CN101576589A - Distributed super-capacitor monitoring system based on iCAN protocol - Google Patents
Distributed super-capacitor monitoring system based on iCAN protocol Download PDFInfo
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Abstract
The invention provides to a distributed super-capacitor monitoring system based on an iCAN protocol, relating to an automobile-used super-capacitor monitoring system and comprising a monitoring system main node, capacitor detection sub-nodes, a liquid crystal display diagnostic apparatus and a CAN bus network; and the monitoring system main node is respectively connected with all capacitance detection sub-nodes, and is connected with an automobile instrument system by the CAN bus meeting an SAEJ1939 protocol. The monitoring system main node has a total current measuring interface and a total voltage measuring interface and is respectively connected with a current sensor and a voltage sensor so as to detect the total current and the total voltage of the super-capacitor groups; the monitoring system main node is connected with the liquid crystal display diagnostic apparatus; all sub-nodes respectively detects voltage of each super-capacitor and is connected with a temperature sensor of each capacitor so as to detect the surface temperature of the capacitor; and all sub-nodes and the main node carry out iCAN network communication. The invention is based on the iCAN protocol and is an automobile-used super-capacitor monitoring system with high intelligent degree and accurate measurement.
Description
Technical field
The present invention relates to the supervisory system of automobile-used super capacitor, especially a kind of distributed super-capacitor monitoring system based on the iCAN agreement.
Background technology
Super-capacitor monitoring system is to adopt the gordian technique of ultracapacitor as the vehicle of electrical source of power.For making super capacitor under various conditions of work, obtain best performance, the monitoring system that needs high-performance, high reliability, this monitoring system should be monitored the super capacitor state in real time, as voltage, charging and discharging currents, serviceability temperature etc., and prediction super capacitor internal resistance, capacity, prevent super-charge super-discharge, promote super capacitor usability and life-span thereby reach, improve the reliability of vehicle and the purpose of security, but super-capacitor monitoring system of the prior art also is difficult to reach the above object.
The ICAN agreement is a kind of application layer protocol that connects based on CAN-bus of Guangzhou Zhiyuan Electronics Co., Ltd.'s independent research, is the basis and the core of whole iCAN system.Plurality of advantages such as the iCAN agreement has simple, easy-to-use, and is reliable more and more have been applied to industry spot.The thinking of formulating the iCAN agreement stems from for the middle-size and small-size CAN-bus application network of China provides a kind of simple, reliable, stable application layer protocol, on the basis of the quintessence of fully having drawn DeviceNet agreement and CANopen agreement, preferential reliability and the real-time that ensures communication data, carry out data communication in simple relatively mode, thereby effectively reduce hardware implementation cost.
ICAN provides a kind of CAN-bus network that is easy to make up for industrial control field, for being connected between industrial field device (sensor, instrument etc.) and the management equipment (industrial computer, PLC etc.) provides a kind of low cost solution.The definition that the iCAN agreement is detailed the distribution and the application of ID and data in the CAN message, and defined the I/O resource and the access rule of equipment.
ICAN agreement Communication Layer structure as shown in Figure 1.
The iCAN protocol specification has mainly been described following content:
ICAN message format definition: stipulated the use of the CAN frame type that uses in the iCAN agreement and frame ID, message data etc.
Message Protocol: stipulated based on the communication modes between the equipment of iCAN agreement.
The definition of equipment: device identification, equipment applying unit, device talk and application parameter and definition standard device type, distinguish equipment has on the network difference in functionality or product type.
Network management: stipulated device talk monitoring and mismanage.
The topological structure of iCAN protocol network meets high speed modular [ISO99-2] regulation of CAN, and the iCAN network is supported 64 nodes at most, is connected with branch line between node and the network cable.Require the branch line in the network short as far as possible when practical application, under 1Mbps speed, branch line is the longest to be 0.3m, and under the lower situation of speed, branch line can prolong.The communication distance of iCAN network maximum is relevant with the communication speed in the network, below form 1 be the relation between bit rate and the maximum total line length in the iCAN network.
Form 1 bit rate and maximum total line length
| Bit rate/kbps | 1000 | 500 | 250 | 125 | 100 | 50 | 20 | 10 |
| Ultimate range/m | 40 | 130 | 270 | 530 | 620 | 1300 | 3300 | 6700 |
The addressing of the iCAN network equipment: in the iCAN protocol specification, a unique ident value MAC ID is all arranged, be used for distinguishing the different equipment of network for any one node in the network.The numerical range of MAC ID defines form 2 as follows:
Form 2MAC ID numerical range
| MAC ID value scope | 0-63 (decimal number) |
Therefore each node all has specific MAC ID in the iCAN network, and different data between nodes exchanges are based on that addressing to node realizes in the iCAN network.In the CAN network, carry out the differentiation of information by the identifier of message, therefore can distribute the connection purpose that reaches the information of foundation by the various indications of message.The CAN Frame that transmits in network has comprised the destination, and the source address of node.Therefore, each frame all is a node or a group node that mails to an appointment, and node is by judging the node address in the network message in the network, and whether decision is handled message.The iCAN agreement has also kept specific address and one group node or all nodes (broadcasting) is carried out addressing and carry out the frame transmission in addition.And the iCAN agreement is basis by the data communication that connects and confirm based on the communication modes of node addressing.
ICAN is based on the communications protocol of connection, is the network of master-slave mode based on the network of iCAN agreement.A main control equipment is arranged in the iCAN network usually, have on the supervising the network other equipment, and monitor the function of whole network.Can not carry out communication between each slave unit.
Communication in the iCAN network between the equipment is based on connection.Connect like a bridge block equally here, play and link up main website equipment and from the effect of station equipment.In network any one participate in communication from station equipment all must and main website equipment between set up an independently communication connection.Just since in the iCAN network communication between the equipment be based on connection, so also provide possible for the communication of any one equipment is monitored.In the iCAN network, the communication between main control equipment and the slave unit can not be carried out at random.Must at first set up a communication between main control equipment and the slave unit connects.After connecting, main control equipment can carry out communication with slave unit.
Aspect software design and development, Guangzhou Zhiyuan Electronics Co., Ltd. provides special-purpose Development Engineering template for the user, has simplified user's software development process greatly.File system, ICP/IP protocol stack, usb protocol stack, iCAN storehouse, basic Driver Library and μ C/OS-II operating system etc. have been had cured in the industry control module, therefore the user does not need μ C/OS-II kernel is configured, and can only use the configuration information that has set.
Main SDK (Software Development Kit) is ADS v1.2, and ARM ADS full name is ARM DeveloperSuite, is the integrated developing instrument of ARM of new generation that ARM company releases.ADS is by the order line developing instrument, real storehouse during ARM, and GUI development environment (Code Warrior and AXD), utility routine and support software are formed.These parts have been arranged, and the user just can write and debugged the developing application of oneself for the risc processor of ARM series.This ADS software self has the AXD debugger software, supports to check the variable of the executable code that is moving and the debugging operations such as control of breakpoint, and debug object program improves program development efficient easily.
As shown in Figure 2, be the software flow pattern of monitoring system host node.The The software modularization programming of host node, system software mainly are divided into master routine, data acquisition (voltage, electric current) handling procedure, the processing of reporting to the police, the communication of J1939 message, iCAN scan communication program.Master routine is a system control program, realizes system is carried out the overall scheduling of initialization (comprise System self-test, read this node address, capacitance voltage kind) and each module software.
As shown in Figure 3, be the software flow pattern of monitoring system child node.The data acquisition process program of child node comprises voltage acquisition and temperature acquisition.Because the temperature transition time of DS18S20 is grown (750ms),, carry out the collection of temperature again so gather advanced trip temperature conversion, voltage acquisition at every turn.Temperature transition and voltage acquisition carry out synchronously.Each will be handled data after taking turns collection, judges whether to surpass limit value.The data that the iCAN signal procedure is responsible for collecting send to the CAN controller, are responsible for data are sent to the CAN bus by the CAN controller again.Main subroutine has: CAN initialization, CAN send, CAN receives, the ADC subroutine, the resetting of DS18S20, startup etc.
Summary of the invention
The objective of the invention is agreement, a kind of intelligent degree height is provided, measures automobile-used accurately super-capacitor monitoring system based on iCAN.
The object of the present invention is achieved like this:
A kind of distributed super-capacitor monitoring system based on the iCAN agreement comprises supervisory system host node, capacitance detecting child node, LCD diagnostic equipment and CAN bus network;
The supervisory system host node has respectively and is connected with each capacitance detecting child node, and is connected with the instrument system of vehicle by the CAN bus that meets the SAEJ1939 agreement.
System is made up of 1 supervisory system host node and 30 sub-nodes.The supervisory system host node has total current and measures interface and total voltage measurement interface, connects current sensor and voltage sensor respectively, detects the total current and the total voltage of bank of super capacitors;
The supervisory system host node connects the liquid crystal display diagnostic equipment;
The supervisory system host node also can have relay interface.
Each child node detects the voltage of each super capacitor respectively; And be connected with the temperature sensor of each electric capacity, to detect the capacitive surface temperature;
Each child node and host node carry out the iCAN network communication.
Owing to adopted above technical scheme, the distributed super-capacitor monitoring system that the present invention is based on the iCAN agreement has intelligent degree height, measures accurately, can in time find the advantage of the initial failure that bank of super capacitors exists, the stability of system is high, have the real-time response ability, strengthened the extensibility and the portability of system.
Description of drawings
Fig. 1 represents the communication layers structure of iCAN agreement.
Fig. 2 represents the software flow pattern of monitoring system host node.
Fig. 3 represents the software flow pattern of monitoring system child node.
Fig. 4 is the synoptic diagram of the distributed super-capacitor monitoring system based on the iCAN agreement of the present invention.
Embodiment
Below, describe in detail according to a preferred embodiment of the invention in conjunction with the accompanying drawings.For convenience of description and highlight the present invention, omitted existing associated components in the prior art in the accompanying drawing, and will omit description these well-known components.
Shown in Figure 4 is according to a kind of embodiment that the present invention is based on the distributed super-capacitor supervisory system of iCAN agreement: comprise supervisory system host node, capacitance detecting child node, liquid crystal display LCD diagnostic equipment and CAN bus network.The monitoring system of this specific embodiment is made up of 1 host node and 30 sub-nodes.
The supervisory system host node is connected with each capacitance detecting child node respectively, and has SAEJ1939 agreement CAN bus interface, is connected with the instrument system of vehicle.
The supervisory system host node is provided with total voltage and measures interface, detects the total voltage of bank of super capacitors.Can be external the NCV1-1000V voltage sensor measure (0-650V, ± 5V) DC voltage;
The supervisory system host node is provided with total current and measures interface, detects the total current of bank of super capacitors.Input current 0-120mA, can external NT300-S current sensor measurement (rated current 300 ± 3A, the DC current of maximum measurement range ± 300A);
The supervisory system host node is supported 320 * 240 single color LCDs screen LCD diagnostic equipment, is used for display system duty, input alarm threshold parameter.
The supervisory system host node connects the output of No. 2 relay dry contacts, can drive 2 blower fans.
Can carry out the iCAN network communication between each child node of supervisory system and the host node, child node can detect the voltage of 18 electric capacity, detects voltage range 0-5V, error＜10mV;
Each supervisory system child node all has 1 tunnel temperature input to be used to detect the capacitive surface temperature, and scope 0-100 ℃, error＜1 ℃.
Supervisory system power supply parameter: DC24V, 2A.
The supervisory system host node is controller with LPC2368.LPC2368 uses high performance 32 ARM7 kernels, can operate under the frequency up to 72MHz.LPC2368 contains the on-chip SRAM storer up to Flash and 58KB in the sheet of 512KB, comprises 1 10/100Ethernet MAC interface, 1 USB 2.0 full speed (12Mbps) equipment, 2 road CAN 2.0B passages, 1 general dma controller, 1 10 A/D converter and 1 10 D/A converter.
The peripheral module of supervisory system host node comprises: total voltage detection module, total current detection module, output relay module, power isolation module etc.Two road CAN interface module LPC2368 are built-in, realize iCAN, the J1939 communication.The technical program is utilized the IAP function of LPC2368, and configuration parameter is kept in the sheet among the Flash.
Detecting child node is controller with LPC2119, built-in CAN interface module.Peripheral module comprises: temperature-measuring module, voltage measurement module.
To contact each batteries terminal voltage of electric capacity of the voltage measurement module of LPC2119 is introduced bleeder circuit respectively through analog switch and is handled, send into the differential input end of ADC again after voltage follower carries out impedance conversion, the PI mouth of single-chip microcomputer is arrived in the voltage digital amount output after the conversion after isolating.
The DS18S20 series single wire digital thermometer that the temperature-measuring module temperature-measuring module adopts U.S. DALLAS company to release only needs a lead just single-chip microcomputer and DS18S20 can be coupled together.For making full use of the interface resource of LPC2119, all adopt series interface part, so just reduced the circuit volume, reduced the hardware cost of circuit.
Capacitor monitoring system often is subjected to various electromagnetic interference (EMI) as the part of car load.Its actual working environment is more abominable, is necessary to take on hardware design certain interference protection measure.
1, suppresses interference source.When IGBT on the electric automobile in the motor device and power diode work, very strong electromagnetic interference (EMI) can be produced, shielding should be strengthened.
2, isolate power supply.Adopt some DC/DC conversion modules in the design of capacitor monitoring system, stable insulating power supply is provided, different sub-systems is powered respectively, can eliminate the interference that power supply disturbs and produces altogether effectively.
3, photoelectricity is isolated.In the design of capacitor monitoring system, adopt photoelectrical coupler that external communication interface (CAN communication, RS232 communication) is kept apart the electromagnetic interference (EMI) that stops the circuit coupling to produce with the innernal CPU circuit.
Described in this instructions is a kind of preferred embodiment of the present invention, and above embodiment is only in order to illustrate technical scheme of the present invention but not limitation of the present invention.All those skilled in the art all should be within the scope of the present invention under this invention's idea by the available technical scheme of logical analysis, reasoning, or a limited experiment.
Claims (4)
1, a kind of distributed super-capacitor monitoring system based on the iCAN agreement is characterized in that: comprise supervisory system host node, capacitance detecting child node, liquid crystal display diagnostic equipment and CAN bus network;
The supervisory system host node has respectively and is connected with each capacitance detecting child node, and is connected with the instrument system of vehicle by the CAN bus that meets the SAEJ1939 agreement.
The supervisory system host node has total current and measures interface and total voltage measurement interface, connects current sensor and voltage sensor respectively, detects the total current and the total voltage of bank of super capacitors;
The supervisory system host node connects the liquid crystal display diagnostic equipment;
Each child node detects the voltage of each super capacitor respectively; And be connected with the temperature sensor of each electric capacity, to detect the capacitive surface temperature;
Each child node and host node carry out the iCAN network communication.
2, the distributed super-capacitor monitoring system based on the iCAN agreement according to claim 1, it is characterized in that: the supervisory system host node also can have relay interface, is connected with blower fan.
3, the distributed super-capacitor monitoring system based on the iCAN agreement according to claim 2, it is characterized in that: the supervisory system host node is controller with LPC2368, and the peripheral module of supervisory system host node comprises: total voltage detection module, total current detection module, output relay module, power isolation module; The supervisory system host node has two-way CAN interface, and one the tunnel connects the J1939 agreement, and one the tunnel connects the iCAN agreement.
4, the distributed super-capacitor monitoring system based on the iCAN agreement according to claim 3 is characterized in that: detecting child node is controller with LPC2119, built-in CAN interface module; Peripheral module comprises: temperature-measuring module, voltage measurement module.
To contact each batteries terminal voltage of electric capacity of the voltage measurement module that detects child node is introduced bleeder circuit respectively through analog switch and is handled, send into the differential input end of ADC (analog to digital converter) again after voltage follower carries out impedance conversion, the PI mouth of LPC2119 controller is arrived in the voltage digital amount output after the conversion after isolating;
The DS18S20 series single wire digital thermometer that the temperature-measuring module temperature-measuring module adopts U.S. DALLAS company to release; Adopt series interface part to be connected with the interface of LPC2119.
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2009100571191A CN101576589A (en) | 2009-04-24 | 2009-04-24 | Distributed super-capacitor monitoring system based on iCAN protocol |
| US12/644,535 US8564253B2 (en) | 2009-04-24 | 2009-12-22 | City electric bus powered by ultracapacitors |
| US12/644,485 US20100270859A1 (en) | 2009-04-24 | 2009-12-22 | Distributed Ultracapacitor Monitoring System Based on iCAN Protocol |
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| CNA2009100571191A CN101576589A (en) | 2009-04-24 | 2009-04-24 | Distributed super-capacitor monitoring system based on iCAN protocol |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102025545A (en) * | 2010-12-16 | 2011-04-20 | 上海电器科学研究院 | Control system for CANopen network |
| CN102692907A (en) * | 2012-06-04 | 2012-09-26 | 南京博时上辉电子科技有限公司 | Super capacitor CAN (controller area network) electric modular integrated system |
| CN103063326A (en) * | 2011-09-21 | 2013-04-24 | 中兴通讯股份有限公司 | Method for measuring temperature of electrolytic capacitor and system thereof |
| CN103630773A (en) * | 2013-11-13 | 2014-03-12 | 凯迈(洛阳)电子有限公司 | Monitoring device of super-capacitor management system |
| CN103956791A (en) * | 2014-05-05 | 2014-07-30 | 中国矿业大学 | Super-capacitor charging main monitoring system |
| CN104166052A (en) * | 2014-08-04 | 2014-11-26 | 国家电网公司 | Method for detecting super capacitor capacitance value of wind turbine generator pitch system |
| CN105334395A (en) * | 2015-08-14 | 2016-02-17 | 天津市三源电力设备制造有限公司 | Simple super-capacitor capacity measurement circuit |
| CN107861002A (en) * | 2017-11-03 | 2018-03-30 | 中国科学院电工研究所无锡分所 | A kind of super-capacitor voltage detecting system |
| CN108597888A (en) * | 2015-11-19 | 2018-09-28 | 福建省福工动力技术有限公司 | Super capacitor monitoring system based on CAN bus communication convenient to overhaul |
| CN109145336A (en) * | 2017-06-28 | 2019-01-04 | 中国航发贵阳发动机设计研究所 | A kind of topology design method of aeroplane engine electric cable general pipeline |
| CN110208619A (en) * | 2019-06-04 | 2019-09-06 | 龙源（北京）风电工程技术有限公司 | Wind power plant super capacitor life estimation method for variable pitch and its system and Wind turbines |
| CN111934964A (en) * | 2020-07-14 | 2020-11-13 | 南通西塔自动化科技有限公司 | Method and system for realizing single-bus local area network communication based on PWM |
| CN112887443A (en) * | 2021-01-15 | 2021-06-01 | 上海钧正网络科技有限公司 | CAN bus node ID distribution method and CAN bus system |
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2009
- 2009-04-24 CN CNA2009100571191A patent/CN101576589A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102025545A (en) * | 2010-12-16 | 2011-04-20 | 上海电器科学研究院 | Control system for CANopen network |
| CN102025545B (en) * | 2010-12-16 | 2012-11-07 | 上海电器科学研究院 | Control system for CANopen network |
| CN103063326A (en) * | 2011-09-21 | 2013-04-24 | 中兴通讯股份有限公司 | Method for measuring temperature of electrolytic capacitor and system thereof |
| CN103063326B (en) * | 2011-09-21 | 2017-03-15 | 中兴通讯股份有限公司 | A kind of method and system of measurement electrolysis condenser temperature |
| CN102692907A (en) * | 2012-06-04 | 2012-09-26 | 南京博时上辉电子科技有限公司 | Super capacitor CAN (controller area network) electric modular integrated system |
| CN103630773A (en) * | 2013-11-13 | 2014-03-12 | 凯迈(洛阳)电子有限公司 | Monitoring device of super-capacitor management system |
| CN103956791B (en) * | 2014-05-05 | 2016-06-29 | 中国矿业大学 | A kind of super capacitor charging monitoring and controlling system |
| CN103956791A (en) * | 2014-05-05 | 2014-07-30 | 中国矿业大学 | Super-capacitor charging main monitoring system |
| CN104166052A (en) * | 2014-08-04 | 2014-11-26 | 国家电网公司 | Method for detecting super capacitor capacitance value of wind turbine generator pitch system |
| CN105334395A (en) * | 2015-08-14 | 2016-02-17 | 天津市三源电力设备制造有限公司 | Simple super-capacitor capacity measurement circuit |
| CN108597888A (en) * | 2015-11-19 | 2018-09-28 | 福建省福工动力技术有限公司 | Super capacitor monitoring system based on CAN bus communication convenient to overhaul |
| CN108597888B (en) * | 2015-11-19 | 2019-12-10 | 福建省福工动力技术有限公司 | Super capacitor monitoring system based on CAN bus communication and convenient to overhaul |
| CN109145336A (en) * | 2017-06-28 | 2019-01-04 | 中国航发贵阳发动机设计研究所 | A kind of topology design method of aeroplane engine electric cable general pipeline |
| CN107861002A (en) * | 2017-11-03 | 2018-03-30 | 中国科学院电工研究所无锡分所 | A kind of super-capacitor voltage detecting system |
| CN110208619A (en) * | 2019-06-04 | 2019-09-06 | 龙源（北京）风电工程技术有限公司 | Wind power plant super capacitor life estimation method for variable pitch and its system and Wind turbines |
| CN110208619B (en) * | 2019-06-04 | 2021-03-09 | 龙源（北京）风电工程技术有限公司 | Super capacitor life estimation method for wind power plant pitch variation, system thereof and wind power generator set |
| CN111934964A (en) * | 2020-07-14 | 2020-11-13 | 南通西塔自动化科技有限公司 | Method and system for realizing single-bus local area network communication based on PWM |
| CN112887443A (en) * | 2021-01-15 | 2021-06-01 | 上海钧正网络科技有限公司 | CAN bus node ID distribution method and CAN bus system |
| CN112887443B (en) * | 2021-01-15 | 2022-11-18 | 上海钧正网络科技有限公司 | CAN bus node ID distribution method and CAN bus system |
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