WO2022068004A1

WO2022068004A1 - Terminal humidity detection method and system

Info

Publication number: WO2022068004A1
Application number: PCT/CN2020/128937
Authority: WO
Inventors: 武建高; 李文; 沈奕鹏; 黄洪文; 姜栋才
Original assignee: 深圳市联新移动医疗科技有限公司
Priority date: 2020-09-30
Filing date: 2020-11-16
Publication date: 2022-04-07

Abstract

Disclosed are a terminal humidity detection method and system. The method comprises: obtaining an input voltage of a charging port of a terminal; determining, according to the input voltage, whether liquid exists in the charging port of the terminal; and if the liquid exists, outputting charging prompt information, the charging prompt information being used for prompting that charging connection is prohibited. According to the present invention, the input voltage of the charging port of the terminal can be analyzed to determine whether liquid exists in the charging port, and then charging prohibition prompt is conducted when the liquid exists, so that the safety performance of the terminal is effectively guaranteed; and compared with the mode in the prior art that a rubber plug is provided at a charging port to achieve charging prohibition, the rubber plug is not needed in the present invention, the appearance tidiness is kept, charging is prohibited in time for a user functionally, and convenience is provided for the user.

Description

A terminal humidity detection method and system

priority

This disclosure requires a Chinese patent application with an application date of September 30, 2020, with an application number of "202011061063.X" and an application title of "An Intelligent Humidity Detection Charging Device and Humidity Detection Method"; and the application The priority of the Chinese patent application filed on September 30, 2020 with the application number "202011065145.1" and the application name "An NDA terminal charging port humidity detection method and NDA terminal", the entire content of which is by reference Incorporated in this disclosure.

technical field

The present disclosure relates to the technical field of terminal humidity detection, and in particular, to a terminal humidity detection method and system.

Background technique

Information terminals have been widely used in hospital information processing systems. In the hospital environment, the charging port of the information terminal will inevitably enter the corrosive liquid containing electrolytes, such as sodium chloride solution. If the charging port enters this kind of liquid, it is particularly easy to corrode the PIN pin part. The consequences of corrosion are functional problems such as communication failure and inability to charge electricity. The more serious situation is that after corroding the charging pin, it will lead to contact resistance. If it becomes larger, it will generate high temperature at the contact part during charging, which will bring security risks.

Therefore, the existing technology still needs to be improved and improved.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present disclosure is to provide a terminal humidity detection method and system in view of the above-mentioned defects of the prior art, aiming to solve the problem that the charging port of the information terminal in the prior art is easy to enter the liquid and easily lead to potential safety hazards. .

In order to solve the above-mentioned technical problems, the technical solutions adopted in the present disclosure are as follows:

In a first aspect, the present disclosure provides a terminal humidity detection method, wherein the method includes:

Obtain the input voltage of the charging port of the terminal;

According to the input voltage, determine whether there is liquid in the charging port of the terminal;

If there is liquid, the terminal outputs charging prompt information, and the charging prompt information is used to prompt that charging connection is prohibited.

In an implementation manner, the acquiring humidity information of the charging port of the terminal includes:

When the charging port of the terminal is inserted into the charging device, the moisture detection chip is placed in the detection cycle;

According to the moisture detection chip, the terminal obtains the input voltage of the charging port of the terminal.

In an implementation manner, the determining whether there is liquid in the charging port of the terminal according to the input voltage includes:

determining the contact resistance between the charging port of the terminal and the charging device according to the input voltage;

Comparing the contact resistance with preset resistance information to generate a comparison result;

According to the comparison result, it is determined that there is liquid in the charging port of the terminal.

In an implementation manner, if there is liquid, output charging prompt information, and the charging prompt information is used to prompt that charging connection is prohibited, including:

If there is liquid in the charging port of the terminal, when charging the charging port of the terminal, wake up the screen of the terminal and report abnormal information;

Displaying a charging prompt message prohibiting charging on the screen of the terminal;

When the charging port of the terminal is inserted into the charging device, the power supply to the terminal is cut off to cut off the power supply to the main board of the terminal.

In an implementation manner, the moisture detection chip is provided with a moisture detection chip, and the moisture detection chip is connected to the main board of the terminal.

In one implementation, the method further includes:

Obtain the capacitance value of the adjacent pin on the charging part of the charging device connected to the terminal;

The capacitance value is analyzed by the capacitance detection unit to determine whether there is liquid on the pin;

If there is liquid in the charging part, the charging device cuts off the power supply of the charging device to the terminal through the switch unit.

In one implementation, the method further includes:

If there is liquid in the charging part, the charging device will give an indication through the indicator light unit.

In a second aspect, the present disclosure provides a terminal humidity detection system, wherein the system includes a terminal and a charging device connected to the terminal; the terminal is provided with a charging port, and the charging port is used for connecting the charging device, The charging port is provided with a moisture detection chip, and the moisture detection chip is connected to the main board of the terminal; the moisture detection chip is used to detect the input voltage of the charging port of the terminal, obtain the humidity information of the charging port, and When it is detected that there is liquid in the charging port, the power supply of the charging device to the main board of the terminal is cut off.

In one implementation, the moisture detection chip includes a programmable current source and an analog-to-digital converter for detecting the input voltage.

In one implementation, the analog-to-digital converter is an 8-bit analog-to-digital converter.

In an implementation manner, the terminal further includes a display screen, and the display screen is connected to the main board of the terminal.

In an implementation manner, the charging device includes: a charging portion movably connected to the charging port of the terminal, a charging cable disposed on one side of the charging portion, and one end of the charging cable is connected to the charging port. A charging part, the other end of the charging cable is connected with a connecting part; a humidity detection component is arranged on the charging cable, and the humidity detection component includes a circuit board, and a capacitance detection unit and a connection with the capacitance are arranged on the circuit board. A switch unit connected to the detection unit, the capacitance detection unit is used to detect the capacitance value of the adjacent pins on the charging part, and the capacitance value is used to reflect the humidity of the charging part.

In an implementation manner, the humidity detection unit further includes a MOS tube control unit, and the MOS tube control unit is connected to the capacitance detection unit.

In an implementation manner, an indicator light unit is further provided on the circuit board, and the indicator light unit is connected to the capacitance detection unit.

In an implementation manner, a power management unit is further provided on the circuit board, and the power management unit is connected to the capacitance detection unit and the indicator light unit.

In an implementation manner, the charging part is any one of a micro USB connector, a micro USB type-c connector, and a type-c connector.

In an implementation manner, the connection part is any one of a type-a plug, a plug adapter, or a type-a female connector of a computer.

Beneficial effects: Compared with the prior art, the present disclosure provides a terminal humidity detection method and system. The present disclosure first obtains the input voltage of the charging port of the terminal; and then determines whether the charging port of the terminal is not based on the input voltage. There is liquid; if there is liquid, the charging prompt information is output, and the charging prompt information is used to prompt that the charging connection is prohibited, which effectively ensures the safety performance of the terminal and avoids potential safety hazards. In addition, compared with the prior art method of disposing a rubber plug at the charging port to prohibit charging, the present disclosure does not need to use a rubber plug, maintains a clean appearance, and is functionally timely when the user prohibits charging. convenient.

Description of drawings

FIG. 1 is a flowchart of a specific implementation of a terminal humidity detection method provided by an embodiment of the present disclosure.

FIG. 2 is a schematic diagram of a terminal humidity detection system provided by an embodiment of the present disclosure.

FIG. 3 is a schematic structural diagram of a terminal with a humidity detection function according to an embodiment of the present disclosure.

FIG. 4 is a schematic structural diagram of a charging device with a humidity detection function according to an embodiment of the present disclosure.

Detailed ways

In order to make the objectives, technical solutions and effects of the present disclosure clearer and clearer, the present disclosure will be described in further detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present disclosure, but not to limit the present disclosure.

Information terminals have been widely used in hospital information processing systems. In the hospital environment, the charging port of the information terminal will inevitably enter the corrosive liquid containing electrolytes, such as sodium chloride solution. If the charging port enters this kind of liquid, it is particularly easy to corrode the PIN pin part. The consequences of corrosion are functional problems such as communication failure and inability to charge electricity. The more serious situation is that after corroding the charging pin, it will lead to contact resistance. If it becomes larger, it will generate high temperature at the contact part during charging, which will bring security risks. Although there is a method in the prior art to prevent the liquid from entering the charging port by arranging a rubber plug at the charging port, the frequent setting of the rubber plug will damage the charging port and be unsightly.

In order to solve the problem in the prior art, this embodiment provides a terminal humidity detection method and system. In this embodiment, the input voltage of the charging port of the terminal is obtained first; then, according to the input voltage, it is determined whether the charging port of the terminal exists. liquid; if there is liquid, the charging prompt information is output, and the charging prompt information is used to prompt that the charging connection is prohibited, which effectively ensures the safety performance of the terminal and avoids potential safety hazards. And compared with the prior art method in which a rubber plug is installed at the charging port to prohibit charging, this embodiment does not need to use a rubber plug, maintains the cleanliness of the appearance, and can be used by the user if the user prohibits charging in time. to offer comfort.

Exemplary method

The method in this embodiment can be applied to smart terminals, such as mobile phone devices, ipad devices, or NDA (Nurse Digital Assistant) terminals used in a hospital environment, where the NAD terminal refers to a mobile terminal applied to a medical clinical data system equipment. In specific application, this embodiment is mainly applied in terminal China, as shown in FIG. 1 , the method includes the following steps:

Step S100, acquiring the input voltage of the charging port of the terminal.

In the hospital environment, the charging port of the information terminal will inevitably enter the corrosive liquid containing electrolytes, such as sodium chloride solution. If the charging port enters this kind of liquid, it is particularly easy to corrode the PIN pin part. The consequences of corrosion are functional problems such as communication failure and inability to charge electricity. The more serious situation is that after corroding the charging pin, it will lead to contact resistance. If it becomes larger, it will generate high temperature at the contact part during charging, which will bring security risks. It can be seen that when liquid enters the charging port of the terminal, the contact resistance increases. Based on this, this embodiment can analyze whether there is liquid in the charging port by acquiring the contact resistance at the charging port of the terminal. The contact resistance is related to the input voltage of the charging port, so in this embodiment, the input voltage of the charging port is obtained first.

In an implementation manner, the terminal of the present embodiment is provided with a moisture detection chip in advance, and the moisture detection chip is connected with the main board of the terminal, and is used for analyzing by obtaining the input voltage of the charging port of the terminal, In order to find out whether there is liquid contamination in the charging port. Moreover, the moisture detection chip in this embodiment can only be implemented within the detection period. Therefore, in this embodiment, after the charging port of the terminal is inserted into the charging device, the moisture detection chip can be placed in the detection cycle, and then the input voltage of the charging port of the terminal can be obtained according to the moisture detection chip. . That is to say, the moisture detection chip in this embodiment can work only after the charging port is inserted into the charging device (ie, externally powered).

Step S200, according to the input voltage, determine whether there is liquid in the charging port of the terminal.

In this embodiment, after the input voltage is obtained, this embodiment can calculate the contact resistance between the charging port and the charging device according to the input voltage. In an implementation manner, the moisture detection chip in this embodiment includes a programmable current source and an analog-to-digital converter for detecting the input voltage, and the analog-to-digital converter is an 8-bit analog-to-digital converter. When the input voltage value is read, the contact resistance between the input voltage VIN and the output voltage GND can be calculated by the formula: Rvin=Vvin/Isrc, where Vvin is a value, which can be viewed from the value of register 0x08, Isrc according to the input voltage. Then, the main board in the terminal in this embodiment can compare the calculated contact resistance with preset resistance information to generate a comparison result. The preset resistance information is used to determine whether the contact resistance is too large, and if the contact resistance is too large, a comparison result that the contact resistance is too large is generated. However, because the contact resistance is too large, it can indicate that liquid has entered the charging port, and even corrosion occurs, resulting in excessive contact resistance between the charging port and the charging device (ie, the charging pins of the charging device). Therefore, the comparison result is used to represent the humidity information, and according to the comparison result, it can be determined whether there is liquid in the charging port.

Step S300: If there is liquid, output charging prompt information, where the charging prompt information is used to prompt that charging connection is prohibited.

In this embodiment, when it is determined that there is liquid in the charging port of the terminal, the screen of the terminal can be woken up and abnormal information can be reported when charging the charging port of the terminal. In addition, in this embodiment, a charging prompt message indicating that charging is prohibited is also displayed on the screen of the terminal, as shown in Fig. 3. In Fig. 3, the terminal displays "Detected that the USB port is wet or a non-standard device is inserted, please check. Is the USB port and cable normal” charging prompt message, thus prompting the user to prohibit charging.

Since it is detected that there is liquid in the charging port, after the charging port of the terminal is inserted into the charging device, the present embodiment can cut off the power supply to the terminal to cut off the power supply to the main board of the terminal. It can be clearly seen from FIG. 2 that the moisture detection chip is connected to the main board of the terminal, and after the moisture detection chip detects that there is liquid in the terminal, the moisture detection chip will report to the terminal. The control board in the device sends the power supply between the main board and the charging device to cut off, so as to avoid potential safety hazards.

In addition, the terminal humidity detection method in this embodiment can also be applied to a charging device connected to the terminal. When there is liquid on the charging part of the charging device and is inserted into the charging port of the terminal, or the charging part is inserted into a liquid-infiltrating device When there is liquid in the charging port of the terminal, the capacitance value between adjacent pins on the charging part will change, the contact resistance between the charging part and the charging port will increase, and high temperature heat will be generated, causing security incident. To this end, in this embodiment, a humidity detection component is arranged on the charging line, and a capacitance detection unit is arranged on the humidity detection component. Then, by analyzing the capacitance value, the contact resistance is determined, and then the humidity on the charging part is determined, that is, it is determined whether there is liquid on the charging part.

In addition, the circuit board of the humidity detection component in this embodiment is further provided with a switch unit, which is used to cut off the power supply of the charging device to the terminal when it is detected that there is liquid in the charging part. That is to say, in this embodiment, after the capacitance detection unit detects the capacitance value between the adjacent pins on the charging part, the contact resistance is obtained according to the calculation, and then the contact resistance of the charging part can be determined according to the contact resistance. humidity, and then the switch unit can determine whether to cut off the power supply of the charging line according to the determined humidity, and cut off the power supply to the charging line if it is determined that there is liquid according to the humidity.

Specifically, in this embodiment, after the capacitance detection unit detects the capacitance values of two adjacent pins of the charging part, the contact resistance between the charging part and the charging port is calculated according to the capacitance values, and then the calculated contact resistance is calculated. The resistance is compared with preset resistance information to generate a comparison result. The preset resistance information is used to determine whether the contact resistance is too large, and if the contact resistance is too large, a comparison result that the contact resistance is too large is generated. However, because the contact resistance is too large, it may indicate that there is liquid on the charging part, and even corrosion occurs, resulting in excessive contact resistance between the charging port and the charging device (ie, the charging pins of the charging device). Therefore, the comparison result is used to represent the humidity information of the charging part, and according to the comparison result, it can be determined whether there is liquid on the charging part. In an implementation manner, the capacitance detection unit in this embodiment may use a humidity detection sensor chip, for example, a humidity detection sensor chip with a chip model of HIH-3602 or HM1500. In a specific application, in this embodiment, an appropriate chip model can be selected according to the actual situation, and is designed on the charging line through a circuit.

In an implementation manner, a MOS tube control unit is provided on the charging line in this embodiment, and the tube control unit is connected to the capacitance detection unit. In this embodiment, the MOS transistor control unit is used to control the power supply path of the charging line. In addition, in this embodiment, the MOS tube control unit can be connected to the switch unit, because the switch unit can cut off the power supply of the charging device to the terminal in time when it is detected that there is liquid on the charging part . The MOS tube control unit is used to control the power supply path of the charging line, so in this embodiment, the power supply path can be switched by the MOS tube control unit, so as to cut off the power supply to the terminal motherboard.

In an implementation manner, in this embodiment, when it is detected that there is liquid on the charging portion, an indicator light unit will be used for prompting. Specifically, in this embodiment, an indicator light unit is further provided on the circuit board, and the indicator light unit is connected to the capacitance detection unit. In order to remind the user more intuitively, in this embodiment, after the capacitance detection unit detects the capacitance value between adjacent pins on the charging part, the contact resistance is obtained according to the calculation, and then according to the contact resistance After the humidity of the charging portion is determined, the indicator light unit can be controlled to work according to the humidity to prompt the user. For example, this embodiment can be implemented by the indicator unit flashing lights of different colors when it is detected that there is liquid on the charging portion. In an implementation manner, the indicator light unit can be set as an indicator light, and the indicator light can display different colors. When it is detected that there is liquid on the charging portion, the indicator light can display red, and the indicator light can be displayed in red. When it is detected that there is no liquid on the charging portion, the indicator light can display green, which means that the charging device 20 is normally charging at this time.

In addition, in this embodiment, when it is detected that there is liquid in the charging portion, charging prompt information may be output from a terminal connected to the charging portion. Specifically, the terminal in this embodiment includes a display screen, and the display screen is connected to the main board of the terminal. When it is detected that there is liquid on the charging part, when charging the charging port of the terminal, the display screen of the terminal can be woken up, and abnormal information can be reported. In addition, in this embodiment, a charging prompt message indicating that charging is prohibited is also displayed on the display screen of the terminal. For example, the terminal displays the message "It is detected that the USB port is wet or a non-standard device is inserted, please check whether the USB port and cable are normal". Charging prompt information, thus prompting the user to prohibit charging.

Exemplary Equipment

Based on the above embodiments, the present disclosure also provides a terminal humidity detection system. As shown in FIG. 2 , the system includes a terminal and a charging device connected to the terminal. The terminal in this embodiment has a charging port humidity detection function. As shown in FIG. 2 , the terminal 100 in this embodiment is provided with a charging port 10 , and the charging port 10 is used for connecting the charging device 20 . 10 is provided with a moisture detection chip 30, and the moisture detection chip 30 is connected with the main board 40 of the terminal 100; the moisture detection chip 30 is used to detect the input voltage of the charging port 10 of the terminal 100, and obtain the value of the charging port. humidity information, and when liquid is detected in the charging port 10 , the power supply of the charging device 20 to the main board 40 of the terminal 100 is cut off.

Specifically, in this embodiment, after the charging port 10 of the terminal 100 is inserted into the charging device 20, the moisture detection chip 30 can be placed in the detection cycle, and then the moisture detection chip 30 can be used to obtain the moisture detection chip 30. The input voltage of the charging port 10 of the terminal 100 . That is to say, the moisture detection chip 30 in this embodiment can work only after the charging port 10 is inserted into the charging device 20 (ie, externally powered).

In an implementation manner, the moisture detection chip 30 in this embodiment includes a programmable current source and an analog-to-digital converter for detecting the input voltage, and the analog-to-digital converter is an 8-bit analog-to-digital converter. When the input voltage value is read, the contact resistance between the input voltage VIN and the output voltage GND can be calculated by the formula: Rvin=Vvin/Isrc, where Vvin is a value, which can be viewed from the value of register 0x08, Isrc according to the input voltage. Then, the main board 40 in the terminal 100 in this embodiment can compare the calculated contact resistance with preset resistance information to generate a comparison result. The preset resistance information is used for judging whether the contact resistance is too large, and if the contact resistance is too large, a comparison result that the contact resistance is too large is generated, and the comparison result is used to reflect the humidity information. However, because the contact resistance is too large, it can indicate that liquid has entered the charging port, and even corrosion occurs, resulting in excessive contact resistance between the charging port and the charging device (ie, the charging pins of the charging device). Therefore, the comparison result is used to represent the humidity information, and according to the comparison result, it can be determined whether there is liquid in the charging port.

In addition, the terminal 100 in this embodiment further includes a display screen 50 , and the display screen 50 is connected to the main board 40 of the terminal 100 . When it is determined that there is liquid in the charging port 10 of the terminal 100 , the display screen 50 of the terminal 100 can be woken up and abnormal information can be reported when the charging port 10 of the terminal 100 is being charged. In addition, in this embodiment, a charging prompt message indicating that charging is prohibited is also displayed on the display screen 50 of the terminal 100. For example, the terminal 100 displays “The USB port is wet or a non-standard device is detected. Please check whether the USB port and cable are not plugged in. "Normal" charging prompt message, thus prompting the user to prohibit charging.

In an implementation manner, as shown in FIG. 3 , the charging device 20 includes a charging part 210, the charging part 210 is connected to the charging port 10, and the charging part is a micro USB connector, a micro USB type Either the -c linker or the type-c linker. Correspondingly, the charging port 10 on the terminal 100 in this embodiment is also set as an interface matching the micro USB connector, the micro USB type-c connector and the type-c connector. In addition, the charging device 20 further includes: a charging cable 220 disposed on one side of the charging portion 210 , one end of the charging cable 220 is connected to the charging portion 210 , and the other end of the charging cable 220 is connected to a connection Section 230. Moreover, the connection part 230 is any one of a type-a plug, a plug-in adapter or a type-a female connector of a computer. That is to say, the charging device 20 in this embodiment is used to charge the terminal 100 .

The charging device in this embodiment also has a humidity detection function. Specifically, as shown in FIG. 2 , FIG. 3 and FIG. 4 , the charging device 20 includes: a charging port 10 (as shown in FIG. 4 ) connected to the terminal 100 . The flexibly connected charging portion 210 is provided on a charging cable 220 on one side of the charging portion 210 , one end of the charging cable 220 is connected to the charging portion 210 , and the other end of the charging cable 220 is connected to a connecting portion 230 ; The charging cable 220 is provided with a humidity detection component 240 , and the humidity detection component 240 includes a circuit board 241 . The circuit board 241 is provided with a capacitance detection unit 242 and a switch unit connected to the capacitance detection unit 242 . 243 , the switch unit is connected to the capacitance detection unit 242 . In this embodiment, the capacitance detection unit 242 is used to detect the capacitance value of the adjacent pins on the charging part, and the capacitance value is used to reflect the humidity of the charging part 210 .

Since there is liquid on the charging part 210 of the charging device 20 and is inserted into the charging port 10 of the terminal, or when the charging part 210 is inserted into the charging port 10 of the terminal 100 that is infiltrated with liquid, the charging is performed due to the presence of liquid. The capacitance value between adjacent pins on the part 210 will change, the contact resistance between the charging part 210 and the charging port 10 will increase, and high temperature heat will be generated, causing a safety accident. In this embodiment, a humidity detection unit 240 is arranged on the charging cable 220 , and a capacitance detection unit 242 is arranged on the humidity detection unit 240 . The capacitance value of the pin, and then the contact resistance is determined by analyzing the capacitance value, and then the humidity on the charging part 210 is determined, that is, whether there is liquid on the charging part 210 is determined. In addition, the circuit board of the humidity detection component 240 in this embodiment is further provided with a switch unit 243 , and the switch unit 243 is used to cut off the connection between the charging device 20 and the terminal 100 when liquid is detected in the charging unit 210 . of power supply. That is to say, in this embodiment, after the capacitance detection unit 242 detects the capacitance value between the adjacent pins on the charging part 210, the contact resistance is obtained according to the calculation, and then the charging can be determined according to the contact resistance. Then, the switch unit can determine whether to cut off the power supply of the charging cable 220 according to the determined humidity, and cut off the power supply to the charging cable 220 if it is determined that there is liquid according to the humidity.

Specifically, in this embodiment, after the capacitance detection unit 242 detects the capacitance values of two adjacent pins of the charging part 210, the contact resistance between the charging part 210 and the charging port 10 is calculated according to the capacitance values, and then the The calculated contact resistance is compared with preset resistance information to generate a comparison result. The preset resistance information is used to determine whether the contact resistance is too large, and if the contact resistance is too large, a comparison result that the contact resistance is too large is generated. However, because the contact resistance is too large, it may indicate that there is liquid on the charging portion 210, or even corrosion occurs, resulting in excessive contact resistance between the charging port 10 and the charging device 20 (ie, the charging pins of the charging device). Therefore, the comparison result is used to represent the humidity information of the charging part 210 , and according to the comparison result, it can be determined whether there is liquid on the charging part 210 . In an implementation manner, the capacitance detection unit 242 in this embodiment may use a humidity detection sensor chip, such as a humidity detection sensor chip whose chip model is HIH-3602 or HM1500. In specific applications, in this embodiment, an appropriate chip model can be selected according to the actual situation, and is designed on the charging line 220 through a circuit.

In an implementation manner, the humidity detection unit 240 in this embodiment further includes a MOS tube control unit 221 , and the MOS tube control unit 221 is connected to the capacitance detection unit 242 . In this embodiment, the MOS transistor control unit 221 is used to control the power supply path of the charging line 220 . In addition, in this embodiment, the MOS tube control unit 221 can be connected to the switch unit 243 , because the switch unit 243 can cut off the charging device in time when it detects that there is liquid on the charging portion 210 . 20 power supplies to the terminal. The MOS tube control unit 221 is used to control the power supply path of the charging cable 220. Therefore, in this embodiment, the MOS tube control unit 221 can be used to switch the power supply path, so as to cut off the power supply to the terminal motherboard.

In addition, the circuit board 241 in this embodiment is further provided with an indicator light unit 244 , and the indicator light unit 244 is connected to the capacitance detection unit 242 . In order to remind the user more intuitively, in this embodiment, after the capacitance detection unit 242 detects the capacitance value between the adjacent pins on the charging part 210, the contact resistance is calculated according to the After the humidity of the charging part 210 can be determined by the contact resistance, the indicator light unit 244 can be controlled to work according to the humidity to prompt the user. For example, this embodiment can be implemented by the indicator light unit 244 flashing lights of different colors when it is detected that there is liquid on the charging portion 210 . In an implementation manner, the indicator light unit 244 can be set as an indicator light, and the indicator light can display different colors. When it is detected that there is liquid on the charging part 210, the indicator light can display red , and when it is detected that there is no liquid on the charging part 210 , the indicator light can display green, which means that the charging device 20 is normally charging at this time.

In this embodiment, a power management unit 245 is further disposed on the circuit board 241 , and the power management unit 245 is connected to the capacitance detection unit 242 and the indicator light unit 244 . The power management unit 242 in this embodiment is configured to provide the required voltages such as 1.8V and 2.8V for the capacitance detection unit 242 , the indicator light unit 244 and the like.

In an implementation manner, the circuit board 241 in this embodiment is disposed on the charging cable 220 at a position close to the charging portion 210 . In this way, the capacitance detection unit 242 can better detect whether there is liquid on the charging part 210 . In addition, the terminal 100 in this embodiment further includes a display screen 50 , and the display screen 50 is connected to the main board 40 of the terminal 100 . When it is detected that there is liquid on the charging part 210 , the display screen 50 of the terminal 100 can be woken up and abnormal information can be reported when the charging port 10 of the terminal 100 is being charged. In addition, in this embodiment, a charging prompt message indicating that charging is prohibited is also displayed on the display screen 50 of the terminal 100. For example, the terminal 100 displays “The USB port is wet or a non-standard device is detected. Please check whether the USB port and cable are not plugged in. "Normal" charging prompt message, thus prompting the user to prohibit charging.

In an implementation manner, as shown in FIG. 4 , the charging unit 210 is any one of a micro USB connector, a micro USB type-c connector, and a type-c connector. Correspondingly, the charging port 10 on the terminal 100 in this embodiment is also set as an interface matching the micro USB connector, the micro USB type-c connector and the type-c connector. In addition, the connecting portion 230 is also any one of a type-a plug, a plug adapter or a type-a female connector of a computer. That is to say, the charging device 20 in this embodiment is used to charge the terminal 100 .

In summary, the present disclosure discloses a terminal humidity detection method and system. The method includes: acquiring an input voltage of a charging port of a terminal; determining whether there is liquid in the charging port of the terminal according to the input voltage; if there is liquid , the charging prompt information is output, and the charging prompt information is used to prompt that the charging connection is prohibited. The present disclosure can determine whether there is liquid in the charging port by analyzing the input voltage of the charging port of the terminal, and then prompt the charging prohibition when there is liquid, effectively ensuring the safety performance of the terminal, and compared with the existing In the technology, the charging port is provided with a rubber stopper to realize the method of prohibiting charging. The present disclosure does not need to use a rubber stopper, which keeps the appearance clean, and the user prohibits charging in time in terms of function, which provides convenience for the user to use.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure, but not to limit them; although the present disclosure has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still be Modifications are made to the technical solutions described in the foregoing embodiments, or some technical features thereof are 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 disclosure.

Claims

A terminal humidity detection method, wherein the method comprises:

Obtain the input voltage of the charging port of the terminal;

According to the input voltage, determine whether there is liquid in the charging port of the terminal;

If there is liquid, the terminal outputs charging prompt information, and the charging prompt information is used to prompt that charging connection is prohibited.
The terminal humidity detection method according to claim 1, wherein the acquiring humidity information of the charging port of the terminal comprises:

When the charging port of the terminal is inserted into the charging device, the moisture detection chip is placed in the detection cycle;

According to the moisture detection chip, the terminal obtains the input voltage of the charging port of the terminal.
The terminal humidity detection method according to claim 1, wherein the determining whether there is liquid in the charging port of the terminal according to the input voltage comprises:

determining the contact resistance between the charging port of the terminal and the charging device according to the input voltage;

Comparing the contact resistance with preset resistance information to generate a comparison result;

According to the comparison result, it is determined that there is liquid in the charging port of the terminal.
The terminal humidity detection method according to claim 1, wherein if there is liquid, outputting charging prompt information, the charging prompt information is used to prompt that charging connection is prohibited, comprising:

If there is liquid in the charging port of the terminal, when charging the charging port of the terminal, wake up the screen of the terminal and report abnormal information;

Displaying a charging prompt message prohibiting charging on the screen of the terminal;

When the charging port of the terminal is inserted into the charging device, the power supply to the terminal is cut off to cut off the power supply to the main board of the terminal.
The terminal humidity detection method according to claim 2, wherein a moisture detection chip is provided in the moisture detection chip, and the moisture detection chip is connected to a main board of the terminal.
The terminal humidity detection method according to claim 1, wherein the method further comprises:

Obtain the capacitance value of the adjacent pin on the charging part of the charging device connected to the terminal;

The capacitance value is analyzed by the capacitance detection unit to determine whether there is liquid on the pin;

If there is liquid in the charging part, the charging device cuts off the power supply of the charging device to the terminal through the switch unit.
The terminal humidity detection method according to claim 6, wherein the method further comprises:

If there is liquid in the charging part, the charging device will give an indication through the indicator light unit.
A terminal humidity detection system, wherein the system includes a terminal and a charging device connected to the terminal; the terminal is provided with a charging port, the charging port is used for connecting the charging device, and the charging port is provided with a moisture detection device The chip, the moisture detection chip is connected with the main board of the terminal; the moisture detection chip is used to detect the input voltage of the charging port of the terminal, obtain the humidity information of the charging port, and detect that there is liquid in the charging port When the power is supplied to the main board of the terminal, the power supply of the charging device is cut off.
The terminal humidity detection system according to claim 8, wherein the moisture detection chip comprises a programmable current source and an analog-to-digital converter for detecting the input voltage.
The terminal humidity detection system according to claim 9, wherein the analog-to-digital converter is an 8-bit analog-to-digital converter.
The terminal humidity detection system according to claim 9, wherein the terminal further comprises a display screen, and the display screen is connected to the main board of the terminal.
The terminal humidity detection system according to claim 9, wherein the charging device comprises: a charging part movably connected to the charging port of the terminal, a charging cable provided on one side of the charging part, the One end of the charging wire is connected to the charging part, and the other end of the charging wire is connected to the connecting part; the charging wire is provided with a humidity detection component, the humidity detection component includes a circuit board, and a capacitor is provided on the circuit board A detection unit and a switch unit connected to the capacitance detection unit, the capacitance detection unit is used to detect the capacitance value of the adjacent pins on the charging part, and the capacitance value is used to reflect the humidity of the charging part .
The terminal humidity detection system according to claim 12, wherein the humidity detection unit further comprises a MOS tube control unit, and the MOS tube control unit is connected to the capacitance detection unit.
The terminal humidity detection system according to claim 12, wherein an indicator light unit is further provided on the circuit board, and the indicator light unit is connected with the capacitance detection unit.
The terminal humidity detection system device according to claim 14, wherein a power management unit is further provided on the circuit board, and the power management unit is connected to the capacitance detection unit and the indicator light unit.
The terminal humidity detection system according to claim 12, wherein the charging part is any one of a micro USB connector, a micro USB type-c connector and a type-c connector.
The terminal humidity detection system according to claim 12, wherein the connection part is any one of a type-a plug, a plug adapter or a type-a female connector of a computer.