CN110992608A - Alarm system for non-suitable living environment of closed space - Google Patents
Alarm system for non-suitable living environment of closed space Download PDFInfo
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- CN110992608A CN110992608A CN201910957309.2A CN201910957309A CN110992608A CN 110992608 A CN110992608 A CN 110992608A CN 201910957309 A CN201910957309 A CN 201910957309A CN 110992608 A CN110992608 A CN 110992608A
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
- G08B29/18—Prevention or correction of operating errors
- G08B29/185—Signal analysis techniques for reducing or preventing false alarms or for enhancing the reliability of the system
- G08B29/188—Data fusion; cooperative systems, e.g. voting among different detectors
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B3/00—Audible signalling systems; Audible personal calling systems
- G08B3/10—Audible signalling systems; Audible personal calling systems using electric transmission; using electromagnetic transmission
- G08B3/1008—Personal calling arrangements or devices, i.e. paging systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
- H04B3/544—Setting up communications; Call and signalling arrangements
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Abstract
The invention discloses an alarm system for an unfavorable living environment of a closed space, which comprises a microprocessor, and a data acquisition unit, an AD conversion module, an external communication unit, an alarm unit, a key unit, a display screen, a steering engine and a power supply which are connected with the microprocessor, wherein the data acquisition unit converts analog information into digital information through the AD conversion module and transmits the digital information to the microprocessor, the data acquisition unit comprises an environment detection unit and a person detection unit, and the power supply supplies power to the whole system. The alarm has the advantages of scientific structure, easy implementation, overcoming the defects of the current popular alarm, having humanized function, timely providing oxygen, CO, temperature and the like which relate to living environment indexes when the life safety is dangerous, and detecting and alarming whether people are involved or not by sound, light, infrared and the like, being more accurate, reducing the false alarm rate and realizing quick, effective, remote, automatic and intelligent alarming. The alarm of the invention automatically calls the contact person for rescue, thereby improving the rescue success rate.
Description
Technical Field
The invention belongs to an alarm system for a non-suitable living environment of a closed space, and relates to an alarm system for a non-suitable living environment in a vehicle or other closed spaces.
Background
With the development of social economy and the continuous improvement of the living standard of people, more and more automobiles are available. However, in recent years, automobile accidents are increasing, and accidents such as unexpected death of people in automobiles, especially children, and explosion caused by overhigh temperature in automobiles cause great loss of lives and properties of people, and threaten social stability. It is therefore necessary to provide an in-vehicle safety warning system.
At present, a vehicle-mounted CO alarm sends out a corresponding control signal according to CO depth detection and sends out a corresponding alarm and help seeking signal, so that disasters caused by CO gas leakage can be effectively avoided. But the effect it is to achieve has many disadvantages. First, it is primarily directed to the abnormal alarming of CO in the environment, not to the life-safe rescue. The system cannot effectively contact the car owner and related personnel, and adopts the most direct and effective rescue mode. (reference:
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infrared integrated gas sensor design [ J]Hujiaming, Ningping, Zhangjianghong, Yang hong fei, electronic technology and software engineering 2015(03)
Disclosure of Invention
In order to solve the defects of the prior art, solve the detection and alarm of the unsuitable living environment of the closed space and provide information for first aid, the invention provides an alarm system of the unsuitable living environment of the closed space.
The alarm system for the unconformable living environment of the closed space comprises a microprocessor, and a data acquisition unit, an AD conversion module, an external communication unit, an alarm unit, a key unit, a display screen, a steering engine and a power supply which are connected with the microprocessor, wherein the data acquisition unit converts analog information into digital information through the AD conversion module and transmits the digital information to the microprocessor, the data acquisition unit comprises an environment detection unit and a person detection unit, and a double-deer carbon 9V power supply is adopted to supply power to the whole system;
the software program of the invention is stored and operated in the microprocessor, the logic sequence is that the microprocessor firstly receives the detection information sent by each detection module of the environment detection unit, displays the detection information on the display screen, respectively compares the detection information with the threshold value of the detection data of each module input by the key unit, and continues the detection if the detection data does not exceed the threshold value range; if the detection data exceed the threshold range, further receiving each detection data of the person detection unit, judging whether a person exists, if no person exists, continuing to detect the information of each detection module of the environment detection unit, and if a person exists, instructing to drive a steering engine to pull an alarm rope to drive an alarm unit to send out related alarm information to the outside; the microprocessor is required to have high processing speed and anti-interference capability in data processing and control, and a chip with low loss is selected for saving energy, preferably a TMS320F28335 single chip microcomputer;
the key module is used for inputting or adjusting related information through the key module and setting or adjusting the alarm threshold value; the setting of timing arming and timing disarming can be realized through the key module, and the switch of specific detection items is realized.
The environment detection unit comprises an oxygen concentration detection module, a CO concentration detection module and a temperature detection module and is used for detecting whether the environment indexes are suitable for survival;
the oxygen concentration detection module detects the oxygen concentration value in the vehicle through the oxygen concentration sensor and transmits the detected oxygen concentration value to the microprocessor;
the temperature detection module detects the temperature value in the vehicle through a temperature sensor and transmits the detected temperature value to the microprocessor;
the CO concentration detection module detects the CO concentration value in the vehicle through a CO concentration sensor and transmits the detected CO concentration value to the microprocessor;
the person detection unit comprises an infrared detection module, a photosensitive detection module and a sound sensitive detection module and is used for detecting whether a person exists or not;
the infrared detection module detects an infrared detection value in the vehicle through an infrared induction sensor of a human body and sends the detected infrared detection value to the microprocessor;
the sound sensitive detection module detects the sound information value in the vehicle through the sound sensitive sensor and sends the detection value to the microprocessor;
the photosensitive resistance sensor module detects the light information value in the vehicle through the photosensitive sensor and sends the detected value to the microprocessor;
if the person in the vehicle is still in a conscious state, corresponding distress action and distress call can be sent out, so that the photosensitive and acoustic resistance module can judge that the person in the vehicle exists, and if the person in the vehicle is unconscious or does not have speech or action capacity, the infrared detection module can still detect;
the display screen displays all the detection information in real time;
the steering engine is a servo mechanism, and after receiving an alarm instruction of the microprocessor, the steering engine pulls the alarm rope to drive the alarm unit to send out related alarm information to the outside;
the buzzer of the alarm unit is arranged on the circuit board of the single chip microcomputer. The singlechip sends level to the LED lamp after processing the signal to control whether to light or not. The singlechip sends level to the buzzer after processing signals to control whether the buzzer sounds or not. The alarm device automatically sends out related alarm information under the instruction of the microprocessor, dials the telephone of a vehicle owner or related contact persons and sends a short message for alarming to the outside through a carrier based on a power line of a power grid through an external communication unit, telephone numbers of a plurality of contact persons are reserved in the unit in advance, and the alarm device dials and calls for help in the sequence of the reserved numbers until the call is made.
The external communication unit adopts a power line carrier communication module to transmit information outwards in real time, adopts carrier communication based on a power line of a power grid, and has the biggest difference from other communication modes that a line is not designed for communication any more, but communication is directly carried out through a distribution line of a user in the power grid, so that the expenditure and the time are saved;
preferably, a power line carrier communication module is purchased and specially designed for 220V distribution lines, namely a power line carrier module KQ130F, so that the power line carrier communication module is strong in attenuation resistance and interference resistance, good in stability and capable of realizing long-distance transmission;
has the advantages that: the alarm system for the non-living environment in the closed space is scientific in structure and easy to implement, overcomes the defects of the existing popular alarm, and has a humanized function. Can in time provide oxygen, CO, temperature etc. when life safety receives danger and relate to the living environment index to and whether sound, light, infrared etc. relate to someone and detect and report to the police, report to the police more accurately, can reduce the false alarm rate, realize quick effective, remote, automatic and intelligent warning. The alarm of the invention automatically calls the contact person for rescue, thereby improving the rescue success rate.
Drawings
Fig. 1 is a block diagram showing the construction of an alarm system for an unfavorable living environment of an enclosed space according to the present invention.
Fig. 2 is a flow chart of the present invention.
FIG. 3 is a schematic view of a steering engine.
Detailed Description
Embodiment 1 is as shown in fig. 1, an alarm system for an unfavorable living environment of a closed space comprises a microprocessor, and a data acquisition unit, an AD conversion module, an external communication unit, an alarm unit, a key unit, a display screen, a steering engine and a power supply which are connected with the microprocessor, wherein the data acquisition unit converts analog information into numerical information through the AD conversion module and transmits the numerical information to the microprocessor, the data acquisition unit comprises an environment detection unit and a person detection unit, and a double-deer carbon 9V power supply is adopted to supply power to the whole system;
the software program of the invention is stored and operated in the microprocessor, the logical sequence is that detection information sent by each detection module of the environment detection unit is received firstly and displayed on the display screen, the detection data are compared with the threshold value of the detection data of each module input by the key unit respectively, the detection data do not exceed the threshold value range, the detection of each detection module of the environment detection unit is continued, if the detection data exceed the threshold value range, each detection data of the person detection unit is further received, whether the information exists or not is judged, if no person exists is judged, the information detection of each detection module of the environment detection unit is continued, and if the person exists, the steering engine is instructed to drive the alarm rope to drive the alarm unit to send out related alarm information to the outside;
the microprocessor is required to have high processing speed and anti-interference capability in data processing and control, and a chip with low loss is required to be selected in order to save energy, and the TMS320F28335 single chip microcomputer is selected by the microprocessor;
as shown in fig. 2, the software program is as follows:
proceeding to step 125, driving an alarm;
proceed to step 130 and end.
The key module is used for inputting or adjusting related information through the key module and setting or adjusting the alarm threshold value; the setting of timing arming and timing disarming can be realized through the key module, and the switch of specific detection items is realized.
The environment detection unit comprises an oxygen concentration detection module, a CO concentration detection module and a temperature detection module and is used for detecting whether the environment indexes are suitable for survival;
the oxygen concentration detection module detects the in-vehicle oxygen concentration value through a purchased Hima AS8801 oxygen detector of Wan Dongguan electronic product Co., Ltd and transmits the detected oxygen concentration value to the microprocessor;
the oxygen detector of hima AS8801 of this embodiment measures the oxygen concentration by using the oxygen sensor inside the oxygen detector based on the electrochemical principle, so that the gas to be measured contacts the electrolyte solution inside the oxygen sensor through a special reticular membrane, the oxygen inside the oxygen sensor diffuses through the membrane and then reaches the vicinity of the metal electrode, the oxygen molecules and the electrolyte solution generate redox reaction under the action of the applied voltage to generate current, and the oxygen sensor outputs a current signal corresponding to the measured oxygen concentration AS long AS the oxygen concentration is within the specified range; the IO port of the bit processor is connected with an electrochemical oxygen sensor to acquire a voltage value corresponding to the oxygen concentration, then the voltage value is subjected to AD conversion and then the oxygen concentration is displayed on a display screen, meanwhile, the measured oxygen concentration is compared with a preset alarm limit value, and if the measured oxygen concentration is higher than a preset maximum limit value or lower than a preset minimum limit value, the voltage value is transmitted to a microprocessor;
the CO concentration detection module detects the CO concentration value in the vehicle through a CO concentration sensor and transmits the detected CO concentration value to the microprocessor;
the temperature detection module detects the temperature value in the vehicle through a temperature sensor and transmits the detected temperature value to the microprocessor; the temperature detection module of the embodiment adopts a temperature sensor DS18B20 of Shenzhen Kejiyewei electronics Limited, and after power is supplied, the temperature sensor can detect and display the temperature of the external environment. Supply voltage range of temperature sensor: + 3.0V- + 5.5V.
The person detection unit comprises an infrared detection module, a photosensitive detection module and a sound sensitive detection module and is used for detecting whether a person exists or not;
the infrared detection module detects an infrared detection value in the vehicle through an infrared induction sensor of a human body and sends the detected infrared detection value to the microprocessor;
the infrared detection module of the embodiment adopts an HC-SR501 human body infrared induction automatic control module produced by Shenzhen science Zhangye electronics Limited, adopts an LHI778 probe, has high sensitivity and strong reliability, is widely applied to various automatic induction devices, and has the advantages of small volume, stable working state, adjustable induction distance and convenient and simple installation. The automatic induction type high-voltage switch has the function of full-automatic induction, when a person enters the induction range, the high level is output, and when the person leaves the induction range, the high level is automatically switched off, and the low level is output. The method comprises a repeatable triggering mode and a non-repeatable triggering mode, wherein the non-repeatable triggering mode is that after a high level is output, the output is automatically changed from the high level to a low level after the delay time is over; if a person is moving within range, the output will be maintained.
The sound-sensitive detection module detects the sound-sensitive value in the vehicle through the sound-sensitive sensor and sends the detected sound-sensitive value to the microprocessor; if the person in the vehicle is still in a conscious state, corresponding sound can be produced;
the acoustic sensing detection module of the embodiment adopts a sensitive acoustic resistance sensor of Shenzhen science exhibition Weber electronics Limited and a comparator for outputting. The signal is clean, and the wave form is good, and the driving force is strong, exceeds 15mA, joins in marriage adjustable potentiometre, adjustable detection light, luminance, and operating voltage is 3.3V to 5V. The output forms are digital switch output and analog voltage output. The measurable range of the acoustic sensitive resistor is 28-68 dB, and the acoustic sensitive resistor adopts two modes of digital input and analog input, preferably a digital signal processing mode.
The photosensitive resistance sensor module detects the sound sensitivity value in the vehicle through the photosensitive sensor and sends the detected light sensitivity value to the microprocessor; the 5539 photoresistance sensor module adopting Shenzhen science Zhangwei industry electronic Limited in the embodiment adopts a sensitive photoresistance sensor, the comparator outputs light to detect the brightness of light, the working voltage is 3.3V to 5V, the output form is digital switch output or analog voltage output, the wide voltage LM393 comparator is used, the photoresistance module is used for detecting the brightness around the environment, when the brightness of the light of the environment does not reach the threshold value, a high level is output, and when the brightness of the light of the environment exceeds the set threshold value, a low level is output by a digital input end; the module is used for detecting whether organisms exist or not, and the photosensitive sensor can capture personnel shadow information and transmit the personnel shadow information to the microprocessor.
The display screen displays all the detection information in real time;
the steering engine is a servo mechanism, and after receiving an alarm instruction of the microprocessor, the steering engine pulls the alarm rope to drive the alarm unit to send out related alarm information to the outside. Specifically, as shown in fig. 3, when it is detected that a person exists, a high level signal corresponds to the high level signal, the steering engine starts to rotate at 0-180 degrees from the original 0 degrees, and rotates and resets, when the pulling angle of the steering engine exceeds 120 degrees, an alarm is generated, and the steering engine stops at 180 degrees and resets, and the resetting frequency is twice per second.
The alarm unit dials the telephone of the vehicle owner or the related contact person for alarming through the carrier based on the power line of the power grid, the telephone numbers of a plurality of contact persons are reserved in the alarm unit in advance, the alarm device dials the telephone in the order of the reserved numbers, sends the short message for calling for help and calls the call until the call is made.
The external communication unit adopts a power line carrier communication module to transmit information outwards in real time, adopts carrier communication based on a power line of a power grid, and has the biggest difference from other communication modes that a line is not designed for communication any more, but communication is directly carried out through a distribution line of a user in the power grid, so that the expenditure and the time are saved;
the power line carrier communication module adopted by the embodiment is a power line carrier module KQ130F which is specially designed for a 220V distribution line and is manufactured by Shenzhen power technology Limited company, the speed can reach 2Mbit/s, nine pins are provided, the anti-attenuation and anti-interference capability is strong, the stability is good, and the power line carrier communication module can be transmitted in a long distance.
Claims (4)
1. The alarm system for the non-living environment of the closed space is characterized by comprising a microprocessor, and a data acquisition unit, an AD conversion module, an external communication unit, an alarm unit, a key unit, a display screen, a steering engine and a power supply which are connected with the microprocessor, wherein the data acquisition unit converts analog information into digital information through the AD conversion module and transmits the digital information to the microprocessor, the data acquisition unit comprises an environment detection unit and a person detection unit, and a double-deer carbon 9V power supply is adopted to supply power to the whole system;
the software program of the invention is stored and operated in the microprocessor, the logic sequence is that the microprocessor firstly receives the detection information sent by each detection module of the environment detection unit, displays the detection information on the display screen, respectively compares the detection information with the threshold value of the detection data of each module input by the key unit, and continues the detection if the detection data does not exceed the threshold value range; if the detection data exceed the threshold range, further receiving each detection data of the person detection unit, judging whether a person exists, if no person exists, continuing to detect the information of each detection module of the environment detection unit, and if a person exists, instructing to drive a steering engine to pull an alarm rope to drive an alarm unit to send out related alarm information to the outside; the microprocessor is required to have high processing speed and anti-interference capability in data processing and control, and a chip with low loss is selected for saving energy, preferably a TMS320F28335 single chip microcomputer;
the key module is used for inputting or adjusting related information through the key module and setting or adjusting the alarm threshold value; the setting of timed arming and timed disarming can be realized through the key module, and the switching of specific detection items is realized;
the environment detection unit comprises an oxygen concentration detection module, a CO concentration detection module and a temperature detection module and is used for detecting whether the environment indexes are suitable for survival;
the oxygen concentration detection module detects the oxygen concentration value in the vehicle through the oxygen concentration sensor and transmits the detected oxygen concentration value to the microprocessor;
the temperature detection module detects the temperature value in the vehicle through a temperature sensor and transmits the detected temperature value to the microprocessor;
the CO concentration detection module detects the CO concentration value in the vehicle through a CO concentration sensor and transmits the detected CO concentration value to the microprocessor;
the person detection unit comprises an infrared detection module, a photosensitive detection module and a sound sensitive detection module and is used for detecting whether a person exists or not;
the infrared detection module detects an infrared detection value in the vehicle through an infrared induction sensor of a human body and sends the detected infrared detection value to the microprocessor;
the sound sensitive detection module detects the sound information value in the vehicle through the sound sensitive sensor and sends the detection value to the microprocessor;
the photosensitive resistance sensor module detects the light information value in the vehicle through the photosensitive sensor and sends the detected value to the microprocessor;
if the person in the vehicle is still in a conscious state, corresponding distress action and distress call can be sent out, so that the photosensitive and acoustic resistance module can judge that the person in the vehicle exists, and if the person in the vehicle is unconscious or does not have speech or action capacity, the infrared detection module can still detect;
the display screen displays all the detection information in real time;
the steering engine is a servo mechanism, and after receiving an alarm instruction of the microprocessor, the steering engine pulls the alarm rope to drive the alarm unit to send out related alarm information to the outside;
the alarm unit automatically sends out related alarm information under the instruction of the microprocessor, and dials a telephone of a pre-reserved vehicle owner or a related contact person for alarming through an external communication unit to the outside through a carrier based on a power line of a power grid;
the external communication unit transmits information to the outside in real time by adopting a power line carrier communication module and adopts carrier communication based on a power line of a power grid.
2. The alarm system for the unfavorable living environment of the closed space as claimed in claim 1, wherein the microprocessor selects the TMS320F28335 single chip microcomputer.
3. The system of claim 1, wherein the oxygen concentration detection module is a electrochemical-based oxygen detector of hima AS 8801.
4. The system of claim 1, wherein the plc module is a plc KQ130F module.
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Cited By (1)
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