CN203869726U - Humiture and smoke monitoring system - Google Patents

Humiture and smoke monitoring system Download PDF

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Publication number
CN203869726U
CN203869726U CN201420200149.XU CN201420200149U CN203869726U CN 203869726 U CN203869726 U CN 203869726U CN 201420200149 U CN201420200149 U CN 201420200149U CN 203869726 U CN203869726 U CN 203869726U
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China
Prior art keywords
humiture
circuit
smoke
sensor
monitoring system
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Expired - Fee Related
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CN201420200149.XU
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Chinese (zh)
Inventor
王晓兰
黄英
李忠美
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Suzhou Institute of Trade and Commerce
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Suzhou Institute of Trade and Commerce
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Priority to CN201420200149.XU priority Critical patent/CN203869726U/en
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Abstract

The utility model discloses a humiture and smoke monitoring system which comprises the components of: a humiture detecting circuit, a smoke detecting circuit, a signal processing circuit, an alarm circuit and a fan control circuit. Indoor humiture information is acquired through a humiture sensor; and a gas sensor acquires smoke gas concentration information in a compartment. A liquid crystal display outputs and displays the humiture information and the smoke concentration information which are processed by a single-chip microcomputer. The fan control circuit is switched on and switched off according to the environment in the compartment. The humiture and smoke monitoring system can realize functions of: acquiring compartment humiture and smoke, displaying, alarming, etc. Furthermore the fan can be started for discharging the smoke when an emergency occurs. The humiture and smoke monitoring system has advantages of: stable performance, high accuracy and strong expansibility.

Description

A kind of humiture and smoke monitoring system
Technical field
The utility model relates to DATA REASONING and control field, particularly a kind of humiture and smoke monitoring system.
Background technology
In fields such as storage and public transport, safety is the first element that will consider all the time.The motor-car of China is built so far only many decades, and existing a large amount of train numbers are with the state operation of 350 kilometers of speed per hours at present.Motor train unit train is high in technological content, involve great expense, and easily causes a tremendous loss of lives, and lose huge once meet accident.Same, storage stores lot cargo in space, and some goods have strict requirement for the humiture of storage, and also have some goods to have inflammable and explosive risk.Therefore, set up humiture and smoke monitoring system is particularly important.
In order to reach real-time monitoring, risk is dropped to minimum, we need a kind of humiture cheap, easy to use and smoke monitoring system.
Utility model content
The utility model, for prior art above shortcomings, provides a kind of humiture and smoke monitoring system.The utility model is achieved through the following technical solutions:
A kind of humiture and smoke monitoring system, comprising:
Humiture testing circuit, comprises Temperature Humidity Sensor and sensor chip, and Temperature Humidity Sensor and sensor chip connect by two-wire system, respectively serial clock interface and the data-interface of temperature sensor is connected to sensor chip;
Smoke Detection circuit, comprise smokescope sensor and the pull-up resistor of series connection, smokescope sensor is the lower two-way voltage that connects in working order, one road voltage is heater voltage, in order to maintain the specified temp of responsive sub-prime in adapting with smog and to be applied on the well heater of smokescope sensor, another road voltage is loop voltage, in order to the voltage of 2 of sensing lead resistance;
Signal processing circuit, connect humiture testing circuit and Smoke Detection circuit, signal processing circuit comprises a high-gain inverting amplifier, the input end of high-gain inverting amplifier connects a quartz oscillator, the output terminal of high-gain inverting amplifier connects trimmer, forms a stable self-excited oscillator;
Warning circuit, connects signal processing circuit, in order to send alerting signal in the time detecting that humiture or smokescope exceed preset range;
Fan control circuitry, connects signal processing circuit, and fan control circuitry comprises a triode and fan, the emitter of fan connecting triode, and the base stage of triode connects signal processing circuit.
Preferably, also comprise a display circuit, the humiture collecting in order to demonstration and the value of smokescope.
Preferably, in the time detecting that humiture or smokescope exceed preset range, sending alerting signal comprises: detect temperature exceed 50 degrees Celsius or lower than 10 degrees Celsius, humidity higher than 60% or lower than 10%, or smokescope is sent alerting signal during higher than 1ppm, and start fan.
Preferably, fan adopts direct current generator to drive, so that rotating speed control.
Humiture information, gas sensor that the utility model utilizes Temperature Humidity Sensor to gather in compartment gather the smog gas concentration information in compartment, and liquid crystal display is by humiture after treatment single-chip microcomputer and smokescope information output display.Fan control circuitry carries out opening and closing according to environment in compartment.This system realizes collection, the demonstration to compartment humiture and smog, the functions such as warning, and in the time meeting accident, can start fan smoke evacuation mist, and this system performance is stable, and degree of accuracy is high, and scalability is very powerful.This system can also apply to the departments such as commercial production, environment measurement, the custody of goods.
Brief description of the drawings
Shown in Fig. 1 is structural representation of the present utility model;
Shown in Fig. 2 is the circuit diagram of signal processing circuit;
Shown in Fig. 3 is the circuit diagram of humiture testing circuit;
Shown in Fig. 4 is the circuit diagram of Smoke Detection circuit;
Shown in Fig. 5 is the circuit diagram of display circuit;
Shown in Fig. 6 is the circuit diagram of warning circuit;
Shown in Fig. 7 is the circuit diagram of fan control circuitry.
Embodiment
Below with reference to accompanying drawing of the present utility model; technical scheme in the utility model embodiment is carried out to clear, complete description and discussion; obviously; as described herein is only a part of example of the present utility model; it is not whole examples; based on the embodiment in the utility model, the every other embodiment that those of ordinary skill in the art obtain under the prerequisite of not making creative work, belongs to protection domain of the present utility model.
For the ease of the understanding to the utility model embodiment, be further explained as an example of specific embodiment example below in conjunction with accompanying drawing, and each embodiment does not form the restriction to the utility model embodiment.
As shown in Figure 1, a kind of humiture that the utility model provides and smoke monitoring system, comprising: humiture testing circuit 1, Smoke Detection circuit 2, signal processing circuit 3, warning circuit 4, fan control circuitry 5 and display circuit 6.
As shown in Figure 2, signal processing circuit 3 inside have one, and for forming the high-gain inverting amplifier of oscillator, its input end is chip pin XTAL1, and output terminal is XTAL2.These two pin cross-over connection quartz oscillator X1 and trimming capacitor C 1, C2, form a stable self-excited oscillator.C1 in circuit and the value of C2 are 30pF.The circuit that in figure, RST connects is reset circuit.This method of attachment of this circuit just can make circuit reset after powering on, so be called electrify restoration circuit.Electrification reset is to realize by the capacitor charging of external reset circuit.EA connects high level, and this pin can not be unsettled.
As shown in Figure 3, humiture testing circuit 1 comprises Temperature Humidity Sensor and sensor chip, humiture testing circuit 1 use SHT15 Temperature Humidity Sensor, its maximum feature is the advantages such as strong, the high cost performance of quality brilliance, super fast response, antijamming capability.Each sensor chip is demarcated in very accurate humidity chamber, and calibration factor is stored in OTP internal memory with program form, in the process of demarcating, uses.Sensor will call these calibration factors in the processing procedure of detection signal.The serial line interface of two-wire system and inner voltage adjustment, make integrated the becoming fast of peripheral system and simple.The power consumption that small volume is extremely low, collecting temperature and humidity simultaneously, is easy to application, simple to operate.Temperature Humidity Sensor and sensor chip connect by two-wire system, wherein serial clock interface SCK meets P1.0, data-interface DATA meets P1.1, after program detection SHT15 exists, it is carried out to data transformation operations, time delay, realization temperature, humidity conversion, carry out again the operation store of data, finally read temperature, humidity and realize the sampling of temperature, humidity.
As shown in Figure 4, Smoke Detection circuit, comprises smokescope sensor and the pull-up resistor of series connection, and smokescope sensor need to apply two voltages: heater voltage V1 and loop voltage V2.V1 is applied to integrated well heater for maintaining the specified temp of responsive sub-prime in adapting with object gas.V2 is for measuring the both end voltage VA on the pull-up resistor R connecting with sensor.After program detection, it is carried out that data are changed, time delay, realizes the conversion of smokescope, then carry out the storage of data, finally read smokescope and realize the collection of smokescope.Smog is mainly CO2 and CO.Semiconductor gas sensor can be surveyed the multiple gases such as CO2, CO, methane, coal gas, and he is highly sensitive, and good stability is suitable for the detection of gas in fire.While detecting CO2 or CO as TGS202 gas sensor, the internal resistance of sensor diminishes, and VA rises rapidly.Select suitable resistance, make in the time that gas concentration acquires a certain degree (as CO concentration reaches 0.06%), VA end obtains suitable voltage.
As shown in Figure 5, display circuit 6 can adopt LM016L chip of LCD, and this chip can show 16 × 2 characters, more much more in the quantity that shows character than former seven segment digital tubes light-emitting diode display.And require the numerical value of LM016L to synchronize with the demonstration on SHT15.LM016L liquid crystal has been realized good control in this problem of simultaneous display.7 pin to 14 pin of LM016L are connected on pull-up resistor, ensure the working power of liquid crystal display.The power supply of pull-up resistor will enough be used simultaneously, to guarantee liquid crystal demonstration always.1 pin, 3 pin and 5 pin ground connection, 2 pin connect power supply.The same with on exclusion of power requirement on 2 pin.4 pin, 6 pin connect P2 mouth, the temperature reading of sending here for receiving singlechip chip.The step that LCDs obtains humiture and smokescope is: wait for SHT15 and smog acquisition module delay pulse, write command, write data, show character amount, display string, time delay.In addition, because LM016L chip programming is fairly simple, objective interface, is therefore easy to user's operation and observation more.
As shown in Figure 6, warning circuit 4 is used four light emitting diodes, a triode and a hummer.The amplification of NPN type triode is: collector current is subject to the control (supposing that power supply can offer enough large electric currents of collector) of base current, and the variation that base current is very little, can cause the variation that collector current is very large, and change and meet certain proportionate relationship: the variable quantity of collector current is β times of base current variable quantity, be that curent change has been exaggerated β doubly, so we are called the enlargement factor of triode β, (β is generally much larger than 1, for example tens, hundreds of).If we are added to base stage with between emitter by the small-signal of a variation, this will cause the variation of base current Ib, after the variation of Ib is exaggerated, has caused the very large variation of Ic.If collector current Ic flows through a resistance R, can calculate according to voltage computing formula U=R*I so, on this resistance, voltage will change a lot.We take out this ohmically voltage, have just obtained the voltage signal after amplifying.This circuit has been realized temperature control during at 0-100% at 0-120 DEG C, humidity, all accesses P3 mouth, and 10 foot control upper temperature limit processed is reported to the police, and 11 foot control lowest temperature processed is reported to the police, top limit of humidity warning processed of 12 foot control, 13 pin controlled humidity lower limits warnings.We can limits in to four and define in when programming: setting D4 is that upper temperature limit is reported to the police, and D1 is that lowest temperature is reported to the police, and D2 is that top limit of humidity is reported to the police, and D3 is the warning of humidity lower limit, and smokescope is reported to the police higher than 1ppm.And any one is luminous in D1-D4, hummer is all worked.
As shown in Figure 7, fan control circuitry 5 utilizes triode to play rectification, filtering, enlarging function, utilizes merely power supply cannot allow machine operation, therefore needs outer member to amplify power supply.The motor part of fan is connected on the emitter of triode, is also transmitted temperature, humidity value and then controlled electric machine rotation by single-chip microcomputer.Electric machine rotation is mainly divided into several situations: in the time that temperature exceedes 50 DEG C, and motor rotation, D4 is bright; In the time that humidity exceedes 60%, motor rotation, D2 is bright; When temperature is during lower than 10.0 DEG C, motor rotation, D1 is bright; When humidity is lower than 10.0% time, motor rotation, D3 is bright.
Humiture information, gas sensor that the utility model utilizes Temperature Humidity Sensor to gather in compartment gather the smog gas concentration information in compartment, and liquid crystal display is by humiture after treatment single-chip microcomputer and smokescope information output display.Fan control circuitry carries out opening and closing according to environment in compartment.This system realizes collection, the demonstration to compartment humiture and smog, the functions such as warning, and in the time meeting accident, can start fan smoke evacuation mist, and this system performance is stable, and degree of accuracy is high, and scalability is very powerful.This system can also apply to the departments such as commercial production, environment measurement, the custody of goods.
The above; it is only preferably embodiment of the utility model; but protection domain of the present utility model is not limited to this; any be familiar with those skilled in the art the utility model disclose technical scope in; the variation that can expect easily or replacement, within all should being encompassed in protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of claim.

Claims (3)

1. humiture and a smoke monitoring system, is characterized in that, comprising:
Humiture testing circuit, comprise Temperature Humidity Sensor and sensor chip, described Temperature Humidity Sensor and described sensor chip connect by two-wire system, respectively the serial clock interface of described Temperature Humidity Sensor and data-interface are connected to described sensor chip;
Smoke Detection circuit, comprise smokescope sensor and the pull-up resistor of series connection, described smokescope sensor is the lower two-way voltage that connects in working order, one road voltage is heater voltage, in order to maintain the specified temp of responsive sub-prime in adapting with smog and to be applied on the well heater of described smokescope sensor, another road voltage is loop voltage, in order to measure the voltage of 2 of described pull-up resistors;
Signal processing circuit, connect described humiture testing circuit and described Smoke Detection circuit, described signal processing circuit comprises an inverting amplifier, the input end of described inverting amplifier connects a quartz oscillator, the output terminal of described inverting amplifier connects trimmer, forms a stable self-excited oscillator;
Warning circuit, connects described signal processing circuit, in order to send alerting signal in the time detecting that humiture or smokescope exceed preset range;
Fan control circuitry, connects described signal processing circuit, and described fan control circuitry comprises a triode and fan, and described fan connects the emitter of described triode, and the base stage of described triode connects described signal processing circuit.
2. humiture according to claim 1 and smoke monitoring system, is characterized in that, also comprises a display circuit, the humiture collecting in order to demonstration and the value of smokescope.
3. humiture according to claim 1 and smoke monitoring system, is characterized in that, described fan adopts direct current generator to drive, so that rotating speed control.
CN201420200149.XU 2014-04-23 2014-04-23 Humiture and smoke monitoring system Expired - Fee Related CN203869726U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420200149.XU CN203869726U (en) 2014-04-23 2014-04-23 Humiture and smoke monitoring system

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Application Number Priority Date Filing Date Title
CN201420200149.XU CN203869726U (en) 2014-04-23 2014-04-23 Humiture and smoke monitoring system

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103968890A (en) * 2014-04-23 2014-08-06 苏州经贸职业技术学院 Temperature, humidity and smoke monitoring system
CN106679725A (en) * 2017-01-06 2017-05-17 四川克瑞斯航空科技有限公司 Flyable device for detecting environment index in industrial production area

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103968890A (en) * 2014-04-23 2014-08-06 苏州经贸职业技术学院 Temperature, humidity and smoke monitoring system
CN106679725A (en) * 2017-01-06 2017-05-17 四川克瑞斯航空科技有限公司 Flyable device for detecting environment index in industrial production area

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20141008

Termination date: 20160423

CF01 Termination of patent right due to non-payment of annual fee