CN115437233A - Bidirectional driving system of tourist coach based on redundant PLC - Google Patents
Bidirectional driving system of tourist coach based on redundant PLC Download PDFInfo
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- CN115437233A CN115437233A CN202211084493.2A CN202211084493A CN115437233A CN 115437233 A CN115437233 A CN 115437233A CN 202211084493 A CN202211084493 A CN 202211084493A CN 115437233 A CN115437233 A CN 115437233A
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- 238000004891 communication Methods 0.000 claims description 37
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- 230000003213 activating effect Effects 0.000 claims description 4
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 238000001994 activation Methods 0.000 description 11
- 230000004913 activation Effects 0.000 description 10
- 238000013461 design Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 238000009826 distribution Methods 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
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- 238000011217 control strategy Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B9/00—Safety arrangements
- G05B9/02—Safety arrangements electric
- G05B9/03—Safety arrangements electric with multiple-channel loop, i.e. redundant control systems
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Abstract
The invention relates to a control system with advanced performance, lower cost, safety, reliability and strong applicability, which realizes the bidirectional driving switching function of a tourist car configured based on redundant PLC, improves the practicability, reliability, safety and market competitiveness of the tourist car control system and is based on the redundant PLC.
Description
Technical Field
The invention relates to a control system with advanced performance, lower cost, safety, reliability and strong applicability, which realizes the bidirectional driving switching function of a tourist coach based on redundant PLC configuration and improves the practicability, reliability, safety and market competitiveness of the tourist coach control system.
Background
At present, control systems of large-scale touring cars are roughly divided into three types, namely, control systems based on urban rail vehicles, control systems based on industrial controllers and control systems based on engine pure hardwires.
The control voltage of the control system based on the urban rail vehicle is mostly 110V direct current power supply provided by a vehicle-mounted auxiliary storage battery, the storage battery is connected through a switch button of a cab, the control system is powered on and started, the cab at an operation end is activated through a key switch, and the cab at the other end is temporarily in an inactivated state. The equipment in the control system is mostly special equipment in the field of urban rail transit, the system cost is high, the circuit is complex, and the control system is not suitable for the drive control of large-scale touring cars.
The control voltage of the control system based on the industrial controller is mostly a direct current 24V power supply provided by a switching power supply, and the control system is powered on and started through a switch button of a cab so as to be connected with a driving power supply. The control system basically gives priority to one-way driving, has no two-way driving control right switching function, has no redundant configuration of a power supply, has lower system cost and is a mainstream control mode of a large-scale tourist coach.
The pure hard wire control system based on the engine has the advantages that the control voltage of the pure hard wire control system is mostly a direct-current 24V power supply, the engine is started, the small generator in the pure hard wire control system continuously outputs the power supply, the control circuit is electrified, and the basic control of the vehicle is realized through the switch button of the cab. The control circuit is more applied to engineering rescue vehicles and has no bidirectional driving control right switching function.
Disclosure of Invention
The design purpose is as follows: the defects in the background art are avoided, the control requirement of the large-scale tourist coach with energy storage type power supply is met, a control system with advanced performance, low cost, safety and reliability is designed, the function of bidirectional driving and switching of the tourist coach based on redundant PLC configuration is achieved, and the bidirectional driving system of the tourist coach based on the redundant PLC, which is used for improving the practicability, reliability, safety and market competitiveness of the control system of the tourist coach, is improved.
The control right switching circuit of the front cab and the rear cab realizes that a control system (wake-up function) can be started in any cab at one end, a key switch is operated in the cab at an operation and control end, the control right of the cab at the end is activated (activation function) after the operation is carried out through a logic program of a controller, and the cab at the other end cannot carry out related operation temporarily; meanwhile, the system is also provided with an emergency traction mode and a rescue mode, and the emergency traction mode and the rescue mode can be started in a cab at any end, so that the safety and the controllability of the tourist coach control system are improved.
The design scheme is as follows: in order to achieve the above design objectives. The invention optimizes and improves the defects of the industrial controller-based control system, digests and absorbs the control strategy and circuit advantages of the urban rail vehicle-based control system, forms a set of tourist car bidirectional driving control system which is suitable for the control requirement of a large tourist car with a storage battery as a power source, and has redundant PLC with high reliability, low cost and strong practicability. Aiming at the condition that a control system based on an industrial controller is not provided with redundant PLC, the PLC is respectively arranged in the cabinets of the two ends MC1 and MC2 of the vehicle, a communication unit module is arranged in a control box (cabinet) of each carriage, and each driving unit and each control unit are connected in series through the arranged annular communication network, so that a set of redundant control system based on an annular communication network structure is formed, and the reliability of the tourist coach control system is improved.
1. The PLC is respectively arranged in the control cabinets at two ends of the vehicle, the communication unit module is arranged in each carriage, the whole vehicle is provided with an annular communication network for communication of the control system, and each driving unit and each control unit are connected in series through the annular communication network to form a set of redundant control system based on the annular communication network. The two PLCs are mutually redundant, process the same project data and the same user program in parallel and are synchronized through the connection of the annular communication network, when any one PLC fails, the other PLC takes over the control of the process, and the reliability of the control system is improved.
2. Setting a control flow of two steps of awakening and activating according to the control requirement of bidirectional driving of the large-scale tourist coach, carrying out awakening operation in a cab at any one end, and starting a vehicle control system to operate immediately; the key switch is activated by operating the cab at the control end, a signal is input to the controller and is subjected to program logic operation, the control authority of the cab at the end is activated, and the cab at the other end cannot be operated temporarily; meanwhile, the system is also provided with an emergency traction mode and a rescue mode, the emergency traction mode and the rescue mode can be started in any cab, and the safety and controllability of the tourist bus control system are improved.
3. In order to ensure the running safety of the vehicle, no matter which end of the vehicle is activated, as long as the mushroom head emergency stop switch of the cab at any end is knocked down, the main power supply contactor is powered off and disconnected, and when the cab is recovered, the cab control right needs to be activated again.
4. In order to improve the reliability of the system, an emergency traction mode and a rescue mode are also arranged. The emergency traction mode is that under the condition that a communication network of a vehicle control system fails, a vehicle operation instruction is directly sent to a driver through a hard line circuit, so that the emergency traction of a vehicle is realized; the rescue mode is that under the condition that the vehicle power supply circuit is completely failed and the emergency traction mode is also failed, the rescue vehicle provides a control power supply for the failed vehicle so as to realize basic control and brake relief of the vehicle and facilitate traction of the rescue vehicle.
The technical scheme is as follows: the utility model provides a two-way driving system of sight seeing bus based on redundant PLC, includes large-scale sight seeing bus vehicle, in the system cabinet of large-scale sight seeing bus vehicle both ends MC1 and MC2, respectively dispose a PLC, dispose a communication unit module in the control box or the control cabinet of each carriage, concatenate each drive unit, the control unit among the PLC through the annular communication network that sets up, form one set of redundant control system based on annular communication network structure, two PLC are redundant each other, parallel processing same project data and same user program, and carry out the synchronization through the connection of annular communication network, when arbitrary PLC trouble, another PLC can take over it and control the process.
Compared with the background technology, firstly, the redundancy design idea of double PLC is adopted, and the reliability of the control system is improved; secondly, a set of annular communication network is adopted to connect control, drive and other equipment, so that the system stability is improved; thirdly, the system sets a wake-up operation mode to realize that the control system can be started in any cab; fourthly, aiming at the two-way driving control requirement of the tourist coach, a set of control right switching circuit based on PLC control is designed; fifthly, a set of drive control mode based on hard line control is set, and emergency traction after vehicle network failure is realized.
Drawings
Fig. 1 is a network topology diagram of a whole vehicle control system.
Fig. 2 is a system power distribution circuit diagram.
Fig. 3 is a circuit diagram of system wake-up and rescue mode switching.
Fig. 4 is a circuit diagram of bidirectional driving control right switching.
Fig. 5 is a diagram of an MC1 side emergency traction circuit.
Detailed Description
Example 1: reference is made to fig. 1-5. The utility model provides a two-way driving system of sight seeing bus based on redundant PLC, includes large-scale sight seeing bus vehicle, in the system cabinet of large-scale sight seeing bus vehicle both ends MC1 and MC2, respectively dispose a PLC, dispose a communication unit module in the control box or the control cabinet of each carriage, concatenate each drive unit, the control unit among the PLC through the annular communication network that sets up, form one set of redundant control system based on annular communication network structure, two PLC are redundant each other, parallel processing same project data and same user program, and carry out the synchronization through the connection of annular communication network, when arbitrary PLC trouble, another PLC can take over it and control the process.
Namely: aiming at the function realization of redundant PLC, siemens S7-1500R/H series PLC are respectively configured in power distribution cabinets of driving control rooms MC1 and MC2 at two ends of a vehicle, a communication unit module and a plurality of input and output modules are respectively configured in each carriage control box (cabinet), and the network topology of the whole vehicle control system is shown in figure 1. The whole vehicle is provided with an annular communication network for controlling system communication, and the driving units, the control units, the touch screens and other equipment of each carriage are connected in series through the annular communication network to form a set of redundancy control system based on the annular communication network. The input module collects the state signals of each carriage, transmits the collected signals to the redundant PLC through the communication unit module, transmits the calculated control instructions to the output module of each carriage through the communication unit module after the logical operation of the program, controls the corresponding electric elements to act, and the two redundant PLCs can process the same project data and the same user program in parallel and carry out synchronization through the annular communication network. One of the two PLCs breaks down or the annular communication network is disconnected, and the other PLC can take over the failure or disconnection to control the process, so that the normal process operation of the system cannot be influenced. The S7-1500R/H redundancy system can provide a high degree of reliability and system availability.
In a redundant system, one of the two PLCs will assume the role of the master PLC. The other PLC will act as a following PLC (standby PLC). During operation, the roles of the PLCs can be changed. Because the main PLC and the standby PLC are synchronized, the main PLC can be quickly switched when a fault occurs. If the main PLC fails, the standby PLC will continue to perform process control as a new main PLC.
Two steps of operation control processes of awakening and activating are arranged in the cabinet manufacturing of the MC1 and the MC2 at the two ends of the large-scale touring vehicle, the awakening operation can be carried out in a cab at any end, and then a vehicle control system is started to operate; the key switch is activated by operating the cab at the control end, a signal is input to the controller and is subjected to program logic operation, the control authority of the cab at the end is activated, and the cab at the other end cannot be operated temporarily; meanwhile, the system is also provided with an emergency traction mode and a rescue mode, the emergency traction mode and the rescue mode can be started in any cab, and the safety and controllability of the tourist bus control system are improved.
Namely: in the bidirectional driving control circuit, a two-step operation control flow of waking up and activating is set, and the detailed circuit connection relationship is shown in fig. 3 (system waking up and rescuing mode switching circuit) and fig. 4 (bidirectional driving control right switching circuit). It can be seen from the figure that the driver 'S cab can be wakened up at any end, the wakening switch (S110 or S310) is turned on, the control power supply contactor KM2 of the vehicle is powered on and attracted, then the KD110V control power supply of the whole vehicle is switched on as can be seen from figure 2 (system distribution circuit diagram), the whole vehicle control system is wakened up to run and carries out self-checking on the vehicle state immediately, and after the self-checking is finished and the switch buttons of the driver' S cabs at both ends are detected to be arranged at the safe positions, the vehicle control system has the activation operation condition. When the activation operation is needed, the key switch (S111 or S311) is activated only by operating the activation key switch in the cab of the control end, when the MC1 end is activated, the activation key switch S111 is turned on, and after a switch signal is input to the controller A1 and is subjected to logical operation of a program, the main power supply contactor KM1 and the MC1 activation state relay K101 are controlled to be attracted; when the MC2 end is activated, the activation key switch S311 is turned on, a switch signal is input to the controller C1, and after the switch signal is subjected to program logic operation, the main power contactor KM1 and the MC2 activation state relay K301 are controlled to be attracted, when KM1 is attracted, the QD630V driving power supply of the whole vehicle is connected, and the vehicle has a driving running condition. In any case, the cabs at both ends of MC1 and MC2 can only activate one end, and the other end will temporarily not have an activation condition.
No matter which end of the vehicle is activated, the main power contactor is disconnected after power failure as long as the mushroom head emergency stop switch of the cab at any end is knocked down, and the cab control right needs to be reactivated when the vehicle is recovered.
Namely: in order to ensure the running safety of the vehicle, no matter which cab at one end of the vehicle is activated, as long as the mushroom head emergency stop switch of any cab at one end is knocked down (S107 or S307), the main power supply contactor KM1 and the activated state relay (K101 or K301) at the activated end are disconnected in a power-off mode. When the vehicle is recovered, the switch buttons of the cabs at the two ends of the vehicle are placed at the safety positions (including the activation key switch S111 or S311), the shot mushroom head emergency stop switch (S107 or S307) is reset, and finally, the vehicle is normally operated according to the vehicle activation process.
The front end and the rear end of the large-scale tourist car are provided with an emergency traction mode and a rescue mode, and the emergency traction mode is that under the condition that a communication network of a car control system fails, a car operation instruction is directly sent to a driver through a hard-wire circuit, so that the emergency traction of the car is realized. The front end and the rear end of the large-scale tourist car are provided with rescue modes, namely, the rescue modes are that under the condition that a car power supply circuit completely breaks down and an emergency traction mode also fails, the rescue car provides a control power supply for the broken-down car so as to realize basic control and brake relief of the car and facilitate traction of the rescue car.
Namely: in order to improve the reliability of the system, the system is also provided with an emergency traction mode and a rescue mode.
The emergency traction mode is that in the case of failure of the vehicle annular communication network, the vehicle operation instruction is directly given to the driver (INV 1-INV 4) through hard wire connection so as to realize the emergency traction control of the vehicle. Taking the MC1 end starting emergency traction mode as an example, the detailed circuit is shown in fig. 5 (MC 1 end emergency traction circuit), before the emergency traction mode is not started, the control signal of the master handle is only sent to the redundant PLC system, and after the logical operation of the program, the control signal controls the driver to operate through the annular communication network; when an emergency traction switch S117 is opened in a cab at the MC1 end, the emergency traction relay K120 is electrified and closed to indicate that the MC1 end starts an emergency traction mode, a control signal of a master command handle is simultaneously sent to a redundant PLC system and a driver (INV 1-INV 4), and the driver executes a hard wire control command to drive a vehicle to run in the emergency traction mode because the hard wire control authority of the driver is higher than the communication control authority. Similarly, when the emergency traction switch S317 is opened in the cab at the MC2 side, the emergency traction relay K320 is closed, indicating that the emergency traction mode has been activated at the MC2 side. No matter which end of the cab starts the emergency traction mode, the control system enables the main power supply contactor KM1 to be powered on and pulled in, and the vehicle drivers (INV 1-INV 4) are powered on and started, so that the emergency traction of the vehicle is realized.
In the rescue mode, when a vehicle control circuit fails and the emergency traction mode fails, control equipment of the whole vehicle is started through a YJD110 power supply provided by a rescue vehicle, so that simple operations such as opening and closing of a shield door, releasing of a brake and the like are realized. No matter which end of the vehicle is activated, as long as the rescue switch is opened in the cab at any end of the vehicle (S112 or S312), the rescue power supply contactor KM3 at the MC1 end and the rescue power supply contactor KM4 at the MC2 end are simultaneously closed, the whole vehicle JYD110V rescue control power supply is switched on, the control system is immediately started, and at the moment, the basic control of the vehicle (except for high-voltage equipment) can be realized. In consideration of circuit safety, the control power supply contactor KM2 is disconnected after power loss.
It is to be understood that: although the above embodiments have been described in some detail for the purpose of illustrating the present invention, these descriptions are only intended to be a brief description of the design of the present invention, and are not intended to limit the design of the present invention, and any combination, addition or modification without departing from the scope of the present invention.
Claims (5)
1. The utility model provides a two-way driving system of sight-seeing bus based on redundant PLC, includes large-scale sight-seeing bus vehicle, characterized by: in the system cabinets of the MC1 and the MC2 at two ends of the large-scale touring vehicle, a PLC is respectively configured, a communication unit module is configured in a control box or a control cabinet of each carriage, each driving unit and control unit in the PLC are connected in series through a set annular communication network to form a set of redundant control system based on an annular communication network structure, the two PLCs are mutually redundant, process the same project data and the same user program in parallel, and are synchronized through the connection of the annular communication network, and when any one PLC fails, the other PLC can take over the PLC to control the process.
2. The redundant PLC based two-way ride system for a tourist bus according to claim 1, wherein: two-step operation control processes of awakening and activating are arranged in the cabinets of the MC1 and the MC2 at the two ends of the large-scale tourist car, the awakening operation can be carried out in a cab at any end, and then a car control system is started to operate; the key switch is activated by operating the cab at the control end, a signal is input to the controller and is subjected to program logic operation, the control authority of the cab at the end is activated, and the cab at the other end cannot be operated temporarily; meanwhile, the system is also provided with an emergency traction mode and a rescue mode, the emergency traction mode and the rescue mode can be started in any cab, and the safety and the controllability of the tourist coach control system are improved.
3. The redundant PLC based two-way ride system for a tourist bus according to claim 1, wherein: no matter which end of the vehicle is activated, the main power contactor is disconnected after power failure as long as the mushroom head emergency stop switch of the cab at any end is knocked down, and the cab control right needs to be reactivated when the vehicle is recovered.
4. The redundant PLC-based tour bus bi-directional driving system of claim 1, wherein: the front end and the rear end of the large-scale tourist car are provided with an emergency traction mode and a rescue mode, and the emergency traction mode is that under the condition that a communication network of a car control system fails, a car operation instruction is directly sent to a driver through a hard-wire circuit, so that the emergency traction of the car is realized.
5. The redundant PLC-based tour bus bi-directional driving system of claim 1, wherein: the front end and the rear end of the large-scale tourist car are provided with rescue modes, namely, the rescue car provides a control power supply for a fault car under the conditions that a car power supply circuit completely fails and an emergency traction mode fails, so that basic control and braking relief of the car are realized, and the rescue car is convenient to pull.
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| CN202211084493.2A CN115437233A (en) | 2022-09-06 | 2022-09-06 | Bidirectional driving system of tourist coach based on redundant PLC |
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| CN202211084493.2A CN115437233A (en) | 2022-09-06 | 2022-09-06 | Bidirectional driving system of tourist coach based on redundant PLC |
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| KR20200143309A (en) * | 2018-12-19 | 2020-12-23 | 주식회사 만도 | Safety control system and method of self-driving vehicles |
| CN114348020A (en) * | 2021-12-22 | 2022-04-15 | 东风悦享科技有限公司 | 5G remote and automatic driving safety redundancy system and control method |
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2022
- 2022-09-06 CN CN202211084493.2A patent/CN115437233A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101723251A (en) * | 2009-12-29 | 2010-06-09 | 太原重工股份有限公司 | Electrical control system of crane of nuclear power plant |
| KR20200143309A (en) * | 2018-12-19 | 2020-12-23 | 주식회사 만도 | Safety control system and method of self-driving vehicles |
| CN111510398A (en) * | 2019-01-30 | 2020-08-07 | 施耐德电器工业公司 | Control device and method for redundant connections in a control plane network |
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