Non-contact information acquisition device

Abstract

The utility model belongs to the technical field of man-machine interaction, and particularly relates to a non-contact information acquisition device which comprises a plurality of signal receiving modules which are all connected with a signal processing module. The signal receiving module comprises a substrate, the upper surface of the substrate is coated with a humidity-sensitive material layer, an interdigital electrode is arranged between the humidity-sensitive material layer and the substrate, and the interdigital electrode is etched on the upper surface of the substrate through laser; the signal processing module comprises a capacitance acquisition board and a single-chip microcomputer, the interdigital electrodes in the multiple signal receiving modules are electrically connected with corresponding ports in the capacitance acquisition board, and the output end of the capacitance acquisition board is electrically connected with the single-chip microcomputer. Based on the humidity sensing principle, operation instructions can be sensed without physical contact, and many defects of a traditional capacitive touch screen are perfectly overcome.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of man-machine interaction technology, more particularly to a non -contact information acquisition device. BACKGROUND

[0002] In today's digital interaction era, touch screen as the key interface of man-machine interaction is widely used in various electronic devices. Traditional capacitive touch screen with its good touch sensitivity and multi-touch function, occupies an important position in the field of consumer electronics, industrial control and other fields. However, the traditional capacitive touch screen takes human body current sensing as the working principle, relies on direct physical contact to realize operation, and this technology has a series of defects that are difficult to overcome.

[0003] In daily use scene, the problem of conductor interference is common, for example, electronic products are put in the pocket, if there are metal objects in the pocket to contact the screen, false operation will be triggered, which will cause the screen to automatically light up or open the application. At the same time, when multiple conductors approach the screen at the same time, the number and position of touch points will be misjudged, resulting in non-response operation. From the cost and maintenance point of view, the manufacturing process of capacitive touch screen is complex, special materials such as indium tin oxide and high-precision process are needed, resulting in high manufacturing cost. Once the touch fails, the display is abnormal and other faults occur, due to the complex internal structure, the maintenance difficulty and cost are high, usually the whole touch screen component needs to be replaced, which increases the time and economic cost. In dry environment, electrostatic discharge not only interferes with the normal work of the screen, causes temporary failure and jumping, and in severe cases, it will also damage the circuit components, shorten the service life, and even cause data loss or damage, which will bring great loss to the user. In addition, in the field of public health, such as hospitals, airports, stations and other places with large number of people and high mobility, traditional capacitive touch screen is easily touched by different people, which is easy to become a medium for bacteria and virus transmission, greatly increasing the risk of cross infection.

[0004] With the development of science and technology and the improvement of people's requirements for man-machine interaction experience, the demand for new interaction mode and device is more and more urgent. CONTENT OF THE UTILITY MODEL

[0005] The utility model provides a non -contact information acquisition device for the above problem.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A non -contact information acquisition device, comprising a plurality of signal receiving modules, a plurality of signal receiving modules are connected with signal processing module;

[0008] The signal receiving module comprises a substrate, a humidity-sensitive material layer is coated on the upper surface of the substrate, and an interdigital electrode is arranged between the humidity-sensitive material layer and the substrate, the interdigital electrode being etched on the upper surface of the substrate by laser;

[0009] The signal processing module comprises a capacitive collection plate and a single-chip microcomputer, the interdigital electrodes in the plurality of signal receiving modules are electrically connected with corresponding ports in the capacitive collection plate, and an output end of the capacitive collection plate is electrically connected with the single-chip microcomputer.

[0010] Further, a light-emitting display layer is arranged on the lower surface of the substrate, a thin-film heater is arranged between the light-emitting display layer and the substrate, the thin-film heater being etched on the lower surface of the substrate by laser, the thin-film heater being electrically connected with a relay, and the relay being electrically connected with the single-chip microcomputer.

[0011] Still further, the humidity-sensitive material layer is made of graphene oxide or barium titanate.

[0012] Still further, the light-emitting display layer is made of rare earth long-afterglow luminescent material SrAl2O4:Eu 2+ Dy 3+ .

[0013] Still further, the substrate is made of any one of polyimide, Kevlar, polysulfone resin, polyetherimide, polyphenylene sulfide, phenol formaldehyde resin, polystyrene and lignin.

[0014] Compared with the prior art, the utility model has the following advantages:

[0015] The human skin participates in the metabolism of the whole body, accounts for 18-20% of the total water content of the human body, which makes the sweat on the surface of the human skin become the source of remote non-contact control of the humidity sensor. The utility model is based on the humidity sensing principle, can perceive the operation instruction without physical contact, and perfectly avoids many disadvantages of the traditional capacitive touch screen. It has unique advantages in hygiene safety, environmental adaptability and operation convenience, and is expected to solve the application problems of the traditional capacitive touch screen in specific scenes, and bring new changes to the interaction mode of electronic equipment. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 It is a structural schematic view of the signal receiving module of the utility model;

[0017] Fig. 2 It is a signal processing flow chart of the signal processing module of the utility model;

[0018] Fig. 3 It is a structural schematic view of the plurality of signal receiving modules spliced in the utility model;

[0019] Fig. 4The final product diagram of multiple signal receiving modules is formed by the utility model;

[0020] In the figure, substrate 1, humidity sensitive material layer 2, interdigital electrode 3, capacitance collection plate 4, single-chip microcomputer 5, light-emitting display layer 6, thin film heater 7, relay 8. DETAILED DESCRIPTION

[0021] In order to further illustrate the technical scheme of the utility model, the utility model is further illustrated by examples below.

[0022] As Figs. 1 to 4 Indicated, a kind of non-contact information acquisition device, including multiple signal receiving modules, multiple the signal receiving modules are connected with signal processing module;

[0023] The signal receiving module includes substrate 1, the material of substrate 1 is any one in polyimide, Kevlar, polysulfone resin, polyetherimide, polyphenylene sulfide, phenolic resin, polystyrene and lignin, humidity sensitive material layer 2 is coated on the upper surface of substrate 1, the material of humidity sensitive material layer 2 is graphene oxide or barium titanate, interdigital electrode 3 is arranged between humidity sensitive material layer 2 and substrate 1, and the interdigital electrode 3 is etched on the upper surface of substrate 1 by laser;Light-emitting display layer 6 is arranged on the lower surface of substrate 1, and the material of light-emitting display layer 6 is rare earth long afterglow luminescent material SrAl2O4:Eu 2+ Dy 3+， Thin film heater 7 is arranged between light-emitting display layer 6 and substrate 1, and the thin film heater 7 is etched on the lower surface of substrate 1 by laser, the thin film heater 7 is electrically connected with relay 8, and the relay 8 is electrically connected with single-chip microcomputer 5.

[0024] The signal processing module includes capacitance collection plate 4 and single-chip microcomputer 5, the single-chip microcomputer 5 is connected with power supply, the corresponding port in capacitance collection plate 4 is electrically connected with interdigital electrode 3 in multiple signal receiving modules, and the output end of capacitance collection plate 4 is electrically connected with single-chip microcomputer 5.

[0025] Working principle: preset trigger signal, when finger approaches humidity sensitive material layer 2, interdigital electrode 3 is electrified, and signal is transmitted to capacitance collection plate 4, capacitance collection plate 4 transmits the received signal to single-chip microcomputer 5, and single-chip microcomputer 5 receives signal, controls corresponding relay 8 to be connected, so that corresponding thin film heater 7 is electrified, heat is generated, and then light-emitting display layer 6 emits light, and simultaneously single-chip microcomputer 5 can also output signal to display screen and display.

[0026] The main features and advantages of the present application are shown and described above, for those skilled in the art, it is clear that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the present application is defined by the appended claims rather than the above description, therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application.

[0027] In addition, it should be understood that, although the present application is described in terms of embodiments, not every embodiment contains only one independent technical solution, the description of the specification is only for the sake of clarity, those skilled in the art should consider the specification as a whole, the technical solutions in each embodiment can also be combined appropriately to form other embodiments that those skilled in the art can understand.

Claims

1. A non-contact information acquisition device, characterized by: The application relates to a signal receiving device. The signal receiving device comprises a plurality of signal receiving modules, and the signal receiving modules are connected with a signal processing module. The signal receiving module comprises a substrate (1), a humidity-sensitive material layer (2) coated on the upper surface of the substrate (1), and an interdigital electrode (3) arranged between the humidity-sensitive material layer (2) and the substrate (1), wherein the interdigital electrode (3) is etched on the upper surface of the substrate (1) by laser.

2. The non-contact information collection device of claim 1, wherein: The signal processing module comprises a capacitance collection plate (4) and a single-chip microcomputer (5), the interdigital electrode (3) in the plurality of signal receiving modules is electrically connected with a corresponding port in the capacitance collection plate (4), and the output end of the capacitance collection plate (4) is electrically connected with the single-chip microcomputer (5).

3. The non-contact information collection device of claim 1, wherein: A light-emitting display layer (6) is arranged on the lower surface of the substrate (1), a thin-film heater (7) is arranged between the light-emitting display layer (6) and the substrate (1), the thin-film heater (7) is etched on the lower surface of the substrate (1) by laser, the thin-film heater (7) is electrically connected with a relay (8), and the relay (8) is electrically connected with the single-chip microcomputer (5).

4. The non-contact information collection device of claim 2, wherein: The material of the light-emitting display layer (6) is rare earth long afterglow luminescent material SrAl2O4:Eu 2+ Dy 3+ .

5. The non-contact information gathering device of claim 1, wherein: The humidity-sensitive material layer (2) is made of graphene oxide or barium titanate. The substrate (1) is made of any one of polyimide, Kevlar, polysulfone resin, polyetherimide, polyphenylene sulfide, phenolic resin, polystyrene and lignin.

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