CN213484123U

CN213484123U - Type-C interface charging wire with charging power measurement and display functions

Info

Publication number: CN213484123U
Application number: CN202022955490.4U
Authority: CN
Inventors: 张远颂
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-11
Filing date: 2020-12-11
Publication date: 2021-06-18
Anticipated expiration: 2030-12-11

Abstract

The utility model discloses a Type-C interface charging wire of area charging power measurement and demonstration, be close to the power measurement and the display module of Type-C C first end between Type-C A head, Type-C C head and the two, power measurement and display module include microcontroller U1, ADC chip U2, OLED display screen U3 and steady voltage LDO chip U4. Use the utility model discloses, when consumer or engineer's charging wire supplied power to the power supply target, can clearly understand relevant numerical value directly perceivedly.

Description

Type-C interface charging wire with charging power measurement and display functions

Technical Field

The utility model relates to a technical field that charges specifically is a take Type-C interface charging wire of charging power measurement and demonstration.

Background

In recent years, many charging standard protocols for electronic products such as mobile phones and tablets have appeared in the market, and the values of charging power, voltage, and current prescribed by each standard protocol are different.

In the process of developing electronic products, engineers need to know and evaluate the power consumption of the products in different states such as normal operation, standby, and sleep, and to make improvements to meet the requirements of relevant standards.

If the consumer or engineer wants to know the power, voltage and current values mentioned above, they can only measure with a dedicated meter, which is impractical for most consumers and adds inconvenience to the engineer.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a take Type-C interface charging wire of charging power measurement and demonstration to solve the problem of proposing among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a Type-C interface charging wire with a charging power measuring and displaying function comprises a Type-C A head, a Type-C C head and a power measuring and displaying module, wherein the power measuring and displaying module is arranged between the Type-C A head and the Type-C C head and is close to one end of the Type-C C head, the power measuring and displaying module comprises a microcontroller U1, an ADC chip U2, an OLED display screen U3 and a voltage stabilizing LDO chip U4, a pin 1 of the Type-C A head interface is connected with a capacitor C1, a resistor R1, a capacitor C2, a pin 1 of the Type-C C head interface and a Vin port of the LDO chip U4, the other end of the capacitor C4 is connected with a capacitor C4, a GND port of the LDO chip U4 and ground, the other end of the capacitor C4 is connected with a GND port of the LDO chip U4, a pin 1 of the capacitor C4, a pin 2 of the ADC chip U4 and the OLED display screen U4, the other end of the resistor R4 is connected with the Type-5 head 4 and the ADC chip U4, pin 6 of the ADC chip U2 is connected with pin 3 of the microcontroller U1, pin 7 of the ADC chip U2 is connected with pin 4 of the microcontroller U1, and pins 6-8 of the microcontroller U1 are connected with pins 3-6 of the OLED display screen U3.

As a further technical solution of the present invention: the microcontroller U1 is of type HK32F030MJ4M 6.

As a further technical solution of the present invention: the model of the LDO chip U4 is SGM 2205-3.3V.

As a further technical solution of the present invention: the model of the ADC chip U2 is CS 1237-SO.

As a further technical solution of the present invention: the specification model of the OLED display screen U3 is 0.54 inch 96 × 32 resolution.

Compared with the prior art, the beneficial effects of the utility model are that: use the utility model discloses, when consumer or engineer's charging wire supplied power to the power supply target, can clearly understand relevant numerical value directly perceivedly.

Drawings

Fig. 1 is a schematic diagram of the present invention.

Fig. 2 is a circuit diagram of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1: referring to fig. 1 and 2, a Type-C interface charging line with charging power measurement and display includes a Type-C A head, a Type-C C head, and a power measurement and display module between the two heads near the first end of the Type-C C head, the power measurement and display module includes a microcontroller U1, an ADC chip U2, an OLED display U3, and a voltage regulation LDO chip U4, a pin 1 of the Type-C A head interface is connected to a capacitor C1, a resistor R1, a capacitor C2, a pin 1 of the Type-C C head interface, and a Vin port of an LDO chip U4, the other end of a capacitor C2 is connected to a capacitor C5, a GND port of the LDO chip U4, and ground, the other end of a capacitor C5 is connected to a Vout port of the LDO chip U4, a capacitor C4, a capacitor C7, a pin 1 of an ADC chip U3687458, a pin 2 of the ADC chip U2, and a pin 2 of the OLED display U2, and the other end of the resistor R2 are connected to a pin 2 of the microcontroller U2, pin 5 of the Type-C C header interface is connected with a resistor R6 and a pin 3 of an ADC chip U2, pin 6 of the ADC chip U2 is connected with pin 3 of a microcontroller U1, pin 7 of the ADC chip U2 is connected with pin 4 of a microcontroller U1, and pins 6-8 of the microcontroller U1 are connected with pins 3-6 of an OLED display screen U3.

The circuit gets electricity from the power cord through LDO step-down chip on the circuit board, then steps down to 3.3V output and supplies power for whole circuit module.

The functions are as follows: 1. detection of charging voltage: two voltage dividing resistors are connected in series on a power line and connected to a ground wire, and a detection point between the two voltage dividing resistors is detected through an analog-to-digital converter built in the microcontroller U1, so that the voltage on the power line can be detected, namely the value of the charging voltage.

2. Detection of charging current: the ground wire end is connected with a current sampling resistor (the resistance value is 0.005 ohm) in series, when a target is connected with a power supply line, a circuit loop is generated, voltage detection is carried out on a detection point of the sampling resistor through a 24-bit ADC chip, then a voltage value measured by the 24-bit ADC is read out through a serial bus by a microcontroller U1, and then the relation between the voltage, the current and the resistor is realized: and calculating the current value, wherein the calculation result is the current flowing through the target, namely the value of the charging current. The technical advance of the detection circuit and the detection method lies in that a 24-bit ADC chip with ultrahigh resolution is adopted, and the detection precision of the current can reach mA level when a sampling resistor with 0.005 ohm is used.

3. And (3) displaying data: the microcontroller U1 controls the OLED display screen on the module through the serial communication interface to display the measured or calculated values on the OLED display screen. These values include, but are not limited to: supply power, supply voltage, supply current, etc.

Example 2: on the basis of example 1: the microcontroller U1 is model number HK32F030MJ4M 6. The model of the LDO chip U4 is SGM 2205-3.3V. The model of the ADC chip U2 is CS 1237-SO. The specification model of the OLED display screen U3 is 0.54 inch 96 × 32 resolution.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A Type-C interface charging wire with a charging power measurement and display function comprises a Type-C A head, a Type-C C head and a power measurement and display module between the two heads and close to one end of the Type-C C head, and is characterized in that the power measurement and display module comprises a microcontroller U1, an ADC chip U2, an OLED display screen U3 and a voltage-stabilizing LDO chip U4, a pin 1 of the Type-C A head interface is connected with a capacitor C1, a resistor R1, a capacitor C2, a pin 1 of the Type-C C head interface and a Vin port of an LDO chip U4, the other end of the capacitor C2 is connected with a capacitor C2, a GND port of the LDO chip U4 and ground, the other end of the capacitor C53 is connected with a Vout port of the LDO chip U4, a capacitor C4, a capacitor C847, a pin 1 of the ADC chip U2, a pin 2 of the ADC chip U2 and a pin 2 of the OLED display screen U2, and the other end of the resistor R2 and a pin 2 are connected with a pin 368742, pin 5 of the Type-C C header interface is connected with a resistor R6 and a pin 3 of an ADC chip U2, pin 6 of the ADC chip U2 is connected with pin 3 of a microcontroller U1, pin 7 of the ADC chip U2 is connected with pin 4 of a microcontroller U1, and pins 6-8 of the microcontroller U1 are connected with pins 3-6 of an OLED display screen U3.

2. The Type-C interface charging wire with the charging power measurement and display function according to claim 1, wherein the Type of the microcontroller U1 is HK32F030MJ4M 6.

3. The Type-C interface charging wire with the charging power measurement and display function according to claim 1, wherein the model of the LDO chip U4 is SGM 2205-3.3V.

4. The Type-C interface charging wire with the charging power measurement and display function according to claim 1, wherein the model of the ADC chip U2 is CS 1237-SO.

5. The Type-C interface charging wire with the charging power measurement and display function according to claim 4, wherein the specification model number of the OLED display screen U3 is 0.54 inches 96 x 32 resolution.