CN109029723A - Illuminance sensor and illuminance measurement system - Google Patents
Illuminance sensor and illuminance measurement system Download PDFInfo
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- CN109029723A CN109029723A CN201810863315.7A CN201810863315A CN109029723A CN 109029723 A CN109029723 A CN 109029723A CN 201810863315 A CN201810863315 A CN 201810863315A CN 109029723 A CN109029723 A CN 109029723A
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- illuminance sensor
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- 238000005259 measurement Methods 0.000 title claims abstract description 17
- 238000004891 communication Methods 0.000 claims description 12
- 238000005286 illumination Methods 0.000 claims description 5
- 230000000087 stabilizing effect Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 8
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000035945 sensitivity Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000003595 spectral effect Effects 0.000 description 2
- 241001465382 Physalis alkekengi Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
- G01J1/44—Electric circuits
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
The invention discloses a kind of illuminance sensors, it includes STM32 module, power module, J-link download module, UART turns of 485 modules, illuminance acquisition module, the power module is respectively STM32 module, J-link download module, UART turns 485 modules, illuminance acquisition module is powered, the STM32 module turns 485 modules with J-link download module, UART respectively, illuminance acquisition module is connect, and STM32 module is communicated by Modbus agreement with host computer.Invention additionally discloses a kind of illuminance measurement systems.The present invention can be communicated with external host computer in real time, to control in time the illuminance in tunnel, improve the traffic safety in tunnel and save electric energy.
Description
Technical field
The present invention relates to illuminance measurement fields, and in particular to a kind of illuminance sensor and illuminance measurement system.
Background technique
According to national regulation, each section of brightness needs monitored in tunnel, and traditional illuminance sensor can be completed to supervise
The function of survey, but without communication function, we can not obtain each section in tunnel of Lighting information in real time, can not implement real-time control.
Summary of the invention
The purpose of the present invention is to provide a kind of illuminance sensor and illuminance measurement system, the illuminance sensor energy
It is communicated in real time with external host computer, to control in time the illuminance in tunnel, the traffic safety in tunnel can be improved
And electric energy is saved.
The technical scheme adopted by the invention is that:
A kind of illuminance sensor comprising STM32 module, power module, J-link download module, UART turn 485 moulds
Block, illuminance acquisition module, the power module are respectively STM32 module, J-link download module, UART turns of 485 modules, light
The power supply of illumination acquisition module, the STM32 module turns 485 modules with J-link download module, UART respectively, illuminance acquires mould
Block connection, STM32 module are communicated by Modbus agreement with host computer.
According to the above scheme, the power module provides 3.3V voltage for STM32 module, provides to illuminance acquisition module
3.3V voltage provides 3.3V voltage to J-link download module, turns 485 modules to UART and provides 3.3V and 5V voltage.
According to the above scheme, the power module includes that 12V turns 5V circuit, 5V turns 3.3V circuit, and 12V turns the circuit selection of 5V
Low-power consumption voltage stabilizing chip LM2596S-5V, 5V turn the circuit selection AMS1117-3.3 chip of 3.3V.
According to the above scheme, the illuminance acquisition module uses BH1750FVI chip；UART turns 485 modules and uses
ADM2483 chip.
Illuminance sensor has the function of function of initializing, modification communication baud rate and modification slave addresses function.
The present invention also provides a kind of illuminance measurement systems comprising above-mentioned illuminance sensor, the illuminance sensing
The tunnel illuminance data of acquisition are transmitted to the embedded-type ARM plate being laid in tunnel, embedded-type ARM by Modbus agreement by device
Plate passes data to remote server by wireless router, 3G or 4G phonecard, and remote server passes data to number
It is shown according to display platform.
According to the above scheme, the illuminance measurement system further includes ARM plate, and ARM plate receives the electric energy that intelligent electric meter transmits
Data, embedded-type ARM plate receive the car flow information data that transmit of vehicle checker, ARM plate, embedded-type ARM plate by wireless router,
Above-mentioned data are passed to remote server by 3G or 4G phonecard, and remote server passes data to data display platform progress
It shows, remote server controls the lighting system in tunnel according to illuminance data, energy data, car flow information data
System.
According to the above scheme, illuminance sensor is as Modbus slave, the instruction of real time polling embedded-type ARM plate；For embedding
The instruction for entering the transmission of formula ARM plate, does corresponding judgement, and based on the judgement done, make corresponding reply.
According to the above scheme, polling procedure realization in a while (1), illuminance sensor and embedded-type ARM plate (on
Position machine) communication interface be RS485, communication protocol is Modbus agreement.It is sent when illuminance sensor is polled to by host
After instruction, further judgement can be done.
According to the above scheme, corresponding judgement, decision instruction are done in the instruction that illumination detection device can be sent for embedded-type ARM plate
Whether message is effective；Specifically: the address for first determining whether the destination address of this section of message whether thus illuminance sensor, if report
The address of represented expectation this non-sensor of communication slave address in text, then dropping packets carry out CRC if address is consistent
Verification, if CRC is correct, judges its function code；For different function, illuminance sensor will do different replies.
According to the above scheme, illuminance sensor is requested after having judged address, CRC and function code based on embedded-type ARM plate
Corresponding function, illuminance sensor can give information-reply to embedded-type ARM plate；When function code is " 04 ", illuminance sensing
Illuminance, temperature, humidity information are replied to embedded-type ARM plate by device；When function code is " 06 ", illuminance sensor will be according to
Itself address Modbus is modified according to message content or is modified itself operating rate or is carried out initial work.
Illuminance sensor is deployed in tunnel face and tunnel, by RS485 bus communication, is based on Modbus protocol realization
Then the differentiation of different address realizes that more sensors are communicated with host computer.For this illuminance sensor as slave, host computer is (embedding
Enter formula ARM plate) as host.Host computer connects multiple sensors by RS485 interface, and sensor is constantly in reception pattern,
Host is waited to request in a manner of poll.
The beneficial effects of the present invention are:
Illuminance sensor can have by Modbus agreement and embedded-type ARM plate real time communication, high resolution close to view
Feel the spectral sensitivity characteristic of sensitivity, and light source dependence is weaker；
The MCU of illuminance sensor is STM32, is communicated using various protocols with sensor, such as monobus, SPI, I2C etc.；
Moreover, dual-sided board is used in circuit design, simplifies design, reduces sensor volume；Finally, transplanting is a newest
Protocol stack --- FreeModbus protocol stack, for realizing the Modbus function of sensor；
Illuminance sensor realizes the reality to photometric data inside and outside tunnel as Modbus slave, by embedded-type ARM plate
When acquire, and using technology of Internet of things by data upload in cloud, to analyze the optimal brightness in tunnel, instruct tunnel
The switch of interior lamps and lanterns, to realize tunnel safety driving and energy conservation；
Illuminance sensor can be applied to each place and weather condition, no matter indoor and outdoor；
The present invention is based on the intelligent measure that Modbus agreement and RS485 interface realize illuminance, illuminance, the temperature of acquisition
The accuracy rate of humidity reaches 96%.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples, in attached drawing:
Fig. 1 is that 12V turns 5V circuit；
Fig. 2 is that 5V turns 3.3V circuit；
Fig. 3 is the circuit diagram of illuminance acquisition module；
Fig. 4 is the circuit diagram of STM32 module (main MCU module)；
Fig. 5 is the circuit diagram of J-link download module；
Fig. 6 is the circuit diagram that UART turns 485 modules；
Fig. 7 is the structural schematic diagram of illuminance sensor；
Fig. 8 is the structural schematic diagram of illuminance measurement system；
Wherein: 1, STM32 module, 2, power module, 3, J-link download module, 4, UART turns of 485 modules, 5, illuminance
Acquisition module, 6, embedded-type ARM plate, 7, intelligent electric meter, 8, vehicle checker, 9, remote server, 10, data display platform, 11, tunnel
Road, 12, illuminance sensor, 13, ARM plate.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not
For limiting the present invention.
Referring to a kind of illuminance sensor of Fig. 7 comprising STM32 module 1, power module 2, J-link download module 3,
UART turns 485 modules 4, illuminance acquisition module 5.Power module 2 is that STM32 module 1 provides 3.3V voltage, is acquired to illuminance
Module 5 provides 3.3V voltage, provides 3.3V voltage to J-link download module 3, turns 485 modules 4 to UART and provides 3.3V and 5V
Voltage.STM32 module 1 turns 485 modules 4 with J-link download module 3, UART respectively, illuminance acquisition module 5 is connect, STM32
Module 1 is communicated by Modbus agreement with host computer (embedded-type ARM plate 6).STM32 module 1 gets illuminance acquisition module 5
Collected illuminance data, and 485 modules 4 are turned by UART, photometric data is sent to embedded-type ARM plate 6, under J-link
Carrying module 3 is that cooperation STM32 module 1 carries out program downloading and facilitates debugging.
Power module includes that 12V turns 5V circuit, 5V turns 3.3V circuit.12V turns 5V circuit as shown in Figure 1, to promote sensing
Device quality, 12V turn 5V circuit selection low-power consumption voltage stabilizing chip LM2596S-5V and realize；The input of LM2596S maximum is 40V, line
Property degree and load regulation characteristic it is good, LM2596S-5V indicate its fix output be 5V；Chip interior is integrated with fixed frequency hair
Raw device and frequency compensator, the output electric current of standby mode is only 80uA；Power conversion efficiency when chip output 5V is reachable
80%.5V turns 3.3V circuit as shown in Fig. 2, 5V, which turns 3.3V circuit selection AMS1117-3.3 chip, realizes that the inside AMS1117 collects
It is a positive low dropout voltage regulator at overheating protection and current-limiting circuit；AMS1117-3.3 fixes output voltage 3.3V, essence
Degree reaches 1%.
The circuit diagram of illuminance acquisition module is as shown in figure 3, select BH1750FVI as the master control of illuminance acquisition module
Chip, BH1750FVI support I2C bus interface, easy to use, the digital quantity of direct output illuminance.BH1750FVI resolution ratio
Height has the spectral sensitivity characteristic close to visual sensitivity, and precision is up to 0.5lx, and light source dependence is weaker.
The circuit diagram of STM32 module (main MCU module) is as shown in figure 4, select the single-chip microcontroller of model STM32F103C8T6
For illuminance sensor core main control MCU, the STM32 of the model has 48 feet, belongs to the enhanced CPU of intermediate size, is to be based on
32 Cortex-M3 kernel CPU, the maximum operating frequency 72MHz of ARM embed the RC oscillator of 8MHz, carry 128k's
Flash, 2 12 ADC, 7 timers, 2 I2C interface, 3 USART interfaces, 2 SPI interfaces and DMA function.STM32
It is communicated using various protocols with senser element, transplants FreeModbus protocol stack, for realizing the Modbus function of sensor, fortune
Data are uploaded for sensing the illuminance of various occasions, and using technology of Internet of things.STM32 is through I2C bus and BH1750
Communication obtains Real-Time Optical illumination, and STM32 is communicated by RS485 interface and Modbus agreement with host computer (embedded-type ARM plate 6),
It can be immediately by the request of the Lighting information response host computer (embedded-type ARM plate 6) of sensor；Finally, due to which multiple be based on STM32
Illuminance sensor with Modbus agreement as Modbus slave, distinguish by different addresses, therefore needs by different slaves
The information such as address and the baud rate of sensor are stored in the Flash of STM32.Debug J-link download circuit such as Fig. 5 of STM32
It is shown.
UART turns the circuit of 485 modules as shown in fig. 6, turning the chip of 485 modules using ADM2483 chip as UART.
ADM2483 is a 485 chip of isolated form, and maximum transmission rate allows up to 256 up to 500Kbps, number of nodes.
Referring to Fig. 8, a kind of illuminance measurement system, including embedded-type ARM plate 6, ARM plate 13 and be installed in inside and outside tunnel 11
Above-mentioned illuminance sensor 12, illuminance sensor 12 have the different addresses Modbus；Illuminance sensor 12 passes through
The tunnel illuminance data of acquisition are transmitted to (the illuminance sensor of embedded-type ARM plate 6 being laid in tunnel 11 by Modbus agreement
12 are connect by RS485 bus with the RS485 interface of embedded-type ARM plate 6), embedded-type ARM plate 6 also receives what vehicle checker 8 transmitted
Car flow information data, ARM plate 13 receive the energy data that intelligent electric meter 7 transmits, and embedded-type ARM plate 6, ARM plate 13 pass through wireless
Above-mentioned data are passed to remote server 9 by router, 3G or 4G phonecard, and remote server 9 passes data to data exhibition
Show that platform 10 is shown；Remote server 9 is calculated according to illuminance data, energy data, car flow information data through fuzzy control
Method will control conclusion feedback into tunnel illuminating system, control each section in tunnel of illuminance.
The illuminance measurement system further includes ARM plate, ARM plate
In the present invention, embedded-type ARM plate 6 is based on the timing of illuminance acquisition protocols and sends instruction to sensor, can be to tunnel
Illuminance inside and outside road is acquired.Illuminance that 6 acquisition and storage illuminance sensor of embedded-type ARM plate measures, intelligence electricity
The car flow information that table 7 and vehicle checker 8 detect is reported to data information remotely by wireless router plus 3G or 4G phonecard
Server 1.The data such as illumination, wagon flow, electricity consumption on server are showed in webpage by the application web technologies of data display platform 10
Or mobile phone terminal can more intuitive observation changing rule and control effect by curve, histogram etc..
This illuminance sensor has the function of function of initializing, modification communication baud rate and modification slave addresses function.
Illuminance sensor 12 is used as Modbus slave, and real time polling embedded-type ARM plate 6 instructs；For embedded-type ARM plate
6 instructions sent, do corresponding judgement, and based on the judgement done, make corresponding reply.Polling procedure is in a while
(1) it is realized in.
Corresponding judgement is done in the instruction that illuminance sensor 12 can be sent for embedded-type ARM plate 6, and decision instruction message is
It is no effective；Specifically: the address for first determining whether the destination address of this section of message whether thus illuminance sensor 12, if in message
The address of represented expectation this non-sensor of communication slave address, then dropping packets verify CRC if address is consistent,
If CRC is correct, its function code is judged；For different function, illuminance sensor will do different replies.
Illuminance sensor after having judged address, CRC and function code, based on embedded-type ARM plate request corresponding function,
Illuminance sensor can give information-reply to embedded-type ARM plate；When function code be " 04 " when, illuminance sensor by illuminance,
Temperature, humidity information reply to embedded-type ARM plate；When function code is " 06 ", illuminance sensor will be according to message content
It modifies itself address Modbus or modifies itself operating rate or carry out initial work.
It should be understood that for those of ordinary skills, it can be modified or changed according to the above description,
And all these modifications and variations should all belong to the protection domain of appended claims of the present invention.
Claims (9)
1. a kind of illuminance sensor, it is characterised in that: including STM32 module, power module, J-link download module, UART
Turn 485 modules, illuminance acquisition module, the power module is respectively STM32 module, J-link download module, UART turns 485
Module, the power supply of illuminance acquisition module, the STM32 module turn 485 modules, illumination with J-link download module, UART respectively
Acquisition module connection is spent, STM32 module passes through Modbus agreement and embedded-type ARM board communications.
2. illuminance sensor according to claim 1, it is characterised in that: the power module provides for STM32 module
3.3V voltage, provides 3.3V voltage to illuminance acquisition module, provides 3.3V voltage to J-link download module, turns to UART
485 modules provide 3.3V and 5V voltage.
3. illuminance sensor according to claim 2, it is characterised in that: the power module include 12V turn 5V circuit,
5V turns 3.3V circuit, and circuit selection the low-power consumption voltage stabilizing chip LM2596S-5V, 5V that 12V turns 5V turn the circuit selection of 3.3V
AMS1117-3.3 chip.
4. illuminance sensor according to claim 1, it is characterised in that: the illuminance acquisition module uses
BH1750FVI chip；UART turns 485 modules and uses ADM2483 chip.
5. a kind of illuminance measurement system, it is characterised in that: including the illuminance sensor any in claim 1-4,
The illuminance sensor tunnel illuminance data of acquisition are transmitted to by Modbus agreement be laid in it is embedded in tunnel
ARM plate, embedded-type ARM plate pass data to remote server, remote server by wireless router, 3G or 4G phonecard
Data display platform is passed data to be shown.
6. illuminance measurement system according to claim 5, it is characterised in that: the illuminance measurement system further includes
ARM plate, ARM plate receive the energy data that intelligent electric meter transmits, and embedded-type ARM plate receives the car flow information number that vehicle checker transmits
According to above-mentioned data are passed to remote server by wireless router, 3G or 4G phonecard by ARM plate, embedded-type ARM plate, far
Journey server passes data to data display platform and is shown, and remote server is according to illuminance data, energy data, vehicle
Stream information data control the lighting system in tunnel.
7. illuminance measurement system according to claim 5, it is characterised in that: illuminance sensor as Modbus from
Machine, the instruction of real time polling embedded-type ARM plate；For the instruction that embedded-type ARM plate is sent, corresponding judgement is done, and is based on being done
Judgement, make corresponding reply.
8. illuminance measurement system according to claim 7, it is characterised in that: illuminance sensor can be directed to embedded
Corresponding judgement is done in the instruction that ARM plate is sent, and whether decision instruction message is effective；Specifically: first determine whether the mesh of this section of message
Address whether thus illuminance sensor address, if expectation this non-sensor of communication slave address represented in message
Address, then dropping packets verify CRC if address is consistent, if CRC is correct, judge its function code；For
Different function, illuminance sensor will do different replies.
9. illuminance measurement system according to claim 8, it is characterised in that: illuminance sensor judged address,
After CRC and function code, based on the corresponding function of embedded-type ARM plate request, illuminance sensor can be by information-reply to embedded
ARM plate；When function code is " 04 ", illuminance, temperature, humidity information are replied to embedded-type ARM plate by illuminance sensor；When
When function code is " 06 ", illuminance sensor will modify itself address Modbus according to message content or modify itself work speed
Rate carries out initial work.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810863315.7A CN109029723A (en) | 2018-08-01 | 2018-08-01 | Illuminance sensor and illuminance measurement system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810863315.7A CN109029723A (en) | 2018-08-01 | 2018-08-01 | Illuminance sensor and illuminance measurement system |
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2018
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| US20130046412A1 (en) * | 2009-03-17 | 2013-02-21 | Jetlun Corporation | Method and system for intelligent energy network management control system |
| CN102157057A (en) * | 2011-05-09 | 2011-08-17 | 上海大学 | Wi-Fi (Wireless Fidelity)-based wireless meter reading device |
| CN102736605A (en) * | 2012-06-30 | 2012-10-17 | 李钢 | Modbus communication concentrator |
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