CN115077371A - Sensor for controlling intelligent vehicle through binary coding - Google Patents

Abstract

The invention discloses a sensor for controlling an intelligent vehicle through binary coding, which comprises two parallel sandwich structure flexible strain sensors arranged at the proximal end fingertip joints of an index finger and a middle finger, wherein a flexible circuit module with the functions of signal acquisition, signal processing and signal sending is attached to the sandwich structure flexible strain sensors, the flexible strain sensors are controlled through the motion of the two fingers to complete binary coding, and binary information is processed and sent through the flexible circuit module to complete the control of the intelligent vehicle.

Description

A sensor that controls smart cars through binary coding

technical field

The invention relates to the technical field of flexible sensing, in particular to a sensor for controlling a smart car through binary coding.

Background technique

Wearable strain sensors, as a robustly developed flexible and stretchable device, have many advantages such as high efficiency, long cycle life and excellent cycle stability, which communicate the connection between traditional strain sensors and planar electronic devices. Deepening the fusion between sensing and interaction has been widely used in medical diagnosis, motion detection, human-computer interaction and other fields.

Binary coding has a wide range of applications in electronic computers, remote control, and communications. There are two stable states in electronic components, for example, the level of voltage, the turn-on and turn-off of transistors, and the charging and discharging of capacitors. The two states of these devices can just be used to represent the two digital "0" and "1" of the binary code. Therefore, the binary code is physically easy to implement, and has strong anti-interference and high reliability. At the same time, the operation rules of binary codes are simple and suitable for computer logic operations.

For human-computer interaction work, intelligent instruments often need to perform algorithm processing on the received control signals, including signal recognition, and then convert them into binary codes that can be operated by single-chip microcomputers, which greatly increases the interaction time, and the recognition program is more complicated. , which increases the difficulty of human-computer interaction, so it is very necessary to design a sensor that can directly carry out binary coding to control smart cars.

SUMMARY OF THE INVENTION

In order to overcome the above-mentioned defects in the prior art, the present invention provides a sensor for controlling a smart car through binary coding, using polyethylene foam acrylic double-sided tape to transfer laser-induced graphene, and constructing a sandwich structure on CNTs/PDMS electrodes Sensing module, two sandwich-structure flexible strain sensors are placed in parallel at the proximal fingertip joint of the index finger and middle finger. The binary coding is completed by the movement of the two fingers, and the flexible circuit module processes and sends binary signals to complete the movement of the smart car. control.

In order to solve the above-mentioned technical problems, the technical scheme adopted in the present invention is:

A sensor for controlling a smart car through binary coding, including two parallel sandwich structure flexible strain sensors placed at the proximal fingertip joints of the index finger and the middle finger, the sandwich structure flexible strain sensor is attached with a signal acquisition, signal processing , Flexible circuit module with signal transmission function.

Further, the sandwich-structure flexible strain sensor includes two vertical and oppositely bonded laser-induced graphene electrode layers, and a CNTs/PDMS electrode sandwich is sandwiched between the laser-induced graphene electrode layers.

Further, the laser-induced graphene electrode layer is prepared into a specific shape by ablating a polyimide film by an ultraviolet laser.

Further, the laser-induced graphene electrode layer is transferred through polyethylene foam acrylic double-sided tape, and the electrode pins are connected through conductive copper foil.

Further, the CNTs/PDMS electrode interlayer is uniformly mixed according to a mass ratio of CNTs to PDMS of 1:10, and is prepared into a cross shape by injection molding and hot pressing.

Further, the flexible circuit module includes a signal acquisition module, a signal processing module and a signal transmission module.

Further, in the stop state, when one finger moves twice, the "00" signal is output, and the smart car starts; when two fingers move twice, the "01" signal is output, and the smart car moves to the left; when the two fingers move Twice action, output "10" signal, smart car moves to the right; in motion state, when two fingers act twice, output "00" signal, smart car brakes.

beneficial effect

Compared with the prior art, the present invention has the following beneficial effects:

1. The use of laser-induced graphene as an electrode simplifies the material preparation process, reduces the environmental pollution caused by the material preparation process, and reduces costs;

2. Using polyethylene foam acrylic double-sided tape to transfer graphene electrodes, a transfer technology that simplifies the process is adopted, which improves the manufacturing efficiency, and the polyethylene foam substrate greatly improves the strain performance of the electrodes;

3. The flexible strain sensor is used to directly perform binary coding to realize some simple mechanical control operations, which can avoid the complex signal identification process, shorten the interaction time and reduce the interaction cost.

Description of drawings

1 is a schematic structural diagram of a sensor for controlling a smart car through binary coding according to the present invention;

FIG. 2 is a schematic structural diagram of a sandwich structure flexible strain sensor;

Figure 3 is a control process image of one embodiment of the sensor of the present invention.

reference number

1. Sandwich structure flexible strain sensor, 2. Copper wire, 3. Polyethylene foam acrylic double-sided tape, 4. Laser-induced graphene electrode layer, 5. CNTs/PDMS electrode interlayer, 6. Conductive copper foil.

Detailed ways

In order to better illustrate and describe the content of the present invention, the following description will be carried out in conjunction with the accompanying drawings and implementation examples:

As shown in Figures 1-3, the present invention discloses a sensor for controlling a smart car through binary coding, including two parallel sandwich structure flexible strain sensors 1 placed at the proximal fingertip joints of the index finger and the middle finger. The sandwich structure flexible strain sensor 1 is attached with a flexible circuit module having functions of signal acquisition, signal processing and signal transmission.

Further, the sandwich-structure flexible strain sensor 1 includes two vertical and oppositely bonded laser-induced graphene electrode layers 4 , and a CNTs/PDMS electrode interlayer 5 is sandwiched between the laser-induced graphene electrode layers 4 .

Further, the sandwich structure flexible strain sensor 1 is connected in parallel through copper wires 2 .

Further, the laser-induced graphene electrode layer 4 is prepared into a specific shape by ablating a polyimide film with an ultraviolet laser.

Further, the laser-induced graphene electrode layer 4 is transferred through polyethylene foam acrylic double-sided tape 3, and the electrode pins are connected through conductive copper foil 6.

Further, the CNTs/PDMS electrode interlayer 5 is uniformly mixed according to a mass ratio of CNTs to PDMS of 1:10, and is prepared into a cross shape by injection molding and hot pressing.

Further, the flexible circuit module includes a signal acquisition module, a signal processing module and a signal transmission module.

Further, in the stop state, when one finger moves twice, the "00" signal is output, and the smart car starts; when two fingers move twice, the "01" signal is output, and the smart car moves to the left; when the two fingers move Twice action, output "10" signal, smart car moves to the right; in motion state, when two fingers act twice, output "00" signal, smart car brakes.

Specifically, the sandwich structure flexible strain sensor 1 connected in parallel is attached to the proximal fingertip joint of the index finger and the middle finger, and the output of a specific signal is realized by controlling the different movement modes of the two fingers. Since the binary code contains "0" and The two states of "1" can be defined as "0" when a single finger is bent, and "1" when two fingers are bent at the same time. Using the multiple bending of the fingers, the binary code containing specific information is output, and the binary code is used to complete the smart car. motion control.

If the target location is in front of the starting point, the “00” signal is output by two actions first, and the “00” signal is output by two actions when it reaches the right side of the target location, the smart car is stopped, and the “01” signal is output by two actions. Move to the left to the target location, the last two actions are "00", stop the smart car, and adjust the command flexibly when dealing with complex road conditions, so that the car can reach the target location.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the technical solutions of the present invention have been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they are still The technical solutions described in the foregoing embodiments may be modified, or some technical features thereof may be equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (7)

1. A sensor for controlling a smart car by binary coding, characterized in that: comprising two parallel sandwich structure flexible strain sensors (1) placed at the proximal fingertip joints of the index finger and the middle finger, the sandwich structure flexible strain sensor The sensor (1) is attached with a flexible circuit module with functions of signal acquisition, signal processing and signal transmission. 2. A sensor for controlling a smart car by binary coding according to claim 1, wherein the sandwich structure flexible strain sensor (1) comprises two vertical and oppositely attached laser-induced graphene electrode layers ( 4), a CNTs/PDMS electrode interlayer (5) is sandwiched in the middle of the laser-induced graphene electrode layer (4). 3 . The sensor for controlling a smart car through binary coding according to claim 2 , wherein the sandwich structure flexible strain sensor ( 1 ) is connected in parallel through copper wires ( 2 ). 4 . 4. A sensor for controlling a smart car by binary coding according to claim 3, wherein the laser-induced graphene electrode layer (4) is transferred by polyethylene foam acrylic double-sided tape (3), And the electrode pins are connected through the conductive copper foil (6). 5. A sensor for controlling a smart car through binary coding according to claim 4, characterized in that: the CNTs/PDMS electrode interlayer (5) is uniformly mixed according to the mass ratio of CNTs to PDMS of 1:10, and the Die hot pressing method to prepare cross shape. 6 . The sensor for controlling a smart car through binary coding according to claim 5 , wherein the flexible circuit module comprises a signal acquisition module, a signal processing module and a signal transmission module. 7 . 7. A sensor for controlling a smart car by binary coding according to claim 6, wherein: in the stopped state, when one finger acts twice, the "00" signal is output, and the smart car starts; when two When the finger moves twice, the "01" signal is output, and the smart car moves to the left; when the two fingers move twice, the "10" signal is output, and the smart car moves to the right; in the motion state, when the two fingers move twice, the smart car moves to the right. Output "00" signal, the smart car brakes.

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