CN215871251U - Radar control circuit and rotary radar - Google Patents
Radar control circuit and rotary radar Download PDFInfo
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- CN215871251U CN215871251U CN202121216299.6U CN202121216299U CN215871251U CN 215871251 U CN215871251 U CN 215871251U CN 202121216299 U CN202121216299 U CN 202121216299U CN 215871251 U CN215871251 U CN 215871251U
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Abstract
The embodiment of the utility model discloses a radar control circuit and a rotary radar, wherein the rotary radar comprises a motor and a wireless power supply receiving coil, the radar control circuit comprises a power supply, a main control chip, a motor driving device and a wireless power supply device, the main control chip is respectively connected with the power supply, the motor driving device and the wireless power supply device, the motor driving device is connected with the motor, the wireless power supply device is used for transmitting electric energy to the wireless power supply receiving coil, the main control chip is used for controlling the motor driving device to drive the motor to rotate, and for controlling the wireless power supply device to emit electrical energy, in the radar control circuit of the embodiment of the utility model, the motor driving device and the wireless power supply device are controlled by the same main control chip, the number of chips is reduced, on one hand, the cost is reduced, on the other hand, the circuit board is simple, the area of the circuit board can be reduced, and the miniaturization design of the rotary radar is facilitated.
Description
Technical Field
The embodiment of the utility model relates to the technical field of radars, in particular to a radar control circuit and a rotary radar.
Background
Along with the development of radar technology, the rotation type radar is owing to can realize all-round scanning by the wide application in unmanned aerial vehicle, unmanned vehicles or unmanned machines people etc. on the unmanned equipment.
Mainly include rotatable part and static part in rotatory radar, the rotatable part is by motor drive, and simultaneously, in order to avoid the power supply line to take place the winding when the rotatable part is rotatory, through wireless power supply between static part and the rotatable part, concretely, static part is provided with wireless power supply transmitting coil, the rotatable part is provided with wireless power supply receiving coil, realize electric energy wireless transmission through magnetic induction between two coils, based on this, in the current rotatory radar, wireless power supply transmitting coil is through a main control chip control, the rotation of motor is controlled through another main control chip, it is too much to cause the main control chip on the circuit board that lies in static part in the rotatory radar, and is with high costs, and circuit board circuit is complicated, the area increases, be unfavorable for rotatory radar miniaturized design.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model aims to: the utility model provides a radar control circuit and rotatory radar to adopt two chips to control wireless power supply and motor rotation respectively in solving current rotatory radar, cause with high costs, the big problem of circuit board area.
To achieve the purpose, the embodiment of the utility model adopts the following technical scheme:
in a first aspect, a radar control circuit is provided and applied to a rotating radar, the rotating radar includes a motor and a wireless power supply receiving coil, the radar control circuit includes a power supply, a main control chip, a motor driving device and a wireless power supply device, the main control chip respectively with the power supply the motor driving device and the wireless power supply device connects, the motor driving device with the motor is connected, the wireless power supply device is used for transmitting electric energy to the wireless power supply receiving coil, the main control chip is used for controlling the motor driving device drives the motor to rotate and is used for controlling the wireless power supply device transmits the electric energy.
Optionally, the motor driving device includes an H-bridge circuit, a driver, and a current detection circuit, an input end of the H-bridge circuit is connected to the main control chip through the driver, an output end of the H-bridge circuit is connected to the motor, an input end of the current detection circuit is connected to an output end of the H-bridge circuit, an output end of the current detection circuit is connected to the main control chip, and the driver is configured to amplify a control signal output by the main control chip to drive the H-bridge circuit to output a current to drive the motor to rotate.
Optionally, the H-bridge circuit is a three-phase H-bridge circuit, each phase of the H-bridge circuit includes a first NMOS transistor and a second NMOS transistor, the drain electrode of the first NMOS tube is connected with a motor power supply, the source electrode of the first NMOS tube is connected with the drain electrode of the second NMOS tube, the grid electrode of the first NMOS tube is connected with the high-energy control pin of the main control chip through a first resistor, one end of the first resistor connected with the high-energy control pin of the main control chip is grounded through a second resistor, the drain electrode of the second NMOS tube is connected with the source electrode of the first NMOS tube, the grid electrode of the second NMOS tube is connected with the low-energy control pin of the main control chip through a third resistor, one end of the third resistor connected with the low-energy control pin of the main control chip is grounded through a fourth resistor, and the source electrode of the second NMOS tube is grounded through a fifth resistor, and the common node of the first NMOS tube and the second NMOS tube is used as the output end of the H-bridge circuit and is connected with the motor.
Optionally, the current detection circuit includes a first output terminal and a second output terminal, the first output terminal is connected to a common node of the fifth resistor and the second NMOS transistor through a sixth resistor, the second output terminal is connected to one end of the fifth resistor, which is grounded, and the first output terminal and the second output terminal are connected to the first current detection pin and the second current detection pin of the main control chip, respectively.
Optionally, the motor driving device further includes a temperature detection circuit, an output end of the temperature detection circuit is connected to the main control chip, and the temperature detection circuit is configured to detect a temperature of the H-bridge circuit.
Optionally, the motor driving device further includes an optical encoder, and an output end of the optical encoder is connected to the main control chip.
Optionally, the motor driving device further includes a first voltage detection circuit, an input end of the first voltage detection circuit is connected to an output end of the motor driving device, and an output end of the first voltage detection circuit is connected to the voltage detection pin of the main control chip.
Optionally, the wireless power supply device includes a full-bridge chip, a wireless power supply transmitting coil and a second voltage detection circuit, the input end of the full-bridge chip is connected with the main control chip, the output end of the full-bridge chip is connected with the wireless power supply transmitting coil, the input end of the second voltage detection circuit is connected with the wireless power supply transmitting coil, and the output end of the second voltage detection circuit is connected with the main control chip.
Optionally, the model of the main control chip is PAC5524QF, and the model of the full bridge chip is NU1020 QCDB.
In a second aspect, a rotary radar is provided, where the rotary radar includes a motor, a wireless power receiving coil, and the radar control circuit of any one of the first aspect, an output end of a motor driving device in the radar control circuit is connected to the motor, and the wireless power receiving coil is configured to receive electric energy transmitted by a wireless power supply device in the radar control circuit.
The radar control circuit of the embodiment of the utility model is applied to a rotary radar, the rotary radar comprises a motor and a wireless power supply receiving coil, the radar control circuit comprises a power supply, a main control chip, a motor driving device and a wireless power supply device, the main control chip is respectively connected with the power supply, the motor driving device and the wireless power supply device, the motor driving device is connected with the motor, the wireless power supply device is used for transmitting electric energy to the wireless power supply receiving coil, the main control chip is used for controlling the motor driving device to drive the motor to rotate, and for controlling the wireless power supply device to emit electrical energy, in the radar control circuit of the embodiment of the utility model, the motor driving device and the wireless power supply device are controlled by the same main control chip, the number of chips is reduced, on one hand, the cost is reduced, on the other hand, the circuit board is simple, the area of the circuit board can be reduced, and the miniaturization design of the rotary radar is facilitated.
Drawings
The utility model is explained in more detail below with reference to the figures and examples.
FIG. 1 is a schematic diagram of a rotary radar according to an embodiment of the present invention;
fig. 2 is a block diagram of a radar control circuit according to an embodiment of the present invention;
FIG. 3 is a block diagram of a radar control circuit according to another embodiment of the present invention;
FIG. 4 is a diagram of a main control chip according to an embodiment of the present invention;
FIGS. 5-7 are schematic diagrams of an A-phase, B-phase, and C-phase H-bridge circuit according to an embodiment of the present invention;
FIG. 8 is a schematic circuit diagram of a wireless power supply apparatus according to an embodiment of the present invention;
in the figure:
10. a power source; 20. a main control chip; 30. a motor drive device; 301. a driver; 302. an H-bridge circuit; 303. a current detection circuit; 304. a first voltage detection circuit; 305. a temperature detection circuit; 306. an optical encoder; 40. a wireless power supply device; 401. a full-bridge chip; 402. a wireless power supply transmitting coil; 403. a second voltage detection circuit; 50. a motor; 60. a wirelessly powered receive coil.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; the connection can be mechanical connection, electrical connection or wireless communication connection; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example one
Fig. 1 is a schematic diagram of a rotary radar according to an embodiment of the present invention, as shown in fig. 1, in an example, the rotary radar includes a rotatable circuit board and a stationary circuit board, the rotatable circuit board may be provided with a wireless communication module, a wireless power receiving coil, and a motor driving device, the stationary circuit board is provided with a wireless communication module and a wireless power transmitting coil, the stationary circuit board and the rotatable circuit board wirelessly transmit power and the motor drives an antenna of the rotary radar to rotate, and the stationary circuit board and the rotatable circuit board wirelessly transmit power and wirelessly communicate control signals.
As shown in fig. 2, the radar control circuit according to the embodiment of the present invention is applied to a rotary radar including a wireless power receiving coil 60 and a motor 50, and includes a power supply 10, a main control chip 20, a motor driving device 30, and a wireless power supply device 40.
The power source 10, the main control chip 20, and the wireless power supply device 40 may be integrated on a circuit board, and particularly, in the rotary radar shown in fig. 1, the power source 10, the main control chip 20, and the wireless power supply device 40 may be integrated on a stationary circuit board, and the motor driving device 30 and the wireless power supply receiving coil 60 of the rotary radar may be integrated on a rotating circuit board.
In the embodiment of the present invention, the motor driving device 30 may be a circuit that outputs current to drive the motor to rotate under the control of the main control chip 20; the wireless power supply device 40 may include a wireless power supply transmission coil that generates a varying electromagnetic field under the control of the main control chip 20, so that the wireless power supply reception coil 60 on the circuit board rotating in the rotary radar induces the varying electromagnetic field to generate an induced current.
As shown in fig. 2, the main control chip 20 is respectively connected to the power supply 10, the motor driving device 30 and the wireless power supply device 40, an output end of the motor driving device 30 is connected to the motor 50, the wireless power supply device 40 is configured to transmit power to the wireless power supply receiving coil 60, and the main control chip 20 is configured to control the motor driving device 30 to output a driving current to drive the motor 50 to rotate and control the wireless power supply device 40 to transmit power.
The radar control circuit of the embodiment of the utility model has the following working principle:
after the rotary radar is started, the power supply 10 supplies power to the main control chip 20 and the wireless power supply device 40, the main control chip 20 controls the wireless power supply device 40 to emit a changing electromagnetic field, the wireless power supply receiving coil 60 in the rotary radar generates an induced current after sensing the changing electromagnetic field emitted by the wireless power supply device 40 and outputs the induced current to the motor driving device 30, the main control chip 20 generates a control signal and outputs the control signal to the motor driving device 30 through the wireless communication module, and the motor driving device 30 outputs a driving current to drive the motor 50 to rotate after receiving the control signal.
The radar control circuit of the embodiment of the utility model is applied to a rotary radar, the rotary radar comprises a motor and a wireless power supply receiving coil, the radar control circuit comprises a power supply, a main control chip, a motor driving device and a wireless power supply device, the main control chip is respectively connected with the power supply, the motor driving device and the wireless power supply device, the motor driving device is connected with the motor, the wireless power supply device is used for transmitting electric energy to the wireless power supply receiving coil, the main control chip is used for controlling the motor driving device to drive the motor to rotate, and for controlling the wireless power supply device to emit electrical energy, in the radar control circuit of the embodiment of the utility model, the motor driving device and the wireless power supply device are controlled by the same main control chip, the number of chips is reduced, on one hand, the cost is reduced, on the other hand, the circuit board is simple, the area of the circuit board can be reduced, and the miniaturization design of the rotary radar is facilitated.
Example two
As shown in fig. 3, a block diagram of a radar control circuit according to a second embodiment of the present invention is shown, and as shown in fig. 3, a motor driving apparatus 30 according to the first embodiment of the present invention includes an H-bridge circuit 302, a driver 301, and a current detection circuit 303.
The input end of the H-bridge circuit 302 is connected to the main control chip 20 through the driver 301, the output end of the H-bridge circuit 302 is connected to the motor 50, the input end of the current detection circuit 303 is connected to the output end of the H-bridge circuit 302, the output end of the current detection circuit 303 is connected to the main control chip 20, and the driver 301 is configured to amplify a control signal output by the main control chip 20 to drive the H-bridge circuit 302 to output a driving current to drive the motor 50 to rotate.
Fig. 4 is a schematic diagram of a main control chip 20 according to an embodiment of the present invention, in an example, the main control chip 20 is a PAC5524QF having a plurality of pins, in the present invention, the motor 50 has three windings, the H-bridge circuit 302 is a three-phase H-bridge circuit, that is, each phase H-bridge circuit is used for outputting a driving current to one winding of the motor 50, fig. 5, 6 and 7 are schematic diagrams of an a-phase, a B-phase and a C-phase H-bridge circuit, and the motor driving apparatus 30 according to an embodiment of the present invention is illustrated by using the a-phase H-bridge circuit as an example.
As shown in fig. 4 and 5, the H-bridge circuit 302 includes a first NMOS transistor Q1, a second NMOS transistor Q2, and a motor power VCC _ MOT, where the motor power VCC _ MOT is a power obtained by transforming a voltage after a current is induced by the wireless power receiving coil 60 during wireless power transmission. The drain of the first NMOS transistor Q1 is connected to a motor power supply VCC _ MOT, the source of the first NMOS transistor Q1 is connected to the drain of the second NMOS transistor Q2, the gate of the first NMOS transistor Q1 is connected to the high-energy control pin CH _ a of the main control chip 20 through a first resistor R1, the end of the first resistor R1 connected to the high-energy control pin CH _ a of the main control chip 20 is grounded through a second resistor R2, the drain of the second NMOS transistor Q2 is connected to the source of the first NMOS transistor Q1, the gate of the second NMOS transistor Q2 is connected to the low-energy control pin CL _ a of the main control chip 20 through a third resistor R3, the end of the third resistor R3 connected to the low-energy control pin CL _ a of the main control chip 20 is grounded through a fourth resistor R4, the source of the second NMOS transistor Q2 is grounded through a fifth resistor R5, and the common node of the first NMOS transistor Q1 and the second NMOS transistor Q2 is connected to the output terminal SH 302 of the motor output terminal 50 as a SH circuit.
It should be noted that the gate of the first NMOS transistor Q1 is connected to the high-energy control pin CH _ a of the main control chip 20 through the first resistor R1, and the gate of the second NMOS transistor Q2 is connected to the low-energy control pin CL _ a of the main control chip 20 through the third resistor R3, which may refer to: after the high-power control pin CH _ a and the low-power control pin CL _ a of the main control chip 20 output control signals, the control signals are sent to the driver 301 through the wireless communication module, and the driver 301 amplifies the control signals and inputs the amplified control signals to the gate of the first NMOS transistor Q1 or the gate of the second NMOS transistor Q2.
The H-bridge circuit 302 operates as follows:
after the wireless power receiving coil 60 induces the electromagnetic field to change and generate an induced current, the motor power VCC _ MOT has a voltage to the ground, when it is needed to control the rotation or speed regulation of the motor 50, after the high-energy control pin CH _ a and the low-energy control pin CL _ a of the main control chip 20 output control signals, the control signals are sent to the rotating circuit board through the wireless communication module on the stationary circuit board, after the driver 301 on the rotating circuit board receives the control signals, the control signals are amplified to drive the first NMOS transistor Q1 and the second NMOS transistor Q2 to be turned on or off, the current of the motor power VCC _ MOT is output to the output terminal SH _ a through the first NMOS transistor Q1 and then flows into a winding of the motor 50, and the motor 50 rotates or changes the rotating speed, the rotating direction, and the like.
Although the connection of the H-bridge circuit 302 to the corresponding pin of the main control chip 20 is described as the a-phase H-bridge circuit, the connection of the B-phase and C-phase H-bridge circuits to the corresponding pin of the main control chip 20 is shown in fig. 6 and 7, and is not described in detail here, and similarly, the control principle of the B-phase and C-phase H-bridge circuits is the same as that of the a-phase and is also not described in detail here.
In the embodiment of the utility model, the motor 50 is driven to rotate by the three-phase H-bridge circuit, stepless speed regulation can be accurately carried out on the motor 50, and moreover, the driver 301 amplifies the control signal of the main control chip 20 to drive the H-bridge circuit 302, so that the problems that the main control chip 20 needs to output a high-power control signal, the processing capacity and the wireless communication quality are reduced due to high power consumption of the main control chip 20 and the wireless communication module can be avoided, and the power consumption of the main control chip 20 and the wireless communication module is reduced.
As shown in fig. 4 to 5, in an alternative embodiment of the present invention, the current detection circuit 303 includes a first output terminal a _ ISNS _ P and a second output terminal a _ ISNS _ N, the first output terminal a _ ISNS _ P is connected to a common node of a fifth resistor R5 and a second NMOS transistor Q2 through a sixth resistor R6, the second output terminal a _ ISNS _ N is connected to one end of the fifth resistor R5, a first capacitor C1 is further connected between the first output terminal a _ ISNS _ P and the second output terminal a _ ISNS _ N, the first output terminal a _ ISNS _ P and the second output terminal a _ ISNS _ N are respectively connected to a first current detection pin a _ ISNS _ P and a second current detection pin a _ ISNS _ N of the main control chip, the current detection circuit 303 may detect a current value output to the motor 50 and feed back the current value to the main control chip 20, the main control chip 20 may perform overcurrent protection and adjust an output current value according to the main control chip, not only can the overcurrent protection of the motor be realized, but also the rotating speed of the motor 50 can be accurately controlled by adjusting the output current.
As shown in fig. 3 and 4, in another alternative embodiment of the present invention, the motor driving apparatus 30 further includes a temperature detection circuit 305, an output end of the temperature detection circuit 305 is connected to a temperature detection pin TEMP of the main control chip 20, the temperature detection circuit is configured to detect a temperature of the H-bridge circuit 302, in an example, the temperature detection circuit 305 may include a thermistor disposed in the H-bridge circuit 302, the thermistor senses the temperature of the H-bridge circuit 302 and outputs a current value, the current value passes through a voltage sampling resistor and outputs a voltage value to the temperature detection pin TEMP, and the main control chip 20 compares an input voltage value of the temperature detection pin TEMP with a reference voltage value to determine whether the temperature of the H-bridge circuit 302 is too high for cooling, so as to avoid damage of the H-bridge circuit 302 due to the too high temperature.
In yet another alternative embodiment of the present invention, as shown in fig. 3 and 4, the motor driving device 30 further includes an optical encoder 306, an output end of the optical encoder 306 is connected to the main control chip 20, in one example, the optical encoder 306 includes an optical transceiver disposed on a stationary circuit board and a code wheel disposed on a rotating circuit board, the optical transceiver transmits an optical signal to the code wheel, the optical signal is reflected by the code wheel and then received by an optical receiver, thereby generating a pulse code signal, the pulse signal is transmitted to the main control chip 20 via the wireless communication module, and the main control chip 20 can control the motor driving device 30 to output a driving current according to the code signal output by the optical encoder to control a rotation speed and a rotation direction of the motor, thereby realizing precise control of the rotation angle of the radar antenna.
In an alternative embodiment, as shown in fig. 3, the motor driving device 30 further includes a first voltage detection circuit 304, an input terminal of the first voltage detection circuit 304 is connected to an output terminal of the motor driving device 30, an output terminal of the first voltage detection circuit 304 is connected to a voltage detection pin of the main control chip 20, as shown in fig. 4, in an example, the first voltage detection circuit 304 includes an eighth resistor R8 and a ninth resistor R9, one end of the eighth resistor R8 is connected to the output terminal SH _ a of the motor driving device 30, the other end is connected to ground through the ninth resistor R9, a common node of the eighth resistor R8 and the ninth resistor R9 is used as an output terminal of the first voltage detection circuit 304 and is connected to the voltage detection pin VA _ FB of the main control chip 20, and a second capacitor C2 is connected in parallel to both ends of the ninth resistor R9 for filtering.
The motor driving device 30 of the embodiment of the present invention includes the first voltage detection circuit 304, and the voltage at the output end of the motor driving device 30 can be detected by the first voltage detection circuit 304, so that the main control chip 20 can perform overvoltage protection when detecting that the voltage is too high, thereby preventing the motor 50 from being damaged due to the too high voltage.
As shown in fig. 3, the wireless power supply device 40 according to the embodiment of the present invention includes a full-bridge chip 401, a wireless power supply transmitting coil 402, and a second voltage detection circuit 403, wherein an input terminal of the full-bridge chip 401 is connected to the main control chip 20, an output terminal of the full-bridge chip 401 is connected to the wireless power supply transmitting coil 402, an input terminal of the second voltage detection circuit 403 is connected to the full-bridge chip 401, and an output terminal of the second voltage detection circuit 403 is connected to the main control chip 20, as shown in fig. 8, in an example, the model of the full-bridge chip 401 is NU1020QCDB, a voltage input pin VIN of the full-bridge chip 401 is connected to a power source VCC (12V), a wireless power supply control pin SW1 is connected to the wireless power supply transmitting coil 402, one end of the wireless power supply transmitting coil 402 is connected to the power source VCC through a third capacitor C3, and the other end is grounded. The first control signal pin PWM1 and the second control signal pin PWM2 of the full-bridge chip 401 are respectively connected to the high-energy pulse output pin PWM _ WLP _ H and the low-energy pulse output pin PWM _ WLP _ H of the main control chip 20, and the voltage detection pin INSN of the full-bridge chip 401 is connected to the voltage detection pin WLP _ INSN _ R of the main control chip 20.
The operation principle of the wireless power supply device 40 is as follows:
as shown in fig. 8, after the rotary radar is powered on, the power VCC provides a 12V power, the wireless power transmitting coil 402 is powered on, the high-energy pulse output pin PWM _ WLP _ H and the low-energy pulse output pin PWM _ WLP _ H of the main control chip 20 output control signals to the first control signal pin PWM1 and the second control signal pin PWM2 of the full-bridge chip 401, the wireless power control pin SW1 of the full-bridge chip 401 outputs a square wave signal to the wireless power transmitting coil 402, the current in the wireless power transmitting coil 402 changes, the wireless power transmitting coil 402 generates an electromagnetic field, the wireless power receiving coil 60 induces the electromagnetic field to change and then generates a current to supply to the motor 50, meanwhile, voltage detection is performed inside the full-bridge chip 401, a voltage value is output to a voltage detection pin WLP _ INSN _ R of the main control chip 20 through a voltage detection pin INSN, and the main control chip 20 executes loop control of the wireless power supply transmitting coil 402 according to the voltage value.
The wireless power supply device 40 of the embodiment of the utility model controls the wireless power supply transmitting coil 402 by generating the control signal through the full-bridge chip 401, the circuit is simple and reliable, and meanwhile, the full-bridge chip 401 has the voltage detection function and can feed back the output voltage to the main control chip 20 to realize the loop control of the wireless power supply transmitting coil 402.
EXAMPLE III
The embodiment of the utility model provides a rotary radar which comprises a motor, a wireless power supply receiving coil and a radar control circuit provided by the first embodiment or the second embodiment, wherein the output end of a motor driving device in the radar control circuit is connected with the motor, and the wireless power supply receiving coil is used for receiving electric energy transmitted by a wireless power supply device in the radar control circuit.
In the rotary radar of the embodiment of the utility model, the radar control circuit comprises a power supply, a main control chip, a motor driving device and a wireless power supply device, wherein the main control chip is respectively connected with the power supply, the motor driving device and the wireless power supply device, the motor driving device is connected with a motor, the wireless power supply device is used for transmitting electric energy to the wireless power supply receiving coil, and the main control chip is used for controlling the motor driving device to drive the motor to rotate and controlling the wireless power supply device to transmit electric energy.
In the description herein, the terms "first" and "second" are used merely for descriptive purposes and are not intended to have any special meaning.
In the description herein, references to the description of "an embodiment," "an example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single technical solution, and such description is for clarity only, and those skilled in the art should take the description as a whole, and the technical solutions in the embodiments may be appropriately combined to form other embodiments that may be understood by those skilled in the art.
The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the utility model and should not be construed in any way as limiting the scope of the utility model. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive effort, which would fall within the scope of the present invention.
Claims (10)
1. The utility model provides a radar control circuit, its characterized in that is applied to rotatory radar, rotatory radar includes motor and wireless power supply receiving coil, radar control circuit includes power, main control chip, motor drive and wireless power supply unit, main control chip respectively with the power motor drive and wireless power supply unit connects, motor drive with the motor is connected, wireless power supply unit be used for to wireless power supply receiving coil transmitting power, main control chip is used for control the motor drive the motor is rotatory, and is used for control wireless power supply unit transmitting power.
2. The radar control circuit according to claim 1, wherein the motor driving device includes an H-bridge circuit, a driver, and a current detection circuit, an input terminal of the H-bridge circuit is connected to the main control chip through the driver, an output terminal of the H-bridge circuit is connected to the motor, an input terminal of the current detection circuit is connected to an output terminal of the H-bridge circuit, an output terminal of the current detection circuit is connected to the main control chip, and the driver is configured to amplify a control signal output by the main control chip to drive the H-bridge circuit to output a current to drive the motor to rotate.
3. The radar control circuit of claim 2, wherein the H-bridge circuit is a three-phase H-bridge circuit, each phase of the H-bridge circuit includes a first NMOS transistor and a second NMOS transistor, a drain of the first NMOS transistor is connected to a motor power supply, a source of the first NMOS transistor is connected to a drain of the second NMOS transistor, a gate of the first NMOS transistor is connected to the high-energy control pin of the main control chip through a first resistor, an end of the first resistor connected to the high-energy control pin of the main control chip is grounded through a second resistor, a drain of the second NMOS transistor is connected to the source of the first NMOS transistor, a gate of the second NMOS transistor is connected to the low-energy control pin of the main control chip through a third resistor, an end of the third resistor connected to the low-energy control pin of the main control chip is grounded through a fourth resistor, and a source of the second NMOS transistor is grounded through a fifth resistor, and a common node of the first NMOS tube and the second NMOS tube is used as an output end of the H-bridge circuit and is connected with the motor.
4. The radar control circuit of claim 3, wherein the current detection circuit comprises a first output terminal and a second output terminal, the first output terminal is connected to a common node of the fifth resistor and the second NMOS transistor through a sixth resistor, the second output terminal is connected to one end of the fifth resistor, which is grounded, and the first output terminal and the second output terminal are respectively connected to a first current detection pin and a second current detection pin of the main control chip.
5. The radar control circuit of any one of claims 2-4, wherein the motor driving device further comprises a temperature detection circuit, and an output end of the temperature detection circuit is connected to the main control chip.
6. The radar control circuit of any one of claims 1-4, wherein the motor driving device further comprises an optical encoder, an output end of the optical encoder is connected to the main control chip, and the main control chip is configured to control the motor driving device according to an encoded signal output by the optical encoder.
7. The radar control circuit of any one of claims 1-4, wherein the motor driver further comprises a first voltage detection circuit, an input terminal of the first voltage detection circuit is connected to an output terminal of the motor driver, and an output terminal of the first voltage detection circuit is connected to the voltage detection pin of the main control chip.
8. The radar control circuit of any one of claims 1-5, wherein the wireless power supply device comprises a full-bridge chip, a wireless power transmission coil, and a second voltage detection circuit, wherein an input terminal of the full-bridge chip is connected to the main control chip, an output terminal of the full-bridge chip is connected to the wireless power transmission coil, an input terminal of the second voltage detection circuit is connected to the wireless power transmission coil, and an output terminal of the second voltage detection circuit is connected to the main control chip.
9. The radar control circuit of claim 8, wherein the master control chip is PAC5524QF in model number, and the full bridge chip is NU1020QCDB in model number.
10. A rotary radar comprising an electric motor, a wirelessly powered receive coil, and a radar control circuit as claimed in any one of claims 1 to 9, wherein an output of a motor drive in the radar control circuit is connected to the electric motor, and wherein the wirelessly powered receive coil is configured to receive electric energy transmitted by the wirelessly powered device in the radar control circuit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121216299.6U CN215871251U (en) | 2021-06-01 | 2021-06-01 | Radar control circuit and rotary radar |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121216299.6U CN215871251U (en) | 2021-06-01 | 2021-06-01 | Radar control circuit and rotary radar |
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| CN215871251U true CN215871251U (en) | 2022-02-18 |
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