CN105092962A - Train energy consumption metering and statistic module with function of warehouse access statistics - Google Patents

Train energy consumption metering and statistic module with function of warehouse access statistics Download PDF

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Publication number
CN105092962A
CN105092962A CN201510453564.5A CN201510453564A CN105092962A CN 105092962 A CN105092962 A CN 105092962A CN 201510453564 A CN201510453564 A CN 201510453564A CN 105092962 A CN105092962 A CN 105092962A
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China
Prior art keywords
energy consumption
processor
train
inbound
outbound
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Pending
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CN201510453564.5A
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Chinese (zh)
Inventor
王啸
周峰
陈裕
梅嘉伦
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NINGBO CSR TIMES TRANSDUCER TECHNIQUE CO Ltd
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NINGBO CSR TIMES TRANSDUCER TECHNIQUE CO Ltd
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Priority to CN201510453564.5A priority Critical patent/CN105092962A/en
Publication of CN105092962A publication Critical patent/CN105092962A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a train energy consumption metering and statistic module with a function of warehouse access statistics, and the module comprises a low-pass filter sampling circuit, an amplification circuit, an analog-digital converter, a processor, and a radio-frequency recognition unit. A current signal outputted by an electric quantity sensor on a train is converted into a voltage signal through the low-pass filter sampling circuit, and the voltage signal is transmitted to the analog-digital converter through the amplification circuit. After analog-digital conversion, the voltage signal is inputted into the processor, and the processor reads the converted digital signal and carries out energy consumption metering and statistics. The radio-frequency recognition unit reads a radio frequency tag to judge the warehouse access information of a train, and enables the warehouse access information to be transmitted to the processor. The processor enables the warehouse access information and the energy consumption information to be transmitted to a data processing center. The module achieves the real-time metering, statistics, storage and uploading of the electric energy consumption data of the train while obtaining the warehouse access information of the train through the radio frequency identification technology.

Description

There is the train energy consumption quantitative statistics module of inbound/outbound process statistical function
Technical field
The present invention relates to the quantitative statistics module of train electric energy energy consumption.
Background technology
The level of urbanization of China improves day by day, day by day serious traffic jam issue and the problem such as energy crisis, environmental pollution weave in, and track traffic, as green, the energy-saving vehicles, has become the main traffic instrument of citizens' activities.Because City Rail Transit System composition is complicated, number of devices is numerous, it still needs to consume mass energy in operation process, if in planning, design, to build and each link such as operation carries out energy saving research, planning and management work, to a certain extent or can economize energy.Current, in domestic and international field of urban rail, the technology that subway train carries out energy consumption measure is still in conceptual phase.Famous enterprise both domestic and external is also in the corresponding energy meter instrument of exploitation, but generally this kind equipment only possesses the function of metering energy consumption, function singleness, brings difficulty to the management of energy consumption, the analysis of data, and train enters storehouse identification equipment and energy consumption measure equipment is separate.
Summary of the invention
Technical matters to be solved by this invention be overcome prior art above-mentioned deficiency and a kind of train energy consumption quantitative statistics module with inbound/outbound process statistical function is provided, while obtaining train inbound/outbound process information by REID, realize real time measure, the statistics of vehicle power consumption data, preserve and upload.
The present invention's adopted technical scheme that solves the problem is: the train energy consumption quantitative statistics module with inbound/outbound process statistical function, comprise low-pass filtering sample circuit, amplifying circuit, analog to digital converter, processor, rfid uint, the current signal that electrical quantity sensor on train exports is converted to voltage signal by low-pass filtering sample circuit, analog to digital converter is delivered to by amplifying circuit after filtering, input processor after analog to digital conversion, the digital signal after processor reads conversion also carries out energy consumption measure, statistics according to algorithm; Rfid uint reads radio-frequency (RF) tag and judges train discrepancy library information, and discrepancy library information is delivered to processor, and discrepancy library information, consumption information are sent to data processing centre (DPC) by processor.
The energy consumption measure statistical module of further improvement also comprises the debugging interface be connected with processor, and peripheral hardware computing machine connects the running status of debugging interface working procedure debug processor.
The energy consumption measure statistical module further improved also comprises data storage cell, real-time clock, and storage unit, real-time clock are all connected with processor, and storage unit stores the operation result of processor, and real-time clock provides time reference for processor.
The invention has the advantages that: the data that energy consumption measure statistical module can gather according to multiple sensor, analyzed by energy consumption calculation, train energy consumption can be divided into train traction energy consumption, auxiliary energy consumption, regeneration energy consumption, energy consumption measure statistical module can also mark multichannel energy consumption measure, according to the different circuit feature flexible combination of each vehicle, realize the configuration of different automobile types high performance-price ratio.By REID, energy consumption measure statistical module also judges that train goes out the state of warehouse-in, discrepancy library information, consumption information are sent to peripheral apparatus by processor, so that train controlling center carries out Train Control according to consumption information, library information of coming in and going out.
Accompanying drawing explanation
Fig. 1 is energy consumption measure statistical module circuit theory diagrams.
Embodiment
Below in conjunction with accompanying drawing, embodiment, the present invention is further described.
As shown in Figure 1, the train energy consumption quantitative statistics module with inbound/outbound process statistical function is connected with electrical quantity sensor, transceiver.High voltage on each parts of electrical quantity sensor detection train and big current, comprise powered bow net pressure signal, two-way traction current, a road auxiliary inversion electric current, the road stalling current on train, and high voltage, big current signal are converted to small area analysis signal according to certain relation, small area analysis signal is exported to energy consumption measure statistical module by electrical quantity sensor.
The train energy consumption quantitative statistics module with inbound/outbound process statistical function comprises low-pass filtering sample circuit, amplifying circuit, analog to digital converter (ADC), processor (CPU), radio-frequency (RF) identification (RFID) unit, the current signal that electrical quantity sensor exports is converted to voltage signal by the sampling resistor in low-pass filtering sample circuit, and after analog to digital conversion, inputting CPU by low-pass filter circuit, CPU reads the digital signal after conversion in real time and carries out energy consumption measure, statistics according to algorithm.
Above-mentioned low-pass filtering sample circuit adopts RC filtering circuit, the cutoff frequency of filtering circuit is determined according to the sampling rate of ADC, object is in order to anti-input aliasing, the frequency of the sensor output signal on train is then depended in the selection of the sample frequency of ADC, meet the requirement of Shannon-nyquist sampling law.
In order to improve precision, prime sampling resistor selects the precision resistance of lower temperature coefficient, but also needs to meet the requirement of the sensor on train to output impedance, and deliver to ADC by amplifying circuit afterwards, enlargement factor meets the full scale input range of ADC as far as possible,
In the present invention, above-mentioned ADC selects AD7606, this device can single power supply and bipolarity input, be 14 SAR ADC, throughput reaches 200kSPS, and signal to noise ratio (S/N ratio) is 85.5dB(50kSPS), be applicable to using accuracy requirement and the high occasion of requirement of real-time, digital interface is SPI interface, conveniently communicates with CPU.In the present invention, CPU adopts dual core processor, and this processor is made up of an ARMCortexM3 kernel and a C28xDSP kernel, and double-core is independent mutually, DSP endorses the primary processor as energy consumption measure algorithm, and ARM endorses the primary processor of the communication interface enriched as outside.
On the other hand, radio-frequency (RF) tag is increased in train garage, RFID unit in energy consumption measure statistical module can read radio-frequency (RF) tag by antenna, Real-Time Monitoring train is in field, garage or outside the venue, and this information is passed to CPU and do aggregation of data packing work, CPU then can report consumption information by transceiver in real time as requested, library information to data processing centre (DPC) of coming in and going out carries out data analysis and preservation, data processing centre (DPC) can according to the information of module to train coding etc.
Data report process to be divided into report separately and concentrate and report two kinds of modes, report separately namely each energy consumption measure unit alone earthward Data Control Center carry out data and report, data transmit-receive is undertaken by the wireless channel of GPRS, concentrating and report, is that data are first reported train information management system by train bus-line by energy consumption measure unit, be sent to ground data control center by train information management system is unified again, train bus-line here can be MVB or train industry ethernet.The power consumption data of ground data control center image data processing enter, and take suitable Train Control mode to make train accomplish optimum on energy-conservation.
Due to the complicacy of train power utilization environment and the abominable of electromagnetic environment, this energy consumption measure statistical module and electrical quantity sensor adopt the mode of isolating, wherein power supply input and output all adopt insulating power supply, isolation voltage is 1500VAC, data sampling adopts the magnetic coupling chip of ADI company to isolate in digital side, and the corresponding employing transformer that communicates is isolated.Safety and the reliability service of energy consumption metering outfit can be ensured.
In order to debug energy consumption measure statistical module, energy consumption measure statistical module also comprises debugging interface, and peripheral hardware computing machine connects CPU by debugging interface, whether good and other running status by the operation of corresponding program the algorithm debugs CPU.
For further expanding function, energy consumption measure statistical module also comprises data storage cell, real-time clock, and storage unit, real-time clock are all connected with CPU.Energy consumption data after CPU quantitative statistics is stored by data storage cell, and real-time clock provides precise time benchmark for CPU.
Said memory cells adopts the cooperation of SRAM and FLASH, and FLASH adopts NOR chip, and takes equalization processing, to ensure the reliability application of FLASH to greatest extent.Sram chip selects built-in real-time clock chip, and power supply considers that system adopts the mode of super capacitor to power to the requirement of vibration, can meet the power down requirement of month.
The state of initialization peripheral hardware is entered after energy consumption measure statistical module has powered on, when being then configured the reading of parameter, school, data server connects, and then controls the functions such as peripheral hardware data acquisition, energy consumption calculation, Clockreading, data packing, data storage, communication.

Claims (7)

1. there is the train energy consumption quantitative statistics module of inbound/outbound process statistical function, it is characterized in that: it comprises low-pass filtering sample circuit, amplifying circuit, analog to digital converter, processor, rfid uint, the current signal that electrical quantity sensor on train exports is converted to voltage signal by low-pass filtering sample circuit, analog to digital converter is delivered to by amplifying circuit after filtering, input processor after analog to digital conversion, the digital signal after processor reads conversion also carries out energy consumption measure, statistics according to algorithm; Rfid uint reads radio-frequency (RF) tag and judges train discrepancy library information, and discrepancy library information is delivered to processor, and discrepancy library information, consumption information are sent to data processing centre (DPC) by processor.
2. the train energy consumption quantitative statistics module with inbound/outbound process statistical function according to claim 1, is characterized in that: also comprise the debugging interface be connected with processor, and peripheral hardware computing machine connects the running status of debugging interface working procedure debug processor.
3. the train energy consumption quantitative statistics module with inbound/outbound process statistical function according to claim 1, it is characterized in that: described energy consumption measure statistical module also comprises data storage cell, real-time clock, storage unit, real-time clock are all connected with processor, storage unit stores the operation result of processor, and real-time clock provides time reference for processor.
4. the train energy consumption quantitative statistics module with inbound/outbound process statistical function according to claim 1, it is characterized in that: described low-pass filtering sample circuit adopts RC filtering circuit, the cutoff frequency of filtering circuit is determined according to the sampling rate of ADC, and sampling resistor selects the precision resistance of low-temperature coefficient.
5. the train energy consumption quantitative statistics module with inbound/outbound process statistical function according to claim 1, is characterized in that: described analog to digital converter is AD7606.
6. the train energy consumption quantitative statistics module with inbound/outbound process statistical function according to claim 1, it is characterized in that: described energy consumption measure statistical module and electrical quantity sensor adopt the mode of isolating, wherein power supply input and output all adopt insulating power supply, data sampling adopts magnetic coupling chip to isolate in digital side, and the corresponding employing transformer that communicates is isolated.
7. the train energy consumption quantitative statistics module with inbound/outbound process statistical function according to claim 3, it is characterized in that: described storage unit adopts SRAM and FLASH to coordinate, FLASH adopts NOR chip, and takes equalization processing, and sram chip selects built-in real-time clock chip.
CN201510453564.5A 2015-07-29 2015-07-29 Train energy consumption metering and statistic module with function of warehouse access statistics Pending CN105092962A (en)

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Address after: 315021 Zhejiang Province, Ningbo Jiangbei District Yongjiang Industrial Park No. 138 vibration Yonglu

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Application publication date: 20151125