Power supply control device and system and fire control system

Abstract

The invention provides a power supply control device and system and a fire control system. The power supply control device comprises a first switch unit, a second switch unit and a rotating unit. A first access end of the first switch unit is used for accessing a first power supply, a second access end of the first switch unit is used for being electrically connected with a first power supply end of a motor used for controlling power supply of a load in fire fighting, and a first access end of the second switch unit is used for accessing a second power supply. A second access end of the second switch unit is used for being electrically connected with a second power supply end of the motor; the rotating unit is fixedly connected with a rotating shaft of the motor and used for controlling the first switch unit to be switched off based on driving of the motor in the first rotating direction after the motor is connected to the first power source through the first switch unit. The control of the motor completely depends on hardware, so that compared with the prior art, the reliability is higher.

Description

Technical Field

[0001] The present invention relates to the technical field of power supply, and particularly to a power supply control device, a system and a fire control system. Background Art

[0002] In the power supply scenario of dual power supplies, a motor is usually used to drive the corresponding main control switch unit to select a certain power supply.

[0003] In the prior art, the control unit directly controls the forward and reverse rotation of the motor, so as to realize the conduction of the circuit corresponding to a certain power supply in the main control switch unit. However, this method completely depends on the driving control ability of the control unit for the motor. When errors or failures occur, the entire power supply selection function will be lost, and the reliability is relatively low. Summary of the Invention

[0004] Aiming at the deficiencies in the prior art, the present invention provides a power supply control device, a system and a fire control system.

[0005] In a first aspect, in one embodiment, the present invention provides a power supply control device, which includes a first switch unit, a second switch unit and a rotating unit;

[0006] The first access end of the first switch unit is used to access the first power supply, the second access end of the first switch unit is used to be electrically connected to the first power supply end of the motor, the first access end of the second switch unit is used to access the second power supply, and the second access end of the second switch unit is used to be electrically connected to the second power supply end of the motor for controlling the power supply of the load in the fire protection.

[0007] The rotating unit is fixedly connected to the rotating shaft of the motor, and is used to control the first switch unit to disconnect after the motor accesses the first power supply through the first switch unit and is driven in the first rotation direction; or is used to control the second switch unit to disconnect after the motor accesses the second power supply through the second switch unit and is driven in the second rotation direction.

[0008] In one embodiment, the power supply control device includes a first micro switch, a second micro switch and a double-break micro switch. The first micro switch and the double-break micro switch constitute the first switch unit, the second micro switch and the double-break micro switch constitute the second switch unit, and the rotating unit includes a motor rotation dial;

[0009] The first access end of the first micro switch is used to be electrically connected to the live wire of the first power supply, and the second access end of the first micro switch is used to be electrically connected to the first power supply end of the motor;

[0010] The first access end of the second micro switch is used to be electrically connected to the live wire of the second power supply, and the second access end of the second micro switch is used to be electrically connected to the second power supply end of the motor;

[0011] The first access terminal of the double-break microswitch is used to be electrically connected to the neutral wire of the first power supply and the neutral wire of the second power supply respectively, and the second access terminal of the double-break microswitch is used to be electrically connected to the neutral terminal of the motor;

[0012] The motor rotating paddle is used to control the double-break microswitch to conduct and the first microswitch to disconnect based on the drive of the motor in the first rotation direction, or to control the double-break microswitch to conduct and the second microswitch to disconnect based on the drive of the motor in the second rotation direction.

[0013] In one embodiment, the first microswitch and the second microswitch are respectively arranged on both sides of the double-break microswitch. The first microswitch includes a first elastic piece, the second microswitch includes a second elastic piece, the double-break microswitch includes an elastic protrusion, and the motor rotating paddle includes a groove for receiving the elastic protrusion and a first pressing part and a second pressing part respectively arranged on both sides of the groove;

[0014] The elastic protrusion is used to be pressed by being separated from the groove based on the drive of the motor in the first rotation direction or the second rotation direction, so as to control the double-break microswitch to conduct;

[0015] The first elastic piece is used to be pressed by the first pressing part based on the drive of the motor in the first rotation direction, so as to control the first microswitch to disconnect;

[0016] The second elastic piece is used to be pressed by the second pressing part based on the drive of the motor in the second rotation direction, so as to control the second microswitch to disconnect.

[0017] In a second aspect, in one embodiment, the present invention provides a power supply control system, which includes a main control switch unit, a motor, a channel switching unit, a control unit, and the power supply control device in any one of the above embodiments;

[0018] The first input terminal of the channel switching unit is used to access the first power supply, the second input terminal of the channel switching unit is used to access the second power supply, the output terminal of the channel switching unit is electrically connected to the first access terminal of the first switch unit and the first access terminal of the second switch unit respectively, and the controlled terminal of the channel switching unit is electrically connected to the output terminal of the control unit;

[0019] The first input terminal of the main control switch unit is used to access the first power supply, the second input terminal of the main control switch unit is used to access the second power supply, and the output terminal of the main control switch unit is used to be electrically connected to the load; the main control switch unit is used to control the line between its first input terminal and the output terminal to conduct based on the drive of the motor in the first rotation direction, or to control the line between its second input terminal and the output terminal to conduct based on the drive of the motor in the second rotation direction.

[0020] In one embodiment, the channel switching unit includes a driving subunit and a first relay;

[0021] The input end of the driving subunit is electrically connected to the output end of the control unit, the output end of the driving subunit is electrically connected to the coil part in the first relay, the first input end of the contact part in the first relay is used to connect to the first power supply, the second input end of the contact part in the first relay is used to connect to the second power supply, and the output end of the contact part in the first relay is electrically connected to the first access end of the first switch unit and the first access end of the second switch unit respectively.

[0022] In one embodiment, the driving subunit includes a triode and a thyristor optocoupler;

[0023] The base of the triode is electrically connected to the output end of the control unit, the collector of the triode is electrically connected to the second end of the light-emitting part in the thyristor optocoupler, and the emitter of the triode is used for grounding;

[0024] The first end of the light-emitting part in the thyristor optocoupler is used to connect to the operating voltage, the first end of the photosensitive part in the thyristor optocoupler is used to be electrically connected to the live wire of the first power supply and / or the live wire of the second power supply, and the second end of the photosensitive part in the thyristor optocoupler is electrically connected to the first end of the coil part in the first relay;

[0025] The second end of the coil part in the first relay is used to be electrically connected to the neutral wire of the first power supply and / or the neutral wire of the second power supply.

[0026] In a third aspect, in one embodiment, the present invention provides a fire control system, which includes a fire switch unit, a neutral wire switch, and the power supply control system in any of the above embodiments, and the power supply control system includes the above-mentioned power supply control device;

[0027] The channel switching unit is electrically connected to the first microswitch, the second microswitch, and the double-break microswitch respectively through the fire switch unit, and the fire switch unit is also used to be electrically connected to the neutral end of the motor through the neutral wire switch;

[0028] The controlled end of the fire switch unit is used to access the fire signal, and is used to control the output selection of the live wire signal and the neutral wire signal according to the fire signal.

[0029] In one embodiment, the first live wire input end of the fire switch unit is electrically connected to the first live wire output end of the channel switching unit, the second live wire input end of the fire switch unit is electrically connected to the second live wire output end of the channel switching unit, and the neutral wire input end of the fire switch unit is electrically connected to the neutral wire output end of the channel switching unit;

[0030] The first live wire output terminal and the second live wire output terminal corresponding to the first live wire input terminal in the fire control switch unit are electrically connected to the first access terminal of the first micro switch and the first access terminal of the second micro switch respectively. The third live wire output terminal and the fourth live wire output terminal corresponding to the second live wire input terminal in the fire control switch unit are electrically connected to the first access terminal of the second micro switch and the first access terminal of the first micro switch respectively. The first neutral wire output terminal and the second neutral wire output terminal corresponding to the neutral wire input terminal in the fire control switch unit are electrically connected to the first access terminal of the double-break micro switch and the first access terminal of the neutral wire switch respectively;

[0031] The second access terminal of the neutral wire switch is used to be electrically connected to the neutral terminal of the motor.

[0032] In one embodiment, the fire control switch unit includes a second relay;

[0033] The coil part in the second relay is used to access the fire signal, and the contact parts in the second relay are electrically connected to the channel switching unit, the first switch unit, the second switch unit and the neutral wire switch respectively.

[0034] In one embodiment, the fire control system specifically includes the power supply control system in the above-mentioned one embodiment;

[0035] When the first relay controls the output of the first power supply and the coil part in the second relay accesses the fire signal indicating that there is no fire alarm, the contact part in the second relay outputs the live wire signal of the first power supply to the first micro switch and outputs the neutral wire signal of the first power supply to the neutral terminal of the motor through the neutral wire switch, so that the motor rotates to the first position and the first power supply is normally powered;

[0036] If subsequently the coil part in the second relay accesses the fire signal indicating that there is a fire alarm, the contact part in the second relay outputs the live wire signal of the first power supply to the second micro switch and outputs the neutral wire signal of the first power supply to the double-break micro switch, so that the motor rotates reversely to the second position and the first power supply is cut off from power supply.

[0037] In one embodiment, the fire control system specifically includes the power supply control system in the above-mentioned one embodiment;

[0038] When the first relay controls the output of the second power supply and the coil part in the second relay accesses the fire signal indicating that there is no fire alarm, the contact part in the second relay outputs the live wire signal of the second power supply to the second micro switch and outputs the neutral wire signal of the second power supply to the neutral terminal of the motor through the neutral wire switch, so that the motor rotates to the second position and the second power supply is normally powered;

[0039] If a fire signal indicating a fire alarm is then connected to the coil part in the second relay, the contact part in the second relay outputs the live wire signal of the second power supply to the first micro switch and outputs the neutral wire signal of the second power supply to the double-break micro switch, so that the motor rotates reversely to the first position and the second power supply is cut off.

[0040] Through the above power supply control device, system and fire control system, the first switch unit, the second switch unit and the rotation unit are set. The first switch unit is used to control the access of the first power supply, and the second switch unit is used to control the access of the second power supply; since the first power supply and the second power supply are respectively electrically connected to different power supply terminals of the motor, the motor will rotate in different rotation directions after the first power supply and the second power supply are connected; and the rotation unit is actuated by the rotation of the motor and controls the first switch unit to disconnect after the first power supply is connected, so that the motor is powered off after the load power supply circuit corresponding to the first power supply is turned on, avoiding damage to related structures caused by continuous rotation of the motor, and the same applies to the second power supply; since the control of the motor completely relies on hardware, compared with the prior art, the entire power supply selection function will not be lost due to errors or failures in the driving control ability of the control unit for the motor, and the reliability is relatively high.

[0041] In addition, in the fire control system, the linkage between the channel switching unit, the fire switch unit and multiple micro switches can be utilized to achieve the purpose of power-off after a fire alarm based on hardware on the basis of realizing power supply selection, improving the reliability of fire protection. Description of the Drawings

[0042] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative efforts.

[0043] Figure 1 It is a schematic structural diagram of a power supply control device in an embodiment of the present invention;

[0044] Figure 2 It is a schematic structural diagram of a switch unit including a micro switch in an embodiment of the present invention;

[0045] Figure 3 It is an assembly schematic diagram of a motor rotation dial and a micro switch in an embodiment of the present invention;

[0046] Figure 4 It is a schematic structural diagram of a power supply control system in an embodiment of the present invention;

[0047] Figure 5Schematic diagram of the specific circuit of the channel switching unit in an embodiment of the present invention;

[0048] Figure 6 Schematic diagram of the structure including the DC power supply unit and the acquisition unit in an embodiment of the present invention;

[0049] Figure 7 Schematic diagram of the structure of the fire control system in an embodiment of the present invention;

[0050] Figure 8 Schematic diagram of the specific circuit of the fire switch unit in an embodiment of the present invention. Detailed implementation manners

[0051] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present invention.

[0052] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present application, "a plurality of" means two or more, unless otherwise specifically defined. In the present application, the term "exemplary" is used to mean "serving as an example, illustration, or explanation". Any embodiment described as "exemplary" in the present application is not necessarily construed as being more preferred or having more advantages than other embodiments. In order for any person skilled in the art to implement and use the present invention, the following description is given. In the following description, details are set forth for purposes of explanation. It should be understood that those of ordinary skill in the art can recognize that the present invention can be implemented without using these specific details. In other instances, well-known structures and processes are not elaborated in detail to avoid obscuring the description of the present invention with unnecessary details. Therefore, the present invention is not intended to be limited to the embodiments shown, but is consistent with the broadest scope that conforms to the principles and features disclosed in the present application.

[0053] In a first aspect, as Figure 1 shown, in one embodiment, the present invention provides a power supply control device, which includes a first switch unit, a second switch unit, and a rotation unit.

[0054] Among them, the first access terminal of the first switch unit is used to access the first power supply, the second access terminal of the first switch unit is used to be electrically connected to the first power supply terminal of the motor, the first access terminal of the second switch unit is used to access the second power supply, and the second access terminal of the second switch unit is used to be electrically connected to the second power supply terminal of the motor for controlling the power supply of the load in the fire protection.

[0055] Among them, after the first power supply terminal of the motor accesses the power supply, it can rotate in the first rotation direction, and after the second power supply terminal of the motor accesses the power supply, it can rotate in the second rotation direction. That is to say, the motor will rotate in different rotation directions according to the accessed first power supply and second power supply.

[0056] The rotating unit is fixedly connected to the rotating shaft of the motor, and is used to control the first switch unit to disconnect based on the drive of the motor in the first rotation direction after the motor is connected to the first power supply through the first switch unit; or is used to control the second switch unit to disconnect based on the drive of the motor in the second rotation direction after the motor is connected to the second power supply through the second switch unit.

[0057] Among them, since the rotating unit is fixedly electrically connected to the rotating shaft of the motor, when the motor is powered on and rotates, the rotating unit is also driven to rotate. There is a mechanical connection relationship between the rotating unit and the first switch unit and the second switch unit, so that when the rotating unit rotates in the first rotation direction, it will drive a certain mechanism on the first switch unit to act, thereby triggering the first switch unit to disconnect; similarly, when the rotating unit rotates in the second rotation direction, it will drive a certain mechanism on the second switch unit to act, thereby triggering the second switch unit to disconnect.

[0058] Among them, from the above analysis, it can be seen that the rotation direction of the motor is related to the connected power supply, and the connection of the power supply is related to the corresponding switch unit. Taking the connection of the first power supply as an example, the first switch unit is default in the conducting state. When the first power supply outputs electrical energy, the motor is powered on by connecting to the first power supply through the first switch unit. Since the motor is connected through the first power supply terminal, it rotates in the first rotation direction, driving the rotating unit to rotate. After the rotating unit rotates to a certain extent, it triggers the first switch unit to disconnect, and at this time the motor is powered off. Similarly, taking the connection of the second power supply as an example, the second switch unit is default in the conducting state. When the second power supply outputs electrical energy, the motor is powered on by connecting to the second power supply through the second switch unit. Since the motor is connected through the second power supply terminal, it rotates in the second rotation direction, driving the rotating unit to rotate. After the rotating unit rotates to a certain extent, it triggers the second switch unit to disconnect, and at this time the motor is powered off.

[0059] Among them, as Figure 1 shown, the motor is also electrically connected to the controlled end of the main control switch unit, used to control the switch state of the main control switch unit, and the first input end and the second input end of the main control switch unit are respectively used to connect to the first power supply and the second power supply, and the output end of the main control switch unit is electrically connected to the load.

[0060] Combined with the above analysis, when the motor is powered on and rotates in the first rotation direction, based on the rotation of the motor, the main control switch unit can be triggered to conduct the circuit between its first input end and output end, so as to transmit the electrical energy output by the first power supply to the load. Similarly, when the motor is powered on and rotates in the second rotation direction, based on the rotation of the motor, the main control switch unit can be triggered to conduct the circuit between its second input end and output end, so as to transmit the electrical energy output by the second power supply to the load.

[0061] It can be seen that the motor realizes the power supply selection for the corresponding load by changing the switching state of the main control switch unit, and the rotation of the motor is based on the connected power supply. That is to say, when the first power supply is connected, under the action of the first switch unit and the rotation unit, the motor is automatically prompted to trigger the main control switch unit to conduct the circuit between its first input terminal and the output terminal, and then cut off the power after conduction to maintain the current state. Of course, it can also prevent the motor from continuously rotating and damaging related devices. Similarly, when the second power supply is connected, under the action of the second switch unit and the rotation unit, the motor is automatically prompted to trigger the main control switch unit to conduct the circuit between its second input terminal and the output terminal, and then cut off the power after conduction.

[0062] Through the above power supply control device, the first switch unit, the second switch unit and the rotation unit are set. The first switch unit is used to control the access of the first power supply, and the second switch unit is used to control the access of the second power supply; since the first power supply and the second power supply are respectively electrically connected to different power supply terminals of the motor, the motor will rotate in different rotation directions after the first power supply and the second power supply are connected; and the rotation unit is actuated by the rotation of the motor, and controls the first switch unit to disconnect under the drive of the motor after the first power supply is connected, so that the motor cuts off the power after conducting the load power supply circuit corresponding to the first power supply, avoiding damage to related structures caused by continuous rotation of the motor. The same applies to the second power supply; since the control of the motor completely relies on hardware, compared with the prior art, the entire power supply selection function will not be lost due to errors or failures in the driving control ability of the control unit for the motor, and the reliability is relatively high.

[0063] As Figure 2 shown, in one embodiment, the power supply control device includes a first micro switch 10, a second micro switch 20 and a double-break micro switch 30. The first micro switch 10 and the double-break micro switch 30 constitute the first switch unit, and the second micro switch 20 and the double-break micro switch 30 constitute the second switch unit. The rotation unit includes a motor rotation dial 40.

[0064] Among them, the first access terminal of the first micro switch 10 is used to be electrically connected to the live wire of the first power supply to access the first live wire signal L1, and the second access terminal of the first micro switch 10 is used to be electrically connected to the first power supply terminal of the motor.

[0065] Among them, the first access terminal of the second micro switch 20 is used to be electrically connected to the live wire of the second power supply to access the second live wire signal L2, and the second access terminal of the second micro switch 20 is used to be electrically connected to the second power supply terminal of the motor.

[0066] Among them, the first access terminal of the double-break microswitch 30 is used to be electrically connected to the neutral line of the first power supply and the neutral line of the second power supply respectively, so as to access the first neutral line signal N1 and the second neutral line signal N2. The second access terminal of the double-break microswitch 30 is used to be electrically connected to the neutral terminal of the motor.

[0067] The motor rotation dial 40 is used to control the double-break microswitch 30 to conduct and the first microswitch 10 to disconnect based on the drive of the motor in the first rotation direction, or to control the double-break microswitch 30 to conduct and the second microswitch 20 to disconnect based on the drive of the motor in the second rotation direction.

[0068] Among them, after the first power supply is connected, the first microswitch 10 and the double-break microswitch 30 default to be conducting, and the motor starts to rotate. After rotating to a certain extent, the first microswitch 10 disconnects, and at this time the motor is powered off and stops rotating. For the main control switch unit, based on the aforementioned motor rotation, the circuit between its first input terminal and output terminal has been conducted.

[0069] Among them, after the second power supply is connected, the second microswitch 20 and the double-break microswitch 30 default to be conducting, and the motor starts to rotate. After rotating to a certain extent, the second microswitch 20 disconnects, and at this time the motor is powered off and stops rotating. For the main control switch unit, based on the aforementioned motor rotation, the circuit between its second input terminal and output terminal has been conducted.

[0070] As Figure 3 shown, in one embodiment, the first microswitch 10 and the second microswitch 20 are respectively arranged on both sides of the double-break microswitch 30. The first microswitch 10 includes a first elastic piece 11, the second microswitch 20 includes a second elastic piece 21, the double-break microswitch 30 includes an elastic protrusion 31, and the motor rotation dial 40 includes a groove 41 for receiving the elastic protrusion 31 and a first pressing portion 42 and a second pressing portion 43 respectively arranged on both sides of the groove 41.

[0071] Among them, the elastic protrusion 31 is used to be pressed out of the groove 41 based on the drive of the motor in the first rotation direction or the second rotation direction, so as to control the double-break microswitch 30 to conduct.

[0072] Among them, the first elastic piece 11 is used to be pressed by the first pressing portion 42 based on the drive of the motor in the first rotation direction, so as to control the first microswitch 10 to disconnect.

[0073] Among them, the second elastic piece 21 is used to be pressed by the second pressing portion 43 based on the drive of the motor in the second rotation direction, so as to control the second microswitch 20 to disconnect.

[0074] Among them, the motor rotating paddle 40 is provided with a groove 41. When the elastic protrusion 31 of the double-break microswitch 30 is received in the groove 41, the double-break microswitch 30 is in an off state. At this time, the conduction of the neutral line can be achieved by other means. For example, a neutral line switch can be added. The first access terminal of the neutral line switch is used to be electrically connected to the neutral lines of the first power supply and the second power supply respectively, and the second access terminal of the neutral line switch is used to be electrically connected to the neutral terminal of the motor. The neutral line switch can be used to conduct when the elastic protrusion 31 is received in the groove 41, so as to directly achieve the conduction of the neutral line. When the motor rotates until the elastic protrusion 31 disengages from the groove 41, the neutral line switch can be disconnected.

[0075] In a second aspect, as Figure 4 shown, in an embodiment, the present invention provides a power supply control system, which includes a main control switch unit, a motor, a channel switching unit, a control unit, and the power supply control device in any of the above embodiments.

[0076] Among them, the first input terminal of the channel switching unit is used to access the first power supply, the second input terminal of the channel switching unit is used to access the second power supply, the output terminal of the channel switching unit is electrically connected to the first access terminal of the first switch unit and the first access terminal of the second switch unit respectively, and the controlled terminal of the channel switching unit is electrically connected to the output terminal of the control unit.

[0077] Among them, the first input terminal of the main control switch unit is used to access the first power supply, the second input terminal of the main control switch unit is used to access the second power supply, and the output terminal of the main control switch unit is used to be electrically connected to the load; the main control switch unit is used to control the conduction of the line between its first input terminal and output terminal based on the drive of the motor in the first rotation direction, or to control the conduction of the line between its second input terminal and output terminal based on the drive of the motor in the second rotation direction.

[0078] Among them, the control unit can select whether the motor accesses the first power supply or the second power supply by controlling the channel state of the channel switching unit. After selecting to access the first power supply, the first switch unit and the rotating unit can control the motor to rotate in the first rotation direction according to the specific process mentioned in the above embodiment to achieve the conduction of the line between the first power supply and the load. After selecting to access the second power supply, the second switch unit and the rotating unit can control the motor to rotate in the second rotation direction according to the specific process mentioned in the above embodiment to achieve the conduction of the line between the second power supply and the load.

[0079] Among them, in this embodiment, the first power supply can refer to a standby power supply, and the second power supply can refer to a common power supply. When the control unit is not powered on, the channel selection unit defaults to access the standby power supply.

[0080] Through the above power supply control system, the first switch unit, the second switch unit and the rotation unit are set. The first switch unit is used to control the access of the first power supply, and the second switch unit is used to control the access of the second power supply. Since the first power supply and the second power supply are respectively electrically connected to different power supply terminals of the motor, the motor will rotate in different rotation directions after the first power supply and the second power supply are accessed. The rotation unit is actuated by the rotation of the motor, and after the first power supply is accessed, it controls the first switch unit to disconnect under the drive of the motor, so that the motor is powered off after the load power supply circuit corresponding to the first power supply is turned on, avoiding damage to related structures caused by continuous rotation of the motor. The same applies to the second power supply. Since the control of the motor completely relies on hardware, compared with the prior art, the entire power supply selection function will not be lost due to errors or failures in the driving control ability of the control unit for the motor, and the reliability is relatively high.

[0081] As Figure 5 shown, in one embodiment, the channel switching unit includes a drive subunit and a first relay K1. The drive subunit includes a triode Q1 and a thyristor optocoupler U1.

[0082] Among them, the base of the triode Q1 is electrically connected to the output terminal of the control unit to access the control signal through the resistor R2. The collector of the triode Q1 is electrically connected to the second terminal of the light-emitting part in the thyristor optocoupler U1 (such as the cathode of the light-emitting diode), and the emitter of the triode Q1 is grounded.

[0083] Among them, the first terminal of the light-emitting part in the thyristor optocoupler U1 (such as the anode of the light-emitting diode) is used to access the working voltage (such as a working voltage of +5V). The first terminal of the photosensitive part in the thyristor optocoupler U1 (such as the first terminal of the photosensitive thyristor) is used to be electrically connected to the live wire of the first power supply and / or the live wire of the second power supply to access the live wire voltage (such as accessing the C-phase electricity NC of the three-phase electricity in the second power supply used as the common power supply). The second terminal of the photosensitive part in the thyristor optocoupler U1 (such as the second terminal of the photosensitive thyristor) is electrically connected to the first terminal of the coil part in the first relay K1.

[0084] Among them, the second end of the coil part in the first relay K1 is used to be electrically connected to the neutral wire of the first power supply and / or the neutral wire of the second power supply to access the neutral wire voltage (such as accessing the N-phase power NN of the three-phase power in the second power supply used as the normal power supply), the first input end of the contact part in the first relay K1 is used to access the first power supply (such as accessing the N-phase power RN and the C-phase power RC of the three-phase power in the first power supply used as the standby power supply), the second input end of the contact part in the first relay K1 is used to access the second power supply (such as accessing the N-phase power NN and the C-phase power NC of the three-phase power in the second power supply used as the normal power supply), and the output end of the contact part in the first relay K1 is electrically connected to the first access end of the first switch unit and the first access end of the second switch unit respectively to output the N-phase power RN and the C-phase power RC to the first switch unit or output the N-phase power NN and the C-phase power NC to the second switch unit.

[0085] Among them, when the control unit outputs a low-level control signal, the triode Q1 is turned off, the thyristor optocoupler U1 is turned off, and the first relay K1 is not powered on. At this time, the N-phase power RN and the C-phase power RC are output to the first switch unit; when the control unit outputs a high-level control signal, the triode Q1 is turned on, the thyristor optocoupler U1 is turned on, and the first relay K1 is powered on and attracted. At this time, the N-phase power NN and the C-phase power NC are output to the second switch unit.

[0086] Such as Figure 6 As shown, in one embodiment, the power supply control system further includes a DC power supply unit.

[0087] Among them, the input end of the DC power supply unit is used to access the first power supply and the second power supply respectively, and the output end of the DC power supply unit is electrically connected to the power supply end of the control unit.

[0088] The DC power supply unit is used to convert and process the alternating current input by the first power supply or the second power supply and output the corresponding direct current to the control unit.

[0089] Among them, the control unit usually works in a DC low-voltage environment. For example, taking the MCU as an example, its working voltage is usually 5V or 3.3V, while the first power supply and the second power supply are usually high-voltage alternating currents. Therefore, conversion processing is required through the DC power supply unit.

[0090] Such as Figure 6 As shown, in one embodiment, the power supply control system further includes an acquisition unit.

[0091] Among them, the acquisition unit is electrically connected to the input end of the control unit and is used to acquire the power supply signals of the first power supply and / or the second power supply and feedback them to the control unit.

[0092] Among them, in Figure 6Among them, the acquisition unit simultaneously acquires the power supply signals of the first power supply and the second power supply. In other embodiments, it is also possible to only acquire the power supply signal of the second power supply, which is used as the common power supply, to reduce costs.

[0093] Among them, based on the acquisition unit, the control unit can judge whether it is suitable to select the first power supply or the second power supply according to the feedback power supply signal, so as to output a corresponding control signal to the channel switching unit.

[0094] In one embodiment, the acquisition unit includes a voltage acquisition sub-unit and / or a current acquisition sub-unit.

[0095] Among them, for the voltage acquisition sub-unit, it mainly realizes the detection of overvoltage and undervoltage. For the current acquisition sub-unit, it mainly realizes the detection of overload and short circuit.

[0096] In the third aspect, as Figure 7 shown, in one embodiment, the present invention provides a fire control system, which includes a fire switch unit, a neutral line switch, and the power supply control system in any of the above embodiments. The power supply control system includes the above-mentioned power supply control device (such as Figure 3 the power supply control device shown).

[0097] Among them, the first live wire input end of the fire switch unit is electrically connected to the first live wire output end of the channel switching unit to access the first live wire signal L1. The second live wire input end of the fire switch unit is electrically connected to the second live wire output end of the channel switching unit to access the second live wire signal L2. The neutral line input end of the fire switch unit is electrically connected to the neutral line output unit of the channel switching unit to access the first neutral line signal N1 or the second neutral line signal N2.

[0098] Among them, the first live wire output end and the second live wire output end corresponding to the first live wire input end in the fire switch unit are respectively electrically connected to the first access end of the first micro switch 10 and the first access end of the second micro switch 20 to output the first live wire signal L1. The third live wire output end and the fourth live wire output end corresponding to the second live wire input end in the fire switch unit are respectively electrically connected to the first access end of the second micro switch 20 and the first access end of the first micro switch 10 to output the second live wire signal L2. The first neutral line output end and the second neutral line output end corresponding to the neutral line input end in the fire switch unit are respectively electrically connected to the first access end of the double-break micro switch 30 and the first access end of the neutral line switch to output the first neutral line signal N1 or the second neutral line signal N2.

[0099] Among them, the second access end of the neutral line switch is used to be electrically connected to the neutral end of the motor to output the accessed first neutral line signal N1 or the second neutral line signal N2 to the motor.

[0100] Among them, the controlled end of the fire switch unit is used to access the fire signal, and is used to control the output selection of the live line signal and the neutral line signal according to the fire signal.

[0101] Specifically, when a fire signal indicating that no fire alarm has occurred is received, the fire switch unit outputs the first neutral line signal N1 or the second neutral line signal N2 to the neutral line switch, outputs the first live line signal L1 to the first micro switch 10, and outputs the second live line signal L2 to the second micro switch 20.

[0102] Also refer to Figure 3 and Figure 7 If the first power supply has power output at this time, the first micro switch 10 is turned on, and the double-split micro switch 30 is disconnected because the elastic protrusion 31 is accommodated in the groove 41. At this time, the connected first power supply forms a current loop to the motor through the first micro switch 10 and the neutral line switch. The motor is powered on and rotates in the first rotation direction, and the motor rotation paddle 40 rotates accordingly until the first spring piece 11 of the first micro switch 10 is pressed by the first pressing part 42 of the motor rotation paddle 40, the first micro switch 10 is disconnected, the motor is powered off and the first power supply continues to supply power to the load. If a fire signal indicating a fire alarm is subsequently connected, the fire switch unit outputs the first neutral line signal N1 or the second neutral line signal N2 to the double-part microswitch 30, outputs the first live line signal L1 to the second microswitch 10, and outputs the first live line signal L2 to the second microswitch 20. At this time, since the elastic protrusion 31 is pressed due to being out of the groove 41, the double-part microswitch 30 is turned on. Since the second microswitch 20 is also turned on, the first power supply connected at this time forms a current loop to the motor through the second microswitch 10 and the double-part microswitch 30. The motor is powered on and reverses to the second rotation direction. The motor rotation paddle 40 rotates accordingly until the elastic protrusion 31 is received by the groove 41, the double-part microswitch 30 is disconnected, the motor is powered off and the load is powered off to achieve fire protection.

[0103] Similarly, refer to Figure 3 and Figure 7, if the second power supply outputs electrical energy at this time, the second microswitch 20 is turned on, and the double-break microswitch 30 is turned off because the elastic protrusion 31 is received in the groove 41. At this time, the second power supply connected is formed into a current loop to the motor through the second microswitch 20 and the neutral wire switch. The motor is powered on and rotates in the second rotation direction. The motor rotating dial 40 rotates accordingly until the second elastic piece 21 of the second microswitch 20 is pressed by the second pressing portion 43 of the motor rotating dial 40, and the second microswitch 20 is turned off. The motor is powered off and the second power supply continues to supply power to the load. If a fire signal indicating a fire alarm is subsequently connected, the fire switch unit outputs the first neutral wire signal N1 or the second neutral wire signal N2 to the double-break microswitch 30, outputs the first live wire signal L1 to the second microswitch 10, and outputs the first live wire signal L2 to the second microswitch 20. At this time, since the elastic protrusion 31 is pressed because it disengages from the groove 41, the double-break microswitch 30 is turned on. Since the first microswitch 10 is also turned on, the second power supply connected at this time forms a current loop to the motor through the first microswitch 20 and the double-break microswitch 30. The motor is powered on and reversely rotates in the first rotation direction. The motor rotating dial 40 rotates accordingly until the elastic protrusion 31 is received in the groove 41, and the double-break microswitch 30 is turned off. The motor is powered off and the load is powered off, realizing fire protection.

[0104] Through the above fire control system, the first switch unit, the second switch unit and the rotating unit are provided. The first switch unit is used to control the access of the first power supply, and the second switch unit is used to control the access of the second power supply; since the first power supply and the second power supply are respectively electrically connected to different power supply terminals of the motor, the motor will rotate in different rotation directions after the first power supply and the second power supply are connected; and the rotating unit is actuated by the rotation of the motor and controls the first switch unit to turn off under the drive of the motor after the first power supply is connected, so that the motor is powered off after the load power supply circuit corresponding to the first power supply is turned on, avoiding damage to related structures caused by continuous rotation of the motor. The same applies to the second power supply; since the control of the motor completely relies on hardware, compared with the prior art, the entire power supply selection function will not be lost due to errors or failures in the driving control ability of the control unit for the motor, and the reliability is relatively high.

[0105] As Figure 8 shown, in one embodiment, the fire switch unit includes a second relay K2.

[0106] Among them, the coil part of the second relay K2 is used to connect the fire signal, and the contact parts of the second relay K2 are respectively electrically connected to the channel switching unit (such as the first relay K1), the first switch unit, the second switch unit and the neutral wire switch.

[0107] In the above embodiments, the descriptions of the respective embodiments have their own emphases. For the parts not described in detail in a certain embodiment, reference may be made to the detailed descriptions of other embodiments above, and they will not be elaborated here.

[0108] The above has introduced in detail a solid-state power circuit, a motor control system, and a wind power yaw system provided by the present invention. Specific examples are used in this article to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those skilled in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present invention.

[0109] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

Claims

1. A power supply control device, characterized in that: The power supply control device includes a first switch unit, a second switch unit, a motor and a rotating unit; The first access end of the first switch unit is used to access a first power supply, the second access end of the first switch unit is used to electrically connect to a first power supply end of a motor used to control load power supply in fire protection, the first access end of the second switch unit is used to access a second power supply, and the second access end of the second switch unit is used to electrically connect to a second power supply end of the motor; The rotating unit is fixedly connected to the rotating shaft of the motor, and is used to control the first switch unit to be disconnected based on the driving of the motor in the first rotation direction after the motor is connected to the first power supply through the first switch unit; Or it is used to control the second switch unit to be disconnected based on the driving of the motor in the second rotation direction after the motor is connected to the second power supply through the second switch unit.

2. The power supply control device according to claim 1, characterized in that: The power supply control device comprises a first micro switch, a second micro switch and a double-split micro switch, the first micro switch and the double-split micro switch constitute the first switch unit, the second micro switch and the double-split micro switch constitute the second switch unit, and the rotating unit comprises a motor rotating paddle; The first access end of the first micro switch is used to be electrically connected to the live wire of the first power supply, and the second access end of the first micro switch is used to be electrically connected to the first power supply end of the motor; The first access end of the second micro switch is used to be electrically connected to the live wire of the second power supply, and the second access end of the second micro switch is used to be electrically connected to the second power supply end of the motor; The first access end of the dual-branch micro switch is used to be electrically connected to the neutral line of the first power supply and the neutral line of the second power supply respectively, and the second access end of the dual-branch micro switch is used to be electrically connected to the neutral end of the motor; The motor rotation paddle is used to control the two-part micro switch to be turned on and the first micro switch to be turned off based on the driving of the motor in the first rotation direction, or to control the two-part micro switch to be turned on and the second micro switch to be turned off based on the driving of the motor in the second rotation direction.

3. The power supply control device according to claim 2, characterized in that: The first micro switch and the second micro switch are respectively arranged on both sides of the two-part micro switch, the first micro switch includes a first spring sheet, the second micro switch includes a second spring sheet, the two-part micro switch includes an elastic protrusion, and the motor rotation paddle includes a groove for accommodating the elastic protrusion and a first pressing part and a second pressing part respectively arranged on both sides of the groove; The elastic protrusion is used to disengage from the groove and be pressed based on the driving of the motor in the first rotation direction or the second rotation direction, so as to control the two-part micro switch to be turned on; The first elastic sheet is used to be pressed by the first pressing part based on the driving of the motor in the first rotation direction, so as to control the first micro switch to be disconnected; The second elastic sheet is used to be pressed by the second pressing portion based on the driving of the motor in the second rotation direction, so as to control the second micro switch to be disconnected.

4. A power supply control system, characterized in that: The power supply control system comprises a main control switch unit, a motor, a channel switching unit, a control unit and the power supply control device according to any one of claims 1 to 3; The first input end of the channel switching unit is used to connect to the first power supply, the second input end of the channel switching unit is used to connect to the second power supply, the output end of the channel switching unit is electrically connected to the first access end of the first switch unit and the first access end of the second switch unit respectively, and the controlled end of the channel switching unit is electrically connected to the output end of the control unit; The first input end of the main control switch unit is used to connect to the first power supply, the second input end of the main control switch unit is used to connect to the second power supply, and the output end of the main control switch unit is used to be electrically connected to the load; the main control switch unit is used to control the line conduction between its own first input end and output end based on the driving of the motor in the first rotation direction, or to control the line conduction between its own second input end and output end based on the driving of the motor in the second rotation direction.

5. The power supply control system according to claim 4, characterized in that: The channel switching unit includes a driving subunit and a first relay; The input end of the driving subunit is electrically connected to the output end of the control unit, the output end of the driving subunit is electrically connected to the coil part in the first relay, the first input end of the contact part in the first relay is used to connect to the first power supply, the second input end of the contact part in the first relay is used to connect to the second power supply, and the output end of the contact part in the first relay is electrically connected to the first access end of the first switch unit and the first access end of the second switch unit respectively.

6. The power supply control system according to claim 5, characterized in that: The driving subunit includes a triode and a thyristor optocoupler; The base of the transistor is electrically connected to the output end of the control unit, the collector of the transistor is electrically connected to the second end of the light-emitting part of the thyristor optocoupler, and the emitter of the transistor is used for grounding; The first end of the light-emitting part in the thyristor optocoupler is used to access the working voltage, the first end of the light-sensitive part in the thyristor optocoupler is used to be electrically connected to the live wire of the first power supply and / or the live wire of the second power supply, and the second end of the light-sensitive part in the thyristor optocoupler is electrically connected to the first end of the coil part in the first relay; The second end of the coil portion in the first relay is used to be electrically connected to the neutral line of the first power source and / or the neutral line of the second power source.

7. A fire control system, characterized in that: The fire control system comprises a fire switch unit, a neutral line switch and a power supply control system according to any one of claims 4 to 6, and the power supply control system comprises the power supply control device according to claim 3; The channel switching unit is electrically connected to the first micro switch, the second micro switch and the double-branch micro switch respectively through the fire switch unit, and the fire switch unit is also used to be electrically connected to the neutral end of the motor through the neutral line switch; The controlled end of the fire switch unit is used to receive a fire signal, and is used to control the output selection of the live line signal and the neutral line signal according to the fire signal.

8. The fire control system according to claim 7, characterized in that: The first live wire input end of the fire switch unit is electrically connected to the first live wire output end of the channel switching unit, the second live wire input end of the fire switch unit is electrically connected to the second live wire output end of the channel switching unit, and the zero wire input end of the fire switch unit is electrically connected to the zero wire output end of the channel switching unit; The first live wire output terminal and the second live wire output terminal corresponding to the first live wire input terminal in the fire switch unit are electrically connected to the first access terminal of the first micro switch and the first access terminal of the second micro switch respectively, the third live wire output terminal and the fourth live wire output terminal corresponding to the second live wire input terminal in the fire switch unit are electrically connected to the first access terminal of the second micro switch and the first access terminal of the first micro switch respectively, and the first zero line output terminal and the second zero line output terminal corresponding to the zero line input terminal in the fire switch unit are electrically connected to the first access terminal of the double-branch micro switch and the first access terminal of the zero line switch respectively; The second access end of the neutral line switch is used to be electrically connected to the neutral end of the motor.

9. The fire control system according to claim 7, characterized in that: The fire switch unit includes a second relay; The coil part in the second relay is used to receive the fire signal, and the contact part in the second relay is electrically connected to the channel switching unit, the first switch unit, the second switch unit and the neutral line switch respectively.

10. The fire control system according to claim 9, characterized in that: The fire control system specifically includes the power supply control system according to claim 5; When the first relay controls the output of the first power supply and the coil portion of the second relay is connected to a fire signal indicating that no fire alarm has occurred, the contact portion of the second relay outputs the live signal of the first power supply to the first micro switch and outputs the neutral signal of the first power supply to the neutral end of the motor through the neutral switch, so that the motor rotates to the first position and the first power supply is normally supplied; If the coil portion of the second relay is subsequently connected to a fire signal indicating a fire alarm, the contact portion of the second relay outputs the live line signal of the first power supply to the second microswitch and outputs the neutral line signal of the first power supply to the double-point microswitch, so that the motor reverses to the second position and disconnects the first power supply.

11. The fire control system according to claim 9, characterized in that: The fire control system specifically includes the power supply control system according to claim 5; When the first relay controls the output of the second power supply and the coil portion of the second relay is connected to a fire signal indicating that no fire alarm has occurred, the contact portion of the second relay outputs the live signal of the second power supply to the second micro switch and outputs the neutral signal of the second power supply to the neutral end of the motor through the neutral switch, so that the motor rotates to the second position and the second power supply supplies power normally; If the coil portion of the second relay is subsequently connected to a fire signal indicating a fire alarm, the contact portion of the second relay outputs the live line signal of the second power supply to the first microswitch and outputs the neutral line signal of the second power supply to the double-point microswitch, so that the motor reverses to the first position and disconnects the second power supply.

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