CN206573551U - A kind of room anoxic content monitoring and anoxic alarm - Google Patents

Abstract

The utility model is related to a kind of room anoxic content monitoring and anoxic alarm, single-chip microcomputer by its A/D converter successively with voltage conversion and signal amplification circuit module, oxygen concentration sensor is connected, single-chip microcomputer passes through its SPI serial communication interface and temperature, pressure single-chip integration transmitter is connected, temperature, pressure single-chip integration transmitter connects voltage conversion and signal amplification circuit module, single-chip microcomputer connects liquid crystal display, liquid crystal display connects audible and visual alarm circuit module, audible and visual alarm circuit module connects single-chip microcomputer by the I/O output interfaces of single-chip microcomputer, audible and visual alarm circuit module connects keyboard, keyboard connects single-chip microcomputer by the I/O input interfaces of single-chip microcomputer, battery supply connects single-chip microcomputer respectively, keyboard and temperature, pressure single-chip integration transmitter.The utility model takes enhancement of environment measure, the oxygen content general level of the health of raising living environment in time by means of the content of oxygen in monitoring indoor air, the oxygen content level of exact knowledge living environment.

Description

A kind of room anoxic content monitoring and anoxic alarm

Technical field

The utility model belongs to analysis and survey control technology field, is related to the monitoring of oxygen content, especially a kind of to occupy Room anoxic content monitoring and anoxic alarm.

Background technology

Oxygen is the important substance basis that human body is depended on for existence, and every point of people is per second in breathing, and oxygen intake breathes out dioxy Change carbon.Exactly such one exhales exhaling the old and inhale the new for a suction, human body is obtained the life energy.Air enters the amount of intrapulmonary by partial pressure of oxygen Influence, air partial pressure of oxygen is higher, and oxygen concentration is bigger, into the oxygen in human body also the more；It is on the contrary then few.Due to oxygen deficiency Caused a series of symptoms, the anoxic of meaning；Long term hypoxia necessarily leads to a series of harm.

Anoxic causes internal aerobic metabolism rate to decline, and anerobic glycolysis is strengthened, the reduction of organism metabolism efficiency, immunity degradation； Anoxic causes Pulmonary Vascular to shrink, and causes pulmonary hypertension, and right ventricle burden increase ultimately results in pulmonary heart disease；Anoxic can aggravate height Blood pressure, aggravates left heart burden, causes arrhythmia cordis；Anoxic stimulates kidney to produce erythropoietin(EPO), makes internal erythremia, Blood viscosity increases, and external perihaemal canal resistance is increased, and heart burden causes or aggravates heart failure, induction miocardial infarction, Cerebral thrombus etc.；Anoxic causes liver cell oedema, denaturation and necrosis, hepatosis, liver fibrosis；Shrink Renal vascular, kidney is small Pipe epithelial cell is downright bad and causes renal insufficiency etc.；Brain long term hypoxia can produce a series of spirit, nervous symptoms：As slept Obstacle, intelligence decline, decrease of memory, abnormal behavior, personality change etc.；Anoxic causes whole health enters a kind of mutual The vicious circle state of influence.

It is minimum safety limit that oxygen amount in air, which drops to 19%,；It is dangerous values to drop to 18%；If being down to 16%, Then there are obvious hypoxic conditions in human body.Anoxic can be divided into two kinds of exogenous anoxic and endogenous anoxic.Due to human body itself Reason and can not fully utilize oxygen, such as with some influence oxygen absorptions and conveying, the diseases that utilize, such as chronic obstructive Lung disease, diseases of cardiovascular and cerebrovascular systems, diabetes, cervical spondylopathy etc., had both made the oxygen content in air normal, it is also possible to cause anoxic Symptom, such case is referred to as endogenous anoxic；Due to environmental factor, such as people is in the plateau of rarefaction of air or stayed in for a long time Closed space and the place of improper ventilation, due to atmosphere draught-free, add the continuous consumption of oxygen in space, cause relative Oxygen content is low, and such case is referred to as exogenous anoxic.

Exogenous anoxic is completely preventable, for example strengthens the ventilation of living environment, improves the ecological environment, can Improve the quality of indoor air；But only the oxygen levels of exact knowledge living environment, are only possible to take Improving Measurements in time, Therefore, the oxygen content monitoring of living environment is the important step for preventing exogenous anoxic.

Currently, mainly there are two class oxygen detection instruments on the market：A is portable personal gas detecting and alarming instrument, for example The oxygen gas detector of Dong Ying Neng Science and Technology Ltd.s of Shenzhen, it is adaptable to continuous detection oxygen in industrial and mining enterprises' surrounding air The percent concentration of gas, when ambient concentration is higher or relatively low, carries out high limit, lower bound sound, light, vibrations alarm, the live people of warning Member withdraws danger zone as early as possible；A is online oxygen detection instrument, for example Electronic Science and Technology Co., Ltd. of deep Guoan of Shenzhen The online oxygen detection instrument of SGA-500B-O2 types, it is adaptable to medical scientific research, Scientific Research Activities, pharmaceutical manufacturing workshop, tobacco company, Environment measuring, building construction, fire protection warning, sewage disposal, petroleum and petrochemical industry, chemical plant, smeltery, steel plant, coal factory, thermoelectricity Factory, boiler room, gas station, destructor plant, constructing tunnel, oil pipeline, Aero-Space, industrial gasses process control, interior Detection of Air Quality, underground gas pipeline maintenance, hazardous area security protection, military equipment detection etc..

Generally speaking, above-mentioned two classes oxygen detection instrument applicable surface is wide, powerful, but specific aim is poor, and price is held high relatively It is expensive；Therefore, it is necessary to specifically designed for northern area, the window closing of winter cold room is warming, and because of reasons such as haze weathers Living environment is closed to reduce infringement of the haze to body, and the oxygen content of living environment air may be caused to drop to 19% safety The unfavorable scene such as limit value, designs a suitable for oxygen content monitoring and anoxic warning device under normal temperature living environment, improves people Room healthiness condition.

By retrieval, following related publication is found：

Environmental hypoxia monitoring alarm apparatus (CN201072413Y), including oxygen concentration sensor, signal amplifier and ratio Compared with device, the oxygen concentration sensor uses aeration cell, and signal amplifier uses INA122PA instrument amplifiers, oxygen electricity The signal output in pond terminates the signal input part of INA122PA instrument amplifiers, the output termination of INA122PA instrument amplifiers One input of comparator, another input termination comparison signal, the output end output control signal of comparator of comparator.

The shortcoming of above-mentioned patent is：Indoor temperature, the influence of pressure are not accounted for, the oxygen content measured is inaccurate.

Utility model content

The purpose of this utility model is to overcome in place of the deficiencies in the prior art that there is provided one kind is accurate, reliable, easy to use The monitoring of room anoxic content and anoxic alarm.

The utility model solves the technical scheme that is used of technical problem：

A kind of room anoxic content monitoring and anoxic alarm, including single-chip microcomputer, oxygen concentration sensor, single-chip microcomputer pass through Its A/D converter is connected with voltage conversion and signal amplification circuit module, voltage conversion and signal amplification circuit module connection oxygen Gas concentration sensor, single-chip microcomputer is connected by its SPI serial communication interface with temperature, pressure single-chip integration transmitter, temperature, pressure Power single-chip integration transmitter connects voltage conversion and signal amplification circuit module, and single-chip microcomputer connects liquid crystal by its liquid crystal driver Display, liquid crystal display connection audible and visual alarm circuit module, the I/O output interfaces that audible and visual alarm circuit module passes through single-chip microcomputer Single-chip microcomputer is connected, audible and visual alarm circuit module connection keyboard, keyboard connects single-chip microcomputer, electricity by the I/O input interfaces of single-chip microcomputer Pond power supply connects single-chip microcomputer, keyboard and temperature, pressure single-chip integration transmitter respectively.

Moreover, described single-chip microcomputer is serial 16 super low power consuming single chip processors of MSP430.

Moreover, described temperature, air pressure single-chip integration transmitter produce for Infineon, model DPS310.

Advantage of the present utility model and good effect are：

(1) the indoor environment temperature of detection and air pressure while oxygen concentration in monitoring indoor air, and pass through oxygen The temperature correction curve and atmospheric pressure fair curve that concentration sensor manufacturer provides are modified to actual measurement, effectively The influence of weather, season and height above sea level to actual measurement is reduced, so that, it can more accurately monitor oxygen in indoor air dense Degree.

(2) three-level alarm mechanism is used：Three-level is set to 19%, represents that room oxygen concentration falls below minimum safety limit Value；Two grades are set to 18%, represent that room oxygen concentration has been lowered to dangerous values；One-level is set to 16%, represents room oxygen concentration It is too low, have been enter into anaerobic condition；Coordinate different sound and light alarm effects, convenience and friendly that increase instrument is used simultaneously.

(3) it is single chip integrated using super low-power consumption and serial 16 single-chip microcomputers of the MSP430 of high integration and temperature, air pressure Transmitter, work period and high performance-price ratio when realizing high reliability and be long.

Brief description of the drawings

Fig. 1 is circuit block diagram of the present utility model.

Embodiment

Below in conjunction with the accompanying drawings and the utility model is described in further detail by specific embodiment, following examples are to retouch The property stated, be not limited, it is impossible to limit protection domain of the present utility model with this.

A kind of room anoxic content monitoring and anoxic alarm, including the single chip integrated pick-up of single-chip microcomputer 3, temperature, air pressure Device 4, oxygen concentration sensor 1, single-chip microcomputer are connected 2, electricity with voltage conversion and signal amplification circuit module by its A/D converter Pressure conversion and signal amplification circuit module connection oxygen concentration sensor；Single-chip microcomputer by its SPI serial communication interface and temperature, Pressure single-chip integration transmitter is connected, temperature, pressure single-chip integration transmitter connection voltage conversion and signal amplification circuit module； Single-chip microcomputer connects liquid crystal display 8, liquid crystal display connection audible and visual alarm circuit module 7, acousto-optic announcement by its liquid crystal driver Alert circuit module connects single-chip microcomputer by the I/O output interfaces of single-chip microcomputer, and audible and visual alarm circuit module connection keyboard 6, keyboard leads to The I/O input interfaces connection single-chip microcomputer of single-chip microcomputer is crossed, battery supply 5 connects single-chip microcomputer, keyboard and temperature, pressure monolithic respectively Integrated transmitter, is its power supply.

Described single-chip microcomputer is serial 16 super low power consuming single chip processors of MSP430.Described temperature, air pressure single-chip integration become Send what device was produced for Infineon, model：DPS310.

Operation principle of the present utility model is：

Indoor air oxygen concentration is transformed to proportional current electrical signal by this alarm using oxygen concentration sensor Output, 12 integrated A/D converters of input single-chip microcomputer, are converted to after voltage conversion and the conditioning of signal amplification circuit module Digital quantity reads in single-chip microcomputer internal memory, and environment temperature and atmospheric pressure are then directly converted by temperature, the single chip integrated transmitter of air pressure For digital quantity, internal memory is read in by the SPI serial communication interfaces of single-chip microcomputer；Again through excess temperature, atmospheric pressure compensating algorithm and proportionality coefficient Measured oxygen concentration value is obtained after adjustment, liquid crystal driver integrated in single-chip microcomputer is output to, liquid crystal display battle array is finally lighted Row, show oxygen content；Meanwhile, measured oxygen concentration value can also compare computing, actual oxygen concentration measurement in single-chip microcomputer Value is compared with keyboard oxygen concentration lower limit value set in advance, when measured value is less than the lower limit value of setting, is further led to The buzzer, LED flash and liquid crystal display numerical value for crossing audible and visual alarm circuit module show etc. that mode sends alarm Signal, reminds people to take measures to improve the oxygen general level of the health in room in time.

Described proportionality coefficient refer to by oxygen amount sensor technology handbook provide measurement maximum oxygen amount percentage with The ratio between maximum measurement digital value, i.e. unit oxygen amount value.Number of actual measurements word value is multiplied by unit oxygen amount during monitoring it is worth to oxygen and contains Measurement.

Described backoff algorithm refers to that the temperature correction curve for providing oxygen amount sensor technology handbook and air pressure amendment are bent Tables of data is made in program curing while the Flash internal memories of single-chip microcomputer are stored in, by tabling look-up to measurement of oxygen content during monitoring in line Value is compensated.For disclosed algorithm.

Above-described is only preferred embodiment of the present utility model, it is noted that for the ordinary skill of this area For personnel, on the premise of utility model design is not departed from, various modifications and improvements can be made, these belong to this reality With new protection domain.

Claims (3)

1. a kind of room anoxic content monitoring and anoxic alarm, including single-chip microcomputer, oxygen concentration sensor, single-chip microcomputer pass through it A/D converter is connected with voltage conversion and signal amplification circuit module, voltage conversion and signal amplification circuit module connection oxygen Concentration sensor, it is characterised in that：Single-chip microcomputer is connected by its SPI serial communication interface and temperature, pressure single-chip integration transmitter Connect, temperature, pressure single-chip integration transmitter connection voltage conversion and signal amplification circuit module, single-chip microcomputer pass through its liquid crystal drive Device connects liquid crystal display, and liquid crystal display connection audible and visual alarm circuit module, audible and visual alarm circuit module passes through single-chip microcomputer I/O output interfaces connect single-chip microcomputer, and audible and visual alarm circuit module connection keyboard, keyboard is connected by the I/O input interfaces of single-chip microcomputer Single-chip microcomputer is connect, battery supply connects single-chip microcomputer, keyboard and temperature, pressure single-chip integration transmitter respectively.

2. room anoxic content monitoring according to claim 1 and anoxic alarm, it is characterised in that：Described single-chip microcomputer For serial 16 low-power scms of MSP430.

3. room anoxic content monitoring according to claim 1 and anoxic alarm, it is characterised in that：Described temperature, Air pressure single-chip integration transmitter produces for Infineon, model DPS310.