Electronic paper driving circuit

Abstract

The utility model discloses an electronic paper drive circuit, which comprises a Bluetooth control circuit, a display connection circuit, an electric quantity detection circuit and an alarm circuit, the Bluetooth control circuit is electrically connected with the display connection circuit, the electric quantity detection circuit and the alarm circuit respectively, the Bluetooth control circuit comprises a controller U1, and the controller U1 is electrically connected with the display connection circuit. A 24 pin of the controller U1 is connected with an antenna end ANT through a resistor R1, one end, close to the controller U1, of the resistor R1 is grounded through a capacitor C1, and one end, away from the controller U1, of the resistor R1 is grounded through a capacitor C2. The electronic paper driving circuit disclosed by the utility model is linked through the Bluetooth control circuit, the display connection circuit, the electric quantity detection circuit and the alarm circuit, so that information transmitted by an upper computer is wirelessly acquired, wireless display control is realized, and the electronic paper driving circuit has the advantages of high practicability, simplicity, convenience, stable structure and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of electronic paper ink screen driving, and in particular relates to an electronic paper driving circuit. Background Art

[0002] Electronic paper, also known as digital paper, is an ultra-thin and ultra-light display screen used in various fields such as supermarkets. Many existing electronic papers are still wired to the host computer to obtain and display information transmitted from the host computer. The wired connection method is not only time-consuming and laborious, but also not easy to disassemble and assemble.

[0003] Therefore, further improvements are made to the above problems. Utility Model Content

[0004] The main purpose of the utility model is to provide an electronic paper driving circuit, which is linked by a Bluetooth control circuit, a display connection circuit, a power detection circuit and an alarm circuit, so as to wirelessly obtain information transmitted by a host computer and realize wireless display control. It has the advantages of high practicality, simplicity, convenience and stable structure.

[0005] To achieve the above purpose, the utility model provides an electronic paper driving circuit, including a Bluetooth control circuit, a display connection circuit, a power detection circuit and an alarm circuit, wherein the Bluetooth control circuit is electrically connected to the display connection circuit (connected to the electronic paper ink screen), the power detection circuit and the alarm circuit respectively, wherein:

[0006] The Bluetooth control circuit includes a controller U1, a 24-pin of the controller U1 is connected to an antenna terminal ANT through a resistor R1, an end of the resistor R1 close to the controller U1 is grounded through a capacitor C1, and an end of the resistor R1 away from the controller U1 is grounded through a capacitor C2;

[0007] The display connection circuit includes a connector FPC1, wherein pin 17 of the connector FPC1 is electrically connected to pin 4 of the controller U1, pin 16 of the connector FPC1 is electrically connected to pin 3 of the controller U1, pin 14 of the connector FPC1 is electrically connected to pin 1 of the controller U1, pin 13 of the connector FPC1 is electrically connected to pin 32 of the controller U1, pin 12 of the connector FPC1 is electrically connected to pin 31 of the controller U1, and pin 11 of the connector FPC1 is electrically connected to pin 30 of the controller U1;

[0008] The power detection circuit includes a resistor R3, one end of the resistor R3 is connected to the battery power supply terminal BAT+ and the other end of the resistor R3 is electrically connected to the pin 22 of the controller U1;

[0009] The alarm circuit includes a speaker B1 and a transistor Q1, the base of the transistor Q1 is electrically connected to pin 29 of the controller U1 through a resistor R5, the collector of the transistor Q1 is electrically connected to the negative terminal of the speaker B1 in one way and to the anode of the diode D1 in another way, the cathode of the diode D1 is electrically connected to the positive terminal of the speaker B1 in one way and to the battery power supply terminal BAT+ through a resistor R4 in another way.

[0010] As a further preferred technical solution of the above technical solution, a crystal oscillator Y1 is connected between pins 17 and 18 of the controller U1, and one end of the crystal oscillator Y1 close to pin 17 of the controller U1 is also grounded through a capacitor C3, and one end of the crystal oscillator Y1 close to pin 18 of the controller U1 is also grounded through a capacitor C4.

[0011] As a further preferred technical solution of the above technical solution, an inductor L1 is connected between pins 19 and 20 of the controller U1 and resistor R2 is connected at both ends of the inductor L1, one end of the inductor L1 close to pin 19 of the controller U1 is also grounded through a capacitor C6, and one end of the inductor L1 close to pin 20 of the controller U1 is also grounded through a capacitor C5.

[0012] As a further preferred technical solution of the above technical solution, the emitter of the transistor Q1 is grounded.

[0013] As a further preferred technical solution of the above technical solution, one end of the resistor R4 close to the diode D1 is also grounded through a capacitor C7. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model discloses a Bluetooth control circuit diagram of an electronic paper driving circuit.

[0015] Figure 2 The utility model discloses a display connection circuit diagram of an electronic paper driving circuit.

[0016] Figure 3 The utility model discloses an electric quantity detection circuit diagram of an electronic paper driving circuit.

[0017] Figure 4 The utility model discloses an alarm circuit diagram of an electronic paper driving circuit. DETAILED DESCRIPTION

[0018] The following description is used to disclose the utility model so that those skilled in the art can implement the utility model. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the utility model defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the utility model.

[0019] The utility model discloses an electronic paper driving circuit. The specific embodiments of the utility model are further described below in conjunction with preferred embodiments.

[0020] In the embodiments of the present invention, those skilled in the art note that the electronic paper ink screen and the like involved in the present invention may be regarded as prior art.

[0021] Preferred embodiments.

[0022] like Figure 1-4 As shown, the utility model discloses an electronic paper driving circuit, including a Bluetooth control circuit, a display connection circuit, a power detection circuit and an alarm circuit, wherein the Bluetooth control circuit is electrically connected to the display connection circuit (connected to the electronic paper ink screen), the power detection circuit and the alarm circuit respectively, wherein:

[0023] The Bluetooth control circuit includes a controller U1, pin 24 of the controller U1 is connected to an antenna terminal ANT (for wireless information transmission and reception) through a resistor R1, an end of the resistor R1 close to the controller U1 is grounded through a capacitor C1, and an end of the resistor R1 away from the controller U1 is grounded through a capacitor C2;

[0024] The display connection circuit includes a connector FPC1, wherein pin 17 of the connector FPC1 is electrically connected to pin 4 of the controller U1, pin 16 of the connector FPC1 is electrically connected to pin 3 of the controller U1, pin 14 of the connector FPC1 is electrically connected to pin 1 of the controller U1, pin 13 of the connector FPC1 is electrically connected to pin 32 of the controller U1, pin 12 of the connector FPC1 is electrically connected to pin 31 of the controller U1, and pin 11 of the connector FPC1 is electrically connected to pin 30 of the controller U1;

[0025] The power detection circuit includes a resistor R3, one end of which is connected to the battery power supply terminal BAT+ and the other end of which is electrically connected to the 22 pin of the controller U1 (to detect the lighting of the button battery in real time);

[0026] The alarm circuit includes a speaker B1 and a transistor Q1, the base of the transistor Q1 is electrically connected to pin 29 of the controller U1 through a resistor R5, the collector of the transistor Q1 is electrically connected to the negative terminal of the speaker B1 in one way and to the anode of a diode D1 in another way, the cathode of the diode D1 is electrically connected to the positive terminal of the speaker B1 in one way and to the battery power supply terminal BAT+ through a resistor R4 in another way (the alarm circuit is used for fault alarm, including low battery alarm, etc.).

[0027] Specifically, a crystal oscillator Y1 is connected between pins 17 and 18 of the controller U1, and one end of the crystal oscillator Y1 close to pin 17 of the controller U1 is also grounded through a capacitor C3, and one end of the crystal oscillator Y1 close to pin 18 of the controller U1 is also grounded through a capacitor C4.

[0028] More specifically, an inductor L1 is connected between pins 19 and 20 of the controller U1 and resistor R2 is connected at both ends of the inductor L1. One end of the inductor L1 close to pin 19 of the controller U1 is also grounded through a capacitor C6 and one end of the inductor L1 close to pin 20 of the controller U1 is also grounded through a capacitor C5.

[0029] Furthermore, the emitter of the transistor Q1 is grounded.

[0030] Furthermore, one end of the resistor R4 close to the diode D1 is also grounded via a capacitor C7.

[0031] It is worth mentioning that the technical features such as the electronic paper ink screen involved in this utility model patent application should be regarded as prior art. The specific structure, working principle and possible control method and spatial layout method of these technical features can be selected according to the conventional methods in the field, and should not be regarded as the invention point of this utility model patent. This utility model patent will not be further elaborated.

[0032] For those skilled in the art, it is still possible to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. An electronic paper driving circuit, characterized in that: It includes a Bluetooth control circuit, a display connection circuit, a power detection circuit and an alarm circuit, wherein the Bluetooth control circuit is electrically connected to the display connection circuit, the power detection circuit and the alarm circuit respectively, wherein: The Bluetooth control circuit includes a controller U1, a 24-pin of the controller U1 is connected to an antenna terminal ANT through a resistor R1, an end of the resistor R1 close to the controller U1 is grounded through a capacitor C1, and an end of the resistor R1 away from the controller U1 is grounded through a capacitor C2; The display connection circuit includes a connector FPC1, wherein pin 17 of the connector FPC1 is electrically connected to pin 4 of the controller U1, pin 16 of the connector FPC1 is electrically connected to pin 3 of the controller U1, pin 14 of the connector FPC1 is electrically connected to pin 1 of the controller U1, pin 13 of the connector FPC1 is electrically connected to pin 32 of the controller U1, pin 12 of the connector FPC1 is electrically connected to pin 31 of the controller U1, and pin 11 of the connector FPC1 is electrically connected to pin 30 of the controller U1; The power detection circuit includes a resistor R3, one end of the resistor R3 is connected to the battery power supply terminal BAT+ and the other end of the resistor R3 is electrically connected to the pin 22 of the controller U1; The alarm circuit includes a speaker B1 and a transistor Q1, the base of the transistor Q1 is electrically connected to pin 29 of the controller U1 through a resistor R5, the collector of the transistor Q1 is electrically connected to the negative terminal of the speaker B1 in one way and to the anode of the diode D1 in another way, the cathode of the diode D1 is electrically connected to the positive terminal of the speaker B1 in one way and to the battery power supply terminal BAT+ through a resistor R4 in another way.

2. The electronic paper driving circuit according to claim 1, characterized in that: A crystal oscillator Y1 is connected between pins 17 and 18 of the controller U1. One end of the crystal oscillator Y1 close to pin 17 of the controller U1 is grounded through a capacitor C3, and one end of the crystal oscillator Y1 close to pin 18 of the controller U1 is grounded through a capacitor C4.

3. The electronic paper driving circuit according to claim 2, characterized in that: An inductor L1 is connected between pins 19 and 20 of the controller U1, and resistor R2 is connected to both ends of the inductor L1. One end of the inductor L1 close to pin 19 of the controller U1 is also grounded through a capacitor C6, and one end of the inductor L1 close to pin 20 of the controller U1 is also grounded through a capacitor C5.

4. The electronic paper driving circuit according to claim 3, characterized in that: The emitter of the transistor Q1 is grounded.

5. The electronic paper driving circuit according to claim 4, characterized in that: One end of the resistor R4 close to the diode D1 is also grounded via a capacitor C7.

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