CN212255699U - Radar device for vehicle parking detection - Google Patents
Radar device for vehicle parking detection Download PDFInfo
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- CN212255699U CN212255699U CN202022414184.XU CN202022414184U CN212255699U CN 212255699 U CN212255699 U CN 212255699U CN 202022414184 U CN202022414184 U CN 202022414184U CN 212255699 U CN212255699 U CN 212255699U
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Abstract
The utility model provides a radar device for vehicle parking detection, which comprises a power module, a signal transmitting and receiving module, a data processing module, a communication module and an interface circuit module, wherein the power module is used for providing power for the radar device; the signal transmitting and receiving module transmits or receives signals in a radio wave mode and transmits the received signals to the data processing module; the data processing module is used for receiving the signals output by the signal transmitting and receiving module and amplifying the received signals; the communication module is used for transmitting the signal output by the data processing module; the interface circuit module is used for transmitting the signal output by the communication module to the processor. The radar device can be used for solving the problem that missing detection or false detection occurs in the existing parking detection, accurately gives parking space information, and effectively improves the accuracy of parking space judgment.
Description
Technical Field
The utility model relates to a radar detects technical field, especially relates to a low-power consumption is used for radar installations that vehicle parking detected.
Background
With the development of electronic technology and communication technology, more and more traditional facilities enter an intelligent development track. The monitoring device and system of the parking lot also bring intelligent development. The parking lot parking monitoring device and system in the prior art usually adopt sensors such as geomagnetic sensors or ultrasonic radars to perform vehicle induction detection to induce parking of vehicles, but the parking detection based on geomagnetism usually encounters the situation that the magnetic field is too small or too large, so that the problem of missed detection or false detection easily occurs in the parking detection based on geomagnetism.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a radar installation for vehicle parking detects, this radar installation can be arranged in solving the problem that appears lou examining or the false retrieval among the current parking detects, and the parking stall information is accurately given, has effectively improved the rate of accuracy of parking judgement to the parking stall.
In order to achieve the above object, the technical solution of the present invention is specifically realized as follows:
the utility model discloses a radar device for vehicle parking detection, which comprises a power module, a signal transmitting and receiving module, a data processing module, a communication module and an interface circuit module, wherein the power module is used for providing power for the radar device; the signal transmitting and receiving module transmits or receives signals in a radio wave mode and transmits the received signals to the data processing module; the data processing module is used for receiving the signals sent by the signal transmitting and receiving module and amplifying the received signals; the communication module is used for receiving the signal output by the data processing module and outputting the signal; the interface circuit module is used for transmitting the signal output by the communication module to the processor.
Furthermore, a first pin IN of a controllable linear regulator chip U3 IN the power supply module is connected to the VCC terminal through a magnetic bead B1, while the first pin IN of the controllable linear regulator chip U3 is grounded through a capacitor C19, a first terminal of a magnetic bead B1 is connected to a first terminal of a capacitor C19, a second terminal of a magnetic bead B1 is connected to a first terminal of a capacitor C18, and a second terminal of the capacitor C18 is grounded; the second pin GND of the controllable linear voltage regulator chip U3 is grounded; a third pin EN of the controllable linear voltage regulator chip U3 is connected with a resistor R22; the fourth pin GND of the controllable linear voltage regulator chip U3 is grounded through a resistor R23; the fifth pin of the controllable linear voltage regulator chip U3 is connected with +3.3V voltage, meanwhile, the fifth pin of the controllable linear voltage regulator chip U3 is grounded through a capacitor C20, the first end of a capacitor C21 is connected with +3.3V voltage, and the second end of the capacitor C21 is grounded.
Further, in the signal transmitting and receiving module, six capacitors are connected in parallel between the collector of the transistor Q1 and the ground, and meanwhile, the collector of the transistor Q1 is connected with +3.3V voltage; an emitter of the triode Q1 is connected with a resistor R4, a capacitor C10, a capacitor C11 and a resistor R6 are connected between a first end of the resistor R4 and the ground in parallel, and a capacitor C9, a resistor R5 and a capacitor C8 are connected between a second end of the resistor R4 and the ground in parallel; the base of the triode Q1 is connected with the collector of the triode Q1 through resistors R2 and R1, the base of the triode Q1 is grounded through a resistor R3, and the base of the triode Q1 is grounded through a resistor R2 and a capacitor C7.
Further, in the data processing module, a third pin of a non-inverting input terminal of a first operational amplifier chip U1A is connected to an output terminal of the signal transmitting and receiving module, a third pin of a non-inverting input terminal of the first operational amplifier chip U1A is connected to a second pin of an inverting input terminal of the first operational amplifier chip U1A through a diode D2, the second pin of the inverting input terminal of the first operational amplifier chip U1A is grounded through a resistor R8 and a capacitor CT1, meanwhile, the second pin of the inverting input terminal of the first operational amplifier chip U1A is connected to an OUTA output terminal of a first pin of the first operational amplifier chip U1A through a resistor RD1, and the second pin of the inverting input terminal of the first operational amplifier chip U1A is connected to an OUTA output terminal of the first pin of the first operational amplifier chip U1A through a capacitor C12; the first pin OUTA end of the first operational amplifier chip U1A is connected to the second pin of the inverting input end of the second operational amplifier chip U2A through a capacitor C14 and a resistor R9, the second pin of the inverting input end of the second operational amplifier chip U2A is connected to the first pin OUTA output end of the second operational amplifier chip U2A through a resistor R7, meanwhile, the second pin of the inverting input end of the second operational amplifier chip U2A is connected to the first pin OUTA output end of the second operational amplifier chip U2A through a capacitor C13, the non-inverting input end of the third pin of the second operational amplifier chip U2A is connected to the VCC end through a resistor R10, and meanwhile, the non-inverting input end of the third pin of the second operational amplifier chip U2A is grounded through a resistor R11 and a capacitor C15 which are connected in parallel; the first pin OUTA output end of the second operational amplifier chip U2A is connected to the sixth pin of the inverting input end of a third operational amplifier chip U1B through a resistor R15, meanwhile, the sixth pin of the inverting input end of the third operational amplifier chip U1B is connected to the seventh pin OUTB output end of the third operational amplifier chip U1B through a resistor R16, the fifth pin of the non-inverting input end of the third operational amplifier chip U1B is connected to the VCC end through a resistor R13 and a resistor R12, and meanwhile, the fifth pin of the non-inverting input end of the third operational amplifier chip U1B is grounded through a resistor R13 and a capacitor C16 and a resistor R14 which are connected in parallel; the first pin OUTA output end of the second operational amplifier chip U2A is connected with the tenth pin of the non-inverting input end of the fourth operational amplifier chip U1C through a resistor R21, the ninth pin of the inverting input end of the fourth operational amplifier chip U1C is connected with the eighth pin OUTC output end of the fourth operational amplifier chip U1C through a resistor R17, meanwhile, the ninth pin of the inverting input end of the fourth operational amplifier chip U1C is connected with the VCC end through a resistor R19 and a resistor R18, and the ninth pin of the inverting input end of the fourth operational amplifier chip U1C is grounded through a resistor R19 and a parallel capacitor 17 and a resistor R20.
Further, the first pin A of the communication chip U4 in the communication module is connected with the seventh pin OUTB output end of the third operational amplifier chip U1B; the second pin B of the communication chip U4 is connected with the eighth pin OUTC output end of the fourth operational amplifier chip U1C; the third pin GND of the communication chip U4 is grounded; a fourth pin Y of the communication chip U4 is connected with a data output end; the fifth pin of the communication chip U4 is connected to a VCC terminal, and the fifth pin of the communication chip U4 is grounded via a capacitor C22.
Further, in the interface circuit module, a first pin of the interface circuit chip CON1 is grounded, and a first pin of the interface circuit chip CON1 is connected to a fifth pin of the interface circuit chip CON1 through a diode Z1; a second pin of the interface circuit chip CON1 is connected to a third pin EN of a controllable linear regulator chip U3 in the power supply module through a resistor R22; the third pin of the interface circuit chip CON1 is connected to the fourth pin Y of the communication chip U4 in the communication module; the fourth pin of the interface circuit chip CON1 is connected to the first pin OUTA output terminal of the second operational amplifier chip U2A in the data processing module; and a fifth pin of the interface circuit chip CON1 is connected to the VCC terminal.
The beneficial technical effects are as follows:
1. the utility model discloses a radar device for vehicle parking detection, which comprises a power module, a signal transmitting and receiving module, a data processing module, a communication module and an interface circuit module, wherein the power module is used for providing power for the radar device; the signal transmitting and receiving module transmits or receives an external signal in a radio wave mode and transmits the received external signal to the data processing module; the data processing module is used for receiving the signals sent by the signal transmitting and receiving module and amplifying the received signals; the communication module is used for receiving the signal output by the data processing module and outputting the signal; the interface circuit module is used for transmitting the signal output by the communication module to the processor, and the radar device can be used for solving the problem of missing detection or false detection in the existing parking detection, accurately giving parking space information and effectively improving the accuracy of parking space judgment;
2. the utility model discloses in, power module includes controllable linear voltage regulator chip, accessible control the third pin EN of controllable linear voltage regulator chip adjusts the supply voltage who is used for the radar installations that the vehicle parkked the detection, reduces the whole consumption of radar installations that is used for the vehicle to park the detection.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description of the embodiments will be briefly described below.
Fig. 1 is a schematic structural diagram of a radar apparatus for vehicle parking detection according to the present invention;
fig. 2 is a schematic structural diagram of a radar apparatus for vehicle parking detection according to the present invention;
fig. 3 is a circuit diagram of a power module in a radar apparatus for vehicle parking detection according to the present invention;
fig. 4 is a circuit structure diagram of a signal transmitting and receiving module in a radar apparatus for vehicle parking detection according to the present invention;
fig. 5 is a circuit diagram of a first part of a data processing module in a radar apparatus for vehicle parking detection according to the present invention;
fig. 6 is a circuit diagram of a second part of a data processing module of a radar apparatus for vehicle parking detection according to the present invention;
fig. 7 is a circuit structure diagram of a communication module in a radar apparatus for vehicle parking detection according to the present invention;
fig. 8 is a circuit structure diagram of an interface circuit module in a radar apparatus for vehicle parking detection according to the present invention.
The system comprises a power supply module 1, a signal transmitting and receiving module 2, a data processing module 3, a communication module 4 and an interface circuit module 5.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
The utility model discloses a radar device for vehicle parking detection, see fig. 1-8, the radar device for vehicle parking detection includes power module, signal transmission and receiving module, data processing module, communication module and interface circuit module, wherein, power module is used for providing power for the radar device; the signal transmitting and receiving module transmits or receives signals in a radio wave mode and transmits the received signals to the data processing module; the data processing module is used for receiving the signals output by the signal transmitting and receiving module and amplifying the received signals; the communication module is used for receiving the signal output by the data processing module and outputting the signal; interface circuit module is used for sending the signal of communication module output to the treater, the utility model discloses a radar installation for vehicle parking detects, this radar installation can be arranged in solving the problem that appears lou examining or the false retrieval among the current parking detects, can accurately give parking stall information, has effectively improved the rate of accuracy of parking stall parking judgement.
As an embodiment of the present invention, IN the power supply module, referring to fig. 3, specifically, the first pin IN of the controllable linear regulator chip U3 is connected to the VCC terminal through the magnetic bead B1, while the first pin IN of the controllable linear regulator chip U3 is grounded through the capacitor C19, the first terminal of the magnetic bead B1 is connected to the first terminal of the capacitor C19, the second terminal of the magnetic bead B1 is connected to the first terminal of the capacitor C18, and the second terminal of the capacitor C18 is grounded; the second pin GND of the controllable linear voltage regulator chip U3 is grounded; a third pin EN of the controllable linear voltage regulator chip U3 is connected with a resistor R22; the fourth pin GND of the controllable linear voltage regulator chip U3 is grounded through a resistor R23; the voltage of +3.3V is connected to the fifth pin of controllable linear voltage regulator chip U3, and controllable linear voltage regulator chip U3's fifth pin is through electric capacity C20 ground connection simultaneously, and the voltage of +3.3V is connected to the first end of electric capacity C21, and the second end ground connection of electric capacity C21 for provide stable mains voltage for the radar installations that vehicle parking detected, accessible control the third pin EN of controllable linear voltage regulator chip adjusts the mains voltage of the radar installations that vehicle parking detected, reduces the radar installations's whole consumption that is used for vehicle parking to detect, and preferably, controllable linear voltage regulator chip U3 is TPS78233 DDCR.
As an embodiment of the present invention, in the signal transmitting and receiving module, referring to fig. 4, specifically, six capacitors are connected in parallel between the collector of the transistor Q1 and the ground: c1, C2, C3, C4, C5 and C6, and the collector of the triode Q1 is connected with +3.3V voltage; an emitter of the triode Q1 is connected with a resistor R4, a capacitor C10, a capacitor C11 and a resistor R6 are connected in parallel between a first end of the resistor R4 and the ground, and a capacitor C9, a resistor R5 and a capacitor C8 are connected in parallel between a second end of the resistor R4 and the ground; the base of the triode Q1 is connected with the collector of the triode Q1 through the resistors R2 and R1, the base of the triode Q1 is grounded through the resistor R3, the base of the triode Q1 is grounded through the resistor R2 and the capacitor C7, high-frequency signals generated by the circuit are transmitted to the air through the on-board antenna, when the high-frequency signals transmitted to the air meet moving objects, reflected signals are received through the loop antenna, and the received signals are transmitted to the data processing module.
As an embodiment of the present invention, in the data processing module, referring to fig. 5 and fig. 6, specifically, the third pin of the non-inverting input terminal of the first operational amplifier chip U1A is connected to the output terminal of the signal transmitting and receiving module, the third pin of the non-inverting input terminal of the first amplifier chip U1A is connected to the second pin of the inverting input terminal of the first operational amplifier chip U1A through a diode D2, the second pin of the inverting input terminal of the first operational amplifier chip U1A is grounded through a resistor R8 and a capacitor CT1, meanwhile, the second pin of the inverting input terminal of the first operational amplifier chip U1A is connected to the first pin OUTA output terminal of the first operational amplifier chip U1A through a resistor RD1, and the second pin of the inverting input terminal of the first operational amplifier chip U1A is connected to the first pin OUTA output terminal of the first operational amplifier chip U1A through a capacitor C12; the first pin OUTA end of the first operational amplifier chip U1A is connected to the second pin of the inverting input end of the second operational amplifier chip U2A through a capacitor C14 and a resistor R9, the second pin of the inverting input end of the second operational amplifier chip U2A is connected to the first pin OUTA output end of the second operational amplifier chip U2A through a resistor R7, meanwhile, the second pin of the inverting input end of the second operational amplifier chip U2A is connected to the first pin OUTA output end of the second operational amplifier chip U2A through a capacitor C13, the non-inverting input end of the third pin of the second operational amplifier chip U2A is connected to the VCC end through a resistor R10, and meanwhile, the non-inverting input end of the third pin of the second operational amplifier chip U2A is grounded through a resistor R11 and a capacitor C15 which are connected in parallel; the first pin OUTA output end of the second operational amplifier chip U2A is connected with the sixth pin of the inverting input end of the third operational amplifier chip U1B through a resistor R15, meanwhile, the sixth pin of the inverting input end of the third operational amplifier chip U1B is connected with the seventh pin OUTB output end of the third operational amplifier chip U1B through a resistor R16, the fifth pin of the non-inverting input end of the third operational amplifier chip U1B is connected with the VCC end through a resistor R13 and a resistor R12, and meanwhile, the fifth pin of the non-inverting input end of the third operational amplifier chip U1B is grounded through a resistor R13 and a capacitor C16 and a resistor R14 which are connected in parallel; the output end of the first pin OUTA of the second operational amplifier chip U2A is connected to the tenth pin of the non-inverting input end of the fourth operational amplifier chip U1C through a resistor R21, the ninth pin of the inverting input end of the fourth operational amplifier chip U1C is connected to the eighth pin OUTC output end of the fourth operational amplifier chip U1C through a resistor R17, meanwhile, the ninth pin of the inverting input end of the fourth operational amplifier chip U1C is connected to the VCC end through a resistor R19 and a resistor R18, the ninth pin of the inverting input end of the fourth operational amplifier chip U1C is grounded through a resistor R19 and a capacitor C17 and a resistor R20 connected in parallel, preferably, the operational amplifier chip is TP1512, and the data processing module outputs two signals OUTA and OUTB b through a four-stage (multi-stage) operational amplifier from the transmitting and receiving module and transmits the two output signals to the communication module.
As an embodiment of the present invention, in the communication module, referring to fig. 7, specifically, the first pin a of the communication chip U4 is connected to the seventh pin OUTB output terminal of the third operational amplifier chip U1B; the second pin B of the communication chip U4 is connected with the eighth pin OUTC output terminal of the fourth operational amplifier chip U1C; the third pin GND of the communication chip U4 is grounded; a fourth pin Y of the communication chip U4 is connected with a data output end; the VCC end is connected to the fifth pin of communication chip U4, and the fifth pin of communication chip U4 simultaneously is through electric capacity C22 ground connection, and two way signals of data processing module output are received to the communication module, are effective signal through data comparison with signal processing to convey to the mainboard through interface circuit.
As an embodiment of the present invention, in the interface circuit module, referring to fig. 8, specifically, the first pin of the interface circuit chip CON1 is grounded, and the first pin of the interface circuit chip CON1 is connected to the fifth pin of the interface circuit chip CON1 via the diode Z1; a second pin of the interface circuit chip CON1 is connected to a third pin EN of the controllable linear regulator chip U3 in the power supply module through a resistor R22; the third pin of the interface circuit chip CON1 is connected to the fourth pin Y of the communication chip U4 in the communication module; the fourth pin of the interface circuit chip CON1 is connected to the first pin OUTA output terminal of the second operational amplifier chip U2A in the data processing module; the fifth pin of the interface circuit chip CON1 is connected to the VCC terminal, and the interface circuit module converts the effective signal output by the communication module into a radar monitoring result and transmits the radar monitoring result to the rear-end peripheral circuit for parking detection and judgment.
The utility model discloses a radar installations's theory of operation for vehicle parking detects does:
the power module provides stable working power supply for the radar device, signal transmission and receiving module produce high frequency signal, high frequency signal passes through board-mounted antenna transmission to aloft, when the high frequency signal of transmission to aloft meets moving object, then receive the reflection signal through returning type antenna, and convey received signal to data processing module, data processing module carries out amplification processing with received signal, export two way signals, communication module receives two way signals of data processing module output, convert signal into effectual signal through the data contrast, and convey the treater to through interface circuit module.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., 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 invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above embodiments are only intended to describe the preferred embodiments of the present invention, but not to limit the scope of the present invention, and various modifications and improvements made by the technical solutions of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.
Claims (6)
1. A radar apparatus for vehicle parking detection, comprising:
the power supply module is used for providing power supply for the radar device;
the signal transmitting and receiving module transmits or receives signals in a radio wave mode and transmits the received signals to the data processing module;
the data processing module is used for receiving the signals sent by the signal transmitting and receiving module and amplifying the received signals;
the communication module is used for receiving the signal output by the data processing module;
and the interface circuit module is used for transmitting the signal output by the communication module to the processor.
2. The radar apparatus for vehicle parking detection as claimed IN claim 1, wherein a first pin IN of a controllable linear regulator chip U3 IN the power supply module is connected to a VCC terminal via a bead B1, while a first pin IN of the controllable linear regulator chip U3 is connected to ground via a capacitor C19, a first terminal of a bead B1 is connected to a first terminal of a capacitor C19, a second terminal of a bead B1 is connected to a first terminal of a capacitor C18, and a second terminal of the capacitor C18 is connected to ground; the second pin GND of the controllable linear voltage regulator chip U3 is grounded; a third pin EN of the controllable linear voltage regulator chip U3 is connected with a resistor R22; the fourth pin GND of the controllable linear voltage regulator chip U3 is grounded through a resistor R23; the fifth pin of the controllable linear voltage regulator chip U3 is connected with +3.3V voltage, meanwhile, the fifth pin of the controllable linear voltage regulator chip U3 is grounded through a capacitor C20, the first end of a capacitor C21 is connected with +3.3V voltage, and the second end of the capacitor C21 is grounded.
3. The radar apparatus for vehicle parking detection as recited in claim 1, wherein in the signal transmitting and receiving module, six capacitors are connected in parallel between a collector of a transistor Q1 and ground, while a collector of the transistor Q1 is connected to + 3.3V; an emitter of the triode Q1 is connected with a resistor R4, a capacitor C10, a capacitor C11 and a resistor R6 are connected between a first end of the resistor R4 and the ground in parallel, and a capacitor C9, a resistor R5 and a capacitor C8 are connected between a second end of the resistor R4 and the ground in parallel; the base of the triode Q1 is connected with the collector of the triode Q1 through resistors R2 and R1, the base of the triode Q1 is grounded through a resistor R3, and the base of the triode Q1 is grounded through a resistor R2 and a capacitor C7.
4. The radar apparatus for vehicle parking detection according to claim 1, in the data processing module, the third pin of the non-inverting input end of the first operational amplifier chip U1A is connected with the output end of the signal transmitting and receiving module, the third pin of the non-inverting input terminal of the first amplifier chip U1A is connected to the second pin of the inverting input terminal of the first operational amplifier chip U1A through a diode D2, the second pin of the inverting input terminal of the first operational amplifier chip U1A is grounded through a resistor R8 and a capacitor CT1, meanwhile, the second pin of the inverting input terminal of the first operational amplifier chip U1A is connected to the first pin OUTA output terminal of the first operational amplifier chip U1A through a resistor RD1, the second pin of the inverting input end of the first operational amplifier chip U1A is connected with the OUTA output end of the first pin of the first operational amplifier chip U1A through a capacitor C12; the first pin OUTA end of the first operational amplifier chip U1A is connected to the second pin of the inverting input end of the second operational amplifier chip U2A through a capacitor C14 and a resistor R9, the second pin of the inverting input end of the second operational amplifier chip U2A is connected to the first pin OUTA output end of the second operational amplifier chip U2A through a resistor R7, meanwhile, the second pin of the inverting input end of the second operational amplifier chip U2A is connected to the first pin OUTA output end of the second operational amplifier chip U2A through a capacitor C13, the non-inverting input end of the third pin of the second operational amplifier chip U2A is connected to the VCC end through a resistor R10, and meanwhile, the non-inverting input end of the third pin of the second operational amplifier chip U2A is grounded through a resistor R11 and a capacitor C15 which are connected in parallel; the first pin OUTA output end of the second operational amplifier chip U2A is connected to the sixth pin of the inverting input end of a third operational amplifier chip U1B through a resistor R15, meanwhile, the sixth pin of the inverting input end of the third operational amplifier chip U1B is connected to the seventh pin OUTB output end of the third operational amplifier chip U1B through a resistor R16, the fifth pin of the non-inverting input end of the third operational amplifier chip U1B is connected to the VCC end through a resistor R13 and a resistor R12, and meanwhile, the fifth pin of the non-inverting input end of the third operational amplifier chip U1B is grounded through a resistor R13 and a capacitor C16 and a resistor R14 which are connected in parallel; the first pin OUTA output end of the second operational amplifier chip U2A is connected with the tenth pin of the non-inverting input end of the fourth operational amplifier chip U1C through a resistor R21, the ninth pin of the inverting input end of the fourth operational amplifier chip U1C is connected with the eighth pin OUTC output end of the fourth operational amplifier chip U1C through a resistor R17, meanwhile, the ninth pin of the inverting input end of the fourth operational amplifier chip U1C is connected with the VCC end through a resistor R19 and a resistor R18, and the ninth pin of the inverting input end of the fourth operational amplifier chip U1C is grounded through a resistor R19 and a parallel capacitor 17 and a resistor R20.
5. The radar apparatus for vehicle parking detection as claimed in claim 1, wherein in the communication module, the first pin a of the communication chip U4 is connected to the seventh pin OUTB output terminal of the third operational amplifier chip U1B; the second pin B of the communication chip U4 is connected with the eighth pin OUTC output end of the fourth operational amplifier chip U1C; the third pin GND of the communication chip U4 is grounded; a fourth pin Y of the communication chip U4 is connected with a data output end; the fifth pin of the communication chip U4 is connected to a VCC terminal, and the fifth pin of the communication chip U4 is grounded via a capacitor C22.
6. The radar apparatus for vehicle parking detection according to claim 1, wherein in the interface circuit module, a first pin of an interface circuit chip CON1 is grounded, and a first pin of the interface circuit chip CON1 is connected to a fifth pin of the interface circuit chip CON1 via a diode Z1; a second pin of the interface circuit chip CON1 is connected to a third pin EN of a controllable linear regulator chip U3 in the power supply module through a resistor R22; the third pin of the interface circuit chip CON1 is connected to the fourth pin Y of the communication chip U4 in the communication module; the fourth pin of the interface circuit chip CON1 is connected to the first pin OUTA output terminal of the second operational amplifier chip U2A in the data processing module; and a fifth pin of the interface circuit chip CON1 is connected to the VCC terminal.
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| CN202022414184.XU CN212255699U (en) | 2020-10-27 | 2020-10-27 | Radar device for vehicle parking detection |
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| CN202022414184.XU CN212255699U (en) | 2020-10-27 | 2020-10-27 | Radar device for vehicle parking detection |
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