CN210955079U - Random key input device - Google Patents
Random key input device Download PDFInfo
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- CN210955079U CN210955079U CN202020277795.1U CN202020277795U CN210955079U CN 210955079 U CN210955079 U CN 210955079U CN 202020277795 U CN202020277795 U CN 202020277795U CN 210955079 U CN210955079 U CN 210955079U
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Abstract
The utility model discloses a random key input device. The random key input device consists of a touch pad and a circuit board which are attached, wherein the touch pad is provided with touch keys, and transparent windows which are arranged according to specific shapes are arranged on the touch keys; the circuit board is provided with an indicating lamp group corresponding to the touch key, the indicating lamp group comprises a plurality of indicating lamps, and the indicating lamps correspond to the transparent window and are positioned on the back of the transparent window. The circuit board is also provided with a microprocessor. The microprocessor is used for generating random characters corresponding to the touch keys, displaying corresponding characters through the control indicator lamp, receiving touch input of the touch keys, enabling the touch input to correspond to the random characters corresponding to the touch keys, and uploading the random characters.
Description
Technical Field
The utility model relates to a digital keyboard, in particular to a digital keyboard for password or password input.
Background
Coded locks, access control systems and ATMs widely use numeric keyboards as keyboards for password or password input. The digital keyboard has the main defects that fingerprints sweat stains and other traces are easy to leave on the keys of the keyboard when the digital keyboard is used for inputting passwords, and technicians can easily reversely push out passwords or passwords according to the keys where the fingerprints and sweat stains are located. Such a general numeric keypad therefore presents such a security risk. In order to avoid the above risks, in the prior art, a random soft keyboard is generally adopted, and the random soft keyboard generally needs support of a touch display screen, which is a very good technical solution for a device which is a touch screen itself, such as a bank teller machine. For a non-touch display screen, an input mode of a random keyboard is required, and technical document WO2019223392a1 discloses a password acquisition method, transaction equipment and a terminal, wherein a numeric keyboard is used as a random password input disk, but the method requires the cooperation of user operation and is inconvenient to use. Both the two technical schemes are established on the basis of host support and display screen support, and if no host exists, such as a popular coded lock in the current market, both the two technical schemes are not suitable. In the coded lock, due to the consideration of the lock cost, a touch display screen is difficult to arrange, and the technical scheme adopted by WO2019223392A1 cannot be adopted due to the lack of the support of the display screen and a host.
Disclosure of Invention
The utility model discloses the problem that will solve: the risk problem exists when the ordinary numeric keyboard is used for inputting passwords.
In order to solve the above problem, the utility model discloses a scheme as follows:
the utility model relates to a random key input device, which comprises a touch pad and a circuit board; the touch pad is provided with a plurality of touch keys; the touch key is provided with a plurality of transparent windows; the front surface of the circuit board is provided with a plurality of indicator lamp groups; each indicator lamp group consists of a plurality of indicator lamps; the indicating lamp groups correspond to the touch keys one by one, and each indicating lamp in the indicating lamp groups corresponds to the transparent window on the touch key corresponding to the indicating lamp groups one by one; the front surface of the circuit board is attached to the back surface of the touch pad, and the indicator lamp is positioned on the back surface of the corresponding transparent window, so that when the indicator lamp is lightened, light emitted by the indicator lamp can be transmitted out through the corresponding transparent window; the transparent windows in the touch keys are arranged in a specific shape, so that when the indicator lamps on the back of the transparent windows are lightened according to different lightening combinations, the transparent windows in the touch keys are arranged to display different character patterns; the back of the circuit board is provided with a microprocessor; the microprocessor is connected with the touch key and the indicator light.
Further, the microprocessor is configured to:
randomly generating corresponding characters for the touch keys;
lighting the indicator lamps in the indicator lamp group corresponding to the touch key according to the generated characters, so that the transparent window of the touch key displays the patterns of the characters in an arrangement manner;
receiving a touch input of the touch key;
and corresponding the touch input of the touch key to the character corresponding to the touch key, and uploading the character.
Further, the indicator light adopts an LED.
Further, the transparent window comprises a transparent block and a lamp cavity positioned at the back of the transparent block; the indicating lamp protrudes out of the circuit board; when the circuit board is attached to the touch pad, the indicator lamp is clamped in the lamp cavity.
Further, the transparent windows on the touch key are arranged in a figure 8 shape, so that the transparent window arrangement can display 0 to 9 ten arabic numerals.
The technical effects of the utility model are as follows: compared with the prior art, the utility model discloses it is with low costs to be applicable to the tool to lock.
Drawings
Fig. 1 is a front view of an embodiment of the present invention and a schematic structural diagram of a touch panel.
Fig. 2 shows an example of randomly arranged characters displayed after the indicator light is turned on according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a side view of an embodiment of the present invention.
Fig. 4 is a schematic diagram of a circuit board structure according to an embodiment of the present invention.
Fig. 5 is a schematic structural diagram of the embodiment of the present invention in which the indicator light is matched with the transparent window.
Fig. 6 is a schematic diagram of a circuit connection structure according to an embodiment of the present invention.
The touch panel is characterized in that 1 is a touch panel, 11 is a touch key, 111 is a touch sensing panel, 12 is a transparent window, 121 is a transparent block, 122 is a lamp cavity, 2 is a circuit board, 21 is an indicating lamp group, 22 is an indicating lamp, 23 is a pin interface, and 3 is a microprocessor.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, 2, 3, 4, 5, 6, a random key input device includes a touch panel 1 and a circuit board 2. The random key input device of the embodiment is used for being installed on a lock and used as an input device for unlocking the lock to carry out password. The touch panel 1 and the circuit board 2 are mutually attached plates, wherein the back surface of the touch panel 1 is attached to the front surface of the circuit board 2. The touch panel 1 is provided with a plurality of touch keys 11. In the present embodiment, the touch keys 11 are 12 in total, and are used to input ten arabic numerals, # and 0 to 9 arabic numerals, respectively. The touch key 11 is implemented by a plurality of touch sensing pads 111 provided on the touch panel 1. Each touch key 11 corresponds to a touch sensing panel 111, and the touch sensing panel 111 is a capacitive touch input device. A plurality of transparent windows 12 are arranged in the touch key 11. The transparent window 12 is also formed by penetrating the opening of the touch sensing panel 111 and sealing the opening with a transparent block 121. The circuit board 2 is typically a common PCB board with a number of indicator light sets 21 on the front side and a microprocessor 3 on the back side. Each indicator light group 21 is composed of a plurality of indicator lights 22. Indicator light 22 is preferably an LED. Each group of indicator light groups 21 on the circuit board 2 is in one-to-one correspondence with each touch key 11 on the touch pad 1 and is in position correspondence, each indicator light 22 in the indicator light group 21 is in one-to-one correspondence with each transparent window 12 in the touch key 11 and is in position correspondence, and therefore, when the back surface of the touch pad 1 is attached to the front surface of the circuit board 2, each indicator light 22 is positioned on the back surface of the corresponding transparent window 12. The shape of the indicator light 22 corresponds to the shape of the transparent window 12. Each indicator 22 on the circuit board 2 protrudes from the surface of the circuit board 2, so that the back surface of the touch pad 1 and the front surface of the circuit board 2 are tightly attached, in this embodiment, a lamp cavity 122 is arranged on the back of the transparent block 121 on the transparent window 12, and when the back surface of the touch pad 1 and the front surface of the circuit board 2 are attached, the indicator 22 is clamped into the lamp cavity 122 of the corresponding transparent window 12. Thus, when the indicator lamp 22 is turned on, the light emitted from the indicator lamp 22 can be transmitted through the corresponding transparent window 12. The transparent windows 12 in the touch keys 11 are arranged in a specific shape, so that when the indicator lamps 22 on the back of the transparent windows 12 are lighted according to different lighting combinations, the transparent windows 12 in the touch keys 11 are arranged to display different character patterns. In order to be able to display 0 to 9 ten arabic numerals. Transparent windows 12 in the touch key 11 are arranged in a figure 8. Fig. 2 shows that the indicator lights 22 are illuminated in different combinations, showing ten arabic numerals from 0 to 9. The microprocessor 3 is connected with the indicator lamps 22 and the touch keys 11. In this embodiment, the circuit board 2 is provided with a pin interface 23, and the back surface of the touch panel 1 is provided with a connection pin. When the back surface of the touch pad 1 is attached to the front surface of the circuit board 2, the connection pin on the back surface of the touch pad 1 is inserted into the pin interface 23, so that the touch key on the touch pad 1 is connected to the microprocessor 3 through the connection pin and the pin interface 23. The microprocessor 3 realizes the following functions by executing a program:
when a password input request is received, each touch key 11 randomly generates corresponding characters, which are ten arabic numerals 0 to 9, respectively. And then, the indicator lamps 22 in the indicator lamp group 21 corresponding to the touch key 11 are lightened according to the generated characters, so that the transparent window 12 of the touch key 11 displays the patterns of the characters in an arrangement manner. Referring to fig. 2, fig. 2 shows a random 0 to 9 ten arabic numeral arrangements. Finally, the touch input of the touch key 11 is received, the touch input of the touch key 11 corresponds to the character corresponding to the touch key 11, and the character is uploaded. Obviously, this embodiment is used for a lock, so here the character is uploaded, i.e. transferred into the lock body. Obviously, the circuit board 2 leaves an interface for digital communication with the lock body. The interface is familiar to those skilled in the art, and the description is omitted here.
It is further noted that the microprocessor 3 may also be implemented by an FPGA, as understood by those skilled in the art.
In addition, it should be noted that, in the present embodiment, the transparent window 12 arranged in 8 shape is used for displaying ten arabic numerals from 0 to 9, and if other characters or other characters are required to be displayed as password input, the transparent window 12 may be arranged in other shapes and other numbers, for example, the transparent window 12 on the touch key 11 is arranged in a lattice structure of 5 × 5, so that each touch key 11 can display english characters such as a-Z. At this time, the random key input device can also be used as a screen for interaction between a user and the lock, for example, when the lock needs other operations by the user, the operation prompt can be displayed by the transparent window 12 after the combination is lighted by the control indicator lamp 22.
Claims (4)
1. A random key input device is characterized by comprising a touch pad and a circuit board; the touch pad is provided with a plurality of touch keys; the touch key is provided with a plurality of transparent windows; the front surface of the circuit board is provided with a plurality of indicator lamp groups; each indicator lamp group consists of a plurality of indicator lamps; the indicating lamp groups correspond to the touch keys one by one, and each indicating lamp in the indicating lamp groups corresponds to the transparent window on the touch key corresponding to the indicating lamp groups one by one; the front surface of the circuit board is attached to the back surface of the touch pad, and the indicator lamp is positioned on the back surface of the corresponding transparent window, so that when the indicator lamp is lightened, light emitted by the indicator lamp can be transmitted out through the corresponding transparent window; the transparent windows in the touch keys are arranged in a specific shape, so that when the indicator lamps on the back of the transparent windows are lightened according to different lightening combinations, the transparent windows in the touch keys are arranged to display different character patterns; the back of the circuit board is provided with a microprocessor; the microprocessor is connected with the touch key and the indicator light.
2. The random key input device of claim 1, wherein the indicator light is an LED.
3. The random key input device of claim 1, wherein the transparent window comprises a transparent block and a lamp cavity at a back of the transparent block; the indicating lamp protrudes out of the circuit board; when the circuit board is attached to the touch pad, the indicator lamp is clamped in the lamp cavity.
4. A random key input device as recited in claim 1, wherein the transparent windows on the touch key are arranged in a figure 8 such that the transparent window arrangement is capable of displaying between 0 and 9 ten arabic numerals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020277795.1U CN210955079U (en) | 2020-03-09 | 2020-03-09 | Random key input device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020277795.1U CN210955079U (en) | 2020-03-09 | 2020-03-09 | Random key input device |
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| Publication Number | Publication Date |
|---|---|
| CN210955079U true CN210955079U (en) | 2020-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020277795.1U Active CN210955079U (en) | 2020-03-09 | 2020-03-09 | Random key input device |
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| CN (1) | CN210955079U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111090896A (en) * | 2020-03-09 | 2020-05-01 | 南京东屋电气有限公司 | Random key input device |
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2020
- 2020-03-09 CN CN202020277795.1U patent/CN210955079U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111090896A (en) * | 2020-03-09 | 2020-05-01 | 南京东屋电气有限公司 | Random key input device |
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