Equipment control system

Abstract

An embodiment of the present invention relates to a control system for a device, the system comprising: a contact feedback circuit, a main control board, a power switch, and a control circuit; the main control board being electrically connected to the contact feedback circuit, the control circuit, and the power switch, respectively; the contact feedback circuit receiving a target signal output by an external device and outputting the target signal to the main control board; the main control board outputting the target signal to the control circuit; the control circuit controlling the operating state of the system-bound device based on the target signal; and the main control board outputting the target signal to the power switch to control the on / off state of the power switch. Thus, a technical effect can be achieved by combining software and hardware to quickly cut off power in the event of a device failure and prevent component damage.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of magnetic levitation centrifuges, and in particular to a control system of the device. Background Art

[0002] Magnetic levitation centrifuges offer the advantages of being oil-free, frictionless, high-speed, and highly efficient. Utilizing advanced magnetic bearing technology, these centrifuges operate without contact friction, significantly increasing motor speed and possessing broad application prospects. High-power inverters play a crucial role in magnetic levitation centrifuge units. In practical applications, if a unit malfunctions, the inverter's inability to effectively and quickly initiate an emergency shutdown can cause serious equipment damage.

[0003] Therefore, how to achieve rapid emergency stop when equipment fails has become an urgent problem to be solved. Summary of the Invention

[0004] In view of this, in order to solve the technical problem of achieving rapid emergency stop of the above-mentioned equipment when a fault occurs, an embodiment of the present invention provides a control system for the equipment.

[0005] In a first aspect, an embodiment of the present invention provides a control system for a device, comprising: a contact feedback circuit, a main control board, a power switch, and a control circuit;

[0006] The main control board is electrically connected to the contact feedback circuit, the control circuit and the power switch respectively;

[0007] The contact feedback circuit receives a target signal output by an external device and outputs the target signal to the main control board. The main control board outputs the target signal to the control circuit. The control circuit controls the operating status of the system-bound device according to the target signal. In addition, the main control board outputs the target signal to the power switch to control the on / off state of the power switch.

[0008] In one possible implementation, the contact feedback circuit includes: a first switch and a comparison module;

[0009] One end of the first switch is connected to the high-level signal input terminal, and the other end is connected to the target signal output terminal and the first input terminal of the comparison module;

[0010] The second input terminal of the comparison module is connected to the high-level signal input terminal, and the output terminal is connected to the main control board as the output terminal of the contact feedback circuit.

[0011] In one possible implementation, the contact feedback circuit is configured as follows:

[0012] The first switch receives a target signal. When the first switch is closed, the first switch outputs a high-level emergency stop signal, controls the comparison module to output a low-level emergency stop signal, and controls the device to be powered off; when the first switch is open, the first switch outputs a low-level emergency stop signal, and uses the low-level emergency stop signal to control the comparison module to output a high-level emergency stop signal, so that the device operates normally.

[0013] In one possible implementation, the control circuit includes: a control module, an electric operation module, and a circuit breaker module;

[0014] The control module is electrically connected to the main control board, the electric operation module and the circuit breaker module respectively;

[0015] The control circuit is configured such that: the control module outputs a control signal after receiving the emergency stop signal output by the contact feedback circuit; when the control module outputs a high-level control signal, the electric operation module is controlled to be powered on and output a corresponding high-level control signal, and the circuit breaker module is controlled to output a high-level control signal at the same time;

[0016] or,

[0017] When the control module outputs a low-level control signal, the electric operation module is controlled to lose power and a corresponding low-level control signal is output, so that the circuit breaker module outputs a low-level control signal to control the system where the device is located to lose power.

[0018] In a possible implementation, the control module includes: a first switch submodule and a first control submodule;

[0019] One end of the first switch submodule is electrically connected to the main control board, and the other end is electrically connected to the first control submodule;

[0020] The control module is configured to: when the first switch submodule receives a control signal, control the first switch submodule to close and control the first control submodule to power on when the first switch submodule receives a high-level control signal;

[0021] or,

[0022] When the first switch submodule receives a low-level control signal, the first switch submodule is controlled to be disconnected, and the first control submodule is controlled to be powered off.

[0023] In a possible implementation manner, the first control submodule includes: a first relay and an undervoltage protector;

[0024] The input end of the first relay is connected to the output end of the first switch submodule, the first output end is connected to the low-level signal end, the second output end is connected to the input end of the undervoltage protector, and the third output end is connected to the first ground end;

[0025] The output end of the undervoltage protector is connected to the high level signal end.

[0026] In a possible implementation manner, the first control submodule is configured to: the first relay receives the control signal output by the first switch submodule, and when the first relay receives the high-level control signal, controls the first relay to close and controls the undervoltage protector to power on;

[0027] or,

[0028] When the first relay receives a low-level control signal, the first relay is controlled to be disconnected, and the undervoltage protector is controlled to be de-energized.

[0029] In a possible implementation, the electric operation module includes: a second switch submodule and a second control submodule;

[0030] One end of the second switch submodule is electrically connected to the main control board, and the other end is connected to the input end of the second control submodule;

[0031] The first output terminal of the second control submodule is connected to the low-level signal terminal, the second output terminal is connected to the high-level signal terminal, and the third output terminal is connected to the second ground terminal;

[0032] The electric operation module is configured as follows: the second switch submodule receives the control signal output by the control module, and when the second switch submodule receives the high-level control signal, controls the second switch submodule to close, outputs the high-level control signal to the second control submodule, and controls the second control submodule to power on;

[0033] or,

[0034] When the second switch submodule receives a low-level control signal, the second switch submodule is controlled to be disconnected, and the second control submodule is controlled to be powered off.

[0035] In a possible implementation manner, the second control submodule includes: a second relay and a third relay;

[0036] The input end of the second relay is connected to the output end of the second switch submodule, the first output end is connected to the low-level signal end, the second output end is connected to the high-level signal end, and the third output end is connected to the input end of the third relay;

[0037] The output terminal of the third relay is connected to the third ground terminal;

[0038] The second control submodule is configured to: the second relay receives the control signal output by the second switch submodule, and when the second relay receives the high-level control signal, controls the second relay to close upward, and inputs the output high-level control signal to the third relay to control the third relay to power on and conduct;

[0039] or,

[0040] When the second relay receives a low-level control signal, the second relay is controlled to be disconnected, and the third relay is controlled to lose power and be disconnected.

[0041] In one possible implementation, the third relay includes: a first inductor and a second switch;

[0042] The first inductor and the second switch are connected to the interior of the third relay;

[0043] The third relay is configured to: receive a control signal output by the second relay, control the first inductor to be powered on when the third relay receives a high-level control signal, and maintain the second switch in a closed state using the high-level control signal;

[0044] or,

[0045] When the third relay receives a low-level control signal, the first inductor is controlled to be de-energized, and the second switch is kept in an off state by using the low-level control signal.

[0046] In one possible implementation, the circuit breaker module includes: a first circuit breaker, a second circuit breaker, a contactor, a first resistor submodule, and a rectifier submodule;

[0047] The input end of the first circuit breaker is electrically connected to the input end of the second circuit breaker and the input end of the bus voltage source respectively; the output end of the second circuit breaker is electrically connected to the input end of the contactor in sequence;

[0048] The output end of the contactor is sequentially electrically connected to one end of the first resistor submodule, the other end of the resistor submodule is sequentially electrically connected to the output end of the first circuit breaker and the input end of the rectifier submodule, and the output end of the rectifier submodule is sequentially electrically connected to the power switch;

[0049] The circuit breaker module is configured to: when the device is powered on, input the bus voltage to the second circuit breaker, the second circuit breaker outputs the received bus voltage to the contactor, and outputs it to the power switch through the rectifier module, controlling the power switch to maintain a power supply state, the voltage of the first resistor submodule continuously increases, and when the bus voltage value reaches a set threshold, the contactor is controlled to be disconnected, and the first circuit breaker outputs a high-level emergency stop signal to control the first circuit breaker to be powered on;

[0050] or,

[0051] When the first circuit breaker receives a low-level emergency stop signal, the first circuit breaker is controlled to be opened, and the rectifier module is powered off.

[0052] The device control scheme provided by an embodiment of the present invention comprises a contact feedback circuit, a main control board, a power switch, and a control circuit. The main control board is electrically connected to the contact feedback circuit, the control circuit, and the power switch, respectively. The contact feedback circuit receives a target signal output by an external device and outputs the target signal to the main control board. The main control board outputs the target signal to the control circuit, and the control circuit controls the operating state of the bound device based on the target signal. The main control board also outputs the target signal to the power switch to control the on / off state of the power switch. This scheme can achieve the technical effect of rapidly shutting off power in the event of a device failure and preventing component damage by combining software and hardware. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0054] Figure 1 A schematic diagram of the structure of a control system of a device provided in an embodiment of the present invention;

[0055] Figure 2 A schematic diagram of the structure of a control system of another device provided by an embodiment of the present invention;

[0056] Figure 3 A schematic structural diagram of a control circuit provided by an embodiment of the present invention;

[0057] Figure 4 A schematic structural diagram of a contact feedback circuit provided by an embodiment of the present invention;

[0058] Figure 5 A schematic structural diagram of a control module provided in an embodiment of the present invention;

[0059] Figure 6A schematic structural diagram of an electric operation module provided by an embodiment of the present invention;

[0060] Figure 7 A schematic structural diagram of a circuit breaker module provided in an embodiment of the present invention;

[0061] Figure 8 A schematic flow chart of a circuit breaker module control method provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0062] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0063] In the embodiments of the present invention, the terms "including" and "having" are intended to convey an open-ended, inclusive meaning and indicate that additional elements / components / etc. may be present in addition to the listed elements / components / etc.; the terms "first" and "second," etc., are used merely as labels and do not limit the quantity of their objects. Furthermore, the various elements and regions in the drawings are shown for schematic purposes only, and thus the present invention is not limited to the sizes or distances shown in the drawings.

[0064] To facilitate understanding of the embodiments of the present invention, specific embodiments will be further explained below with reference to the accompanying drawings. The embodiments do not limit the embodiments of the present invention.

[0065] Figure 1 The present invention is a schematic diagram of a control system of a device provided by an embodiment of the present invention. The present invention is applied to the emergency stop control processing of the frequency converter. Figure 1 The control system of the device specifically includes:

[0066] Contact feedback circuit 11, main control board 12, power switch 13 and control circuit 14;

[0067] The internal circuit structure of a control system of a device provided by an embodiment of the present invention includes:

[0068] The main control board 12 is electrically connected to the contact feedback circuit 11 , the control circuit 14 and the power switch 13 respectively.

[0069] The contact feedback circuit 11 receives the target signal output by the external device and outputs the target signal to the main control board 12. The main control board 12 outputs the target signal to the control circuit 14. The control circuit 14 controls the operating status of the bound device according to the target signal; and the main control board 12 outputs the target signal to the power switch 13 to control the on / off state of the power switch 13.

[0070] In one possible embodiment, when a device failure is detected, the control contact feedback circuit outputs a target signal for emergency stop control and sends a low-level target signal to the main control board. The main control board receives the low-level target signal and controls the power switch to disconnect, thereby cutting off the power to the main control board. At the same time, the software program is used to control the corresponding control circuit to output a low-level control signal, and the low-level control signal is used to control the software program to interrupt the sending of the signal wave, thereby controlling the corresponding software system of the device to stop running, thereby achieving the technical effect of quickly cutting off power when the equipment fails and preventing device damage by combining software and hardware.

[0071] The control system for a device provided in an embodiment of the present invention comprises a contact feedback circuit, a main control board, a power switch, and a control circuit. The main control board is electrically connected to the contact feedback circuit, the control circuit, and the power switch, respectively. The contact feedback circuit receives a target signal from an external device and outputs the target signal to the main control board. The main control board outputs the target signal to the control circuit, which controls the operating state of the bound device based on the target signal. Furthermore, the main control board outputs the target signal to the power switch to control the on / off state of the power switch. This solution achieves the technical effect of rapidly shutting off power in the event of a device failure, preventing component damage, by combining software and hardware.

[0072] In an optional solution of an embodiment of the present invention, the contact feedback circuit includes: a first switch and a comparison module; one end of the first switch is connected to a high-level signal input terminal, and the other end is connected to a target signal output terminal and a first input terminal of the comparison module; the second input terminal of the comparison module is connected to the high-level signal input terminal, and the output terminal is connected to the main control board as the output terminal of the contact feedback circuit. The contact feedback circuit is configured as follows: the first switch receives the target signal, and when the first switch is closed, a high-level emergency stop signal is output through the first switch, which controls the comparison module to output a low-level emergency stop signal, thereby controlling the device to power off; when the first switch is open, the first switch outputs a low-level emergency stop signal, which controls the comparison module to output a high-level emergency stop signal, thereby controlling the device to operate normally.

[0073] In an optional scheme of an embodiment of the present invention, the control circuit includes: a control module, an electric operation module and a circuit breaker module; the control module is electrically connected to the main control board, the electric operation module and the circuit breaker module respectively; the control circuit is configured as follows: the control module outputs a control signal after receiving the emergency stop signal output by the contact feedback circuit; when the control module outputs a high-level control signal, the electric operation module is controlled to be powered on and output a corresponding high-level control signal, and the circuit breaker module is controlled to output a high-level control signal at the same time; or, when the control module outputs a low-level control signal, the electric operation module is controlled to lose power and output a corresponding low-level control signal, so that the circuit breaker module outputs a low-level control signal and the system where the control device is located is powered off.

[0074] In an optional scheme of an embodiment of the present invention, the control module includes: a first switch submodule and a first control submodule; one end of the first switch submodule is electrically connected to the main control board, and the other end is electrically connected to the first control submodule; the control module is configured as follows: the first switch submodule receives a control signal, and when the first switch submodule receives a high-level control signal, the first switch submodule is controlled to be closed, and the first control submodule is controlled to be powered on; or, when the first switch submodule receives a low-level control signal, the first switch submodule is controlled to be disconnected, and the first control submodule is controlled to be powered off.

[0075] In an optional solution of an embodiment of the present invention, the first control submodule includes: a first relay and an undervoltage protector; the input end of the first relay is connected to the output end of the first switch submodule, the first output end is connected to the low-level signal end, the second output end is connected to the input end of the undervoltage protector, and the third output end is connected to the first ground end; the output end of the undervoltage protector is connected to the high-level signal end. The first control submodule is configured such that: the first relay receives a control signal output by the first switch submodule, and when the first relay receives a high-level control signal, the first relay is controlled to close and the undervoltage protector is controlled to power on; or, when the first relay receives a low-level control signal, the first relay is controlled to open and the undervoltage protector is controlled to power off.

[0076] In an optional scheme of an embodiment of the present invention, the electric operation module includes: a second switch submodule and a second control submodule; one end of the second switch submodule is electrically connected to the main control board, and the other end is connected to the input end of the second control submodule; the first output end of the second control submodule is connected to the low-level signal end, the second output end is connected to the high-level signal end, and the third output end is connected to the second ground end; the electric operation module is configured as follows: the second switch submodule receives the control signal output by the control module, and when the second switch submodule receives the high-level control signal, controls the second switch submodule to close, outputs the high-level control signal to the second control submodule, and controls the second control submodule to power on; or, when the second switch submodule receives the low-level control signal, controls the second switch submodule to disconnect, and controls the second control submodule to lose power.

[0077] In an optional scheme of an embodiment of the present invention, the second control submodule includes: a second relay and a third relay; the input end of the second relay is connected to the output end of the second switch submodule, the first output end is connected to the low-level signal end, the second output end is connected to the high-level signal end, and the third output end is connected to the input end of the third relay; the output end of the third relay is connected to the third ground end; the second control submodule is configured as follows: the second relay receives the control signal output by the second switch submodule, and when the second relay receives the high-level control signal, controls the second relay to close upward, inputs the output high-level control signal to the third relay, and controls the third relay to power on and conduct; or, when the second relay receives the low-level control signal, controls the second relay to disconnect, and controls the third relay to lose power and disconnect.

[0078] In an optional scheme of an embodiment of the present invention, the third relay includes: a first inductor and a second switch; the first inductor and the second switch are connected to the inside of the third relay; the third relay is configured as follows: the third relay receives a control signal output by the second relay, and when the third relay receives a high-level control signal, the third relay controls the first inductor to be powered on, and uses the high-level control signal to keep the second switch in a closed state; or, when the third relay receives a low-level control signal, the third relay controls the first inductor to be de-energized, and uses the low-level control signal to keep the second switch in an open state.

[0079] In an optional solution of an embodiment of the present invention, the circuit breaker module includes: a first circuit breaker, a second circuit breaker, a contactor, a first resistor submodule and a rectifier module; the input end of the first circuit breaker is electrically connected to the input end of the second circuit breaker and the input end of the bus voltage source respectively; the output end of the second circuit breaker is electrically connected to the input end of the contactor in sequence; the output end of the contactor is electrically connected to one end of the first resistor submodule in sequence, the other end of the first resistor submodule is electrically connected to the output end of the first circuit breaker and the input end of the rectifier module in sequence, and the output end of the rectifier module is electrically connected to the power switch. The circuit breaker module is configured as follows: when the equipment is powered on, the bus voltage is input to the second circuit breaker, the second circuit breaker outputs the received bus voltage to the contactor, and outputs it to the power switch through the rectifier module, controls the power switch to maintain the power supply state, and the voltage of the first resistor module continues to rise. When the bus voltage value reaches the set threshold, the contactor is controlled to disconnect, and the first circuit breaker is used to output a high-level emergency stop signal to control the first circuit breaker to power on; or, when the first circuit breaker receives a low-level emergency stop signal, the first circuit breaker is controlled to disconnect and the rectifier module is powered off.

[0080] The following will be introduced as an example of a contact feedback circuit including: a first switch and a comparison module, a main control board, a power switch, and a control circuit including: a control module, an electric operation module and a circuit breaker module. The resistor in the embodiment of the present invention represents a resistor device, which can be represented by a resistor but is not limited to a resistor device. Figure 2 , shows a schematic diagram of the structure of a control system of another device provided by an embodiment of the present invention. The control system of this device is described based on the control system of the first device. Figure 2 Specifically shown include:

[0081] Contact feedback circuit 11, main control board 12, power switch 13 and control circuit 14.

[0082] The output point feedback circuit 11 specifically includes:

[0083] A first switch 111 and a comparison module 112 .

[0084] One end of the first switch 111 is connected to the high-level signal input, and the other end is connected to the target signal output and the first input of the comparison module 112. The second input of the comparison module 112 is connected to the high-level signal input, and the output of the comparison module 112 is connected to the main control board 12 as the output of the contact feedback circuit 11. The contact feedback circuit 11 is configured as follows: the first switch 111 receives the target signal. When the first switch 111 is closed, a high-level emergency stop signal is output through the first switch 111, which controls the comparison module 112 to output a low-level emergency stop signal, thereby controlling the device to power off. When the first switch 111 is open, the first switch 111 outputs a low-level emergency stop signal, which controls the comparison module 112 to output a high-level emergency stop signal, thereby controlling the device to operate normally.

[0085] Furthermore, when a fault occurs in the device, the emergency stop control mechanism of the device is activated by controlling the first switch to close. After the first switch is closed, a high-level signal is output and sent to the comparison module. The comparison module performs voltage comparison and outputs a low-level signal. The low-level signal is sent to the main control board as the output signal of the contact feedback circuit, completing the signal transmission processing of the emergency stop control mechanism.

[0086] according to Figure 2 The diagram provided shows a possible example scenario in which, when a device failure is detected, the emergency stop control mechanism of the system is activated by manually pressing the first switch 111 or by the system controlling the first switch 111 to automatically close. The obtained high-level signal is compared and processed in the comparison module 112 to obtain a low-level signal, and the low-level signal is sent to the main control board 12. After the main control board 12 receives the low level, it controls the power switch 13 to disconnect, thereby powering off the main control board 12. At the same time, after the software controls the DSP to receive the low-level signal, it stops sending a pulse width modulation signal wave (PWM) to the insulated gate bipolar transistor (IGBT), causing the software control system in the device to terminate its operation, thereby achieving the technical effect of quickly cutting off power when the device fails and preventing device damage by combining software and hardware.

[0087] In one possible example scenario, Figure 4 A structural diagram of a contact feedback circuit is provided. It is used in the emergency stop control process of the inverter. Figure 4The diagram shows that when the inverter is operating normally, the first switch SB is open. After passing through the RC circuit of resistor R1 and capacitor C1, the emergency stop signal JT is a low-level signal due to the current limiting effect of R2. The low-level JT signal is input to the negative input of the comparator. Due to the filtering effect of the RC circuit of resistor R1 and capacitor C1 and the voltage division effect of resistors R3 and R4, the voltage at the positive input of the comparator is lower than 24V. Therefore, after passing through the comparator, a high-level signal JT.DSP is output. The pull-up resistor R5 also keeps the signal JT.DSP in a high-level signal state. When a device fault occurs, the inverter activates the emergency stop control mechanism. By closing the first switch SB, the emergency stop signal JT outputs a high-level signal. When compared with the low-level voltage less than 24V at the positive input of the comparator, the comparator outputs a low-level signal JT.DSP, which is sent to the main control board as the emergency stop control signal.

[0088] like Figure 2 The control circuit 14 in the control system of the device specifically includes:

[0089] Control module 141, electric operation module 142 and circuit breaker module 143;

[0090] The control module 141 is electrically connected to the main control board 12, the electric operation module 142 and the circuit breaker module 143 respectively; the control circuit 14 is configured as follows: the control module 141 receives the emergency stop signal output by the contact feedback circuit 11 and then outputs a control signal; when the control module 141 outputs a high-level control signal, the electric operation module 142 is controlled to be powered on, and outputs a corresponding high-level control signal, and at the same time controls the circuit breaker module 143 to output a high-level control signal; or, when the control module 141 outputs a low-level control signal, the electric operation module 142 is controlled to lose power, and outputs a corresponding low-level control signal, so that the circuit breaker module 143 outputs a low-level control signal, and the system where the control device is located is powered off.

[0091] Furthermore, when the device is powered on, a corresponding high-level signal is fed back to the main control board through the contact feedback circuit. After the main control board receives the high-level signal, the emergency stop control mechanism will not be triggered. At the same time, the main control board outputs a corresponding high-level signal to the control module, and the control module sends the high-level signal to the electric operation module to control the electric operation module to remain in a closed state and enter a normal working state. At the same time, the main control board sends a high-level signal to the circuit breaker module to control the circuit breaker to close, so that the device enters a normal operating process. Through software control, the power switch is in a closed state, which can realize the function of powering the main control board. When the device fails, a low-level signal is output through the contact feedback circuit. After the main control board receives the low-level signal, it controls the power switch to disconnect, stops supplying power to the main control board, and cuts off the power to the main control board. At the same time, the control module is controlled by software to output a low-level signal and control the electric operation module to stop running. At the same time, the control module sends the output low-level signal to the circuit breaker module to control the circuit breaker to disconnect. When the software detects that the circuit breaker is disconnected, the software system in the control device stops running, thereby achieving the technical effect of quickly cutting off power when the equipment fails and preventing device damage by combining software and hardware.

[0092] according to Figure 2 The diagram provided shows a possible example scenario in which, when the inverter is powered on, a corresponding high-level signal is fed back to the main control board 12 via the contact feedback circuit 11. Upon receiving the high-level signal, the main control board 12 does not trigger the emergency stop control mechanism. Simultaneously, the main control board 12 outputs a corresponding high-level signal to the control module 141, which is then sent to the electric operation module 142 to control the normal operation of the electric operation module 142. Simultaneously, the main control board 12 sends a high-level signal to the circuit breaker module 143, controlling the circuit breaker to close and the device to enter normal operation. Software controls the DSP to send a high-level signal, closing the power switch 13 and supplying power to the main control board 12. When a device fault occurs, a low-level signal is output via the contact feedback circuit 11. Upon receiving the low-level signal, the main control board 12 controls the power switch 13 to disconnect, stopping power to the main control board 12 and causing the main control board 12 to lose power. At the same time, the control module 141 is controlled by the software DSP to output a low-level signal and control the electric operation module 142 to stop running. At the same time, the control module 141 sends the output low-level signal to the circuit breaker module 143 to control the circuit breaker to disconnect. When the software DSP detects that the circuit breaker is disconnected, the software system in the control device stops running, thereby achieving the technical effect of quickly cutting off power when the equipment fails and preventing device damage by combining software and hardware.

[0093] The following describes the control circuit in the control system of the device by taking the control module including: a first switch submodule and a first control submodule, and the first control submodule including: a first relay and an undervoltage protector, the electric operation module including: a second switch submodule and a second control submodule, and the second control submodule including: a second relay and a third relay, and the third relay including: a first inductor and a second switch, and the circuit breaker module including: a first circuit breaker, a second circuit breaker, a contactor, a first resistor submodule and a rectifier submodule as an example. Figure 3 , shows a schematic diagram of the structure of a control circuit provided by an embodiment of the present invention. Figure 3 Specifically shown include:

[0094] Control module 141 , electric operation module 142 and circuit breaker module 143 .

[0095] like Figure 3 The control module 141 in the control circuit specifically includes:

[0096] A first switch submodule 411 and a first control submodule 412 .

[0097] One end of the first switch submodule 411 is electrically connected to the main control board 12, and the other end is electrically connected to the first control submodule 412; the control module 141 is configured as follows: the first switch submodule 411 receives a control signal, and when the first switch submodule 411 receives a high-level control signal, the first switch submodule 411 is controlled to be closed, and the first control submodule 412 is controlled to be powered on; or, when the first switch submodule 411 receives a low-level control signal, the first switch submodule 411 is controlled to be disconnected, and the first control submodule 412 is controlled to be powered off.

[0098] according to Figure 3 The diagram provided shows a possible example scenario in which, when the device is in normal operation, a high-level control signal is received by the first switch submodule 411, which controls the first switch submodule 411 to close and output a high-level control signal, thereby powering on the first control submodule 412 and inputting a high-level control signal to the electric operation module 142 and the circuit breaker module 143, enabling normal operation of the control circuit. When a device malfunctions, the first switch submodule 411 receives a low-level control signal, controlling the first switch submodule 411 to open. The software program then controls the first control submodule 412 to power off, as the low-level control signal cannot provide a high-level operating signal to the first control submodule 412, causing the first control submodule 412 to lose power and cease operation. This allows for rapid power-off of the control module.

[0099] Figure 5 A schematic diagram of the structure of a control module provided by an embodiment of the present invention. Figure 5In the structure shown, the first control submodule 412 in the control circuit specifically includes:

[0100] The first relay J0 and the undervoltage protector QF1-a.

[0101] The first relay J0 has an input connected to the output of the first switch submodule 411, a first output connected to a low-level signal terminal, a second output connected to the input of the undervoltage protector QF1-a, and a third output connected to the first ground terminal DGND. The output of the undervoltage protector QF1-a is connected to a high-level signal terminal. The first control submodule 412 is configured to: receive a control signal from the first switch submodule 411; when the first relay J0 receives a high-level control signal, the first relay J0 is closed, thereby powering on the undervoltage protector QF1-a; or, when the first relay J0 receives a low-level control signal, the first relay J0 is opened, thereby powering off the undervoltage protector QF1-a.

[0102] according to Figure 5 The diagram shows a possible example scenario. When the device is operating normally, the emergency stop signal JDQ is high. Through the voltage divider between resistors R10 and R11 and the filtering effect of capacitor C11, transistor Q1 is turned on. Because transistor Q1's transmitter is connected to ground, its equivalent resistance is negligible when it is turned on. The high 5V voltage causes diode D1 to be non-conductive, and the high-level signal passes directly through transistor Q1 to the first relay J0. This energizes the first relay J0, which then energizes the undervoltage protector QF1-a because it is connected to a high voltage. The control module operates normally, outputting a high-level control signal. When a device fault occurs, the inverter activates the rapid emergency stop mechanism. A low-level control signal is output through the main control board and DSP, further turning transistor Q1 off. This causes the first relay J0 to lose power, and at the same time, under the control of the software program, the undervoltage protector QF1-a is controlled to be in a power-off state, thereby controlling the corresponding control module to lose power, thereby achieving the effect of quickly controlling the power off of the corresponding control module.

[0103] like Figure 3 The structure shown, the electric operation module 142 in the control circuit specifically includes:

[0104] A second switch submodule 421 and a second control submodule 422 .

[0105] One end of the second switch submodule 421 is electrically connected to the main control board, and the other end is connected to the input end of the second control submodule 422; the first output end of the second control submodule 422 is connected to the low-level signal end, the second output end is connected to the high-level signal end, and the third output end is connected to the second ground end; the electric operation module 142 is configured as follows: the second switch submodule 421 receives the control signal output by the control module 141, and when the second switch submodule 421 receives the high-level control signal, the second switch submodule 421 is controlled to be closed, the high-level control signal is output to the second control submodule 422, and the second control submodule 422 is controlled to be powered on; or, when the second switch submodule 421 receives the low-level control signal, the second switch submodule 421 is controlled to be disconnected, and the second control submodule 422 is controlled to lose power.

[0106] according to Figure 3 The diagram provided shows that in a possible example scenario, when the device is in normal working condition, the second switch submodule receives a high-level control signal, so that the second switch submodule remains in a closed and conductive state, and outputs a high-level control signal through the second switch submodule. When the second control submodule receives a high-level control signal sent by the second switch submodule, the second control submodule is powered on, and the software program controls the second control submodule to maintain a closed and powered state. When a device fails, the inverter activates the emergency stop control mechanism. A low-level control signal is sent to the second switch submodule, so that the second switch submodule is in a disconnected state and cannot provide a signal to the second control submodule. At the same time, the software program controls the second control submodule to lose power, so that the second control submodule is in a non-conductive and power-off state, thereby realizing a rapid power-off process of the electric control module.

[0107] Figure 6 This is a schematic diagram of the structure of an electric operation module provided by an embodiment of the present invention. Figure 6 In the structure shown, the second control submodule 422 in the control circuit specifically includes:

[0108] The second relay J1 and the third relay J2.

[0109] The input end of the second relay J1 is connected to the output end of the second switch submodule 421, the first output end is connected to the low-level signal end 5VDC, the second output end is connected to the high-level signal end 24VJ, and the third output end is connected to the input end of the third relay J2; the output end of the third relay J2 is connected to the third ground end DGND; the second control submodule 422 is configured as follows: the second relay J1 receives the control signal output by the second switch submodule 421, and when the second relay J1 receives a high-level control signal, controls the second relay J1 to close upward, inputs the output high-level control signal to the third relay J2, and controls the third relay J2 to power on and conduct; or, when the second relay J1 receives a low-level control signal, controls the second relay J1 to disconnect, and controls the third relay J2 to lose power and disconnect.

[0110] according to Figure 6 The diagram shows a possible example scenario. When the device is operating normally, the main control board outputs a high-level DC electric operation signal. The voltage divider between resistors R20 and R21 and the filtering effect of capacitor C21 turns on transistor Q2. Simultaneously, under the action of 5VDC, indicator D12 on the electric operation module illuminates. Transistor Q2 conducts, energizing the second relay J1. Simultaneously, under software control, KA1 is energized, closing the second switch QF1-b and activating the third relay J2. This activates the electric operation module. If a device fault occurs, the inverter activates the emergency stop control mechanism, causing the main control board to output a low-level DC signal, turning off transistor Q2. This de-energizes both the second and third relays, leaving the second switch QF1-b open and quickly shutting off power to the electric operation module.

[0111] like Figure 3 The structure shown, the circuit breaker module 143 in the control circuit, specifically includes:

[0112] A first circuit breaker 431 , a second circuit breaker 432 , a contactor 433 , a first resistor submodule 434 and a rectifier submodule 435 .

[0113] The input end of the first circuit breaker 431 is electrically connected to the input end of the second circuit breaker 432 and the input end of the bus voltage source respectively; the output end of the second circuit breaker 432 is electrically connected to the input end of the contactor 433 in sequence; the output end of the contactor 433 is electrically connected to the input end of the first resistor submodule 434 in sequence; the output end of the first resistor submodule 434 is electrically connected to the output end of the first circuit breaker 431 and the input end of the rectifier module 435 in sequence, and the output end of the rectifier module 435 is electrically connected to the power switch 13 in sequence; the circuit breaker module 143 is configured to: when the device is powered on, the bus voltage source is electrically connected to the output end of the second circuit breaker 432 ...; the output end of the rectifier module 435 is electrically connected to the power switch 13 in sequence; the circuit breaker module 143 is configured to: when the device is powered on, the bus voltage source is electrically connected to the output end of the second circuit breaker 432 The line voltage is input to the second circuit breaker 432, and the second circuit breaker 142 outputs the received bus voltage to the contactor 433, and outputs it to the power switch 13 through the rectifier module 435, controlling the power switch 13 to maintain the power supply state. The voltage of the first resistor module 434 continues to rise. When the bus voltage value reaches the set threshold, the contactor 433 is controlled to disconnect, and the first circuit breaker 431 is used to output a high-level emergency stop signal to control the first circuit breaker 431 to power on; or, when the first circuit breaker 431 receives a low-level emergency stop signal, the first circuit breaker 431 is controlled to disconnect, and the rectifier module 435 is powered off.

[0114] according to Figure 3 The diagram shows a possible example scenario in which, when the device is powered on, the bus voltage (i.e., three-phase power U, V, W) supplies power. Second circuit breaker 432 remains closed (normally closed) under the control of an external circuit. Contactor 433 is energized and closed under software control. Current limiting by first resistor submodule 434 causes the output voltage to be sent to power switch 13. Under software control, power switch 13 remains closed. Due to power loss in circuit breaker module 143, first circuit breaker 431 is controlled to remain open. Power is then closed by closing power switch 13, maintaining power to main control board 12. When the bus voltage reaches a set threshold, the voltage received by main control board 12 stabilizes, and the power-on startup process ends. Contactor 433 is controlled to open under DSP software control. Simultaneously, circuit breaker module 143 is energized, closing first circuit breaker 431 and power switch 13. Power is then supplied to main control board 12 via the line containing first circuit breaker 431. When a device malfunctions, manually pressing the emergency stop button or automatically closing it under software control triggers the inverter's emergency stop control mechanism. Software controls the circuit breaker module 143 to lose power, thereby controlling the first circuit breaker 431 to open. Simultaneously, software controls the contactor 433 to remain in the open state, disconnecting the power switch 13 and preventing power from being supplied to the main control board 12. This allows the main control board 12 to quickly power down. Software also controls the DSP to stop sending PWM waves, de-energizing the IGBT, thereby achieving rapid power down of the control system software. This achieves the technical effect of rapidly powering down the device in the event of a malfunction, preventing device damage, by combining software and hardware.

[0115] Figure 7 This is a schematic diagram of the structure of a circuit breaker module provided by an embodiment of the present invention. Figure 7 The structure shown, the third relay 433 in the control circuit, specifically includes:

[0116] a first inductor KA1 and a second switch QF1 - b.

[0117] The first inductor KA1 and the second switch QF1-b are connected to the inside of the third relay; the third relay 433 is configured as follows: the third relay J2 receives the control signal output by the second relay J1, and when the third relay J2 receives a high-level control signal, it controls the first inductor KA1 to be powered on, and uses the high-level control signal to keep the second switch QF1-b in a closed state; or, when the third relay J2 receives a low-level control signal, it controls the first inductor KA1 to be de-energized, and uses the low-level control signal to keep the second switch QF1-b in an open state.

[0118] according to Figure 7 The diagram shows a possible example scenario in which, when the device is powered on, the bus voltage (i.e., three-phase power U, V, W) supplies power. Second circuit breaker QF2 remains closed (normally closed) under the control of an external circuit. Software controls contactor KM1 to energize and close. Current limiting by the first resistor submodule R causes the output voltage to be sent to power switch 13. Under software control, power switch 13 remains closed. Due to power loss in circuit breaker module 143, first circuit breaker QF1 remains open, and power is maintained by closing power switch 13 to maintain power to the main control board 12. When the bus voltage reaches a set threshold, the voltage received by the main control board 12 stabilizes, and the power-on startup process ends. Contactor KM1 is controlled by the DSP software to open, and circuit breaker module 143 is energized, closing first circuit breaker QF1 and power switch 13. At this point, power is supplied to the main control board 12 via the line containing first circuit breaker QF1. When a device malfunctions, manually pressing the emergency stop button or automatically closing it under software control triggers the inverter's emergency stop control mechanism. Software controls the circuit breaker module 143 to lose power, thereby controlling the first circuit breaker QF1 to open. Simultaneously, software controls the contactor KM1 to remain in the open state, disconnecting the power switch 13 and preventing power to the main control board 12, thereby rapidly powering off the main control board 12. Simultaneously, software controls the DSP to stop sending PWM waves, de-energizing the IGBT, thereby achieving rapid power-off of the control system software. This achieves the technical effect of rapidly powering off the device in the event of a malfunction, preventing device damage, by combining software and hardware.

[0119] In one possible example scenario, Figure 8A schematic flow chart of a circuit breaker module control method provided by an embodiment of the present invention. Figure 8 The provided diagram shows the following process for the circuit breaker module control method: When the inverter is powered on, the emergency stop button SB is in the off state. Software controls the undervoltage protector QF1-a of the first circuit breaker QF1 to de-energize, causing the first circuit breaker QF1 to open. The second circuit breaker QF2 is closed, energizing the coil of the contactor KM1 and closing it, causing the bus voltage to rise. When the bus voltage rises to the software-set value, software controls the undervoltage protector QF1-a of the first circuit breaker QF1 to energize, energizing the first inductor KA1 of the third relay in the electric operation module 142, closing the first circuit breaker QF1 and de-energizing the coil of the contactor KM1, causing KM1 to open. The bus voltage rises to 540V, entering normal operation mode, and the run light illuminates. When a device malfunctions, the fault light illuminates when the emergency stop button SB is pressed or automatically closed by software control. The software detects a low-level emergency stop signal JT via contact feedback circuit 11, triggering the emergency stop mechanism. The software controls the DSP to stop sending the drive signal PWM wave, shutting down the inverter. Simultaneously, the software controls the undervoltage protector QF1-a of first circuit breaker QF1 to de-energize, rapidly opening first circuit breaker QF1. At this point, first circuit breaker QF1 and contactor KM1 are both disconnected, depriving the inverter of three-phase power input. The main control board 12, powered by bus voltage converted to 24V via power switch 13, also loses power. This achieves the technical effect of rapidly shutting off power in the event of a device malfunction and preventing component damage by combining software and hardware.

[0120] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A control system for an equipment, characterized in that: include: Contact feedback circuit, main control board, power switch and control circuit; The main control board is electrically connected to the contact feedback circuit, the control circuit and the power switch respectively; The contact feedback circuit receives a target signal output by an external device and outputs the target signal to the main control board. The main control board outputs the target signal to the control circuit. The control circuit controls the operating state of the system-bound device according to the target signal. And, the main control board outputs the target signal to the power switch to control the on / off state of the power switch; The control circuit includes: a control module, an electric operation module and a circuit breaker module; The control module is electrically connected to the main control board, the electric operation module and the circuit breaker module respectively; The control circuit is configured such that: the control module outputs a control signal after receiving the emergency stop signal output by the contact feedback circuit; when the control module outputs a high-level control signal, the electric operation module is controlled to be powered on and output a corresponding high-level control signal, and the circuit breaker module is controlled to output a high-level control signal at the same time; or, When the control module outputs a low-level control signal, the electric operation module is controlled to lose power and a corresponding low-level control signal is output, so that the circuit breaker module outputs a low-level control signal to control the system where the device is located to lose power.

2. The system according to claim 1, wherein: The contact feedback circuit includes: a first switch and a comparison module; One end of the first switch is connected to the high-level signal input terminal, and the other end is connected to the target signal output terminal and the first input terminal of the comparison module; The second input terminal of the comparison module is connected to the high-level signal input terminal, and the output terminal is connected to the main control board as the output terminal of the contact feedback circuit.

3. The system according to claim 2, characterized in that The contact feedback circuit is configured as follows: The first switch receives a target signal. When the first switch is closed, the first switch outputs a high-level emergency stop signal, controls the comparison module to output a low-level emergency stop signal, and controls the device to be powered off; when the first switch is open, the first switch outputs a low-level emergency stop signal, and uses the low-level emergency stop signal to control the comparison module to output a high-level emergency stop signal, so that the device operates normally.

4. The system according to claim 1, wherein: The control module includes: a first switch submodule and a first control submodule; One end of the first switch submodule is electrically connected to the main control board, and the other end is electrically connected to the first control submodule; The control module is configured to: when the first switch submodule receives a control signal, control the first switch submodule to close and control the first control submodule to power on when the first switch submodule receives a high-level control signal; or, When the first switch submodule receives a low-level control signal, the first switch submodule is controlled to be disconnected, and the first control submodule is controlled to be powered off.

5. The system according to claim 4, characterized in that The first control submodule includes: a first relay and an undervoltage protector; The input end of the first relay is connected to the output end of the first switch submodule, the first output end is connected to the low-level signal end, the second output end is connected to the input end of the undervoltage protector, and the third output end is connected to the first ground end; The output end of the undervoltage protector is connected to the high level signal end.

6. The system according to claim 5, characterized in that The first control submodule is configured to: the first relay receives the control signal output by the first switch submodule, and when the first relay receives the high-level control signal, controls the first relay to close and controls the undervoltage protector to power on; or, When the first relay receives a low-level control signal, the first relay is controlled to be disconnected, and the undervoltage protector is controlled to be de-energized.

7. The system according to claim 1, wherein: The electric operation module includes: a second switch submodule and a second control submodule; One end of the second switch submodule is electrically connected to the main control board, and the other end is connected to the input end of the second control submodule; The first output terminal of the second control submodule is connected to the low-level signal terminal, the second output terminal is connected to the high-level signal terminal, and the third output terminal is connected to the second ground terminal; The electric operation module is configured as follows: the second switch submodule receives the control signal output by the control module, and when the second switch submodule receives the high-level control signal, controls the second switch submodule to close, outputs the high-level control signal to the second control submodule, and controls the second control submodule to power on; or, When the second switch submodule receives a low-level control signal, the second switch submodule is controlled to be disconnected, and the second control submodule is controlled to be powered off.

8. The system according to claim 7, characterized in that The second control submodule includes: a second relay and a third relay; The input end of the second relay is connected to the output end of the second switch submodule, the first output end is connected to the low-level signal end, the second output end is connected to the high-level signal end, and the third output end is connected to the input end of the third relay; The output terminal of the third relay is connected to the third ground terminal; The second control submodule is configured to: the second relay receives the control signal output by the second switch submodule, and when the second relay receives the high-level control signal, controls the second relay to close upward, and inputs the output high-level control signal to the third relay to control the third relay to power on and conduct; or, When the second relay receives a low-level control signal, the second relay is controlled to be disconnected, and the third relay is controlled to lose power and be disconnected.

9. The system according to claim 8, characterized in that The third relay includes: a first inductor and a second switch; The first inductor and the second switch are connected to the interior of the third relay; The third relay is configured to: receive a control signal output by the second relay, control the first inductor to be powered on when the third relay receives a high-level control signal, and maintain the second switch in a closed state using the high-level control signal; or, When the third relay receives a low-level control signal, the first inductor is controlled to be de-energized, and the second switch is kept in an off state by using the low-level control signal.

10. The system according to claim 1, wherein: The circuit breaker module includes: a first circuit breaker, a second circuit breaker, a contactor, a first resistor submodule and a rectifier submodule; The input end of the first circuit breaker is electrically connected to the input end of the second circuit breaker and the input end of the bus voltage source respectively; the output end of the second circuit breaker is electrically connected to the input end of the contactor in sequence; The output end of the contactor is sequentially electrically connected to one end of the first resistor submodule, the other end of the first resistor submodule is sequentially electrically connected to the output end of the first circuit breaker and the input end of the rectifier submodule, and the output end of the rectifier submodule is sequentially electrically connected to the power switch; The circuit breaker module is configured to: when the device is powered on, input the bus voltage to the second circuit breaker, the second circuit breaker outputs the received bus voltage to the contactor, and outputs it to the power switch through the rectifier module, controlling the power switch to maintain a power supply state, the voltage of the first resistor submodule continuously increases, and when the bus voltage value reaches a set threshold, the contactor is controlled to be disconnected, and the first circuit breaker outputs a high-level emergency stop signal to control the first circuit breaker to be powered on; or, When the first circuit breaker receives a low-level emergency stop signal, the first circuit breaker is controlled to be opened, and the rectifier module is powered off.

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