CN208092204U - A kind of vehicle-mounted relay condition monitoring system - Google Patents
A kind of vehicle-mounted relay condition monitoring system Download PDFInfo
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- CN208092204U CN208092204U CN201820673650.6U CN201820673650U CN208092204U CN 208092204 U CN208092204 U CN 208092204U CN 201820673650 U CN201820673650 U CN 201820673650U CN 208092204 U CN208092204 U CN 208092204U
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Abstract
The utility model is related to a kind of vehicle-mounted relay condition monitoring systems, including：The order of the reception message from CAN bus is analyzed, and CAN bus order is executed based on message commands driving relay unit is received；The information of receiving relay operating status is fed back；And relay running state information is sent to CAN bus by timing；The infomational message of relay operating status is sent to instrumentation module by CAN bus.The relay status monitoring method and system of the utility model use the design of CAN bus, relay is driven to execute the corresponding command by receiving CAN bus order, and in relay operational process, by the running state information Real-time Feedback of relay to MCU, the operating status situation of relay is fed back to instrument board by MCU using CAN bus, so that user and maintenance personal grasp the operating status of relay at any time.Using the design of CAN bus, additionally it is possible to so that the numerous harness of central control box is optimized, and CAN bus has reliability outstanding, real-time and flexibility.
Description
Technical field
The utility model is related to vehicle-mounted relay field more particularly to a kind of vehicle-mounted relay condition monitoring systems.
Background technology
In the present of the traffic such as automobile, engineering truck, ship prosperity, central electric equipment control box has been widely used in garage
In industry.It is mounted with automobile distance light in existing vehicle central electric equipment control box, dipped beam, fog lamp, startup, plays the various control elements such as guarantor
Relay is required for drive.And the service life of relay depends on working environment and working condition.If using novel
CMOS tube drives relay, although Reliability comparotive is high, safeguards relatively troublesome.
Relay is widely used in as power-on and power-off control device in communication power supply, is equipped in engineering machinery a large amount of
Relay is operated in mostly in the environment such as greasy dirt, humidity, extreme temperature, sharp pounding, is accumulated by technology for many years
Tired, the design and use of many relays have large increase in engineering machinery, but in practical operation, find some relays
The situation of small probability failure can occur for device, so that some node in system also fails, these problems are for execute-in-place
Work is difficult to find in time, and many inconvenience is brought to maintenance work.
Therefore, for the ease of noting abnormalities in time when relay operating status is abnormal a little, there is an urgent need for one kind can be real
When control relay operating status method.
Utility model content
For the deficiency of the prior art, the utility model provides a kind of state monitoring method of vehicle-mounted relay and is
System, to which the abnormality of relay is fed back and be controlled into row information.The utility model connects CAN bus by MCU units,
Control command of the one side real-time reception from CAN bus, and analysis and Control order is ordered accordingly to drive relay to execute,
On the other hand, the operating status of relay is sent to by MCU units by relay signal feedback module in real time, MCU units are again
Relay running state data is sent to instrumentation module by CAN bus, so that instrumentation module is by the operating status of relay
Real-time Feedback is to user.User is allowed intuitively to observe the working condition of relay.And occur in relay operating status different
Chang Shi, instrumentation module send out instruction and alarm signal, allow user and maintenance personal to pinpoint the problems in time a little, also reduce and tie up after sale
The difficulty for repairing work, plays cost-effective, reduces the probability of happening of major accident.It is specific as follows：
A kind of vehicle-mounted relay state monitoring method provided by the utility model, the method includes:
Detect the reception message from CAN bus；
The order of the reception message from CAN bus is analyzed, and relay unit is driven based on message commands are received
Execute CAN bus order；
The information of receiving relay operating status is fed back；And relay running state information is sent to CAN bus by timing；
The infomational message of relay operating status is sent to instrumentation module by CAN bus.
According to a kind of preferred embodiment, wherein the step of information of receiving relay operating status feedback includes：
Whether the opened point of control relay is closed, and monitoring data are sent to relay signal feedback module；It is described
The operating status of relay is sent to MCU units by relay signal feedback module by the SPI interface with MCU unit communications.
According to a kind of preferred embodiment, wherein the step of reception message of the detection from CAN bus includes：
The information in CAN bus is monitored in real time and acquires valid data.
According to a kind of preferred embodiment, wherein the order of the reception message of the analysis from CAN bus, and
Include based on the step of message commands driving relay unit executes CAN bus order is received：
It is executed accordingly based on the input terminal of MCU cell signal trigger relay driving chips to control driving relay unit
Order.
According to a kind of preferred embodiment, the infomational message of relay operating status is sent to instrument by the CAN bus
The step of module further includes：
When relay operating status is abnormal, instruction and warning message are generated.
The utility model additionally provides a kind of vehicle-mounted relay condition monitoring system, vehicle-mounted relay status monitoring system
System for realizing the vehicle-mounted relay state monitoring method, the monitoring system include at least MCU units, CAN bus and
Relay unit, wherein MCU units are for connecting CAN bus and detecting the reception message from CAN bus；The MCU units
It is additionally operable to analyze the order of the reception message from CAN bus, and is held based on message commands driving relay unit is received
Row CAN bus order；And the information for receiving relay operating status is fed back；And periodically by relay running state information
It is sent to CAN bus.
According to a kind of preferred embodiment, the CAN bus is for the infomational message of relay operating status to be sent to
Instrumentation module；The instrumentation module generates instruction and warning message when relay operating status is abnormal.
According to a kind of preferred embodiment, the relay unit includes signal feedback module, the signal feedback module
Whether the opened point for control relay is closed, and monitoring data are sent to the detection of the relay signal feedback module
The input terminal of chip；The detection chip of signal feedback module is by the SPI interface with MCU unit communications by the operation shape of relay
State is sent to MCU units.
According to a kind of preferred embodiment, the MCU units include CPU module and driving output module, wherein described
CPU module is for the real-time information monitored in CAN bus and acquires valid data, and divides the valid data of acquisition
Analysis, and the order by driving output module that relay unit is driven to execute corresponding CAN bus；
According to a kind of preferred embodiment, the driving output module is used to send out MCU cell signals to relay unit
And the input terminal of trigger relay driving chip executes the corresponding command to control driving relay unit.
The advantageous effects of the utility model are：
The utility model by MCU units connect CAN bus, control command of the one side real-time reception from CAN bus,
And analysis and Control order is ordered accordingly to drive relay to execute, it is on the other hand, real-time by relay signal feedback module
The operating status of relay is sent to MCU units, MCU units are again sent relay running state data by CAN bus
To instrumentation module, so as to instrumentation module by the operating status Real-time Feedback of relay to user.Allow user intuitively observe after
The working condition of electric appliance.And when relay operating status occurs abnormal, instrumentation module sends out instruction and alarm signal, allows use
Family and maintenance personal pinpoint the problems a little in time, also reduce the difficulty of after-sales service work, play cost-effective, reduce great thing
Therefore probability of happening.In addition, the utility model uses the design of CAN bus, the numerous harness of central control box can be made to obtain
Optimization, and CAN bus has reliability outstanding, real-time and flexibility.
Description of the drawings
Fig. 1 is the schematic diagram of the vehicle-mounted relay condition monitoring system of the utility model；
Fig. 2 is the MCU electrical schematic diagrams of the central electrical part holder of the utility model；
Fig. 3 is the CAN bus electrical schematic diagram of the central electrical part holder of the utility model；
Fig. 4 is the relay signal feedback electrical schematic diagram of the central electrical part holder of the utility model；
Fig. 5 is the relay driving electrical principle of the central electrical part holder of the utility model；
Fig. 6 is the power sourced electric schematic diagram of the central electrical part holder of the utility model；
Fig. 7 is the monitoring method flow chart of the vehicle-mounted relay condition monitoring system of the utility model.
Reference numerals list
10-MCU units；11-CPU modules；12- signal feedback modules；13- drives output module；14-CAN buses；15-
Relay unit；16- reseting modules；17- power modules；18- instrumentation modules.
Specific implementation mode
It is described in detail below in conjunction with the accompanying drawings.
Embodiment 1
The vehicle-mounted relay state monitoring method of the utility model is present embodiments provided, the method includes walking as follows
Suddenly：
Detect the reception message from CAN bus；
The order of the reception message from CAN bus is analyzed, and relay unit is driven based on message commands are received
Execute CAN bus order；
The information of receiving relay operating status is fed back；And relay running state information is sent to CAN bus by timing；
The infomational message of relay operating status is sent to instrumentation module by CAN bus.
Wherein, the step of information feedback of the receiving relay operating status includes：
Whether the opened point of control relay is closed, and monitoring data are sent to relay signal feedback module；It is described
The operating status of relay is sent to MCU units by relay signal feedback module by the SPI interface with MCU unit communications.
Wherein, the step of reception message detected from CAN bus includes：
The information in CAN bus is monitored in real time and acquires valid data.
Wherein, it is described analysis the reception message from CAN bus order, and based on receive message commands driving after
Electric appliance unit execute CAN bus order the step of include：
It is executed accordingly based on the input terminal of MCU cell signal trigger relay driving chips to control driving relay unit
Order.
The step of infomational message of relay operating status is sent to instrumentation module by the CAN bus further include：
When relay operating status is abnormal, instruction and warning message are generated.
The method for present embodiments providing the real-time control relay state operation of MCU system, passes through CAN bus real-time reception
CAN bus order, and CAN bus order is analyzed, CAN bus order is executed and relay is driven to run.Relay is transported
The information of row state feeds back to MCU system, again passes by CAN bus and the information of relay operating status is fed back to instrument mould
Block, so that user can understand, intuitively learn the state of operation relay.
Embodiment 2
A kind of vehicle-mounted relay condition monitoring system is present embodiments provided, the vehicle-mounted relay condition monitoring system is used
In realizing the vehicle-mounted relay state monitoring method, the monitoring system include at least MCU units 10, CAN bus 14 with
And relay unit 15.MCU units 10 are for connecting CAN bus 14 and detecting the reception message from CAN bus 14；It is described
MCU units 10 are additionally operable to analyze the order of the reception message from CAN bus 14, and based on receive message commands driving after
Electric appliance unit 15 executes CAN bus order；And the information for receiving relay operating status is fed back；And periodically by relay
Running state information is sent to CAN bus 14.Preferably, the CAN bus 14 is used for the information report of relay operating status
Text is sent to instrumentation module 18.The instrumentation module 18 generates instruction and alarm signal when relay operating status is abnormal
Breath.So that user and maintenance personal have found the exception of relay operating status in time.
The relay unit 15 includes signal feedback module 12, and the signal feedback module 12 is for control relay
Whether opened point is closed, and monitoring data are sent to the input terminal of the detection chip of the relay signal feedback module.Letter
The operating status of relay is sent to MCU by the detection chip of number feedback module 12 by the SPI interface communicated with MCU units 10
Unit 10.
Preferably, the MCU units 10 include CPU module 11 and driving output module 13, wherein the CPU module 11
For monitoring the information in CAN bus in real time and acquire valid data, and the valid data of acquisition are analyzed, and passed through
The driving driving relay unit of output module 13 executes the order of corresponding CAN bus.The driving output module 13 be used for
Relay unit 15 sends out the input terminal of MCU cell signals and trigger relay driving chip and is held to control driving relay unit
Row the corresponding command.
Preferably, the monitoring system of the utility model further includes power module 17 and reseting module 16, wherein power module
The CPU module is connected for providing electric current to circuit；The reseting module 16 be used for the system register of CPU module and
Message registration device is received to be initialized.
Embodiment 3
Present embodiments provide the circuit structure principle of the central electrical part holder of the utility model.
Fig. 2 has gone out the MCU electrical schematic diagrams of the central electrical part holder of the utility model, with reference to Fig. 2, the MCU of the utility model
Circuit uses 8 microcontroller MC9S08DZ60 of Freescale, the chip strong antijamming capability, ranging from -40 DEG C of adaptive temperature -
125℃.Wherein, crystal oscillating circuit X1 is 4M, that is, the microcontroller operating rate of the utility model is 4M per second.C105 is 20PF electricity
Hold, R101 is 10M resistance, and R105 is 10K resistance, and C108 is 0.1UF capacitances, and C101, C102, C103, C104 are 0.1UF filtering
Capacitance.The peripheral circuit of MCU includes crystal oscillation clock circuit, CAN bus communicating circuit, driving output circuit and relay status
Signal feedback circuit.PTE6 with the PTE7 pins of MCU connect two data connections of CAN bus circuit.The PTG0 of MCU and
PTG1 pins connect the data communication line of crystal oscillation clock circuit.
MCU after the power is turned on, detects the information in CAN bus in real time, after detecting valid data, is analyzed by the CPU of MCU,
It goes to execute the corresponding actuating of relay.And the feedback information timing of the actuating of relay is sent from MCU in CAN bus, makes vehicle
Instrument is capable of the working condition of real-time control relay.
Fig. 3 shows the CAN bus electrical schematic diagram of the central electrical part holder of the utility model, as shown in figure 3, the center
In the CAN bus circuit of control box, D2 is using A1040 as CAN communication chip；T1 is inductance, is filtered out dry in CAN bus
It disturbs；R102, R103 are the build-out resistors of CAN bus；C107 is the filter capacitor of A1040.MCU can be detected in CAN bus
Control information removes driving relay, the feedback information of relay can also be sent to CAN bus by MCU, vehicular meter is made to obtain
Take the working condition of relay.
Fig. 4 shows the relay signal feedback electrical schematic diagram of the central electrical part holder of the utility model, as shown in figure 4,
D6 uses detection chips of the MC33972 as relay feedback signal.The opened point that HIGH11 passes through sampling relay；By
RH111, RH112 divide the input terminal SP0 that MC33972 is given with CH111, CH112 filtering.HIGH12 is by sampling relay
Opened point；The input terminal SP1 of MC33972 is given with CH121, CH122 filtering by RH121, RH122 partial pressure.HIGH13 passes through
Sample the opened point of relay；The input terminal of MC33972 is given with CH131, CH132 filtering by RH131, RH132 partial pressure
SP2.The opened point that HIGH14 passes through sampling relay；It is given by RH141, RH142 partial pressure and CH141, CH142 filtering
The input terminal SP3 of MC33972.Similarly, the opened point that HIGH15 passes through sampling relay；By RH151, RH152 partial pressure with
CH151, CH152 filter the input terminal SP4 for giving MC33972.The opened point that HIGH16 passes through sampling relay；By RH161,
RH162 divides the input terminal SP5 that MC33972 is given with CH161, CH162 filtering.HIGH17 is by sampling the normally opened of relay
Point；The input terminal SP6 of MC33972 is given with CH171, CH172 filtering by RH171, RH172 partial pressure.HIGH18 passes through sampling
The opened point of relay；The input terminal SP7 of MC33972 is given with CH181, CH182 filtering by RH181, RH182 partial pressure.
Whether the opened point of detection relay is closed, and the input terminal of MC33972 is sent to by the partial pressure and filtering of circuit,
There is MC33972 SPI interface to be communicated with MCU, the working condition of relay is sent to MCU, MCU is fed back to by CAN bus
Vehicular meter, so as to more intuitively observe the working condition of relay.
Fig. 5 shows the relay driving electrical principle of the central electrical part holder of the utility model, as shown in figure 5, in described
In the driving circuit for entreating control box relay, D10 uses driving chips of the BTS7741 as relay；D101, D104 are used
Diode 4007 controls signal as the cathode of relay；The anode control of D102, D103 using diode 4007 as relay
Signal processed；The fly-wheel diode of D1, D2, D3 respectively as relay；K1, K2, K3 are relays.It is triggered by MCU signals
The input terminal ON/OFF of BTS7741 goes control relay, K1 to belong to the control of relay cathode, and K2 belongs to the control of relay anode,
K3 belongs to the control of relay positive and negative anodes.
Fig. 6 shows the power sourced electric schematic diagram of the central electrical part holder of the utility model, as shown in fig. 6, the center control
The power circuit of box processed, D1, D2, D3 be transient diode, Z1, Z2 be bidirectional protective TVS36V, C1, C2, C3, C4, C5, C6,
C7, C8, C9, C10 are filter capacitor, and FUSE is 5A protective tubes, and L1, L2 are inductance, and LM2576 is power supply chip, input voltage
BAT+ and BAT- is reversed in order to prevent plays a protective role by BAT+ and BAT-, D1, D2, the filtered input for giving LM2576
End forms BUCK type reduction voltage circuits, working frequency 52HZ by LM2576 and L2, D3, C7, C8, C9, and high conversion efficiency can protect
Output voltage 5V is demonstrate,proved, worst error is not more than 4%, maximum load current 3A.It is used for its inside chip.
Embodiment 4
Present embodiments provide the internal operation flow of the vehicle-mounted relay condition monitoring system of the utility model, such as Fig. 7
Shown, system brings into operation first, executes following steps successively：
101：System register initializes；
102：Message registration device is received to be initialized；
103：It detects CAN bus and receives message；
104：The order of CAN bus is analyzed,
105：Execute CAN bus order；
106：Drive relay；
107：Relay information is fed back：And
108：Send CAN bus message.
The relay status monitoring method and system of the utility model use the design of CAN bus, by monitoring in real time
The order of CAN bus is ordered accordingly to drive relay to execute, also, in relay operational process, by the fortune of relay
The operating status situation of relay is fed back to instrument board to MCU, MCU by row status information Real-time Feedback using CAN bus, with
Just user and maintenance personal grasp the operating status of relay at any time.Using the design of CAN bus, central control box can be made numerous
More harness are optimized, and CAN bus has reliability outstanding, real-time and flexibility.
It should be noted that above-mentioned specific embodiment is exemplary, those skilled in the art can be in the utility model
Various solutions are found out under the inspiration of disclosure, and these solutions also belong to the open scope of the utility model simultaneously
It falls within the scope of protection of the utility model.It will be understood by those skilled in the art that the utility model specification and its attached drawing
Be it is illustrative and not constitute limitations on claims.The scope of protection of the utility model is by claim and its equivalent
It limits.
Claims (5)
1. a kind of vehicle-mounted relay condition monitoring system, which is characterized in that the monitoring system includes at least MCU units（10）,
CAN bus（14）And relay unit（15）, wherein MCU units（10）For connecting CAN bus（14）And it detects and comes from
CAN bus（14）Reception message；The MCU units（10）It is additionally operable to analysis and comes from CAN bus（14）The reception message
Order, and based on receive message commands drive relay unit（15）Execute CAN bus order；And it is used for receiving relay
The information of operating status is fed back；And relay running state information is sent to CAN bus by timing（14）.
2. vehicle-mounted relay condition monitoring system according to claim 1, which is characterized in that the CAN bus（14）With
In the infomational message of relay operating status is sent to instrumentation module（18）；The instrumentation module（18）Shape is run in relay
When state is abnormal, instruction and warning message are generated.
3. vehicle-mounted relay condition monitoring system according to claim 2, which is characterized in that the relay unit（15）
Including signal feedback module（12）, the signal feedback module（12）Whether the opened point for control relay is closed, and will
Monitoring data are sent to the input terminal of the detection chip of the relay signal feedback module；Signal feedback module（12）Detection
Chip by with MCU units（10）The operating status of relay is sent to MCU units by the SPI interface of communication（10）.
4. vehicle-mounted relay condition monitoring system according to claim 3, which is characterized in that the MCU units（10）Packet
Include CPU module（11）With driving output module（13）, wherein the CPU module（11）For monitoring the letter in CAN bus in real time
Valid data are ceased and acquired, and the valid data of acquisition are analyzed, and by driving output module（13）Drive relay
Device unit executes the order of corresponding CAN bus.
5. vehicle-mounted relay condition monitoring system according to claim 4, which is characterized in that the driving output module
（13）For to relay unit（15）The input terminal of MCU cell signals and trigger relay driving chip is sent out to control driving
Relay unit executes the corresponding command.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820673650.6U CN208092204U (en) | 2018-05-08 | 2018-05-08 | A kind of vehicle-mounted relay condition monitoring system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820673650.6U CN208092204U (en) | 2018-05-08 | 2018-05-08 | A kind of vehicle-mounted relay condition monitoring system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114002591A (en) * | 2020-07-28 | 2022-02-01 | 株洲中车时代电气股份有限公司 | Locomotive servicing test switch detection method and device and related components |
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2018
- 2018-05-08 CN CN201820673650.6U patent/CN208092204U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114002591A (en) * | 2020-07-28 | 2022-02-01 | 株洲中车时代电气股份有限公司 | Locomotive servicing test switch detection method and device and related components |
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