Anti-lost device based on WIFI communication

Abstract

The utility model provides an anti-lost device based on wireless fidelity (WIFI) communication. The anti-lost device comprises a control unit and an antenna unit, the control unit comprises a control circuit, a power supply circuit and a downloading serial port circuit; the power supply end of the control circuit is connected with the power supply circuit, and the UART interface of the control circuit is connected with the downloading serial port circuit; the antenna unit comprises a global positioning system (GPS) antenna module and a WIFI antenna module, the GPS antenna module is connected with the first communication interface of the control circuit, and the WIFI antenna module is connected with the second communication interface of the control circuit. According to the scheme provided by the invention, the reliability of the anti-lost device can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of smart devices, and in particular to an anti-lost device based on Wireless Fidelity (WIFI) communication. Background Art

[0002] With social changes and the accelerated pace of life, the safety of the elderly and children has received more and more attention. People in modern society are often busy with work and other activities, especially the "head-down tribe" who are extremely dependent on mobile phones. It is difficult to keep an eye on the elderly and children at all times. When the elderly and children are out of sight, it is difficult to be discovered in time, which poses a great safety hazard. In the prior art, in order to monitor the movement trajectories of the elderly and children, an anti-lost device is introduced; the anti-lost device can help the guardian pay attention to the movement range of the ward at any time, thereby reducing the risk of getting lost. The existing anti-lost device can use the global positioning system (GPS), Bluetooth communication technology, etc. to achieve positioning, but with the increase of urban buildings, many areas will have signal interference and poor signal problems, resulting in the problem of no GPS signal and Bluetooth signal, so that the ward's anti-lost device cannot complete the positioning operation, affecting the reliability of the anti-lost device. Summary of the invention

[0003] The present application provides an anti-lost device based on WIFI communication, which can improve the reliability of the anti-lost device.

[0004] The first embodiment of the present application proposes an anti-lost device based on WIFI communication, the device comprising a control unit 101 and an antenna unit; wherein:

[0005] The control unit 101 includes a control circuit, a power supply circuit and a download serial port circuit; the power supply end of the control circuit is connected to the power supply circuit, and the UART interface of the control circuit is connected to the download serial port circuit;

[0006] The antenna unit comprises a GPS antenna module and a WIFI antenna module, the GPS antenna module is connected to a first communication interface of the control circuit, and the WIFI antenna module is connected to a second communication interface of the control circuit.

[0007] In the above solution, the control circuit includes a control chip, and the control chip model is ESP32.

[0008] In the above solution, the power supply circuit includes a battery B2 and a voltage stabilizing circuit, and the battery B2 supplies power to the control chip through the voltage stabilizing circuit; wherein,

[0009] The voltage stabilizing circuit includes an inductor L2, a voltage stabilizing chip U4, a voltage stabilizing diode D2 and a capacitor C4; the positive electrode of the battery B2 is grounded, and the negative electrode of the battery B2 is connected to the first end of the inductor L2; the second end of the inductor L2 is respectively connected to the anode of the voltage stabilizing diode D2 and the Lx interface of the voltage stabilizing chip U4, the cathode of the voltage stabilizing diode D2 is respectively connected to the Vout interface of the voltage stabilizing chip U4 and the 3V3 interface of the control chip, the Vss interface of the voltage stabilizing chip U4 is connected to the first end of the capacitor C4, the first end of the capacitor C4 is grounded, and the second end of the capacitor C4 is connected to the 3V3 interface of the control chip.

[0010] In the above solution, the model of the voltage regulator chip U4 is ME2108A.

[0011] In the above scheme, the download serial port circuit includes a pin header H2, which is used to connect an external terminal device; pin 1 of the pin header H2 is grounded, pin 4 of the pin header H2 is connected to a 3.3V power supply, pin 2 of the pin header H2 is connected to the RXD0 interface of the control chip, and pin 3 of the pin header H2 is connected to TXD0 of the control chip.

[0012] In the above scheme, the control unit 101 also includes a button reset circuit; the button reset circuit includes a reset button EN and a capacitor C6; wherein, pin 1 of the reset button EN is grounded, and pin 2 of the reset button EN is connected to the EN reset pin of the control chip; the first end of the capacitor C6 is grounded, and the second end of the capacitor C6 is connected to the EN reset pin of the control chip.

[0013] In the above solution, the control unit 101 further includes a key input circuit; the key input circuit includes a key KEY1, a key KEY2, a start key BOOT and a capacitor C5; wherein,

[0014] Pin 1 of the key KEY1 is connected to a 3.3V power supply, and pin 2 of the key KEY1 is connected to the first IO interface of the control chip; pin 1 of the key KEY2 is connected to a 3.3V power supply, and pin 2 of the key KEY2 is connected to the second IO interface of the control chip; pin 1 of the start button BOOT is connected to the third IO interface of the control chip, and pin 2 of the start button BOOT is grounded; the first end of the capacitor C5 is connected to the fourth IO interface of the control chip, and the second end of the capacitor C5 is grounded.

[0015] In the above scheme, the control unit 101 also includes an LED circuit; the LED circuit includes LED1, LED2, resistor R1 and resistor R2; the anode of the LED1 is connected to a 3.3V power supply, and the cathode of the LED2 is connected to the fifth IO interface of the control chip through the resistor R1; the anode of the LED2 is connected to a 3.3V power supply, and the cathode of the LED2 is connected to the sixth IO interface of the control chip through the resistor R2.

[0016] In the above solution, the LED1 and the LED2 are light-sensitive LEDs.

[0017] In the above scheme, the control unit 101 also includes an alarm circuit; the alarm circuit includes a buzzer BUZZER1, a transistor Q1 and a resistor R3; the negative pole of the buzzer BUZZER1 is grounded, the positive pole of the buzzer BUZZER1 is connected to the emitter of the transistor Q1, the collector of the transistor Q1 is connected to a 3.3V power supply, and the base of the transistor Q1 is connected to the seventh IO interface of the control chip through the resistor R3.

[0018] In summary, the technical solution provided in the embodiment of the present application introduces a WIFI antenna module so that it includes a GPS antenna module and a WIFI module at the same time, and by connecting the two antenna modules to the control circuit respectively, the control circuit can select one of the antenna modules to perform anti-lost operations such as positioning and communication, thereby improving the reliability of the anti-lost device.

[0019] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present application, and together with the specification are used to explain the principles of the present application, and do not constitute an improper limitation on the present application.

[0021] Figure 1a A schematic diagram of the structure of the first anti-lost device based on WIFI communication provided in an embodiment of the present application;

[0022] Figure 1b A schematic diagram of the structure of a control unit in a second anti-lost device based on WIFI communication provided in an embodiment of the present application;

[0023] Figure 1c A schematic diagram of the structure of a control unit in a third anti-lost device based on WIFI communication provided in an embodiment of the present application;

[0024] Figure 1dA schematic diagram of the structure of a control unit in a fourth anti-lost device based on WIFI communication provided in an embodiment of the present application;

[0025] Figure 1e A schematic diagram of the structure of a control unit in a fifth anti-lost device based on WIFI communication provided in an embodiment of the present application;

[0026] Figure 1f A schematic diagram of the structure of a control unit in a sixth anti-lost device based on WIFI communication provided in an embodiment of the present application;

[0027] Figure 1 A schematic diagram of the structure of a seventh anti-lost device based on WIFI communication provided in an embodiment of the present application;

[0028] Figure 2 for Figure 1 Circuit diagram of the anti-lost device based on WIFI communication. DETAILED DESCRIPTION

[0029] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0030] The present application embodiment provides an anti-lost device based on WIFI communication, such as Figure 1a As shown, the device may include a control unit 101 and an antenna unit 102; wherein,

[0031] The control unit 101 includes a control circuit 103, a power supply circuit 104 and a download serial port circuit 105; the power supply end of the control circuit 103 is connected to the power supply circuit 104, and the UART interface of the control circuit 103 is connected to the download serial port circuit 105;

[0032] The antenna unit 102 includes a GPS antenna module 106 and a WIFI antenna module 107 . The GPS antenna module 106 is connected to a first communication interface of the control circuit 103 , and the WIFI antenna module 107 is connected to a second communication interface of the control circuit 103 .

[0033] In actual application, the control circuit 103 switches between the first communication interface and the second communication interface to realize the switching of the GPS antenna module 106 and the WIFI antenna module 107, so that in an environment where the GPS signal is poor, the WIFI antenna module 107 can be used to connect to the WIFI network covered in the current area, so that the WIFI signal can be used for positioning, communication and other operations, thereby improving the reliability and practicality of the anti-loss device.

[0034] In one embodiment, the control circuit 103 may include a control chip 108 , and the model of the control chip 108 may be ESP32; illustratively, the model of the control chip 108 is ESP32-WROOM-32E.

[0035] In order to ensure stable power supply, a voltage stabilizing circuit may be provided between the power supply and the control circuit 103 .

[0036] Based on this, in one embodiment, if Figure 1b As shown, the power supply circuit 104 may include a battery B2 and a voltage stabilizing circuit 109, and the battery B2 supplies power to the control chip 108 through the voltage stabilizing circuit 109; wherein,

[0037] The voltage stabilizing circuit 109 may include an inductor L2, a voltage stabilizing chip U4, a voltage stabilizing diode D2 and a capacitor C4; the positive electrode of the battery B2 is grounded, and the negative electrode of the battery B2 is connected to the first end of the inductor L2; the second end of the inductor L2 is respectively connected to the anode of the voltage stabilizing diode D2 and the Lx interface of the voltage stabilizing chip U4, the cathode of the voltage stabilizing diode D2 is respectively connected to the Vout interface of the voltage stabilizing chip U4 and the 3V3 interface of the control chip 108, the Vss interface of the voltage stabilizing chip U4 is connected to the first end of the capacitor C4, the first end of the capacitor C4 is grounded, and the second end of the capacitor C4 is connected to the 3V3 interface of the control chip 108.

[0038] In one embodiment, the model of the voltage regulator chip U4 may be ME2108A; illustratively, the model of the voltage regulator chip U4 is ME2108A33PG.

[0039] In one embodiment, the download serial port circuit 105 may include a pin header H2, which is used to connect to an external terminal device; pin 1 of the pin header H2 is grounded, pin 4 of the pin header H2 is connected to a 3.3V power supply, pin 2 of the pin header H2 is connected to the RXD0 interface of the control chip 108, and pin 3 of the pin header H2 is connected to TXD0 of the control chip 108.

[0040] In actual application, the download serial port circuit 105 can be used for the anti-lost device to perform software updates and information updates, thereby ensuring the stable operation of the anti-lost device and further improving the reliability and safety of the device.

[0041] In actual application, in order to facilitate the reset operation when an abnormal situation occurs, thereby improving the practicality of the device, a reset circuit can be provided in the device.

[0042] Based on this, in one embodiment, if Figure 1cAs shown, the control unit 101 may also include a button reset circuit 110; the button reset circuit 110 includes a reset button EN and a capacitor C6; wherein, pin 1 of the reset button EN is grounded, and pin 2 of the reset button EN is connected to the EN reset pin of the control chip 108; the first end of the capacitor C6 is grounded, and the second end of the capacitor C6 is connected to the EN reset pin of the control chip 108.

[0043] In actual application, in order to facilitate input operation, the device can also be provided with an input circuit with keys.

[0044] Based on this, in one embodiment, if Figure 1d As shown, the control unit 101 further includes a key input circuit 111; the key input circuit 111 includes a key KEY1, a key KEY2, a start key BOOT and a capacitor C5; wherein,

[0045] Pin 1 of the key KEY1 is connected to a 3.3V power supply, and pin 2 of the key KEY1 is connected to the first IO interface of the control chip 108; pin 1 of the key KEY2 is connected to a 3.3V power supply, and pin 2 of the key KEY2 is connected to the second IO interface of the control chip 108; pin 1 of the start button BOOT is connected to the third IO interface of the control chip 108, and pin 2 of the start button BOOT is grounded; a first end of the capacitor C5 is connected to the fourth IO interface of the control chip 108, and a second end of the capacitor C5 is grounded.

[0046] In one embodiment, if Figure 1e As shown, the control unit 101 may also include an LED circuit 112; the LED circuit 112 includes LED1, LED2, resistor R1 and resistor R2; the anode of the LED1 is connected to a 3.3V power supply, and the cathode of the LED2 is connected to the fifth IO interface of the control chip 108 through the resistor R1; the anode of the LED2 is connected to a 3.3V power supply, and the cathode of the LED2 is connected to the sixth IO interface of the control chip 108 through the resistor R2.

[0047] In one embodiment, the LED1 and the LED2 may be light-sensitive LEDs; specifically, the model of the light-sensitive LED may be LED-0603_R.

[0048] In one embodiment, if Figure 1fAs shown, the control unit 101 may also include an alarm circuit 113; the alarm circuit 113 includes a buzzer BUZZER1, a transistor Q1 and a resistor R3; the cathode of the buzzer BUZZER1 is grounded, the anode of the buzzer BUZZER1 is connected to the emitter of the transistor Q1, the collector of the transistor Q1 is connected to a 3.3V power supply, and the base of the transistor Q1 is connected to the seventh IO interface of the control chip 108 via the resistor R3.

[0049] In actual application, when the control circuit 103 determines that the guardian wearing the device is at risk of getting lost based on positioning signals, for example, the guardian is outside the preset area, the time spent at a certain location does not meet the preset conditions, or the specific location of the guardian cannot be determined, the control circuit 103 can control the alarm circuit 113 to start, to provide a warning or prompt of the location, thereby further improving the practicality of the device.

[0050] The present application also provides an anti-lost device based on WIFI communication, such as Figure 1 and Figure 2 As shown, the device may include a control unit 101 and an antenna unit 102; wherein,

[0051] The control unit 101 includes a control chip 108, a power supply circuit 104 and a download serial port circuit 105; the power supply end of the control chip 108 is connected to the power supply circuit 104, and the UART interface of the control chip 108 is connected to the download serial port circuit 105;

[0052] The antenna unit 102 includes a GPS antenna module 106 and a WIFI antenna module 107, wherein the GPS antenna module 106 is connected to a first communication interface of the control chip 108, and the WIFI antenna module 107 is connected to a second communication interface of the control chip 108;

[0053] The power supply circuit 104 may include a battery B2 and a voltage stabilizing circuit 109, and the battery B2 supplies power to the control chip 108 through the voltage stabilizing circuit 109; wherein,

[0054] The voltage stabilizing circuit 109 may include an inductor L2, a voltage stabilizing chip U4, a voltage stabilizing diode D2 and a capacitor C4; the positive electrode of the battery B2 is grounded, and the negative electrode of the battery B2 is connected to the first end of the inductor L2; the second end of the inductor L2 is respectively connected to the anode of the voltage stabilizing diode D2 and the Lx interface of the voltage stabilizing chip U4, the cathode of the voltage stabilizing diode D2 is respectively connected to the Vout interface of the voltage stabilizing chip U4 and the 3V3 interface of the control chip 108, the Vss interface of the voltage stabilizing chip U4 is connected to the first end of the capacitor C4, the first end of the capacitor C4 is grounded, and the second end of the capacitor C4 is connected to the 3V3 interface of the control chip 108;

[0055] The model of the voltage stabilizing chip U4 may be ME2108A; illustratively, the model of the voltage stabilizing chip U4 is ME2108A33PG;

[0056] The download serial port circuit 105 may include a pin header H2, and the pin header H2 is used to connect to an external terminal device; pin 1 of the pin header H2 is grounded, pin 4 of the pin header H2 is connected to a 3.3V power supply, pin 2 of the pin header H2 is connected to the RXD0 interface of the control chip 108, and pin 3 of the pin header H2 is connected to the TXD0 of the control chip 108;

[0057] The control unit 101 may further include a key reset circuit 110; the key reset circuit 110 includes a reset key EN and a capacitor C6; wherein, pin 1 of the reset key EN is grounded, and pin 2 of the reset key EN is connected to the EN reset pin of the control chip 108; a first end of the capacitor C6 is grounded, and a second end of the capacitor C6 is connected to the EN reset pin of the control chip 108;

[0058] The control unit 101 further includes a key input circuit 111; the key input circuit 111 includes a key KEY1, a key KEY2, a start key BOOT and a capacitor C5; wherein,

[0059] Pin 1 of the key KEY1 is connected to a 3.3V power supply, and pin 2 of the key KEY1 is connected to a first IO interface of the control chip 108; pin 1 of the key KEY2 is connected to a 3.3V power supply, and pin 2 of the key KEY2 is connected to a second IO interface of the control chip 108; pin 1 of the start button BOOT is connected to a third IO interface of the control chip 108, and pin 2 of the start button BOOT is grounded; a first end of the capacitor C5 is connected to a fourth IO interface of the control chip 108, and a second end of the capacitor C5 is grounded;

[0060] The control unit 101 may further include an LED circuit 112; the LED circuit 112 includes an LED1, an LED2, a resistor R1 and a resistor R2; the anode of the LED1 is connected to a 3.3V power supply, and the cathode of the LED2 is connected to the fifth IO interface of the control chip 108 through the resistor R1; the anode of the LED2 is connected to a 3.3V power supply, and the cathode of the LED2 is connected to the sixth IO interface of the control chip 108 through the resistor R2;

[0061] The LED1 and the LED2 may be light-sensitive LEDs; specifically, the model of the light-sensitive LED may be LED-0603_R;

[0062] The control unit 101 may also include an alarm circuit 113; the alarm circuit 113 includes a buzzer BUZZER1, a transistor Q1 and a resistor R3; the cathode of the buzzer BUZZER1 is grounded, the anode of the buzzer BUZZER1 is connected to the emitter of the transistor Q1, the collector of the transistor Q1 is connected to a 3.3V power supply, and the base of the transistor Q1 is connected to the seventh IO interface of the control chip 108 via the resistor R3.

[0063] In summary, the anti-lost device based on WIFI communication provided in the embodiment of the present application introduces a WIFI antenna module so that it includes a GPS antenna module and a WIFI module at the same time, and by connecting the two antenna modules to the control circuit respectively, the control circuit can select one of the antenna modules to perform anti-lost operations such as positioning and communication, thereby improving the reliability of the anti-lost device.

[0064] It should be noted that: when the anti-lost device based on WIFI communication provided in the above embodiment performs anti-lost processing, only the division of the above-mentioned program modules is used as an example. In actual applications, the above-mentioned processing can be assigned to different program modules as needed, that is, the internal structure of the device is divided into different program modules to complete all or part of the processing described above.

[0065] It should be noted that: "first", "second", etc. are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0066] In addition, the technical solutions described in the embodiments of the present application can be combined arbitrarily without conflict.

[0067] The above description is only a preferred embodiment of the present application and is not intended to limit the protection scope of the present application.

Claims

1. Anti-lost device based on WIFI communication, characterized in that: The device comprises a control unit and an antenna unit; wherein, The control unit includes a control circuit, a power supply circuit and a download serial port circuit; the power supply end of the control circuit is connected to the power supply circuit, and the UART interface of the control circuit is connected to the download serial port circuit; the control circuit includes a control chip, and the control chip model is ESP32; The antenna unit includes a global positioning system GPS antenna module and a WIFI antenna module, the GPS antenna module is connected to the first communication interface of the control circuit, and the WIFI antenna module is connected to the second communication interface of the control circuit; The power supply circuit includes a battery B2 and a voltage stabilizing circuit, and the battery B2 supplies power to the control chip through the voltage stabilizing circuit; wherein, The voltage stabilizing circuit includes an inductor L2, a voltage stabilizing chip U4, a voltage stabilizing diode D2 and a capacitor C4; the positive electrode of the battery B2 is grounded, and the negative electrode of the battery B2 is connected to the first end of the inductor L2; the second end of the inductor L2 is respectively connected to the anode of the voltage stabilizing diode D2 and the Lx interface of the voltage stabilizing chip U4, the cathode of the voltage stabilizing diode D2 is respectively connected to the Vout interface of the voltage stabilizing chip U4 and the 3V3 interface of the control chip, the Vss interface of the voltage stabilizing chip U4 is connected to the first end of the capacitor C4, the first end of the capacitor C4 is grounded, and the second end of the capacitor C4 is connected to the 3V3 interface of the control chip.

2. The anti-lost device based on WIFI communication according to claim 1, characterized in that: The model of the voltage regulator chip U4 is ME2108A.

3. The anti-lost device based on WIFI communication according to claim 1, characterized in that: The download serial port circuit includes a pin header H2, which is used to connect an external terminal device; pin 1 of the pin header H2 is grounded, pin 4 of the pin header H2 is connected to a 3.3V power supply, pin 2 of the pin header H2 is connected to the RXD0 interface of the control chip, and pin 3 of the pin header H2 is connected to the TXD0 of the control chip.

4. The anti-lost device based on WIFI communication according to claim 1, characterized in that: The control unit also includes a button reset circuit; the button reset circuit includes a reset button EN and a capacitor C6; wherein, pin 1 of the reset button EN is grounded, and pin 2 of the reset button EN is connected to the EN reset pin of the control chip; the first end of the capacitor C6 is grounded, and the second end of the capacitor C6 is connected to the EN reset pin of the control chip.

5. The anti-lost device based on WIFI communication according to claim 4, characterized in that: The control unit also includes a key input circuit; the key input circuit includes a key KEY1, a key KEY2, a start key BOOT and a capacitor C5; wherein, Pin 1 of the key KEY1 is connected to a 3.3V power supply, and pin 2 of the key KEY1 is connected to the first IO interface of the control chip; pin 1 of the key KEY2 is connected to a 3.3V power supply, and pin 2 of the key KEY2 is connected to the second IO interface of the control chip; pin 1 of the start button BOOT is connected to the third IO interface of the control chip, and pin 2 of the start button BOOT is grounded; the first end of the capacitor C5 is connected to the fourth IO interface of the control chip, and the second end of the capacitor C5 is grounded.

6. The anti-lost device based on WIFI communication according to claim 5, characterized in that: The control unit also includes an LED circuit; the LED circuit includes LED1, LED2, resistor R1 and resistor R2; the anode of the LED1 is connected to a 3.3V power supply, and the cathode of the LED2 is connected to the fifth IO interface of the control chip through the resistor R1; the anode of the LED2 is connected to a 3.3V power supply, and the cathode of the LED2 is connected to the sixth IO interface of the control chip through the resistor R2.

7. The anti-lost device based on WIFI communication according to claim 6, characterized in that: The LED1 and the LED2 are light-sensitive LEDs.

8. The anti-lost device based on WIFI communication according to claim 7, characterized in that: The control unit also includes an alarm circuit; the alarm circuit includes a buzzer BUZZER1, a transistor Q1 and a resistor R3; the negative pole of the buzzer BUZZER1 is grounded, the positive pole of the buzzer BUZZER1 is connected to the emitter of the transistor Q1, the collector of the transistor Q1 is connected to a 3.3V power supply, and the base of the transistor Q1 is connected to the seventh IO interface of the control chip through the resistor R3.

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