CN108398902A - A kind of kitchen safety monitoring system and method based on FPGA - Google Patents
A kind of kitchen safety monitoring system and method based on FPGA Download PDFInfo
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- CN108398902A CN108398902A CN201810179981.9A CN201810179981A CN108398902A CN 108398902 A CN108398902 A CN 108398902A CN 201810179981 A CN201810179981 A CN 201810179981A CN 108398902 A CN108398902 A CN 108398902A
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 12
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 60
- 239000003345 natural gas Substances 0.000 claims abstract description 30
- 239000000428 dust Substances 0.000 claims abstract description 15
- 230000003321 amplification Effects 0.000 claims description 21
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 21
- 238000012545 processing Methods 0.000 claims description 18
- 230000005611 electricity Effects 0.000 claims description 8
- 239000004575 stone Substances 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 4
- 230000004044 response Effects 0.000 claims description 4
- 230000007246 mechanism Effects 0.000 claims description 3
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 239000002245 particle Substances 0.000 abstract description 2
- 238000012806 monitoring device Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000036581 peripheral resistance Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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- 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
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- Automation & Control Theory (AREA)
- Air Conditioning Control Device (AREA)
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- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The invention discloses a kind of kitchen safety monitoring system based on FPGA, is related to environmental monitoring technology field, including：CO sensors, sensor of natural gas, dust sensor, Temperature Humidity Sensor, the 5th resistance Rshunt1, the 6th resistance Rshunt2, the first difference turns single-ended amplifier U1, the second difference turns single-ended amplifier U2, operational amplifier U3, first resistor Rg1, second resistance Rg2,3rd resistor Rg3, the 4th resistance Rg4, ADC, controls chip FPGA, power module, alarm module, OLED display module and optional expansion interface.The invention also discloses a kind of kitchen method for safety monitoring based on FPGA.The advantage of the invention is that：System can monitor at a high speed concentration value, particle concentration value and the humiture concentration value of the gas in kitchen in real time, and the cost of system is low, small.Used monitoring method is more efficient, confidentiality higher.
Description
Technical field
The present invention relates to environmental monitoring technology field, be more particularly to a kind of kitchen safety monitoring system based on FPGA and
Method.
Background technology
In existing life, it is substantially in current family kitchen and is using natural gas or coal gas, gas can inevitably occur
Body leaks, or is that water spilling leads to fray-out of flame when heating up water, and causes gas leakage, or be since carelessness leads to pot
In dry-fire condition so as to cause security risk, these can all threaten personal safety.It, can after monitoring device is installed in kitchen
If monitoring kitchen environment takes timely measure there is security risk in real time.
In the prior art, the kitchen monitoring device in family kitchen is on the high side, some average families consider price simultaneously
Not in kitchen installation environment monitoring device, most of existing equipment is monitored for domestic environment, is mostly used high definition and is shown
Screen, causes expensive, of high cost, and the exquisite magnificent comparison of its appearance is suitble to be placed in parlor, and these equipment acquire mostly
Microcontroller controls, and does not accomplish that real-time is poor, the larger problem of volume in real time.Therefore a kind of inexpensive and high speed is needed in real time
Kitchen environment monitoring device, average family can be also benefited.
Invention content
It is poor that technical problem to be solved by the present invention lies in real-times, of high cost, provides a kind of kitchen based on FPGA
Safety monitoring system and method.
The present invention is that solution above-mentioned technical problem, specific technical solution are as follows by the following technical programs：
A kind of kitchen safety monitoring system based on FPGA is provided, including：CO sensors, sensor of natural gas, dust pass
Sensor, Temperature Humidity Sensor, the 5th resistance Rshunt1, the 6th resistance Rshunt2, the first difference turn single-ended amplifier U1, second
Difference turns single-ended amplifier U2, operational amplifier U3, first resistor Rg1, second resistance Rg2,3rd resistor Rg3, the 4th resistance
Rg4, ADC, control chip FPGA, power module, alarm module, OLED display module and optional expansion interface；
The CO sensors are connect with one end of the 5th resistance Rshunt1, and the 5th resistance Rshunt1's is another
End ground connection, two input terminals that first difference turns single-ended amplifier U1 connect with the both ends of the 5th resistance Rshunt1 respectively
It connects, the both ends of the first resistor Rg1 turn an input terminal of single-ended amplifier U1 with first difference respectively and output end connects
It connects, the output end that first difference turns single-ended amplifier U1 is connect with the ADC；
The sensor of natural gas is connect with one end of the 6th resistance Rshunt2, the 6th resistance Rshunt2's
The other end is grounded, and second difference turns two of two input terminals of single-ended amplifier U2 respectively with the 6th resistance Rshunt2
End connection, the both ends of the second resistance Rg2 turn an input terminal and the output of single-ended amplifier U2 with second difference respectively
End connection, the output end that second difference turns single-ended amplifier U2 are connect with the ADC；
The dust sensor is connect with one end of the 4th resistance Rg4, the other end of the 4th resistance Rg4 and institute
State the input terminal connection of operational amplifier U3, the both ends of 3rd resistor Rg3 both ends with the operational amplifier U3 respectively
Connection, the output end of the operational amplifier U3 are connect with the ADC；
The Temperature Humidity Sensor, the ADC, the power module, the alarm module, the OLED display module and
The optional expansion interface is all connect with the control chip FPGA.
Preferably, the control chip FPGA is using the chip for not integrating stone.
Preferably, the Temperature Humidity Sensor is communicated with the control chip FPGA by IIC interfaces.
Preferably, the OLED display module is communicated with the control chip FPGA by SPI interface.
Preferably, the 5th resistance Rshunt1 and the 6th resistance Rshunt2 is shunt resistance.
Preferably, the first resistor Rg1, the second resistance Rg2, the 3rd resistor Rg3 and the 4th resistance
Rg4 is adjustable resistor.
Preferably, that the OLED in the OLED display module is selected is 0.96 size OLED.
Preferably, the control chip FPGA uses efficient single port ROM administrative mechanisms.
Preferably, the optional expansion interface is reserved connection kitchen ventilator or wind turbine.
A kind of kitchen method for safety monitoring based on FPGA is provided, the method includes：
The CO concentration values in kitchen are acquired by CO sensors, after the processing of the CO sensors, output current, electricity
Stream is after the 5th resistance Rshunt1 so that the 5th resistance Rshunt1 obtains voltage, and voltage turns single by the first difference
After holding amplifier U1 amplification, obtain amplified single ended output voltage, the amplification factor of voltage can by first resistor Rg1 into
Row is adjusted so that the voltage of Single-end output is close in the range of the input voltage full scale of ADC；
The concentration of natural gas value in kitchen is acquired by sensor of natural gas, by the processing of the sensor of natural gas
Afterwards, output current, electric current is after the 6th resistance Rshunt2 so that the 6th resistance Rshunt2 obtains voltage, and voltage is logical
It crosses after the second difference turns single-ended amplifier U2 amplification, obtains amplified single ended output voltage, the amplification factor of voltage can lead to
It crosses second resistance Rg2 to be adjusted so that the voltage of Single-end output is close in the range of the input voltage full scale of ADC；
The granularity concentration value in kitchen is acquired by dust sensor, it is defeated after the processing of the dust sensor
Go out voltage, voltage exports amplified voltage after the amplification of operational amplifier U3, and the amplification factor of voltage can pass through
Four resistance Rg4 and 3rd resistor Rg3 are adjusted so that the voltage of output is close in the range of the input voltage full scale of ADC；
The analog signal of the CO concentration values acquired, concentration of natural gas value, granularity concentration value is passed through into the ADC processing
Afterwards, digital signal is converted to, and will be handled in the digital data transmission converted to control chip FPGA；
By IIC interfaces the temperature value that Temperature Humidity Sensor acquires is transferred at the control chip FPGA
Reason；
By the processing of the control chip FPGA, CO concentration values, concentration of natural gas value, granularity concentration value and temperature are judged
Whether humidity value is more than threshold value, if one value of any of which is alarmed more than the threshold value alarm module that all makes an immediate response；
By the control of the control chip FPGA by the CO concentration values acquired, concentration of natural gas value, granularity concentration
Value and temperature and humidity value are shown in OLED display module.
The present invention has the following advantages compared with prior art：
1, the number for being acquired CO sensors, sensor of natural gas, dust sensor and Temperature Humidity Sensor in the present invention
According to being transferred in control chip FPGA, since FPGA has the advantage of parallel processing, all the sensors can be handled simultaneously
Data, therefore the high speed real-time of whole system can be greatly improved, specifically execution sequence determines traditional microcontroller
It can not reach this effect.
2, this secondary design drives OLED using the purely logical Verilog language of FPGA in the present invention, using efficient single-ended
Mouth ROM administrative mechanisms, realize the Dynamic Announce of OLED, without the use of soft core or stone that FPGA is integrated, are not collected using Actel
OLED is driven at the fpga chip of stone.Since the not integrated stone of chip makes chip cost substantially reduce, and greatly improve
The confidentiality of code.
3, for the OLED display module in the present invention using the OLED of 0.96 size, and high resolution is effective to reduce
The volume of system so that the system can be placed on any position in kitchen.
4, the reserved control interface in the optional expansion interface in the present invention can be outer with external kitchen ventilator or wind turbine etc.
If embodying the flexibility of system, intelligent control feature.
5, the monitoring method employed in the present invention is more efficient, confidentiality higher.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of kitchen safety monitoring system based on FPGA of the embodiment of the present invention.
Fig. 2 is a kind of flow diagram of kitchen method for safety monitoring based on FPGA of the embodiment of the present invention.
Specific implementation mode
It elaborates below to the embodiment of the present invention, the present embodiment is carried out lower based on the technical solution of the present invention
Implement, gives detailed embodiment and specific operating process, but protection scope of the present invention is not limited to following implementation
Example.
As shown in Figure 1, a kind of kitchen safety monitoring system based on FPGA includes：CO sensors, sensor of natural gas,
Dust sensor, Temperature Humidity Sensor, shunt resistance Rshunt1, shunt resistance Rshunt2, difference turn single-ended amplifier U1, difference
Divide and turns single-ended amplifier U2, operational amplifier U3, resistance Rg1, resistance Rg2, resistance Rg3, resistance Rg4, ADC, control chip
FPGA, power module, alarm module, OLED display module and optional expansion interface.
CO sensors are connect with one end of shunt resistance Rshunt1, the other end ground connection of shunt resistance Rshunt1, difference
Two input terminals for turning single-ended amplifier U1 are connect with the both ends of shunt resistance Rshunt1 respectively, the both ends of resistance Rg1 respectively with difference
The input terminal for turning single-ended amplifier U1 is divided to be connected with output end, the output end that difference turns single-ended amplifier U1 is connect with ADC.
Sensor of natural gas is connect with one end of shunt resistance Rshunt2, the other end ground connection of shunt resistance Rshunt2,
Two input terminals that difference turns single-ended amplifier U2 are connect with the both ends of shunt resistance Rshunt2 respectively, the both ends difference of resistance Rg2
Turn an input terminal of single-ended amplifier U2 with difference and output end is connect, difference turns the output end of single-ended amplifier U2 and ADC connects
It connects；
Dust sensor is connect with one end of resistance Rg4, and the other end of resistance Rg4 connects with the input terminal of operational amplifier U3
It connects, the both ends of resistance Rg3 are connect with the both ends of the operational amplifier U3 respectively, and output end and the ADC of operational amplifier U3 connect
It connects；
Temperature Humidity Sensor, ADC, power module, alarm module, OLED display module and optional expansion interface all with control
The FPGA connections of coremaking piece.
Specifically, OLED is driven using the purely logical Verilog language of FPGA, using efficient single port ROM supervisors
System, realizes the Dynamic Announce of OLED, without the use of soft core or stone that FPGA is integrated, utilizes the not integrated stones of Actel
Fpga chip drives OLED.OLED display module is communicated with control chip FPGA by SPI interface.
Specifically, the output type of CO sensors and sensor of natural gas is all electric current, it is therefore desirable to external one respectively
Shunt resistance Rshunt1 and shunt resistance Rshunt2 is used for obtaining voltage, and turns single-ended amplifier U1 and U2 by difference respectively
Single ended output voltage is obtained, is adjustable since difference turns single-ended amplifier U1 and U2, amplification factor can be by outer
Connecting resistance Rg1 and Rg2 carries out multiple adjusting, is adjusted according to the regulative mode of amplifier so that the voltage of output is close to ADC
Input voltage full range in.
Specifically, dust sensor can detect particulate matter Pm2.5, output type is voltage, it is therefore desirable to a fortune
It calculates amplifier U3 and carries out output amplification factor adjusting using peripheral resistance Rg3 and resistance Rg4, according to the adjusting side of operational amplifier
Formula is adjusted so that the voltage of output is close in the input voltage full range of ADC.
Specifically, Temperature Humidity Sensor is communicated with control chip FPGA by IIC interfaces, sensor is collected
CO concentration values, concentration of natural gas value, particle concentration value be transferred to ADC, ADC by these collect data conversion after transmit
Data processing is carried out in control chip FPGA, since FPGA has the advantage of parallel processing, can be handled simultaneously all
The data of sensor, therefore the high speed real-time of whole system can be greatly improved, traditional microcontroller specifically executes sequence
Determine that it can not reach this effect.
Specifically, control chip FPGA handles the data acquired, CO concentration is judged according to handled result
Whether value, concentration of natural gas value, granularity concentration value and temperature and humidity value are more than threshold value, if one value of any of which is more than threshold value
The alarm module that all makes an immediate response is alarmed.
Specifically, using the OLED of 0.96 size in OLED display module, and high resolution, effectively reduces and be
The volume of system so that the system can be placed on any position in kitchen.
Specifically, the reserved control interface in optional expansion interface can be with peripheral hardwares such as external kitchen ventilator or wind turbines.
As shown in Fig. 2, the CO concentration values in CO sensors acquisition kitchen, after the processing of CO sensors, output current,
Electric current is after shunt resistance Rshunt1 so that shunt resistance Rshunt1 obtains voltage, and voltage turns single-ended amplification by difference
After device U1 amplifications, amplified single ended output voltage is obtained, the amplification factor of voltage can be adjusted by resistance Rg1, be made
The voltage of Single-end output is obtained close in the range of the input voltage full scale of ADC.
Sensor of natural gas acquires the concentration of natural gas value in kitchen, after the processing of sensor of natural gas, output electricity
Stream, electric current is after shunt resistance Rshunt2 so that shunt resistance Rshunt2 obtains voltage, and voltage turns single-ended by difference and puts
After big device U2 amplifications, amplified single ended output voltage is obtained, the amplification factor of voltage can be adjusted by resistance Rg2,
So that the voltage of Single-end output is close in the range of the input voltage full scale of ADC.
Dust sensor acquires the granularity concentration value in kitchen, after the processing of dust sensor, output voltage, and electricity
Pressure exports amplified voltage, the amplification factor of voltage can pass through resistance Rg4 and electricity after the amplification of operational amplifier U3
Resistance Rg3 is adjusted so that the voltage of output is close in the range of the input voltage full scale of ADC.
By the CO concentration values acquired, concentration of natural gas value, the analog signal of granularity concentration value after ADC is handled,
Digital signal is converted to, and will be handled in the digital data transmission converted to control chip FPGA.
By IIC interfaces the temperature value that Temperature Humidity Sensor acquires is transferred at the control chip FPGA
Reason；By SPI interface so that OLED display module is communicated with control chip FPGA by SPI interface.
By the data transmission acquired to control chip FPGA, through control chip FPGA processing, judge CO concentration values,
Whether concentration of natural gas value, granularity concentration value and temperature and humidity value are more than threshold value, if one value of any of which is all more than threshold value
The alarm module that makes an immediate response is alarmed, without alarm if being no more than threshold value.
By control chip FPGA control by the CO concentration values acquired, concentration of natural gas value, granularity concentration value and
Temperature and humidity value is shown in OLED display module.
The foregoing is merely the preferred embodiments of invention, are not invented to limit, all spirit and original in invention
All any modification, equivalent and improvement made by within then etc., should be included within the protection domain of invention.
Claims (10)
1. a kind of kitchen safety monitoring system based on FPGA, which is characterized in that including：CO sensors, sensor of natural gas, ash
Dust sensor, Temperature Humidity Sensor, the 5th resistance Rshunt1, the 6th resistance Rshunt2, the first difference turn single-ended amplifier U1,
Second difference turns single-ended amplifier U2, operational amplifier U3, first resistor Rg1, second resistance Rg2,3rd resistor Rg3, the 4th
Resistance Rg4, ADC, control chip FPGA, power module, alarm module, OLED display module and optional expansion interface；
The CO sensors are connect with one end of the 5th resistance Rshunt1, another termination of the 5th resistance Rshunt1
Ground, two input terminals that first difference turns single-ended amplifier U1 are connect with the both ends of the 5th resistance Rshunt1 respectively, institute
The both ends for stating first resistor Rg1 turn an input terminal of single-ended amplifier U1 with first difference respectively and output end is connect, institute
It states the first difference and turns the output end of single-ended amplifier U1 and connect with the ADC；
The sensor of natural gas is connect with one end of the 6th resistance Rshunt2, and the 6th resistance Rshunt2's is another
End ground connection, two input terminals that second difference turns single-ended amplifier U2 connect with the both ends of the 6th resistance Rshunt2 respectively
It connects, the both ends of the second resistance Rg2 turn an input terminal of single-ended amplifier U2 with second difference respectively and output end connects
It connects, the output end that second difference turns single-ended amplifier U2 is connect with the ADC；
The dust sensor is connect with one end of the 4th resistance Rg4, the other end and the fortune of the 4th resistance Rg4
The input terminal connection of amplifier U3 is calculated, the both ends of the 3rd resistor Rg3 are connect with the both ends of the operational amplifier U3 respectively,
The output end of the operational amplifier U3 is connect with the ADC；
The Temperature Humidity Sensor, the ADC, the power module, the alarm module, the OLED display module and described
Optional expansion interface is all connect with the control chip FPGA.
2. a kind of kitchen safety monitoring system based on FPGA according to claim 1, which is characterized in that the control core
Piece FPGA is using the chip for not integrating stone.
3. a kind of kitchen safety monitoring system based on FPGA according to claim 1, which is characterized in that the humiture
Sensor is communicated with the control chip FPGA by IIC interfaces.
4. a kind of kitchen safety monitoring system based on FPGA according to claim 1, which is characterized in that the OLED is aobvious
Show that module is communicated with the control chip FPGA by SPI interface.
5. a kind of kitchen safety monitoring system based on FPGA according to claim 1, which is characterized in that the 5th electricity
Resistance Rshunt1 and the 6th resistance Rshunt2 is shunt resistance.
6. a kind of kitchen safety monitoring system based on FPGA according to claim 1, which is characterized in that first electricity
It is all adjustable resistor to hinder Rg1, the second resistance Rg2, the 3rd resistor Rg3 and the 4th resistance Rg4.
7. a kind of kitchen safety monitoring system based on FPGA according to claim 1, which is characterized in that the OLED is aobvious
That show mould OLED selections in the block is 0.96 size OLED.
8. a kind of kitchen safety monitoring system based on FPGA according to claim 1, which is characterized in that the control core
Piece FPGA uses efficient single port ROM administrative mechanisms.
9. a kind of kitchen safety monitoring system based on FPGA according to claim 1, which is characterized in that described optional
Expansion interface is reserved connection kitchen ventilator or wind turbine.
10. a kind of using a kind of kitchen method for safety monitoring based on FPGA of claim 1 to 9 any one of them, feature
It is, including：
The CO concentration values in kitchen are acquired by CO sensors, after the processing of the CO sensors, output current, electric current warp
After crossing the 5th resistance Rshunt1 so that the 5th resistance Rshunt1 obtains voltage, and voltage turns single-ended by the first difference and puts
After big device U1 amplifications, amplified single ended output voltage is obtained, the amplification factor of voltage can be adjusted by first resistor Rg1
Section so that the voltage of Single-end output is close in the range of the input voltage full scale of ADC；
The concentration of natural gas value in kitchen is acquired by sensor of natural gas, it is defeated after the processing of the sensor of natural gas
Go out electric current, electric current is after the 6th resistance Rshunt2 so that the 6th resistance Rshunt2 obtains voltage, and voltage passes through second
After difference turns single-ended amplifier U2 amplifications, amplified single ended output voltage is obtained, the amplification factor of voltage can pass through second
Resistance Rg2 is adjusted so that the voltage of Single-end output is close in the range of the input voltage full scale of ADC；
The granularity concentration value in kitchen is acquired by dust sensor, after the processing of the dust sensor, output electricity
Pressure, voltage export amplified voltage after the amplification of operational amplifier U3, and the amplification factor of voltage can pass through the 4th electricity
Resistance Rg4 and 3rd resistor Rg3 is adjusted so that the voltage of output is close in the range of the input voltage full scale of ADC；
By the CO concentration values acquired, concentration of natural gas value, the analog signal of granularity concentration value after ADC processing,
Digital signal is converted to, and will be handled in the digital data transmission converted to control chip FPGA；
The temperature value that Temperature Humidity Sensor acquires is made to be transferred to the control chip FPGA processing by IIC interfaces；
By the processing of the control chip FPGA, CO concentration values, concentration of natural gas value, granularity concentration value and humiture are judged
Whether value is more than threshold value, if one value of any of which is alarmed more than the threshold value alarm system that all makes an immediate response；
By the control of the control chip FPGA by the CO concentration values acquired, concentration of natural gas value, granularity concentration value and
Temperature and humidity value is shown in OLED display module.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810179981.9A CN108398902A (en) | 2018-03-05 | 2018-03-05 | A kind of kitchen safety monitoring system and method based on FPGA |
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| CN201810179981.9A CN108398902A (en) | 2018-03-05 | 2018-03-05 | A kind of kitchen safety monitoring system and method based on FPGA |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112767642A (en) * | 2020-12-14 | 2021-05-07 | 深圳市豪恩安全科技有限公司 | Double-light-source photoelectric smoke detector detection method, device and system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112767642A (en) * | 2020-12-14 | 2021-05-07 | 深圳市豪恩安全科技有限公司 | Double-light-source photoelectric smoke detector detection method, device and system |
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