Shelter top cover control system

Abstract

The utility model discloses a square cabin top cover control system which comprises a driving assembly, a control assembly and a control assembly, the driving assembly comprises a driving motor and an electric cylinder, and the driving motor is in driving connection with the electric cylinder; the driver is connected with the driving motor, the driver comprises a control module and a starting module, the control module comprises an encoder, the encoder is connected with the motor, the control module further comprises a CAN communication circuit, and the CAN communication circuit is used for being connected with a controller. The starting module comprises a capacitor module and a driving module, the capacitor module is connected with the driving module, the driving module is connected with the motor, and the encoder, the CAN communication circuit and the driving module are subjected to redundancy design. According to the shelter top cover control system provided by the utility model, redundant design is carried out on partial modules of the driver, and when partial modules break down, automatic switching can be carried out, so that the overall reliability of the control system is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of shelter control, and more specifically, to a shelter top cover control system. Background Art

[0002] The existing lid opening control system is mainly designed for a single function and fails to achieve integrated design. The installation positions of the functional modules inside the servo control system are messy, which is not convenient for detection and maintenance.

[0003] At the same time, conventional servo control systems are not designed with redundancy, resulting in the inability to automatically switch to another module and continue working after a failure occurs, which reduces the reliability of use. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model innovatively provides a shelter top cover control system, which can solve the technical problems of poor integration and low reliability of the shelter cover opening system in the prior art.

[0005] In order to achieve the above technical purpose, the utility model discloses a shelter roof control system, comprising:

[0006] A driving assembly, the driving assembly comprising a driving motor and an electric cylinder, the driving motor being drivingly connected to the electric cylinder;

[0007] A driver, the driver is connected to the drive motor, the driver includes a control module and a start module, the control module includes an encoder, the encoder is connected to the motor, the control module also includes a CAN communication circuit, the CAN communication circuit is used to connect to the controller,

[0008] The starting module includes a capacitor module and a driving module, wherein the capacitor module is connected to the driving module, and the driving module is connected to the motor.

[0009] Wherein, the encoder, CAN communication circuit and drive module are designed with redundancy.

[0010] Furthermore, the electric cylinder includes a reducer and a cylinder body, the reducer is connected to the cylinder body through a ball screw, and the drive motor is drivingly connected to the reducer.

[0011] The reducer is provided with a manual rocker, and the manual rocker is used to control the rotation of the reducer.

[0012] Furthermore, two encoders are provided, and the two encoders are independent of each other and connected to the driving motor at the same time;

[0013] Two CAN communication circuits are provided, and the two CAN communication circuits are provided independently of each other.

[0014] Furthermore, two driving modules are provided, the two driving modules are independent of each other and are connected to the driving motor at the same time, and each driving module is connected to the capacitor module via a relay.

[0015] Furthermore, the control module includes a power supply circuit, a DSP control circuit, a 485 communication circuit, a CAN communication circuit and an IO circuit.

[0016] Furthermore, the power supply circuit includes a DCDC power supply module and an LDO. The DCDC power supply module is used to power the chip and the encoder respectively, and the DSP control circuit is powered by the LDO.

[0017] Furthermore, the driving module includes an IGBT module, a discharge circuit, a capacitor module, a slow start circuit and a relay module.

[0018] Furthermore, the capacitor module includes a slow-start circuit and a capacitor.

[0019] The beneficial effects of the utility model are:

[0020] The cabin top cover control system provided by the utility model is designed with redundancy in some modules of the driver, and can be automatically switched when some modules fail, thereby improving the overall reliability of the control system. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A block diagram of a shelter top cover control system according to an embodiment of the utility model is shown;

[0022] Figure 2 The structural block diagram of the shelter top cover control system of the utility model embodiment is shown;

[0023] Figure 3 The structure block diagram of the driver of the utility model embodiment is shown;

[0024] Figure 4 The closed-loop control block diagram of the third embodiment of the utility model is shown;

[0025] Figure 5 The double closed-loop control block diagram of the utility model embodiment is shown;

[0026] Figure 6 The following is a timing flow chart of the lid opening control in an embodiment of the utility model;

[0027] Figure 7 The following is a flowchart of the active / standby switching in an embodiment of the present utility model. DETAILED DESCRIPTION

[0028] The cabin top cover control system provided by the utility model is explained and illustrated in detail below in conjunction with the accompanying drawings of the specification.

[0029] The cabin top cover control system provided by the utility model has a redundant design in some modules of the driver, and can automatically switch when some modules fail, thereby improving the overall reliability of the control system. The utility model is described in detail below in conjunction with specific embodiments:

[0030] In some embodiments, Figure 1 As shown, the utility model provides a cabin top cover control system, including a drive assembly and a driver, the drive assembly is connected to the cabin top cover for controlling the opening and closing of the top cover, and the driver is connected to the drive assembly for controlling the action of the drive assembly.

[0031] like Figure 1 , Figure 2 , Figure 3 As shown, the drive assembly includes a drive motor and an electric cylinder, and the drive motor is drive-connected to the electric cylinder. Optionally, the drive motor is a servo motor, and the electric cylinder includes a reducer and a cylinder body. The reducer is connected to the cylinder body through a ball screw, and the reducer also includes a manual rocker. When the drive fails or the power is off, the manual rocker can be used to control the rotation of the reducer, thereby driving the cylinder body to extend and retract to achieve control of the opening and closing of the top cover.

[0032] The driver is connected to the drive motor, and the driver includes a control module and a start module. The control module includes an encoder, and the encoder is connected to the motor. The control module also includes a CAN communication circuit, and the CAN communication circuit is used to connect to the controller. The start module includes a capacitor module and a drive module, and the capacitor module is connected to the drive module, and the drive module is connected to the motor. The encoder, the CAN communication circuit and the drive module are redundantly designed, and automatically switch to another channel through a hot-cut mode (master-standby switching), so as to ensure normal operation.

[0033] In one embodiment, the electric cylinder includes a reducer and a cylinder body, the reducer is connected to the cylinder body through a ball screw, the drive motor is connected to the reducer, and a manual rocker is provided on the reducer, and the manual rocker is used to control the rotation of the reducer. Optionally, the reducer is a planetary gear reducer, the reducer forms a power pack, and finally forms a single gear output form, and the rotary motion is converted into the linear motion of the push rod through the ball screw pair to realize the swinging motion of the top cover around the turning point. The electric cylinder uses a ball screw pair as a transmission element to realize the motion conversion function, ensuring that the electric cylinder has sufficient transmission rigidity and strength. At the same time, the servo motor is equipped with a power-off brake, so that the electric cylinder can be kept in any position for a long time, ensuring the safety of the electric cylinder.

[0034] In this embodiment, the control module includes a power supply circuit, a DSP (Digital Signal Process) control circuit, a 485 communication circuit, a CAN communication circuit, an IO circuit and an encoder. Among them, the power supply circuit includes a DCDC power supply module and an LDO (Low Dropout Regulator), and the DCDC power supply module is used to power the chip, and the encoder is used to power the encoder, and the DSP control circuit is powered by the LDO. The DSP control circuit is the control core of the driver, realizing the three-ring control, driver protection, communication and other functions of the motor. The encoder and the debugging host computer realize two-way communication with the DSP control circuit through the 485 chip, and the communication control between the debugging host computer and the servo driver is realized by using the 485 communication chip + digital isolator. The CAN communication circuit is used for the driver to receive the instructions sent by the host computer, and at the same time to feed back the relevant monitoring data to the host computer, so as to realize the two-way communication between the driver and the host computer, and the communication control between the host computer and the servo driver is realized by using the CAN communication chip + digital isolator. The IO circuit adopts optical coupling isolation, which mainly realizes the signal detection between the proximity switch. Two encoders are set, the two encoders are independent of each other and connected to the drive motor at the same time; two CAN communication circuits are set, the two CAN communication circuits are set independently of each other, and the encoder and CAN communication adopts a main and standby two-way redundant design to ensure that the servo drive can automatically identify when a channel fails, and automatically switch to another channel through a hot way (main and standby switching), so as to ensure normal operation. For example, with dual-channel CAN redundant communication, both CANs can receive commands from the host computer. If there is a command on channel A within the corresponding time, regardless of whether there is a command on channel B, the command on channel A will be responded to; if there is no command on channel A within the corresponding time, but there is a command on channel B, the command on channel B will be responded to, and data and alarm information will be reported periodically through two CANs.

[0035] In this embodiment, the start-up module includes an IGBT (Insulated Gate Bipolar Transistor) module, a discharge circuit, a capacitor module, a slow start circuit and a relay. Among them, the IGBT module is used to drive the three-phase power of the motor. The drive circuit PWM (Pulse Width Modulation) wave is shaped by a buffer. The drive circuit is driven by a drive optocoupler.

[0036] The function of the discharge circuit is: when the permanent magnet synchronous motor is in the process of deceleration braking, the DC bus voltage in the drive system will increase, which needs to be controlled. In view of the voltage in the DC bus, a discharge module is added to the drive system, and the operation of the discharge module is controlled by the DSP control circuit braking judgment program. When the bus voltage exceeds the design value, the DSP control circuit sends a discharge module start signal to open the discharge circuit. When the DSP control circuit detects that the bus voltage drops to the design value, the discharge circuit is closed.

[0037] The capacitor module is set at the front end of the drive module to accommodate and release the charge. When the high voltage is powered on, a slow start circuit is designed to effectively reduce the capacitor charging current, reduce the instantaneous impact on the front-end power supply and protect the bus filter capacitor. When the contactor is disconnected during power-on, the power resistor can play a role in limiting the charging circuit; when the DSP control circuit detects that the filter capacitor voltage is charged to the design value, the high-voltage relay is controlled to conduct, the power resistor is short-circuited, and the power supply circuit works normally.

[0038] Relay protection is added to the front end of the drive module, and the switching between drive modules is realized by switching the relay in redundant protection. The switching circuit realizes the switching function of the main and standby inverter modules, which is mainly composed of high-voltage relays. The closing and closing of the relay realizes the connection or disconnection of the drive module, and the switching of the positive and three-phase power output of the bus is realized through the relay. Optionally, a fuse is designed at the front end of the relay. When the IGBT module fails to control the driver and the driver is short-circuited, the current is cut off first to ensure that the relay contacts are not sticky and the power input current of the drive module is effectively cut off. When selecting the fuse, it should be ensured that it has a shorter cut-off time than the relay under the same short-circuit current.

[0039] In this embodiment, two driving modules are provided, the two driving modules are independent of each other and are connected to the driving motor at the same time, and each driving module is connected to the capacitor module via a relay.

[0040] In this embodiment, the control system of the shelter roof is based on the SVPWM (Space Vector Pulse Width Modulation) control algorithm, for example, the control strategy of id=0 and the three-closed-loop control design are adopted, position and speed control are supported, and 12 PWM wave signals are generated, of which 6 are used for the main drive module and 6 PWM wave signals are used as redundant design for the backup drive module. High-speed, high-precision and high-response servo control is achieved through a fully digital real-time control software platform.

[0041] The driver control software of the embodiment of the present application has high reliability and high real-time performance. A modular structure design is adopted to improve the maintainability of the program; a simplified design is adopted to reduce the coupling between modules. According to functional requirements, CSCI (complex software control project) is decomposed into initialization function, signal acquisition function, CAN communication function and fault handling function.

[0042] like Figure 6 As shown, the workflow of the shelter top cover control system of this application includes:

[0043] When the driver is powered on, the bus voltage is detected internally by the driver, and the self-test function of the control software is used to detect it. When the requirements are met, the slow-start relay is closed, the driver enters the ready state, and starts to enable (if the enablement cannot be achieved, N means self-test is performed and the enablement ready state is achieved). The driver enters the fault detection state. If there is no fault, the speed closed loop is entered to start issuing speed instructions, the top cover is opened or closed, the position closed loop is realized, and then the enable is cut off, the brake is closed, and the driver enters the ready state. When the driver fails, it is tested, the fault location is determined, and the redundant design of the main and standby hot switching is started. N means that the main and standby hot switching cannot be performed, the fault stops, and manual operation is adopted. Y means that the main and standby switching is performed, the fault is cleared, the operation continues, the speed instruction starts, and the top cover is opened or closed. N means that after the switch, the fault occurs again, resulting in a fault stop, and manual operation is adopted.

[0044] Alternatively, if Figure 7 As shown in FIG. 1 , the process of active / standby switching includes:

[0045] The driver is running, and the main drive fails. It is tested and found to be OK, that is, N, and it runs according to the normal process. Y means that a fault occurs, and the machine brake is stopped first, and the main and standby switches are performed. N means that the driver cannot perform the main and standby switch by self-test, and the task ends directly. Y means that the main and standby switch is performed, and after success, the signal is fed back to the controller (host computer), and the host computer synchronizes the main and standby switch, and waits for new instructions from the host computer. The driver performs a self-test on the standby drive. N means that there is no problem, and it runs according to the normal process. Y means that there is a problem with the standby drive, and the fault is stopped and the brake is closed.

[0046] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0047] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] In the description of this specification, the description with reference to the terms "this embodiment", "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any at least one embodiment or example. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0049] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0050] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and simple improvements made to the essential contents of the present invention shall be included in the protection scope of the present invention.

Claims

1. A shelter roof control system, characterized in that: include: A driving assembly, the driving assembly comprising a driving motor and an electric cylinder, the driving motor being drivingly connected to the electric cylinder; A driver, the driver is connected to the drive motor, the driver includes a control module and a start module, the control module includes an encoder, the encoder is connected to the motor, the control module also includes a CAN communication circuit, the CAN communication circuit is used to connect to the controller, The starting module includes a capacitor module and a driving module, wherein the capacitor module is connected to the driving module, and the driving module is connected to the motor. Wherein, the encoder, CAN communication circuit and drive module are designed with redundancy.

2. The shelter roof control system according to claim 1, characterized in that: The electric cylinder comprises a reducer and a cylinder body, wherein the reducer is connected to the cylinder body via a ball screw, and the drive motor is drivingly connected to the reducer. The reducer is provided with a manual rocker, and the manual rocker is used to control the rotation of the reducer.

3. The shelter roof control system according to claim 2, characterized in that: Two encoders are provided, the two encoders are independent of each other and are connected to the driving motor at the same time; Two CAN communication circuits are provided, and the two CAN communication circuits are provided independently of each other.

4. The shelter roof control system according to claim 3, characterized in that: Two driving modules are provided, the two driving modules are independent of each other and are connected to the driving motor at the same time, and each driving module is connected to the capacitor module via a relay.

5. The shelter roof control system according to claim 4, characterized in that: The control module includes a power supply circuit, a DSP control circuit, a 485 communication circuit, a CAN communication circuit and an IO circuit.

6. The shelter roof control system according to claim 5, characterized in that: The power supply circuit includes a DCDC power supply module and an LDO. The DCDC power supply module is used to power the chip through one channel and the encoder through another channel, and the DSP control circuit is powered through the LDO.

7. The shelter roof control system according to claim 6, characterized in that: The driving module includes an IGBT module, a discharge circuit, a capacitor module, a slow start circuit and a relay module.

8. The shelter roof control system according to claim 7, characterized in that: The capacitor module includes a slow-start circuit and a capacitor.

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