Ultrasonic obstacle detection device

Abstract

The utility model belongs to the technical field of ultrasonic sensors, and particularly relates to an ultrasonic obstacle detection device, which aims to realize more flexible ultrasonic detection with stronger adaptability and stronger adjustability, and comprises a shell, at least one ultrasonic module and an electronic component assembly, the shell comprises a first structure and a second structure, the front end of the first structure is connected with the rear end of the second structure, the top of the first structure is a horizontal plane, the top of the second structure is an inclined plane, and the inclined plane inclines towards the front end of the second structure; the ultrasonic module is rotatably arranged at the junction of the first structure and the second structure, the output end of the ultrasonic module is connected to the electronic component assembly, and the electronic component assembly is arranged in the shell and on the surface of the shell. The utility model has the advantages of reliable test and strong adjustability.

Description

Technical Field

[0001] The utility model belongs to the technical field of ultrasonic sensors, and in particular relates to an ultrasonic obstacle detection device. Background Art

[0002] Ultrasonic sensors are detection devices that detect distances by sending ultrasonic waves to achieve purposes such as obstacle detection.

[0003] Based on the detection method and purpose of the ultrasonic sensor, the setting of its ultrasonic probe is particularly important. In existing sensors, the setting of the ultrasonic probe is relatively fixed, which causes its limitations and lack of flexibility in detection, thereby reducing the adaptability and application range of the ultrasonic sensor in actual use.

[0004] Therefore, it is necessary to improve the ultrasonic sensor so that it can achieve reliable and accurate detection while realizing more flexible, adaptable and adjustable ultrasonic detection. Utility Model Content

[0005] In view of the technical problems existing in the background technology, the utility model provides an ultrasonic obstacle detection device, which can realize more flexible, more adaptable and more adjustable ultrasonic detection.

[0006] In order to achieve the above purpose, the technical solution provided by the utility model is:

[0007] An ultrasonic obstacle detection device comprises a housing, at least one ultrasonic module and an electronic component assembly;

[0008] The housing comprises a first structure and a second structure, the front end of the first structure is connected to the rear end of the second structure, the top of the first structure is a horizontal plane, the top of the second structure is an inclined plane, and the inclined plane is inclined to the front end of the second structure;

[0009] The ultrasonic module is rotatably disposed at the junction of the first structure and the second structure, and the output end of the ultrasonic module is connected to the electronic component assembly, and the electronic component assembly is disposed inside and on the surface of the shell.

[0010] Preferably, the angle between the inclined plane and the horizontal plane is 31 degrees.

[0011] Preferably, four rollers are arranged at the bottom of the housing, two rollers are arranged side by side at the bottom of the first structure, and the other two rollers are arranged side by side at the bottom of the second structure.

[0012] Preferably, there are two ultrasonic modules, which are symmetrical about the longitudinal center axis of the top surface of the housing.

[0013] Preferably, the width of the top surface of the shell is W centimeters, and the distance between the two ultrasonic modules is W / 2 centimeters.

[0014] Preferably, the electronic component assembly comprises a main control module, a key module, a display module, and an alarm module, and the display module, the alarm module, the key module, and the ultrasonic module are respectively connected to the main control module, the display module, and the alarm module.

[0015] Preferably, the ultrasonic module includes an ultrasonic transmitting module and an ultrasonic receiving module.

[0016] Preferably, the ultrasonic transmitting module includes a plurality of resistors, a first transistor, a first capacitor, a first transformer and a first ultrasonic transducer;

[0017] One end of the first resistor is connected to the main control module, the other end of the first resistor is connected to the base of the first transistor, the emitter of the first transistor is connected to the DC source and the anode of the first capacitor, the cathode of the first capacitor is connected to one end of the main coil of the first transformer, one end of the second resistor and one end of the third resistor, the other end of the second resistor is grounded, the other end of the third resistor is connected to the collector of the first transistor and the other end of the main coil of the first transformer, one end of the secondary coil of the first transformer is connected to one end of the fourth resistor and one end of the first ultrasonic transducer, and the other end of the secondary coil of the first transformer is connected to the other end of the fourth resistor and the other end of the first ultrasonic transducer.

[0018] Preferably, the ultrasonic receiving module includes a second ultrasonic transducer, a plurality of resistors and a first operational amplifier;

[0019] One end of the second ultrasonic transducer is connected to one end of the fifth resistor and is grounded, the other end of the second ultrasonic transducer is connected to the other end of the fifth resistor and one end of the sixth resistor, the other end of the sixth resistor is connected to the non-inverting input of the first operational amplifier, the inverting input of the first operational amplifier is connected to one end of the seventh resistor and one end of the eighth resistor, the other end of the seventh resistor is grounded, the other end of the eighth resistor is connected to the output of the first operational amplifier, and the output of the first operational amplifier is connected to the main control module.

[0020] Preferably, the output end of the first operational amplifier is connected to the main control module via a bandpass filter.

[0021] The utility model has the following advantages and beneficial effects:

[0022] The ultrasonic module of the utility model is rotatable, which is convenient for adjusting its detection direction when the position of the device itself is fixed, so as to realize obstacle detection in multiple directions and angles;

[0023] The front end of the shell of the utility model is set as an inclined surface, which further avoids the line of sight obstruction of ultrasonic detection and improves the reliability and accuracy of ultrasonic detection;

[0024] The utility model sets a roller at the bottom of the shell, which ensures that when the distance change detection is performed for a specific obstacle, the relative movement is in a straight line, thereby ensuring the accuracy and reliability of the measurement;

[0025] The circuit configuration of the utility model is simple, easy to implement, cost-effective, and easy to promote and implement;

[0026] The main part of the circuit of the utility model is distributed inside the shell, which plays a protective role to a certain extent and improves the service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic diagram of the structure of the ultrasonic obstacle detection device provided by the utility model;

[0028] Figure 2 A schematic diagram of the electrical principle of the ultrasonic obstacle detection device provided by the utility model;

[0029] Figure 3 A circuit diagram of the ultrasonic transmitting module provided by the utility model;

[0030] Figure 4 A circuit diagram of an ultrasonic receiving module provided by the utility model;

[0031] Icon: 101A-first structure, 101B-second structure, 101-shell, 102-ultrasonic module, 103-roller, R1-first resistor, R2-second resistor, R3-third resistor, R4-fourth resistor, R5-fifth resistor, R6-sixth resistor, R7-seventh resistor, R8-eighth resistor, A1-first operational amplifier, Q1-first transistor, T1-first transformer, U1-first ultrasonic transducer, U2-second ultrasonic transducer. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments.

[0033] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Example 1

[0035] An ultrasonic obstacle detection device, see Figure 1 , comprising a housing 101, at least one ultrasonic module 102 and an electronic component assembly;

[0036] The housing 101 includes a first structure 101A and a second structure 101B, the front end of the first structure 101A is connected to the rear end of the second structure 101B, the top of the first structure 101A is a horizontal plane, and the top of the second structure 101B is an inclined plane, and the inclined plane is inclined toward the front end of the second structure 101B;

[0037] The ultrasonic module 102 is rotatably disposed at the junction of the first structure 101A and the second structure 101B. The output end of the ultrasonic module 102 is connected to the electronic component assembly, and the electronic component assembly is disposed inside and on the surface of the housing 101 .

[0038] In this embodiment, the ultrasonic module 102 and the electronic components can transmit, receive and process ultrasonic signals to detect obstacles. The ultrasonic module 102 mainly has a rotatable transmitting probe part, so that when the ultrasonic obstacle detection device itself is fixed in position, it can detect obstacles and their distances from multiple angles. The ultrasonic module 102 is arranged on the top of the housing 101 for greater stability, and the second structure 101B is arranged as an inclined surface to prevent the edge of the housing 101 from causing a certain degree of obstruction that affects the detection result.

[0039] Example 2

[0040] This embodiment is based on the technical solution of Embodiment 1, and mainly further improves the hardware structure of the ultrasonic obstacle detection device.

[0041] In this embodiment, the angle between the inclined plane and the horizontal plane is 31 degrees.

[0042] As a preferred solution, four rollers 103 are arranged at the bottom of the housing 101, two rollers 103 are arranged side by side at the bottom of the first structure 101A, and the other two rollers 103 are arranged side by side at the bottom of the second structure 101B. The rollers 103 can keep the straight line running without deviating from the preset straight line path when the relative distance between the detection device and the obstacle changes, for example, by moving the ultrasonic obstacle detection device.

[0043] On the other hand, there are two ultrasonic modules 102, which are symmetrical about the longitudinal center axis of the top surface of the housing 101. The two can work together to detect the same obstacle to facilitate comparison and obtain more accurate results during data processing, or they can work together to detect obstacles in different directions.

[0044] Furthermore, the width of the top surface of the housing 101 is W centimeters, and the distance between the two ultrasonic modules 102 is W / 2 centimeters.

[0045] Example 3

[0046] This embodiment is based on the technical solution of Embodiment 1, and mainly further improves the circuit structure of the ultrasonic obstacle detection device.

[0047] As a preferred solution of this embodiment, the electronic component assembly includes a main control module, a button module, a display module, and an alarm module. The display module, the alarm module, the button module and the ultrasonic module 102 are respectively connected to the main control module, the display module, and the alarm module.

[0048] The key module of this embodiment can be used to control the switch of the device by the user, start the test and other operations. The display module can be an LED display screen, etc., which can be set on the surface of the housing 101 for displaying the test results. The alarm module can be an audible and visual alarm, etc., which is used to sound an alarm when the obstacle distance is less than a threshold, and can also be set on the surface of the housing 101. The main control module plays the role of comprehensive control and coordination of various modules and data processing, and can be implemented by a single-chip microcomputer and the like.

[0049] Furthermore, the ultrasonic module 102 includes an ultrasonic transmitting module and an ultrasonic receiving module. The ultrasonic transmitting module is used to transmit ultrasonic signals for detecting obstacles, and the ultrasonic receiving module is used to receive ultrasonic signals reflected by obstacles.

[0050] In this embodiment, the ultrasonic transmitting module includes a plurality of resistors, a first transistor Q1, a first capacitor, a first transformer T1 and a first ultrasonic transducer U1;

[0051] One end of the first resistor R1 is connected to the main control module, the other end of the first resistor R1 is connected to the base of the first transistor Q1, the emitter of the first transistor Q1 is connected to the DC source and the anode of the first capacitor, the cathode of the first capacitor is connected to one end of the main coil of the first transformer T1, one end of the second resistor R2 and one end of the third resistor R3, the other end of the second resistor R2 is grounded, the other end of the third resistor R3 is connected to the collector of the first transistor Q1 and the other end of the main coil of the first transformer T1, one end of the secondary coil of the first transformer T1 is connected to one end of the fourth resistor R4 and one end of the first ultrasonic transducer U1, and the other end of the secondary coil of the first transformer T1 is connected to the other end of the fourth resistor R4 and the other end of the first ultrasonic transducer U1.

[0052] It is particularly noted that the first capacitor is a polar capacitor, and its charging and discharging function as a capacitor can make the voltage more stable at the moment of starting and shutting down the power supply, thereby protecting the circuit.

[0053] When detection is required, the first transistor Q1 amplifies the signal sent by the main control module, and then amplifies it again through the transformer to drive the first ultrasonic transducer U1 to send an ultrasonic signal. The first transistor Q1 can be a PNP transistor.

[0054] Further, the ultrasonic receiving module includes a second ultrasonic transducer U2, a plurality of resistors and a first operational amplifier A1;

[0055] One end of the second ultrasonic transducer U2 is connected to one end of the fifth resistor R5 and is grounded, the other end of the second ultrasonic transducer U2 is connected to the other end of the fifth resistor R5 and one end of the sixth resistor R6, the other end of the sixth resistor R6 is connected to the non-inverting input end of the first operational amplifier A1, the inverting input end of the first operational amplifier A1 is connected to one end of the seventh resistor R7 and one end of the eighth resistor R8, the other end of the seventh resistor R7 is grounded, the other end of the eighth resistor R8 is connected to the output end of the first operational amplifier A1, and the output end of the first operational amplifier A1 is connected to the main control module.

[0056] The first operational amplifier A1 can amplify the signal reflected by the obstacle received by the second ultrasonic transducer U2 and send it to subsequent processing.

[0057] Finally, in order to optimize the detection result, the output end of the first operational amplifier A1 is connected to the main control module through a bandpass filter. The bandpass filter performs filtering processing to improve the signal-to-noise ratio and further enhance the accuracy of the detection.

[0058] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An ultrasonic obstacle detection device, characterized in that : comprising a housing (101), at least one ultrasonic module (102) and an electronic component assembly; The housing (101) comprises a first structure (101A) and a second structure (101B), the front end of the first structure (101A) is connected to the rear end of the second structure (101B), the top of the first structure (101A) is a horizontal plane, the top of the second structure (101B) is an inclined plane, and the inclined plane is inclined toward the front end of the second structure (101B); The ultrasonic module (102) is rotatably arranged at the junction of the first structure (101A) and the second structure (101B), and the output end of the ultrasonic module (102) is connected to the electronic component assembly, and the electronic component assembly is arranged inside and on the surface of the housing (101).

2. The ultrasonic obstacle detection device according to claim 1, characterized in that: The angle between the inclined plane and the horizontal plane is 31 degrees.

3. The ultrasonic obstacle detection device according to claim 1, characterized in that: Four rollers (103) are arranged at the bottom of the housing (101), two rollers (103) are arranged side by side at the bottom of the first structure (101A), and the other two rollers (103) are arranged side by side at the bottom of the second structure (101B).

4. The ultrasonic obstacle detection device according to claim 1, characterized in that: The number of the ultrasonic modules (102) is two, and they are symmetrical about the longitudinal center axis of the top surface of the shell (101).

5. The ultrasonic obstacle detection device according to claim 4, characterized in that: The width of the top surface of the housing (101) is W centimeters, and the distance between the two ultrasonic modules (102) is W / 2 centimeters.

6. The ultrasonic obstacle detection device according to claim 1, characterized in that: The electronic component assembly comprises a main control module, a key module, a display module and an alarm module. The display module, the alarm module, the key module and the ultrasonic module are respectively connected to the main control module, the display module and the alarm module.

7. The ultrasonic obstacle detection device according to claim 6, characterized in that: The ultrasonic module includes an ultrasonic transmitting module and an ultrasonic receiving module.

8. The ultrasonic obstacle detection device according to claim 7, characterized in that: The ultrasonic transmitting module includes a plurality of resistors, a first transistor, a first capacitor, a first transformer and a first ultrasonic transducer; One end of the first resistor is connected to the main control module, the other end of the first resistor is connected to the base of the first transistor, the emitter of the first transistor is connected to the DC source and the anode of the first capacitor, the cathode of the first capacitor is connected to one end of the main coil of the first transformer, one end of the second resistor and one end of the third resistor, the other end of the second resistor is grounded, the other end of the third resistor is connected to the collector of the first transistor and the other end of the main coil of the first transformer, one end of the secondary coil of the first transformer is connected to one end of the fourth resistor and one end of the first ultrasonic transducer, and the other end of the secondary coil of the first transformer is connected to the other end of the fourth resistor and the other end of the first ultrasonic transducer.

9. The ultrasonic obstacle detection device according to claim 8, characterized in that: The ultrasonic receiving module includes a second ultrasonic transducer, a plurality of resistors and a first operational amplifier; One end of the second ultrasonic transducer is connected to one end of the fifth resistor and is grounded, the other end of the second ultrasonic transducer is connected to the other end of the fifth resistor and one end of the sixth resistor, the other end of the sixth resistor is connected to the non-inverting input of the first operational amplifier, the inverting input of the first operational amplifier is connected to one end of the seventh resistor and one end of the eighth resistor, the other end of the seventh resistor is grounded, the other end of the eighth resistor is connected to the output of the first operational amplifier, and the output of the first operational amplifier is connected to the main control module.

10. The ultrasonic obstacle detection device according to claim 9, characterized in that: The output end of the first operational amplifier is connected to the main control module through a bandpass filter.

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