CN208459827U - A kind of overlength trackless bus high-voltaghe compartment and auxiliary converter cabinet monitor system - Google Patents
A kind of overlength trackless bus high-voltaghe compartment and auxiliary converter cabinet monitor system Download PDFInfo
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- CN208459827U CN208459827U CN201821320406.8U CN201821320406U CN208459827U CN 208459827 U CN208459827 U CN 208459827U CN 201821320406 U CN201821320406 U CN 201821320406U CN 208459827 U CN208459827 U CN 208459827U
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- auxiliary converter
- converter cabinet
- voltaghe compartment
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Abstract
The utility model provides a kind of overlength trackless bus high-voltaghe compartment and auxiliary converter cabinet monitoring system, the system includes main control chip and peripheral circuit engaged therewith, wherein, main control chip is ARM7 processor, it includes CAN bus transceiving chip, for receiving the CAN signal of car running computer sending, analyzes CAN signal, running information is read, and high-voltaghe compartment and auxiliary converter cabinet operation information are uploaded to car running computer by CAN bus.The monitoring system of the utility model by acquiring high-voltaghe compartment and auxiliary converter cabinet voltage, electric current, CAN signal etc. in real time, judge whether high-voltaghe compartment and auxiliary converter cabinet working condition are normal, and the state of high-voltaghe compartment and auxiliary converter cabinet is uploaded into car running computer by CAN bus.
Description
Technical field
The utility model relates to electrical monitoring technical fields, particularly, are related to a kind of overlength trackless bus high-voltaghe compartment and auxiliary
Converter cabinet is helped to monitor system.
Background technique
Under the vigorously supporting of national policy, the development of New energy electric bus is swift and violent, as new energy overlength trackless bus
Distribution system, DC24V, DC750V and three-phase AC380V performance of the output of high-voltaghe compartment and auxiliary converter cabinet directly determine newly
Whether stable operation seems particularly critical for the performance of energy overlength trackless bus, high-voltaghe compartment and auxiliary converter cabinet.
Utility model content
The utility model aim is to provide a kind of overlength trackless bus high-voltaghe compartment and auxiliary converter cabinet monitoring system, with solution
The certainly technical problems such as real-time monitoring of high-voltaghe compartment and auxiliary converter cabinet operating status.
The utility model provides a kind of overlength trackless bus high-voltaghe compartment and auxiliary converter cabinet monitoring system, including master control core
Piece and peripheral circuit engaged therewith, the main control chip are ARM7 processor comprising CAN bus transceiving chip is used for
The CAN signal that car running computer issues is received, CAN signal is analyzed, reads running information, and high-voltaghe compartment and auxiliary converter cabinet are run
Information is uploaded to car running computer by CAN bus；The peripheral circuit includes:
The CAN bus circuit of 2 road different frequencies；
Multiple sensor signal acquisition circuit is sent to master control core for acquiring plurality of voltages, electric current and temperature signal
Piece is monitored the working condition and coupled situation of high-voltaghe compartment and auxiliary converter cabinet；
Multichannel low-voltage relay signal output apparatus；
High voltage power supply acquisition process comparison circuit.
Preferably, the monitoring system includes multiple signal acquisition mouths and output control mouth, and the main control chip is ARM7
32-bit microprocessor, pin connection is as follows: reference voltage of the 6#VBAT pin as microprocessor, external reference circuit,
The reference circuit includes VDD power supply and B1 power supply (failure data protection power supply), and the two passes through diode D1 and two poles respectively
It is connected to 6#VBAT pin after pipe D2 is in parallel, is additionally provided with one on the connecting line of diode D1 and diode D2 and 6#VBAT pin
A branch, branch road are equipped with filter capacitor C2；8# pin and 9# pin meet external low frequency crystal oscillator U3, in microprocessor low-power consumption
With it is standby when work；#12 pin and #13 pin meet external high frequency crystal oscillator U5；Remaining pin outer signal acquisition port and output control
Donsole.
Preferably, the main control chip is based on C language compiler.
Preferably, the main control chip is additionally provided with USB interface, to carry out program upgrading and maintenance by flash disk.
Preferably, the CAN bus circuit is made of CAN transceiver and peripheral circuit engaged therewith, is passed for data
It is defeated and with car running computer communicate.
It is further preferred that the CAN bus circuit structure is as follows:
It receives pin CAN1-RX, send #70, #71 pin that pin CAN1-TX connects ARM7 processor respectively, and respectively
It is transmitted to transceiver U24 by resistance R45, resistance R44, during which passes through resistance R17 respectively, capacitor C9 is pulled up, or is passed through
Resistance R18, capacitor C10 are pulled up, and are enhanced signal strength, are communicated with car running computer, and data are transmitted；
Receive pin CAN2-RX, transmission pin CAN2-TX connects #51, #52 pin of ARM7 processor, and passes through respectively
Resistance R42, resistance R43 are transmitted to transceiver U23, during which pass through resistance R15 respectively, capacitor C7 is pulled up, or pass through resistance
R16, capacitor C8 are pulled up, and signal strength is enhanced, and are communicated with the peripheral circuit of other cooperation main control chips, transmit number
According to.
Preferably, the collecting sensor signal circuit from operational amplifier TLC2261AI, sampling resistor and with it
Peripheral circuit composition.
It is further preferred that the collecting sensor signal circuit includes several acquisition modules in parallel, each acquisition
Module is acquired by small resistance value sampling resistor, is then delivered to operational amplifier TLC2261AI and is carried out calculation process.
Preferably, the low-voltage relay signal output apparatus is made of driving chip and high-voltage relay, for driving
The high-power electric appliances such as protective relay.
It is further preferred that the low-voltage relay signal output apparatus includes two branches, it is respectively equipped with triode Q2
With diode D7, signal is controlled by resistance R65 and is sent to triode Q2, for controlling triode Q2 on-off, and then control relay
Device, diode D7 are freewheeling diode, are used for protective relay coil.
Preferably, the high voltage power supply acquisition process comparison circuit is by sampling resistor, operational amplifier and engaged therewith
Peripheral circuit composition, for parameters such as monitoring power voltages.
It is further preferred that the isolated power supply module is photoelectrical coupler.
It is further preferred that the high voltage power supply acquisition process comparison circuit principle is as follows: sampling resistor group believes high pressure
Number it is respectively sent to high_voltage isolation module U1 and high_voltage isolation module U8, they are respectively transmitted to corresponding operation by resistance and put
Operation is carried out in big device U6, and operation result is sent to the signal acquisition mouth of monitoring system.
Preferably, the peripheral circuit with main control chip cooperation further includes pulse-width modulation circuit (PWM), for controlling superpressure letter
Number, it prevents from interfering system overvoltage.
It is further preferred that 0~24V that the pulse-width modulation circuit is made of triode BCX55 and triode 2SC2412
Pulse-width modulation circuit.
Still more preferably, the pulse-width modulation circuit principle is as follows: control signal PWM2 is transmitted to by resistance R30
Triode Q2, for controlling triode Q2 on-off；The collector of triode Q2 is pulled up through resistance R15, enhances signal strength, signal
Collector, resistance R23 through triode Q2 are transmitted to triode Q1, control the output that its on-off realizes pulsewidth modulation.
A kind of corresponding overlength trackless bus high-voltaghe compartment of above system and auxiliary converter cabinet monitoring method, specific steps are such as
Under:
S1. after high-voltaghe compartment and auxiliary converter cabinet are powered, monitoring system obtains electric, beginning and car running computer progress CAN communication
" shaking hands " carries out data transmission after communication " shaking hands " success；
S2. multiple sensor signal acquisition circuit starts collection voltages, electric current and temperature signal, acquires by high voltage power supply
Main control chip is sent to after processing comparison circuit processing and carries out calculation processing, whole process is recorded, and by gained high-voltaghe compartment
And the working condition of auxiliary converter cabinet is sent to car running computer by CAN bus；
S3. judge whether the working condition of high-voltaghe compartment and auxiliary converter cabinet has exception, be to enter step S4, otherwise tie
Beam；
S4. main control chip carries out corresponding actions by multichannel low-voltage relay signal output apparatus, protects high-voltaghe compartment and auxiliary
Converter cabinet is helped, and car running computer is sent by CAN bus by this abnormal signal.
Preferably, in step S2, voltage, electric current and temperature signal are sent to main control chip after amplifier is handled.
The utility model has the following beneficial effects:
The monitoring system of the utility model by acquiring high-voltaghe compartment and auxiliary converter cabinet voltage, electric current, CAN signal in real time
Deng judging whether high-voltaghe compartment and auxiliary converter cabinet working condition are normal, and the state of high-voltaghe compartment and auxiliary converter cabinet is passed through CAN
Bus uploads to car running computer.In the monitoring system that existing AC and DC coexists, common monitoring mode can only be monitored
Combined-voltage numerical value, the quality and size of current of voltage unable to monitor, this system can monitor the voltage quality of alternating current-direct current,
Whether the numerical value of energy monitoring current meets demand for control, i.e. whether the product gesture of supply harmonic meets the requirements, and is high-voltaghe compartment and auxiliary
The normal operation of converter cabinet provides reliable guarantee.
The utility model can be to the out-put supply performance quality of high-voltaghe compartment and auxiliary converter cabinet, and the carry out such as operating status are real-time
The fault message of high-voltaghe compartment and auxiliary converter cabinet feedback to car running computer is guaranteed high pressure by modes such as CAN bus by monitoring
Case and auxiliary converter cabinet are run with optimum state.The utility model has many advantages, such as simple and compact for structure, good reliability, can guarantee
New energy overlength trackless bus operational excellence
In order to ensure that high-voltaghe compartment and auxiliary converter cabinet stable operation, this equipment are communicated with car running computer, real-time monitoring
The operating status of high-voltaghe compartment and auxiliary converter cabinet, DC power supply, AC power source and function including high-voltaghe compartment and auxiliary converter cabinet
Deng, and fault message and operating status are uploaded into car running computer.
The utility model uses patch type electronic component, low in energy consumption, small in size, high reliablity.By welding equipment,
Electronic component is integrated on pcb board, the integrality of assurance function.
Detailed description of the invention
The attached drawing constituted part of this application is used to provide a further understanding of the present invention, the utility model
Illustrative embodiments and their description are not constituteed improper limits to the present invention for explaining the utility model.In attached drawing
In:
Fig. 1 is the main control chip and peripheral circuit structural block diagram of the utility model；
Fig. 2 is the 2 road different frequency CAN bus circuit connection figures of the utility model；
Fig. 3 is collecting sensor signal circuit connection diagram；
Fig. 4 is low-voltage relay signal output apparatus connection figure；
Fig. 5 is high voltage power supply acquisition process comparison circuit connection figure；
Fig. 6 is pulse-width modulation circuit connection figure；
Fig. 7 is the software program figure of the utility model；
Other than objects, features and advantages described above, there are also other purposes, feature and excellent for the utility model
Point.Below with reference to figure, the utility model is described in further detail.
Specific embodiment
The embodiments of the present invention are described in detail below in conjunction with attached drawing, but the utility model can be according to power
Benefit requires to limit and the multitude of different ways of covering is implemented.
As shown in Figure 1 a kind of overlength trackless bus high-voltaghe compartment and auxiliary converter cabinet monitor system, including main control chip with
And peripheral circuit engaged therewith, main control chip are ARM7 processor comprising CAN bus transceiving chip, for receiving driving
The CAN signal that computer issues analyzes CAN signal, reads running information, and high-voltaghe compartment and auxiliary converter cabinet operation information are passed through
CAN bus is uploaded to car running computer；Peripheral circuit includes:
The CAN bus circuit of 2 road different frequencies；
Multiple sensor signal acquisition circuit is sent to master control core for acquiring plurality of voltages, electric current and temperature signal
Piece is monitored the working condition and coupled situation of high-voltaghe compartment and auxiliary converter cabinet；
Multichannel low-voltage relay signal output apparatus；
High voltage power supply acquisition process comparison circuit.
Wherein, monitoring system includes multiple signal acquisition mouths and output control mouth, and the main control chip is 32 of ARM7
Microprocessor, pin connection are as follows: reference voltage of the 6#VBAT pin as microprocessor, external reference circuit, the base
Quasi- circuit includes VDD power supply and B1 power supply (failure data protection power supply), and the two passes through diode D1 and diode D2 simultaneously respectively
It is connected to 6#VBAT pin after connection, is additionally provided with a branch on the connecting line of diode D1 and diode D2 and 6#VBAT pin
Road, branch road are equipped with filter capacitor C2；8# pin and 9# pin meet external low frequency crystal oscillator U3, microprocessor low-power consumption and to
It works when machine；#12 pin and #13 pin meet external high frequency crystal oscillator U5；Remaining pin outer signal acquisition port and output control mouth.
Main control chip is based on C language compiler, is specifically shown in Fig. 7.Main control chip is additionally provided with USB interface, to pass through flash disk
Carry out program upgrading and maintenance.
CAN bus circuit is made of high_voltage isolation device and CAN transceiver and peripheral circuit engaged therewith, is used for and row
Vehicle dataphone.CAN bus circuit structure (Fig. 2) is as follows:
It receives pin CAN1-RX, send #70, #71 pin that pin CAN1-TX connects ARM7 processor respectively, and respectively
It is transmitted to transceiver U24 by resistance R45, resistance R44, during which passes through resistance R17 respectively, capacitor C9 is pulled up, or is passed through
Resistance R18, capacitor C10 are pulled up, and are enhanced signal strength, are communicated with car running computer, and data are transmitted；
Receive pin CAN2-RX, transmission pin CAN2-TX connects #51, #52 pin of ARM7 processor, and passes through respectively
Resistance R42, resistance R43 are transmitted to transceiver U23, during which pass through resistance R15 respectively, capacitor C7 is pulled up, or pass through resistance
R16, capacitor C8 are pulled up, and signal strength is enhanced, and are communicated with the peripheral circuit of other cooperation main control chips, transmit number
According to.
Collecting sensor signal circuit is by operational amplifier TLC2261AI, sampling resistor and peripheral circuit engaged therewith
It forms (Fig. 3), collecting sensor signal circuit includes several acquisition modules in parallel, and each acquisition module is sampled by small resistance value
Resistance is acquired, and is then delivered to operational amplifier TLC2261AI and is carried out calculation process.
Low-voltage relay signal output apparatus is made of driving chip and high-voltage relay, for driving protective relay etc.
High-power electric appliance (Fig. 4), low-voltage relay signal output apparatus include two branches, are respectively equipped with triode Q2 and diode
D7 controls signal by resistance R65 and is sent to triode Q2, for controlling triode Q2 on-off, and then controls relay, diode
D7 is freewheeling diode, is used for protective relay coil.
High voltage power supply acquisition process comparison circuit is by sampling resistor, operational amplifier, triode and periphery engaged therewith
Circuit composition, for parameters such as monitoring power voltages.Isolated power supply module is photoelectrical coupler (Fig. 5), at high voltage power supply acquisition
It is as follows to manage comparison circuit principle: high-voltage signal is respectively sent to high_voltage isolation module U1 and high_voltage isolation module by sampling resistor group
U8, they are respectively transmitted to carry out operation in corresponding operational amplifier U6 by resistance, and operation result is sent to monitoring
The signal acquisition mouth of system.
Peripheral circuit with main control chip cooperation further includes that pulse-width modulation circuit (PWM) is prevented for controlling superpressure signal
System overvoltage is interfered.0~24V pulse-width modulation circuit that pulse-width modulation circuit is made of triode BCX55 and triode 2412
(Fig. 6), pulse-width modulation circuit principle are as follows: control signal PWM2 is transmitted to triode Q2 by resistance R30, for controlling three poles
Pipe Q2 on-off；The collector of triode Q2 is pulled up through resistance R15, enhances signal strength, collector, electricity of the signal through triode Q2
Resistance R23 is transmitted to triode Q1, controls the output that its on-off realizes pulsewidth modulation.
A kind of corresponding overlength trackless bus high-voltaghe compartment of above system and auxiliary converter cabinet monitoring method, specific steps are such as
Under:
S1. after high-voltaghe compartment and auxiliary converter cabinet are powered, monitoring system obtains electric, beginning and car running computer progress CAN communication
" shaking hands " carries out data transmission after communication " shaking hands " success；
S2. multiple sensor signal acquisition circuit starts collection voltages, electric current and temperature signal, acquires by high voltage power supply
Main control chip is sent to after processing comparison circuit processing and carries out calculation processing, whole process is recorded, and by gained high-voltaghe compartment
And the working condition of auxiliary converter cabinet is sent to car running computer by CAN bus；
S3. judge whether the working condition of high-voltaghe compartment and auxiliary converter cabinet has exception, be to enter step S4, otherwise tie
Beam；
S4. main control chip carries out corresponding actions by multichannel low-voltage relay signal output apparatus, protects high-voltaghe compartment and auxiliary
Converter cabinet is helped, and car running computer is sent by CAN bus by this abnormal signal.
In step S2, voltage, electric current and temperature signal are sent to main control chip after amplifier is handled.
The utility model can utilize C language compiler (Fig. 7), control the work of each electronic component, to high-voltaghe compartment and
Auxiliary converter cabinet working condition and coupled situation, which are acquired and pass through CAN bus, uploads to car running computer.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (6)
1. a kind of overlength trackless bus high-voltaghe compartment and auxiliary converter cabinet monitor system, which is characterized in that including main control chip and
Peripheral circuit engaged therewith, the main control chip are ARM7 processor comprising CAN bus transceiving chip, for receiving row
The CAN signal that vehicle computer issues analyzes CAN signal, reads running information, and high-voltaghe compartment and auxiliary converter cabinet operation information are led to
It crosses CAN bus and is uploaded to car running computer；
The peripheral circuit includes:
The CAN bus circuit of 2 road different frequencies；
Multiple sensor signal acquisition circuit is sent to main control chip for acquiring plurality of voltages, electric current and temperature signal, right
The working condition and coupled situation of high-voltaghe compartment and auxiliary converter cabinet are monitored；
Multichannel low-voltage relay signal output apparatus；
High voltage power supply acquisition process comparison circuit.
2. monitoring system according to claim 1, which is characterized in that the CAN bus circuit by high_voltage isolation device and
CAN transceiver and peripheral circuit engaged therewith composition, for being communicated with car running computer.
3. monitoring system according to claim 2, which is characterized in that the CAN bus circuit structure is as follows:
Receive pin CAN1-RX, transmission pin CAN1-TX connects #70, #71 pin of ARM7 processor respectively, and passes through respectively
Resistance R45, resistance R44 are transmitted to transceiver U24, during which pass through resistance R17 respectively, capacitor C9 is pulled up, or pass through resistance
R18, capacitor C10 are pulled up, and are enhanced signal strength, are communicated with car running computer, and data are transmitted；
Receive pin CAN2-RX, transmission pin CAN2-TX connects #51, #52 pin of ARM7 processor, and passes through resistance respectively
R42, resistance R43 are transmitted to transceiver U23, during which pass through resistance R15 respectively, capacitor C7 is pulled up, or by resistance R16,
Capacitor C8 is pulled up, and signal strength is enhanced, and is communicated with the peripheral circuit of other cooperation main control chips, transmits data.
4. monitoring system according to claim 1, which is characterized in that the collecting sensor signal circuit is by operation amplifier
Device TLC2261AI, sampling resistor and peripheral circuit engaged therewith composition.
5. monitoring system according to claim 1, which is characterized in that the low-voltage relay signal output apparatus is by driving
Chip and high-voltage relay composition, for driving the high-power electric appliances such as protective relay.
6. monitoring system according to claim 1, which is characterized in that the high voltage power supply acquisition process comparison circuit is by adopting
Sample resistance, operational amplifier and peripheral circuit composition, for parameters such as monitoring power voltages.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821320406.8U CN208459827U (en) | 2018-08-16 | 2018-08-16 | A kind of overlength trackless bus high-voltaghe compartment and auxiliary converter cabinet monitor system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821320406.8U CN208459827U (en) | 2018-08-16 | 2018-08-16 | A kind of overlength trackless bus high-voltaghe compartment and auxiliary converter cabinet monitor system |
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| Publication Number | Publication Date |
|---|---|
| CN208459827U true CN208459827U (en) | 2019-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821320406.8U Active CN208459827U (en) | 2018-08-16 | 2018-08-16 | A kind of overlength trackless bus high-voltaghe compartment and auxiliary converter cabinet monitor system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109032030A (en) * | 2018-08-16 | 2018-12-18 | 株洲联诚集团控股股份有限公司 | A kind of overlength trackless bus high-voltaghe compartment and auxiliary converter cabinet monitor system and method |
-
2018
- 2018-08-16 CN CN201821320406.8U patent/CN208459827U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109032030A (en) * | 2018-08-16 | 2018-12-18 | 株洲联诚集团控股股份有限公司 | A kind of overlength trackless bus high-voltaghe compartment and auxiliary converter cabinet monitor system and method |
| CN109032030B (en) * | 2018-08-16 | 2024-04-09 | 株洲联诚集团控股股份有限公司 | Monitoring system and method for super-long trackless bus high-voltage box and auxiliary converter cabinet |
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