WIFI signal detector and WIFI signal detection method

Abstract

The invention provides a WIFI signal detector and a WIFI signal detection method, the WIFI signal detector comprises a WIFI signal detection circuit, the WIFI signal detection circuit comprises a microcontroller, a charging integrated circuit, a step-down circuit and a battery which are electrically connected, and the length of the WIFI signal detector is smaller than or equal to a preset length. The microcontroller is used for detecting the network name of the target WIFI and the signal strength of the target WIFI, and a lightweight graphics library embedded system runs on the microcontroller; the charging integrated circuit is used for charging the battery; the step-down circuit is used for converting a first voltage signal output by the battery into a second voltage signal and transmitting the second voltage signal to the microcontroller so as to supply power to the microcontroller, and the second voltage signal is smaller than the first voltage signal. The detector is smaller in size, convenient to carry, convenient to read and more power-saving.

Description

Technical Field

[0001] The present application relates to the field of WIFI signal detection, and in particular, to a WIFI signal detector and a WIFI signal detection method. Background Art

[0002] Current WIFI signal detectors are generally too heavy and not easy to carry. Some signal detectors are outdated and do not support the latest WIFI technology and frequency bands (such as WIFI6 or 5GHz bands). Different WIFI signal detectors may use different standards to measure signal strength, resulting in different results when users use different tools. Summary of the invention

[0003] The main purpose of the present application is to provide a WIFI signal detector and a WIFI signal detection method, so as to at least solve the problem that the WIFI signal detector in the prior art is too thick and heavy, inconvenient to carry, and does not support some WIFI frequency bands.

[0004] In order to achieve the above-mentioned purpose, according to one aspect of the present application, a WIFI signal detector is provided, including a WIFI signal detection circuit, wherein the WIFI signal detection circuit includes an electrically connected microcontroller, a charging integrated circuit, a step-down circuit and a battery, and the length of the WIFI signal detector is less than or equal to a preset length, wherein the microcontroller is used to detect the network name of the target WIFI and the signal strength of the target WIFI, and a lightweight graphics library embedded system runs on the microcontroller, and the lightweight graphics library embedded system is used to display the network name and signal strength of the target WIFI detected by the microcontroller in a user interface; the charging integrated circuit is used to charge the battery; the step-down circuit is used to convert a first voltage signal output by the battery into a second voltage signal, and transmit the second voltage signal to the microcontroller to power the microcontroller, and the second voltage signal is less than the first voltage signal.

[0005] Optionally, the charging integrated circuit includes: a charging IC chip having multiple ports; a charging display module, a first end of the charging display module is electrically connected to a chip enable port of the charging IC chip, a second end of the charging display module is electrically connected to a charging port of the charging IC chip, a third end of the charging display module is electrically connected to an active low power mode port of the charging IC chip, and a fourth end of the charging display module is electrically connected to a first power supply end; a first voltage stabilizing module, a first end of the first voltage stabilizing module is electrically connected to a power input port of the charging IC chip, a second end of the first voltage stabilizing module is electrically connected to the first power supply end, and a third end of the first voltage stabilizing module is grounded; a second voltage stabilizing module, a first end of the second voltage stabilizing module is electrically connected to a temperature sensor port of the charging IC chip, a second end of the second voltage stabilizing module is electrically connected to a battery port of the charging IC chip, and a third end of the second voltage stabilizing module is grounded; a programming resistor, a first end of the programming resistor is electrically connected to a programming port of the charging IC chip, a second end of the programming resistor is grounded and electrically connected to a ground port of the charging IC chip.

[0006] Optionally, the charging display module includes: a first resistor module, a first end of the first resistor module is electrically connected to the charging port of the charging IC chip; a second resistor module, a first end of the second resistor module is electrically connected to the active low power mode port of the charging IC chip; a first LED, a first end of the first LED is electrically connected to the second end of the first resistor module, and the second end of the first LED is electrically connected to the chip enable port of the charging IC chip and the first power supply end respectively; a second LED, a first end of the second LED is electrically connected to the second end of the second resistor module, and the second end of the second LED is electrically connected to the first power supply end.

[0007] Optionally, the first voltage stabilizing module includes: a third resistor module, a first end of the third resistor module is electrically connected to the power input port of the charging IC chip; a fourth resistor module, a first end of the fourth resistor module is electrically connected to the second end of the third resistor module, and the second end of the fourth resistor module is grounded; a fifth resistor module, a first end of the fifth resistor module is electrically connected to the power input port of the charging IC chip, and the second end of the fifth resistor module is electrically connected to the first power end; a first capacitor, a first electrode of the first capacitor is electrically connected to the power input port of the charging IC chip, and a second electrode of the first capacitor is grounded.

[0008] Optionally, the second voltage stabilizing module includes: a temperature-sensitive element, a first end of the temperature-sensitive element is electrically connected to the temperature sensor port of the charging IC chip, a second end of the temperature-sensitive element is electrically connected to the battery port of the charging IC chip, and a third end of the temperature-sensitive element is grounded; a second capacitor, a first pole of the second capacitor is electrically connected to the battery port of the charging IC chip, and a second pole of the second capacitor is grounded.

[0009] Optionally, the step-down circuit includes: a step-down chip, a third capacitor, a first pole of the third capacitor is electrically connected to the input end and the second power supply end of the step-down chip, respectively, and a second pole of the third capacitor is electrically connected to the ground end of the step-down chip; a fourth capacitor, the fourth capacitor is connected in parallel with the third capacitor; a fifth capacitor, a first pole of the fifth capacitor is electrically connected to the output end and the second power supply end of the step-down chip, respectively, and a second pole of the fifth capacitor is electrically connected to the ground end of the step-down chip; and a sixth capacitor, the sixth capacitor is connected in parallel with the fifth capacitor.

[0010] Optionally, the WIFI signal detection circuit also includes an electrically connected voltage stabilizing unit and a battery protection module, the voltage stabilizing unit is electrically connected to the microcontroller, the voltage stabilizing unit is used to stabilize the voltage in the WIFI signal detection circuit, the battery protection module is electrically connected to the battery, and the battery protection module includes a target MOS tube, wherein when the circuit current of the WIFI signal detection circuit is greater than a preset value, the target MOS tube is disconnected.

[0011] Optionally, the WIFI signal detector also includes: an indicator light, which is electrically connected to the microcontroller and is used to display different colors and / or brightness according to the command signal when receiving a command signal sent by the microcontroller; and a display device, which is electrically connected to the microcontroller and is used to display the network name and signal strength of the target WIFI.

[0012] According to another aspect of the present application, a method for detecting a WIFI signal is provided. The method is applied to a microcontroller of a WIFI signal detection circuit in any one of the WIFI signal detectors. The method includes: detecting a network name of a target WIFI and a signal strength of the target WIFI; and displaying the network name of the target WIFI and the signal strength of the target WIFI on a user interface using a lightweight graphics library embedded system.

[0013] Optionally, detecting the signal strength of the target WIFI includes: acquiring an RSSI value of the target WIFI; and determining the signal strength of the target WIFI according to the RSSI value of the target WIFI, wherein an absolute value of the RSSI value of the target WIFI is inversely proportional to the signal strength of the target WIFI.

[0014] Applying the technical solution of the present application, the above-mentioned WIFI signal detector includes a WIFI signal detection circuit, the WIFI signal detection circuit includes an electrically connected microcontroller, a charging integrated circuit, a step-down circuit and a battery, the length of the WIFI signal detector is less than or equal to a preset length, wherein the microcontroller is used to detect the network name of the target WIFI and the signal strength of the target WIFI, and a lightweight graphics library embedded system is run on the microcontroller, and the lightweight graphics library embedded system is used to display the network name and signal strength of the target WIFI detected by the microcontroller in the user interface; the charging integrated circuit is used to charge the battery; the step-down circuit is used to convert the first voltage signal output by the battery into a second voltage signal, and transmit the second voltage signal to the microcontroller to power the microcontroller, and the second voltage signal is less than the first voltage signal. The detector first uses a microcontroller to read WIFI information (WIFI name, signal strength, etc.), and then uses a lightweight graphics library embedded system to output the WIFI information to the screen, which is not only more compact and convenient to carry, but also has an interactive interface that is easy to read and more power-saving, solving the problem that the WIFI signal detector in the prior art is too heavy, not easy to carry, and does not support some WIFI frequency bands. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings constituting part of the present application are used to provide a further understanding of the present application. The exemplary embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0016] Figure 1 A schematic structural diagram of a WIFI signal detection circuit provided in an embodiment of the present application is shown;

[0017] Figure 2 A schematic structural diagram of another WIFI signal detection circuit provided according to an embodiment of the present application is shown;

[0018] Figure 3 A schematic structural diagram of another WIFI signal detection circuit provided according to an embodiment of the present application is shown;

[0019] Figure 4 A schematic structural diagram of a voltage stabilizing unit provided according to an embodiment of the present application is shown;

[0020] Figure 5A schematic structural diagram of another WIFI signal detection circuit provided according to an embodiment of the present application is shown;

[0021] Figure 6 A schematic diagram of the structure of another WIFI signal detector provided according to an embodiment of the present application is shown;

[0022] Figure 7 A schematic diagram of the structure of a data interface provided according to an embodiment of the present application is shown;

[0023] Figure 8 A schematic flow chart of a method for detecting a WIFI signal provided according to an embodiment of the present application is shown.

[0024] The above drawings include the following reference numerals:

[0025] 10. microcontroller; 20. charging integrated circuit; 21. charging IC chip; 22. charging display module; 221. first LED; 222. second LED; 23. first voltage stabilizing module; 24. second voltage stabilizing module; 241. temperature sensitive element; 30. step-down circuit; 31. step-down chip; 40. battery; 50. voltage stabilizing unit; 60. battery protection module; 70. indicator light; 80. display device; 90. button; R1. first resistor module; R2. second resistor module; R3. third resistor module; R4. fourth resistor module; R5. fifth resistor module; R prog , programming resistor; C1, first capacitor; C2, second capacitor; C3, third capacitor; C4, fourth capacitor; C5, fifth capacitor; C6, sixth capacitor; Q, target MOS tube. DETAILED DESCRIPTION

[0026] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0027] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0028] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0029] For the convenience of description, some nouns or terms involved in the embodiments of the present application are explained below:

[0030] Lightweight Graphics Library: Light and Versatile Graphics Library, referred to as LVGL. LVGL is an open source graphics library, especially suitable for embedded systems, with the characteristics of lightweight, flexibility and high performance, which can help developers quickly build modern user interfaces.

[0031] As introduced in the background technology, current WIFI signal detectors are generally too heavy and not easy to carry. In addition, some signal detectors are old and may not support the latest WIFI technology and frequency bands (such as WIFI6 or 5GHz bands). Different WIFI signal detectors may use different standards to measure signal strength, resulting in different results when users use different tools.

[0032] In order to solve the problem that the WIFI signal detector in the prior art is too heavy, inconvenient to carry, and does not support some WIFI frequency bands, the embodiments of the present application provide a WIFI signal detector and a WIFI signal detection method.

[0033] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0034] In this embodiment, a WIFI signal detector is provided, such as Figure 1As shown, it includes a WIFI signal detection circuit, the WIFI signal detection circuit includes an electrically connected microcontroller 10, a charging integrated circuit 20, a step-down circuit 30 and a battery 40, the length of the WIFI signal detector is less than or equal to a preset length, wherein the microcontroller 10 is used to detect the network name of the target WIFI and the signal strength of the target WIFI, and a lightweight graphics library embedded system runs on the microcontroller 10, and the lightweight graphics library embedded system is used to display the network name and signal strength of the target WIFI detected by the microcontroller 10 in a user interface; the charging integrated circuit 20 is used to charge the battery 40; the step-down circuit 30 is used to convert the first voltage signal output by the battery 40 into a second voltage signal, and transmit the second voltage signal to the microcontroller 10 to power the microcontroller 10, and the second voltage signal is less than the first voltage signal.

[0035] The above-mentioned WIFI signal detector of the present application includes a WIFI signal detection circuit, and the WIFI signal detection circuit includes an electrically connected microcontroller, a charging integrated circuit, a step-down circuit and a battery. The length of the WIFI signal detector is less than or equal to a preset length, wherein the microcontroller is used to detect the network name of the target WIFI and the signal strength of the target WIFI, and a lightweight graphics library embedded system is run on the microcontroller, and the lightweight graphics library embedded system is used to display the network name and signal strength of the target WIFI detected by the microcontroller in the user interface; the charging integrated circuit is used to charge the battery; the step-down circuit is used to convert the first voltage signal output by the battery into a second voltage signal, and transmit the second voltage signal to the microcontroller to power the microcontroller, and the second voltage signal is less than the first voltage signal. The detector first uses a microcontroller to read WIFI information (WIFI name, signal strength, etc.), and then uses a lightweight graphics library embedded system to output the WIFI information to the screen, which is not only more compact and convenient to carry, but also has an interactive interface that is easy to read and more power-saving, which solves the problem that the WIFI signal detector in the prior art is too heavy, not easy to carry, and does not support some WIFI frequency bands.

[0036] Among them, the microcontroller uses the ESP32-C5 chip, whose operating voltage is 3.3V, that is, the second voltage signal is generally 3.3V. Use ESP32 to detect the WIFI signal strength. ESP32-C5 is a popular low-cost, low-power microcontroller that is often used in Internet of Things (IoT) projects. Using ESP32 to detect the Wi-Fi signal strength is a relatively simple process. After scanning Wi-Fi and Bluetooth, ESP32 displays the signal strength of the Wi-Fi network and the WIFI, and displays the data on the screen. At the same time, an external antenna can be connected to enhance the detection range and accuracy. ESP32 can detect the SSID and RSSI value of each network. The RSSI value is a negative number, and the smaller its absolute value, the stronger the signal strength. For example, -30dBm is generally considered a very strong signal, while -90dBm is a very weak signal.

[0037] The battery generally uses a lithium battery with a specification of 3.6V to 4.2V. Since the voltage provided by the lithium battery is generally high, a step-down circuit is required to reduce the first voltage signal provided by the lithium battery to a second voltage signal that meets the working conditions of the microcontroller. Generally, the first voltage signal is 5V.

[0038] Among them, the lightweight graphics library embedded system is the LVGL embedded system. Use LVGL to set up the user management system, view the WIFI signal strength, and conveniently view information. In the user interface, the WIFI signal viewing option will be set to view it at any time. At the same time, when the power is insufficient, a warning interface will pop up. LVGL is an open source graphics library designed specifically for embedded systems and is suitable for devices with small memory usage and low processing power. ESP32 combined with LVGL can create applications with a graphical user interface (GUI). The scanned information of ESP32 can be output to the screen, and the user interface can be set to facilitate on-site personnel to operate and view WIFi information.

[0039] In some instances, such as Figure 2As shown, the charging integrated circuit includes: a charging IC chip 21 having multiple ports; a charging display module 22, a first end of the charging display module 22 is electrically connected to the chip enable port CE of the charging IC chip 21, a second end of the charging display module 22 is electrically connected to the charging port CHRG of the charging IC chip 21, a third end of the electric display module is electrically connected to the active low power mode port STDBY of the charging IC chip 21, and a fourth end of the charging display module 22 is electrically connected to the first power supply terminal; a first voltage stabilizing module 23, a first end of the first voltage stabilizing module 23 is electrically connected to the power input port VCC of the charging IC chip 21, and the first end of the first voltage stabilizing module 23 is electrically connected to the power input port VCC of the charging IC chip 21. A second end of a voltage stabilizing module 23 is electrically connected to the first power supply end, and a third end of the first voltage stabilizing module 23 is grounded; a second voltage stabilizing module 24, a first end of the second voltage stabilizing module 24 is electrically connected to the temperature sensor port TEMP of the charging IC chip 21, a second end of the second voltage stabilizing module 24 is electrically connected to the battery port BAT of the charging IC chip 21, and a third end of the second voltage stabilizing module 24 is grounded; a programming resistor Rprog, a first end of the programming resistor Rprog is electrically connected to the programming port PROG of the charging IC chip 21, a second end of the programming resistor Rprog is grounded and electrically connected to the ground port of the charging IC chip 21.

[0040] Among them, Rprog is a programming resistor used to adjust the current or voltage in the circuit, usually used to program or calibrate electronic equipment. It can control the current or voltage in the circuit by changing its resistance value, thereby achieving control and regulation of electronic equipment. Rprog is usually used in digital circuits, analog circuits and communication systems.

[0041] like Figure 2 As shown, the charging IC chip used in this example is ME4057. ME4057 is used to manage the charging of lithium batteries and does not need to be plugged in. ME4057 is designed for lithium-ion or lithium-polymer battery charging applications. The ME4057 chip has high charging efficiency and less energy loss during battery charging. ME4057 has an energy-saving mode that can reduce power consumption when the battery is fully charged or not connected. Built-in multiple safety protection measures, such as short-circuit protection, over-temperature protection, overcharge protection, etc., ensure that the charging process is safe and reliable. The ME4057 size package helps to use it in space-constrained applications.

[0042] In some instances, such as Figure 3As shown, the charging display module 22 includes: a first resistor module R1, a first end of the first resistor module R1 is electrically connected to the charging port of the charging IC chip 21; a second resistor module R2, a first end of the second resistor module R2 is electrically connected to the active low power mode port of the charging IC chip 21; a first LED 221, a first end of the first LED 221 is electrically connected to the second end of the first resistor module R1, and a second end of the first LED 221 is electrically connected to the chip enable port of the charging IC chip 21 and the first power supply terminal respectively; a second LED 222, a first end of the second LED 222 is electrically connected to the second end of the second resistor module R2, and a second end of the second LED 222 is electrically connected to the first power supply terminal.

[0043] The first resistor module R1 may be composed of a 510Ω resistor, the second resistor module R2 may be composed of a 510Ω resistor, the first LED is a red LED, the second LED is a green LED, and the first LED and the second LED are used to indicate the battery power of the WIFI signal detector. For example, when the battery is full, the GREEled (green light) becomes always on, and when the battery is low, the REDled (red light) becomes flashing. At the same time, the signal can be transmitted to ESP32 to display the information on the screen.

[0044] In some instances, such as Figure 3 As shown, the first voltage stabilizing module 23 includes: a third resistor module R3, a first end of the third resistor module R3 is electrically connected to the power input port of the charging IC chip 21; a fourth resistor module R4, a first end of the fourth resistor module R4 is electrically connected to the second end of the third resistor module R3, and the second end of the fourth resistor module R4 is grounded; a fifth resistor module R5, a first end of the fifth resistor module R5 is electrically connected to the power input port of the charging IC chip 21, and a second end of the fifth resistor module R5 is electrically connected to the first power end; a first capacitor C1, a first electrode of the first capacitor C1 is electrically connected to the power input port of the charging IC chip 21, and a second electrode of the first capacitor C1 is grounded.

[0045] The fifth resistor module may be composed of a 0.25Ω resistor, and the first capacitor C1 is 10μF.

[0046] In some instances, such as Figure 3As shown, the second voltage stabilizing module 24 includes: a temperature-sensitive element 241, a first end of the temperature-sensitive element 241 is electrically connected to the temperature sensor port of the charging IC chip 21, a second end of the temperature-sensitive element 241 is electrically connected to the battery port of the charging IC chip 21, and a third end of the temperature-sensitive element 241 is grounded; a second capacitor C2, a first electrode of the second capacitor C2 is electrically connected to the battery port of the charging IC chip 21, and a second electrode of the second capacitor C2 is grounded.

[0047] Among them, the temperature sensitive element is NTC, which is the abbreviation of negative temperature coefficient thermistor, a temperature sensitive component. NTC thermistor has the characteristic that the resistance value decreases as the temperature increases, so it is widely used in temperature measurement, temperature compensation, temperature control and other fields. The resistance value of NTC thermistor changes with the temperature, which can be used to measure the ambient temperature and convert it into an electrical signal. The second capacitor is 10μF.

[0048] The first resistor module, the second resistor module, the third resistor module, the fourth resistor module, and the fifth resistor module can all be composed of one or more resistors connected in series or in parallel, and the voltage can be stabilized by the cooperation of multiple resistor modules, so that the voltage is stabilized at about 5 V. The voltage of the first power supply terminal is 5 V.

[0049] In some instances, such as Figure 4 As shown, the step-down circuit includes: a step-down chip 31, a third capacitor C3, a first electrode of the third capacitor C3 is electrically connected to the input end and the second power supply end of the step-down chip 31, respectively, and a second electrode of the third capacitor C3 is electrically connected to the ground end of the step-down chip 31; a fourth capacitor C4, the fourth capacitor C4 is connected in parallel with the third capacitor C3; a fifth capacitor C5, a first electrode of the fifth capacitor C5 is electrically connected to the output end and the second power supply end of the step-down chip 31, respectively, and a second electrode of the fifth capacitor C5 is electrically connected to the ground end of the step-down chip 31; a sixth capacitor C6, the sixth capacitor C6 is connected in parallel with the fifth capacitor C5.

[0050] The step-down chip generally uses the AMS1117 chip. Since the operating voltage of ESP32-C5 is relatively low, generally around 3.3V, and the voltage provided by the battery is relatively high, generally around 5V, it is necessary to control the voltage to 3.3V through a step-down module to power ESP32-C5. The voltage of the first power supply terminal is 5V, and the voltage of the second power supply terminal is 3.3V.

[0051] In some instances, such as Figure 5As shown, the WIFI signal detection circuit further includes an electrically connected voltage stabilizing unit 50 and a battery protection module 60, wherein the voltage stabilizing unit 50 is electrically connected to the microcontroller 10, and the voltage stabilizing unit 50 is used to stabilize the voltage in the WIFI signal detection circuit, and the battery protection module 60 is electrically connected to the battery 40, and the battery protection module 60 includes a target MOS tube Q, wherein when the circuit current of the WIFI signal detection circuit is greater than a preset value, the target MOS tube Q is disconnected.

[0052] Among them, the voltage stabilizing unit is a voltage stabilizing LDO, which is a low dropout voltage regulator, and its full name is Low Dropout Linear Regulator, which is an electronic component used to stabilize the input voltage and provide a stable output voltage. It achieves stable control of the output voltage by controlling the difference between the input voltage and the output voltage. The voltage stabilizing LDO has the characteristics of high precision, low power consumption and small size, and is widely used in various electronic devices. The voltage stabilizing LDO can be used to stabilize the voltage in the WIFI signal detector, and in this example, the voltage stabilizing LDO can use SC662K.

[0053] The battery protection module is a lithium battery protection IC, which is used to protect the lithium battery from damage in the event of a circuit short circuit or other faults. In this example, the battery protection module can use any one of the DW03D chip, DW06D chip or DW01K chip to perform battery protection.

[0054] DW03D is a circuit chip for lithium battery protection. Its main function is to monitor the voltage, temperature and current of the battery, and to perform protection control when the battery is overcharged, over-discharged, short-circuited or in other abnormal conditions. DW03D can effectively protect lithium batteries from damage such as overcharge, over-discharge and short-circuit, ensuring that the battery works safely and reliably. DW03D is usually used in power tools, electric vehicles, drones and other equipment that require lithium batteries.

[0055] DW06D is a protection circuit specifically for lithium batteries. It can monitor the battery voltage, temperature and current to ensure that the battery is in a safe state during charging and discharging. DW06D also has functions such as overvoltage protection, undervoltage protection, overcurrent protection and short circuit protection, which can effectively prevent the battery from being damaged due to overcharging, overdischarging or other abnormal conditions. This protection circuit is often used in various portable electronic products and power tools to ensure the safety and stability of the battery.

[0056] DW01K is an integrated circuit for lithium battery protection. It can provide overcharge, over-discharge, overcurrent and short circuit protection. DW01K is usually used in lithium battery packs to monitor the voltage and current of the battery. Once an abnormal situation is detected, such as the battery voltage is too high or too low, the current is too large, etc., DW01K will automatically cut off the connection between the battery and the external circuit to protect the battery from damage. DW01K also has the characteristics of low power consumption and high reliability, and is widely used in various portable electronic devices, such as mobile phones, tablets, laptops, etc.

[0057] The target MOS tube in the battery protection module is used to disconnect when a short circuit occurs in the circuit, resulting in excessive current in the circuit, thereby protecting the battery. In this embodiment, the target MOS tube uses an SC8205 transistor. The SC8205 transistor is a bipolar transistor, which is commonly used in low-frequency power amplifier circuits and switching circuits. It has the characteristics of high-frequency bandwidth, low noise and low distortion, and is widely used in various electronic devices. The SC8205 transistor usually has three pins, namely the emitter, base and collector.

[0058] In some instances, such as Figure 6 As shown, the WIFI signal detector further includes: an indicator light 70, the indicator light 70 is electrically connected to the microcontroller 10, and the indicator light 70 is used to display different colors and / or brightness according to the command signal when receiving the command signal sent by the microcontroller 10; a display device 80, the display device 80 is electrically connected to the microcontroller 10, and the display device 80 is used to display the network name and signal strength of the target WIFI.

[0059] Among them, the indicator light 70 is used to indicate the signal strength of the target WIFI. For example, when the signal strength of the target WIFI is greater than or equal to the first preset value, the indicator light 70 is always on, and when the signal strength of the target WIFI is less than the first preset value, the indicator light 70 flashes. The display device can be a display screen. Based on the LVGL embedded system, the user can view the WIFI signal strength according to the display screen, which is convenient for viewing information. In the user interface, a WIFI signal viewing option will be set for viewing at any time. At the same time, when the battery is low, a warning interface will pop up.

[0060] like Figure 6 As shown, the WIFI signal detector further includes a button 90 , and the user determines to start executing WIFI signal detection by performing a preset operation on the button 90 .

[0061] In some embodiments, the WIFI signal detector further includes a data interface. The specific structure diagram of the data interface is as follows: Figure 7As shown, the data interface uses the CH340G serial port chip, where D+ and D- are connected to the USB end of the WIFI signal detector, and RXD and TXD are connected to the microcontroller. CH340G is a commonly used USB to serial port chip that can convert the USB interface into a serial port interface for connecting the computer to other serial port devices. This chip is often used on development boards such as Arduino for data transmission and communication with computers.

[0062] In the above example, ESP32-C5 is used as the core, and peripheral circuits such as charging IC and lithium battery protection are used for PCB design. The detector of this design is only about 5cm long. The operating temperature is between -40 degrees and 105 degrees, which can better adapt to industrial environments. The detector first uses ESP32-C5 to read WIFI information (WIFI name, signal strength, etc.), and then uses the LVGL embedded system to produce a set of WIFI signal detection system, which is output to the screen for better observation. At the same time, the power charging IC: ME4057 is used to charge the lithium battery. The whole set of the detector is only 5 cm in length, which can be better carried. Use the LVGL embedded system to design the interactive interface, and use the screen and other peripherals for signal feedback to improve the user experience.

[0063] It should be noted that the steps shown in the flowcharts of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and that, although a logical order is shown in the flowcharts, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0064] In this embodiment, a method for detecting a WIFI signal is provided. The method is applied to a microcontroller of a WIFI signal detection circuit in any of the above-mentioned WIFI signal detectors, such as Figure 8 As shown, the above method includes:

[0065] Step S101, detecting the network name of the target WIFI and the signal strength of the target WIFI;

[0066] Among them, the above-mentioned WIFI signal detector can detect WIFI6 and WIFI signals with a frequency band of 5GHz.

[0067] Step S102: using a lightweight graphics library embedded system to display the network name of the target WIFI and the signal strength of the target WIFI on a user interface.

[0068] Among them, ESP32 is used to detect the WIFI signal strength. ESP32-C5 is a popular low-cost, low-power microcontroller, often used in Internet of Things (IoT) projects. Using ESP32 to detect Wi-Fi signal strength is a relatively simple process. After ESP32 scans Wi-Fi and Bluetooth, it displays the Wi-Fi network and the signal strength of the WIFI, and displays the data on the screen. At the same time, an external antenna can be connected to enhance the detection range and accuracy.

[0069] The above-mentioned WIFI signal detection method of the present application is applied to a microcontroller of a WIFI signal detection circuit in any WIFI signal detector. The method first detects the network name of the target WIFI and the signal strength of the target WIFI; then a lightweight graphics library embedded system is used to display the network name of the target WIFI and the signal strength of the target WIFI on the user interface. The method first uses a microcontroller to read WIFI information (WIFI name, signal strength, etc.), and then uses a lightweight graphics library embedded system to output the WIFI information to the screen. Not only is the volume more compact and convenient to carry, but the interactive interface is designed to be easy to read and more power-saving, which solves the problem that the WIFI signal detector in the prior art is too heavy, not easy to carry, and does not support some WIFI frequency bands.

[0070] In some examples, detecting the signal strength of the target WIFI includes the following steps:

[0071] Step S1011, obtaining the RSSI value of the target WIFI;

[0072] Step S1012: determining the signal strength of the target WIFI according to the RSSI value of the target WIFI, wherein the absolute value of the RSSI value of the target WIFI is inversely proportional to the signal strength of the target WIFI.

[0073] Specifically, SP32 can detect the SSID and RSSI value of each network. The RSSI value is a negative number. The smaller its absolute value, the stronger the signal strength. For example, -30dBm is generally considered a very strong signal, while -90dBm is a very weak signal. This can accurately determine the signal strength of the target WIFI.

[0074] By using the above WIFI signal detector and WIFI signal detection method, the on-site personnel turn on the switch of the WIFI signal detector, find the strongest signal point of the required WIFI on site, and deploy the machine that needs to connect to the WIFI at this point. The detector can also be used to detect the on-site WIFI coverage range to determine the range of movement of the deployed machine.

[0075] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0076] From the above description, it can be seen that the above embodiments of the present application achieve the following technical effects:

[0077] 1) The above-mentioned WIFI signal detector of the present application includes a WIFI signal detection circuit, which includes an electrically connected microcontroller, a charging integrated circuit, a step-down circuit and a battery. The length of the WIFI signal detector is less than or equal to a preset length, wherein the microcontroller is used to detect the network name of the target WIFI and the signal strength of the target WIFI, and a lightweight graphics library embedded system is run on the microcontroller, and the lightweight graphics library embedded system is used to display the network name and signal strength of the target WIFI detected by the microcontroller in the user interface; the charging integrated circuit is used to charge the battery; the step-down circuit is used to convert the first voltage signal output by the battery into a second voltage signal, and transmit the second voltage signal to the microcontroller to power the microcontroller, and the second voltage signal is less than the first voltage signal. The detector first uses a microcontroller to read WIFI information (WIFI name, signal strength, etc.), and then uses a lightweight graphics library embedded system to output the WIFI information to the screen. It is not only more compact and easy to carry, but also has an interactive interface that is easy to read and more power-saving, which solves the problem that the WIFI signal detector in the prior art is too heavy, not easy to carry, and does not support some WIFI frequency bands.

[0078] 2) The above-mentioned WIFI signal detection method of the present application is applied to the microcontroller of the WIFI signal detection circuit in any WIFI signal detector. The method first detects the network name of the target WIFI and the signal strength of the target WIFI; then a lightweight graphics library embedded system is used to display the network name of the target WIFI and the signal strength of the target WIFI on the user interface. The method first uses a microcontroller to read the WIFI information (WIFI name, signal strength, etc.), and then uses a lightweight graphics library embedded system to output the WIFI information to the screen. It is not only more compact and easy to carry, but also has an interactive interface that is easy to read and more power-saving. It solves the problem that the WIFI signal detector in the prior art is too heavy, not easy to carry, and does not support some WIFI frequency bands.

[0079] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A WIFI signal detector, characterized in that: It includes a WIFI signal detection circuit, which includes an electrically connected microcontroller, a charging integrated circuit, a step-down circuit and a battery. The length of the WIFI signal detector is less than or equal to a preset length, wherein: The microcontroller is used to detect the network name of the target WIFI and the signal strength of the target WIFI. A lightweight graphics library embedded system runs on the microcontroller, and the lightweight graphics library embedded system is used to display the network name and signal strength of the target WIFI detected by the microcontroller in a user interface; The charging integrated circuit is used to charge the battery; The step-down circuit is used to convert a first voltage signal output by the battery into a second voltage signal, and transmit the second voltage signal to the microcontroller to power the microcontroller, and the second voltage signal is lower than the first voltage signal.

2. The WIFI signal detector according to claim 1, characterized in that: The charging integrated circuit comprises: Charging IC chip with multiple ports; a charging display module, wherein a first end of the charging display module is electrically connected to a chip enable port of the charging IC chip, a second end of the charging display module is electrically connected to a charging port of the charging IC chip, a third end of the charging display module is electrically connected to an active low power mode port of the charging IC chip, and a fourth end of the charging display module is electrically connected to a first power supply terminal; a first voltage stabilizing module, wherein a first end of the first voltage stabilizing module is electrically connected to a power input port of the charging IC chip, a second end of the first voltage stabilizing module is electrically connected to the first power end, and a third end of the first voltage stabilizing module is grounded; a second voltage stabilizing module, wherein a first end of the second voltage stabilizing module is electrically connected to a temperature sensor port of the charging IC chip, a second end of the second voltage stabilizing module is electrically connected to a battery port of the charging IC chip, and a third end of the second voltage stabilizing module is grounded; A programming resistor, wherein a first end of the programming resistor is electrically connected to a programming port of the charging IC chip, and a second end of the programming resistor is grounded and electrically connected to a ground port of the charging IC chip.

3. The WIFI signal detector according to claim 2, characterized in that: The charging display module comprises: a first resistor module, wherein a first end of the first resistor module is electrically connected to a charging port of the charging IC chip; a second resistance module, wherein a first end of the second resistance module is electrically connected to the active low power consumption mode port of the charging IC chip; a first LED, wherein a first end of the first LED is electrically connected to a second end of the first resistor module, and a second end of the first LED is electrically connected to a chip enable port of the charging IC chip and the first power supply end respectively; A second LED, wherein a first end of the second LED is electrically connected to a second end of the second resistor module, and a second end of the second LED is electrically connected to the first power supply end.

4. The WIFI signal detector according to claim 2, characterized in that: The first voltage stabilizing module comprises: a third resistor module, wherein a first end of the third resistor module is electrically connected to a power input port of the charging IC chip; a fourth resistor module, wherein a first end of the fourth resistor module is electrically connected to a second end of the third resistor module, and a second end of the fourth resistor module is grounded; a fifth resistance module, wherein a first end of the fifth resistance module is electrically connected to the power input port of the charging IC chip, and a second end of the fifth resistance module is electrically connected to the first power supply end; A first capacitor, wherein a first electrode of the first capacitor is electrically connected to a power input port of the charging IC chip, and a second electrode of the first capacitor is grounded.

5. The WIFI signal detector according to claim 2, characterized in that: The second voltage stabilizing module comprises: a temperature-sensitive element, wherein a first end of the temperature-sensitive element is electrically connected to a temperature sensor port of the charging IC chip, a second end of the temperature-sensitive element is electrically connected to a battery port of the charging IC chip, and a third end of the temperature-sensitive element is grounded; A second capacitor, wherein a first electrode of the second capacitor is electrically connected to the battery port of the charging IC chip, and a second electrode of the second capacitor is grounded.

6. The WIFI signal detector according to claim 1, characterized in that: The step-down circuit comprises: Step-down chip, a third capacitor, wherein a first electrode of the third capacitor is electrically connected to the input terminal and the second power supply terminal of the buck chip respectively, and a second electrode of the third capacitor is electrically connected to the ground terminal of the buck chip; a fourth capacitor, the fourth capacitor being connected in parallel with the third capacitor; a fifth capacitor, wherein a first electrode of the fifth capacitor is electrically connected to the output terminal of the buck chip and the second power supply terminal respectively, and a second electrode of the fifth capacitor is electrically connected to the ground terminal of the buck chip; A sixth capacitor is connected in parallel with the fifth capacitor.

7. The WIFI signal detector according to claim 1, characterized in that: The WIFI signal detection circuit also includes an electrically connected voltage stabilizing unit and a battery protection module, wherein the voltage stabilizing unit is electrically connected to the microcontroller, and the voltage stabilizing unit is used to stabilize the voltage in the WIFI signal detection circuit, and the battery protection module is electrically connected to the battery, and the battery protection module includes a target MOS tube, wherein when the circuit current of the WIFI signal detection circuit is greater than a preset value, the target MOS tube is disconnected.

8. The WIFI signal detector according to claim 1, characterized in that: The WIFI signal detector also includes: An indicator light, the indicator light being electrically connected to the microcontroller, and the indicator light being used to display different colors and / or brightness according to the command signal when receiving a command signal sent by the microcontroller; A display device is electrically connected to the microcontroller, and is used to display the network name and signal strength of the target WIFI.

9. A method for detecting a WIFI signal, characterized in that: The method is applied to a microcontroller of a WIFI signal detection circuit in a WIFI signal detector according to any one of claims 1 to 8, and the method comprises: Detect the network name of the target WIFI and the signal strength of the target WIFI; A lightweight graphics library embedded system is used to display the network name of the target WIFI and the signal strength of the target WIFI on the user interface.

10. The method according to claim 9, characterized in that Detecting the signal strength of the target WIFI includes: Get the RSSI value of the target WIFI; The signal strength of the target WIFI is determined according to the RSSI value of the target WIFI, wherein the absolute value of the RSSI value of the target WIFI is in inverse proportion to the signal strength of the target WIFI.

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