CN205428131U - In -car temperature and gaseous detection alarm - Google Patents
In -car temperature and gaseous detection alarm Download PDFInfo
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- CN205428131U CN205428131U CN201620184390.7U CN201620184390U CN205428131U CN 205428131 U CN205428131 U CN 205428131U CN 201620184390 U CN201620184390 U CN 201620184390U CN 205428131 U CN205428131 U CN 205428131U
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- temperature
- vehicle interior
- oxygen concentration
- detection alarm
- gas detection
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Abstract
The utility model relates to an in -car temperature and gaseous detection alarm, including the data processing unit and link to each other rather than the electrical property be used for measuring in -car temperature the temperature data collection unit, be used for measuring the car in oxygen concentration's oxygen concentration acquisition unit, the alarm display unit that distress signal was sent in the use of emergency alarm, the switch element that is used for switching different operating condition. The utility model discloses small, easy operation, stable performance, the family that be applicable to school's school bus, has children and the old man use that needs the car.
Description
Technical field
The utility model relates to vehicle human oriented design field, particularly a kind of vehicle interior temperature and gas detection alarm.
Background technology
Along with popularizing of automobile, the security incident of personnel increases by bus, and the risk that especially weak population comes to harm is bigger.In recent years, children, old man are detained in car for a long time, and the example of threat to life health is of common occurrence.On the one hand, in summer, automobile is under parked state, and vehicle interior temperature is too high, long-time be detained car in people can be caused to be dehydrated, heatstroke；In the winter time, too low at vehicle interior temperature, people can cause frostbite, catch cold in staying car for a long time；On the other hand, anoxic in long-time closed environment can cause car.These situations, for lacking discriminating power, handicapped disadvantaged group, are extremely dangerous.
As school bus, have children and old man home-use car in, be required for the safeguard protection in terms of these, and lack this type of protection device on the market.So, design one can detect vehicle interior temperature and oxygen concentration, can in high temperature, low temperature condition and car anaerobic condition automatic alarm, the device reminding other people to sue and labour is the most significant.
Summary of the invention
In view of this, the purpose of this utility model is to provide vehicle interior temperature and gas detection alarm, can in high temperature, low temperature condition and car anaerobic condition automatic alarm.
The utility model uses below scheme to realize: a kind of vehicle interior temperature and gas detection alarm, specifically include data processing unit and be electrical connected with it for measure the temperature collecting cell of vehicle interior temperature, in measuring car the oxygen concentration collecting unit of oxygen concentration, the alarm indication unit sent an SOS for warning, for switching different operating state of switch unit.
Further, described data processing unit includes AT89C51 single-chip minimum system.
Further, described temperature collecting cell includes a digital temperature sensor DS18B20.
Further, described oxygen concentration collecting unit includes a zirconium oxide formula oxygen concentration sensor.
Further, described alarm indication unit includes that LED group circuit, buzzer circuit, and LM016L display circuit, described LED group circuit, buzzer circuit, and LM016L display circuit are electrical connected with described data processing unit respectively.
It is also preferred that the left described LED group circuit includes the LED of at least three kinds of colors, respectively in order to represent high temperature, low temperature and anaerobic condition.
Further, described switch element includes a photo resistance, two NPN triodes and two press buttones, and described switch element is connected with the power interface VCC of the sensor in described temperature collecting cell, oxygen concentration collecting unit.
Temperature sensor, oxygen concentration sensor and single-chip microcomputer are used in combination by the utility model, by the analysis of temperature, oxygen concentration judging, environment inside car is the most normal, are more beneficial for protecting occupant healthy；Carry out data process by single-chip microcomputer simultaneously, pass through buzzer warning, shown by liquid crystal display, and lighted by LED, both the outer personnel of car can have been reminded to sue and labour, display distress signal and car owner's essential information, it is also possible to judge the reason of abnormal condition in car by LED color, possess detection, warning and the multi-functional of standby maintenance.Additionally the utility model product selects the most frequently used element in market under meeting design requirement condition, and uses the mode that automatically processes that automatically gathers, and reduces manual operation button, has the advantages such as low cost of manufacture, easy and simple to handle, volume is little.
Accompanying drawing explanation
Fig. 1 is theory diagram of the present utility model.
Fig. 2 is temperature collecting cell circuit diagram of the present utility model.
Fig. 3 is oxygen concentration collecting unit analog circuit figure of the present utility model.
Fig. 4 is alarm indication unit LEDs lamp group of the present utility model, buzzer circuit figure.
Fig. 5 is alarm indication unit LM016L display circuit of the present utility model.
Fig. 6 is switch element circuit diagram of the present utility model.
Fig. 7 is way circuit layout drawing of the present utility model.
Detailed description of the invention
Below in conjunction with the accompanying drawings and the utility model is described further by embodiment.
As shown in Figure 1, present embodiments provide a kind of vehicle interior temperature and gas detection alarm, specifically include data processing unit and be electrical connected with it for measure the temperature collecting cell of vehicle interior temperature, in measuring car the oxygen concentration collecting unit of oxygen concentration, the alarm indication unit sent an SOS for warning, for switching different operating state of switch unit.
In the present embodiment, described data processing unit includes AT89C51 single-chip minimum system.
In the present embodiment, described temperature collecting cell includes a digital temperature sensor DS18B20.
In the present embodiment, described oxygen concentration collecting unit includes a zirconium oxide formula oxygen concentration sensor.
In the present embodiment, described alarm indication unit includes that LED group circuit, buzzer circuit, and LM016L display circuit, described LED group circuit, buzzer circuit, and LM016L display circuit are electrical connected with described data processing unit respectively.
It is also preferred that the left in the present embodiment, described LED group circuit includes the LED of at least three kinds of colors, respectively in order to represent high temperature, low temperature and anaerobic condition.
In the present embodiment, described switch element includes a photo resistance, two NPN triodes and two press buttones, and described switch element is connected with the power interface VCC of the sensor in described temperature collecting cell, oxygen concentration collecting unit.
As in figure 2 it is shown, in the present embodiment, described temperature collecting cell includes: digital temperature sensor DS18B20；After DS18B20 is initialized by single-chip microcomputer, single-chip microcomputer sends instruction, makes sensor carry out temperature transition, and single-chip microcomputer can read transformation result, and this process constantly moves in circles, it is achieved the lasting detection to temperature.
As it is shown on figure 3, in the present embodiment, described oxygen concentration collecting unit includes: zirconium oxide formula oxygen concentration sensor；Utilizing slide rheostat, triode BF337 and operational amplifier LM358 to simulate oxygen concentration collecting unit, set concentration value when oxygen concentration is more than, the live part resistance of slide rheostat is bigger, therefore base current is less, triode ends, and 2,3 mouthfuls of amplifier is all high level, output low level；When oxygen concentration is less than setting value, the live part resistance of slide rheostat is less, and base current is higher, makes triode ON, and operational amplifier+hold is low level, and-hold as high level, therefore output high level.
As shown in FIG. 4 and 5, in the present embodiment, Fig. 4 is LED group, buzzer circuit figure, and Fig. 5 is LM016L display circuit.Described alarm indication unit includes: LED group circuit, buzzer circuit and LM016L display circuit；LED group circuit and buzzer circuit use the resistant series in commoncathode, LED and resistance 200 Europe, three LED parallel connections, when single-chip microcomputer judges that temperature exceedes setting value, then send instruction, and P0.1 pin output high level, red LED lamp is bright；In like manner, it is judged that when temperature is relatively low, P0.2 pin output high level, blue led lamp is bright；Judging when oxygen concentration is low, P0.3 pin output high level, yellow LED lamp is bright.
Described buzzer circuit is 3K resistance by buzzer, resistance and triode BF337 forms；When single-chip microcomputer judges to cause danger, P0.0 will be made to export high level, base current uprises, and makes triode ON, buzzer send the sound, and under above-mentioned three kinds of dangerous situations, buzzer all can send the sound, to remind the outer personnel of car.
Described LM016L display circuit is made up of display LM016L and pull-up resistor；Single-chip microcomputer can only identify high level and low level two states, and pull-up resistor can be in the uncertain level between 0～5V, is pulled to 5V high level, and the P0 of AT89C51 single-chip microcomputer is without the pull-up resistor carried, therefore a pull-up resistor in parallel is answered when externally connected with display screen, and make system working properly, RW is reading writing signal line, during use, RW is set to 0 by all the time, carries out write operation, when judging to cause danger, display display distress signals, prompting car outer personnel sue and labour.
As shown in Figure 6, in the present embodiment, described switch element is made up of two hand switches A1, A2 and a photosensitive switch；A1 switch is master switch, control system opening and closing, and when A2 closes, photosensitive switch is inoperative, and system is completely by A1 switch control rule, and A1 closes, and monitor and alarm system whole day uses, and when without children old man in car, need to close manually；When A2 closes, photosensitive switch works, and daytime, light was relatively strong, and photo resistance resistance is low, and triode Q4 ends, and makes Q3 turn on, and sensor energy normal power supply uses；When night, dark, photo resistance resistance raises, and triode Q4 turns on, and makes Q3 end, and does not powers.Under conditions of this can be implemented in without manual-lock, night is automatically switched off, and prevents night from disturbing residents.
Concrete, Fig. 7 is way circuit layout drawing of the present utility model.
It is noted that the utility model protection is hardware configuration, do not claim as design Communication software.These are only in the utility model embodiment a preferably embodiment.But, the utility model is not limited to the embodiment above, all any impartial changes done by the utility model scheme and modifying, and when produced function is without departing from the scope of this programme, belongs to protection domain of the present utility model.
Claims (7)
1. a vehicle interior temperature and gas detection alarm, it is characterised in that: include data processing unit and be electrical connected with it for measure the temperature collecting cell of vehicle interior temperature, in measuring car the oxygen concentration collecting unit of oxygen concentration, for warning send an SOS alarm indication unit, for switching different operating state of switch unit.
A kind of vehicle interior temperature the most according to claim 1 and gas detection alarm, it is characterised in that: described data processing unit includes AT89C51 single-chip minimum system.
A kind of vehicle interior temperature the most according to claim 1 and gas detection alarm, it is characterised in that: described temperature collecting cell includes a digital temperature sensor DS18B20.
A kind of vehicle interior temperature the most according to claim 1 and gas detection alarm, it is characterised in that: described oxygen concentration collecting unit includes a zirconium oxide formula oxygen concentration sensor.
A kind of vehicle interior temperature the most according to claim 1 and gas detection alarm, it is characterized in that: described alarm indication unit includes LED group circuit, buzzer circuit, and LM016L display circuit, described LED group circuit, buzzer circuit, and LM016L display circuit is electrical connected with described data processing unit respectively.
A kind of vehicle interior temperature the most according to claim 5 and gas detection alarm, it is characterised in that: described LED group circuit includes the LED of at least three kinds of colors, respectively in order to represent high temperature, low temperature and anaerobic condition.
A kind of vehicle interior temperature the most according to claim 1 and gas detection alarm, it is characterized in that: described switch element includes a photo resistance, two NPN triodes and two press buttones, described switch element is connected with the power interface VCC of the sensor in described temperature collecting cell, oxygen concentration collecting unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620184390.7U CN205428131U (en) | 2016-03-11 | 2016-03-11 | In -car temperature and gaseous detection alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620184390.7U CN205428131U (en) | 2016-03-11 | 2016-03-11 | In -car temperature and gaseous detection alarm |
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| Publication Number | Publication Date |
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| CN205428131U true CN205428131U (en) | 2016-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620184390.7U Active CN205428131U (en) | 2016-03-11 | 2016-03-11 | In -car temperature and gaseous detection alarm |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107438103A (en) * | 2017-08-01 | 2017-12-05 | 福州大学 | Multi-level environment inside car monitor and alarm system and method based on Internet of Things |
| CN110239469A (en) * | 2019-07-02 | 2019-09-17 | 昆明理工大学 | A kind of children in vehicles's safety detection real time warning device based on LoRa transmission |
-
2016
- 2016-03-11 CN CN201620184390.7U patent/CN205428131U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107438103A (en) * | 2017-08-01 | 2017-12-05 | 福州大学 | Multi-level environment inside car monitor and alarm system and method based on Internet of Things |
| CN107438103B (en) * | 2017-08-01 | 2019-10-15 | 福州大学 | Multi-level environment inside car monitor and alarm system and method based on Internet of Things |
| CN110239469A (en) * | 2019-07-02 | 2019-09-17 | 昆明理工大学 | A kind of children in vehicles's safety detection real time warning device based on LoRa transmission |
| CN110239469B (en) * | 2019-07-02 | 2021-09-24 | 昆明理工大学 | In-car children safety detection real-time alarm device based on LoRa transmission |
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