CN220723359U - Crane controller with redundancy function - Google Patents
Crane controller with redundancy function Download PDFInfo
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- CN220723359U CN220723359U CN202323570295.XU CN202323570295U CN220723359U CN 220723359 U CN220723359 U CN 220723359U CN 202323570295 U CN202323570295 U CN 202323570295U CN 220723359 U CN220723359 U CN 220723359U
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- 238000004891 communication Methods 0.000 claims abstract description 17
- 239000003381 stabilizer Substances 0.000 claims abstract description 5
- 238000001514 detection method Methods 0.000 claims description 15
- 230000002159 abnormal effect Effects 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 3
- 230000003993 interaction Effects 0.000 description 3
- 230000005856 abnormality Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
Abstract
A crane controller with redundancy function comprises a voltage stabilizer, a control unit A, a high-speed communication unit, a control unit B and a PHY interface chip; the two voltage regulators are correspondingly connected with an external power supply, are respectively connected with a control unit A and a control unit B, and are connected through a high-speed communication unit; the control unit A and the control unit B are respectively connected with corresponding PHY interface chips through an RMII port; the controller is low in cost, stable and reliable.
Description
Technical Field
The utility model relates to the technical field of crane control, in particular to a crane controller with a redundancy function.
Background
As is known, a crane control system generally consists of a main controller, lower-end acquisition equipment and driving equipment; the main controller communicates with lower-end acquisition equipment such as an IO module, an analog quantity module, an encoder module and the like through communication interfaces such as Ethernet or RS-485 and the like so as to acquire crane operation and operation data, and controls driving equipment such as a frequency converter, a servo driver, a voltage regulation controller and the like on the basis of the operation and operation data; the main controller is used as a core module of the whole system, if the main controller is down or damaged due to faults, the whole system can work normally, so that the normal production is influenced, and serious safety accidents can be caused, so that the redundant design of the main control system becomes an important component part for the safe and stable operation of the crane;
at present, a plurality of main controller modules are generally adopted for the redundant design of the main controller in the market and are connected simultaneously, the main controller modules are communicated at high speed, such as special Ethernet, optical fibers and the like, for carrying out rapid interaction on operation data, so that the operation results can be rapidly synchronized, and if one module is abnormal, the main controller module can be rapidly switched to the other set of main controller for control operation; the scheme can avoid the problem that the system cannot normally operate due to the abnormality of a single main controller, but the cost is greatly increased due to the need of two sets of main control equipment;
thus, there is a need in the market today for a low cost and reliable controller.
Disclosure of Invention
In order to overcome the defects in the background art, the utility model discloses a crane controller with a redundancy function.
In order to achieve the aim of the utility model, the utility model adopts the following technical scheme:
a crane controller with redundancy function comprises a voltage stabilizer, a control unit A, a high-speed communication unit, a control unit B and a PHY interface chip; the two voltage regulators are correspondingly connected with an external power supply, are respectively connected with a control unit A and a control unit B, and are connected through a high-speed communication unit; the control unit A and the control unit B are respectively connected with corresponding PHY interface chips through an RMII port.
Preferably, the high-speed communication unit comprises a data transmitting circuit, a data receiving circuit, a high-speed clock CLK circuit, a control unit a detecting circuit and a control unit B detecting circuit, wherein the data transmitting circuit can transmit the data of the control unit a, the data receiving circuit can receive the data and transmit the data to the control unit B, and the high-speed clock CLK circuit is used for transmitting clock signals to the control unit a and the control unit B; the control unit A detection circuit and the control unit B detection circuit are respectively used for detecting the fault conditions of the control unit A and the control unit B.
Due to the adoption of the technical scheme, the utility model has the following beneficial effects:
according to the crane controller with the redundancy function, through the two sets of mutually independent control unit loops, when one control unit loop fails, the other control unit loop can be switched to work in time, in addition, the high-speed communication unit can continuously transmit the data of the control unit A to the control unit B, so that switching preparation is made at any time, and the control unit B can be switched in time when the control unit A fails, so that the crane can run safely and stably;
in addition, two control unit loops are integrated in one main controller hardware, so that the number of main controllers can be intuitively reduced, and the production cost is reduced.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
In the figure: 1. a voltage stabilizer; 2. a control unit A; 3. a high-speed communication unit; 4. a control unit B; 5. PHY interface chip.
Detailed Description
In the description, it should be understood that, if there is an azimuth or positional relationship indicated by terms such as "upper", "lower", "front", "rear", "left", "right", etc., the drawings merely correspond to the drawings of the present utility model, and in order to facilitate description of the present utility model, it is not indicated or implied that the device or element referred to must have a specific azimuth:
the crane controller with redundant function described with reference to fig. 1 comprises a voltage stabilizer 1, a control unit A2, a high-speed communication unit 3, a control unit B4 and a PHY interface chip 5; the two voltage regulators 1 are correspondingly connected with an external power supply, the two voltage regulators 1 are respectively connected with the control unit A2 and the control unit B4, the control unit A2 and the control unit B4 are connected through the high-speed communication unit 3, and through two sets of mutually independent control unit loops, the operation of one control unit loop can be timely switched to the other control unit loop for operation when the control unit loop fails, in addition, the high-speed communication unit 3 can continuously transmit the data of the control unit A2 to the control unit B4, the switching preparation is made at any time, and the control unit B4 can be timely switched when the control unit A2 fails, so that the crane can safely and stably operate; the control unit A2 and the control unit B4 are respectively connected with the corresponding PHY interface chip 5 through a RMII port;
in addition, the high-speed communication unit 3 includes a data transmission circuit capable of transmitting data of the control unit A2, a data reception circuit capable of receiving data and transmitting the data into the control unit B4, a high-speed clock CLK circuit for transmitting clock signals to the control unit A2 and the control unit B4, a control unit a detection circuit, and a control unit B detection circuit; the control unit A detection circuit and the control unit B detection circuit are respectively used for detecting fault conditions of the control unit A2 and the control unit B4, wherein a high-speed clock is used as a data interaction clock signal, and the highest frequency can reach 48MHz; the data transmitting circuit and the data receiving circuit are respectively composed of four signal wires, can communicate larger data volume at one time, so that the communication rate can reach 192MB/S at most, and only 1m/S is needed for completing one-time data interaction inside the control unit; the data transmission enabling and the data receiving enabling are both heartbeat clock signals with the frequency of 24MHz, when one signal is interrupted by more than 0.5mS or a fault signal is transmitted through a data transmission circuit, the system is judged to be abnormal, and at the moment, the control unit B4 is started and sends out an alarm signal to remind a user to timely process the abnormal condition.
When the crane controller with the redundancy function is implemented, the control unit A2 is used as a main control unit, the control unit B4 is used as an auxiliary control unit, the control unit A2 is used as an operation unit of all data in normal operation, the control unit B4 is used as a standby, and when an abnormal condition occurs in the control unit A2, an alarm signal is sent out and the control unit B4 is switched to operate; meanwhile, if the control unit A2 is restored to normal, the synchronous operation data is continuously executed by the control unit A2; no matter which unit fails, alarm information is sent to the operation desk to remind a user of timely maintenance;
it should be noted that, according to the failure cause, there are two redundancy switching modes:
1) Failure caused by abnormality of external equipment of the controller; each set of control unit has a fault detection mechanism in the operation process, when abnormal conditions of the system such as unplugged network cables, abnormal EEPROM communication and the like are detected, an error instruction is sent to the other set of control unit, and the control unit is directly switched to a normal control unit for execution at the moment;
2) The control unit fails or is down; two heartbeat enabling signals exist between the control unit A2 and the control unit B4, namely a control unit A detection circuit and a control unit B detection circuit, the control unit A detection circuit is used for sending the control unit A2 to the control unit B4, the control unit B detection circuit is used for sending the control unit B4 to the control unit A2, the signals are 2MHz frequency clock signals, if one of the signals is interrupted for more than 0.5ms, the corresponding control unit is judged to be down or damaged, an alarm signal is sent, and the other set of system continues to execute a crane operation program.
The utility model has not been described in detail in the prior art, and it is apparent to those skilled in the art that the utility model is not limited to the details of the above-described exemplary embodiments, but that the utility model can be embodied in other specific forms without departing from the spirit or essential characteristics thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (2)
1. A crane controller with redundant function is characterized in that: comprises a voltage stabilizer (1), a control unit A (2), a high-speed communication unit (3), a control unit B (4) and a PHY interface chip (5); the two voltage regulators (1) are arranged, the two voltage regulators (1) are correspondingly connected with an external power supply, the two voltage regulators (1) are respectively connected with the control unit A (2) and the control unit B (4), and the control unit A (2) and the control unit B (4) are connected through the high-speed communication unit (3); the control unit A (2) and the control unit B (4) are respectively connected with the corresponding PHY interface chip (5) through an RMII port.
2. The crane controller with redundancy function as claimed in claim 1, characterized in that: the high-speed communication unit (3) comprises a data sending circuit, a data receiving circuit, a high-speed clock CLK circuit, a control unit A detection circuit and a control unit B detection circuit, wherein the data sending circuit can send data of the control unit A (2), the data receiving circuit can receive the data and transmit the data to the control unit B (4), and the high-speed clock CLK circuit is used for sending clock signals to the control unit A (2) and the control unit B (4); the control unit A detection circuit and the control unit B detection circuit are respectively used for detecting fault conditions of the control unit A (2) and the control unit B (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323570295.XU CN220723359U (en) | 2023-12-27 | 2023-12-27 | Crane controller with redundancy function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323570295.XU CN220723359U (en) | 2023-12-27 | 2023-12-27 | Crane controller with redundancy function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220723359U true CN220723359U (en) | 2024-04-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323570295.XU Active CN220723359U (en) | 2023-12-27 | 2023-12-27 | Crane controller with redundancy function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220723359U (en) |
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2023
- 2023-12-27 CN CN202323570295.XU patent/CN220723359U/en active Active
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