Single and double sheet detection sensor based on ultrasonic waves

Abstract

The utility model relates to the technical field of photoelectric sensors, in particular to a single-double sheet detection sensor based on ultrasonic waves, which comprises a transmitting end and a receiving end which are respectively mounted on two sides of a transmission path of a detected object. The transmitting end comprises an ultrasonic transmitting probe, and the receiving end comprises an ultrasonic receiving probe; the transmitting end comprises a microcontroller, an ultrasonic transmitting circuit and a single-double learning circuit, the ultrasonic transmitting circuit and the single-double learning circuit are respectively connected with the microcontroller, and the ultrasonic transmitting probe is connected with the ultrasonic transmitting circuit; the receiving end comprises an ultrasonic receiving circuit and an intensity indicator, the intensity indicator is connected with the ultrasonic receiving circuit, the ultrasonic receiving probe is connected with the ultrasonic receiving circuit, and the ultrasonic receiving circuit is connected with the microcontroller through a signal synchronization line. Compared with the prior art, the single-sheet and double-sheet detection sensor based on the ultrasonic waves is suitable for detecting different sheet numbers of articles made of different materials, and the universality is improved.

Description

[Technical Field]

[0001] This utility model relates to the field of photoelectric sensor technology, and in particular to a single / double sheet detection sensor based on ultrasound. [Background Technology]

[0002] Existing ultrasonic detection sensors can typically only detect single or double items, and different sensors are required for items made of different materials, making them inconvenient to use and lacking versatility. [Utility Model Content]

[0003] To overcome the above problems, this utility model proposes an ultrasonic-based single / double sheet detection sensor that can effectively solve the above problems.

[0004] The present invention provides a technical solution to the above-mentioned technical problems by providing an ultrasonic-based single / double sheet detection sensor, comprising a transmitter and a receiver, the transmitter and receiver being positioned correspondingly and respectively installed on both sides of the transmission path of the object being measured; the transmitter includes an ultrasonic transmitting probe, and the receiver includes an ultrasonic receiving probe, the positions of the ultrasonic transmitting probe and the ultrasonic receiving probe being corresponding; the transmitter includes a microcontroller, an ultrasonic transmitting circuit, and a single / double sheet learning circuit, the ultrasonic transmitting circuit and the single / double sheet learning circuit being respectively connected to the microcontroller, and the ultrasonic transmitting probe being connected to the ultrasonic transmitting circuit; the receiver includes an ultrasonic receiving circuit and an intensity indicator, the intensity indicator being connected to the ultrasonic receiving circuit, the ultrasonic receiving probe being connected to the ultrasonic receiving circuit, and the ultrasonic receiving circuit being connected to the microcontroller via a signal synchronization line.

[0005] Preferably, the single / double sheet learning circuit is used to learn and store the acoustic energy characteristics of single / double sheet detection objects of different detection materials.

[0006] Preferably, the ultrasonic receiving probe includes a signal receiver for converting received ultrasonic pulses into electrical signals.

[0007] Preferably, the receiving end includes an ultrasonic receiving circuit and an intensity indicator, the intensity indicator is connected to the ultrasonic receiving circuit, the ultrasonic receiving probe is connected to the ultrasonic receiving circuit, and the ultrasonic receiving circuit is connected to a microcontroller via a signal synchronization line.

[0008] Preferably, the intensity indicator is connected to an intensity indicator light, and the brightness of the intensity indicator light is used to represent the magnitude of the sound wave energy.

[0009] Preferably, the transmitting end further includes a signal output circuit, which is connected to the microcontroller and is used to output the detection result.

[0010] Preferably, the ultrasonic-based single / double sheet detection sensor includes a power supply circuit, and the transmitting end and the receiving end are respectively connected to the power supply circuit.

[0011] Preferably, the transmitter includes a transmitter housing, and the receiver includes a receiver housing, both of which are made of copper plated with nickel.

[0012] Preferably, the microcontroller, ultrasonic transmitting circuit, single / double sheet learning circuit, and signal output circuit are all located inside the transmitter housing, and the ultrasonic transmitting probe extends out from the transmitter housing.

[0013] Preferably, the ultrasonic receiving circuit and the intensity indicator are both located inside the receiving end housing, and the ultrasonic receiving probe extends out from the receiving end housing.

[0014] Compared with existing technologies, the ultrasonic-based single / double sheet detection sensor of this invention, through the device microcontroller and single / double sheet learning circuit, realizes the function of learning the acoustic energy of single / double sheet detection objects of different detection materials, and can be applied to the detection of different numbers of sheets of different materials, thus improving versatility; the brightness of a specific indicator light is used to indicate the magnitude of the acoustic energy, thus improving the ease of use of the product. [Attached Image Description]

[0015] Figure 1 This is an overall framework diagram of the ultrasonic-based single / double sheet detection sensor of this utility model;

[0016] Figure 2 This is a schematic diagram of the microcontroller circuit for the ultrasonic-based single / double sheet detection sensor of this utility model.

Detailed Implementation Methods

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of this utility model.

[0018] It should be noted that in this embodiment of the invention, all directional indications (such as up, down, left, right, front, back, etc.) are limited to relative positions on the specified view, rather than absolute positions.

[0019] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0020] Please see Figure 1 and Figure 2 The present invention relates to an ultrasonic-based single / double sheet detection sensor, which includes a transmitter and a receiver. The transmitter and receiver are positioned correspondingly and are respectively installed on both sides of the transmission path of the object being measured.

[0021] During operation, the transmitter emits ultrasonic signals, which travel through the transmission path. If there are no objects or only a single object in the path, most of the sound waves will reach the receiver. However, if two or more objects overlap, more sound waves will be reflected or absorbed, resulting in a significant reduction in the sound energy received by the receiver. The sensor identifies the presence of one or more objects by comparing the received sound energy.

[0022] The transmitting end includes an ultrasonic transmitting probe, and the receiving end includes an ultrasonic receiving probe, with the transmitting and receiving probes positioned corresponding to each other. The ultrasonic receiving probe includes a signal receiver for converting received ultrasonic pulses into electrical signals.

[0023] The transmitting end includes a microcontroller, an ultrasonic transmitting circuit, and a single / double sheet learning circuit. The ultrasonic transmitting circuit and the single / double sheet learning circuit are respectively connected to the microcontroller, and the ultrasonic transmitting probe is connected to the ultrasonic transmitting circuit. The single / double sheet learning circuit is used to learn the acoustic energy characteristics of single / double sheet detection objects of different detection materials and to store the different acoustic energy characteristics.

[0024] The receiving end includes an ultrasonic receiving circuit and an intensity indicator. The intensity indicator is connected to the ultrasonic receiving circuit, and the ultrasonic receiving probe is connected to the ultrasonic receiving circuit. The ultrasonic receiving circuit is connected to a microcontroller via a signal synchronization line.

[0025] The intensity indicator is connected to an intensity indicator light, and the brightness of the intensity indicator light is used to represent the magnitude of the sound wave energy.

[0026] The transmitter also includes a signal output circuit, which is connected to the microcontroller and is used to output the detection results.

[0027] The present invention relates to an ultrasonic-based single / double sheet detection sensor, which includes a power supply circuit, wherein the transmitting end and the receiving end are respectively connected to the power supply circuit.

[0028] The transmitter includes a transmitter housing, and the receiver includes a receiver housing. Both the transmitter housing and the receiver housing are made of copper-plated nickel.

[0029] The microcontroller, ultrasonic transmitting circuit, single / double sheet learning circuit, and signal output circuit are all located inside the transmitter housing, while the ultrasonic transmitting probe extends out from the transmitter housing.

[0030] The ultrasonic receiving circuit and intensity indicator are both located inside the receiver housing, while the ultrasonic receiving probe extends out from the receiver housing.

[0031] During testing, the microcontroller controls the ultrasonic transmitting circuit to output a transmission signal to the ultrasonic transmitting probe at a fixed frequency. The ultrasonic transmitting probe is excited by the transmission signal and emits ultrasonic pulses forward through the transmission path. The ultrasonic pulses travel through the transmission path to the ultrasonic receiving probe. The ultrasonic receiving probe collects the ultrasonic pulses and converts them into electrical signals through a signal receiver. The intensity indicator shows the strength of the received signal by the brightness of the intensity indicator light. The signal is then transmitted back to the microcontroller through the signal synchronization line.

[0032] The microcontroller calculates the detection result by matching the energy characteristics of the sound wave, and outputs the detection result as a signal through the signal output circuit.

[0033] Furthermore, the microcontroller can dynamically set the acoustic energy characteristics of single and double sheets of different detection materials by detecting the learning signal of the single / double sheet learning circuit. The single / double sheet learning circuit stores the acoustic energy characteristics of single or double sheets of different detection materials for the microcontroller to call and match.

[0034] The microcontroller used is the HC32F448FCUI chip from XHSC Semiconductor Co., Ltd.

[0035] The HC32F448 series chip is a chip based on... The core is a 32-bit high-performance microcontroller with a maximum operating frequency of 200MHz. It features built-in high-speed memory (up to 256KB of flash memory and 68KB of SRAM), and its pins reuse a large number of enhanced peripherals and I / Os. The microcontroller is responsible for functions such as generating transmit signals, sampling receive signals, setting sound wave energy, calculating detection results, and controlling the operating frequency.

[0036] Both the ultrasonic transmitting probe and the ultrasonic receiving probe are cylindrical, with a diameter of 15 mm and a height of 10 mm. The ultrasonic transmitting probe can be excited by a 200 kHz square wave signal to emit ultrasonic pulses forward, and the ultrasonic receiving probe can convert the received ultrasonic pulses into electrical signals for subsequent circuit processing.

[0037] The ultrasonic-based single / double sheet detection sensor of this invention has three signal outputs: no detection object signal output, single sheet detection object signal output, and double sheet detection object signal output.

[0038] Compared with existing technologies, the ultrasonic-based single / double sheet detection sensor of this invention, through the device microcontroller and single / double sheet learning circuit, realizes the function of learning the acoustic energy of single / double sheet detection objects of different detection materials, and can be applied to the detection of different numbers of sheets of different materials, thus improving versatility; the brightness of a specific indicator light is used to indicate the magnitude of the acoustic energy, thus improving the ease of use of the product.

[0039] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any modifications, equivalent substitutions and improvements made within the concept of the present utility model should be included within the patent protection scope of the present utility model.

Claims

1. An ultrasonic-based single / double sheet detection sensor, characterized in that, It includes a transmitter and a receiver, which are positioned correspondingly and are respectively installed on both sides of the transmission path of the object being measured. The transmitting end includes an ultrasonic transmitting probe, and the receiving end includes an ultrasonic receiving probe, with the ultrasonic transmitting probe and the ultrasonic receiving probe being positioned correspondingly. The transmitting end includes a microcontroller, an ultrasonic transmitting circuit, and a single / double sheet learning circuit. The ultrasonic transmitting circuit and the single / double sheet learning circuit are respectively connected to the microcontroller, and the ultrasonic transmitting probe is connected to the ultrasonic transmitting circuit. The receiving end includes an ultrasonic receiving circuit and an intensity indicator. The intensity indicator is connected to the ultrasonic receiving circuit, and the ultrasonic receiving probe is connected to the ultrasonic receiving circuit. The ultrasonic receiving circuit is connected to a microcontroller via a signal synchronization line.

2. The ultrasonic-based single / double sheet detection sensor as described in claim 1, characterized in that, The single / double sheet learning circuit is used to learn and store the acoustic energy characteristics of single / double sheet detection objects of different detection materials.

3. The ultrasonic-based single / double sheet detection sensor as described in claim 1, characterized in that, The ultrasonic receiving probe includes a signal receiver, which is used to convert the received ultrasonic pulses into electrical signals.

4. The ultrasonic-based single / double sheet detection sensor as described in claim 1, characterized in that, The intensity indicator is connected to an intensity indicator light, and the brightness of the intensity indicator light is used to represent the magnitude of the sound wave energy.

5. The ultrasonic-based single / double sheet detection sensor as described in claim 1, characterized in that, The transmitter also includes a signal output circuit, which is connected to the microcontroller and is used to output the detection results.

6. The ultrasonic-based single / double sheet detection sensor as described in claim 1, characterized in that, The ultrasonic-based single / double sheet detection sensor includes a power supply circuit, and the transmitting end and the receiving end are respectively connected to the power supply circuit.

7. The ultrasonic-based single / double sheet detection sensor as described in claim 5, characterized in that, The transmitter includes a transmitter housing, and the receiver includes a receiver housing. Both the transmitter housing and the receiver housing are made of copper-plated nickel.

8. The ultrasonic-based single / double sheet detection sensor as described in claim 7, characterized in that, The microcontroller, ultrasonic transmitting circuit, single / double sheet learning circuit, and signal output circuit are all located inside the transmitter housing, while the ultrasonic transmitting probe extends out from the transmitter housing.

9. The ultrasonic-based single / double sheet detection sensor as described in claim 7, characterized in that, The ultrasonic receiving circuit and intensity indicator are both located inside the receiver housing, while the ultrasonic receiving probe extends out from the receiver housing.

Images