CN102381263A - Power distribution controller based on CAN (controller area network) bus - Google Patents
Power distribution controller based on CAN (controller area network) bus Download PDFInfo
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- CN102381263A CN102381263A CN2011102800915A CN201110280091A CN102381263A CN 102381263 A CN102381263 A CN 102381263A CN 2011102800915 A CN2011102800915 A CN 2011102800915A CN 201110280091 A CN201110280091 A CN 201110280091A CN 102381263 A CN102381263 A CN 102381263A
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Abstract
The invention provides a power distribution controller based on a CAN (controller area network) bus, which comprises a CAN module, a relay driving circuit, a relay and a parameter measuring module. CAN bus technology is adopted, the power distribution controller is used as a node on the CAN bus, the power distribution controller and ground power distribution measurement and control equipment cooperate to receive power distribution control instructions and realize various power distribution control functions, system composition is simplified, and control reliability is improved. Simultaneously, voltage outputted by the relay and current consumed by external electric equipment are measured regularly and transmitted to the ground via the CAN bus by the power distribution controller so as to be monitored by a ground control station in real time, more visual monitoring of the power consumption state of a system is realized, and power distribution reliability is enhanced.
Description
Technical field
The present invention relates to a kind of distribution controller based on the CAN bus, particularly a kind of distribution controller based on the CAN bussing technique belongs to confession distribution field of measuring technique.
Background technology
On the carrier rocket because the powering order of supplying power on surface power supply and the arrow is any, do not allow to occur instant power-down.Existing distribution controller adopts the mode of direct control relay; Relay control line in the distributor leads to ground and controls; Distributor and external control wiring are more, and the distribution controller of traditional approach does not have the measuring ability of self output parameter in addition.
The CAN bus has extensively in auto-industry as a kind of bus data signalling methods to be quoted, and uses CAN to connect control unit of engine, sensor, anti-brake system or the like, and its speed of transmission can reach 1Mbit/s.Simultaneously, can CAN be installed in the electronic control system of truck body,, in order to replacing the wiring electrical power wiring assembly, but not see to have the CAN bussing technique is applied to distribution control technology field such as car light group, electric vehicle window or the like.
Summary of the invention
Technology of the present invention is dealt with problems and is: the deficiency that overcomes prior art; A kind of distribution controller based on the CAN bus is provided, and the present invention is as a node on the CAN bus, thereby has simplified system's formation; And have automatic measuring ability, improved the distribution reliability.
Technical solution of the present invention is: a kind of distribution controller based on the CAN bus; Comprise CAN module, relay drive circuit, relay and parameter measurement module; The CAN module receives the distribution instruction of CAN bus transmission and voltage, the current signal that distribution controller self is exported outwards sends through the CAN bus; The CAN module drives relay through relay drive circuit and carries out the distribution action; Relay drive circuit is carried out the distribution instruction control relay of CAN module output and is carried out the distribution action, and the parameter measurement module is gathered voltage and the external electric equipment consumed current of relay output and exported voltage, current signal to the CAN module;
The CAN module comprises micro controller system, A/D sampling module, CAN bus controller, photoelectrical coupler and CAN bus interface module; The differential signal that the CAN bus is sent converts level signal to by the CAN bus interface module; Level signal resolves to the CAN Frame by the CAN bus controller and is sent to micro controller system after photoelectric coupler isolation; Micro controller system extracts the distribution instruction in the CAN Frame and is sent to relay drive circuit and carries out; The A/D sampling module converts voltage, the current signal of parameter measurement module samples to digital signal and is sent to micro controller system and is forwarded to the CAN bus controller by micro controller system; The CAN bus controller is packaged into the CAN Frame with voltage, the current digital signal of sampling, and the CAN Frame that packing forms converts differential signal to by the CAN bus interface module and is sent to the CAN bus after photoelectric coupler isolation.
Described relay drive circuit is formed by sealing in and going out chip, phase inverter, photoelectrical coupler, first resistance, second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, first diode, second diode, limiter diode, first Darlington driving array and second Darlington driving array; Seal in and go out chip, phase inverter, photoelectrical coupler, first resistance, second resistance, the 3rd resistance, the 4th resistance, first diode and first Darlington driving array and constitute automatic driving access; The 5th resistance, second diode, limiter diode and second Darlington drive array and constitute the manual actuation path; String and conversion chip are connected on the input end of micro controller system output pin and phase inverter in the automatic driving access; The mouth of phase inverter and first resistance are connected on the input two ends of photoelectrical coupler respectively; A mouth power connection anode of photoelectrical coupler; The dividing potential drop current-limiting circuit that another mouth of photoelectrical coupler constitutes via second resistance, the 3rd resistance, the 4th resistance is connected on the anode of first diode; The negative terminal of first diode is connected on the input end that first Darlington drives array, and first Darlington drives the output relay termination of array; The negative terminal of limiter diode catcher dynamic control signal in the manual actuation path; The anode of limiter diode connects the anode of second diode through the 5th resistance; The negative terminal of second diode connects the input end that second Darlington drives array, and second Darlington drives the output relay termination of array.
The present invention's beneficial effect compared with prior art: the present invention adopts the CAN bussing technique; With distribution controller as a node on the CAN bus; Cooperate reception distribution control command with ground distribution testing control equipment; Accomplish various distribution controllable function, simplified system's formation, improved control reliability.Simultaneously; The present invention will regularly record voltage and the external electric equipment consumed current of relay output and through reaching ground under the CAN bus; Monitor in real time for ground control cabinet, the power consumption state of system has been had monitoring more intuitively, improved the distribution reliability.
Description of drawings
Fig. 1 is a structured flowchart of the present invention;
Fig. 2 is the fundamental diagram of relay drive circuit of the present invention.
The specific embodiment
The present invention as a node on the CAN bus, cooperates distribution controller with the ground power supply and distribution measuring and controlling equipment, receive the surface power supply control command through the CAN bus, accomplishes the various power supply controllable function to measuring system equipment.The power supply powering order is any on surface power supply and the arrow, does not allow to occur instant power-down.Under the ground deposition attitude, the powering order of each equipment is any.The present invention accepts that manual control command realizes supplying uniformly, unified arrow supplies (commentariess on classics), unified disconnected this three important control of arrow confession to move.Manually the unified distributing function that supplies of whole rocket can be independently accomplished in control, guarantees that CAN bus control fault does not influence the realization of system's distributing function.Distributor of the present invention regularly records consumer voltage, electric current and through reaching ground under the CAN bus, shows in real time for monitoring system.
As shown in Figure 1; The present invention includes CAN module, relay drive circuit, relay and parameter measurement module; The CAN module receives the distribution instruction of CAN bus transmission and voltage, the current signal that distribution controller self is exported outwards sends through the CAN bus; The CAN module drives relay through relay drive circuit and carries out the distribution action; Relay drive circuit is carried out the distribution instruction control relay of CAN module output and is carried out the distribution action, the parameter measurement module gather voltage and the external electric equipment consumed current of relay output and with the voltage and current signal output to the CAN module;
The CAN module comprises micro controller system, A/D sampling module, CAN bus controller, photoelectrical coupler and CAN bus interface module; The differential signal that the CAN bus is sent converts level signal to by the CAN bus interface module; Level signal resolves to the CAN Frame by the CAN bus controller and is sent to micro controller system after photoelectric coupler isolation; Micro controller system extracts the distribution instruction in the CAN Frame and is sent to relay drive circuit and carries out; The A/D sampling module converts voltage, the current signal of parameter measurement module samples to digital signal and is sent to micro controller system and is forwarded to the CAN bus controller by micro controller system; The CAN bus controller is packaged into the CAN Frame with voltage, the current digital signal of sampling, and the CAN Frame that packing forms converts differential signal to by the CAN bus interface module and is sent to the CAN bus after photoelectric coupler isolation.
Wherein micro controller system adopts C8051F040 type micro controller system, the inner integrated CAN bus controller of micro controller system, and photoelectrical coupler adopts 6N137 type photoelectrical coupler, and the CAN bus interface module adopts the TJA1040T interface chip.Micro controller system internal circuit and CAN bus interface module adopt high-speed photoelectric coupler to isolate, and reduce bus and disturb the influence to other circuit of device interior, adopt the PHILIPS high-speed photoelectric coupler 6N137 of company.
As shown in Figure 2; Relay drive circuit among the present invention is formed by sealing in and going out chip, phase inverter, photoelectrical coupler, first resistance, second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, first diode, second diode, limiter diode, first Darlington driving array and second Darlington driving array; Seal in and go out chip, phase inverter, photoelectrical coupler, first resistance, second resistance, the 3rd resistance, the 4th resistance, first diode and first Darlington driving array and constitute automatic driving access; The 5th resistance, second diode, limiter diode and second Darlington drive array and constitute the manual actuation path; String and conversion chip are connected on the input end of micro controller system output pin and phase inverter in the automatic driving access; The mouth of phase inverter and first resistance are connected on the input two ends of photoelectrical coupler respectively; A mouth power connection anode of photoelectrical coupler; The dividing potential drop current-limiting circuit that another mouth of photoelectrical coupler constitutes via second resistance, the 3rd resistance, the 4th resistance is connected on the anode of first diode; The negative terminal of first diode is connected on the input end that first Darlington drives array, and first Darlington drives the output relay termination of array; The negative terminal of limiter diode catcher dynamic control signal in the manual actuation path; The anode of limiter diode connects the anode of second diode through the 5th resistance; The negative terminal of second diode connects the input end that second Darlington drives array, and second Darlington drives the output relay termination of array.
Wherein seal in and go out chip and adopt SN54HC595 to seal in and go out chip (hereinafter to be referred as 595 chips); Under the micro controller system automatic control mode; Single-chip Controlling SN54HC595 seals in and goes out chip (hereinafter to be referred as 595 chips), 595 chip drives subsequent conditioning circuits, and then control relay.In Single-chip Controlling 595 chips, 595_SER, 595_CLK, 595_HOLD are single-chip processor i/o mouth line, and Relay1～8 are mouth, can control 8 relays respectively, in native system, only use Relay5～8 to control 4 group relaies.Because 595 chips are chips of serial input and line output; Each output needs 8 SRCLK pulses, and has latch function, so; With respect to mode with the direct output control relay of micro controller system mouth line, the raising system reliability that this kind mode can be to a certain degree.Under automatic control mode, when signal was high level, the photoelectrical coupler input end did not constitute the loop, and photoelectrical coupler is failure to actuate, and it is 0 that first Darlington drives the array input terminal voltage, and Darlington drives not conducting of array, and relay is failure to actuate; When being low level, the photoelectrical coupler input end constitutes the loop, has electric current to pass through in the light-emitting diode; Thereby photoelectrical coupler action; First Darlington drives the array input end and reaches the voltage that makes its conducting, and the relay control under the automatic control mode is accomplished in the actuating of relay.The first resistance R 1=330 Europe, the second resistance R 2=10k, the 3rd resistance R 3=5.1k, the 4th resistance R 4=5.1k, the 5th resistance R 5=10k.
Under manual master mode, when signal was effective, second Darlington drove the array conducting, thereby the actuating of relay adopts the voltage stabilizing limiter diode to reduce the input voltage of second Darlington transistor when manually controlling.Manual control and automatic guidance adopt two Darlingtons driving arrays driving relays respectively, cut off automatic and manual influencing each other of controlling through two diodes.
The parameter measurement module comprises voltage measurement and current measurement two parts.The scope of voltage measurement is 25V～31V, and rated voltage is 28V, adopts the collection of independent A/D acquisition chip.Current detecting adopts Hall current sensor; It is the equipment that current parameters is carried out measurement of inductance through the Hall effect principle; Principal feature is and measuring object direct contact not; Belong to the current sensor that electricity is isolated, and have the survey precision height, characteristics such as reliability is high, volume is little, light weight.Specified 0～the 5V that is output as of this sensor measurement signal can directly be connected to the A/D acquisition chip and carry out analogue to digital conversion; And the mouth of this sensor has been taked the amplitude limit measure, guaranteed the output voltage of sensor under failure condition-0.8V～+ 6V between, be unlikely to damage the analogue to digital conversion equipment of rear end.
With concrete example the present invention is done detailed description below:
Surface power supply control: under the normal condition, micro controller system receives the instruction of ground control cabinet ground power supply and distribution through the CAN bus, and the ground of the random order of relay control video equipment, emitter, pulse reply machine supplies to power up and cut off the power supply.Under the emergency state, through the switch of confession uniformly (28V+ signal) of ground control cabinet, control three actuatings of relay, make video equipment, emitter, the unification of pulse reply machine by surface power supply or outage.
Ground is to changeing electric control on the arrow: under the normal condition, micro controller system receives ground control cabinet through the CAN bus changes the electricity instruction, and electrical relay is changeed in control, realizes that the arrow of video equipment, emitter, pulse reply machine supplies to power up.This part has the design of relay stick circuit, and after the relay adhesive, micro controller system loses the control to this relay, can improve the unfailing performance of equipment.Under the emergency state, through the unified arrow confession switch of ground control cabinet, the control relay action makes video equipment, emitter, pulse reply machine unify battery-powered;
SCM program design: distributor mainly is to receive from the distribution instruction of distribution testing control computing machine and respond, and simultaneously to CAN bus cycles property transmission voltage, electric current and bus state information, transmission cycle and system-frame cycle (25ms) are synchronously.Distributor receives the distribution instruction from the distribution testing control computing machine, if receive same distribution instruction greater than 4 times, distributor is carried out and is somebody's turn to do the instruction action; And " action command the sends " state that returns gives the distribution testing control computing machine, and bridging order ID is identical with this action command (from the distribution testing control computing machine) ID, is Frame; Data length is 1 byte; Numerical value is " receiving the number of times of this instruction ", sends interval 2ms between 2 times continuously 2 times.After this status information is received on ground, think that distributor instruction sent the line item of going forward side by side by CPU.This program mainly is to the C8051F040 micro controller system, adopts Keil C platform, programmes with the C language.Can be good at the requirement of the system that realizes.
The content of not doing to describe in detail in the specification sheets of the present invention belongs to this area professional and technical personnel's known technology.
Claims (2)
1. distribution controller based on the CAN bus; It is characterized in that: comprise CAN module, relay drive circuit, relay and parameter measurement module; The CAN module receives the distribution instruction of CAN bus transmission and voltage, the current signal that distribution controller self is exported outwards sends through the CAN bus; The CAN module drives relay through relay drive circuit and carries out the distribution action; Relay drive circuit is carried out the distribution instruction control relay of CAN module output and is carried out the distribution action, and the parameter measurement module is gathered voltage and the external electric equipment consumed current of relay output and exported voltage, current signal to the CAN module;
The CAN module comprises micro controller system, A/D sampling module, CAN bus controller, photoelectrical coupler and CAN bus interface module; The differential signal that the CAN bus is sent converts level signal to by the CAN bus interface module; Level signal resolves to the CAN Frame by the CAN bus controller and is sent to micro controller system after photoelectric coupler isolation; Micro controller system extracts the distribution instruction in the CAN Frame and is sent to relay drive circuit and carries out; The A/D sampling module converts voltage, the current signal of parameter measurement module samples to digital signal and is sent to micro controller system and is forwarded to the CAN bus controller by micro controller system; The CAN bus controller is packaged into the CAN Frame with voltage, the current digital signal of sampling, and the CAN Frame that packing forms converts differential signal to by the CAN bus interface module and is sent to the CAN bus after photoelectric coupler isolation.
2. a kind of distribution controller according to claim 1 based on the CAN bus; It is characterized in that: described relay drive circuit is formed by sealing in and going out chip, phase inverter, photoelectrical coupler, first resistance, second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, first diode, second diode, limiter diode, first Darlington driving array and second Darlington driving array; Seal in and go out chip, phase inverter, photoelectrical coupler, first resistance, second resistance, the 3rd resistance, the 4th resistance, first diode and first Darlington driving array and constitute automatic driving access; The 5th resistance, second diode, limiter diode and second Darlington drive array and constitute the manual actuation path; String and conversion chip are connected on the input end of micro controller system output pin and phase inverter in the automatic driving access; The mouth of phase inverter and first resistance are connected on the input two ends of photoelectrical coupler respectively; A mouth power connection anode of photoelectrical coupler; The dividing potential drop current-limiting circuit that another mouth of photoelectrical coupler constitutes via second resistance, the 3rd resistance, the 4th resistance is connected on the anode of first diode; The negative terminal of first diode is connected on the input end that first Darlington drives array, and first Darlington drives the output relay termination of array; The negative terminal of limiter diode catcher dynamic control signal in the manual actuation path; The anode of limiter diode connects the anode of second diode through the 5th resistance; The negative terminal of second diode connects the input end that second Darlington drives array, and second Darlington drives the output relay termination of array.
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| CN201110280091.5A CN102381263B (en) | 2011-09-20 | 2011-09-20 | Power distribution controller based on CAN (controller area network) bus |
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| CN201110280091.5A CN102381263B (en) | 2011-09-20 | 2011-09-20 | Power distribution controller based on CAN (controller area network) bus |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104598339A (en) * | 2013-10-30 | 2015-05-06 | 北京航天斯达新技术装备公司 | Measurement system power supply and distribution equivalence device based on CAN (Controller Area Network) bus |
| CN105867222A (en) * | 2016-04-11 | 2016-08-17 | 国网宁夏电力公司检修公司 | Anti-interference output control circuit structure for transformer air-cooled intelligent control apparatus |
| CN107283752A (en) * | 2016-04-12 | 2017-10-24 | 深圳亿加智能***有限公司 | A kind of Multi-channel hot runner driving module, controller and control system |
| CN108363003A (en) * | 2018-05-08 | 2018-08-03 | 新乡市荣泰电器有限公司 | A kind of vehicle-mounted relay state monitoring method and system |
| CN108900079A (en) * | 2018-06-20 | 2018-11-27 | 湖南理工学院 | A kind of rapid transmission method of inverter and machine switching signal |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108363003A (en) * | 2018-05-08 | 2018-08-03 | 新乡市荣泰电器有限公司 | A kind of vehicle-mounted relay state monitoring method and system |
| CN108900079A (en) * | 2018-06-20 | 2018-11-27 | 湖南理工学院 | A kind of rapid transmission method of inverter and machine switching signal |
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| CN102381263B (en) | 2014-07-02 |
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