CN204928863U - CAN bus platform monitored control system - Google Patents
CAN bus platform monitored control system Download PDFInfo
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- CN204928863U CN204928863U CN201520669088.6U CN201520669088U CN204928863U CN 204928863 U CN204928863 U CN 204928863U CN 201520669088 U CN201520669088 U CN 201520669088U CN 204928863 U CN204928863 U CN 204928863U
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Abstract
The utility model provides a CAN bus platform monitored control system, relates to a monitored control system, including monitor platform, CAN transceiver, a plurality of intelligent network node, monitor platform pass through the CAN transceiver respectively with a plurality of intelligent network nodal connection, wherein monitor platform includes controller, the power module who is connected with the controller respectively, JTAG emulation debugging interface circuit, reset circuit, CAN interface module, display, CAN interface module pass through the CAN transceiver respectively with a plurality of intelligent network nodal connection. The utility model discloses a controller can carry out data acquisition and processing to the parameter that each intelligent network node sent, monitors the running state of system to showing data, control information through the display, thereby can realizing effectively monitoring the CAN bus, its performance is good, and occupation space is little, the low power dissipation, and the framework is novel, and the application is wide, and the appearance is pleasing to the eye, easily uses widely.
Description
Technical field
The utility model relates to a kind of supervisory control system, particularly a kind of CAN platform monitoring system.
Background technology
CAN protocol has had the history of more than ten years, but it is still among improvement.For promoting the development of CAN and CAN protocol, within 1992, set up CiA(CANinAutomation in Europe).Under the effort of CiA is promoted, CAN technology is all widely used in Auto Electronic Controlled System, apparatus for controlling elevator, safety monitoring system, Medical Instruments, textile machine, Shipping etc.
CAN is still in starting point on world market.The advantage of CAN in networking and communication function and its high performance price ratio, determine it and all have broad application prospects in a lot of fields and development space.CAN technology is large-scale instrument and equipment system complex, provides a good solution to operations such as most information, process, control, outputs.Compared with other buses, CAN has very high cost performance and reliability, in CAN network any one node all can be used as host node on one's own initiative with other node switching data; The information frame of CAN network node can separate priority, and this provides conveniently to there being the control of requirement of real-time; The physical layer of CAN and data link layer have unique designing technique, and its performance in anti-interference and error detection etc. is greatly improved.The These characteristics of CAN becomes fieldbus first-selected in many field of industry detection.
Summary of the invention
The technical problems to be solved in the utility model is: provide a kind of CAN platform monitoring system realizing carrying out CAN effective monitoring.
The technical scheme solved the problems of the technologies described above is: a kind of CAN platform monitoring system, and comprise monitor supervision platform, CAN transceiver, multiple intelligent network nodes, described monitor supervision platform is connected with multiple intelligent network nodes respectively by CAN transceiver; Described monitor supervision platform comprises controller, power module, JTAG artificial debugging interface circuit, reset circuit, CAN interface module, display, and described controller is connected with power module, JTAG artificial debugging interface circuit, reset circuit, CAN interface module, display respectively; Described CAN interface module is connected with multiple intelligent network nodes respectively by described CAN transceiver.
Further technical scheme of the present utility model is: described multiple intelligent network nodes are each includes Node Controller, node CAN transceiver, observing and controlling interface, described Node Controller is connected with node CAN transceiver, observing and controlling interface respectively, and node CAN transceiver is connected with the CAN interface module of monitor supervision platform by described CAN transceiver.
Further technical scheme of the present utility model is: described controller, Node Controller all adopt the LPC2292 chip of ARM7 microprocessor.
Described power module adopts LM2575 switching power source chip.
Described reset circuit adopts SP708S reset chip.
Described display adopts the TFT-LCD display of MzT24.
Described monitor supervision platform also includes accumulator system, and this accumulator system is connected with controller.
Described monitor supervision platform also includes clock circuit, and this clock circuit is connected with controller.
Described monitor supervision platform also includes Ethernet interface, and this Ethernet interface is connected with controller.
Described monitor supervision platform also includes ADC interface, and this ADC interface is connected with controller respectively.
Owing to adopting said structure, the CAN platform monitoring system of the utility model compared with prior art, has following beneficial effect:
1. can realize carrying out effective monitoring to CAN:
Because the CAN platform monitoring system of the utility model comprises monitor supervision platform, CAN transceiver, multiple intelligent network nodes, wherein monitor supervision platform comprises controller, power module, JTAG artificial debugging interface circuit, reset circuit, CAN interface module, display, and described controller is connected with power module, JTAG artificial debugging interface circuit, reset circuit, CAN interface module, display respectively; CAN interface module is connected with multiple intelligent network nodes respectively by described CAN transceiver.Controller of the present utility model can carry out efficient Acquire and process to the parameters that each intelligent network nodes connected sends, and monitors, and data, control information are directly shown by display the running status of system.Therefore, the utility model can realize carrying out effective monitoring to CAN.
2. performance is good:
Because monitor supervision platform of the present utility model comprises controller, power module, JTAG artificial debugging interface circuit, reset circuit, CAN interface module and display, intelligent network nodes comprises Node Controller, node CAN transceiver, observing and controlling interface, its middle controller and Node Controller all adopt the LPC2292 chip of ARM7 microprocessor series as kernel control module, ARM7TDMI-S processor employs the structuring strategy that is called as the uniqueness of THUMB, it is highly suitable for those to limited memory system or the application of typical products in mass production needing higher generation code density.16 bit instruction length of THUMB instruction set make it can reach the density of standard A RM code twice, but still keep the advantage in most of performances of ARM.Have the strict application controlled can use 16 Thumb patterns that code size is decreased beyond 30% to code size, and property loss of energy is very little.Therefore, Performance Ratio of the present utility model is better.
3. take up room little, low in energy consumption, framework is novel:
Traditional intelligent network nodes is mainly with the single-chip microcomputer of 51 series as central processing unit, and using SJA1000 as CAN controller, it takes up room greatly, and power consumption is high, and the expansion of peripheral interface is subject to great limitation.And the intelligent network nodes of the application comprises Node Controller, node CAN transceiver, observing and controlling interface, wherein Node Controller all adopts the LPC2292 chip of ARM7 microprocessor series as control module, it takes up room little, low in energy consumption, the advantage having played ARM chip compared with limits, its framework is more novel.
4. application is wide:
Controller of the present utility model and Node Controller all adopt the LPC2292 chip of ARM7 microprocessor series as kernel control module, due to 144 pin encapsulation of this LPC2292 chip, extremely low power consumption, multiple 32 bit timing devices, 10,8 tunnel ADC, 2 road CAN, PWM passages and nearly 9 external interrupt, them are made to be specially adapted to automobile, Industry Control Application and medical system and fault-tolerant Maintenance bus.
5. good looking appearance, display are directly:
The display adopted due to the utility model is the TFT-LCD display of MzT24, and profile is not only attractive in appearance, and can display monitoring data preferably.
Below, be further described with the technical characteristic of execution mode to the CAN platform monitoring system of the utility model by reference to the accompanying drawings.
Accompanying drawing explanation
Fig. 1: the block diagram of system of the CAN platform monitoring system of the utility model,
Fig. 2: the composition frame chart of monitor supervision platform described in embodiment one.
Embodiment
A kind of CAN platform monitoring system, comprise monitor supervision platform, CAN transceiver, N number of intelligent network nodes, described monitor supervision platform is connected (block diagram of system is see Fig. 1) with multiple intelligent network nodes, terminal resistance respectively by CAN transceiver; Described monitor supervision platform comprises controller, power module, JTAG artificial debugging interface circuit, reset circuit, CAN interface module, display, accumulator system, clock circuit, Ethernet interface, ADC interface (composition frame chart is see Fig. 2), and described controller is connected with power module, JTAG artificial debugging interface circuit, reset circuit, CAN interface module, display, accumulator system, clock circuit, Ethernet interface, ADC interface respectively; Described CAN interface module is connected with multiple intelligent network nodes respectively by described CAN transceiver.
Described N number of intelligent network nodes is each includes Node Controller, node CAN transceiver, observing and controlling interface, described Node Controller is connected with node CAN transceiver, observing and controlling interface respectively, and node CAN transceiver is connected with the CAN interface module of monitor supervision platform by described CAN transceiver.
Above-mentioned controller, Node Controller all adopt the LPC2292 chip of ARM7 microprocessor.ARM7TDMI-S processor employs the structuring strategy that is called as the uniqueness of THUMB, and it is highly suitable for those to limited memory system or the application of typical products in mass production needing higher generation code density.16 bit instruction length of THUMB instruction set make it can reach the density of standard A RM code twice, but still keep the advantage in most of performances of ARM.Have the strict application controlled can use 16 Thumb patterns that code size is decreased beyond 30% to code size, and property loss of energy is very little.
Above-mentioned power module adopts LM2575 switching power source chip; Power-supply system provides energy as whole system, is the basis of whole system work.Power supply due to the I/O mouth of LPC2292 chip is 3.3V, and in kernel and sheet, peripheral hardware power supply is 1.8V, and system is 3.3V application system.And LM2575 switching power source chip is an integrated stable voltage circuit, its inside is integrated with a fixing oscillator, reduces the volume of fin, and inner also have perfect protective circuit, comprises current limit and Thermal shutdown circuit etc. thereof.Its pin function is as follows: VIN: non-voltage of voltage regulation input; OUTPUT: switching voltage exports, and connects inductance and fast recovery diode thereof; GND: common port; FEEDBACK: feedback input end; ON/OFF: control input end, when connecing common port, voltage stabilizing circuit work; When connecing high level, voltage stabilizing circuit stops.
JTAG artificial debugging interface: JTAG is a kind of international standard test protocol, is mainly used in chip testing, and nowadays most high-grade device all supports this quasi-protocol, as DSP, FPGA device etc.The jtag interface of standard is 4 lines: TMS, TCK, TD1, TD0, is respectively model selection, clock, data input and DOL Data Output Line.JTAG pinout: TCK: test clock inputs; TD1: test data inputs, data input JTAG mouth by TD1; TD0: test data exports, and data are exported from JTAG mouth by TD0; TMS: test pattern is selected, and TMS is used for arranging JTAG mouth and is in certain specific test pattern.TRST: test reset, input pin, Low level effective.
Reset circuit: first system itself needs to carry out reset operation and just can start working, and have reliable reset circuit support, for the problem such as program fleet or paralysis appears in anti-locking system, can by the circuit realiration reset circuit of Power Supply Monitoring and house dog.In systems in which, the user key-press reset function when electrification reset of the main completion system of reset circuit and system cloud gray model.The utility model adopts special SP708S reset chip, and SP708S reset chip belongs to microprocessor (up) monitoring device, can detect the working condition of power supply in up and digital system and battery, effectively can strengthen reliability and the operating efficiency of system.Hand-reset (/MR) input allows, and RESET can be triggered by external key, and switch can produce the RESET reset pulse of a minimum 140ms.The operating voltage of ARM kernel is lower.Res1 can ensure that voltage can also reliable reset lower than the working power of SP708S reset chip.
CAN interface module: the CAN controller that LPC2292 chip carries is connected with bus transceiver TJAl050, just can be connected in bus by intelligent monitor nodes, carry out bus communication operation.
Display adopts the TFT-LCD display of MzT24, because LPC2292 chip internal does not have lcd driver, so can only with the LCD display containing driver, by carrying out function amendment and initialization to lcd driver, make LPC2292 chip energy drived control MzT24, and display monitoring image.
Claims (10)
1. a CAN platform monitoring system, is characterized in that: comprise monitor supervision platform, CAN transceiver, multiple intelligent network nodes, described monitor supervision platform is connected with multiple intelligent network nodes respectively by CAN transceiver; Described monitor supervision platform comprises controller, power module, JTAG artificial debugging interface circuit, reset circuit, CAN interface module, display, and described controller is connected with power module, JTAG artificial debugging interface circuit, reset circuit, CAN interface module, display respectively; Described CAN interface module is connected with multiple intelligent network nodes respectively by described CAN transceiver.
2. CAN platform monitoring system according to claim 1, it is characterized in that: described multiple intelligent network nodes are each includes Node Controller, node CAN transceiver, observing and controlling interface, described Node Controller is connected with node CAN transceiver, observing and controlling interface respectively, and node CAN transceiver is connected with the CAN interface module of monitor supervision platform by described CAN transceiver.
3. CAN platform monitoring system according to claim 2, is characterized in that: described controller, Node Controller all adopt the LPC2292 chip of ARM7 microprocessor.
4. CAN platform monitoring system according to claim 1, is characterized in that: described power module adopts LM2575 switching power source chip.
5. CAN platform monitoring system according to claim 1, is characterized in that: described reset circuit adopts SP708S reset chip.
6. CAN platform monitoring system according to claim 1, is characterized in that: described display adopts the TFT-LCD display of MzT24.
7. CAN platform monitoring system according to claim 1, it is characterized in that: described monitor supervision platform also includes accumulator system, this accumulator system is connected with controller.
8. CAN platform monitoring system according to claim 1, it is characterized in that: described monitor supervision platform also includes clock circuit, this clock circuit is connected with controller.
9. CAN platform monitoring system according to claim 1, it is characterized in that: described monitor supervision platform also includes Ethernet interface, this Ethernet interface is connected with controller.
10. the CAN platform monitoring system according to the arbitrary claim of claim 1 to 9, is characterized in that: described monitor supervision platform also includes ADC interface, this ADC interface is connected with controller respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520669088.6U CN204928863U (en) | 2015-08-31 | 2015-08-31 | CAN bus platform monitored control system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520669088.6U CN204928863U (en) | 2015-08-31 | 2015-08-31 | CAN bus platform monitored control system |
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| CN204928863U true CN204928863U (en) | 2015-12-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112260894A (en) * | 2020-10-16 | 2021-01-22 | 北京航天发射技术研究所 | CAN bus network system performance test platform and use method |
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2015
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112260894A (en) * | 2020-10-16 | 2021-01-22 | 北京航天发射技术研究所 | CAN bus network system performance test platform and use method |
| CN112260894B (en) * | 2020-10-16 | 2022-05-10 | 北京航天发射技术研究所 | CAN bus network system performance test platform and use method |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151230 Termination date: 20180831 |