CN113777991B - Industrial vehicle intelligent network connection controller and remote monitoring system thereof - Google Patents
Industrial vehicle intelligent network connection controller and remote monitoring system thereof Download PDFInfo
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- CN113777991B CN113777991B CN202111081964.XA CN202111081964A CN113777991B CN 113777991 B CN113777991 B CN 113777991B CN 202111081964 A CN202111081964 A CN 202111081964A CN 113777991 B CN113777991 B CN 113777991B
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- G05B19/00—Programme-control systems
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Abstract
The invention discloses an intelligent network connection controller of an industrial vehicle and a remote monitoring system thereof. In order to solve the problems that in the existing Internet of vehicles control system, as the operation of each control unit is relatively isolated, more nodes in a distributed system are easy to cause huge communication data volume, reduced information security, complex control instruction setting and the like; the intelligent network connection system comprises a power supply unit, an information acquisition unit, an intelligent network connection controller, a remote monitoring unit and a driving unit, wherein the power supply unit is respectively connected with the information acquisition unit and the intelligent network connection controller, the information acquisition unit is connected with the intelligent network connection controller, the remote monitoring unit is connected with an MCU of the intelligent network connection controller, and the driving unit is connected with the MCU of the intelligent network connection controller. The intelligent network connection controller has the advantages that the information transmission accuracy and the information transmission safety of the intelligent network connection controller and the internet of vehicles background are effectively guaranteed, and the working stability and the information storage safety of the system are effectively protected.
Description
Technical Field
The invention relates to the field of intelligent network connection control of vehicles, in particular to an intelligent network connection controller of an industrial vehicle and a remote monitoring system thereof.
Background
Along with the development of networking and intellectualization of industrial vehicles, the traditional industrial vehicles are combined with the informatization technology and gradually upgraded into intelligent logistics equipment integrating digital and intelligent functions. The realization of remote monitoring and management of industrial vehicles based on the vehicle networking platform and the vehicle control system becomes an important research direction of the current industrial vehicles. Each control unit in the traditional car networking control system exists in a distributed control system mode, important data information in the system is transmitted and shared with the T-BOX (Telematics BOX) through a CAN bus network, and then the important data information is interconnected with the background through wireless communication by the T-BOX.
For example, a "internet of vehicles monitoring system and internet of vehicles control system" disclosed in chinese patent literature, its bulletin number CN111861842a, publication date is 10 months and 30 days in 2020, including a vehicle-mounted terminal, a server and a monitoring terminal, wherein the server is integrated with a vehicle network control system, and based on the beidou satellite navigation technology, the vehicle-mounted terminal is used for uploading the position information and state information of the current vehicle to the server, and establishing a network channel and a short message channel; the server is used for providing access service, communication service, web service, map service, cache service and database service; the monitoring end is used for accessing the Web server to acquire the dynamic data of the vehicle. The invention simplifies the manual operation, but the problems of huge communication data volume, reduced information security, complex control instruction setting and the like in the system are not solved effectively.
Disclosure of Invention
The invention mainly solves the problems of huge communication data volume, reduced information security, complex control instruction setting and the like which are easily caused by more nodes in a distributed system because the operation of each control unit is relatively isolated in the existing Internet of vehicles control system; the intelligent network controller of the industrial vehicle and the remote monitoring system thereof are provided, after information transmitted by each control unit of the internet of vehicles control system is collected through functional modules such as integrated information collection, data storage, data encryption, drive control, network communication and bus communication, the information is uniformly stored, packaged and encrypted in the intelligent network controller, and the information is transmitted to a background through a wireless communication module in the intelligent network controller to be monitored and managed, so that the accuracy and the safety of the information transmission of the intelligent network controller and the internet of vehicles background are effectively ensured.
The technical problems of the invention are mainly solved by the following technical proposal,
the invention relates to an intelligent network connection remote monitoring system of an industrial vehicle, which comprises the following components:
the power supply unit supplies power to the whole remote monitoring system, and when the power supply system fails, the power supply unit is switched to a standby power supply and checks the integrity of the transmitted data;
the information acquisition unit is used for transmitting the acquired key information such as the switching value input signal, the sensor signal, the operation parameters of the electrical control system, faults and the like to the intelligent network controller;
the control unit processes the received data information through the MCU and sends a control instruction to control the functions of the external control system;
the remote monitoring unit is used for receiving the monitoring information sent by the intelligent network connection controller and sending a remote control instruction;
and the driving unit is used for controlling equipment and an actuating mechanism of the distributed control system.
By adopting the scheme, the information in the system can be uniformly stored, packaged and encrypted, and then the information is transmitted to the background through the wireless communication module for monitoring and management, so that the information transmission accuracy and safety of the intelligent network controller and the internet of vehicles background are effectively ensured, and meanwhile, the conditions of data redundancy, complex control instructions and the like in the system are not generated.
Preferably, the power supply unit comprises a system power supply module, a power supply management module, a sensor power supply module, a standby lithium battery, a switch K1, a switch K2, a switch K3 and a switch K4;
a switch K1 is arranged between the system power supply module and the power supply management module, a first end of the switch K1 is connected with a power supply output end of the system power supply module, a second end of the switch K1 is connected with an input end of the power supply management module, and a voltage detector is arranged at the input end of the power supply management module;
a switch K2 and a switch K3 are arranged between the standby lithium battery and the power management module, a first end of the switch K2 is connected with an input end of the standby lithium battery, a second end of the switch K2 is connected with a first power supply output end of the power management module, a first end of the switch K3 is connected with an output end of the standby lithium battery, a second end of the switch K3 is connected with a standby input end of the power management module, when the standby lithium battery is in a charging state, the switch K2 is communicated, the switch K3 is disconnected, and when the standby lithium battery is in a power supply state, the switch K2 is disconnected, and the switch K3 is communicated;
the second power supply output end of the power supply management module is connected with the input end of the sensor power supply module, the third power supply output end of the power supply management module is connected with the power supply input end of the MCU, and an energy storage unit is arranged in the power supply management module;
a switch K4 is arranged between the system power supply module and the information acquisition module, a first end of the switch K4 is connected with a sensor output end of the system power supply module, and a second end of the switch K4 is connected with a power supply input end II of the information acquisition module;
the output end of the sensor power supply module is connected with the first power supply input end of the information acquisition module.
The dual power scheme can prevent the situation that the system loses data or delays due to power failure.
Preferably, the control unit comprises a debugging/configuration module, a driving controller, a single chip microcomputer MCU, an encryption chip and an external storage module, wherein the output end of the debugging/configuration module is in bidirectional connection with the debugging input end of the single chip microcomputer MCU, the output end of the driving controller is connected with the input end of an interface controller of the single chip microcomputer MCU, the information output end of the single chip microcomputer MCU is connected with the input end of the encryption chip, the output end of the encryption chip is connected with the input end of the external storage module, and the output end of the external storage module is connected with the information input end of the single chip microcomputer MCU.
By adopting the scheme, the information collected by the information collecting unit in the Internet of vehicles control system can be processed and then transmitted to the background for monitoring management.
Preferably, the main and standby power supply switching method comprises the following steps:
when the system power supply module supplies power, the switch K1 is conducted to output 32V voltage to the power supply management module, the power supply management module outputs 3.3V voltage to the MCU to output 9V voltage to the sensor, and the switch four-conduction system power supply module transmits 9V voltage to the sensor signal acquisition module;
when a voltage detector in the power management module detects that the voltage of the input end of the power management module is 30-35V, an electric signal is sent to the MCU to control the switch K2 to be on and the switch K3 to be off, and the power management module outputs 32V to charge the standby lithium battery;
when the system power supply module fails and is powered off, the voltage detector cannot detect the voltage or the voltage is smaller than 9V, the energy storage unit supplies power to the system, the power management module sends an electric signal to the MCU, the MCU turns off the switch K1, the switch K2 and the switch K4, the switch K3 is turned on, and the standby battery is turned into a power supply state to supply power to the system;
when the system power supply module fails and is powered off, data is not stored in the external storage module, so that the data is lost, and the MCU receives a pulse signal when the power is off and can acquire and recover the lost data when the power is off;
when the system data is transmitted to the external storage module and fails to power off, the data is lost or is lost, the external storage module does not receive the data, no acknowledgement electric signal is transmitted to the MCU, the MCU repeatedly transmits the last transmitted data if the external storage module acknowledgement electric signal is not received in a certain time for transmitting the data to the external storage module, the next data is retransmitted if the external storage module acknowledgement electric signal is received, the external storage module can check the length of the data for the received data, and if the data is detected to be lost or the length is smaller than the storage length, the external storage module can discard the stored data and does not transmit the acknowledgement electric signal to the MCU.
By adopting the method, when the main power supply fails, the backup power supply can be automatically switched to ensure uninterrupted power supply; meanwhile, the fault power supply can be thoroughly isolated from the system, so that secondary faults are avoided, and the reliability of the power supply system is improved.
Preferably, the information acquisition unit comprises an operation switch signal acquisition module, a sensor signal acquisition module, an instrument, a motor controller, a motor and a CAN bus network, wherein the input end of the operation switch signal acquisition module is connected with the output end of the sensor power supply module, the output end of the operation switch signal acquisition module is connected with the switching value input end of the MCU, the input end of the sensor signal acquisition module is connected with the output end of the sensor power supply module, the input end of the sensor signal acquisition module is connected with the second end of the switch K4, the output end of the sensor signal acquisition module is connected with the frequency input end of the MCU, the output end of the sensor signal acquisition module is connected with the voltage input end of the MCU, the output end of the instrument is connected with the input end of the CAN bus network in a bidirectional manner, the output end of the motor controller is connected with the input end of the CAN bus network in a bidirectional manner, and the output end of the motor controller is connected with the output end of the MCU in a bidirectional manner.
By adopting the scheme, the data information can be conveniently acquired, the data is not too huge, and the condition of data loss is not generated.
Preferably, the encryption chip in the control unit encrypts and decrypts the information collected in the system, and the encryption and decryption method of the encryption chip is as follows:
s1: the MCU sends the information acquired in the system, the hardware information of the MCU and the electric signal to the encryption chip through an SPI protocol;
s2: the encryption chip encrypts hardware information of the MCU to generate a first key;
s3: the encryption chip receives the information, randomly generates a character string, and adds the character string at the tail end of the data information;
s4: the encryption chip encrypts the new data information through a hash function to generate once hash encryption data;
s5: carrying out hash encryption on the primary hash encryption data by using a first key to generate secondary hash encryption data;
s6: the encryption chip encrypts storage address information of the secondary hash encryption data in the external storage module by using the first key to generate a second key;
s7: the first key and the second key are stored in an encryption chip, and the secondary hash encryption data is stored in an external storage module according to the information of the second key
S8: the decryption method is that the correct hardware information of the MCU is sent to the encryption chip to obtain a second key, the data is decrypted by the second key to obtain the storage position of the data in the external storage module, and the encryption process is only needed to be reversely deduced after the storage position of the data is obtained.
By adopting the scheme, the data security can be ensured.
Preferably, the remote monitoring unit comprises a management platform, a network communication module and a WIFI communication module, the first output end of the management platform is in bidirectional connection with the output end of the network communication module, the input end of the network communication module is in bidirectional connection with the network output end of the MCU, the second output end of the management platform is in bidirectional connection with the output end of the WIFI communication module, and the input end of the WIFI communication module is in bidirectional connection with the WIFI output end of the MCU.
By adopting the scheme, the management platform can receive the monitoring information sent by the control unit and can also send a remote control instruction, and the remote control of the execution and post-and bus network equipment is realized through the control unit.
Preferably, the driving unit comprises an executing mechanism, a high-side PWM output module and a switch output module, wherein the output end of the high-side PWM output module is connected with the input end of the executing mechanism, the input end of the high-side PWM output module is connected with the PWM output end of the MCU, the output end of the switch output module is connected with the second input end of the executing mechanism, and the input end of the switch output module is connected with the switch output end of the MCU.
The control of the distributed control system equipment is realized by the MCU interface controller, the driving controller of the control unit and an external CAN bus network; the control of the executing mechanism is realized by driving the executing mechanism through an output control unit of the MCU, a high-side PWM output module and a switch output module.
Preferably, the intelligent network controller for industrial vehicles comprises: the device comprises a control unit, a power management module, a sensor power supply module, a standby lithium battery, a switch K1, a switch K2, a switch K3, a network communication module, a WIFI communication module, a high-side PWM output module and a switch output module, wherein the second end of the switch K1 is connected with the input end of the power management module, the first end of the switch K2 is connected with the first power supply output end of the power management module, the first end of the switch K3 is connected with the output end of the standby lithium battery, the second end of the switch K3 is connected with the standby input end of the power management module, the second power supply output end of the power management module is connected with the input end of the sensor power supply module, the third power supply output end of the power management module is connected with the power supply input end of the control unit, the input end of the network communication module is connected with the network output end of the control unit in a bidirectional manner, the input end of the WIFI communication module is connected with the output end of the control unit, and the high-side power supply output end of the switch is connected with the input end of the PWM output module.
By adopting the scheme, the intelligent network controller can perform unified storage, encapsulation and encryption processing on information, and the information is transmitted to the background through the wireless communication module inside the controller for monitoring and management, so that the accuracy and the safety of information transmission between the intelligent network controller and the background of the Internet of vehicles are effectively ensured.
The beneficial effects of the invention are as follows: the double-power scheme can effectively protect the working stability of the system and the safety of information storage; after information transmitted by each control unit of the internet of vehicles control system is collected, the information is uniformly stored, packaged and encrypted in the intelligent internet of vehicles controller, and then the information is transmitted to the background through a wireless communication module in the controller for monitoring and management, so that the accuracy and safety of information transmission between the intelligent internet of vehicles controller and the background of the internet of vehicles are effectively ensured.
Drawings
Fig. 1 is a block diagram of the structure of the present invention.
Fig. 2 is a diagram of the encryption steps of the present invention.
Fig. 3 is a block diagram of an intelligent networking controller of the present invention.
In the figure, the system comprises a power supply unit 1, an information acquisition unit 2, a control unit 3, a remote monitoring unit 4, a driving unit 5 and an intelligent network controller 6.
Detailed Description
The technical scheme of the invention is further specifically described below through examples and with reference to the accompanying drawings.
Examples:
an intelligent network remote monitoring system for an industrial vehicle in this embodiment, as shown in fig. 1, includes a power supply unit 1, an information acquisition unit 2, a control unit 3, a remote monitoring unit 4, and a driving unit 5.
The power supply unit comprises a system power supply module, a power management module, a sensor power supply module, a standby lithium battery, a switch K1, a switch K2, a switch K3 and a switch K4; a switch K1 is arranged between the system power supply module and the power supply management module, a first end of the switch K1 is connected with a power supply output end of the system power supply module, a second end of the switch K1 is connected with an input end of the power supply management module, and a voltage detector is arranged at the input end of the power supply management module; a switch K2 and a switch K3 are arranged between the standby lithium battery and the power management module, a first end of the switch K2 is connected with an input end of the standby lithium battery, a second end of the switch K2 is connected with a first power supply output end of the power management module, a first end of the switch K3 is connected with an output end of the standby lithium battery, a second end of the switch K3 is connected with a standby input end of the power management module, when the standby lithium battery is in a charging state, the switch K2 is communicated, the switch K3 is disconnected, and when the standby lithium battery is in a power supply state, the switch K2 is disconnected, and the switch K3 is communicated; the second power supply output end of the power supply management module is connected with the input end of the sensor power supply module, the third power supply output end of the power supply management module is connected with the power supply input end of the MCU, and an energy storage unit is arranged in the power supply management module; a switch K4 is arranged between the system power supply module and the information acquisition module, a first end of the switch K4 is connected with a sensor output end of the system power supply module, and a second end of the switch K4 is connected with a power supply input end II of the information acquisition module; the output end of the sensor power supply module is connected with the first power supply input end of the information acquisition module.
The control unit 3 comprises a debugging/configuration module, a driving controller, a single chip microcomputer MCU, an encryption chip and an external storage module, wherein the output end of the debugging/configuration module is in bidirectional connection with the debugging input end of the single chip microcomputer MCU, the output end of the driving controller is connected with the input end of an interface controller of the single chip microcomputer MCU, the information output end of the single chip microcomputer MCU is connected with the input end of the encryption chip, the output end of the encryption chip is connected with the input end of the external storage module, and the output end of the external storage module is connected with the information input end of the single chip microcomputer MCU. .
The main and standby power supply switching method comprises the following steps:
when the system power supply module supplies power, the switch K1 is conducted to output 32V voltage to the power supply management module, the power supply management module outputs 3.3V voltage to the MCU to output 9V voltage to the sensor, and the switch four-conduction system power supply module transmits 9V voltage to the sensor signal acquisition module;
when a voltage detector in the power management module detects that the voltage of the input end of the power management module is 30-35V, an electric signal is sent to the MCU to control the switch K2 to be on and the switch K3 to be off, and the power management module outputs 32V to charge the standby lithium battery;
when the system power supply module fails and is powered off, the voltage detector cannot detect the voltage or the voltage is smaller than 9V, the energy storage unit supplies power to the system, the power management module sends an electric signal to the MCU, the MCU turns off the switch K1, the switch K2 and the switch K4, the switch K3 is turned on, and the standby battery is turned into a power supply state to supply power to the system;
when the system power supply module fails and is powered off, data is not stored in the external storage module, so that the data is lost, and the MCU receives a pulse signal when the power is off and can acquire and recover the lost data when the power is off;
when the system data is transmitted to the external storage module and fails to power off, the data is lost or is lost, the external storage module does not receive the data, no acknowledgement electric signal is transmitted to the MCU, the MCU repeatedly transmits the last transmitted data if the external storage module acknowledgement electric signal is not received in a certain time for transmitting the data to the external storage module, the next data is retransmitted if the external storage module acknowledgement electric signal is received, the external storage module can check the length of the data for the received data, and if the data is detected to be lost or the length is smaller than the storage length, the external storage module can discard the stored data and does not transmit the acknowledgement electric signal to the MCU.
The information acquisition unit 2 comprises an operation switch signal acquisition module, a sensor signal acquisition module, an instrument, a motor controller, a motor and a CAN bus network, wherein the input end of the operation switch signal acquisition module is connected with the output end of the sensor power supply module, the output end of the operation switch signal acquisition module is connected with the switching value input end of the MCU, the input end of the sensor signal acquisition module is connected with the output end of the sensor power supply module, the input end of the sensor signal acquisition module is connected with the second end of the switch K4, the output end of the sensor signal acquisition module is connected with the frequency input end of the MCU, the output end of the sensor signal acquisition module is connected with the voltage input end of the MCU, the output end of the instrument is connected with the input end of the CAN bus network in a bidirectional manner, the output end of the motor controller is connected with the input end of the CAN bus network in a bidirectional manner, and the output end of the CAN bus network is connected with the drive controller input end of the MCU in a bidirectional manner.
As shown in fig. 2, an encryption chip in the intelligent network controller encrypts and decrypts information collected in the system, and the encryption and decryption method of the encryption chip is as follows:
s1: the MCU sends the information acquired in the system, the hardware information of the MCU and the electric signal to the encryption chip through an SPI protocol;
s2: the encryption chip encrypts hardware information of the MCU to generate a first key;
s3: the encryption chip receives the information, randomly generates a character string, and adds the character string at the tail end of the data information;
s4: the encryption chip encrypts the new data information through a hash function to generate once hash encryption data;
s5: carrying out hash encryption on the primary hash encryption data by using a first key to generate secondary hash encryption data;
s6: the encryption chip encrypts storage address information of the secondary hash encryption data in the external storage module by using the first key to generate a second key;
s7: the first key and the second key are stored in an encryption chip, and the secondary hash encryption data is stored in an external storage module according to the information of the second key
S8: the decryption method is that the correct hardware information of the MCU is sent to the encryption chip to obtain a second key, the data is decrypted by the second key to obtain the storage position of the data in the external storage module, and the encryption process is only needed to be reversely deduced after the storage position of the data is obtained.
The remote monitoring unit 4 comprises a management platform, a network communication module and a WIFI communication module. The first output end of the management platform is in bidirectional connection with the output end of the network communication module, the input end of the network communication module is in bidirectional connection with the network output end of the MCU, the second output end of the management platform is in bidirectional connection with the output end of the WIFI communication module, and the input end of the WIFI communication module is in bidirectional connection with the WIFI output end of the MCU.
The drive unit 5 includes an actuator, a high-side PWM output module, and a switching output module. The output end of the high-side PWM output module is connected with the first input end of the executing mechanism, the input end of the high-side PWM output module is connected with the PWM output end of the MCU, the output end of the switch output module is connected with the second input end of the executing mechanism, and the input end of the switch output module is connected with the switch output end of the MCU.
The power supply management module, the standby lithium battery, the sensor power supply module and a system power supply module outside the controller jointly form a power supply unit of the intelligent network connection control system, the system power supply (which can be a power supply device such as a lead-acid storage battery, a lithium battery or a DC-DC converter) is connected with the power supply management module inside the controller, and the power supply management module has high and low voltage protection and an automatic standby dormancy function and supplies power to the MCU; the standby lithium battery is connected with the power management module in the controller, and provides a working power supply when the power supply of the system is stopped, and is used for storing important data and sending system positioning and real-time state data to the management platform at regular time, and when the external power supply works, the standby power supply is converted into a charging state; the sensor power supply module provides a stable direct current power supply for an operation switch signal acquisition module and a sensor signal acquisition module outside the system, and the working stability and the information storage safety of the system can be effectively protected by adopting a dual-power supply design.
An intelligent network controller for an industrial vehicle, as shown in fig. 3, comprising: the intelligent control system comprises a control unit 3, a power management module, a sensor power supply module, a standby lithium battery, a switch K1, a switch K2, a switch K3, a network communication module, a WIFI communication module, a high-side PWM output module and a switch output module, wherein the second end of the switch K1 is connected with the input end of the power management module, the first end of the switch K2 is connected with the input end of the standby lithium battery, the second end of the switch K2 is connected with the first power supply output end of the power management module, the first end of the switch K3 is connected with the output end of the standby lithium battery, the second power supply output end of the switch K3 is connected with the standby input end of the power management module, the third power supply output end of the power management module is connected with the power supply input end of the control unit 3, the input end of the network communication module is connected with the network output end of the control unit 3 in a bidirectional manner, the input end of the WIFI communication module is connected with the WIFI output end of the control unit 3 in a bidirectional manner, the input end of the high-side PWM output module is connected with the output end of the control unit 3, and the input end of the switch output module is connected with the PWM output end of the control unit 3.
The debugging/configuration module is communicated with the MCU by SPI (Serial Peripheral Interface) and is used for debugging MCU software and configuring a system.
The operation switch signal collected by the operation switch signal collection module mainly comprises switch input signals (such as running direction, seat pressure, operation brake, valve rod operation of a working device and the like) of various reaction operation actions in the control system, the sensor signal collected by the sensor signal collection module mainly comprises analog input signals (such as accelerator pedal angle, running speed, hydraulic system working pressure, steering wheel angle, lifting height of the working device, inclination angle and the like) of the reaction operation actions in the control system, and the two signals are collected through a switch input module, a frequency input module, a voltage input module I (0 to 32V) and a voltage input module II (0 to 10V) in the controller and then are input into a digital input module and an A/D converter in the MCU for digital signal conversion. The instrument and motor controller collect the key information such as the operation parameter, fault, etc. of the whole vehicle electric control system, and the information is transmitted to the MCU interface controller through the CAN bus network and the driving controller in the intelligent network controller 6.
The MCU receives and processes signals input by the information acquisition unit 2, carries out logic operation according to a program and an algorithm preset by software, and sends a control instruction to carry out function control on an external control system. The control of the distributed control system equipment is realized through an interface controller of the MCU, a driving controller of the control unit 3 and an external CAN bus network; the control of the actuating mechanism is realized by an output control unit of the MCU, a high-side PWM output module of the control unit 3 and a switch output module to drive the actuating mechanism (a mechanical and electronic integrated control assembly such as a gear shift control valve, a brake valve, a hydraulic electric proportional valve and the like). The MCU receives and processes the information and the electric signal, and sends the information and the electric signal to the encryption chip through the SPI, and the encryption chip uniformly converts the information into 0/1 binary signal; inserting a plurality of different positions into 0/1 of the converted binary signal, changing the insertion position of the binary signal by the encryption chip after one cycle period, and recording the positions of the 0/1 insertion at different times by the encryption chip; the encryption chip marks and distinguishes the adding time before the binary signal with different time; converting the binary signal after adding the time into a hexadecimal signal, and storing the hexadecimal signal in an external storage module; the MCU decrypts the information in the external storage module, and only the steps are needed to be reversely deduced. This ensures the security of the information.
The MCU in the information acquisition unit 3 and the driving unit 5 acquires data and sent control instruction information, the data and the sent control instruction information are stored in the external module after being encrypted by the encryption chip, and the MCU reads the encrypted data in the external storage module and sends the encrypted data to the management platform through the network communication module or the WIFI communication module; the network communication module supports a 4G/5G communication network, the WIFI communication module and the network communication module can be switched, and any module can be selected as a default communication module through system configuration. The management platform and the receiving control unit 3 can send remote control instructions, and the remote control of the execution and post-and bus network equipment can be realized through the intelligent network controller 6.
The system integrates information acquisition, data storage, data encryption, drive control, network communication, bus communication and other functional modules, and after information transmitted by each control unit of the Internet of vehicles control system is acquired, the information is uniformly stored, packaged and encrypted in the intelligent Internet of vehicles controller, and then the information is transmitted to the background through the wireless communication module in the controller for monitoring and management, so that the accuracy and the safety of information transmission between the intelligent Internet of vehicles controller and the Internet of vehicles background are effectively ensured, and the working stability and the information storage safety of the system can be effectively protected by adopting a dual-power design.
It should be understood that the examples are only for illustrating the present invention and are not intended to limit the scope of the present invention. Further, it is understood that various changes and modifications may be made by those skilled in the art after reading the teachings of the present invention, and such equivalents are intended to fall within the scope of the claims appended hereto.
Claims (9)
1. An intelligent network connection remote monitoring system for an industrial vehicle, comprising:
the power supply unit supplies power to the whole remote monitoring system, and when the power supply system fails, the power supply unit is switched to a standby power supply and checks the integrity of the transmitted data; when the system power supply module fails and is powered off, data are not stored in the external storage module, so that the data are lost, the MCU receives a pulse signal when the power is off, and the lost data are collected again and recovered; when the system data is transmitted to the external storage module and fails and power is cut off, the data is lost or missing, the external storage module does not receive the data, a confirmation electric signal is not transmitted to the MCU, the MCU repeatedly transmits the last transmitted data if the confirmation electric signal of the external storage module is not received in a certain time for transmitting the data to the external storage module, the next data is retransmitted if the confirmation electric signal of the external storage module is received, the external storage module checks the length of the data according to the received data, and if the data missing or the length is detected to be smaller than the storage length, the external storage module gives up storing the data and does not transmit the confirmation electric signal to the MCU;
the information acquisition unit is used for transmitting the acquired switching value input signals, sensor signals and operation parameters of the electrical control system as well as fault information to the intelligent network controller;
the control unit processes the received data information through the MCU and sends a control instruction to control the functions of the external control system;
the remote monitoring unit is used for receiving the monitoring information sent by the intelligent network connection controller and sending a remote control instruction;
and the driving unit is used for controlling equipment and an actuating mechanism of the distributed control system.
2. The intelligent network remote monitoring system of the industrial vehicle according to claim 1, wherein the power supply unit comprises a system power supply module, a power management module, a sensor power supply module, a standby lithium battery and a switch K1, a switch K2, a switch K3 and a switch K4;
a switch K1 is arranged between the system power supply module and the power supply management module, a first end of the switch K1 is connected with a power supply output end of the system power supply module, a second end of the switch K1 is connected with an input end of the power supply management module, and a voltage detector is arranged at the input end of the power supply management module;
a switch K2 and a switch K3 are arranged between the standby lithium battery and the power management module, a first end of the switch K2 is connected with an input end of the standby lithium battery, a second end of the switch K2 is connected with a first power supply output end of the power management module, a first end of the switch K3 is connected with an output end of the standby lithium battery, a second end of the switch K3 is connected with a standby input end of the power management module, when the standby lithium battery is in a charging state, the switch K2 is communicated, the switch K3 is disconnected, and when the standby lithium battery is in a power supply state, the switch K2 is disconnected, and the switch K3 is communicated;
the second power supply output end of the power supply management module is connected with the input end of the sensor power supply module, the third power supply output end of the power supply management module is connected with the power supply input end of the MCU, and an energy storage unit is arranged in the power supply management module;
a switch K4 is arranged between the system power supply module and the information acquisition unit, a first end of the switch K4 is connected with a sensor output end of the system power supply module, and a second end of the switch K4 is connected with a second power supply input end of the information acquisition unit;
the output end of the sensor power supply module is connected with the first power supply input end of the information acquisition unit.
3. The intelligent network remote monitoring system of the industrial vehicle according to claim 1, wherein the control unit comprises a debugging/configuration module, a driving controller, a single chip microcomputer MCU, an encryption chip and an external storage module, wherein the output end of the debugging/configuration module is in bidirectional connection with the debugging input end of the single chip microcomputer MCU, the output end of the driving controller is connected with the input end of an interface controller of the single chip microcomputer MCU, the information output end of the single chip microcomputer MCU is connected with the input end of the encryption chip, the output end of the encryption chip is connected with the input end of the external storage module, and the output end of the external storage module is connected with the information input end of the single chip microcomputer MCU.
4. An intelligent network connection remote monitoring system for industrial vehicles according to claim 2 or 3, characterized in that the main and standby power switching method is adopted:
when the system power supply module supplies power, the switch K1 is conducted to output 32V voltage to the power supply management module, the power supply management module outputs 3.3V voltage to the MCU to output 9V voltage to the sensor, and the switch four-conduction system power supply module transmits 9V voltage to the sensor signal acquisition module;
when a voltage detector in the power management module detects that the voltage of the input end of the power management module is 30-35V, an electric signal is sent to the MCU to control the switch K2 to be on and the switch K3 to be off, and the power management module outputs 32V to charge the standby lithium battery;
when the system power supply module fails and is powered off, the voltage detector cannot detect the voltage or the voltage is smaller than 9V, the energy storage unit supplies power to the system, the power management module sends an electric signal to the MCU, the MCU turns off the switch K1, the switch K2 and the switch K4, the switch K3 is turned on, and the standby battery is turned into a power supply state to supply power to the system;
when the system power supply module fails and is powered off, the data is not stored in the external storage module, so that the data is lost, the MCU receives a pulse signal when the power is off, and the lost data is collected again and recovered.
5. The intelligent network remote monitoring system of claim 2, wherein the information acquisition unit comprises an operation switch signal acquisition module, a sensor signal acquisition module, an instrument, a motor controller, a motor and a CAN bus network, wherein the input end of the operation switch signal acquisition module is connected with the output end of the sensor power supply module, the output end of the operation switch signal acquisition module is connected with the switching value input end of the MCU, the input end of the sensor signal acquisition module is connected with the output end of the sensor power supply module, the input end of the sensor signal acquisition module is connected with the second end of the switch K4, the output end of the sensor signal acquisition module is connected with the frequency input end of the MCU, the output end of the sensor signal acquisition module is connected with the voltage input end of the MCU, the output end of the instrument is connected with the input end of the CAN bus network, the output end of the controller of the motor is connected with the output end of the CAN bus network, and the output end of the CAN bus is connected with the input end of the MCU.
6. The intelligent network remote monitoring system of industrial vehicle according to claim 1, wherein the encryption chip in the control unit encrypts and decrypts the information collected in the system, and the encryption and decryption method of the encryption chip is as follows:
s1: the MCU sends the information acquired in the system, the hardware information of the MCU and the electric signal to the encryption chip through an SPI protocol;
s2: the encryption chip encrypts hardware information of the MCU to generate a first key;
s3: the encryption chip receives the information, randomly generates a character string, and adds the character string at the tail end of the data information;
s4: the encryption chip encrypts the new data information through a hash function to generate once hash encryption data;
s5: carrying out hash encryption on the primary hash encryption data by using a first key to generate secondary hash encryption data;
s6: the encryption chip encrypts storage address information of the secondary hash encryption data in the external storage module by using the first key to generate a second key;
s7: the first key and the second key are stored in an encryption chip, and the secondary hash encryption data is stored in an external storage module according to the information of the second key
S8: the decryption method is that the correct hardware information of the MCU is sent to the encryption chip to obtain a second key, the data is decrypted by the second key to obtain the storage position of the data in the external storage module, and the encryption process is only needed to be reversely deduced after the storage position of the data is obtained.
7. The intelligent network remote monitoring system of claim 1, wherein the remote monitoring unit comprises a management platform, a network communication module and a WIFI communication module, the first output end of the management platform is in bidirectional connection with the output end of the network communication module, the input end of the network communication module is in bidirectional connection with the network output end of the MCU, the second output end of the management platform is in bidirectional connection with the output end of the WIFI communication module, and the input end of the WIFI communication module is in bidirectional connection with the WIFI output end of the MCU.
8. The intelligent network remote monitoring system of the industrial vehicle according to claim 1, wherein the driving unit comprises an executing mechanism, a high-side PWM output module and a switch output module, the output end of the high-side PWM output module is connected with the input end of the executing mechanism, the input end of the high-side PWM output module is connected with the PWM output end of the MCU, the output end of the switch output module is connected with the input end II of the executing mechanism, and the input end of the switch output module is connected with the switch output end of the MCU.
9. An intelligent network controller for industrial vehicles according to claim 2 or 3 or 5 or 7 or 8 of an intelligent network remote monitoring system for industrial vehicles, comprising: the device comprises a control unit, a power management module, a sensor power supply module, a standby lithium battery, a switch K1, a switch K2, a switch K3, a network communication module, a WIFI communication module, a high-side PWM output module and a switch output module, wherein the second end of the switch K1 is connected with the input end of the power management module, the first end of the switch K2 is connected with the first power supply output end of the power management module, the first end of the switch K3 is connected with the output end of the standby lithium battery, the second end of the switch K3 is connected with the standby input end of the power management module, the second power supply output end of the power management module is connected with the input end of the sensor power supply module, the third power supply output end of the power management module is connected with the power supply input end of the control unit, the input end of the network communication module is connected with the network output end of the control unit in a bidirectional manner, the input end of the WIFI communication module is connected with the output end of the control unit, and the high-side power supply output end of the switch is connected with the input end of the PWM output module.
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