CN208334969U - A kind of distributed data acquisition device for smart city - Google Patents
A kind of distributed data acquisition device for smart city Download PDFInfo
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- CN208334969U CN208334969U CN201821004213.1U CN201821004213U CN208334969U CN 208334969 U CN208334969 U CN 208334969U CN 201821004213 U CN201821004213 U CN 201821004213U CN 208334969 U CN208334969 U CN 208334969U
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Abstract
The utility model relates to a kind of distributed data acquisition devices for smart city.The utility model includes power supply/information separation module for will separate power supply and information, power supply for isolating power supply/information separation module is converted into the DC voltage conversion module of the power supply of other modules, for realizing the master controller for carrying out ethernet communication between interchanger, for storing the memory module of the sampled data of sampling module acquisition and the configurator data of master controller, sampling module for being sampled simultaneously to multiple sensor signals, with provide system clock for master controller and provided for sampling module changeable frequency sampling clock clock module.The utility model is a kind of device end for meeting POE standard, need to only use an ethernet netting twine can be to provide DC power supply and data transmission path for the present apparatus, and installation is simple, and networking is convenient, at low cost, it can be achieved that long-range control.
Description
Technical field
The utility model relates to data acquisition technology field, specifically a kind of distributed data for smart city
Acquisition device.
Background technique
Smart city senses with information and communication technology (ICT) means, analyzes, integrating the items of city operations core system
Key message needs big quantity sensor perception original signal.Data acquisition device be sensor perceptual signal is carried out sampling and
Processing, and sampling data transmitting gives interchanger or control centre by treated.Therefore data acquisition device needs to have peace
Fill the features such as simple, general, expansible.
The current data acquisition device majority for smart city carries out networking using standard ethernet, therefore is installing
In addition to needing to be laid with cable when equipment, it is also necessary to provide working power for device, it is therefore necessary to power supply is routed to installation site,
This undoubtedly increases installation cost and difficulty.Data acquisition device generally can simultaneously adopt the perceptual signal of multiple sensors
Sample, the master controller of available data acquisition device can not simultaneously carry out more sensor signals since interface quantity is limited
Sampling, can not also store lasting a large amount of sampled data, can only interval sampling.When existing technical disadvantages are installations
It needs for the separately installed power supply of equipment, installation cost is high, and networking is not flexible；Universal and scalability is low, and local data are deposited
Reserves ability is small.
Utility model content
Aiming at the defects existing in the prior art, the technical problem to be solved by the present invention is to provide one kind
Distributed data acquisition device for smart city.
The utility model technical solution used for the above purpose is: a kind of distributed number for smart city
According to acquisition device, comprising: for by power supply and information separation power supply/information separation module, be used for power supply/information splitting die
The power supply that block is isolated is converted into the DC voltage conversion module of the power supply of other modules, for realizing between interchanger
Carry out the configurator number of the master controller of ethernet communication, the sampled data for storing sampling module acquisition and master controller
According to memory module, the sampling module for being sampled simultaneously to multiple sensor signals and for master controller provide system
Clock and provided for sampling module changeable frequency sampling clock clock module；The power supply/information separation module is for connecting
Connect POE Ethernet switch；The DC voltage conversion module connection master controller, power supply/information separation module, data storage
Module, clock module and sampling module；The master controller connects power supply/information separation module, data memory module, clock mould
Block and sampling module；The clock module connects sampling module；The sampling module is for connecting multiple sensors.
The master controller uses FPGA.
The power supply/information separation module includes: RJ45 connector, for will be by power supply and information separated network transformation
Device, PD interface controller and ethernet controller, the RJ45 connector is for connecting POE Ethernet switch, the RJ45
Connector connects network transformer, the network transformer connection PD interface controller and ethernet controller, the PD interface
Controller is for connecting DC voltage conversion module, and the ethernet controller is for connecting master controller.
The DC voltage conversion module include: for by the voltage stabilizing chip of 5V input voltage pressure stabilizing to 5V output voltage,
For 5V input voltage to be depressured to the first direct current transformation chip of 3.3V output voltage, is used to for 5V input voltage being depressured to
Second direct current transformation chip of 1.8V output voltage and third direct current for 5V input voltage to be depressured to 1.0V output voltage
Transformation chip.
The sampling module includes: N channel high-precision adc and multiple signal conditioning circuits, each signal condition electricity
For being correspondingly connected with a sensor, all signal conditioning circuits are all connected with N channel high-precision adc on road.
The data memory module includes for the DDR3 memory of the sampled data of store sampled module acquisition and for depositing
Store up the Flash flash memory of the configurator data of master controller.
The utility model have the following advantages that and the utility model has the advantages that
1, the utility model is a kind of device end for meeting POE standard, need to only use an ethernet netting twine
DC power supply and data transmission path are provided for the present apparatus, installation is simple, and networking is convenient, at low cost, it can be achieved that long-range control.
2, the utility model also has very strong Universal and scalability, can perceptual signal to multiple sensors into
Row continuous sampling simultaneously stores sampled data.
Detailed description of the invention
Fig. 1 is the overall mechanism schematic diagram of the utility model；
Fig. 2 is power supply/information separation module structure chart of the utility model；
Fig. 3 is the structure chart of the DC voltage conversion module of the utility model；
Fig. 4 is the structure chart of the sampling module of the utility model；
Fig. 5 is the structure chart of the data memory module of the utility model.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and embodiments.
As shown in Figure 1, a kind of distributed data acquisition device for smart city is by power supply/information separation module 1, straight
Voltage transformation module 2, master controller 3, data memory module 4, sampling module 5, clock module 6 are flowed, totally 6 module compositions.?
In electrical connection, power supply/information separation module 1 is connected with DC voltage conversion module 2 and master controller 3 respectively；DC voltage
Conversion module 2 is connected with other 5 circuit modules in the present invention；Other 5 circuit moulds in master controller 3 and the present invention
Block is connected；Data memory module 4 is connected with DC voltage conversion module 2 and master controller 3 respectively；Sampling module 5 respectively with
DC voltage conversion module 2, master controller 3, clock module 6 are connected；Clock module 6 respectively with master controller 3, sampling module 5
It is connected.
The effect of power supply/information separation module 1 be receive the DC power supply that transmits and information in POE ethernet netting twine, and
Power supply and information are separated, give DC voltage conversion module 2 and master controller 3 respectively.
The effect of DC voltage conversion module 2 is that the DC power supply for separating power supply/information separation module 1 is converted into
The power supply of a variety of lower voltage values uses for the related circuit module in the present invention.
Master controller 3 uses online programmable gate array (FPGA), and effect is data processing, logic control etc., simultaneously
Realize the ethernet communication between the present invention and interchanger.
The effect of data memory module 4 is the configurator for storing sampled data and master controller FPGA.
Sampling module 5 is realized while being sampled to multiple sensor signals, and is transferred at master controller 3
Reason.
The effect of clock module 6 is to provide system clock for master controller, provide the sampling of changeable frequency for sampling module
Clock.
Principle explanation: being that power supply/reception POE Ethernet switch of information separation module 1 is sended over by cable first
DC power supply and information, DC voltage conversion module 2 and master controller 3 are given after power supply and information are separated respectively.Directly
Obtained DC power supply is converted into the power supply of a variety of lower voltage values for other electricity in the present invention by stream voltage transformation module 2
Road module uses.Master controller 3 receives the command information that Ethernet switch sends over, and configurable clock generator module 6 is raw accordingly
At the sampling clock of corresponding frequencies, and starts sampling module 5 and start simultaneously to adopt the analog signal of each sensor perception
Sample.Sampled data is transferred to master controller 3 by sampling module 5, is handled by master controller 3 sampled data, and will processing
As a result it is stored in data memory module 4.After a period of time, master controller 3 reads the sampled data stored in data memory module 4
It is transferred to interchanger out and by Ethernet.
Action relationships: technical solution of the present invention is realized by following steps:
A1) command information from control room is transferred to electricity of the invention by CAT-5 cable by POE Ethernet switch
Source/information separation module 1, while passing through the DC power supply of the idle Double-strand transmission 48V on cable.
A2) power supply/information separation module 1 receives the DC power supply and command information that POE Ethernet switch sends over,
DC voltage conversion module 2 and master controller 3 are given after power supply and command information are separated respectively.
A3) obtained DC power supply is converted into the power supply of a variety of lower voltage values by DC voltage conversion module 2, for giving
Other module for power supply in the present invention, so that modules work normally.
A4) logical program stored in data memory module 4 downloads in master controller 3, executes master controller FPGA
Corresponding logic judgment.Master controller 3 receives the command information that Ethernet switch sends over, and configurable clock generator module accordingly
6 generate the sampling clock of corresponding frequencies.
A5) sampling clock that clock module 6 generates is applied to sampling module 5, so that sampling module 5 starts simultaneously to each
The analog signal of sensor perception sample and sampled data is transferred to master controller 3.
A6 data memory module 4 is stored in after) master controller 3 handles sampled data, after storing a period of time, master control
Device 3 processed the sampled data stored in data memory module 4 is read out and pass through power supply/information separation module 1 be transferred to
Too network switch.
As shown in Fig. 2, power supply/information separation module 1 is by RJ45 connector, network transformer, PD interface controller (electricity consumption
Device interface controller), ethernet PHY (ethernet physical layer interface controller) composition.POE Ethernet switch sends over
48V DC power supply and command information received by RJ45 connector, and be transferred to network transformer.Network transformer is straight by 48V
Galvanic electricity source and command information are separated, and give 48V transmitting DC to PD interface controller, by command information pass to
Net very much PHY.48V DC voltage is converted into 5V voltage and is transferred to DC voltage conversion module 2 by PD interface controller.Ethernet
Command information is converted into ethernet mac layer information and is sent to master controller 3 by PHY.
As shown in figure 3, DC voltage conversion module 2 is by voltage stabilizing chip, the first direct current transformation chip, the second direct current transformation core
Piece, third direct current transformation chip composition.Voltage stabilizing chip is connected with the input terminal of all transformation chips, is all to receive the control of PD interface
The 5V voltage that device processed transmits；Voltage stabilizing chip exports 5V input voltage pressure stabilizing to 5V；First direct current transformation chip is defeated by 5V
Enter voltage step-down to export to 3.3V；5V input voltage is depressured to 1.8V output by the second direct current transformation chip；Third direct current transformation
5V input voltage is depressured to 1.0V output by chip.
As shown in figure 4, sampling module 5 is made of N channel high-precision adc, multiple signal conditioning circuits.Different sensors sense
The analog signal known can carry out the conversion and power amplification of electrical quantities by different signal conditioning circuits；Amplified simulation sense
Know that signal is sent in ADC difference channel to be sampled；Sampled data is transferred to master controller 3 and handled by ADC.
As shown in figure 5, data memory module 4 is made of DDR3 memory, Flash；Master controller 3 to sampled data at
DDR3 memory is stored in after reason；After storing a period of time, master controller 3 reads the sampled data stored in data memory module 4
Out；The data read out are transferred to Ethernet switch by power supply/information separation module 1 by master controller 3.
The present invention is a kind of terminal device for meeting POE standard, only needs an ethernet netting twine that power supply sum number can be realized
According to transmission；Using high-performance FPGA as primary processor, and it is equipped with for it DDR3 memory of high-capacity and high-speed rate；Using multi-pass
The analog signal that the high-precision adc in road perceives multiple sensors synchronizes sampling.
Claims (6)
1. a kind of distributed data acquisition device for smart city characterized by comprising for dividing power supply and information
From power supply/information separation module, the power supply for isolating power supply/information separation module be converted into the power supplies of other modules
The DC voltage conversion module of power supply, for realizing between interchanger carry out ethernet communication master controller, for storing
The memory module of the configurator data of sampled data and master controller that sampling module obtains is used for simultaneously to multiple sensors
The sampling module and provide system clock for master controller and provide the sampling of changeable frequency for sampling module that signal is sampled
The clock module of clock；The power supply/information separation module is for connecting POE Ethernet switch；The DC voltage conversion
Module connects master controller, power supply/information separation module, data memory module, clock module and sampling module；The main control
Device connects power supply/information separation module, data memory module, clock module and sampling module；The clock module connection sampling
Module；The sampling module is for connecting multiple sensors.
2. a kind of distributed data acquisition device for smart city according to claim 1, which is characterized in that described
Master controller uses FPGA.
3. a kind of distributed data acquisition device for smart city according to claim 1, which is characterized in that described
Power supply/information separation module includes: RJ45 connector, for will be by power supply and information separated network transformer, PD Interface Controller
Device and ethernet controller, the RJ45 connector connect network for connecting POE Ethernet switch, the RJ45 connector
Transformer, the network transformer connection PD interface controller and ethernet controller, the PD interface controller is for connecting
DC voltage conversion module, the ethernet controller is for connecting master controller.
4. a kind of distributed data acquisition device for smart city according to claim 1, which is characterized in that described
DC voltage conversion module include: for by the voltage stabilizing chip of 5V input voltage pressure stabilizing to 5V output voltage, be used to input 5V
Voltage step-down to the first direct current transformation chip of 3.3V output voltage, for 5V input voltage to be depressured to 1.8V output voltage
Second direct current transformation chip and third direct current transformation chip for 5V input voltage to be depressured to 1.0V output voltage.
5. a kind of distributed data acquisition device for smart city according to claim 1, which is characterized in that described
Sampling module includes: N channel high-precision adc and multiple signal conditioning circuits, and each signal conditioning circuit connects for corresponding
A sensor is connect, all signal conditioning circuits are all connected with N channel high-precision adc.
6. a kind of distributed data acquisition device for smart city according to claim 1, which is characterized in that described
Data memory module includes for the DDR3 memory of the sampled data of store sampled module acquisition and for storing master controller
The Flash flash memory of configurator data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821004213.1U CN208334969U (en) | 2018-06-27 | 2018-06-27 | A kind of distributed data acquisition device for smart city |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821004213.1U CN208334969U (en) | 2018-06-27 | 2018-06-27 | A kind of distributed data acquisition device for smart city |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208334969U true CN208334969U (en) | 2019-01-04 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821004213.1U Active CN208334969U (en) | 2018-06-27 | 2018-06-27 | A kind of distributed data acquisition device for smart city |
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| Country | Link |
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| CN (1) | CN208334969U (en) |
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2018
- 2018-06-27 CN CN201821004213.1U patent/CN208334969U/en active Active
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