CN208421056U - A kind of multichannel electric power detection and alarm system based on cabinet - Google Patents
A kind of multichannel electric power detection and alarm system based on cabinet Download PDFInfo
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- CN208421056U CN208421056U CN201820621614.5U CN201820621614U CN208421056U CN 208421056 U CN208421056 U CN 208421056U CN 201820621614 U CN201820621614 U CN 201820621614U CN 208421056 U CN208421056 U CN 208421056U
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- power detection
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Abstract
The utility model discloses a kind of multichannel electric power detection and alarm system based on cabinet, includes monitor terminal and the multiple cabinet terminals connecting with it by wireless network；The cabinet terminal includes cabinet module, USB video equipment, bar code scanner module, controller module, electric power detection module and data transmission module, and the electric power detection module includes electric quantity acquisition module, conditioning circuit, multiple signals switching module, ADE7878 electric energy chip, MCU module, data transmission module and data memory module；The utility model drives bar code scanning module, locker module and video acquisition module by UART and usb bus, realize self-service part cast and pickup, the utility model is made of LPC2132 controller and data memory module, signal condition and acquisition module, multiple signals switching module and communication module simultaneously, and the utility model effectively realizes the various functions of power testing system using LPC2132 control chip.
Description
Technical field
The utility model belongs to field of intelligent control more particularly to a kind of multichannel electric power detection and alarm based on cabinet
System.
Background technique
In recent years, the strong growth momentum of electric business allows Express Logistics to develop rapidly, however as Courier Service " last
Kilometer " sends link with charge free, usually there is the problems such as dispatching disconnects, goods part is overstock during the express delivery busy season, therefore, express delivery is thrown
Case is passed just to be cited into.Intelligent express delivery drop-off box on domestic market is still in developing stage, needs hand when delivering express mail
It is inefficient to deposit part to send short message for dynamic input express delivery information, and information is easy to cause accidentally to fill out, and increases the risk that package is lost.
In addition cabinet distribution is realized by detecting cabinet power information in due course with the expansion of society's electricity consumption capacity
Automation and management automation, there is an urgent need to electric power detection and with high-precision is sent to, multi-functional, intelligent direction develops.Tradition
When equipment deposits into row multichannel electricity parameter monitoring, often use multiple electric quantity monitoring instruments method, distinguish detection major loop and
Branch electrical parameter, system complex are at high cost.Therefore, it is very necessary for developing one kind and can carrying out multichannel power testing system
's.For this purpose, Three-Phase Digital Electric Instrument together by the Integration ofTechnologies such as sampling, DSP, ARM, is realized by using embedded system
Multi tariff, the measurement display of many kinds of parameters, rich interface, the digital electric meter for being easy to extend.It is designed in text based on ADE7878 chip
A kind of numerical control power testing system, can measure 1 road voltage, 4 road electric currents, 4 road power, 1 road electric energy, and detection accuracy is reachable
1%, and the design of hardware and software of system is given, which is applied in the development of Related product.This design simultaneously
Method is also that the exploitation of Related product is laid a good foundation.
Utility model content
Technical problem to be solved in the utility model be for background technique deficiency provide it is a kind of based on cabinet
Multichannel electric power detection and alarm system, by LPC2132 controller and data memory module, signal condition and acquisition module, more
Road signal switching module and communication module composition, the utility model effectively realize electric power detection using LPC2132 control chip
The various functions of system.
The utility model uses following technical scheme to solve above-mentioned technical problem
A kind of multichannel electric power detection and alarm system based on cabinet, passes through wireless network comprising monitor terminal and with it
Multiple cabinet terminals of connection；
The cabinet terminal includes cabinet module, USB video equipment, bar code scanner module, controller module, electricity
Amount detection module and data transmission module, the cabinet module pass through UART serial ports with bar code scanner module respectively and connect control
Device module processed, the USB video equipment connect controller module, electric power detection module and data transmission module by USB interface
It is connect respectively with controller module；
The electric power detection module includes electric quantity acquisition module, conditioning circuit, multiple signals switching module, ADE7878 electricity
It can chip, MCU module, data transmission module and data memory module；The electric quantity acquisition module successively passes through conditioning circuit, more
Road signal switching module, ADE7878 electric energy chip connect MCU module, the data transmission module and data memory module difference
It is connect with MCU module.
As a kind of further preferred scheme of multichannel electric power detection and alarm system based on cabinet of the utility model,
The electric quantity acquisition module includes voltage acquisition module and current acquisition module.
As a kind of further preferred scheme of multichannel electric power detection and alarm system based on cabinet of the utility model,
It is described more
The chip model of road signal switching module is CD4052/CC4052.
As a kind of further preferred scheme of multichannel electric power detection and alarm system based on cabinet of the utility model,
It is described
MCU module controls chip using LPC2132.
As a kind of further preferred scheme of multichannel electric power detection and alarm system based on cabinet of the utility model,
It is described to deposit
Container module includes cabinet cabinet, drive circuit module, detection circuit module and single-chip microcontroller；The cabinet case
Body passes through drive circuit module, detection circuit module connection single-chip microcontroller respectively.
As a kind of further preferred scheme of multichannel electric power detection and alarm system based on cabinet of the utility model,
The drive
Dynamic circuit includes sequentially connected 74LS138 decoder and triode reverse amplification circuit module.
As a kind of further preferred scheme of multichannel electric power detection and alarm system based on cabinet of the utility model,
The prison
Control terminal includes data transmit-receive module, main controller module, display module, memory module, alarm module and GSM
Module, the data transmit-receive module, display module, memory module, alarm module and gsm module are respectively and main controller module
Connection.
As a kind of further preferred scheme of multichannel electric power detection and alarm system based on cabinet of the utility model,
The control
The chip model of device module processed is S3C6410.
As a kind of further preferred scheme of multichannel electric power detection and alarm system based on cabinet of the utility model,
It is described
USB video equipment includes the USB camera for video data acquiring, the processing of the video for video frequency signal processing
Unit, for vision signal output USB video data output interface, for by the data type conversion of vision signal at be suitble to
In the USB controller of the data type of USB video data output interface output；The USB camera, video processing unit, USB
Controller, USB video data output interface are sequentially connected.
The utility model compared with the prior art by using the above technical solution, has following technical effect that
1, the utility model drives bar code scanning module, locker module and video acquisition mould by UART and usb bus
Block, realizes self-service part cast and pickup, at the same the utility model by LPC2132 controller and data memory module, signal condition and
Acquisition module, multiple signals switching module and communication module composition, the utility model are effectively real using LPC2132 control chip
The various functions of existing power testing system；
2, the utility model realizes the collecting work of multichannel electricity data with an ADE7878 electric energy chip, and each
In the specified sample range of electricity data, for precision up to 1%, circuit is simple, flexible in application, precision is high, low in cost；
3, the utility model is completed to carry out overall monitor to entire community's cabinet electricity using wireless network, eventually by monitoring
The long-range monitoring and alarm at end quickly can arrange maintenance personal to safeguard.
Detailed description of the invention
Fig. 1 is the overall system structure schematic diagram of the utility model；
Fig. 2 is the structure principle chart of the utility model cabinet terminal；
Fig. 3 is the structure principle chart of the utility model electric power detection module；
Fig. 4 is the structure principle chart of the utility model cabinet module；
Fig. 5 is the utility model monitor terminal structure principle chart；
Fig. 6 is the structure principle chart of the utility model USB video equipment.
Specific embodiment
The technical solution of the utility model is described in further detail with reference to the accompanying drawing:
A kind of multichannel electric power detection and alarm system based on cabinet, as shown in Figure 1, comprising monitor terminal and and its
The multiple cabinet terminals connected by wireless network；Server terminal can be by Internet network from express company's cloud service
All courier packages' data of the cell are downloaded and saved to device, is communicated using Ethernet with drop-off box terminal, and processing carrys out self terminal
Function request, and by UART serial mode drive gsm module send Chinese short message, that realizes package asks for informing function.
Drop-off box terminal is during courier delivers express mail, first by barcode scanner typing express delivery odd numbers and will be fast
Part is stored in specified number locker, passes through Ethernet later for express delivery information upload server to carry out GSM message notice
It is synchronous with data；During client's pickup, pickup password is verified by terminal input device, utilizes USB camera
Video acquisition coding is carried out to pickup process, and uploads monitor terminal storage.
As shown in Fig. 2, the cabinet terminal includes cabinet module, USB video equipment, bar code scanner module, control
Device module, electric power detection module and data transmission module processed, the cabinet module and bar code scanner module pass through respectively
UART serial ports connects controller module, and the USB video equipment connects controller module, electric power detection module by USB interface
It is connect respectively with controller module with data transmission module；Locker module externally provides UART interface, receives and carrys out self terminal master
The order data of control carries out switch state detection to cabinet door cabinet to open the unit cabinet of specified number.
Case control circuit is designed based on STC89C52 single chip, and wherein driving circuit is by 74LS138 decoder and three poles
Pipe reverse amplification circuit is constituted, and can be changed according to single-chip processor i/o mouth output level and be controlled opening for electromagnetic lock in box unit cabinet
It closes, detection circuit judges the switch shape of cabinet door cabinet by the output level to the tongue tube detector in box unit cabinet
State, and will test result input single-chip processor i/o mouth.
The utility model is believed by LPC2132 controller and data memory module, signal condition and acquisition module, multichannel simultaneously
Number switching module and communication module composition, every function of power testing system is effectively realized using LPC2132 control chip
Energy；
As shown in figure 3, the electric power detection module include electric quantity acquisition module, conditioning circuit, multiple signals switching module,
ADE7878 electric energy chip, MCU module, data transmission module and data memory module；The electric quantity acquisition module is successively through toning
It manages circuit, multiple signals switching module, ADE7878 electric energy chip and connects MCU module, the data transmission module and data storage
Module is connect with MCU module respectively.The utility model is by LPC2132 controller and data memory module, signal condition and acquisition
Module, multiple signals switching module and communication module composition effectively realize power testing system using LPC2132 control chip
Various functions；
ADE7878 is a high-precision, three phase electric energy measurement IC.ADE7878 be suitble to measure various three lines, four lines two or three
Phase configuration is active and reactive and apparent energy, such as Y shape or triangle etc..System calibration function is respectively mutually all had, i.e. virtual value loses
Adjustment just, phase alignment and gain calibration.The output of CF1, CF2 and CF3 logic can provide many power informations: total/fundamental active/
Reactive power, total apparent energy or current effective value and.ADE7878 has waveform sampling register, and it is defeated to allow to access all ADC
Out.The device also provides power quality measurement, such as: low pressure or high pressure detection, short high current variation, line voltage distribution week in short-term
Phase measurement and the angle between phase voltage and electric current etc..It, can be logical with ADE7878 using dual serial interface SPI and I2C
Letter, while specialized high-speed interface, the port high-speed data acquisition (HSDC) can be used cooperatively with I2C, to access ADC output and reality
When power information.The device is used to refer to an enabled interrupt event there are two interrupt requests pin/IRQ0 and/IRQ1
It has occurred and that.
The electric quantity acquisition module includes voltage acquisition module and current acquisition module.
The chip model of the multiple signals switching module is CD4052/CC4052.
The MCU module controls chip using LPC2132.
As shown in figure 4, the cabinet module includes cabinet cabinet, drive circuit module, detection circuit module and list
Piece machine；The cabinet cabinet passes through drive circuit module, detection circuit module connection single-chip microcontroller respectively.
The driving circuit includes sequentially connected 74LS138 decoder and triode reverse amplification circuit module.
As shown in figure 5, the monitor terminal includes data transmit-receive module, main controller module, display module, memory mould
Block,
Alarm module and gsm module, the data transmit-receive module, display module, memory module, alarm module and GSM
Module is connected with main controller module respectively.
The chip model of the controller module is S3C6410.
As shown in fig. 6, the USB video equipment includes for the USB camera of video data acquiring, for vision signal
The video processing unit of processing, for the USB video data output interface of vision signal output, for by the data of vision signal
Type is converted into being suitable for the USB controller of the data type of USB video data output interface output；The USB camera, view
Frequency processing unit, USB controller, USB video data output interface are sequentially connected.
In addition electric power detection module is specific as follows: entire detection system is controlled by LPC2132 and data memory module, signal
Conditioning and acquisition module, multiple signals switching module and communication module composition.We realize electricity using LPC2132 control chip
The various functions of detection system.Alternating voltage and current signal switch electricity by 4052 multiple signals by signal conditioning circuit
Road exports the signal in ADE7878 sample range, and analog signals are converted to digital quantity by ADE7 878, and LPC2132 chip is logical
I2C communication interface is crossed, the data of ADE7878 is obtained, while LPC2132 switches 4052 variable connectors in due course, switches each branch
Current signal is output to ADE7878 chip.Detection system is furnished with EEPROM power down storage unit, can be by the calibration of ADE7878
Parameter and energy data storage.Communication module can carry out data communication with computer, upload is adopted by RS485 communication interface
The data information collected.
The conditioning of Hardware Design main sub-signal and acquisition module, multiple signals switching module, MCU control and
3 part of data memory module and communication module.Signal condition and acquisition module voltage sample are using electric resistance partial pressure
Mode is realized, is connected with big resistance and small resistance, is sampled small resistance both end voltage signal,
Output end VA (VB, VC) in this way exports analog voltage of the range between 0~500 mV.Analog voltage letter
It number is input in ADE7878.Signal condition and Acquisition Circuit schematic diagram.
The sensor of current sample uses current transformer, and primary side is directly actual measurement route, secondary side output
For current signal (specific output size of current as needed depending on), therefore current sample is realized by the way of series resistance, is adopted
It is realized with two resistance series connection, ac voltage signal of the range between 0~500 mV available in this way.
When carrying out multichannel electricity signal acquisition, the simulation by switching 4052 access ADE7878 chips in due course is needed to believe
Number.Due to the presence for the problems such as selecting the error of resistance itself and inputting imbalance, temperature drift, above-mentioned calculation formula zero in actual circuit
Position and linear coefficient can slightly deviation, accurate coefficient and zero-bit can be obtained by calibration.MCU control module is in order to improve
The reliability of acquisition system selects reset electricity of the LPC2132 chip based on 32 ARM7 kernels as primary processor and outside
Realize reliable reset in road.In this way using a small, cheap processor core achieve that very high instruction throughput and in real time
Interrupt response.MCU control system circuit schematic diagram.
In order to enable a system to proper reset, in such a system, resetted using Special reset chip CAT1025.CAT1025
It is integrated with system power supply monitoring circuit.When system voltage is higher than setting voltage, be delayed 200 ms activation systems, this makes system exist
Resetting time when powering on is greater than resetting time required for LPC2132 chip, makes system normal reset.Multiple signals switching
Module: this system can acquire the electric current on 4 tunnels, power or single channel electric current using an electric energy chip, power, energy data, in fact
The key of existing multichannel current detecting is to switch each road current signal access ADE7878 chip by CD4052/CC4052.
CD4052/CC4052 is 4 channel number word of a difference control analog switch, has 2 binary system control signals of A, B and INH defeated
Enter, there is low conduction impedance and very low cut-off leakage current.These switching circuits are in entire power range with extremely low quiet
State power consumption, it is unrelated with the control logic state of signal.Two binary input signals gate the channel in 4 pairs of channels, can connect
Connect the input to output.
When acquiring multichannel electric current, LPC2132 controls each tributary signal by CD4052 control terminal and accesses ADE7878 sampling
There is data setup time since ADE7878 chip interior has DSP algorithm principle in pin, therefore detect each branch current letter
Number turn-on time it is not too short, otherwise correct data does not have operation completion, and data error is larger.CD4052 is controlled in order to prevent
Signal wire interference phenomenon occurs, and control signal wire is connected pull-up resistor, influences small, reliable operation to handoff procedure in this way.Communication
Module LPC2132 chip serial communication interface using Transistor-Transistor Logic level, it cannot directly with PC machine standardized serial communication interface
Connection communication, it is necessary to design Transistor-Transistor Logic level to RS485 agreement level signal conversion circuit.MAX485 is a kind of Transistor-Transistor Logic level turn
It is changed to the chip of RS485 level.RS485 bus standard carries out data communication by the way of balance transmission and differential received, benefit
Data are transmitted with the voltage difference between signal wire A, B, belong to the signal transmission form of two-wire system.RS-485 bus is interconnected for multiple spot
When it is very convenient, many signal wires can be saved, composition distributed system can be interconnected using RS-485, allow at most parallel connection 32
Platform driver and 32 receivers, but a driver job is only allowed to synchronization on same signal wire.It is single in this system
Piece machine program is made of 3 modules, is initialization module, serial communication modular and ADE7878 communication and control module respectively.System
After system resets, single-chip microcontroller first carries out each parameter (such as serial communication baud rate) Initialize installation and reads from eeprom chip
Calibration parameter is written ADE7878 chip, realizes the accurate of electrical parameter by ADE7878 calibration parameter and the electrical energy parameter of storage
Detection.Then fixed time intervals, 4052 switching circuit of timely operation, switching acquires each road electricity data, and shows disrespect on and take ADE7878
Each road electrical parameter of acquisition in time stores electrical energy parameter to eeprom chip, and clear house dog in due course.If there is correctly leading to
Letter event occurs, then collected electricity data is uploaded data through RS485 communication interface.
The circuit that this system uses, the collecting work of multichannel electricity data can be realized with an electric energy computation chip, and
And in the specified sample range of each electricity data, for precision up to 1%, circuit is simple, flexible in application, precision is high, low in cost.
System all technical has reached design requirement, reliable operation, and has come into operation, and has higher use value, to mistake
The exploitation of the systems such as range monitoring, data acquisition has reference.
Claims (9)
1. a kind of multichannel electric power detection and alarm system based on cabinet, it is characterised in that: comprising monitor terminal and and its
The multiple cabinet terminals connected by wireless network；
The cabinet terminal includes cabinet module, USB video equipment, bar code scanner module, controller module, electricity inspection
It surveys module and data transmission module, the cabinet module passes through UART serial ports with bar code scanner module respectively and connect controller
Module, the USB video equipment connect controller module, electric power detection module and data transmission module difference by USB interface
It is connect with controller module；
The electric power detection module includes electric quantity acquisition module, conditioning circuit, multiple signals switching module, ADE7878 electric energy core
Piece, MCU module, data transmission module and data memory module；The electric quantity acquisition module successively passes through conditioning circuit, multichannel letter
Number switching module, ADE7878 electric energy chip connect MCU module, the data transmission module and data memory module respectively with MCU
Module connection.
2. a kind of multichannel electric power detection and alarm system based on cabinet according to claim 1, it is characterised in that: institute
Stating electric quantity acquisition module includes voltage acquisition module and current acquisition module.
3. a kind of multichannel electric power detection and alarm system based on cabinet according to claim 1, it is characterised in that: institute
The chip model for stating multiple signals switching module is CD4052/CC4052.
4. a kind of multichannel electric power detection and alarm system based on cabinet according to claim 1, it is characterised in that: institute
It states MCU module and chip is controlled using LPC2132.
5. a kind of multichannel electric power detection and alarm system based on cabinet according to claim 1, it is characterised in that: institute
Stating cabinet module includes cabinet cabinet, drive circuit module, detection circuit module and single-chip microcontroller；The cabinet cabinet point
It Tong Guo not drive circuit module, detection circuit module connection single-chip microcontroller.
6. a kind of multichannel electric power detection and alarm system based on cabinet according to claim 5, it is characterised in that: institute
Stating driving circuit includes sequentially connected 74LS138 decoder and triode reverse amplification circuit module.
7. a kind of multichannel electric power detection and alarm system based on cabinet according to claim 1, it is characterised in that: institute
Stating monitor terminal includes data transmit-receive module, main controller module, display module, memory module, alarm module and GSM mould
Block, the data transmit-receive module, display module, memory module, alarm module and gsm module connect with main controller module respectively
It connects.
8. a kind of multichannel electric power detection and alarm system based on cabinet according to claim 1, it is characterised in that: institute
The chip model for stating controller module is S3C6410.
9. a kind of multichannel electric power detection and alarm system based on cabinet according to claim 1, it is characterised in that: institute
State USB video equipment include for video data acquiring USB camera, for video frequency signal processing video processing unit,
For vision signal output USB video data output interface, for by the data type conversion of vision signal at being suitable for USB
The USB controller of the data type of video data output interface output；The USB camera, video processing unit, USB control
Device, USB video data output interface are sequentially connected.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820621614.5U CN208421056U (en) | 2018-04-28 | 2018-04-28 | A kind of multichannel electric power detection and alarm system based on cabinet |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820621614.5U CN208421056U (en) | 2018-04-28 | 2018-04-28 | A kind of multichannel electric power detection and alarm system based on cabinet |
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| Publication Number | Publication Date |
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| CN208421056U true CN208421056U (en) | 2019-01-22 |
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| CN201820621614.5U Expired - Fee Related CN208421056U (en) | 2018-04-28 | 2018-04-28 | A kind of multichannel electric power detection and alarm system based on cabinet |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110738816A (en) * | 2019-09-14 | 2020-01-31 | 杭州拓深科技有限公司 | electric fire early warning method based on current characteristic change |
-
2018
- 2018-04-28 CN CN201820621614.5U patent/CN208421056U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110738816A (en) * | 2019-09-14 | 2020-01-31 | 杭州拓深科技有限公司 | electric fire early warning method based on current characteristic change |
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Granted publication date: 20190122 Termination date: 20200428 |