Summary of the invention
In order to solve at least one above-mentioned technical problem, the invention proposes a kind of oil smoke concentration detection sensor and detectionsMethod.
To achieve the goals above, first aspect present invention proposes a kind of oil smoke concentration detection sensor, for detectingVia clarifier treated oil smoke concentration, the oil smoke concentration detection sensor includes: control module, detection module and communicationModule, the control module are electrically connected the detection module and the communication module；
The control module, the operating status for each module in oil smoke concentration detection sensor described in coordinated control；
The detection module, including light source, photodetector and signal processing unit, the light source are used for issuing detectionLight, a part detection light directly through behind oil smoke region to be detected is received and converted to first by the photodetectorElectric signal, another part detection light are reflected by the soot particles in oil smoke region, itself are received and turned by the light sourceThe second electric signal is turned to, the signal processing unit is used to do calculus of differences to first electric signal and the second electric signal, andOil smoke concentration value is calculated in conjunction with preset detection algorithm；
The communication module, under the action of the control module, oil smoke concentration that the detection module is detectedValue is transmitted to remote monitoring platform.
Further, the oil smoke concentration detection sensor further includes the first safety chip, and first safety chip is pre-It is equipped with digital certificate, the control module generates certification request instruction, and refers to the certification request by the communication moduleIt enables and digital certificate is sent to the remote monitoring platform together, the remote monitoring platform is according to the digital certificate to describedOil smoke concentration detection sensor carries out authentication processing.
Further, first safety chip is used to carry out Hash calculation to the oil smoke concentration value, and obtains firstDigest value；The oil smoke concentration value and the first digest value are sent to the remote monitoring platform by the communication module, described remoteRange monitoring platform carries out Hash calculation to the oil smoke concentration value received, and obtains the second digest value, compares first abstractWhether value is consistent with second digest value, is verified with the integrality to the oil smoke concentration value.
Further, the oil smoke concentration detection sensor further includes memory module and alarm, the memory module andThe alarm is electrically connected with the control module respectively；The memory module storage has oil smoke concentration discharge standard, describedIt is after control module receives the oil smoke concentration value that the detection module detects, the oil smoke concentration value and the oil smoke is denseDegree discharge standard is compared, to judge whether the oil smoke concentration value is exceeded, when the oil smoke concentration value is exceeded, and the controlMolding block controls the alarm and issues alarm signal.
Further, the control module is electrically connected at kitchen ventilator, and control of the control module to the kitchen ventilatorPermission processed is higher than the controller of the kitchen ventilator itself, and when the oil smoke concentration value is exceeded, the control of the kitchen ventilator is handed overBy the control module, and the kitchen ventilator is closed, until when the oil smoke concentration value is not exceeded, then the control of the kitchen ventilatorPower transfers to the controller of the kitchen ventilator itself.
Further, the communication module is also used to connect extraneous remote upgrade platform, the remote upgrade platform rootNew oil smoke concentration discharge standard is pushed to the oil smoke concentration detection sensor according to upgrading instruction, and described deposit is stored in replacementStore up expired in module or failure oil smoke concentration discharge standard.
Further, the detection module further includes two greasy dirt brushes and the first actuator, and first actuator is controlledIn the control module, and act on two greasy dirt brushes；The setting of one of greasy dirt brush is in the light source towards oil smoke to be detectedThe side in region, with for removing remaining greasy dirt on the light source, another greasy dirt brush is arranged in the photodetector courtTo the side in oil smoke region to be detected, for removing remaining greasy dirt on the photodetector；
The detection module further includes two greasy dirt lids and the second actuator, and second actuator is controlled by the controlModule, and act on two greasy dirt lids；The light source is arranged in towards the side in oil smoke region to be detected in one of greasy dirt lid,The cleannes of light source when keeping the oil smoke concentration detection sensor off position, another greasy dirt lid are arranged in the lightSide of the electric explorer towards oil smoke region to be detected, photoelectricity when keeping the oil smoke concentration detection sensor off positionThe cleannes of detector.
Further, the detection module is carried out according to oil smoke concentration of the preset detection algorithm to oil smoke region to be detectedDetection, the detection algorithm are as follows:Wherein x indicates that the extinction coefficient of oil smoke unit concentration, L indicate oil to be detectedThe thickness in cigarette district domain, I0It indicates incident intensity, that is, closes on the light intensity at the light source, I indicates that output intensity, i.e., the described photoelectricity are visitedSurvey the light intensity that device detects.
Second aspect of the present invention also proposes that a kind of oil smoke concentration detection method, the oil smoke concentration detection method include:
Receive oil smoke concentration detection instruction；
According to the oil smoke concentration detection instruction, opens light source and issue the light of detection；
A part detection light is received and converted to the first electricity by photodetector directly through behind oil smoke region to be detectedSignal, another part detection light are reflected by the soot particles in oil smoke region, itself are received and converted by the light sourceFor the second electric signal；
Calculus of differences is done to first electric signal and second electric signal by signal processing unit, and is combined defaultDetection algorithm oil smoke concentration value is calculated；
The oil smoke concentration value that will test is transmitted to remote monitoring platform.
Further, oil smoke concentration detection instruction is received, is specifically included:
Receive the oil smoke concentration detection instruction that remote monitoring platform is sent；And/or
The signal fed back when kitchen ventilator starting is received, and oil smoke concentration detection instruction is served as with the signal.
Oil smoke concentration detection sensor of the invention and detection method can be realized the accurate detection to oil smoke concentration, and nothingTesting staff is needed to be in the action the detection that can be realized to oil smoke concentration, high degree of automation.Meanwhile the present invention is also by oilSafety chip is implanted into smoke density detection sensor to ensure to be uploaded to the validity, complete of the oil smoke concentration value of remote monitoring platformWhole property effectively prevent user to distort the oil smoke concentration value that oil smoke concentration detection sensor detects, it is ensured that oil smoke is denseThe authenticity of angle value.
Additional aspect and advantage of the invention will provide in following description section, will partially become from the following descriptionObviously, or practice through the invention is recognized.
Specific embodiment
To better understand the objects, features and advantages of the present invention, with reference to the accompanying drawing and specific realApplying mode, the present invention is further described in detail.It should be noted that in the absence of conflict, the implementation of the applicationFeature in example and embodiment can be combined with each other.
In the following description, numerous specific details are set forth in order to facilitate a full understanding of the present invention, still, the present invention may be used alsoTo be implemented using other than the one described here other modes, therefore, protection scope of the present invention is not by described belowSpecific embodiment limitation.
Please refer to Fig. 1 to Fig. 3, first aspect present invention proposes a kind of oil smoke concentration detection sensor 10, for examiningIt surveys via treated the oil smoke concentration of clarifier 20, and judges whether the oil smoke concentration after purified treatment is up to standard.
In the specific application process, the oil smoke that kitchen or cooking zone generate is discharged by kitchen ventilator 30, and be conveyed to netChange device 20 and carry out purified treatment, oil smoke concentration detection sensor 10 can be set in the rear end of clarifier 30, in order to detect warpBy treated the oil smoke concentration of clarifier 30.
According to an embodiment of the invention, the oil smoke concentration detection sensor 10 includes: control module 11, detection module 12And communication module 13, the control module 11 are electrically connected the detection module 12 and the communication module 13；
The control module 11, the operation shape for each module in oil smoke concentration detection sensor 10 described in coordinated controlState；
The detection module 12, including light source 121, photodetector 123 and signal processing unit 124, the light source 121For issuing the light of detection, a part detection light directly through behind oil smoke region to be detected by the photodetector123 are received and converted to the first electric signal, and another part detection light is reflected by the soot particles in oil smoke region, by instituteState light source 121 and itself receive and be converted into the second electric signal, the signal processing unit 124 be used for first electric signal andSecond electric signal does calculus of differences, and oil smoke concentration value is calculated in conjunction with preset detection algorithm；
The communication module 13, under the action of the control module, the oil smoke that the detection module is detected is denseAngle value is transmitted to remote monitoring platform 40.
It should be noted that the light source 121 itself also carries photodetector, by the soot particles in oil smoke regionReflected detection light can be received by the photodetector that the light source 121 carries, and be converted into the second electric signal.The second electric signal is sent to signal processing unit 124 again later, via signal processing unit 124 to the first electric signal and secondThe calculus of differences of electric signal, that is, can reach the effect for weakening interference effect, further promoted precision that oil smoke concentration detect withSensitivity.
Preferably, light source 121 can use semiconductor laser, CO2Any one of laser, solid state laser, butIt is without being limited thereto.
Preferably, photodetector 123 can be semiconductor photo diode, phototriode, photocell and photoelectricity timesIncrease any one of pipe, but not limited to this.
According to an embodiment of the invention, signal processing unit 124 includes amplifier, subtracter and sample/hold circuit.InstituteIt states amplifier and receives faint the first electric signal and the second electric signal, in order to guarantee faint electric signal not by environment and intrinsicNoise is flooded, and electric (stream) signal is converted to voltage signal by the amplifier, and realization to the copped wave of signal, phase-detecting, amplification,The processing such as filtering.Above-mentioned two first voltage signal and second voltage signal exported from amplifier is input to subtracter, withObtain the differential signal of first voltage signal and second voltage signal.In analog signal conversion time, using the sampling/guarantorCircuit is held to keep range value of the signal in sampling constant.
It should be noted that after remote monitoring platform 40 receives the oil smoke concentration value, by the oil smoke concentration value withOil smoke concentration discharge standard is compared, and judges whether the oil smoke concentration value is up to standard, can be according to pre- if not up to standardFixed rule gives user's punishment.
According to an embodiment of the invention, the detection module 12 is according to preset detection algorithm to oil smoke region to be detectedOil smoke concentration is detected, the detection algorithm are as follows:Wherein x indicates the extinction coefficient of oil smoke unit concentration, LIndicate the thickness in oil smoke region to be detected, I0It indicates incident intensity, that is, closes on the light intensity at the light source 121, I indicates emergent lightBy force, i.e., the described photodetector 123 detects obtained light intensity.
It should be noted that the extinction coefficient x property (diameter, the oil smoke grains of such as soot particles with soot particlesThe refractive index etc. of son) it is related, and it is unrelated with oil smoke concentration.
According to an embodiment of the invention, the oil smoke concentration detection sensor 10 further includes the first safety chip 14, it is describedFirst safety chip 14 presets the digital certificate of oil smoke concentration detection sensor 10, and the control module 11 generates certification requestInstruction, and certification request instruction and digital certificate are sent to the long-range monitoring together and put down by the communication module 13Platform 40, the remote monitoring platform 40 carry out authentication processing to the oil smoke concentration detection sensor according to the digital certificate.If certification is unsuccessful, remote monitoring platform 40 is refused to receive the oil smoke concentration that the detection of oil smoke concentration detection sensor 10 obtainsValue, or evaluation up to standard is not made to the oil smoke concentration value received and handles work, so that it is guaranteed that 10 body of oil smoke concentration detection sensorThe legitimacy of part, avoids remote monitoring platform 40 from receiving the oil smoke concentration that illegal oil smoke concentration detection sensor is uploadedValue.
Further, remote monitoring platform 40 is built-in with the second safety chip (not shown), and second safety chip is pre-It is equipped with the digital certificate of remote monitoring platform 40, the digital certificate of itself is sent to oil smoke concentration by the remote monitoring platform 40Detection sensor 10, oil smoke concentration detection sensor 10 recognize remote monitoring platform 40 according to the digital certificate receivedCard, it is ensured that the oil smoke concentration value that oil smoke concentration detection sensor 10 will test is uploaded to legal remote monitoring platform 40.So far, two-way authentication is completed between oil smoke concentration detection sensor 10 and remote monitoring platform 40, and is passed through in two-way authenticationAfterwards, oil smoke concentration value can be securely transmitted to remote monitoring platform 40.
According to an embodiment of the invention, first safety chip 14 is by carrying out based on Hash the oil smoke concentration valueIt calculates, and obtains the first digest value；The oil smoke concentration value and the first digest value are sent to described long-range by the communication module 13Monitor supervision platform 40, the remote monitoring platform 40 carries out Hash calculation to the oil smoke concentration value received, and obtains the second abstractValue, compares first digest value and whether second digest value is consistent, is carried out with the integrality to the oil smoke concentration valueVerifying.
It should be noted that when the oil smoke concentration value that the detection of oil smoke concentration detection sensor 10 obtains is exceeded, Yong HukeCertain means modification oil smoke concentration value can be taken, and keeps modified oil smoke concentration value not exceeded, not exceeded oil smoke is denseAngle value is sent to remote monitoring platform 40, then the oil smoke that remote monitoring platform 40 then will mistakenly believe that discharge has met discharge standard,Cause the inaccuracy of monitoring；First safety chip 14 of the invention is after detection module 12 detects oil smoke concentration value, at onceHash calculation is carried out to the oil smoke concentration value, and obtains the first digest value.Even if user later again modifies oil smoke concentration valueAnd send remote monitoring platform 40 to, however remote monitoring platform 40 carries out Hash calculation according to modified oil smoke concentration value,The second digest value is obtained, and when the first digest value for comparing the second digest value with receiving is inconsistent, that is, can determine whether to receiveOil smoke concentration value be incomplete, and modified, remote monitoring platform 40 is to being currently received at oil smoke concentration value calcellationReason.
Further, the oil smoke concentration value and the first digest value to ensure to be uploaded to remote monitoring platform 40 are by correspondingWhat oil smoke concentration detection sensor 10 uploaded, which should also be to the oil smoke concentration value and firstDigest value is digitally signed processing.Specifically, the first safety chip 14 uses 10 digital certificate of oil smoke concentration detection sensorPrivate key the oil smoke concentration value and the first digest value are encrypted, and obtain signing messages.Communication module 13 is by instituteIt states signing messages and is sent to remote monitoring platform 40, the second safety chip of remote monitoring platform 40 is passed using oil smoke concentration detectionSigning messages is decrypted in the public key of 10 digital certificate of sensor, to carry out sign test processing to signing messages, when sign test success,Then illustrate the oil smoke concentration value received and the first digest value from corresponding oil smoke concentration detection sensor 10；When sign test notWhen success, then illustrate that the oil smoke concentration value received and the first digest value are sent from unknown third party.By signing,Sign test processing, to ensure that oil smoke concentration value that remote monitoring platform 40 receives and the first digest value are by corresponding oil smoke concentrationWhat detection sensor 10 was sent, prevent third party from assuming another's name to send oil smoke concentration value and the first digest value to remote monitoring platform40, cause the inaccuracy of monitoring.
According to an embodiment of the invention, the oil smoke concentration detection sensor 10 further includes memory module 15 and alarm16, the memory module 15 and the alarm 16 are electrically connected with the control module 11 respectively；The memory module 15 is depositedIt is placed with oil smoke concentration discharge standard, the control module 11 receives the detection module 12 and detects obtained oil smoke concentration valueAfterwards, the oil smoke concentration value is compared with the oil smoke concentration discharge standard, to judge whether the oil smoke concentration value surpassesMark, when the oil smoke concentration value is exceeded, the control module controls the alarm 16 and issues alarm signal, to prompt userNotice that the soot gas concentration of discharge is exceeded, and carries out purified treatment in time.
According to an embodiment of the invention, the control module 11 is electrically connected at kitchen ventilator 30, and the control module 11It is higher than the controller (not shown) of the kitchen ventilator 30 itself to the control authority of the kitchen ventilator 30, when the oil smoke concentration valueWhen exceeded, the control of the kitchen ventilator transfers to the control module, and closes the kitchen ventilator 30, until the oil smoke concentrationWhen being worth not exceeded, then the control of the kitchen ventilator 30 transfers to the controller of the kitchen ventilator 30 itself.
Whether control module 11 is exceeded according to the oil smoke concentration value that the detection of detection module 12 obtains, to control kitchen ventilator 30Operating status, and when oil smoke concentration value is exceeded, kitchen ventilator 30 is closed, so that underproof soot gas effectively be avoided to be discharged into greatlyIn gas, atmosphere pollution is caused.
According to an embodiment of the invention, the communication module 13 is also used to connect extraneous remote upgrade platform 50, it is describedRemote upgrade platform 50 pushes new oil smoke concentration discharge standard to the oil smoke concentration detection sensor 10 according to upgrading instruction,Expired in the memory module 15 or failure oil smoke concentration discharge standard is stored in replace.
Further, remote upgrade platform 50 is prefabricated with digital certificate, and using the private key of the digital certificate to new oilSmoke density discharge standard carries out ciphering signature processing, and obtains signing messages.Signing messages is sent to by remote upgrade platform 50Oil smoke concentration detection sensor 10, the first safety chip 14 is using the public key of 50 digital certificate of remote upgrade platform to the signatureSign test processing is decrypted in information, is verified with the source to new oil smoke concentration discharge standard, in order to avoid receive source notBright oil smoke concentration discharge standard.
According to an embodiment of the invention, the detection module 12 further includes that two greasy dirt brushes 125 and the first actuator (are schemed notShow), first actuator is controlled by the control module 11, and acts on two greasy dirt brushes 125；One of greasy dirt brush125 are arranged in side of the light source 121 towards oil smoke region to be detected, for removing remaining oil on the light source 121The photodetector 123 is arranged in towards the side in oil smoke region to be detected, with described for removing in dirt, another greasy dirt brushRemaining greasy dirt on photodetector 123；
The detection module 12 further includes two greasy dirt lids 126 and the second actuator (not shown), second actuatorIt is controlled by the control module 11, and acts on two greasy dirt lids 126；One of greasy dirt lid 126 is arranged in the light source 121Towards the side in oil smoke region to be detected, light source 121 when keeping 10 off position of oil smoke concentration detection sensorThe photodetector 123 is arranged in towards the side in oil smoke region to be detected, to keep in cleannes, another greasy dirt lid 126The cleannes of photodetector 123 when 19 off position of oil smoke concentration detection sensor.By the way that 125 He of greasy dirt brush is arrangedGreasy dirt lid 126 is further improved oil smoke concentration detection and is passed with the cleannes for the part that ensures to be in contact with greasy dirt region to be detectedThe precision of sensor 10.
Fig. 4 shows a kind of flow chart of oil smoke concentration detection method of the present invention.
As shown in figure 4, second aspect of the present invention also proposes that a kind of oil smoke using above-mentioned oil smoke concentration detection sensor is denseDetection method is spent, the oil smoke concentration detection method includes:
S401 receives oil smoke concentration detection instruction；
S402 opens light source and issues the light of detection according to the oil smoke concentration detection instruction；
S403, a part detection light are received and converted to the by photodetector directly through behind oil smoke region to be detectedOne electric signal, another part detection light are reflected by the soot particles in oil smoke region, are received simultaneously by the light source itselfIt is converted into the second electric signal；
S404 does calculus of differences to first electric signal and second electric signal by signal processing unit, and tiesIt closes preset detection algorithm and oil smoke concentration value is calculated；
S405, the oil smoke concentration value that will test are transmitted to remote monitoring platform.
According to an embodiment of the invention, receiving oil smoke concentration detection instruction, specifically include:
Receive the oil smoke concentration detection instruction that remote monitoring platform is sent；And/or
The signal fed back when kitchen ventilator starting is received, and oil smoke concentration detection instruction is served as with the signal
It should be noted that needing to start kitchen ventilator when discharging soot gas, using kitchen ventilator enabling signal as triggeringOil smoke concentration detection sensor carries out the instruction of detection oil smoke concentration.
After receiving oil smoke concentration detection instruction, oil smoke concentration detection sensor can carry out single according to detection instruction demandSecondary oil smoke concentration detection, i.e., often receive an oil smoke concentration detection instruction information, oil smoke concentration detection sensor can be detectedOil smoke concentration；Multiple oil smoke concentration loop cycle can also be carried out according to detection instruction demand to detect, i.e., ought receive oilAfter smoke density detection instruction information, oil smoke concentration detection sensor (can be examined after an hour according to the scheduled time cycle as everySurvey primary, daily set time point detection etc.) it is detected automatically.But not limited to this.
Third aspect present invention also proposes a kind of computer readable storage medium, wraps in the computer readable storage mediumA kind of oil smoke concentration detection method program is included, when the oil smoke concentration detection method program is executed by processor, is realized as above-mentionedA kind of oil smoke concentration detection method the step of.
Oil smoke concentration detection sensor of the invention and detection method can be realized the accurate detection to oil smoke concentration, and nothingTesting staff is needed to be in the action the detection that can be realized to oil smoke concentration, high degree of automation.Meanwhile the present invention is also by oilSafety chip is implanted into smoke density detection sensor to ensure to be uploaded to the validity, complete of the oil smoke concentration value of remote monitoring platformWhole property effectively prevent user to distort the oil smoke concentration value that oil smoke concentration detection sensor detects, it is ensured that oil smoke is denseThe authenticity of angle value.
In several embodiments provided herein, it should be understood that disclosed device and method can pass through itIts mode is realized.Apparatus embodiments described above are merely indicative, for example, the division of the unit, onlyA kind of logical function partition, there may be another division manner in actual implementation, such as: multiple units or components can combine, orIt is desirably integrated into another system, or some features can be ignored or not executed.In addition, shown or discussed each composition portionMutual coupling or direct-coupling or communication connection is divided to can be through some interfaces, the INDIRECT COUPLING of equipment or unitOr communication connection, it can be electrical, mechanical or other forms.
Above-mentioned unit as illustrated by the separation member, which can be or may not be, to be physically separated, aobvious as unitThe component shown can be or may not be physical unit；Both it can be located in one place, and may be distributed over multiple network listsIn member；Some or all of units can be selected to achieve the purpose of the solution of this embodiment according to the actual needs.
In addition, each functional unit in various embodiments of the present invention can be fully integrated in one processing unit, it can alsoTo be each unit individually as a unit, can also be integrated in one unit with two or more units；It is above-mentionedIntegrated unit both can take the form of hardware realization, can also realize in the form of hardware adds SFU software functional unit.
Those of ordinary skill in the art will appreciate that: realize that all or part of the steps of above method embodiment can pass throughThe relevant hardware of program instruction is completed, and program above-mentioned can store in computer-readable storage medium, which existsWhen execution, step including the steps of the foregoing method embodiments is executed；And storage medium above-mentioned includes: movable storage device, read-only depositsReservoir (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk orThe various media that can store program code such as CD.
If alternatively, the above-mentioned integrated unit of the present invention is realized in the form of software function module and as independent productWhen selling or using, it also can store in a computer readable storage medium.Based on this understanding, the present invention is implementedSubstantially the part that contributes to existing technology can be embodied in the form of software products the technical solution of example in other words,The computer software product is stored in a storage medium, including some instructions are used so that computer equipment (can be withIt is personal computer, server or network equipment etc.) execute all or part of each embodiment the method for the present invention.And storage medium above-mentioned includes: that movable storage device, ROM, RAM, magnetic or disk etc. are various can store program codeMedium.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, anyThose familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all containLid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.