CN208861155U - Hot backup redundancy display - Google Patents
Hot backup redundancy display Download PDFInfo
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- CN208861155U CN208861155U CN201821763415.4U CN201821763415U CN208861155U CN 208861155 U CN208861155 U CN 208861155U CN 201821763415 U CN201821763415 U CN 201821763415U CN 208861155 U CN208861155 U CN 208861155U
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Abstract
A kind of hot backup redundancy display, including motherboard, active and standby recognition unit, expanding element and power supply unit, motherboard A and motherboard B are identical redundant module；Interface unit devises external CAN interface, keystroke interface, near field communication interface (NFC)；Peripheral hardware control circuit of the interface unit as main control unit, has an interface circuit for reading near-field communication equipment, and driver's IC card of turning out for work passes through wireless non-electrical way of contact communication；Working state signal of the active and standby recognition unit by identification motherboard, the output enabled state of control interface unit A/B after active and standby recognition unit collects the fault-signal of main control unit, carry out hot standby switch when main control unit failure.When the utility model has the following technical effect that failure, automatically switches the work of main control unit interface unit, do not need to stop；Driver's attendance information IC card is read by near field communication interface, which is non-electrical contact.
Description
Technical field
The utility model relates to a kind of display more particularly to a kind of display for Locomotive Running Monitor System are flat
Platform.
Background technique
With China railways cause high speed development, Train Control Technology also towards safer, more reliable direction it is continuous before
Into.Real time information on Locomotive Running Monitor System display is played the role of driver's manipulation train operation conclusive.Cause
This, the reliability of display just becomes most important.The Vehicular display device of existing Locomotive Running Monitor System has following two point
Class: without standby host or redundancy cold standby.At present there is following two in scheme:
1. Locomotive Running Monitor System is just ineffective after standby host display fault.
2. redundancy cold standby display, when failure, is switched to minimum 2 seconds that standby system needs, and screen display switching when
It waits to need to stop and carry out, therefore the switching of stand-by redundancy greatly affects driving efficiency.
In addition, monitoring system host display needs the sector number for reading this train operation before driving, originates station
The information such as number, train number number, driver/secondary driver number, marshalling.These information are stored in driver's attendance information IC card, but
Display reads IC card and still uses direct electrical contact mode, i.e., the IC card connector being inserted into IC card in screen display.
Connector contact restricted lifetime deposits the possibility of at a time connector failure, influences driver's use.
Utility model content
The utility model provides a kind of display of Locomotive Running Monitor System, to solve technology of the existing technology
Problem.
The utility model provides a kind of hot backup redundancy display, including motherboard A, motherboard B, active and standby recognition unit, expansion
Exhibition unit and power supply unit, motherboard A/B separately include main control unit A/B, interface unit A/B and storage unit A/B, motherboard
A and motherboard B is identical redundant module；
Wherein, the interface unit devises external CAN interface, keystroke interface, near field communication interface (NFC)；
In the state that the interface unit is in work, corresponding main control unit can pass through interface unit and peripheral hardware and institute
State Locomotive Running Monitor System main-machine communication；In the state that interface unit is in inoperative, interface unit shields corresponding master control
The data and control command of unit output；
Peripheral hardware control circuit of the interface unit as main control unit has the interface electricity for reading near-field communication equipment
Road, interface circuit have an opening and closing communication function, and driver's IC card of turning out for work passes through the wireless non-electrical way of contact and communicates；
The active and standby recognition unit passes through the working state signal of identification motherboard, and the output of control interface unit A/B makes
Energy state after the active and standby recognition unit collects the fault-signal of main control unit A, carries out hot standby when main control unit A failure
Switching changes the switch state of interface unit A/B
The utility model has the following technical effect that in main control unit A or interface unit A failure, automatically switches to master
Unit B and interface unit B work are controlled, does not need to stop；Driver's attendance information IC card is read by near field communication (NFC) interface
It takes, which is non-electrical contact, without considering connector contact life problems when display maintenance parts.
Detailed description of the invention
Fig. 1 is the display main functional modules schematic diagram of the utility model.
The switching flow figure of hot backup redundancy display when Fig. 2 is failure.
Specific embodiment
The utility model is described in detail combined with specific embodiments below.Following embodiment will be helpful to this field
Technical staff further understand the utility model, but do not limit the utility model in any form.It should be noted that this
For the those of ordinary skill in field, without departing from the concept of the premise utility, several deformations can also be made and changed
Into these are all within the protection scope of the present invention.
As shown in Figure 1, the display of Locomotive Running Monitor System includes motherboard A, motherboard B, active and standby recognition unit, expansion
Open up unit and power supply unit.Motherboard A/B separately includes main control unit A/B, interface unit A/B and storage unit A/B.Motherboard
A and motherboard B is identical redundant module.
The motherboard includes main control unit, interface unit and storage unit.Motherboard by expanding element and peripheral hardware into
Row physical connection, i.e. motherboard A/B are carried out in parallel by expanding element.Any one motherboard cooperates active and standby recognition unit and expansion
Exhibition unit can individually complete letter of turning out for work with the communication of Locomotive Running Monitor System host, the display control of LCD screen, driver
Cease the reading data of IC card, key is read and voice plays.
The main control unit is used for the calculating and processing of communication data, while data are shown according to certain rules in liquid
On crystal display screen.The interface unit designs external CAN interface, keystroke interface, near field communication interface (NFC), in interface
Unit is in the state of work, and corresponding main control unit can be communicated by interface unit with peripheral hardware and monitoring host computer；It is connecing
Mouth unit is in the state of inoperative, and interface unit shields the data and control command of corresponding main control unit output.
Peripheral hardware control circuit of the interface unit as main control unit, can complete following functions:
1) has audio data decoding function, the digital audio file of main control unit output is converted to analog signal, audio
Decoding interface has function that is enabled and closing output signal；
2) have AD acquisition function, the analog signals of external environment light intensity can be converted into digital signal, carry out
Ambient light intensity judgement, and then control display backlight intensity；
3) have LCD display control function, LVDS signal can be converted into the parallel digital signal of main control unit, control
Display, control module have function that is enabled and closing output signal；
4) has key-press input acquisition interface, as the acquisition channel of driver input signal, key-press input channel has out
The function of opening and close；
5) has the interface circuit of two-way CAN communication, interface circuit, which has, opens and closes the function that communication is sent；
6) has the interface circuit for reading near-field communication equipment, interface circuit has opening and closing communication function.Driver
The IC that turns out for work is communicated by the wireless non-electrical way of contact, and display is when reading IC data without considering the connector contact service life
Problem.Theoretically, without knocking, touching situation antenna casing is caused to damage, no replacement is required in life period of an equipment for card reading component.
Store the system software data of display in the storage unit.When maintenance personnel is carrying out upgrade-system file
When, upgrading tool can only carry out data exchange with main control unit an A or B simultaneously.A main control unit completes system wherein
After the task of document upgrading, system file is carried out by the two-way spi bus before the main control unit A and main control unit B
It is synchronous, it is ensured that maintenance personnel, which only carries out a updating operation, to upgrade the two subsystems of redundancy.
The active and standby recognition unit default does opening operation to the interface unit A after powering on, while closing to interface unit B
Closed operation.Working state signal of the active and standby recognition unit by identification motherboard, the enabled shape of the output of control interface unit A/B
State.When main control unit A is operated normally, active and standby recognition unit keeps the switch state of current interface unit A/B, i.e. main control unit
The communication of B, which is only received, not to be sent out and not can control peripheral hardware；When main control unit A failure, active and standby recognition unit collects main control unit A's
After fault-signal, hot standby switch is carried out, changes the switch state of interface unit A/B.It is come from since main control unit B has received always
The information data of on-vehicle host, main control unit B is when allowing output information, it is ensured that with monitoring system host cycle synchronisation,
Achieve the effect that seamless switching.
Light sensing function is set on the expanding element, for lighting key indicator lamp automatically when dark.Institute
It states expanding element and has two-way audio power amplification function, be separately connected the left and right acoustic channels analog signal of motherboard output.Extension
Unit two-way audio power amplifier shares for motherboard A, motherboard B, and two-way audio power amplifier decibel connects audio tweeter.
Said supply unit is connected with locomotive battery power supply, by electrical locomotive power be converted into for motherboard, expanding element,
The power supply that the equipment such as liquid crystal display use.
The switching flow of hot backup redundancy display when embodiment failure
As shown in Fig. 2, main control unit A/B carries out self-test operations respectively after the power-up, host is waited to send after completing self-test
Then connection request starts to interactively communicate data to be attached foundation with monitoring host computer.Main control unit A is job note at this time
Member, main control unit B can only receive information as hot standby master control but can not send response message.
After main control unit A failure, the working signal that active and standby recognition unit recognizes main control unit A stops, and makes to connect immediately
Mouth unit A is in close state, and main control unit A is made not can control peripheral hardware；Interface unit B is in the open state, make master control list
First B can interactively communicate data in monitoring host computer, and control display peripheral hardware.
State is always maintained at power-off shutdown at this time, then this is switched on after powering on and repeats process as above.
The utility model has the beneficial effects that (1) has the function of breakdown judge, in main control unit A or interface unit A failure
When, main control unit B and interface unit B work is automatically switched to, does not need to stop, therefore do not influence train operation.(2) driver goes out
Diligent information IC card is read by near field communication (NFC) interface, which is non-electrical contact, display dimension
Without considering connector contact life problems when protecting part.
The foregoing is merely the preferred embodiments of the utility model, are not intended to limit the guarantor of the utility model
Protect range.Any modification, equivalent substitution, improvement and etc. made within the spirit and principle of the present invention should all include
Within the protection scope of the utility model.
Claims (10)
1. a kind of hot backup redundancy display, including motherboard A, motherboard B, active and standby recognition unit, expanding element and power supply unit,
Motherboard A/B separately includes main control unit A/B, interface unit A/B and storage unit A/B, and motherboard A is identical with motherboard B
Redundant module；
Wherein, the interface unit devises external CAN interface, keystroke interface, near field communication interface NFC；
In the state that the interface unit is in work, corresponding main control unit can be transported by interface unit and peripheral hardware and train
Row monitoring system main-machine communication；In the state that interface unit is in inoperative, interface unit shields corresponding main control unit output
Data and control command；
Peripheral hardware control circuit of the interface unit as main control unit has the interface circuit for reading near-field communication equipment, connects
Mouth circuit has opening and closing communication function, and driver's attendance information IC card passes through the wireless non-electrical way of contact and communicates；
Working state signal of the active and standby recognition unit by identification motherboard, the enabled shape of the output of control interface unit A/B
State after the active and standby recognition unit collects the fault-signal of main control unit A, carries out hot standby cut when main control unit A failure
It changes, changes the switch state of interface unit A/B.
2. hot backup redundancy display according to claim 1, which is characterized in that the motherboard is by expanding element and outside
If carrying out physical connection, i.e. motherboard A/B is carried out in parallel by expanding element；
Any one motherboard cooperates active and standby recognition unit and expanding element that can individually complete and Locomotive Running Monitor System host
Communication, the display control of LCD screen, the reading data of driver's attendance information IC card, key read and voice play.
3. hot backup redundancy display according to claim 1 or 2, which is characterized in that the active and standby recognition unit default pair
Interface unit A after powering on does opening operation, while doing shutoff operation to interface unit B.
4. hot backup redundancy display according to claim 3, which is characterized in that active and standby when main control unit A is operated normally
Recognition unit keeps the switch state of current interface unit A/B, i.e., the communication of main control unit B, which is only received, does not send out and not can control outside
If.
5. hot backup redundancy display according to claim 4, which is characterized in that main control unit B is received always from described
The information data of Locomotive Running Monitor System host, main control unit B guarantee to supervise with the train operation when allowing output information
System host cycle synchronisation is controlled, achievees the effect that seamless switching.
6. hot backup redundancy display according to claim 1 or 2, which is characterized in that store in the storage unit aobvious
Show the system software data of device.
7. hot backup redundancy display according to claim 6, which is characterized in that when maintenance personnel is carrying out upgrade-system text
When part, upgrading tool can only carry out data exchange with main control unit an A or B simultaneously；A main control unit completes system wherein
After the task of document upgrading of uniting, system text is carried out by the two-way spi bus before the main control unit A and main control unit B
Part is synchronous, it is ensured that maintenance personnel, which only carries out a updating operation, to upgrade the two subsystems of redundancy.
8. hot backup redundancy display according to claim 1, which is characterized in that the main control unit is for communication data
It calculates and handles, while data being shown on liquid crystal display according to certain rules.
9. hot backup redundancy display according to claim 1, which is characterized in that said supply unit and locomotive battery power supply
It is connected, electrical locomotive power is converted into the power supply used for motherboard, expanding element, liquid crystal display.
10. hot backup redundancy display according to claim 1, which is characterized in that light is arranged on the expanding element
Inducing function, for lighting key indicator lamp automatically when dark.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821763415.4U CN208861155U (en) | 2018-10-29 | 2018-10-29 | Hot backup redundancy display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821763415.4U CN208861155U (en) | 2018-10-29 | 2018-10-29 | Hot backup redundancy display |
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| Publication Number | Publication Date |
|---|---|
| CN208861155U true CN208861155U (en) | 2019-05-14 |
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Family Applications (1)
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| CN201821763415.4U Active CN208861155U (en) | 2018-10-29 | 2018-10-29 | Hot backup redundancy display |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110361979A (en) * | 2019-07-19 | 2019-10-22 | 北京交大思诺科技股份有限公司 | A kind of safety computer platform in railway signal field |
| CN110789569A (en) * | 2019-10-17 | 2020-02-14 | 北京全路通信信号研究设计院集团有限公司 | Column control DMI data redundancy control method and system |
| CN113619647A (en) * | 2021-08-27 | 2021-11-09 | 中车唐山机车车辆有限公司 | Vehicle-mounted display device and train |
-
2018
- 2018-10-29 CN CN201821763415.4U patent/CN208861155U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110361979A (en) * | 2019-07-19 | 2019-10-22 | 北京交大思诺科技股份有限公司 | A kind of safety computer platform in railway signal field |
| CN110789569A (en) * | 2019-10-17 | 2020-02-14 | 北京全路通信信号研究设计院集团有限公司 | Column control DMI data redundancy control method and system |
| CN113619647A (en) * | 2021-08-27 | 2021-11-09 | 中车唐山机车车辆有限公司 | Vehicle-mounted display device and train |
| CN113619647B (en) * | 2021-08-27 | 2024-03-22 | 中车唐山机车车辆有限公司 | Vehicle-mounted display device and train |
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