CN109573770A - A kind of elevator operation monitoring system based on Internet of Things - Google Patents
A kind of elevator operation monitoring system based on Internet of Things Download PDFInfo
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- CN109573770A CN109573770A CN201811606422.8A CN201811606422A CN109573770A CN 109573770 A CN109573770 A CN 109573770A CN 201811606422 A CN201811606422 A CN 201811606422A CN 109573770 A CN109573770 A CN 109573770A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/0006—Monitoring devices or performance analysers
- B66B5/0018—Devices monitoring the operating condition of the elevator system
- B66B5/0031—Devices monitoring the operating condition of the elevator system for safety reasons
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Abstract
The present invention provides a kind of elevator operation monitoring system based on Internet of Things, utilize central processing unit, humidity sensor, signal processing circuit, rotary encoder, infrared sensor, image capture module, image processing module, comparison module, alarm, display, long-range monitoring side and electric power source pair of module elevator operation are monitored, humidity sensor is set to lift car top, for the moisture signal at the top of detecting elevator, rotary encoder is arranged on machine shaft by shaft coupling, to detect elevator speed, infrared sensor is set in lift car, infrared sensor is used to detect the infrared ray of human body sending, image capture module is set in lift car, for acquiring the image information in lift car, staff can know in real time elevator operation speed by display and long-range monitoring side Image information in degree, moisture signal, infrared signal and lift car.
Description
Technical field
The present invention relates to intelligence test fields more particularly to a kind of elevator operation based on Internet of Things to monitor system.
Background technique
According to " Code for design of dwelling houses " (standard No. GB of national house and town and country construction portion, State Administration of Quality Supervision, Inspection and Quarantine's joint publication
50096-2011), seven layers and seven layers or more houses must be provided with elevator U1.Meanwhile with the development of economy, the country many two to
There are also installed elevators for six layers of commercial building.China is introduced on a large scale from the elevator eighties in last century, according to statistics by 2017
The end of the year, the elevator total amount of China's installation are own through more than 9,000,000.Related data shows that China has become the big electricity of the first in the world
Terraced market.According to 20 years projected lives calculate, early stage installation elevator oneself through enter ageing stage.
Elevator accident occurs again and again, so that the safe operation problem of elevator has obtained the extensive concern of society.It is domestic at present
Most elevator only regularly checked and safeguarded, ability only out of joint is visited processing by maintenance personal.Due to electricity
Terraced distributed areas are generally relatively wider, and the efficiency of this way is not high.In addition, when accident occurs in elevator, often due to relief is not
Secondary injury is caused to stranded passenger in time.Therefore, it is very urgent that how research, which implements effective monitoring to elevator,.
Existing intelligence only passes through the electricity such as the speed of service to elevator based on the elevator operation monitoring system of Internet of Things
Parameter information in terraced operational process is to judge whether elevator breaks down in the process of running, such elevator based on Internet of Things
Not only measuring accuracy is not high for operating state monitoring system, and is easy to send erroneous judgement, so that staff cannot in time, accurately
Elevator is repaired and is rescued, it would be highly desirable to which elevator research staff develops a kind of high-precision elevator operation based on Internet of Things
Monitoring system.
Summary of the invention
Therefore, to solve the above-mentioned problems, the present invention provides a kind of elevator operation monitoring system based on Internet of Things,
Using central processing unit, humidity sensor, signal processing circuit, rotary encoder, infrared sensor, image capture module,
Image processing module, comparison module, alarm, display, long-range monitoring side and electric power source pair of module elevator operation carry out
Monitoring, humidity sensor are set to lift car top, for the moisture signal at the top of detecting elevator, by shaft coupling rotation
Encoder is arranged on machine shaft, and to detect elevator speed, infrared sensor is set in lift car, infrared biography
Sensor is used to detect the infrared ray of human body sending, and image capture module is set in lift car, for acquiring in lift car
Image information, staff can know in real time elevator speed, moisture signal, red by display and long-range monitoring side
Image information in outside line signal and lift car, it is possible thereby to comprehensively, accurately understand the state of elevator at runtime.
A kind of elevator operation based on Internet of Things according to the present invention monitors system comprising central processing unit,
Humidity sensor, signal processing circuit, rotary encoder, infrared sensor, image capture module, image processing module, comparison
Module, alarm, display, long-range monitoring side and power module.
Wherein, the output end of humidity sensor and the input terminal of signal processing circuit connect, the output of signal processing circuit
End is connect with the input terminal of central processing unit, and the output end of rotary encoder and the input terminal of central processing unit connect, red
The output end of outer sensor and the input terminal of central processing unit connect, the output end and image processing module of image capture module
Input terminal connection, the input terminal of the output end of image processing module and central processing unit connects, the input terminal of display with
The output end of central processing unit connects, and the input terminal of comparison module and the output end of central processing unit connect, comparison module
Output end and the input terminal of alarm connect, central processing unit connect with long-range monitoring side wireless telecommunications.
Humidity sensor is set to lift car top, for the moisture signal at the top of detecting elevator, passes through shaft coupling handle
Rotary encoder is arranged on machine shaft, and to detect elevator speed, infrared sensor is set in lift car, red
Outer sensor is used to detect the infrared ray of human body sending, and image capture module is set in lift car, for acquiring elevator car
Image information in compartment, power module monitor system for the elevator operation based on Internet of Things and provide electric power support.
Preferably, rotary encoder is arranged on machine shaft by shaft coupling, to detect elevator speed,
Elevator speed is transmitted to comparison module by central processing unit, and comparison module is by the elevator speed received and storage
It is compared in the pre-set velocity threshold value in comparison module, if the elevator speed that comparison module receives, which is greater than, is stored in ratio
To the pre-set velocity threshold value in module, then comparison module control alarm sends warning message；Humidity sensor is set to elevator
Carriage top is transmitted to signal processing circuit, signal processing electricity for the moisture signal at the top of detecting elevator, and by moisture signal
Road successively carries out signal amplification and signal filtering processing to the moisture signal received, and signal is transmitted to center by treated
Processing unit；Infrared sensor is set in lift car, and infrared sensor is used to detect the infrared ray of human body sending, and will inspection
It surveys signal and is transmitted to central processing unit, image capture module is set in lift car, for acquiring the figure in lift car
As information, and acquired image information is transmitted to image processing module, image processing module is to the image information received
Successively carry out image enhancement, image sharpening, image smoothing and image noise reduction processing, image processing module will treated image
Information is transmitted to central processing unit, and central processing unit is by the elevator speed received, moisture signal, infrared signal
And image information is transmitted to display and is shown, central processing unit by the elevator speed received, moisture signal,
Infrared signal and image information pass through antenna transmission to long-range monitoring side.
Preferably, humidity sensor is set to lift car top, for the moisture signal at the top of detecting elevator, will adopt
The moisture signal of collection is converted to voltage signal V0, and voltage signal V0 is transmitted to signal processing circuit, V1 be by signal at
Voltage signal after managing processing of circuit, signal processing circuit includes signal amplification unit and signal filter unit, humidity sensor
Output end and the input terminal of signal amplification unit connect, the input terminal of the output end of signal amplification unit and signal filter unit
Connection, the output end of signal filter unit and the ADC port end of central processing unit connect.
Preferably, signal amplification unit includes integrated transporting discharging A1-A3, resistance R1-R14, capacitor C1-C5 and triode
T1-T4；
Wherein, the output end of humidity sensor is connect with the base stage of triode T1, and one end ground connection of capacitor C1, capacitor C1's is another
End connect with one end of resistance R1, the output end of humidity sensor is also connect with the other end of resistance R1, one end of resistance R2 and
One end of capacitor C2 connects, and the other end of resistance R2 is connect with one end of resistance R1, the other end and integrated transporting discharging A2 of capacitor C2
Output end connection, one end of resistance R2 also connect with the inverting input terminal of integrated transporting discharging A2, the other end of capacitor C2 also with electricity
One end connection of R3 is hindered, the other end of resistance R3 is connect with the base stage of triode T2, and one end ground connection of capacitor C3, capacitor C3's is another
One end is connect with the base stage of triode T2, and one end of resistance R4 is connect with -15V power supply, the other end and triode T2 of resistance R4
Emitter connection, one end of resistance R5 connect with the collector of triode T1, the other end of resistance R5 and the hair of triode T1
Emitter-base bandgap grading connection, the emitter of triode T1 connect with+15V power supply, and the collector of triode T1 is same mutually defeated with integrated transporting discharging A1's
Enter end connection, the reverse inter-input-ing ending grounding of integrated transporting discharging A1, the collector of triode T2 and the non-inverting input terminal of integrated transporting discharging A1
Connection, one end of resistance R6 are connect with one end of resistance R4, and the other end of resistance R6 is connect with the collector of triode T2, resistance
One end of R7 is connect with one end of resistance R4, and the other end of resistance R7 is connect with the emitter of triode T4, one end of resistance R8
Connect with the emitter of triode T3, the other end of resistance R8 is connect with the emitter of triode T1, the base stage of triode T3 with
One end of resistance R5 connects, and the base stage of triode T4 is connect with the other end of resistance R6, the output end and resistance of integrated transporting discharging A1
One end of R9 connects, and the other end of resistance R9 is connect with the output end of integrated transporting discharging A3, one end ground connection of capacitor C4, capacitor C4's
The other end is connect with one end of resistance R10, and one end of resistance R10 is connect with the collector of triode T4, the other end of resistance R10
It is connect with the non-inverting input terminal of integrated transporting discharging A3, the reverse inter-input-ing ending grounding of integrated transporting discharging A3, one end ground connection of capacitor C5, capacitor
The other end of C5 is connect with the non-inverting input terminal of integrated transporting discharging A2, one end of resistance R11 and the non-inverting input terminal of integrated transporting discharging A2
Connection, one end ground connection of resistance R12, the other end of resistance R11 connect with the other end of resistance R12, the other end of resistance R12 and
One end of resistance R13 connects, and the other end of resistance R13 connect with the output end of integrated transporting discharging A3, one end of resistance R14 with integrate
The output end of amplifier A3 connects, and the other end of resistance R14 is connect with the input terminal of signal filter unit.
Preferably, signal filter unit includes resistance R15-R21, capacitor C6-C7 and integrated transporting discharging A4-A6；
Wherein, the output end of signal amplification unit is connect with one end of resistance R15, the other end of resistance R15 and the one of resistance R17
It being connect after end is in parallel with the non-inverting input terminal of integrated transporting discharging A4, the other end of resistance R17 is connect with the output end of integrated transporting discharging A4,
One end of resistance R16 is grounded, and is connect after the other end of resistance R16 is in parallel with resistance R21 with the non-inverting input terminal of integrated transporting discharging A4,
The other end of resistance R21 is connect with the output end of integrated transporting discharging A4, and the output end of the other end of resistance R17 and integrated transporting discharging A4 are simultaneously
It is connect after connection with one end of resistance R18, the reverse phase after the other end of resistance R18 is in parallel with one end of capacitor C6 with integrated transporting discharging A5
Input terminal connection connect with one end of resistance R19 after the other end of capacitor C6 is in parallel with the output end of integrated transporting discharging A5, integrates fortune
The non-inverting input terminal ground connection of A5 is put, it is defeated with the reverse phase of integrated transporting discharging A6 after the other end of resistance R19 is in parallel with one end of capacitor C7
Enter end connection, the non-inverting input terminal ground connection of integrated transporting discharging A6, the other end of capacitor C7 is connect with the output end of integrated transporting discharging A6, electricity
One end of resistance R20 is connect with the inverting input terminal of integrated transporting discharging A4, and the other end of resistance R20 and the output end of integrated transporting discharging A6 connect
It connects, one end of resistance R21 is connect with the non-inverting input terminal of integrated transporting discharging A4, and the other end of resistance R21 is defeated with integrated transporting discharging A5's
Outlet connection, the output end of integrated transporting discharging A6 and the port ADC of central processing unit connect, and signal processing unit will treated
Voltage signal V1 is transmitted to the port ADC of central processing unit.
Preferably, image processing module includes image enhancing unit, image sharpening unit, image smoothing unit and figure
As noise reduction unit.
Wherein, image capture module is used to acquire image information in lift car, the output end of image capture module with
The input terminal of image enhancing unit connects, and the output end of image enhancing unit is connect with the input terminal of image sharpening unit, image
The output end for sharpening unit is connect with the input terminal of image smoothing unit, the output end and image noise reduction unit of image smoothing unit
Input terminal connection, the input terminal of the output end of image noise reduction unit and central processing unit connects.
It preferably, is two-dimensional function f (x, y) by the image definition that image capture module is transmitted to image processing module,
Wherein x, y are space coordinates, and image enhancing unit carries out image definition enhancing processing to image f (x, y), by image enhancement
Treated, and two-dimensional image function is g (x, y), wherein
。
Preferably, image sharpening unit carries out image sharpening processing to image g (x, y), after image sharpening is handled
Two-dimensional image function be h (x, y), wherein
。
Preferably, image smoothing unit carries out picture smooth treatment to image h (x, y), after picture smooth treatment
Two-dimensional image function be d (x, y), smooth function be q (x, y), wherein
；
；
Wherein , ﹡ is convolution symbol,For customized adjustable constant, smooth effect is to pass throughCome what is controlled.
Preferably, image noise reduction unit carries out image noise reduction processing to image d (x, y), after image noise reduction is handled
Two-dimensional image function be s (x, y),
；
Image s (x, y) is transmitted to central processing unit by image noise reduction unit.
Compared with prior art, the present invention have it is following the utility model has the advantages that
(1) elevator operation provided by the invention based on Internet of Things monitors system, utilizes central processing unit, humidity sensor
Device, signal processing circuit, rotary encoder, infrared sensor, image capture module, image processing module, comparison module, alarm
Device, display, long-range monitoring side and electric power source pair of module elevator operation are monitored, and humidity sensor is set to elevator car
Compartment top end rotary encoder is arranged on machine shaft for the moisture signal at the top of detecting elevator by shaft coupling, to
Elevator speed is detected, infrared sensor is set in lift car, and infrared sensor is used to detect the infrared of human body sending
Line, image capture module are set in lift car, and for acquiring the image information in lift car, staff can pass through
The figure in elevator speed, moisture signal, infrared signal and lift car is known in display and long-range monitoring side in real time
As information, it is possible thereby to comprehensively, accurately understand the state of elevator at runtime.
(2) elevator operation provided by the invention based on Internet of Things monitors system, and image processing module is to acquisition
Image successively carry out image enhancement, image sharpening, image smoothing, image noise reduction processing, can efficiently, quickly extract Image Acquisition
The identification precision to image in lift car can be improved in the image information of module, efficiently reduces erroneous judgement and happens.
(3) since the signal of humidity sensor acquisition is faint voltage signal, thus signal amplification unit is by integrating
Amplifier A1-A3, resistance R1-R14, capacitor C1-C5 and triode T1-T4 amplify the voltage V0 that humidity sensor exports
Processing, the signal amplification unit being made of integrated transporting discharging A1-A3, resistance R1-R14, capacitor C1-C5 and triode T1-T4 is only
Have offset within the drift of 0.2 μ V/ DEG C, 2 μ V, in 100pA bias current and the broadband 0.1Hz to 10Hz 20nV noise.Its
In, signal filter unit is believed using resistance R15-R21, capacitor C6-C7 and integrated transporting discharging A4-A6 by amplified voltage
Number carry out low-pass filtering treatment, to improve the precision of Humidity Detection.
Below by drawings and examples, technical scheme of the present invention will be described in further detail.
Detailed description of the invention
Fig. 1 is the schematic diagram that the elevator operation of the invention based on Internet of Things monitors system；
Fig. 2 is the circuit diagram of signal processing circuit of the invention；
Fig. 3 is the schematic diagram of image processing module of the invention.
Appended drawing reference:
1- central processing unit；2- humidity sensor；3- signal processing circuit；4- rotary encoder；5- infrared sensor；6- figure
As acquisition module；7- image processing module；8- comparison module；9- alarm；10- display；The long-range monitoring side 11-；12- power supply
Module.
Specific embodiment
With reference to the accompanying drawings and examples elevator operation to provided by the invention based on Internet of Things monitor system into
Row is described in detail.
As shown in Figure 1, the elevator operation monitoring system based on Internet of Things includes central processing unit 1, humidity sensor
Device 2, rotary encoder 4, infrared sensor 5, image capture module 6, image processing module 7, compares mould at signal processing circuit 3
Block 8, alarm 9, display 10, long-range monitoring side 11 and power module 12.
Wherein, the output end of humidity sensor 2 is connect with the input terminal of signal processing circuit 3, signal processing circuit 3 it is defeated
Outlet is connect with the input terminal of central processing unit 1, and the output end of rotary encoder 4 and the input terminal of central processing unit 1 connect
It connects, the output end of infrared sensor 5 is connect with the input terminal of central processing unit 1, the output end and image of image capture module 6
The input terminal of processing module 7 connects, and the output end of image processing module 7 is connect with the input terminal of central processing unit 1, display
10 input terminal is connect with the output end of central processing unit 1, the output of the input terminal and central processing unit 1 of comparison module 8
End connection, the output end of comparison module 8 are connect with the input terminal of alarm 9, and central processing unit 1 and long-range monitoring side 11 are wireless
Communication connection.
Humidity sensor 2 is set to lift car top, for the moisture signal at the top of detecting elevator, passes through shaft coupling handle
Rotary encoder 4 is arranged on machine shaft, and to detect elevator speed, infrared sensor 5 is set in lift car,
Infrared sensor 5 is used to detect the infrared ray of human body sending, and image capture module 6 is set in lift car, for acquiring electricity
Image information in terraced carriage, power module 12 monitor system for the elevator operation based on Internet of Things and provide electric power support.
In above embodiment, the elevator operation provided by the invention based on Internet of Things monitors system, utilizes center
Processing unit 1, humidity sensor 2, signal processing circuit 3, rotary encoder 4, infrared sensor 5, image capture module 6, figure
As processing module 7, comparison module 8, alarm 9, display 10, long-range monitoring side 11 and power module 12 run shape to elevator
State is monitored, and humidity sensor 2 is set to lift car top, for the moisture signal at the top of detecting elevator, passes through shaft coupling
Device rotary encoder 4 is arranged on machine shaft, and to detect elevator speed, infrared sensor is set to lift car
Interior, infrared sensor 5 is used to detect the infrared ray of human body sending, and image capture module is set in lift car, for acquiring
Image information in lift car, staff can know in real time elevator operation speed by display 10 and long-range monitoring side 11
Image information in degree, moisture signal, infrared signal and lift car is being transported it is possible thereby to comprehensively, accurately understand elevator
State when row.
Long-range monitoring side 11 can be the mobile communication equipments such as the portable mobile phone of staff.
To in the velocity test of elevator, elevator speed test module is mainly by stepper motor module and 4 groups of rotary encoder
Drive elevator operation at, stepper motor, rotary encoder 4 is used to measure elevator speed, rotary encoder mainly by grating,
Light source, reviewing device, signal conversion circuit, machine driving etc., part forms.When 4 axis of rotary encoder drives grating disc spins,
The light issued through light-emitting component is cut into interrupted light by grating disc slit, and is received element and receives generation initial signal.It should
Displacement is converted into periodic electric signal after subsequent processing of circuit by signal, then this electric signal is transformed into counting pulse,
The size of displacement is indicated with the number of pulse.Pulse is exported when rotary encoder 4 is to rotate, it is known by counting equipment
Position is remembered by the memory internal of counting equipment when encoder is motionless or has a power failure in position.System receives electric signal
Afterwards, by the statistics to pulse signal, corresponding motor operation angular speed is calculated, further according to the relationship of angular amount and line amount, is divided
The real-time speed and acceleration of elevator operation are not calculated, to realize the collection to elevator information.
Whether elevator closes severity when people determines Lift out of order, it is therefore desirable to carry out human body detection.Due to
For the body temperature of people generally at 37 degree or so, such human body can issue wavelength in the infrared ray of 10 microns.Infrared biography can be passed through
Sensor detects infrared ray, detects human body with this.
Infrared sensor is specially passive pyroelectric infrared sensor.
Pyroelectric infrared sensor is mainly admired by the mistake of high Seebeck coefficient, and lead plumbate system is ceramic and button acid clang, sulfuric acid three are sweet
By the emperor himself etc., in addition filter glass window forms.It can detect that object radiates the infrared ray come in a non-contact manner, and simultaneously
Convert thereof into electric signal output.
The front of pyroelectric infrared sensor also need an optical lens (also referred to as Fresnel Lenses) by infrared ray into
Line focusing.Test shows that Fresnel Lenses is not added in sensor, and detecting distance is less than 2m, and plus after optical lens, it detects
Distance can be greater than 6m.
Passive pyroelectric infrared sensor concrete model is RE200B pyroelectric infrared sensor.
RE200B pyroelectric infrared sensor output end in static state exports low level, when detection has to physical activity,
Output end exports high level, and is able to maintain a period of time.
Specifically, rotary encoder 4 is arranged on machine shaft by shaft coupling, to detect elevator speed,
Elevator speed is transmitted to comparison module 8 by central processing unit 1, comparison module 8 by the elevator speed received with
The pre-set velocity threshold value being stored in comparison module 8 is compared, and is deposited if the elevator speed that comparison module 8 receives is greater than
The pre-set velocity threshold value being stored in comparison module 8, then comparison module 8 controls alarm 9 and sends warning message；Humidity sensor 2
It is set to lift car top, is transmitted to signal processing circuit for the moisture signal at the top of detecting elevator, and by moisture signal
3, signal processing circuit 3 successively carries out signal amplification and signal filtering processing to the moisture signal received, and by treated
Signal is transmitted to central processing unit 1；Infrared sensor 5 is set in lift car, and infrared sensor 5 is for detecting human body hair
Infrared ray out, and will test signal and be transmitted to central processing unit 1, image capture module 6 is set in lift car, is used for
The image information in lift car is acquired, and acquired image information is transmitted to image processing module 7, image processing module
7 pairs of image informations received successively carry out image enhancement, image sharpening, image smoothing and image noise reduction and handle, at image
By treated, image information is transmitted to central processing unit 1 to reason module 7, and central processing unit 1 runs the elevator received
Speed, moisture signal, infrared signal and image information are transmitted to display 10 and are shown, central processing unit 1 will connect
Elevator speed, moisture signal, infrared signal and the image information received passes through antenna transmission to long-range monitoring side 11.
As shown in Fig. 2, humidity sensor 2 is set to lift car top, it, will for the moisture signal at the top of detecting elevator
The moisture signal of acquisition is converted to voltage signal V0, and voltage signal V0 is transmitted to signal processing circuit 3, and V1 is by signal
Treated the voltage signal of processing circuit 3, signal processing circuit 3 include signal amplification unit and signal filter unit, and humidity passes
The output end of sensor 2 and the input terminal of signal amplification unit connect, output end and the signal filter unit of signal amplification unit
Input terminal connection, the output end of signal filter unit are connect with the ADC port end of central processing unit 1.
Specifically, signal amplification unit includes integrated transporting discharging A1-A3, resistance R1-R14, capacitor C1-C5 and triode
T1-T4。
Wherein, the output end of humidity sensor 2 is connect with the base stage of triode T1, one end ground connection of capacitor C1, capacitor C1
The other end connect with one end of resistance R1, the output end of humidity sensor 2 is also connect with the other end of resistance R1, resistance R2's
One end is connect with one end of capacitor C2, and the other end of resistance R2 is connect with one end of resistance R1, the other end of capacitor C2 and integrated
The output end of amplifier A2 connects, and one end of resistance R2 is also connect with the inverting input terminal of integrated transporting discharging A2, the other end of capacitor C2
It is also connect with one end of resistance R3, the other end of resistance R3 is connect with the base stage of triode T2, one end ground connection of capacitor C3, capacitor
The other end of C3 is connect with the base stage of triode T2, and one end of resistance R4 is connect with -15V power supply, the other end of resistance R4 and three
The emitter of pole pipe T2 connects, and one end of resistance R5 is connect with the collector of triode T1, the other end and triode of resistance R5
The emitter of T1 connects, and the emitter of triode T1 is connect with+15V power supply, and the collector of triode T1 is with integrated transporting discharging A1's
Non-inverting input terminal connection, the reverse inter-input-ing ending grounding of integrated transporting discharging A1, the same phase of the collector and integrated transporting discharging A1 of triode T2
Input terminal connection, one end of resistance R6 are connect with one end of resistance R4, and the other end of resistance R6 and the collector of triode T2 connect
It connects, one end of resistance R7 is connect with one end of resistance R4, and the other end of resistance R7 is connect with the emitter of triode T4, resistance R8
One end connect with the emitter of triode T3, the other end of resistance R8 is connect with the emitter of triode T1, triode T3's
Base stage is connect with one end of resistance R5, and the base stage of triode T4 is connect with the other end of resistance R6, the output end of integrated transporting discharging A1
It is connect with one end of resistance R9, the other end of resistance R9 is connect with the output end of integrated transporting discharging A3, one end ground connection of capacitor C4, electricity
The other end for holding C4 is connect with one end of resistance R10, and one end of resistance R10 is connect with the collector of triode T4, resistance R10's
The other end is connect with the non-inverting input terminal of integrated transporting discharging A3, the reverse inter-input-ing ending grounding of integrated transporting discharging A3, a termination of capacitor C5
The other end on ground, capacitor C5 is connect with the non-inverting input terminal of integrated transporting discharging A2, one end of resistance R11 and the same phase of integrated transporting discharging A2
Input terminal connection, one end ground connection of resistance R12, the other end of resistance R11 are connect with the other end of resistance R12, and resistance R12's is another
One end is connect with one end of resistance R13, and the other end of resistance R13 is connect with the output end of integrated transporting discharging A3, one end of resistance R14
It is connect with the output end of integrated transporting discharging A3, the other end of resistance R14 is connect with the input terminal of signal filter unit.
Specifically, signal filter unit includes resistance R15-R21, capacitor C6-C7 and integrated transporting discharging A4-A6.
Wherein, the output end of signal amplification unit is connect with one end of resistance R15, the other end and resistance R17 of resistance R15
One end it is in parallel after connect with the non-inverting input terminal of integrated transporting discharging A4, the other end of resistance R17 and the output end of integrated transporting discharging A4
Connection, one end ground connection of resistance R16, the non-inverting input terminal after the other end of resistance R16 is in parallel with resistance R21 with integrated transporting discharging A4
Connection, the other end of resistance R21 connect with the output end of integrated transporting discharging A4, and the other end of resistance R17 is defeated with integrated transporting discharging A4's
Connect after outlet is in parallel with one end of resistance R18, after the other end of resistance R18 is in parallel with one end of capacitor C6 with integrated transporting discharging A5
Inverting input terminal connection, the other end of capacitor C6 connect with after the parallel connection of the output end of integrated transporting discharging A5 with one end of resistance R19,
The non-inverting input terminal of integrated transporting discharging A5 is grounded, with integrated transporting discharging A6's after the other end of resistance R19 is in parallel with one end of capacitor C7
Inverting input terminal connection, the non-inverting input terminal ground connection of integrated transporting discharging A6, the other end of capacitor C7 and the output end of integrated transporting discharging A6
Connection, one end of resistance R20 are connect with the inverting input terminal of integrated transporting discharging A4, and the other end of resistance R20 is with integrated transporting discharging A6's
Output end connection, one end of resistance R21 are connect with the non-inverting input terminal of integrated transporting discharging A4, the other end of resistance R21 and integrated fortune
The output end connection of A5 is put, the output end of integrated transporting discharging A6 is connect with the port ADC of central processing unit 1, signal processing unit
By the port ADC of treated voltage signal V1 is transmitted to central processing unit 1.
In above embodiment, in above embodiment, for the noise of signal processing circuit 3 within 20nV, drifting about is 0.2
μ V/ DEG C, integrated transporting discharging A1 and A3 are LT1010 low drifting amplifier, and integrated transporting discharging A2 is LTC1150 low drifting amplifier, are integrated
Amplifier A4, A5 and A6 are LT1097 amplifier, since the direct current offset of integrated transporting discharging A1-A3 and drift will not influence circuit
Overall offset, so that circuit has extremely low offset and drift.
Signal amplification unit has more than the small signal bandwidth of 20MHz, and the feedback partial pressure of resistance R12 and resistance R13 are fed to
Integrated transporting discharging A2, intrinsic standoff ratio is equal with the gain scale of circuit, is in the present embodiment 10.
In signal amplification unit, when gain is between 1-20, small signal bandwidth is more than 20MHz, in signal amplification unit
Loop it is quite stable, and the capacitor C4 of integrated transporting discharging A3 non-inverting input terminal provides preferable resistance in wider gain ranging
Buddhist nun.
In the signal processing circuit, the resistance value of resistance R1 is 10M Ω, and the resistance value of resistance R2 is 1K Ω, the resistance value of resistance R3
It is resistance value for 10K Ω, resistance R4 is 330 Ω, the resistance value of resistance R5 is 33 Ω, and the resistance value of R6 is 33 Ω, and the resistance value of resistance R7 is
The resistance value of 68 Ω, resistance R8 are 68 Ω, and the resistance value of resistance R9 is 470 Ω, and the resistance value of resistance R10 is 1K Ω, the resistance value of resistance R11
For 10M Ω, the resistance value of resistance R12 is 1K Ω, and the resistance value of resistance R13 is 9K Ω, and the resistance value of resistance R14 is 5.1K Ω, resistance R15
Resistance value be 1.7K Ω, the resistance value of resistance R16 is 4.7K Ω, and the resistance value of resistance R17 is 10K Ω, and the resistance value of resistance R18 is 5K
The resistance value of Ω, resistance R19 are 1K Ω, and the resistance value of resistance R20 is 5K Ω, and the resistance value of resistance R21 is 5K Ω, the resistance value of resistance R22
For 1K Ω, the capacitance of C1 is 10pF, and the capacitance of C2 is 50pF, and the capacitance of C3 is 10pF, and the capacitance of C4 is 10pF,
The capacitance of C5 is 60pF, and the capacitance of C6 is 390pF, and the capacitance of capacitor C7 is 470pF, the model of triode T1 and T2
2N3904, the model 2N2219 of triode T3 and T4.
Since the signal that humidity sensor 2 acquires is faint voltage signal, thus signal amplification unit passes through integrated fortune
The voltage V0 that A1-A3, resistance R1-R14, capacitor C1-C5 and triode T1-T4 export humidity sensor 2 is put to amplify
Processing, the signal amplification unit being made of integrated transporting discharging A1-A3, resistance R1-R14, capacitor C1-C5 and triode T1-T4 is only
Have offset within the drift of 0.2 μ V/ DEG C, 2 μ V, in 100pA bias current and the broadband 0.1Hz to 10Hz 20nV noise.Its
In, signal filter unit is believed using resistance R15-R21, capacitor C6-C7 and integrated transporting discharging A4-A6 by amplified voltage
Number carry out low-pass filtering treatment, to improve the precision of Humidity Detection.
As shown in figure 3, image processing module 7 include image enhancing unit, image sharpening unit, image smoothing unit and
Image noise reduction unit.
Wherein, image capture module 6 is used to acquire the image information in lift car, the output end of image capture module 6
It is connect with the input terminal of image enhancing unit, the output end of image enhancing unit is connect with the input terminal of image sharpening unit, figure
Output end as sharpening unit is connect with the input terminal of image smoothing unit, the output end and image noise reduction list of image smoothing unit
The input terminal connection of member, the output end of image noise reduction unit are connect with the input terminal of central processing unit 1.
In above embodiment, the image of 7 pairs of image processing module acquisitions successively carries out image enhancement, image sharpening, figure
As smooth, image noise reduction processing, the image information of image capture module 6 can efficiently, be quickly extracted, can be improved to lift car
The identification precision of interior image efficiently reduces erroneous judgement and happens.
System is monitored at runtime in the elevator operation provided by the invention based on Internet of Things, and staff passes through aobvious
Show that device 10 and long-range monitoring side 11 are known in real time in elevator speed, moisture signal, infrared signal and lift car
Image information, with pair elevator operation understood in real time, site environment can be understood in time in the event of a failure, with improve
Scene carries out handling/troubleshooting efficiency.
It specifically, is two-dimensional function f (x, y) by the image definition that image capture module 6 is transmitted to image processing module 7,
Wherein x, y are space coordinates, and image enhancing unit carries out image definition enhancing processing to image f (x, y), by image enhancement
Treated, and two-dimensional image function is g (x, y), wherein
。
In above embodiment, the purpose of image intensification unit is the image in order to improve the acquisition of image capture module 6
Quality removes the noise in image, makes edge clear, improve the interpretability of image.
Specifically, image sharpening unit carries out image sharpening processing to image g (x, y), and by image sharpening, treated
Two-dimensional image function is h (x, y), wherein
。
In above embodiment, the profile of image of the image sharpening unit compensation after image enhancement processing, enhancing figure
The edge of picture and the part of Gray Level Jump, become more fully apparent image.
Specifically, image smoothing unit carries out picture smooth treatment to image h (x, y), after picture smooth treatment
Two-dimensional image function is d (x, y), and smooth function is q (x, y), wherein
；
；
Wherein , ﹡ is convolution symbol,For customized adjustable constant, smooth effect is to pass throughCome what is controlled.
In above embodiment, image smoothing unit will be carried out by image sharpening treated brightness of image it is gentle gradually
Become, reduces mutation gradient, so as to improve picture quality.
Specifically, image noise reduction unit carries out image noise reduction processing to image d (x, y), and by image noise reduction, treated
Two-dimensional image function is s (x, y),
；
In above embodiment, the purpose of image intensification unit is the quality in order to improve the image of the acquisition of image capture module 6,
The noise in image is removed, makes edge clear, improves the interpretability of image.
Image s (x, y) is transmitted to central processing unit 1 by image noise reduction unit.
In the present embodiment, the elevator operation monitoring system provided by the invention based on Internet of Things is based on CC2430 core
Piece, it combines a high-performance 2.4GHzDSSS(Direct Sequence Spread Spectrum) the flash storage of RF transceiver core and 128K, this
Humidity sensor 2, rotary encoder 4 and infrared sensor 5 are all connected to (wherein, humidity sensor on CC2430 chip by system
Device 2 is connected on CC2430 chip by signal processing circuit 3) it, can be with so that sensor node has the function of a variety of variables
A variety of sensing datas are sampled simultaneously, and are sent.
CC2430 chip further includes an ECP Extended Capabilities Port, facilitates the other sensors needed for increasing.
Such as carbon dioxide sensor can be increased, and carbon dioxide sensor is set in carriage, carbon dioxide passes
The output end of sensor is connect with the input terminal of central processing unit 1, and carbon dioxide sensor is used to monitor the titanium dioxide in carriage
Concentration of carbon information for another example can increase voltage sensor, and voltage sensor is used to detect the information of voltage of elevator at runtime,
The output end of voltage sensor is connect with the input terminal of central processing unit 1, additionally it is possible to increase the test elevator such as current sensor
The sensor of operating status.
CC2430 chip further includes a USB interface, and Zigbee protocol stack is burnt to CC2430 chip by the USB interface
After flash storage, reset chip, CC2430 chip brings into operation Zigbee protocol stack, and it is entire that protocol stack first participates in node
Then the foundation and configuration of network, CC2430 chip read in the measured value of sensor, and send data to radio-frequency module, logical
It crosses antenna and is sent to long-range monitoring side 11, specifically, data will finally be counted by the network transmission of multi-hop to coordinator, coordinator
According to being transmitted to long-range monitoring side 11.
System is monitored at runtime in the elevator operation provided by the invention based on Internet of Things, and staff passes through aobvious
Show that device 10 and long-range monitoring side 11 are known in real time in elevator speed, moisture signal, infrared signal and lift car
Image information, with pair elevator operation understood in real time, site environment can be understood in time in the event of a failure, with improve
Scene carries out handling/troubleshooting efficiency.
It should be noted last that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting.Although ginseng
It is described the invention in detail according to embodiment, those skilled in the art should understand that, to technical side of the invention
Case is modified or replaced equivalently, and without departure from the spirit and scope of technical solution of the present invention, should all be covered in the present invention
Scope of the claims in.
Claims (10)
1. a kind of elevator operation based on Internet of Things monitors system, which is characterized in that the elevator fortune based on Internet of Things
Row condition monitoring system includes central processing unit (1), humidity sensor (2), signal processing circuit (3), rotary encoder
(4), infrared sensor (5), image capture module (6), image processing module (7), comparison module (8), alarm (9), display
Device (10), long-range monitoring side (11) and power module (12)；
Wherein, the output end of the humidity sensor (2) is connect with the input terminal of the signal processing circuit (3), the signal
The output end of processing circuit (3) is connect with the input terminal of the central processing unit (1), the output of the rotary encoder (4)
End is connect with the input terminal of the central processing unit (1), and the output end of the infrared sensor (5) and the central processing fill
The input terminal connection of (1) is set, the output end of described image acquisition module (6) and the input terminal of described image processing module (7) connect
It connects, the output end of described image processing module (7) is connect with the input terminal of the central processing unit (1), the display
(10) input terminal is connect with the output end of the central processing unit (1), the input terminal of the comparison module (8) and it is described in
The output end connection of processing unit (1) is entreated, the output end of the comparison module (8) is connect with the input terminal of the alarm (9),
The central processing unit (1) connect with long-range monitoring side (11) wireless telecommunications；
The humidity sensor (2) is set to lift car top, for the moisture signal at the top of detecting elevator, passes through shaft coupling
The rotary encoder (4) are arranged on machine shaft, to detect elevator speed, the infrared sensor (5) is set
It is placed in lift car, the infrared sensor (5) is used to detect the infrared ray of human body sending, described image acquisition module (6)
It is set in lift car, for acquiring the image information in lift car, the power module (12) is described based on Internet of Things
The elevator operation monitoring system of net provides electric power support.
2. the elevator operation according to claim 1 based on Internet of Things monitors system, which is characterized in that pass through shaft coupling
Device the rotary encoder (4) is arranged on machine shaft, to detect elevator speed, the central processing unit
(1) elevator speed is transmitted to the comparison module (8), the elevator speed that the comparison module (8) will receive
It is compared with the pre-set velocity threshold value being stored in the comparison module (8), if the elevator that the comparison module (8) receives
The speed of service is greater than the pre-set velocity threshold value being stored in the comparison module (8), then the comparison module (8) controls the report
Alert device (9) send warning message；The humidity sensor (2) is set to lift car top, for wet at the top of detecting elevator
Signal is spent, and moisture signal is transmitted to the signal processing circuit (3), the signal processing circuit (3) is wet to what is received
Degree signal successively carries out signal amplification and signal filtering processing, and signal is transmitted to the central processing unit by treated
(1)；The infrared sensor (5) is set in lift car, and the infrared sensor (5) is used to detect the infrared of human body sending
Line, and will test signal and be transmitted to the central processing unit (1), described image acquisition module (6) is set in lift car,
Described image processing module (7), institute are transmitted to for acquiring the image information in lift car, and by acquired image information
It states image processing module (7) and image enhancement, image sharpening, image smoothing and image is successively carried out to the image information received
Noise reduction process, by treated, image information is transmitted to the central processing unit (1) to described image processing module (7), described
The elevator speed received, moisture signal, infrared signal and image information are transmitted to institute by central processing unit (1)
It states display (10) to be shown, the central processing unit (1) is by the elevator speed received, moisture signal, infrared
Line signal and image information pass through antenna transmission to the long-range monitoring side (11).
3. the elevator operation according to claim 1 based on Internet of Things monitors system, which is characterized in that the humidity
Sensor (2) is set to lift car top, and for the moisture signal at the top of detecting elevator, the moisture signal of acquisition is converted to
Voltage signal V0, and voltage signal V0 is transmitted to the signal processing circuit (3), V1 is to pass through the signal processing circuit
(3) treated voltage signal, the signal processing circuit (3) include signal amplification unit and signal filter unit, described wet
Degree sensor (2) output end connect with the input terminal of the signal amplification unit, the output end of the signal amplification unit and
The input terminal of the signal filter unit connects, output end and the central processing unit (1) of the signal filter unit
The connection of ADC port end.
4. the elevator operation according to claim 3 based on Internet of Things monitors system, which is characterized in that the signal
Amplifying unit includes integrated transporting discharging A1-A3, resistance R1-R14, capacitor C1-C5 and triode T1-T4；
Wherein, the output end of the humidity sensor (2) is connect with the base stage of triode T1, one end ground connection of capacitor C1, capacitor
The other end of C1 is connect with one end of resistance R1, and the output end of the humidity sensor (2) is also connect with the other end of resistance R1,
One end of resistance R2 is connect with one end of capacitor C2, and the other end of resistance R2 is connect with one end of resistance R1, and capacitor C2's is another
End is connect with the output end of integrated transporting discharging A2, and one end of resistance R2 is also connect with the inverting input terminal of integrated transporting discharging A2, capacitor C2
The other end also connect with one end of resistance R3, the other end of resistance R3 is connect with the base stage of triode T2, one end of capacitor C3
Ground connection, the other end of capacitor C3 are connect with the base stage of triode T2, and one end of resistance R4 is connect with -15V power supply, and resistance R4's is another
One end is connect with the emitter of triode T2, and one end of resistance R5 is connect with the collector of triode T1, the other end of resistance R5
It is connect with the emitter of triode T1, the emitter of triode T1 is connect with+15V power supply, the collector of triode T1 and integrated
The non-inverting input terminal of amplifier A1 connects, the reverse inter-input-ing ending grounding of integrated transporting discharging A1, the collector and integrated transporting discharging of triode T2
The non-inverting input terminal of A1 connects, and one end of resistance R6 is connect with one end of resistance R4, and the other end of resistance R6 is with triode T2's
Collector connection, one end of resistance R7 are connect with one end of resistance R4, and the other end of resistance R7 and the emitter of triode T4 connect
It connecing, one end of resistance R8 is connect with the emitter of triode T3, and the other end of resistance R8 is connect with the emitter of triode T1, and three
The base stage of pole pipe T3 is connect with one end of resistance R5, and the base stage of triode T4 is connect with the other end of resistance R6, integrated transporting discharging A1
Output end connect with one end of resistance R9, the other end of resistance R9 is connect with the output end of integrated transporting discharging A3, the one of capacitor C4
End ground connection, the other end of capacitor C4 are connect with one end of resistance R10, and one end of resistance R10 is connect with the collector of triode T4,
The other end of resistance R10 is connect with the non-inverting input terminal of integrated transporting discharging A3, the reverse inter-input-ing ending grounding of integrated transporting discharging A3, capacitor C5
One end ground connection, the other end of capacitor C5 connect with the non-inverting input terminal of integrated transporting discharging A2, one end of resistance R11 and integrated transporting discharging
The non-inverting input terminal of A2 connects, and one end ground connection of resistance R12, the other end of resistance R11 is connect with the other end of resistance R12, electricity
The other end of resistance R12 is connect with one end of resistance R13, and the other end of resistance R13 is connect with the output end of integrated transporting discharging A3, resistance
One end of R14 is connect with the output end of integrated transporting discharging A3, and the input terminal of the other end of resistance R14 and the signal filter unit connects
It connects.
5. the elevator operation according to claim 4 based on Internet of Things monitors system, which is characterized in that the signal
Filter unit includes resistance R15-R21, capacitor C6-C7 and integrated transporting discharging A4-A6；
Wherein, the output end of the signal amplification unit is connect with one end of resistance R15, the other end and resistance R17 of resistance R15
One end it is in parallel after connect with the non-inverting input terminal of integrated transporting discharging A4, the other end of resistance R17 and the output end of integrated transporting discharging A4
Connection, one end ground connection of resistance R16, the non-inverting input terminal after the other end of resistance R16 is in parallel with resistance R21 with integrated transporting discharging A4
Connection, the other end of resistance R21 connect with the output end of integrated transporting discharging A4, and the other end of resistance R17 is defeated with integrated transporting discharging A4's
Connect after outlet is in parallel with one end of resistance R18, after the other end of resistance R18 is in parallel with one end of capacitor C6 with integrated transporting discharging A5
Inverting input terminal connection, the other end of capacitor C6 connect with after the parallel connection of the output end of integrated transporting discharging A5 with one end of resistance R19,
The non-inverting input terminal of integrated transporting discharging A5 is grounded, with integrated transporting discharging A6's after the other end of resistance R19 is in parallel with one end of capacitor C7
Inverting input terminal connection, the non-inverting input terminal ground connection of integrated transporting discharging A6, the other end of capacitor C7 and the output end of integrated transporting discharging A6
Connection, one end of resistance R20 are connect with the inverting input terminal of integrated transporting discharging A4, and the other end of resistance R20 is with integrated transporting discharging A6's
Output end connection, one end of resistance R21 are connect with the non-inverting input terminal of integrated transporting discharging A4, the other end of resistance R21 and integrated fortune
The output end connection of A5 is put, the output end of integrated transporting discharging A6 is connect with the port ADC of the central processing unit (1), the letter
Number processing unit will treated voltage signal V1 the is transmitted to central processing unit (1) the port ADC.
6. the elevator operation according to claim 1 based on Internet of Things monitors system, which is characterized in that described image
Processing module (7) includes image enhancing unit, image sharpening unit, image smoothing unit and image noise reduction unit；
Wherein, described image acquisition module (6) is used to acquire the image information in lift car, described image acquisition module (6)
Output end connect with the input terminal of described image enhancement unit, the output end of described image enhancement unit and described image sharpen
The input terminal of unit connects, and the output end that described image sharpens unit is connect with the input terminal of described image smooth unit, described
The output end of image smoothing unit is connect with the input terminal of described image noise reduction unit, the output end of described image noise reduction unit with
The input terminal of the central processing unit (1) connects.
7. the elevator operation according to claim 6 based on Internet of Things monitors system, which is characterized in that by the figure
The image definition that picture acquisition module (6) is transmitted to described image processing module (7) is two-dimensional function f (x, y), and wherein x, y are empty
Between coordinate, described image enhancement unit to image f (x, y) carry out image definition enhancing processing, after image enhancement processing
Two-dimensional image function be g (x, y), wherein
。
8. the elevator operation according to claim 7 based on Internet of Things monitors system, which is characterized in that described image
Sharpen unit and image sharpening processing carried out to image g (x, y), by image sharpening treated two-dimensional image function be h (x,
Y), wherein
。
9. the elevator operation according to claim 8 based on Internet of Things monitors system, which is characterized in that described image
Smooth unit carries out picture smooth treatment to image h (x, y), two-dimensional image function after picture smooth treatment be d (x,
Y), smooth function is q (x, y), wherein
；
；
Wherein , ﹡ is convolution symbol,For customized adjustable constant, smooth effect is to pass throughCome what is controlled.
10. the elevator operation according to claim 9 based on Internet of Things monitors system, which is characterized in that the figure
As noise reduction unit carries out image noise reduction processing to image d (x, y), by image noise reduction treated two-dimensional image function be s (x,
Y),
；
Described image s (x, y) is transmitted to the central processing unit (1) by described image noise reduction unit.
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| CN113548562A (en) * | 2021-07-08 | 2021-10-26 | 浙江城际特种设备检测有限公司 | Elevator detection method, system, storage medium and elevator |
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Application publication date: 20190405 |