CN110962610A - New energy bus electric quantity analysis system and method - Google Patents
New energy bus electric quantity analysis system and method Download PDFInfo
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- CN110962610A CN110962610A CN201911309714.XA CN201911309714A CN110962610A CN 110962610 A CN110962610 A CN 110962610A CN 201911309714 A CN201911309714 A CN 201911309714A CN 110962610 A CN110962610 A CN 110962610A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/12—Recording operating variables ; Monitoring of operating variables
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2200/00—Type of vehicles
- B60L2200/18—Buses
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
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Abstract
The invention discloses a system and a method for analyzing electric quantity of a new energy bus, comprising a microprocessor MCU, an electric quantity acquisition module, a signal conditioning unit, a USB interface, a data recording and storing unit and a remote network communication unit; the invention is based on recording the vehicle electric quantity consumption on site, through reading the reading of the kilowatt-hour meter or collecting the voltage and current change value of the vehicle in real time, calculate the current electric quantity consumption accumulation, store the data regularly, upload the electric quantity consumption data once a day regularly, or when receiving the remote network information, upload the electric quantity consumption value of each stage recorded by the kilowatt-hour meter or calculated by the system automatically, facilitate the vehicle management department to improve the energy-saving effect through analyzing the electric quantity consumption data analysis, grasp the vehicle running state, manage the vehicle better, find the vehicle abnormity so as to maintain in time, provide the guarantee for the safe operation of the vehicle.
Description
Technical Field
The invention belongs to the field of electric quantity analysis, relates to an electric quantity analysis technology, and particularly relates to an electric quantity analysis system and method for a new energy bus.
Background
Along with the implementation of the electric motorization of the urban buses, most of the urban buses are replaced by the electric buses, the effects on energy conservation and emission reduction are obvious, the intellectualization and networking of the electric buses bring great convenience to the operation management of the urban buses, the daily energy consumption management of each bus is very important in the daily management working process of the buses, a bus company needs to know the running energy consumption of each bus in time to form operation data so as to better manage and debug the buses,
in order to count the running data of the vehicles, a direct current electric energy meter is installed on the vehicles of part of public transport companies, personnel are arranged to record the vehicles one by one regularly, and the statistics and the reporting are time-consuming and labor-consuming, and are easy to miss the wrong record, so that the statistical data is inaccurate. In order to solve the problem, the scheme is characterized in that the existing vehicle networking platform of the vehicle is used, the recorded data of the vehicle direct current electric energy meter is automatically read or sampled by a sensor by a technical means, the recorded data is generated and periodically uploaded to the bus management platform, so that a vehicle management department can analyze the electric quantity consumption data, the energy-saving effect is improved, the running state of the vehicle is mastered, vehicle management is better performed, the vehicle is discovered to be abnormal so as to be timely maintained, and the guarantee is provided for the safe operation of the vehicle.
Disclosure of Invention
The invention aims to provide a system and a method for analyzing electric quantity of a new energy bus.
The purpose of the invention can be realized by the following technical scheme:
a new energy bus electric quantity analysis system comprises a microprocessor MCU, an electric quantity acquisition module, a signal conditioning unit, a USB interface, a data recording and storing unit and a remote network communication unit;
the microprocessor MCU is respectively connected with the data recording and storing unit, the remote network communication unit and the USB interface in an interactive signal manner;
the electric quantity acquisition module is used for acquiring electric quantity consumption data of the new energy bus in unit time; the electric quantity acquisition module comprises a current sampling unit, a voltage sampling unit and a signal conditioning unit; the current sampling unit and the voltage sampling unit are electrically connected with the signal conditioning unit, and the signal conditioning unit is in communication connection with the microprocessor MCU;
the current sampling unit is used for acquiring current change information of the output end of the electric automobile in real time and transmitting the current change information to the signal conditioning unit; the voltage sampling unit is used for acquiring voltage change information of the output end of the electric automobile in real time and transmitting the voltage change information to the signal conditioning unit;
the signal conditioning unit receives the current change information transmitted by the current sampling unit and the voltage change information transmitted by the voltage sampling unit, and transmits the current change information and the voltage change information to the microprocessor MCU for real-time calculation to obtain the electric quantity consumption value accumulation in unit time and obtain electric quantity consumption data; and the microprocessor MCU is used for transmitting the electric quantity consumption data to the data recording and storing unit for storage, refreshing the electric quantity consumption data at regular intervals, and automatically uploading or remotely reading the electric quantity consumption data of the vehicle in unit time through the remote network communication unit.
Furthermore, the electric quantity acquisition module is a watt-hour meter interface which is a direct current watt-hour meter interface of the electric automobile; the electric meter interface is electrically connected with the microprocessor MCU, and a direct current electric meter is connected on the electric meter interface; the electric vehicle direct current electric meter interface is connected with the microprocessor MCU, and the microprocessor MCU reads the metering value of the electric meter through the interface.
Furthermore, the interface of the electric meter is a 485 interface or an infrared interface; the direct current watt-hour meter is connected with the microprocessor MCU through a 485 interface or an infrared interface, and reads electric quantity consumption data through a DL/T645-1997 multifunctional electric energy meter communication protocol.
Further, the current change information is real-time current information changing along with time; the voltage change information is real-time voltage information changing along with time;
and the microprocessor MCU is also used for generating abnormal information when any one of the real-time current information and the real-time voltage information exceeds a preset range, wherein the abnormal information is a current abnormal signal and corresponding current abnormal generation time or a voltage abnormal signal and corresponding voltage abnormal generation time.
Further, the data recording and storing unit is a data memory or a memory card; the microprocessor MCU also reads the internet time through the remote network communication unit at regular time, so that the recorded time and the internet time are kept synchronous.
A new energy bus electricity quantity analysis method comprises the following steps:
the method comprises the following steps: the voltage sampling unit is connected to the total voltage output end of the power battery pack of the electric automobile through a voltage sampling sensor, the current sampling unit is connected in series to an output current loop of the power battery through a current sampling sensor, and when the electric automobile works, voltage and current change values of the electric automobile are respectively collected by the voltage sensor and the current sensor;
step two: converting the voltage signals into 0-5V voltage signals through a signal conditioning unit, respectively collecting the voltage signals by a microprocessor MCU, converting the voltage signals into electric quantity consumption values in units, accumulating the electric quantity consumption values to obtain the latest electric quantity consumption value, and periodically writing the latest electric quantity consumption value into a data recording storage unit;
step three: refreshing the last written data; meanwhile, when the voltage and the current values exceeding the preset range are detected, acquiring the occurrence time when the voltage and the current values exceed the abnormal range to form abnormal information, and writing the abnormal information into a data recording and storing unit together, wherein the information comprises the current information type, the sampling value, the occurrence time and the duration time;
step four: the microprocessor MCU uploads the electricity consumption data once every day at regular time, or automatically uploads the electricity consumption information or the abnormal operation information of the vehicle stored through external data storage when receiving the remote network information.
The invention has the beneficial effects that:
the invention is based on recording the vehicle electric quantity consumption on site, through reading the reading of the kilowatt-hour meter or collecting the voltage and current change value of the vehicle in real time, calculate the current electric quantity consumption accumulation, store the data regularly, upload the electric quantity consumption data once a day regularly, or when receiving the remote network information, upload the electric quantity consumption value of each stage recorded by the kilowatt-hour meter or calculated by the system automatically, facilitate the vehicle management department to improve the energy-saving effect through analyzing the electric quantity consumption data analysis, grasp the vehicle running state, manage the vehicle better, find the vehicle abnormity so as to maintain in time, provide the guarantee for the safe operation of the vehicle.
Drawings
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
FIG. 1 is a block diagram of the system of the present invention.
Detailed Description
As shown in fig. 1, the device comprises a microprocessor MCU, an electric quantity acquisition module, a signal conditioning unit, a USB interface, a data recording and storing unit, and a remote network communication unit;
the microprocessor MCU is respectively connected with the data recording and storing unit, the remote network communication unit and the USB interface in an interactive signal manner;
the electric quantity acquisition module is used for acquiring electric quantity consumption data of the new energy bus in unit time; when the specific selection is performed, the specific composition of the electric quantity acquisition module may adopt the following parts, for example, including a current sampling unit, a voltage sampling unit and a signal conditioning unit; the current sampling unit and the voltage sampling unit are electrically connected with the signal conditioning unit, and the signal conditioning unit is in communication connection with the microprocessor MCU;
the current sampling unit is used for acquiring current change information of the output end of the electric automobile in real time and transmitting the current change information to the signal conditioning unit; the voltage sampling unit is used for acquiring voltage change information of the output end of the electric automobile in real time and transmitting the voltage change information to the signal conditioning unit;
the signal conditioning unit receives the current change information transmitted by the current sampling unit and the voltage change information transmitted by the voltage sampling unit, and transmits the current change information and the voltage change information to the microprocessor MCU for real-time calculation to obtain the electric quantity consumption value accumulation in unit time and obtain electric quantity consumption data, wherein the calculation mode is common general knowledge in the prior art, and therefore specific details are not repeated; and the microprocessor MCU is used for transmitting the electric quantity consumption data to the data recording and storing unit for storage, refreshing the electric quantity consumption data at regular intervals, and automatically uploading or remotely reading the electric quantity consumption data of the vehicle in unit time through the remote network communication unit.
Certainly, when the vehicle is not provided with the current sampling unit, the voltage sampling unit and the signal conditioning unit, the electric quantity acquisition module provided by the application can be replaced by a watt-hour meter interface, specifically, for example, the electric quantity acquisition module is a watt-hour meter interface, and the watt-hour meter interface is a direct current watt-hour meter interface of the electric vehicle; the electric meter interface is electrically connected with the microprocessor MCU, and a direct current electric meter is connected on the electric meter interface; the electric vehicle direct current electric meter interface is connected with the microprocessor MCU, and the microprocessor MCU reads the metering value of the electric meter through the interface. Therefore, the same functions as those of the current sampling unit, the voltage sampling unit and the signal conditioning unit are realized, and any one of the current sampling unit, the voltage sampling unit and the signal conditioning unit can be selected.
The interface of the electric meter is a 485 interface or an infrared interface; the direct current watt-hour meter is connected with the microprocessor MCU through a 485 interface or an infrared interface, and reads electric quantity consumption data through a DL/T645-1997 multifunctional electric energy meter communication protocol.
The current change information is real-time current information changing along with time; the voltage change information is real-time voltage information changing along with time;
and the microprocessor MCU is also used for generating abnormal information when any one of the real-time current information and the real-time voltage information exceeds a preset range, wherein the abnormal information is a current abnormal signal and corresponding current abnormal generation time or a voltage abnormal signal and corresponding voltage abnormal generation time.
The data recording and storing unit is a data memory or a memory card; the microprocessor MCU also reads the internet time through the remote network communication unit at regular time, so that the recorded time and the internet time are kept synchronous.
A new energy bus electricity quantity analysis method comprises the following steps:
the method comprises the following steps: the voltage sampling unit is connected to the total voltage output end of the power battery pack of the electric automobile through a voltage sampling sensor, the current sampling unit is connected in series to an output current loop of the power battery through a current sampling sensor, and when the electric automobile works, voltage and current change values of the electric automobile are respectively collected by the voltage sensor and the current sensor;
step two: converting the voltage signals into 0-5V voltage signals through a signal conditioning unit, respectively collecting the voltage signals by a microprocessor MCU, converting the voltage signals into electric quantity consumption values in units, accumulating the electric quantity consumption values to obtain the latest electric quantity consumption value, and periodically writing the latest electric quantity consumption value into a data recording storage unit;
step three: refreshing the last written data; meanwhile, when the voltage and the current values exceeding the preset range are detected, acquiring the occurrence time when the voltage and the current values exceed the abnormal range to form abnormal information, and writing the abnormal information into a data recording and storing unit together, wherein the information comprises the current information type, the sampling value, the occurrence time and the duration time;
step four: the microprocessor MCU uploads the electricity consumption data once every day at regular time, or automatically uploads the electricity consumption information or the abnormal operation information of the vehicle stored through external data storage when receiving the remote network information.
The working principle of the invention is as follows:
the voltage sampling unit is connected to the total voltage output end of the power battery pack of the electric automobile through a voltage sampling sensor, the current sampling unit is connected in series to an output current loop of the power battery through a current sampling sensor, and when the electric automobile works, voltage and current change values of the electric automobile are respectively collected by the voltage sensor and the current sensor;
the voltage signals are converted into 0-5V voltage signals through a signal conditioning unit, the voltage signals are respectively collected by a microprocessor MCU, converted into electric quantity consumption values in a unit and accumulated to obtain the latest electric quantity consumption value, the latest electric quantity consumption value is periodically written into a data recording storage unit, the last written data is refreshed, in order to further know the running state of the vehicle or facilitate the analysis of abnormal running information of the vehicle, the current values and relevant parameters such as the voltage and the current values exceeding normal values and the occurrence time of the current values are written into the data recording storage unit, and the information comprises the current information type, sampling values, the occurrence time, the duration and other parameters.
The data recording and storing unit is a large-capacity data memory or a memory card. In order to accurately record the time after the event, the microprocessor MCU reads the Internet time through the remote network communication unit at regular time, so that the recorded time is kept synchronous with the Internet time.
The microprocessor MCU uploads the electricity consumption data once every day at regular time, or automatically uploads the electricity consumption information or the abnormal operation information of the vehicle stored through external data storage when receiving the remote network information.
In order to adapt to different information accesses, on a vehicle provided with an electric energy meter, a watt-hour meter interface is reserved in the system, the system can be connected with a microprocessor MCU through a direct current watt-hour meter interface of an electric vehicle, the watt-hour meter collects vehicle electric quantity consumption data in real time through a current and voltage sampling circuit and generates an electric quantity consumption value, the data is connected with the microprocessor MCU through a 485 interface or an infrared interface through the direct current watt-hour meter, and the electric energy consumption value is read through a DL/T645 and 1997 multifunctional electric energy meter communication protocol or other similar communication protocols.
The foregoing is merely exemplary and illustrative of the present invention and various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the scope of the invention as defined in the following claims.
Claims (6)
1. A new energy bus electric quantity analysis system is characterized by comprising a microprocessor MCU, an electric quantity acquisition module, a signal conditioning unit, a USB interface, a data recording and storing unit and a remote network communication unit;
the microprocessor MCU is respectively connected with the data recording and storing unit, the remote network communication unit and the USB interface in an interactive signal manner;
the electric quantity acquisition module is used for acquiring electric quantity consumption data of the new energy bus in unit time; the electric quantity acquisition module comprises a current sampling unit, a voltage sampling unit and a signal conditioning unit; the current sampling unit and the voltage sampling unit are electrically connected with the signal conditioning unit, and the signal conditioning unit is in communication connection with the microprocessor MCU;
the current sampling unit is used for acquiring current change information of the output end of the electric automobile in real time and transmitting the current change information to the signal conditioning unit; the voltage sampling unit is used for acquiring voltage change information of the output end of the electric automobile in real time and transmitting the voltage change information to the signal conditioning unit;
the signal conditioning unit receives the current change information transmitted by the current sampling unit and the voltage change information transmitted by the voltage sampling unit, and transmits the current change information and the voltage change information to the microprocessor MCU for real-time calculation to obtain the electric quantity consumption value accumulation in unit time and obtain electric quantity consumption data; and the microprocessor MCU is used for transmitting the electric quantity consumption data to the data recording and storing unit for storage, refreshing the electric quantity consumption data at regular intervals, and automatically uploading or remotely reading the electric quantity consumption data of the vehicle in unit time through the remote network communication unit.
2. The system for analyzing the electric quantity of the new energy bus according to claim 1, wherein the electric quantity collection module is a watt-hour meter interface, and the watt-hour meter interface is an electric automobile direct current watt-hour meter interface; the electric meter interface is electrically connected with the microprocessor MCU, and a direct current electric meter is connected on the electric meter interface; the electric vehicle direct current electric meter interface is connected with the microprocessor MCU, and the microprocessor MCU reads the metering value of the electric meter through the interface.
3. The system for analyzing the electric quantity of the new energy bus as claimed in claim 2, wherein the interface of the electric meter is a 485 interface or an infrared interface; the direct current watt-hour meter is connected with the microprocessor MCU through a 485 interface or an infrared interface, and reads electric quantity consumption data through a DL/T645-1997 multifunctional electric energy meter communication protocol.
4. The system for analyzing the electric quantity of the new energy bus according to claim 1, wherein the current change information is real-time current information which changes along with time; the voltage change information is real-time voltage information changing along with time;
and the microprocessor MCU is also used for generating abnormal information when any one of the real-time current information and the real-time voltage information exceeds a preset range, wherein the abnormal information is a current abnormal signal and corresponding current abnormal generation time or a voltage abnormal signal and corresponding voltage abnormal generation time.
5. The system for analyzing the electric quantity of the new energy bus according to claim 1, wherein the data recording and storing unit is a data memory or a memory card; the microprocessor MCU also reads the internet time through the remote network communication unit at regular time, so that the recorded time and the internet time are kept synchronous.
6. The method for analyzing the electric quantity of the new energy bus according to any one of claims 1 to 5, characterized by comprising the following steps:
the method comprises the following steps: the voltage sampling unit is connected to the total voltage output end of the power battery pack of the electric automobile through a voltage sampling sensor, the current sampling unit is connected in series to an output current loop of the power battery through a current sampling sensor, and when the electric automobile works, voltage and current change values of the electric automobile are respectively collected by the voltage sensor and the current sensor;
step two: converting the voltage signals into 0-5V voltage signals through a signal conditioning unit, respectively collecting the voltage signals by a microprocessor MCU, converting the voltage signals into electric quantity consumption values in units, accumulating the electric quantity consumption values to obtain the latest electric quantity consumption value, and periodically writing the latest electric quantity consumption value into a data recording storage unit;
step three: refreshing the last written data; meanwhile, when the voltage and the current values exceeding the preset range are detected, acquiring the occurrence time when the voltage and the current values exceed the abnormal range to form abnormal information, and writing the abnormal information into a data recording and storing unit together, wherein the information comprises the current information type, the sampling value, the occurrence time and the duration time;
step four: the microprocessor MCU uploads the electricity consumption data once every day at regular time, or automatically uploads the electricity consumption information or the abnormal operation information of the vehicle stored through external data storage when receiving the remote network information.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112327177A (en) * | 2020-11-03 | 2021-02-05 | 镇江市公共交通有限公司 | Method and device for testing abnormal electricity consumption of new energy automobile |
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| WO1990004188A1 (en) * | 1988-10-14 | 1990-04-19 | Allied-Signal Inc. | Automotive battery status monitor |
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Application publication date: 20200407 |