CN111092658A - Device and method for monitoring information of multi-motor cluster system - Google Patents
Device and method for monitoring information of multi-motor cluster system Download PDFInfo
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Abstract
The invention discloses a device and a method for monitoring information of a multi-motor cluster system, wherein the device for monitoring information comprises a multi-motor comprehensive control unit, a plurality of motor control units and a human-computer interaction system; the main motor control unit is used for receiving instruction information of the multi-motor comprehensive control unit and transmitting real-time information of the equipment of the motors to the multi-motor comprehensive control unit; the multi-motor integrated control unit is used for receiving a near-end operation instruction or a far-end control instruction, issuing instruction information to the multiple motor control units, and issuing real-time information of the equipment of the multiple motors to a man-machine conversation system for monitoring and displaying. The monitoring device optimizes the processing flow of the monitoring information and improves the processing speed of the monitoring information.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a device and a method for monitoring information of a multi-motor cluster system.
Background
The multi-motor cluster system is widely applied to distributed equipment occasions and high-power driving occasions, and along with the improvement of the industrial automation level, the requirement on the monitoring level of the multi-motor cluster system is higher and higher. The monitoring to the equipment not only can realize the monitoring to the working condition equipment, but also is more favorable for realizing the control to the industrial system through automatic management and control so as to realize the management to the industrial process, thereby improving the production efficiency and reducing the fault risk.
In the prior art, monitoring of a multi-motor cluster system is common, but the monitoring level is not high, and the main problems are that the acquisition rate of monitoring information is slow, and the fundamental reason is that the acquisition of the monitoring information and the transmission of control information of the multi-motor system simultaneously occupy a communication link and the operation time of a digital processing chip, so that in order to realize high-performance multi-motor control, the existing system usually sacrifices the transmission rate of the monitoring information, so that the monitoring information delay is large, the real-time running state of equipment cannot be reflected in time, and the dynamic performance of industrial automatic control is influenced.
Therefore, the speed of monitoring information processing in the multi-motor complex system is improved, and the optimization of the monitoring information processing flow is an urgent problem to be solved in the multi-motor cluster system.
Disclosure of Invention
Aiming at the defects of the prior art, the application provides a device and a method for monitoring the information of a multi-motor cluster system, which improve the speed of transmitting control commands by the network and optimize the processing flow of monitoring information.
The invention provides a device for monitoring information of a multi-motor cluster system, which comprises a multi-motor comprehensive control unit, a plurality of motor control units and a human-computer interaction system;
one of the motor control units is set as a master motor control unit, the rest are set as slave motor control units, and the motor control units are connected in series to form a first communication network;
the multi-motor integrated control unit is connected with a first communication network formed by connecting a plurality of motor control units in series to form a second communication network and is connected with a man-machine conversation system.
The main motor control unit is used for receiving instruction information of the multi-motor comprehensive control unit and transmitting real-time information of the equipment of the motors to the multi-motor comprehensive control unit;
the multi-motor integrated control unit is used for receiving a near-end operation instruction or a far-end control instruction, issuing instruction information to the multiple motor control units, and issuing real-time information of the equipment of the multiple motors to a man-machine conversation system for monitoring and displaying.
Preferably, the master motor control unit is responsible for information monitoring and management of each slave motor in a first communication network and for information transfer with the multi-motor integrated control unit in a second communication network.
Preferably, the real-time equipment information of the motors mainly comprises equipment information and running information of each motor;
the motor device information and the operation information include: the motor control method comprises the following steps of (1) motor equipment number, motor speed command value, speed feedback value, torque command value, torque feedback value, active current feedback value, reactive current feedback value, input voltage, input current, output voltage, output current, implementation power and motor controller fault information in the multi-motor mode;
preferably, communication devices are arranged in the multi-motor integrated control unit and the plurality of motor control units, each communication device comprises an FPGA digital processing chip, two groups of optical fiber units and a DSP, and the FPGA digital processing chip is used for processing transmitted information; the DSP is used for reading the data information in the buffer unit;
the two groups of optical fiber units are respectively a first optical fiber unit and a second optical fiber unit; the first optical fiber unit comprises a transmitting optical fiber and a receiving optical fiber and is used for communicating with a superior drive control unit; the second optical fiber unit comprises a transmitting optical fiber and a receiving optical fiber and is used for communicating with the lower-level drive control unit;
the receiving optical fiber of the first optical fiber unit receives the communication pulse sent by the superior drive control unit, outputs the communication pulse to the sending optical fiber of the second optical fiber unit through the FPGA digital processing chip, and sends the communication pulse to the inferior drive control unit;
and the receiving optical fiber of the second optical fiber unit receives the communication pulse sent by the lower-level drive control unit, outputs the communication pulse to the sending optical fiber of the first optical fiber unit through the FPGA digital processing chip, and sends the communication pulse to the upper-level drive control unit.
Preferably, the FPGA digital processing chip comprises a decoding unit, an identification unit, a cache unit and an encoding unit;
the decoding unit is used for decoding the communication pulse into parallel data information;
the identification unit is used for comparing whether the destination equipment number is consistent with the own equipment number;
the cache unit is used for storing the information transmitted by the identification unit;
the encoding unit is used for encoding the data in the buffer unit.
Preferably, the operation mode of the communication device includes two modes, i.e., direct transmission without processing information and retransmission with processing information, and one of the two operation modes may be selected or may be performed simultaneously.
The invention also provides a method for monitoring the information of the multi-motor cluster, which is characterized by comprising the following steps:
the multi-motor integrated control unit sends a request command of monitoring information to the main motor control unit;
the solicitation command comprises a local equipment number, a receiving unit equipment number, a solicited information frame number and a solicited information parameter number; the receiving unit device number is set as a main motor control unit device number;
the main motor control unit receives an information acquisition command of the multi-motor integrated control unit, extracts information of the acquisition command, provides corresponding return information according to the information of the acquisition command, encodes the return information and sends the encoded return information to the multi-motor integrated control unit;
the code comprises a local equipment number, a received unit equipment number, an information frame number, an information parameter number and monitoring information; the equipment number of the receiving unit is set as the equipment number of the multi-motor integrated control unit;
the multi-motor integrated control unit receives the information returned by the main motor control unit, decodes the information and extracts monitoring information;
and the multi-motor comprehensive control unit sends the returned information to the touch screen through the communication interface for displaying.
Preferably, the method further comprises the step of requesting information from the slave motor control unit by the master motor control unit when the master motor control unit does not have corresponding return information.
Preferably, the step of requesting information from the slave motor control unit by the master motor control unit comprises the steps of:
the master motor control unit sends a request command of monitoring information to the slave motor control unit;
the solicitation command comprises a local equipment number, a receiving unit equipment number, a solicited information frame number and a solicited information parameter number;
receiving an information acquisition command of the main motor control unit from the motor control unit, and providing corresponding return information from the motor control unit according to the information of the acquisition command;
the slave motor control unit encodes the return information and sends the encoded return information to the master motor control unit, wherein the encoding comprises a local unit equipment number, a received unit equipment number, an information frame number, an information parameter number and monitoring information; the receiving unit device number is set as the device number of the main motor control unit;
the main motor control unit receives the information returned from the motor control unit, decodes the information, and extracts the monitoring information.
Preferably, the information transmission between the multi-motor integrated control unit and the main motor control unit and the information transmission between the main motor control unit and the slave motor control unit are realized through communication devices arranged in the multi-motor integrated control unit and the slave motor control unit.
Preferably, the communication between the master motor control unit and the slave motor control units includes receiving and distributing superior information to the subordinate, receiving and distributing subordinate information to the superior, and the method for receiving and distributing superior information to the subordinate includes:
the receiving optical fiber of the first optical fiber unit receives the communication information sent by the superior driving control unit, on one hand, the communication information is directly output to the sending optical fiber of the second optical fiber unit through the optical fiber in the FPGA digital processing chip and is sent to the subordinate variable frequency driving unit; the information identification unit compares whether the equipment number of the target equipment is consistent with the equipment number of the local equipment, if so, the parallel data information is stored in the buffer unit, and if not, the parallel data information is not stored in the buffer unit; the receiving optical fiber of the second optical fiber unit receives the communication information sent by the lower-level drive control unit;
on the other hand, the received information is decoded into parallel data information by a decoding unit in the FPGA digital processing chip, and the parallel data information is transmitted to an information identification unit; the data information comprises the equipment number of the destination equipment, the equipment number of the sending equipment, the frame number, the parameter number and the communication content; the information identification unit compares whether the equipment number of the target equipment is consistent with the equipment number of the local equipment, if so, the parallel data information is stored in the buffer unit, and if not, the parallel data information is not stored in the buffer unit;
the DSP reads the data in the buffer unit;
the method for receiving the lower information and issuing the lower information to the upper level comprises the following steps:
the receiving optical fiber of the second optical fiber unit receives the communication information sent by the lower-level driving control unit, on one hand, the communication information is directly output to the sending optical fiber of the first optical fiber unit through the optical fiber in the FPGA digital processing chip and is sent to the upper-level variable frequency driving unit;
on the other hand, the received information is decoded into parallel data information by a decoding unit in the FPGA digital processing chip, and the parallel data information is transmitted to an information identification unit; the information identification unit compares whether the equipment number of the target equipment is consistent with the equipment number of the local equipment, if so, the parallel data is stored in the buffer unit, and if not, the parallel data is not stored in the buffer unit;
the DSP reads the data in the buffer unit.
Has the advantages that: the mode that the multi-motor integrated control unit and the host control unit transmit monitoring information and the host control unit and the slave control unit transmit monitoring information simplifies the mechanism of priority competition of a communication network, shortens the network communication period formed by the host control unit and the slave control unit, improves the speed of transmitting control commands by the network, perfects the monitoring function on the premise of ensuring the motor control performance and improves the efficiency of acquiring monitoring information.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. The present invention will be described in detail below with reference to the accompanying drawings and examples.
FIG. 1 is a block diagram of an information monitoring apparatus of a multi-motor cluster system according to an embodiment of the present invention;
FIG. 2 is a diagram illustrating a hardware configuration of a communication device according to an embodiment of the present invention;
FIG. 3 is a flow chart of a method for monitoring information in a multi-motor cluster system according to an embodiment of the present invention;
fig. 4 is a flowchart illustrating an embodiment of a master motor control unit monitoring information obtaining process.
Detailed Description
In order to make the implementation objects, technical solutions and advantages of the present invention more clear, the following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings.
The embodiment of the invention provides a solution for a multi-motor cluster system information monitoring device, and fig. 1 shows a structure diagram of the multi-motor cluster system information monitoring device, wherein the information monitoring device comprises a multi-motor comprehensive control unit, a plurality of motor control units and a man-machine interaction system; one of the motor control units is set as a master motor control unit, and the rest are set as slave motor control units, and the motor control units are connected in series to form a first communication network; the multi-motor integrated control unit is connected with a first communication network formed by connecting the multi-motor integrated control unit in series to form a second communication network, and is used for receiving instruction information of the multi-motor integrated control unit and transmitting real-time information of equipment of the multi-motor integrated control unit to the multi-motor integrated control unit through a main motor control unit connected with a man-machine conversation system; the multi-motor integrated control unit is used for receiving a near-end operation instruction or a far-end control instruction, issuing instruction information to the multiple motor control units, and issuing real-time information of the equipment of the multiple motors to the man-machine conversation system for monitoring and displaying. The motor device information and the operation information include: the motor device number, the motor speed command value, the speed feedback value, the torque command value, the torque feedback value, the active current feedback value, the reactive current feedback value, the input voltage, the input current, the output voltage, the output current, the implementation power and the motor controller fault information in the multi-motor mode.
Specifically, the master motor control unit is responsible for monitoring and managing information of each slave motor in a first communication network, and is responsible for information transmission with the multi-motor integrated control unit in a second communication network. The human-computer interaction system can be a touch screen or a computer. The multi-machine driving integrated control system is interconnected with the main motor control unit through an optical fiber communication link, and is also interconnected with the touch screen through a 485 communication interface.
Further, a communication device is arranged in each of the multi-motor integrated control unit and the plurality of motor control units, as shown in a hardware structure diagram of the communication device in fig. 2. The communication device comprises an FPGA digital processing chip and two groups of optical fiber units, wherein the FPGA digital processing chip is used for processing transmitted information; the two groups of optical fiber units are respectively a first optical fiber unit and a second optical fiber unit; the first optical fiber unit comprises a transmitting optical fiber and a receiving optical fiber and is used for communicating with a superior drive control unit; the second optical fiber unit comprises a transmitting optical fiber and a receiving optical fiber and is used for communicating with the lower-level drive control unit;
the receiving optical fiber of the first optical fiber unit receives the communication pulse sent by the superior drive control unit, outputs the communication pulse to the sending optical fiber of the second optical fiber unit through the FPGA digital processing chip, and sends the communication pulse to the inferior drive control unit;
and the receiving optical fiber of the second optical fiber unit receives the communication pulse sent by the lower-level drive control unit, outputs the communication pulse to the sending optical fiber of the first optical fiber unit through the FPGA digital processing chip, and sends the communication pulse to the upper-level drive control unit.
The FPGA digital processing chip comprises a decoding unit, an identification unit, a cache unit and an encoding unit;
the decoding unit is used for decoding the communication pulse into parallel data information; the identification unit is used for comparing whether the destination equipment number is consistent with the own equipment number; the cache unit is used for storing the information transmitted by the identification unit; the encoding unit is used for encoding the data in the buffer unit.
Specifically, the receiving optical fiber of the first optical fiber unit receives the communication pulse sent by the superior driving control unit, the communication pulse is decoded by the decoding unit in the FPGA digital processing chip, the information identification unit in the FPGA digital processing chip compares whether the device number of the destination device is consistent with the device number of the device, if so, 16-bit data is stored in the buffer unit, and if not, the 16-bit parallel data information is abandoned to be stored in the buffer unit.
And the receiving optical fiber of the second optical fiber unit receives the communication pulse sent by the lower-level drive control unit, the information identification unit in the FPGA digital processing chip compares whether the equipment number of the target equipment is consistent with the equipment number of the FPGA digital processing chip, if so, 32-bit data is stored in the buffer unit, and if not, the 32-bit parallel data information is abandoned to be stored in the buffer unit.
The DSP reads the data in the buffer unit, the parallel information to be sent is transmitted to the buffer unit, the buffer unit is transmitted to the encoding unit, the parallel data is encoded, and the encoded data is sent to the upper and lower variable frequency driving units through the sending optical fiber of the first optical fiber unit or the sending optical fiber of the second optical fiber unit.
Furthermore, the working mode of the communication device comprises two working modes of directly transmitting the unprocessed information and transmitting the processed information, wherein one of the two working modes can be selected, and the two working modes can be carried out simultaneously.
Specifically, the processing information retransmission mode: the receiving optical fiber of the first optical fiber unit receives communication pulses sent by the superior driving control unit, the communication pulses are decoded by a decoding unit in the FPGA digital processing chip, an information identification unit in the FPGA digital processing chip compares whether the equipment number of the target equipment is consistent with the equipment number of the local equipment, if so, 16-bit data is stored in a buffer unit, and if not, 16-bit parallel data information is abandoned to be stored in the buffer unit. And the receiving optical fiber of the second optical fiber unit receives the communication pulse sent by the lower-level drive control unit, the information identification unit in the FPGA digital processing chip compares whether the equipment number of the target equipment is consistent with the equipment number of the FPGA digital processing chip, if so, 32-bit data is stored in the buffer unit, and if not, the 32-bit parallel data information is abandoned to be stored in the buffer unit.
The DSP reads the data in the buffer unit, the parallel information to be sent is transmitted to the buffer unit, the buffer unit is transmitted to the encoding unit, the parallel data is encoded, and the encoded data is sent to the upper and lower drive control units through the sending optical fiber of the first optical fiber unit or the sending optical fiber of the second optical fiber unit.
The working mode of direct information transfer is not processed: and the other two connecting circuits, namely the receiving optical fiber of the first optical fiber unit receives the communication pulse sent by the superior drive control unit, the communication pulse is immediately output to the sending optical fiber of the second optical fiber unit through a direct connecting wire in the FPGA digital processing chip, and the communication pulse is sent to the subordinate drive control unit. And the receiving optical fiber of the second optical fiber unit receives the communication pulse sent by the lower-level drive control unit, immediately outputs the communication pulse to the sending optical fiber of the first optical fiber unit through a direct connection wire in the FPGA digital processing chip, and sends the communication pulse to the upper-level drive control unit. The two connection modes are directly connected through the FPGA for transmission, so that delay hardly exists, and the transmission speed is greatly improved.
Further, if the device is set as a slave, the operation mode of the slave communication apparatus may be set so that only the received lower device information is immediately transmitted to the upper device, and the processing operation of the information is not performed.
The format of the information requesting command adopts 32-bit serial communication coding, and each bit of information is respectively a start bit, a local equipment number, a receiving unit equipment number, an information requesting equipment number, a frame number of information requesting, a parameter number of information requesting, a control word and a stop bit; the format of the returned information adopts 32-bit serial communication coding, and each bit of information is respectively a start bit, a local equipment number, a received unit equipment number, an information frame number, an information parameter number, monitoring information and a stop bit.
Fig. 3 is a flow chart of a method for monitoring information of a multi-motor cluster, as shown in fig. 3, the method comprising the steps of:
step 100: the multi-motor integrated control unit sends a request command of monitoring information to the main motor control unit;
the solicitation command comprises a local equipment number, a receiving unit equipment number, a solicited information frame number and a solicited information parameter number; the receiving unit device number is set as a main motor control unit device number;
step 200: the main motor control unit receives an information acquisition command of the multi-motor integrated control unit, extracts information of the acquisition command, provides corresponding return information according to the information of the acquisition command, encodes the return information and sends the encoded return information to the multi-motor integrated control unit;
step 300: the code comprises a local equipment number, a received unit equipment number, an information frame number, an information parameter number and monitoring information; the equipment number of the receiving unit is set as the equipment number of the multi-motor integrated control unit;
step 400: the multi-motor integrated control unit receives the information returned by the main motor control unit, decodes the information and extracts monitoring information;
step 500: and the multi-motor comprehensive control unit sends the returned information to the touch screen through the communication interface for displaying.
In the scheme of the embodiment, the multi-motor integrated control system does not need to ask for monitoring information from each motor device, and only asks for monitoring information from the main motor control system, so that the information acquisition process is simplified, resources of a communication network between the main motor control unit and the slave motor control units are prevented from being occupied by the multi-motor integrated control units, and the time for transmitting control instructions between the main motor control unit and the slave motor control units is saved.
Further, as shown in fig. 4, the method further includes a main computer control unit monitoring information obtaining process:
step 600: when the main motor control unit does not have corresponding return information, the main motor control unit asks for the information from the slave motor control unit.
That is, when the master motor control unit does not store information required by the multi-motor integrated control unit, the master motor needs to ask for the information from the slave motor control unit.
The method for requesting information from the slave motor control unit by the master motor control unit comprises the following steps:
step 601: the master motor control unit sends a request command of monitoring information to the slave motor control unit;
the solicitation command comprises a local equipment number, a receiving unit equipment number, a solicited information frame number and a solicited information parameter number;
step 602: receiving an information acquisition command of the main motor control unit from the motor control unit, and providing corresponding return information from the motor control unit according to the information of the acquisition command;
step 603: the slave motor control unit encodes the return information and sends the encoded return information to the master motor control unit, wherein the encoding comprises a local unit equipment number, a received unit equipment number, an information frame number, an information parameter number and monitoring information; the receiving unit device number is set as the device number of the main motor control unit;
step 604: the main motor control unit receives the information returned from the motor control unit, decodes the information, and extracts the monitoring information.
The information transmission between the multi-motor integrated control unit and the main motor control unit and the information transmission between the main motor control unit and the slave motor control unit are realized through communication devices arranged in the multi-motor integrated control unit and the slave motor control unit.
The communication of the communication device between the master motor control unit and the slave motor control unit comprises two parts of receiving superior information and issuing to a subordinate, receiving subordinate information and issuing to a superior, and the method for receiving superior information and issuing to a subordinate comprises the following steps:
the receiving optical fiber of the first optical fiber unit receives the communication information sent by the superior driving control unit, on one hand, the communication information is directly output to the sending optical fiber of the second optical fiber unit through the optical fiber in the FPGA digital processing chip and is sent to the subordinate variable frequency driving unit; the information identification unit compares whether the equipment number of the target equipment is consistent with the equipment number of the local equipment, if so, the parallel data information is stored in the buffer unit, and if not, the parallel data information is not stored in the buffer unit; the receiving optical fiber of the second optical fiber unit receives the communication information sent by the lower-level drive control unit;
on the other hand, the received information is decoded into parallel data information by a decoding unit in the FPGA digital processing chip, and the parallel data information is transmitted to an information identification unit; the data information comprises the equipment number of the destination equipment, the equipment number of the sending equipment, the frame number, the parameter number and the communication content; the information identification unit compares whether the equipment number of the target equipment is consistent with the equipment number of the local equipment, if so, the parallel data information is stored in the buffer unit, and if not, the parallel data information is not stored in the buffer unit;
the DSP reads the data in the buffer unit;
the method for receiving the lower information and issuing the lower information to the upper level comprises the following steps:
the receiving optical fiber of the second optical fiber unit receives the communication information sent by the lower-level driving control unit, on one hand, the communication information is directly output to the sending optical fiber of the first optical fiber unit through the optical fiber in the FPGA digital processing chip and is sent to the upper-level variable frequency driving unit;
on the other hand, the received information is decoded into parallel data information by a decoding unit in the FPGA digital processing chip, and the parallel data information is transmitted to an information identification unit; the information identification unit compares whether the equipment number of the target equipment is consistent with the equipment number of the local equipment, if so, the parallel data is stored in the buffer unit, and if not, the parallel data is not stored in the buffer unit;
the DSP reads the data in the buffer unit.
The mode that the multi-motor integrated control unit and the host control unit transmit monitoring information and the host control unit and the slave control unit transmit monitoring information simplifies the mechanism of priority competition of a communication network, shortens the network communication period formed by the host control unit and the slave control unit, improves the efficiency of transmitting control commands by the network, perfects the monitoring function on the premise of ensuring the motor control performance and improves the efficiency of acquiring monitoring information.
Claims (11)
1. The device for monitoring the information of the multi-motor cluster system is characterized by comprising a multi-motor comprehensive control unit, a plurality of motor control units and a man-machine interaction system; wherein the content of the first and second substances,
one of the motor control units is set as a master motor control unit, the rest are set as slave motor control units, and the motor control units are connected in series to form a first communication network;
the multi-motor integrated control unit is connected with a first communication network formed by connecting a plurality of motor control units in series to form a second communication network and is connected with a man-machine conversation system;
the main motor control unit is used for receiving instruction information of the multi-motor comprehensive control unit and transmitting real-time information of the equipment of the motors to the multi-motor comprehensive control unit;
the multi-motor integrated control unit is used for receiving a near-end operation instruction or a far-end control instruction, issuing instruction information to the multiple motor control units, and issuing real-time information of the equipment of the multiple motors to a man-machine conversation system for monitoring and displaying.
2. The apparatus of claim 1, wherein the master computer control unit is responsible for monitoring and managing information of each slave motor in the first communication network, and for information transmission with the multi-motor integrated control unit in the second communication network.
3. The apparatus according to claim 1, wherein the real-time information of the devices of the plurality of motors mainly includes device information and operation information of each motor; the motor equipment information and the operation information include a motor equipment number, a motor speed instruction value, a speed feedback value, a torque instruction value, a torque feedback value, an active current feedback value, a reactive current feedback value, an input voltage, an input current, an output voltage, an output current, implementation power and motor controller fault information in the multi-motor mode.
4. The device for acquiring monitoring information of a multi-motor cluster system according to claim 1, wherein communication devices are provided in the multi-motor integrated control unit and the plurality of motor control units, each communication device comprises an FPGA digital processing chip, two sets of optical fiber units and a DSP, and the FPGA digital processing chip is used for processing transmitted information; the DSP is used for reading the data information in the buffer unit;
the two groups of optical fiber units are respectively a first optical fiber unit and a second optical fiber unit; the first optical fiber unit comprises a transmitting optical fiber and a receiving optical fiber and is used for communicating with a superior drive control unit; the second optical fiber unit comprises a transmitting optical fiber and a receiving optical fiber and is used for communicating with the lower-level drive control unit;
the receiving optical fiber of the first optical fiber unit receives the communication pulse sent by the superior drive control unit, outputs the communication pulse to the sending optical fiber of the second optical fiber unit through the FPGA digital processing chip, and sends the communication pulse to the inferior drive control unit;
and the receiving optical fiber of the second optical fiber unit receives the communication pulse sent by the lower-level drive control unit, outputs the communication pulse to the sending optical fiber of the first optical fiber unit through the FPGA digital processing chip, and sends the communication pulse to the upper-level drive control unit.
5. The device according to claim 4, wherein said FPGA digital processing chip comprises a decoding unit, an identification unit, a cache unit, and an encoding unit;
the decoding unit is used for decoding the communication pulse into parallel data information;
the identification unit is used for comparing whether the destination equipment number is consistent with the own equipment number;
the cache unit is used for storing the information transmitted by the identification unit;
the encoding unit is used for encoding the data in the buffer unit.
6. The apparatus of claim 5, wherein the means for obtaining monitoring information comprises a first computer system,
the working modes of the communication device comprise two modes of directly transmitting the unprocessed information and transmitting the processed information, wherein one of the two working modes can be selected, and the two working modes can be carried out simultaneously.
7. A method for monitoring information of a multi-motor cluster is characterized by comprising the following steps:
the multi-motor integrated control unit sends a request command of monitoring information to the main motor control unit;
the solicitation command comprises a local equipment number, a receiving unit equipment number, a solicited information frame number and a solicited information parameter number; the receiving unit device number is set as a main motor control unit device number;
the main motor control unit receives an information acquisition command of the multi-motor integrated control unit, extracts information of the acquisition command, provides corresponding return information according to the information of the acquisition command, encodes the return information and sends the encoded return information to the multi-motor integrated control unit;
the code comprises a local equipment number, a received unit equipment number, an information frame number, an information parameter number and monitoring information; the equipment number of the receiving unit is set as the equipment number of the multi-motor integrated control unit;
the multi-motor integrated control unit receives the information returned by the main motor control unit, decodes the information and extracts monitoring information;
and the multi-motor comprehensive control unit sends the returned information to the touch screen through the communication interface for displaying.
8. The method of multi-motor fleet information monitoring according to claim 7,
the method further comprises the step that when the main motor control unit does not have corresponding return information, the main motor control unit asks for the information from the slave motor control unit.
9. The method of claim 8 wherein said master motor control unit requesting information from slave motor control units comprises the steps of:
the master motor control unit sends a request command of monitoring information to the slave motor control unit;
the solicitation command comprises a local equipment number, a receiving unit equipment number, a solicited information frame number and a solicited information parameter number;
receiving an information acquisition command of the main motor control unit from the motor control unit, and providing corresponding return information from the motor control unit according to the information of the acquisition command;
the slave motor control unit encodes the return information and sends the encoded return information to the master motor control unit, wherein the encoding comprises a local unit equipment number, a received unit equipment number, an information frame number, an information parameter number and monitoring information; the receiving unit device number is set as the device number of the main motor control unit;
the main motor control unit receives the information returned from the motor control unit, decodes the information, and extracts the monitoring information.
10. The method for multi-motor fleet information monitoring according to any one of claims 7-9,
the information transmission between the multi-motor integrated control unit and the main motor control unit and the information transmission between the main motor control unit and the slave motor control units are realized through communication devices arranged in the multi-motor integrated control unit and the slave motor control units.
11. The method for multi-motor fleet information monitoring according to claim 10,
the communication of the communication device comprises two parts of receiving superior information, issuing the superior information to a subordinate, receiving subordinate information and issuing the subordinate information to the superior, and the method for receiving the superior information and issuing the superior information to the subordinate comprises the following steps:
the receiving optical fiber of the first optical fiber unit receives the communication information sent by the superior driving control unit, on one hand, the communication information is directly output to the sending optical fiber of the second optical fiber unit through the optical fiber in the FPGA digital processing chip and is sent to the subordinate variable frequency driving unit; the information identification unit compares whether the equipment number of the target equipment is consistent with the equipment number of the local equipment, if so, the parallel data information is stored in the buffer unit, and if not, the parallel data information is not stored in the buffer unit; the receiving optical fiber of the second optical fiber unit receives the communication information sent by the lower-level drive control unit;
on the other hand, the received information is decoded into parallel data information by a decoding unit in the FPGA digital processing chip, and the parallel data information is transmitted to an information identification unit; the data information comprises the equipment number of the destination equipment, the equipment number of the sending equipment, the frame number, the parameter number and the communication content; the information identification unit compares whether the equipment number of the target equipment is consistent with the equipment number of the local equipment, if so, the parallel data information is stored in the buffer unit, and if not, the parallel data information is not stored in the buffer unit;
the DSP reads the data in the buffer unit;
the method for receiving the lower information and issuing the lower information to the upper level comprises the following steps:
the receiving optical fiber of the second optical fiber unit receives the communication information sent by the lower-level driving control unit, on one hand, the communication information is directly output to the sending optical fiber of the first optical fiber unit through the optical fiber in the FPGA digital processing chip and is sent to the upper-level variable frequency driving unit;
on the other hand, the received information is decoded into parallel data information by a decoding unit in the FPGA digital processing chip, and the parallel data information is transmitted to an information identification unit; the information identification unit compares whether the equipment number of the target equipment is consistent with the equipment number of the local equipment, if so, the parallel data is stored in the buffer unit, and if not, the parallel data is not stored in the buffer unit;
the DSP reads the data in the buffer unit.
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