventilation field, particularly relate to a kind of function of human body identification device.
Background technology
In prior art, the monitoring of passenger steamer is concentrated mainly on passenger steamer object itself, and to driving the captain of passenger steamer, corresponding monitoring means are limited, are more the video monitorings to passenger compartment, even if there being some monitoring means for driver's cabin, also more is detection to limited physical quantitys such as cabin interior temperature, air pressure, lack the detection of the physiological status to captain, say nothing of employing when captain's abnormal state, notify the communication mechanism of the personnel of passenger compartment in time.
But actually, the physiological status of captain is extremely important, on the one hand, in fact it could happen that captain's spirit hypertonicity or ill situation, if not notifying that other staff carry out rescuing and replacing driving, easily cause the economic loss of casualties, on the other hand, it is also possible to the situation that captain's dangerous driving is even hijacked a ship occur, at this moment generally the physiological parameter of captain there will be some omens, if able to these omens of prediction captain, just can avert catastrophe to a certain extent.
For this, the present invention proposes a kind of function of human body identification device, pulse signal and the blood oxygen signal of the captain of steering position can be understood in time, once exception occurs, urgency communication mechanism can be started to help the passenger of passenger compartment to seek external assistance, occurring thus being effectively prevented from overwater accident, improving the safety of passenger boat operation.
Summary of the invention
In order to solve the technical problem that prior art exists, the invention provides a kind of function of human body identification device, utilize targetedly, can be used for the pulse monitoring equipment of the cramped construction of passenger steamer driving cabin and blood Monitoring Oxygen Ventilation equipment realizes the pulse information of the passenger steamer captain to steering position and the extraction of blood oxygen saturation respectively, and alarm mechanism is triggered when exception, more crucially, the triggering passenger urgency traffic passage when exception, helps passenger to relate to external assistance as early as possible.
According to an aspect of the present invention, provide a kind of function of human body identification device, described identification device includes pulse detection subsystem, blood oxygen detection subsystem, emergency button and AT89C51 chip, described pulse detection subsystem is for being extracted in passenger boat driving cabin the pulse information of the captain driven, described blood oxygen detection subsystem is for being extracted in passenger boat driving cabin the blood oxygenation information of the captain driven, described AT89C51 chip detects subsystem with described pulse detection subsystem and described blood oxygen and is connected respectively, the testing result detecting subsystem according to described pulse detection subsystem and described blood oxygen determines whether to control described emergency button to start communication device for emergency.
More specifically, in described function of human body identification device, also include: the first resistance, one end is connected with 5V power supply, and the other end is connected with the anode of infrared receiving diode; Second resistance, one end is connected with 5V power supply, and one end of the other end and the 3rd resistance connects; 3rd resistance, other end ground connection, and there is the resistance identical with the second resistance; First two-way operational amplifier, for producing the reference voltage of 2.5V, the other end of its anode and the second resistance connects, and one end of negative terminal and the first electric capacity connects, outfan is connected with the negative terminal of infrared-emitting diode, and negative terminal is also connected with the negative terminal of infrared-emitting diode; First electric capacity, other end ground connection; 4th resistance, one end is connected with the negative terminal of infrared-emitting diode; Second two-way operational amplifier, the other end of anode and the 4th resistance connects, and negative terminal is connected with the anode of infrared receiving diode, and outfan is as pulse voltage; 5th resistance, is connected in parallel between the second two-way operational amplifier negative terminal and the second two-way operational amplifier output terminal; Second electric capacity, is connected in parallel between the second two-way operational amplifier negative terminal and the second two-way operational amplifier output terminal; Infrared-emitting diode, is arranged on captain ear blood capillary position, is used for launching infrared light, and the negative terminal of infrared-emitting diode is connected with the anode of infrared receiving diode; Infrared receiving diode, is arranged on captain ear blood capillary position, is positioned at the relative position of described infrared-emitting diode, for receiving the infrared light after transmission captain ear blood capillary; Light emitting diode, is arranged on captain's finger fingertip blood capillary position, is connected with light source driving circuit, for the LED control signal sent based on light source driving circuit, alternate emission infrared light and HONGGUANG; Light source driving circuit, built-in timer, for sending LED control signal to described light emitting diode; Optical-electrical converter, it is arranged on captain's finger fingertip, it is positioned at the relative position of described light emitting diode, for receiving the infrared light after transmission captain's finger fingertip blood capillary and HONGGUANG, and transmitted infrared light and transmission HONGGUANG are respectively converted into analog current signal, to obtain simulation infrared light electric current and simulation HONGGUANG electric current; Current-to-voltage converting circuit, is connected with described optical-electrical converter, for simulation infrared light electric current and simulation HONGGUANG electric current are carried out current/voltage conversion respectively, to obtain simulation infrared light voltage and simulation red voltages respectively; Signal amplifier, is connected with described current-to-voltage converting circuit, is used for simulation infrared light voltage is amplified respectively with simulation red voltages, amplifies voltage to obtain to simulate infrared light amplification voltage and simulate HONGGUANG; Signal deteching circuit, it is connected with described signal amplifier, electronic circuit and alternating current signal detection electronic circuit is detected including direct current signal, for detecting the flip-flop and alternating component simulated in infrared light voltage, to export as the first DC voltage and the first alternating voltage, it is additionally operable to the flip-flop in detection simulation red voltages and alternating component, to export as the second DC voltage and the second alternating voltage; Analog-digital converter, it is connected with described signal deteching circuit, for the first DC voltage, the first alternating voltage, the second DC voltage and the second alternating voltage are carried out analog digital conversion respectively, to obtain the first Digital DC voltage, the first Digital AC voltage, the second Digital DC voltage and the second Digital AC voltage;Warning screen, is arranged in passenger boat passenger compartment nacelle, is connected with AT89C51 chip, is used for when receiving abnormality signal, display button call character, when receiving normal state signal, does not display operation; Emergency button, is arranged in passenger boat passenger compartment nacelle, is positioned at described warning screen side; By key driving apparatus, it is connected with described emergency button, for when the pressing operation received in described emergency button, sending power supply suppling signal; Communication device for emergency, is arranged in passenger boat passenger compartment nacelle, is positioned at described warning screen side, for the call-information of passenger is sent to the server place of passenger boat administrative center by communication link; Switch switching equipment, it is connected by key driving apparatus with described, when receiving described power supply suppling signal, open the interface channel between described independently-powered equipment and described communication device for emergency to keep the supply of electric power to described communication device for emergency of the described independently-powered equipment; Independently-powered equipment, with described warning screen, described by key driving apparatus, described switch switching equipment and described communication device for emergency be connected respectively, be only described warning screen, described by key driving apparatus, described switch switching equipment and described communication device for emergency provide supply of electric power; AT89C51 chip, it is connected with described analog-digital converter, by the ratio of the second Digital AC voltage and the second Digital DC voltage divided by the ratio of the first Digital AC voltage and the first Digital DC voltage to obtain the absorbing light ratio factor, and calculate blood oxygen saturation based on the absorbing light ratio factor, wherein, blood oxygen saturation is linear with the absorbing light ratio factor; Described AT89C51 chip also is connected to obtain described pulse voltage with the outfan of described second two-way operational amplifier, and when described pulse voltage is outside default pulse range, send cacosphyxia identification signal, when described blood oxygen saturation is when default blood oxygen saturation upper concentration, send the too high identification signal of blood oxygen saturation, when described blood oxygen saturation is when default blood oxygen saturation least concentration, send the too low identification signal of blood oxygen saturation; Wherein, when AT89C51 chip sends the too low identification signal of cacosphyxia identification signal, blood oxygen saturation too high identification signal or blood oxygen saturation, AT89C51 chip is simultaneously emitted by abnormality signal, and otherwise, AT89C51 chip is simultaneously emitted by normal state signal; Between infrared-emitting diode and infrared receiving diode during pulseless, pulse voltage is 2.5V, and when there is, between infrared-emitting diode and infrared receiving diode, the pulse beated, blood vessels make ear's light transmission be deteriorated, and pulse voltage is more than 2.5V; First two-way operational amplifier and the second two-way operational amplifier are all the two-way operational amplifier of TI company.
More specifically, in described function of human body identification device: the wavelength of the infrared light that described light emitting diode is launched is 940nm.
More specifically, in described function of human body identification device: the wavelength of the HONGGUANG that described light emitting diode is launched is 660nm.
More specifically, in described function of human body identification device: between described signal amplifier and described signal deteching circuit, also set up signal filter circuit.
More specifically, in described function of human body identification device: described signal filter circuit amplifies the noise contribution in voltage for filtering simulation infrared light amplification voltage and simulation HONGGUANG.
Accompanying drawing explanation
Below with reference to accompanying drawing, embodiment of the present invention are described, wherein:
Fig. 1 is the block diagram of the first embodiment of the function of human body identification device of the present invention.
Accompanying drawing labelling: 1 pulse detection subsystem; 2 blood oxygen detection subsystems; 3 emergency button; 4AT89C51 chip
Detailed description of the invention
Below with reference to accompanying drawings the embodiment of the function of human body identification device of the present invention is described in detail.
Passenger boat generally has perfect superstructure, in order to arrange various types of other main cabin and some service cabins; Lifesaving, fire prevention, the safety requirements such as anti-heavy is strict; There is higher comfortableness, there is good sound insulation, shock-absorbing performance; There are the higher speed of a ship or plane and the margin of power. The usual course line of passenger boat is fixed, flight is regular.
Due to the development of air transportation, marine passenger boat has shifted towards coastal and coastal waters short distance transport, and is engaged in tourism more, and the passenger boat of inland waters is still a kind of important passenger traffic equipment of many countries. According to navigation the ground different seagoing vessels of point mode, ferry boat, river steamer etc., wherein seagoing vessel can be allocated as again coastal waters and trans-oceanic two kinds according to distance, and wherein trans-oceanic seagoing vessel passenger boat transfers the pleasure boat of sightseeing tour function formula to.
Special environment due to water transportation, and passenger steamer generally carries more passenger, the detection of passenger steamer is extremely important, but, at present the detection of passenger steamer is mainly appeared on and passenger steamer object is detected, the state-detection of passenger steamer human pilot is considerably less, also lack the corresponding mechanism that can carry out urgency traffic when exception being detected simultaneously.
For this, the present invention has built a kind of function of human body identification device, adopt high-precision pulse monitoring equipment and blood Monitoring Oxygen Ventilation equipment that pulse and the blood oxygen saturation of captain are carried out detection in time and reported to the police, and when recognizing captain's abnormal state, start urgency traffic equipment in time, it is easy to passenger quickly cry for help escape, thus reducing too much casualties.
Fig. 1 is the block diagram of the first embodiment of the function of human body identification device of the present invention, described identification device includes pulse detection subsystem, blood oxygen detection subsystem, emergency button and AT89C51 chip, described pulse detection subsystem is for being extracted in passenger boat driving cabin the pulse information of the captain driven, described blood oxygen detection subsystem is for being extracted in passenger boat driving cabin the blood oxygenation information of the captain driven, described AT89C51 chip detects subsystem with described pulse detection subsystem and described blood oxygen and is connected respectively, the testing result detecting subsystem according to described pulse detection subsystem and described blood oxygen determines whether to control described emergency button to start communication device for emergency.
Then, continue the second embodiment of the function of human body identification device of the present invention is further detailed.
Described identification device includes: the first resistance, and one end is connected with 5V power supply, and the other end is connected with the anode of infrared receiving diode; Second resistance, one end is connected with 5V power supply, and one end of the other end and the 3rd resistance connects; 3rd resistance, other end ground connection, and there is the resistance identical with the second resistance; First two-way operational amplifier, for producing the reference voltage of 2.5V, the other end of its anode and the second resistance connects, and one end of negative terminal and the first electric capacity connects, outfan is connected with the negative terminal of infrared-emitting diode, and negative terminal is also connected with the negative terminal of infrared-emitting diode.
Described identification device includes: the first electric capacity, other end ground connection; 4th resistance, one end is connected with the negative terminal of infrared-emitting diode; Second two-way operational amplifier, the other end of anode and the 4th resistance connects, and negative terminal is connected with the anode of infrared receiving diode, and outfan is as pulse voltage;5th resistance, is connected in parallel between the second two-way operational amplifier negative terminal and the second two-way operational amplifier output terminal; Second electric capacity, is connected in parallel between the second two-way operational amplifier negative terminal and the second two-way operational amplifier output terminal; Infrared-emitting diode, is arranged on captain ear blood capillary position, is used for launching infrared light, and the negative terminal of infrared-emitting diode is connected with the anode of infrared receiving diode; Infrared receiving diode, is arranged on captain ear blood capillary position, is positioned at the relative position of described infrared-emitting diode, for receiving the infrared light after transmission captain ear blood capillary.
Described identification device includes: light emitting diode, is arranged on captain's finger fingertip blood capillary position, is connected with light source driving circuit, for the LED control signal sent based on light source driving circuit, alternate emission infrared light and HONGGUANG; Light source driving circuit, built-in timer, for sending LED control signal to described light emitting diode; Optical-electrical converter, it is arranged on captain's finger fingertip, it is positioned at the relative position of described light emitting diode, for receiving the infrared light after transmission captain's finger fingertip blood capillary and HONGGUANG, and transmitted infrared light and transmission HONGGUANG are respectively converted into analog current signal, to obtain simulation infrared light electric current and simulation HONGGUANG electric current.
Described identification device includes: current-to-voltage converting circuit, is connected with described optical-electrical converter, for simulation infrared light electric current and simulation HONGGUANG electric current are carried out current/voltage conversion respectively, to obtain simulation infrared light voltage and simulation red voltages respectively; Signal amplifier, is connected with described current-to-voltage converting circuit, is used for simulation infrared light voltage is amplified respectively with simulation red voltages, amplifies voltage to obtain to simulate infrared light amplification voltage and simulate HONGGUANG; Signal deteching circuit, it is connected with described signal amplifier, electronic circuit and alternating current signal detection electronic circuit is detected including direct current signal, for detecting the flip-flop and alternating component simulated in infrared light voltage, to export as the first DC voltage and the first alternating voltage, it is additionally operable to the flip-flop in detection simulation red voltages and alternating component, to export as the second DC voltage and the second alternating voltage.
Described identification device includes: analog-digital converter, it is connected with described signal deteching circuit, for the first DC voltage, the first alternating voltage, the second DC voltage and the second alternating voltage are carried out analog digital conversion respectively, to obtain the first Digital DC voltage, the first Digital AC voltage, the second Digital DC voltage and the second Digital AC voltage; Warning screen, is arranged in passenger boat passenger compartment nacelle, is connected with AT89C51 chip, is used for when receiving abnormality signal, display button call character, when receiving normal state signal, does not display operation.
Described identification device includes: emergency button, is arranged in passenger boat passenger compartment nacelle, is positioned at described warning screen side; By key driving apparatus, it is connected with described emergency button, for when the pressing operation received in described emergency button, sending power supply suppling signal; Communication device for emergency, is arranged in passenger boat passenger compartment nacelle, is positioned at described warning screen side, for the call-information of passenger is sent to the server place of passenger boat administrative center by communication link.
Described identification device includes: switch switching equipment, it is connected by key driving apparatus with described, when receiving described power supply suppling signal, open the interface channel between described independently-powered equipment and described communication device for emergency to keep the supply of electric power to described communication device for emergency of the described independently-powered equipment;Independently-powered equipment, with described warning screen, described by key driving apparatus, described switch switching equipment and described communication device for emergency be connected respectively, be only described warning screen, described by key driving apparatus, described switch switching equipment and described communication device for emergency provide supply of electric power.
Described identification device includes: AT89C51 chip, it is connected with described analog-digital converter, by the ratio of the second Digital AC voltage and the second Digital DC voltage divided by the ratio of the first Digital AC voltage and the first Digital DC voltage to obtain the absorbing light ratio factor, and calculate blood oxygen saturation based on the absorbing light ratio factor, wherein, blood oxygen saturation is linear with the absorbing light ratio factor; Described AT89C51 chip also is connected to obtain described pulse voltage with the outfan of described second two-way operational amplifier, and when described pulse voltage is outside default pulse range, send cacosphyxia identification signal, when described blood oxygen saturation is when default blood oxygen saturation upper concentration, send the too high identification signal of blood oxygen saturation, when described blood oxygen saturation is when default blood oxygen saturation least concentration, send the too low identification signal of blood oxygen saturation.
Wherein, when AT89C51 chip sends the too low identification signal of cacosphyxia identification signal, blood oxygen saturation too high identification signal or blood oxygen saturation, AT89C51 chip is simultaneously emitted by abnormality signal, and otherwise, AT89C51 chip is simultaneously emitted by normal state signal; Between infrared-emitting diode and infrared receiving diode during pulseless, pulse voltage is 2.5V, and when there is, between infrared-emitting diode and infrared receiving diode, the pulse beated, blood vessels make ear's light transmission be deteriorated, and pulse voltage is more than 2.5V; First two-way operational amplifier and the second two-way operational amplifier are all the two-way operational amplifier of TI company.
Alternatively, in described identification device: the wavelength of the infrared light that described light emitting diode is launched is 940nm; The wavelength of the HONGGUANG that described light emitting diode is launched is 660nm; Signal filter circuit is also set up between described signal amplifier and described signal deteching circuit; And described signal filter circuit is for filtering simulation infrared light and amplify voltage and simulation HONGGUANG amplifying the noise contribution in voltage.
Additionally, the capacity that blood oxygen saturation (SpO2) is the HbO2 Oxyhemoglobin (HbO2) combined by oxygen in blood accounts for whole combinative hemoglobin (Hb, hemoglobin) percentage ratio of capacity, the i.e. concentration of blood oxygen in blood, he is the important physiological parameter of breath cycle. And the ratio that functional oxygen saturation is HbO2 concentration and HbO2+Hb concentration, it is different from percent shared by HbO2 Oxyhemoglobin. Therefore, the oxygenate of lung and hemoglobin oxygen carrying capacity can be estimated by monitoring arterial oxygen saturation (SaO2). The blood oxygen saturation of normal human's arterial blood is 98%, and venous blood is 75%.
The metabolic processes of human body is biological oxidation process, and oxygen required in metabolic processes, it is enter blood of human body by respiratory system, with the hemoglobin (Hb) in blood rbc, it is combined into HbO2 Oxyhemoglobin (HbO2), then is transported to partes corporis humani and divides in histiocyte. Blood carries the ability of conveying oxygen and namely weighs by blood oxygen saturation.
Adopt the function of human body identification device of the present invention, for prior art lacking passenger steamer captain's physiological status detection equipment and lacking the technical problem of passenger's urgency traffic equipment, adopt high-precision pulse monitoring equipment and blood Monitoring Oxygen Ventilation equipment that pulse and the blood oxygen saturation of passenger steamer captain are carried out detection in time and reported to the police, introduce physiological parameter early warning mechanism and urgency traffic mechanism, help personnel in passenger compartment learn passenger steamer captain's abnormality and contact foreign aid further.
Although it is understood that the present invention discloses as above with preferred embodiment, but above-described embodiment is not limited to the present invention. For any those of ordinary skill in the art, without departing under technical solution of the present invention ambit, all may utilize the technology contents of the disclosure above and technical solution of the present invention is made many possible variations and modification, or be revised as the Equivalent embodiments of equivalent variations. Therefore, every content without departing from technical solution of the present invention, the technical spirit of the foundation present invention, to any simple modification made for any of the above embodiments, equivalent variations and modification, all still falls within the scope of technical solution of the present invention protection.
Claims (2)
1. a function of human body identification device, described identification device includes pulse detection subsystem, blood oxygen detection subsystem, emergency button and AT89C51 chip, described pulse detection subsystem is for being extracted in passenger boat driving cabin the pulse information of the captain driven, described blood oxygen detection subsystem is for being extracted in passenger boat driving cabin the blood oxygenation information of the captain driven, described AT89C51 chip detects subsystem with described pulse detection subsystem and described blood oxygen and is connected respectively, the testing result detecting subsystem according to described pulse detection subsystem and described blood oxygen determines whether to control described emergency button to start communication device for emergency.
2. function of human body identification device as claimed in claim 1, it is characterised in that described identification device includes:
First resistance, one end is connected with 5V power supply, and the other end is connected with the anode of infrared receiving diode;
Second resistance, one end is connected with 5V power supply, and one end of the other end and the 3rd resistance connects;
3rd resistance, other end ground connection, and there is the resistance identical with the second resistance;
First two-way operational amplifier, for producing the reference voltage of 2.5V, the other end of its anode and the second resistance connects, and one end of negative terminal and the first electric capacity connects, outfan is connected with the negative terminal of infrared-emitting diode, and negative terminal is also connected with the negative terminal of infrared-emitting diode;
First electric capacity, other end ground connection;
4th resistance, one end is connected with the negative terminal of infrared-emitting diode;
Second two-way operational amplifier, the other end of anode and the 4th resistance connects, and negative terminal is connected with the anode of infrared receiving diode, and outfan is as pulse voltage;
5th resistance, is connected in parallel between the second two-way operational amplifier negative terminal and the second two-way operational amplifier output terminal;
Second electric capacity, is connected in parallel between the second two-way operational amplifier negative terminal and the second two-way operational amplifier output terminal;
Infrared-emitting diode, is arranged on captain ear blood capillary position, is used for launching infrared light, and the negative terminal of infrared-emitting diode is connected with the anode of infrared receiving diode;
Infrared receiving diode, is arranged on captain ear blood capillary position, is positioned at the relative position of described infrared-emitting diode, for receiving the infrared light after transmission captain ear blood capillary;
Light emitting diode, is arranged on captain's finger fingertip blood capillary position, is connected with light source driving circuit, for the LED control signal sent based on light source driving circuit, alternate emission infrared light and HONGGUANG;
Light source driving circuit, built-in timer, for sending LED control signal to described light emitting diode;
Optical-electrical converter, it is arranged on captain's finger fingertip, it is positioned at the relative position of described light emitting diode, for receiving the infrared light after transmission captain's finger fingertip blood capillary and HONGGUANG, and transmitted infrared light and transmission HONGGUANG are respectively converted into analog current signal, to obtain simulation infrared light electric current and simulation HONGGUANG electric current;
Current-to-voltage converting circuit, is connected with described optical-electrical converter, for simulation infrared light electric current and simulation HONGGUANG electric current are carried out current/voltage conversion respectively, to obtain simulation infrared light voltage and simulation red voltages respectively;
Signal amplifier, is connected with described current-to-voltage converting circuit, is used for simulation infrared light voltage is amplified respectively with simulation red voltages, amplifies voltage to obtain to simulate infrared light amplification voltage and simulate HONGGUANG;
Signal deteching circuit, it is connected with described signal amplifier, electronic circuit and alternating current signal detection electronic circuit is detected including direct current signal, for detecting the flip-flop and alternating component simulated in infrared light voltage, to export as the first DC voltage and the first alternating voltage, it is additionally operable to the flip-flop in detection simulation red voltages and alternating component, to export as the second DC voltage and the second alternating voltage;
Analog-digital converter, it is connected with described signal deteching circuit, for the first DC voltage, the first alternating voltage, the second DC voltage and the second alternating voltage are carried out analog digital conversion respectively, to obtain the first Digital DC voltage, the first Digital AC voltage, the second Digital DC voltage and the second Digital AC voltage;
Warning screen, is arranged in passenger boat passenger compartment nacelle, is connected with AT89C51 chip, is used for when receiving abnormality signal, display button call character, when receiving normal state signal, does not display operation;
Emergency button, is arranged in passenger boat passenger compartment nacelle, is positioned at described warning screen side;
By key driving apparatus, it is connected with described emergency button, for when the pressing operation received in described emergency button, sending power supply suppling signal;
Communication device for emergency, is arranged in passenger boat passenger compartment nacelle, is positioned at described warning screen side, for the call-information of passenger is sent to the server place of passenger boat administrative center by communication link;
Switch switching equipment, it is connected by key driving apparatus with described, when receiving described power supply suppling signal, open the interface channel between described independently-powered equipment and described communication device for emergency to keep the supply of electric power to described communication device for emergency of the described independently-powered equipment;
Independently-powered equipment, with described warning screen, described by key driving apparatus, described switch switching equipment and described communication device for emergency be connected respectively, be only described warning screen, described by key driving apparatus, described switch switching equipment and described communication device for emergency provide supply of electric power;
AT89C51 chip, it is connected with described analog-digital converter, by the ratio of the second Digital AC voltage and the second Digital DC voltage divided by the ratio of the first Digital AC voltage and the first Digital DC voltage to obtain the absorbing light ratio factor, and calculate blood oxygen saturation based on the absorbing light ratio factor, wherein, blood oxygen saturation is linear with the absorbing light ratio factor; Described AT89C51 chip also is connected to obtain described pulse voltage with the outfan of described second two-way operational amplifier, and when described pulse voltage is outside default pulse range, send cacosphyxia identification signal, when described blood oxygen saturation is when default blood oxygen saturation upper concentration, send the too high identification signal of blood oxygen saturation, when described blood oxygen saturation is when default blood oxygen saturation least concentration, send the too low identification signal of blood oxygen saturation;
Wherein, when AT89C51 chip sends the too low identification signal of cacosphyxia identification signal, blood oxygen saturation too high identification signal or blood oxygen saturation, AT89C51 chip is simultaneously emitted by abnormality signal, and otherwise, AT89C51 chip is simultaneously emitted by normal state signal;
Wherein, between infrared-emitting diode and infrared receiving diode during pulseless, pulse voltage is 2.5V, and when there is, between infrared-emitting diode and infrared receiving diode, the pulse beated, blood vessels make ear's light transmission be deteriorated, and pulse voltage is more than 2.5V;
Wherein, the first two-way operational amplifier and the second two-way operational amplifier are all the two-way operational amplifier of TI company;
The wavelength of the infrared light that described light emitting diode is launched is 940nm;
The wavelength of the HONGGUANG that described light emitting diode is launched is 660nm.
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Application publication date: 20160608 |