CN105758529A - Safety monitoring device based on non-contact type temperature detection - Google Patents
Safety monitoring device based on non-contact type temperature detection Download PDFInfo
- Publication number
- CN105758529A CN105758529A CN201610293067.8A CN201610293067A CN105758529A CN 105758529 A CN105758529 A CN 105758529A CN 201610293067 A CN201610293067 A CN 201610293067A CN 105758529 A CN105758529 A CN 105758529A
- Authority
- CN
- China
- Prior art keywords
- monitoring device
- safety monitoring
- alarm
- device based
- control circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 36
- 238000012806 monitoring device Methods 0.000 title claims abstract description 33
- 238000004891 communication Methods 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 3
- 230000035945 sensitivity Effects 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 32
- 230000006870 function Effects 0.000 description 12
- 238000000034 method Methods 0.000 description 11
- 238000009841 combustion method Methods 0.000 description 9
- 238000013461 design Methods 0.000 description 5
- 230000004044 response Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 239000000567 combustion gas Substances 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000002737 fuel gas Substances 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000010259 detection of temperature stimulus Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000037081 physical activity Effects 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000012925 reference material Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000001931 thermography Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 230000001755 vocal effect Effects 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/0003—Radiation pyrometry, e.g. infrared or optical thermometry for sensing the radiant heat transfer of samples, e.g. emittance meter
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0428—Safety, monitoring
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Emergency Alarm Devices (AREA)
Abstract
The invention discloses a safety monitoring device based on non-contact type temperature detection.The safety monitoring device comprises a control box (1), an infrared temperature sensor (3) and a connecting piece.One end of the connecting piece is connected with the control box, the other end of the connecting piece is provided with the infrared temperature sensor, and the infrared temperature sensor is used for detecting the temperature of the outer wall of a container (9).A control circuit and a warner are arranged in the control box.If the temperature value detected by the infrared temperature sensor is higher than a preset value, warning signals are sent by the control circuit.The temperature set value is any value of 140-180 DEG C.The connecting piece is a flexible connecting pipe (2) and can freely and flexibly adjust the direction of the infrared temperature sensor.The safety monitoring device based on non-contact type temperature detection is ingenious in conception and easy to implement, can effectively protect the container such as a pot or a furnace from dry burning, and is high in sensitivity and safety.
Description
Technical field
The present invention relates to a kind of safety monitoring device based on non-contact temperature detection.
Background technology
Existing supervising device for kitchen use, the temperature adopted in temperature sensor sensing chamber more, and adopt whether infrared inductor sensing has people in kitchen, Chinese patent if publication number is 201269558 discloses a kind of fire security alarming apparatus of kitchen gas range (application number: 200820014489.8), releasing infrared sensor, radio transmitting system, multiple radio reception informing device and intelligent gas valve including temperature relay RJ1, human body sensing heat, temperature relay RJ1 is arranged near gas-cooker stove disk holder；Temperature relay RJ1 releases infrared sensor, intelligent gas valve, radio transmitting system and power supply and electrically connects composition gas monitor and control system with human body sensing heat；Multiple radio reception informing devices are respectively and fixedly installed in parlor, bedroom or physical activity is worn, and composition combustion gas situation is reminded and informed system.During fire for kitchen use, people are once leave, if exceeding the setting time, the machine will trigger radio reception informing device by wireless form, radio reception informing device can be noted that with verbal cue user, returns to kitchen until user and is released by human body sensing heat till infrared sensor detects.Although this fire security alarming apparatus of kitchen gas range is provided with temperature relay, but, this temperature relay sensitivity is poor, owing to being arranged near gas-cooker stove disk holder, cannot sense whether body of heater exists dry combustion method exactly, therefore, the practicality of this fire security alarming apparatus of kitchen gas range is had a greatly reduced quality.
It addition, at chemical laboratory, there is also the hidden danger that the container dry combustion methods such as beaker cause the accident.
Therefore, it is necessary to design the safety monitoring device that a kind of sensitivity is higher.
Summary of the invention
The technical problem to be solved is to provide a kind of safety monitoring device based on non-contact temperature detection, should based on non-contact temperature detection safety monitoring device be skillfully constructed, easy to implement, effectively preventing the container dry combustion method such as pot or stove, highly sensitive, safety is high.
The technical solution of invention is as follows:
A kind of safety monitoring device based on non-contact temperature detection, including controlling box, infrared temperature sensor and connector；Connector one termination controls box, and the end of the other end is provided with described infrared temperature sensor；
Infrared temperature sensor is for detecting the outside wall temperature of container；Described container is place beaker on the heating, pot or stove；Heater is gas-cooker or microwave oven etc..
Control to be provided with control circuit and alarm in box；Infrared temperature sensor is connected with the input of control circuit, control circuit is provided with comparator unit, comparator unit is for comparing temperature and the temperature preset value of infrared temperature sensor detection, if the temperature value of infrared temperature sensor detection is higher than preset value, then sent alarm signal by control circuit；
Temperature preset value is the temperature value of container outer wall when being dryouied of the liquid in container.
Described connector is flexible steel in flat section tubing, the sensing of energy freedom and flexible infrared temperature sensor.
Alarm includes at least one in buzzer, speaker and wireless alarm signal output module, wireless alarm signal output module is used for exporting wireless alarm signal to intelligent terminal, and described intelligent terminal is mobile phone, panel computer or the PC terminal being linked into the Internet or LAN or notebook computer.
Described wireless alarm signal output module is at least one in bluetooth module, WiFi module, GSM, 3G or 4G communication module.
Safety monitoring device based on non-contact temperature detection also includes the air valve of the gas supply for controlling gas-cooker, and described air valve is controlled by described alarm signal.
Control to be provided with at least one alarm clock and for arranging the signal input apparatus of alarm time in box.
Controlling box and be provided with display screen, described signal input apparatus is code switch.Display screen can be touch display screen, then without code switch；As preferably, air valve is also controlled by the time arriving signal (i.e. timing output signal) of alarm clock output, it is preferable that alarm clock and code switch are 3.
Safety monitoring device based on non-contact temperature detection also includes the combustible gas sensor that is connected with control circuit, when control circuit detects that combustable gas concentration exceedes preset concentration value by combustible gas sensor, and startup alarm.
Temperature preset value is any value in 140～180 DEG C；This digital scope is that the present invention is applied in temperature range corresponding during kitchen, when being used in the occasions such as chemical laboratory, it is necessary to determine temperature preset value after carrying out dry combustion method mensuration again.
Described control circuit is analog control circuit or digital control circuit.Analog control circuit includes analog comparater, and digital control circuit includes digital comparator, also includes A/D converter if desired.Digital control circuit is single-chip microcomputer, DSP or arm processor.
Temperature preset value is 150 DEG C or 160 DEG C；
Alarm includes buzzer, speaker and wireless alarm signal output module, wireless alarm signal output module is used for exporting wireless alarm signal to intelligent terminal, and described intelligent terminal is mobile phone, panel computer or the PC terminal being linked into the Internet or LAN or notebook computer；
Described wireless alarm signal output module includes bluetooth module, WiFi module, GSM, 3G or 4G communication module；
Safety monitoring device also includes the air valve of the gas supply for controlling gas-cooker, and described air valve is controlled by described alarm signal；
Control in box at least provided with 3 alarm clocks and for arranging 3 code switch of alarm time；
Controlling box and be provided with display screen, air valve can also be controlled by the time arriving signal of alarm clock output；
Described safety monitoring device also includes the combustible gas sensor being connected with control circuit, when control circuit detects that combustable gas concentration exceedes preset concentration value by combustible gas sensor, starts alarm；
Described control circuit is single-chip microcomputer, DSP or arm processor.
Infrared temperature sensor can also be infrared camera.
Infrared temperature sensor adopts relatively inexpensive infrared temperature sensor MLX90614.
The design that the dry combustion method of the pot of the present invention judges is derived from life: during cooking, prolongation along with heat time heating time, temperature can slowly rise, if but when having moisture in pot, temperature can below 110 DEG C, people operation time without allowing temperature be too high, because dish can be burnt out after temperature is too high, and after moisture content dryouies, close fire cooling without artificial, temperature can prolongation over time and continue to raise, until burning red even on fire.According to this process and principle, it is only necessary to the temperature of detection pot, the length of binding time is it may determine that take the dish out of the pot and whether be in dry-fire condition.
Conventional temperature sensor is contact, and such as semiconductor temperature sensor DS18B20, thermocouple, platinum resistance etc. is required for contacting sensor with testee, just can measure temperature.Although contact temperature-measuring is reliable, price is low, but it is inconvenient to be used in kitchen, because circuit part can not use in high temperature occasion, and cannot be fixed on pot by circuit.On the other hand owing to pot is always moving in the process used, being fixed on bowl by temperature sensor, it is also infeasible for adopting the mode that wire connects circuit.So the scheme of contact type temperature sensor can not be used.
Accordingly, it would be desirable to employing non-contact temperature sensor, infrared thermal imaging and infrared temperature sensor are current most common methods.Usual object all can send infrared ray, when the temperature of object than ambient temperature high must more many time, infra-red radiation is more big, if adopting infrared camera to be filmed by infrared ray, just can see different brightness in the picture, the more high expression temperature of brightness is more high, the method that this infrared viewing device being military adopts, reflecting the profiling temperatures in an angular field of view, information is comprehensive, reliable operation, but generally price is very high, the price of one infrared camera is in several ten thousand to hundreds of thousands units, for cost consideration, is not suitable for kitchen or common laboratory uses.Infrared temperature sensor adopts relatively inexpensive infrared temperature sensor MLX90614, and it is a general infrared measurement of temperature module.Before dispatching from the factory, this module carries out verifying and linearisation, has noncontact, volume is little, precision is high, low cost and other advantages.Measured target temperature and ambient temperature can be exported by digital signal, it is possible to direct and interface microcontroller, are suitable for air conditioning for automobiles, room heater, household electrical appliance, handheld device and medical device applications etc..When adopting this sensor temperature, it is desirable to sensor must be directed at testee, the lamp stand that the present invention is exactly from desk lamp is inspired, and devises the metal hose mounting bracket as temperature sensor.Such user has only to simply adjust flexible pipe in use, makes the bowl that temperature sensor alignment generates heat just passable, and owing to temperature sensor thermometric region is a sector region, just, this has been considerably improved the ease for use of this equipment to rough alignment.
In order to detect the dry-fire condition of pot, test conventional many kinds of pan: frying pan, pressure cooker, common stainless steel kettle.The position that the detection of the temperature of pot faces toward with sensor is relevant, when sensor faces the interface portion in flame and the bottom of a pan and is following, temperature can up to more than 260 DEG C, if but slightly up, when allowing sensor device face pot, temperature under non-dry-fire condition not over 130 DEG C, after water in pot dryouies, then temperature begins to ramp up, during test, if temperature arrives 260 DEG C, pot is rubescent.Through repetition test, temperature sensor is directed at centre (the fireless part of pot, when discovery does not have a dry combustion method, temperature is mostly below 100 DEG C, a few cases is to being not more than 120 DEG C too on time) time, dry combustion method temperature is arranged on 150-180 DEG C (preferably 160 DEG C) can be very feasible the dry combustion method of pans for use in kitchen detected, and now gas-cooker is in safe combustion state, so the default value (preferred value) of temperature alarming is arranged on 160 DEG C by the present invention.In order to adapt to the needs of minority occasion, the value that arranges of alarm temperature has been designed to adjustable, and user arbitrarily can adjust between 0 255 DEG C, but the default value that 160 DEG C will be recovered again after turning back on.
Beneficial effect:
The safety monitoring device based on non-contact temperature detection of the present invention, has following functions:
(1) security monitoring, the occasion such as kitchen or laboratory can be carried out safely full-time monitoring, it be furnished with combustible gas alarm and infrared temperature sensor, when in kitchen or laboratory, fuel gas (mainly being caused by gas leakage) can send alarm when exceeding the temperature of finite concentration or pot more than 160 DEG C, this alarm signal cuts off a switch simultaneously, can be used for cutting off the source of the gas of gas-cooker.
The central characteristics of the present invention is the thermometric pattern adopting infrared temperature sensor complexed metal flexible pipe, infrared temperature sensor alignment position can be adjusted by metal hose, and originally by checking that furnace body outer wall temperature realizes dry combustion method and reports to the police, highly sensitive, safety is high.
(2) alarm clock function possesses three independent alarm clocks, all adopts sound and light alarm mode, simple to operate, intuitive display, and applicable family kitchen is especially suitable for old people and uses.
(3) smart mobile phone is connected: be connected with user's smart mobile phone by bluetooth or other wireless modes, timer time to or all can remind user by mobile phone or other-end in time during safety alarm, to facilitate user to understand presence states in time, it is to avoid security incident.
(4) one of them alarm clock can be connected with accessory power outlet, it is possible at alarm time then disconnecting power switch immediately, this function is particularly practical in kitchen or laboratory.
Sum it up, the present invention adopts the temperature of infrared Using Infrared Technique detection container, and sentence whether container is in dry-fire condition, if it is, report to the police, there is gas leakage warning function simultaneously；Can arranging 4 alarm clocks, simple to operate, intuitive display, special applicable family kitchen and laboratory use, and are especially suitable for the not so good old people of family memory and use simultaneously.Warning message is shown on intelligent terminal by wireless technology, it is possible in the terminals such as mobile phone, monitor the security situation at scene easily.
In sum, this safety monitoring device based on non-contact temperature detection is skillfully constructed, and feature richness is highly sensitive, can carry out monitor in real time to fire scene, and safety is high.
Accompanying drawing explanation
Fig. 1 is the schematic diagram during safety monitoring device use based on non-contact temperature detection.
Fig. 2 is the electric theory diagram of safety monitoring device.
Fig. 3 is main program flow chart；
Fig. 4 is timer interrupt program flow chart；
Fig. 5 is runs status routine flow chart.
Label declaration: 1-controls box, 2-flexible steel in flat section tubing, 3-infrared temperature sensor, 4 display screens, 5-code switch, 6-gas-cooker, 7-air supply pipe, 8-air valve, 9-container.
Detailed description of the invention
Below with reference to the drawings and specific embodiments, the present invention is described in further details:
Embodiment 1: such as Fig. 1-5, a kind of safety monitoring device based on non-contact temperature detection, including controlling box 1, infrared temperature sensor 3 and connector；Connector one termination controls box, and the end of the other end is provided with described infrared temperature sensor；
Infrared temperature sensor is for detecting the outside wall temperature of container 9；Described container is be placed on beaker on gas-cooker 6, pot or stove；
Control to be provided with control circuit and alarm in box；Infrared temperature sensor is connected with the input of control circuit, control circuit is provided with comparator unit, comparator unit is for comparing temperature and the temperature preset value of infrared temperature sensor detection, if the temperature value of infrared temperature sensor detection is higher than preset value, then sent alarm signal by control circuit；
Temperature preset value is 160 DEG C.
Described connector is flexible steel in flat section tubing 2, the sensing of energy freedom and flexible infrared temperature sensor.
Alarm includes in buzzer, speaker and wireless alarm signal output module, wireless alarm signal output module is used for exporting wireless alarm signal to intelligent terminal, and described intelligent terminal is mobile phone, panel computer or the PC terminal being linked into the Internet or LAN or notebook computer；
Described wireless alarm signal output module includes bluetooth module, WiFi module, GSM, 3G or 4G communication module；
Safety monitoring device also includes the air valve 8 of the gas supply for controlling gas-cooker, and described air valve is controlled by described alarm signal；
Control in box at least provided with 3 alarm clocks and for arranging 3 code switch of alarm time；
Controlling box and be provided with display screen, air valve is also controlled by the time arriving signal of alarm clock output；
Described safety monitoring device also includes the combustible gas sensor being connected with control circuit, when control circuit detects that combustable gas concentration exceedes preset concentration value by combustible gas sensor, starts alarm；
Described control circuit is single-chip microcomputer, DSP or arm processor.
Preferred model is STC15F2K60S2 single-chip microcomputer, and this is the single-chip microcomputer that Shenzhen company design produces, ratio 8051 traditional single-chip microcomputers a lot of times soon, but function is the same with instruction, especially supports C language programming.
In the problem of display, charactron is that the display mode of the most frequently used language, program and circuit also can find a lot of reference material on the net.But numeral method content is single, this project needs the content shown more, therefore, adopts the LCDs (LCD) of dot matrix, it can show picture, Chinese character, numeral, various letter and punctuation mark under the control of single-chip microcomputer, it might even be possible to shows self-designed icon.It is made up of the dot matrix that can control, by the display of these points of Single-chip Controlling or do not show, it is preferable that selecting monochromatic matrix LCD, resolution is 240*128 point.
After adopting code switch, the setting of an intervalometer and duty switching have only to a code switch and just can complete, and whole interface has only to 4 code switch.The amendment of real-time time adds a button, and this button can allow program enter amendment state.
In order to improve the practicality of intervalometer, and make full use of the function of single-chip microcomputer, return some miscellaneous functions of this timer design: controlling 1 relay, the time is deenergization then；Combustible gas sensor, is detecting gas leakage alarm.In order to debug conveniently, utilize serial-port extension to go out a USB interface, be mainly used in down loading updating program, bluetooth link block, be used for connecting smart mobile phone.
CPU adopts STC15F2K60S2, and this is the single-chip microcomputer of and 8051 compatibilities, but has greatly improved in pin with speed.3 rotary coding switch operate with quitting work etc. for arranging time of 3 intervalometers and opening, another rotary encoder is used for arranging alarm temperature value, relay output is for then cutting off out-put supply when timing, to close some electrical equipments, the output of another relay is used for cutting off source of the gas.In native system, USB interface is mainly used in downloading and debugging routine.Bluetooth module is connected with CPU by serial port, communications protocol that module itself is built-in.Adopting the concentration of ZYMQ-2 combustible gas sensor detection imflammable gas, send signal when kitchen fuel gas has leakage to single-chip microcomputer, single-chip microcomputer sends alarm signal after receiving this signal, and alarm signal is sent to mobile phone.
Infrared temperature sensor MLX90614 adopts SMBus agreement and CPU communication, can ambient temperature, target temperature be sent with data mode, and CPU carries out data conversion upon receipt and can be obtained by temperature value.
SCL, PWM/SDA pin of MLX90614 is directly connected to the common I/O mouth of MCU, owing to the input/output interface of MLX90614 is drain open circuit (OD) structure, it is necessary to add pull-up resistor.Multiple MLX90614 may be used in a system, the corresponding different address of each MLX90614, is accessed different MLX90614 by the difference of address, can reach at most 127.
Sending and receive data to carry out in units of byte, send a byte (step-by-step sends, and sending 8 positions is exactly a byte) every time, be then judged as whether the other side has response, if there being response, just then sending next byte；Without response, repeatedly retransmitting this byte, until there being response, just then sending next byte, if after repeatedly retransmitting, remaining without response, just terminating.When receiving data, receive a byte (step-by-step receives, and receiving 8 positions is exactly a byte) every time, then send an answer signal to the other side, then just can continue to next byte.The data read from MLX90614 kind are 16, it is made up of most-significant byte (DataH) and least-significant byte (DataL) two parts, wherein the storage of address ram 07H unit is TOBJ1 data, scope of data is from 0x27AD to 0x7FFF, and the temperature range of expression is-70.01 DEG C to+382.19 DEG C.The data (DataH:DataL) read from MLX90614 are scaled shown in temperature data (unit for DEG C) equation below:
T=(DataH:DataL) * 0.02-273.15；
Software is mainly made up of 2 functions.
RAM data within uintMEM_READ (ucharslave_addR, ucharcmdR) read sensor, in the RAM district of sensor, address 06 storage has ambient temperature value, and 07H storage has target temperature value.
VoidCALTEMP (uintTEMP) temperature transition, converts the data of TEMP to temperature by (formula one), is used for judging and showing.Program also includes temperature sampling filtering algorithm.
Find in reality is tested: the reading of temperature sensor is not highly stable by program, the temperature value appearance that a deviation normal value is bigger sometimes, it may be possible to miscommunication during reading, it is also possible to the interference of temperature sensor itself.Solution is to be filtered processing to the data read.The common method of filtering is by repeatedly reading, and averages, and number of times is more many, and data are more stable, but may require that the longer time.By observing the practical situation of temperature, it has been found that mistake is not as many, but each deviation is relatively big, and typically not occurs mistake continuously, the method then adopting " read and take intermediate value three times ".Adopt " caving area ", after reading three temperature values, adopt " bubbling method " to be sorted from low to high by three temperature values, take the temperature value of centre as current actual temperature.Process through this mode, the stable detection of temperature can be realized.
Adopt 240*128 LCD screen, it is possible to Display of Chinese characters, figure, numeral etc..Show abundant in content succinctly, including the state of each intervalometer, real-time time, kitchen temperature etc..
Timer processing
With the intervalometer in single-chip microcomputer, produce an interruption each second, in interrupt function, notify that mastery routine reads current real-time clock the state according to each intervalometer, calculate remaining time or the time-out time of the intervalometer being in open mode, and show.
Owing to crystal oscillator frequency is 11.0592MHz, the toggle rate of this chip is identical with crystal oscillator frequency, intervalometer 1 only 16 bits represent timing, so maximum timing only about 5.9 milliseconds, interrupt once so intervalometer is arranged to 0.5 millisecond, variable systime is added one by interrupt routine, is just exactly after adding 2000 times one second, then the second is indicated that bsec puts 1.Additionally in a program, owing to have employed rotary coding switch as the switch arranging the time, in order to carry out program Key dithering, to improve the reliability of operation, through verification experimental verification, every 0.5 millisecond of rotary coding switch checks once the most rationally, and it is convenient for operating, so checked the state of rotary coding switch in interrupt routine, and it is saved in variable K.
VoidTimeOP (void) performs once each second in mastery routine, it is judged that the state of intervalometer also processes the content of display.Intervalometer is always operating at following four state: closes (state 0), run (state 1), report to the police (state 2), stop (state 3).Under closed mode, display display "Off", intervalometer is not-time, enters running status after pressing the switch of correspondence；Running status represents that intervalometer timing is but without arriving the time preset, display can show the remaining time, when remaining time more than 1 minute time, with " minute " for unit, during less than 1 minute, just with " second " for unit, after time is up, automatically proceed to state 2, or press proceeding to " halted state " after inductive switch；Alarm condition represents that the time that intervalometer is preset arrives, buzzer can send audible alarm, display display quarter-bell symbol, show time-out time (in seconds) simultaneously, automatically halted state is proceeded to after 30 seconds, under halted state, the display that display keeps original is constant: display " time-out 30 seconds " and quarter-bell symbol, but buzzer stops sending sound, display from closed mode is different, to remind user that this timer time arrives, but user does not comprehend it, press to inductive switch laggard enter closed mode.
Imflammable gas is monitored
Adopt the leakage of ZYMQ-2 combustible gas sensor detection combustion gas, this sensor can detect liquefied gas, the imflammable gas concentration that ethanol etc. are common, detection range is 100-10000ppm, export with voltage system, when using as kitchen warning, it is not required for knowing concrete concentration, have only to when dangerous and provide warning just, in order to simplify design, one-level comparator has been added after sensor exports, high level is exported time normal, the output low level when concentration is more than 500ppm, as long as single-chip microcomputer detects that this low level is issued by gas leakage alarm signal.
Bluetooth function
When family uses, may often be such that and have food stewing in kitchen, people but takes a break in parlor, in order to be suitable for this situation, devises Bluetooth function, matching with mobile phone AAP software, it is possible to check on smart mobile phone whether the time of intervalometer arrives.Have employed a bluetooth and turn the module (model is SPP-CA) of serial port, it can resolve Bluetooth protocol, and becomes a transparent serial port after successfully transferring, and thus single-chip microcomputer just can use Bluetooth function with serial port.
Subordinate list: main element inventory
Claims (10)
1. the safety monitoring device based on non-contact temperature detection, it is characterised in that include controlling box (1), infrared temperature sensor (3) and connector；Connector one termination controls box, and the end of the other end is provided with described infrared temperature sensor；
Infrared temperature sensor is used for detecting the outside wall temperature of container (9)；Described container is place beaker on the heating, pot or stove；
Control to be provided with control circuit and alarm in box；Infrared temperature sensor is connected with the input of control circuit, control circuit is provided with comparator unit, comparator unit is for comparing temperature and the temperature preset value of infrared temperature sensor detection, if the temperature value of infrared temperature sensor detection is higher than preset value, then sent alarm signal by control circuit.
2. the safety monitoring device based on non-contact temperature detection according to claim 1, it is characterised in that described connector is flexible steel in flat section tubing (2).
3. the safety monitoring device based on non-contact temperature detection according to claim 1, it is characterized in that, alarm includes at least one in buzzer, speaker and wireless alarm signal output module, wireless alarm signal output module is used for exporting wireless alarm signal to intelligent terminal, and described intelligent terminal is mobile phone, panel computer or the PC terminal being linked into the Internet or LAN or notebook computer.
4. the safety monitoring device based on non-contact temperature detection according to claim 3, it is characterised in that described wireless alarm signal output module is at least one in bluetooth module, WiFi module, GSM, 3G or 4G communication module.
5. the safety monitoring device based on non-contact temperature detection according to claim 1, it is characterised in that also including the air valve (8) of gas supply for controlling gas-cooker, described air valve is controlled by described alarm signal.
6. the safety monitoring device based on non-contact temperature detection according to claim 1, it is characterised in that control to be provided with at least one alarm clock and for arranging the signal input apparatus of alarm time in box.
7. the safety monitoring device based on non-contact temperature detection according to claim 6, it is characterised in that controlling box and be provided with display screen (4), described signal input apparatus is code switch (5).
8. the safety monitoring device based on non-contact temperature detection according to any one of claim 1-7, it is characterized in that, also include the combustible gas sensor being connected with control circuit, when control circuit detects that combustable gas concentration exceedes preset concentration value by combustible gas sensor, start alarm.
9. the safety monitoring device based on non-contact temperature detection according to claim 1, it is characterised in that temperature preset value is any value in 140～180 DEG C.
10. the safety monitoring device based on non-contact temperature detection according to claim 2, it is characterised in that temperature preset value is 150 DEG C or 160 DEG C；
Alarm includes buzzer, speaker and wireless alarm signal output module, wireless alarm signal output module is used for exporting wireless alarm signal to intelligent terminal, and described intelligent terminal is mobile phone, panel computer or the PC terminal being linked into the Internet or LAN or notebook computer；
Described wireless alarm signal output module includes bluetooth module, WiFi module, GSM, 3G or 4G communication module；
Safety monitoring device also includes the air valve (8) of the gas supply for controlling gas-cooker, and described air valve is controlled by described alarm signal；
Control in box at least provided with 3 alarm clocks and for arranging 3 code switch of alarm time；
Controlling box and be provided with display screen, air valve can also be controlled by the time arriving signal of alarm clock output；
Described safety monitoring device also includes the combustible gas sensor being connected with control circuit, when control circuit detects that combustable gas concentration exceedes preset concentration value by combustible gas sensor, starts alarm；
Described control circuit is single-chip microcomputer, DSP or arm processor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610293067.8A CN105758529B (en) | 2016-05-05 | 2016-05-05 | A kind of safety monitoring device based on non-contact temperature detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610293067.8A CN105758529B (en) | 2016-05-05 | 2016-05-05 | A kind of safety monitoring device based on non-contact temperature detection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105758529A true CN105758529A (en) | 2016-07-13 |
| CN105758529B CN105758529B (en) | 2019-02-22 |
Family
ID=56323541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610293067.8A Expired - Fee Related CN105758529B (en) | 2016-05-05 | 2016-05-05 | A kind of safety monitoring device based on non-contact temperature detection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105758529B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107367697A (en) * | 2017-08-24 | 2017-11-21 | 武汉大学 | A kind of double detector lithium battery surface temperature detector and method |
| CN108320474A (en) * | 2018-03-29 | 2018-07-24 | 石信元 | Hearth is forgotten to close fiery reminiscences and its monitoring method, observation circuit |
| TWI670035B (en) * | 2017-11-28 | 2019-09-01 | 睿橋資訊股份有限公司 | Dry burning judgment method and dry burning warning system |
| CN110345520A (en) * | 2019-07-17 | 2019-10-18 | 移康智能科技（上海）股份有限公司 | A kind of gas-cooker intelligent monitor system |
| CN110631369A (en) * | 2019-08-13 | 2019-12-31 | 福建师范大学 | Muffle furnace with cooling chamber |
| CN112484090A (en) * | 2020-12-02 | 2021-03-12 | 中南林业科技大学 | Gas stove safety monitoring method based on intelligent judgment for dry burning prevention |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006226611A (en) * | 2005-02-17 | 2006-08-31 | Hochiki Corp | Temperature monitoring system of gas appliance |
| CN2911629Y (en) * | 2004-12-31 | 2007-06-13 | 袁剑敏 | Non-contact infrared temp measurer with universa probe |
| CN104013303A (en) * | 2014-05-30 | 2014-09-03 | 江汉大学 | Kettle monitoring device and system |
| CN203870775U (en) * | 2014-05-13 | 2014-10-08 | 苏州经贸职业技术学院 | Dry burning prevention intelligent prompting apparatus based on Internet of Things technology |
| CN104776922A (en) * | 2015-04-26 | 2015-07-15 | 张新安 | Digital infrared thermometer |
| CN105551200A (en) * | 2016-02-25 | 2016-05-04 | 中南林业科技大学 | Multifunctional monitoring and alarming system for kitchen |
-
2016
- 2016-05-05 CN CN201610293067.8A patent/CN105758529B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2911629Y (en) * | 2004-12-31 | 2007-06-13 | 袁剑敏 | Non-contact infrared temp measurer with universa probe |
| JP2006226611A (en) * | 2005-02-17 | 2006-08-31 | Hochiki Corp | Temperature monitoring system of gas appliance |
| CN203870775U (en) * | 2014-05-13 | 2014-10-08 | 苏州经贸职业技术学院 | Dry burning prevention intelligent prompting apparatus based on Internet of Things technology |
| CN104013303A (en) * | 2014-05-30 | 2014-09-03 | 江汉大学 | Kettle monitoring device and system |
| CN104776922A (en) * | 2015-04-26 | 2015-07-15 | 张新安 | Digital infrared thermometer |
| CN105551200A (en) * | 2016-02-25 | 2016-05-04 | 中南林业科技大学 | Multifunctional monitoring and alarming system for kitchen |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107367697A (en) * | 2017-08-24 | 2017-11-21 | 武汉大学 | A kind of double detector lithium battery surface temperature detector and method |
| TWI670035B (en) * | 2017-11-28 | 2019-09-01 | 睿橋資訊股份有限公司 | Dry burning judgment method and dry burning warning system |
| CN108320474A (en) * | 2018-03-29 | 2018-07-24 | 石信元 | Hearth is forgotten to close fiery reminiscences and its monitoring method, observation circuit |
| CN110345520A (en) * | 2019-07-17 | 2019-10-18 | 移康智能科技（上海）股份有限公司 | A kind of gas-cooker intelligent monitor system |
| CN110631369A (en) * | 2019-08-13 | 2019-12-31 | 福建师范大学 | Muffle furnace with cooling chamber |
| CN112484090A (en) * | 2020-12-02 | 2021-03-12 | 中南林业科技大学 | Gas stove safety monitoring method based on intelligent judgment for dry burning prevention |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105758529B (en) | 2019-02-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105894713B (en) | A kind of method for safety monitoring detected based on non-contact temperature | |
| CN105758529A (en) | Safety monitoring device based on non-contact type temperature detection | |
| CN205680256U (en) | A kind of anti-dry burning safety watch-dog | |
| US20090017404A1 (en) | Stovetop/range warning and control fire safety system | |
| CN105045190A (en) | Method for carrying out safety monitoring and early warning on kitchen work environment and system | |
| CN203718844U (en) | Residual heat reminding device for gas stove and gas stove | |
| CN106304485A (en) | Multifunctional intelligent desk lamp based on STM32 and intelligent control method thereof | |
| CN110880230A (en) | Intelligent combustible gas detector and alarm method | |
| CN110782630A (en) | Household gas alarm method, system and equipment | |
| CN205176696U (en) | Multi -functional temperature controller | |
| CN110969822A (en) | Safety monitoring system applied to gas stove | |
| CN205641019U (en) | Temperature of gas -cooker detects and alarm devices | |
| CN208442868U (en) | Cigarette stove high-temperature alarming device and system | |
| CN210488752U (en) | Household gas alarm system and equipment | |
| CN109945243A (en) | A kind of intelligence hearth | |
| TWI553277B (en) | Stoves self-extinguishing control system and its method and computer program product storing stoves self-extinguishing control program | |
| CN212299089U (en) | Gas stove safety protection device monitored by using sensor network technology | |
| Chioran et al. | Low Cost Autonomous Learning and Advising Smart Home Automation System. | |
| CN210777111U (en) | Safety monitoring system applied to gas stove | |
| CN210625859U (en) | Temperature detection terminal | |
| CN212871473U (en) | Novel dry-burning-prevention alarm for kitchen ware | |
| CN110906406B (en) | Multifunctional range hood control system, range hood and control method | |
| CN210446811U (en) | Non-contact infrared temperature measurement intelligent handle and pan | |
| CN210666405U (en) | Gas safety control device | |
| CN112484091A (en) | Self-adaptive intelligent gas stove safety monitoring system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190222 Termination date: 20200505 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |