阅读说明：本技术 一体化变频塔机控制装置的单总线结构 (Single bus structure of integrated variable-frequency tower crane control device ) 是由 马孝志 程江龙 叶志云 方建飞 楼圣伟 何涛涛 单洪峰 范俊红 于 2020-08-20 设计创作，主要内容包括：本发明公开了一体化变频塔机控制装置的单总线结构,它包括CAN总线(1),CAN总线(1)上连接有黑匣子板(2)、联动台板(3)、涡流控制器(4)、遥控器(5)、起升主控板(6)、回转主控板(7)和变幅主控板(8),黑匣子板(2)、联动台板(3)、涡流控制器(4)、遥控器(5)、起升主控板(6)、回转主控板(7)和变幅主控板(8)与CAN总线(1)总线之间均连接有CAN隔离收发器(9)。本发明不仅能够消除多电源相互干扰,提高通讯可靠性,还具有通讯稳定性好和通讯准确性好的优点。(The invention discloses a single-bus structure of an integrated variable-frequency tower crane control device, which comprises a CAN bus (1), wherein the CAN bus (1) is connected with a black box board (2), a linkage bedplate (3), a vortex controller (4), a remote controller (5), a lifting main control board (6), a rotary main control board (7) and an amplitude-variable main control board (8), and CAN isolation transceivers (9) are respectively connected between the black box board (2), the linkage bedplate (3), the vortex controller (4), the remote controller (5), the lifting main control board (6), the rotary main control board (7) and the amplitude-variable main control board (8) and the CAN bus (1). The invention not only can eliminate the mutual interference of multiple power supplies and improve the communication reliability, but also has the advantages of good communication stability and good communication accuracy.)

1. Single bus structure of integration frequency conversion tower machine controlling means, its characterized in that: the intelligent control system comprises a CAN bus (1), wherein a black box board (2), a linkage bedplate (3), a vortex controller (4), a remote controller (5), a lifting main control board (6), a rotary main control board (7) and an amplitude-variable main control board (8) are connected to the CAN bus (1), and CAN isolation transceivers (9) are connected between the black box board (2), the linkage bedplate (3), the vortex controller (4), the remote controller (5), the lifting main control board (6), the rotary main control board (7), the amplitude-variable main control board (8) and the CAN bus (1).

2. The single bus structure of the integrated variable-frequency tower crane control device according to claim 1, characterized in that: the CAN isolation transceiver (9) is connected with the MCU through a signal input end RXD and a signal output end TXD, and the MCU is a micro control unit of the black box board (2), the linkage bedplate (3), the vortex controller (4), the remote controller (5), the lifting main control board (6), the rotary main control board (7) and the amplitude variation main control board (8); and the signal input end RXD and the signal output end TXD are both connected with a resistance-capacitance filter circuit.

3. The single bus structure of the integrated variable-frequency tower crane control device according to claim 1, characterized in that: the CAN isolation transceiver (9) is provided with an interface end CANH and an interface end CANL which are connected with the CAN bus (1), the interface end CANH is connected with the interface end CANO through a load resistor, and the interface end CANO and the interface end CANL are in short circuit at two ends of the CAN bus.

4. The single bus structure of the integrated variable-frequency tower crane control device according to claim 1, characterized in that: an electrolytic capacitor and a high-frequency capacitor which are connected in parallel are connected beside a power supply of the CAN isolation transceiver (9).

5. The single bus structure of the integrated variable-frequency tower crane control device according to any one of claims 1 to 4, characterized in that: the remote controller (5) is a bidirectional remote controller and comprises a transmitter and a receiver.

Technical Field

The invention relates to a communication structure of a control device of a variable-frequency tower crane, in particular to a single-bus structure of the control device of an integrated variable-frequency tower crane.

Background

The existing tower crane control device generally comprises a black box plate, a linkage bedplate, a vortex controller, a remote controller, a lifting main control board, a rotary main control board, an amplitude-variable main control board and the like, and when the tower crane controls lifting, rotating and amplitude-variable actions, the components need to be communicated with one another so as to complete accurate tower crane actions. At present, the mode of a tower crane communication structure adopts serial communication, 485 communication or IO port connection communication and the like. The communication structure has the conditions of serious interference and attenuation in the communication process, and has poor communication reliability and accuracy. Therefore, the communication structure of the existing tower crane control device has the problems of poor communication reliability and poor accuracy.

Disclosure of Invention

The invention aims to provide a single bus structure of an integrated variable frequency tower crane control device. The invention not only can improve the communication reliability, but also has the advantage of good communication accuracy.

The technical scheme of the invention is as follows: the single bus structure of the integrated variable-frequency tower crane control device comprises a CAN bus, wherein the CAN bus is connected with a black box board, a linkage bedplate, a vortex controller, a remote controller, a lifting main control board, a rotary main control board and a variable-amplitude main control board, and CAN isolation transceivers are connected between the black box board, the linkage bedplate, the vortex controller, the remote controller, the lifting main control board, the rotary main control board and the variable-amplitude main control board and the CAN bus.

In the single-bus structure of the integrated variable-frequency tower crane control device, the CAN isolation transceiver is connected with the MCU through a signal input terminal RXD and a signal output terminal TXD, and the MCU is a micro control unit of a black box plate, a linkage bedplate, a vortex controller, a remote controller, a lifting main control plate, a rotation main control plate and a variable amplitude main control plate; and the signal input end RXD and the signal output end TXD are both connected with a resistance-capacitance filter circuit.

In the single-bus structure of the control device of the integrated variable-frequency tower crane, the CAN isolation transceiver is provided with an interface end CANH and an interface end CANL which are connected with the CAN bus, the interface end CANH is connected with the interface end CANO through a load resistor, and the interface end CANO and the interface end CANL are in short circuit at two ends of the CAN bus.

In the single-bus structure of the control device of the integrated variable-frequency tower crane, the electrolytic capacitor and the high-frequency capacitor which are connected in parallel are connected beside the power supply of the CAN isolation transceiver.

In the single-bus structure of the control device of the integrated variable-frequency tower crane, the remote controller is a bidirectional remote controller and comprises a transmitter and a receiver.

Compared with the prior art, the invention designs the single bus structure of the integrated variable-frequency tower crane control device, adopts the CAN bus to connect three main boards (a lifting main control board, a rotary main control board and a variable-amplitude main control board), a black box board, a linkage bedplate, an eddy current controller and a remote controller, realizes the single bus connection structure, and connects CAN isolation transceivers on each node of the CAN bus (namely the node connecting each element), thereby avoiding the mutual interference among the power supplies of each element when the single bus structure is connected, and ensuring the reliability of CAN bus communication. In addition, the invention filters the signal receiving and transmitting between the MCU and the CAN isolation transceiver by arranging the resistance-capacitance filter circuit, filters high-frequency interference signals and further improves the communication reliability; by setting the load resistor and short-circuiting the interface terminal CANO and the interface terminal CANL at two ends of the CAN bus, the load resistor CAN be added on the CAN bus, and the communication reliability is further improved; the stability of the power supply of the temperature CAN isolation transceiver is achieved by setting the electrolytic capacitor and the high-frequency capacitor, and then the CAN isolation transceiver is matched with the load resistor and the resistance-capacitance filter circuit to form an isolated CAN transceiving function, so that the stability and accuracy of CAN bus communication are improved. Therefore, the invention not only can eliminate the mutual interference of multiple power supplies and improve the communication reliability, but also has the advantages of good communication stability and good communication accuracy.

Drawings

FIG. 1 is a block diagram of the present invention;

FIG. 2 is a connection block diagram of a CAN isolation transceiver;

fig. 3 is a circuit configuration diagram of the CAN isolation transceiver.

The labels in the figures are: the system comprises a 1-CAN bus, a 2-black box board, a 3-linkage bedplate, a 4-vortex controller, a 5-remote controller, a 6-lifting main control board, a 7-rotation main control board, an 8-amplitude variation main control board and a 9-CAN isolation transceiver.

Detailed Description

The present invention is further illustrated by the following examples, which are not to be construed as limiting the invention.