An internet of things gateway

Abstract

This utility model discloses an Internet of Things (IoT) gateway, including a power management module, a charging / discharging circuit, a battery assembly, a main control circuit, and a first wireless communication module and a second wireless communication module connected to the main control circuit. The output terminal of the power management module is connected to the charging / discharging circuit and the main control circuit, and the charging / discharging circuit is connected to the battery assembly. The battery assembly is connected to the main control circuit through a seventh diode. The first wireless communication module is used for short-range wireless communication, connecting IoT-based electronic devices; the second wireless communication module is used for long-range wireless communication, connecting to a host computer and a server; it stores electrical energy through the charging / discharging circuit and the battery assembly; and in the event of power failure, it supplies power to the main control circuit, the first wireless communication module, and the second wireless communication module, thereby improving the stability of the gateway.

Description

Technical Field

[0001] This utility model relates to the field of digital information transmission technology, specifically to an Internet of Things (IoT) gateway. Background Technology

[0002] An IoT gateway is an intermediate device between the sensing layer and the network layer in the IoT architecture. It can be used for both wide area network (WAN) and local area network (LAN) interconnection. With the development of modern industry, more and more electronic devices are entering the IoT, and communication between the host computer and the devices is becoming more and more frequent and important.

[0003] CN219678494U discloses a modular and combinable IoT gateway device with a high degree of modularity and a wide variety of application scenarios. It can reduce maintenance costs and overall development costs. The wireless communication module used is not limited to Wi-Fi, Zigbee, LoRa, Bluetooth, infrared, and UWB short-range wireless communication technologies.

[0004] The stability and reliability of IoT gateways have become important performance characteristics; in particular, the power supply of outdoor IoT gateways is unstable, and power outages occur frequently. Utility Model Content

[0005] In view of the above-mentioned technical problems existing in the prior art, this utility model provides a highly stable Internet of Things gateway that can still operate for a period of time after a power outage, thus avoiding data loss.

[0006] This utility model discloses an Internet of Things gateway, including a power management module, a charging and discharging circuit, a battery assembly, a main control circuit, and a first wireless communication module and a second wireless communication module connected to the main control circuit; the output terminal of the power management module is connected to the charging and discharging circuit and the main control circuit, and the charging and discharging circuit is connected to the battery assembly; the battery assembly is connected to the main control circuit through a seventh diode.

[0007] Preferably, the power management module includes a filter and a power converter.

[0008] The live and neutral wires are connected to the input terminals of the filter; the output terminal of the filter is connected to the input terminal of the power converter; the output terminal of the power converter outputs 15V voltage.

[0009] Preferably, the live wire is connected to the filter via a thermistor; a varistor and a 38th capacitor are connected between the live wire pin and the neutral wire pin at the filter input.

[0010] Preferably, a 38th capacitor C38 is connected between the two pins at the output end of the filter; and a 39th capacitor and a 40th capacitor are connected in series.

[0011] Preferably, the ground wire is connected between the thirty-ninth capacitor and the fortieth capacitor;

[0012] The power converter output has a positive pin and a negative pin; the negative pin is grounded; the positive pin serves as the output of the power management module.

[0013] The forty-first capacitor, the forty-second capacitor, and the eighth diode are connected between the positive and negative terminals.

[0014] Preferably, the output terminal of the power management module is connected to the input terminal and the CS+ terminal of the battery charger;

[0015] The charging terminal of the battery charger is connected to the seventh diode via the fifth diode;

[0016] The output terminal of the fifth diode is equipped with a battery anode connection terminal;

[0017] The anode of the battery module is connected to the anode terminal of the battery, and the cathode is grounded.

[0018] Preferably, the output terminal of the power management module is connected to the C / L terminal and C / S- terminal of the battery charger through the 38th resistor, and to the PWRIND terminal through the 36th resistor and the second light-emitting diode; and to the OC_IND terminal of the battery charger through the 37th resistor and the third light-emitting diode.

[0019] One end of the 38th resistor is connected to the emitter of the 3rd transistor; the base of the 3rd transistor is connected to the SINK terminal of the battery charger; the collector of the 3rd transistor is connected to the SOURCE terminal of the battery charger; the emitter and collector of the 3rd transistor are connected to the base through the 40th resistor.

[0020] Preferably, the SOURCE terminal of the battery charger is connected to the input terminal of the fifth diode, the BIAS terminal is connected to the input terminal of the fifth diode through the forty-second resistor, and the charging terminal is connected to the input terminal of the fifth diode through the forty-third resistor.

[0021] Preferably, the ST_LEV terminal of the battery charger is connected to the Vsense terminal through the forty-first resistor; the Vsense terminal is grounded through the forty-fifth resistor and connected to the charging terminal CH_EN through the forty-fourth resistor; the COMP terminal is grounded through the thirty-seventh capacitor.

[0022] Preferably, the first wireless communication module includes a ZIGBEE circuit, a UWE circuit, or a LoRa circuit; the second wireless communication module includes a GSM circuit, a GPRS circuit, a 4G circuit, or a 5G circuit.

[0023] Compared with the prior art, the beneficial effects of this utility model are as follows: the first wireless communication module is used for short-range wireless communication and connects to IoT-based electronic devices; the second wireless communication module is used for long-range wireless communication and connects to the host computer and server; it stores electrical energy through a charging and discharging circuit and a battery pack; in the event of power failure, it supplies power to the main control circuit, the first wireless communication module and the second wireless communication module; and it improves the stability of the gateway. Attached Figure Description

[0024] Figure 1 This is a logical block diagram of the IoT gateway of this utility model;

[0025] Figure 2 This is the transformer circuit diagram for the power management module;

[0026] Figure 3 Circuit diagram of the charging and discharging circuit.

[0027] In the diagram, X4 represents the first row of pins; 2 represents the power management module.

[0028] R39, thermistor; RV1, varistor; C36, thirty-sixth capacitor; L4, filter; C38, thirty-eighth capacitor; C39, thirty-ninth capacitor; C40, fortieth capacitor; DA1, power converter; C41, fortieth capacitor; C42, fortieth capacitor; VD8, eighth diode;

[0029] 3. Charging and discharging circuit;

[0030] R40, 40th resistor; VT3, 3rd transistor; VD5, 5th diode; VD6, 6th diode; VD7, 7th diode; D14, battery charger; R36, 36th resistor; R37, 37th resistor; R38, 38th resistor; HL2, 2nd LED; HL3, 3rd LED; R41, 41st resistor; R42, 42nd resistor; R43, 43rd resistor; R44, 44th resistor; R45, 45th resistor; C37, 37th capacitor; +AKB, battery anode connection terminal;

[0031] 4. Battery assembly; 5. Main control circuit; 6. First wireless communication module; 7. Second wireless communication module. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0033] The present invention will now be described in further detail with reference to the accompanying drawings:

[0034] This utility model provides an Internet of Things (IoT) gateway, hereinafter referred to as the gateway, such as... Figures 1-3 As shown, it includes a power management module 2, a charging / discharging circuit 3, a battery assembly 4, a main control circuit 5, a first wireless communication module 6, and a second wireless communication module 7; the first wireless communication module is selected from ZIGBEE circuit, UWE circuit, or LoRa circuit, etc.; the second wireless communication module 7 is selected from GSM circuit, GPRS circuit, 4G circuit, 5G circuit, etc.; the output terminal of the power management module 2 is connected to the charging / discharging circuit 3 and the main control circuit 5, and the charging / discharging circuit 3 is connected to the battery assembly 4; the battery assembly 4 is connected to the main control circuit 5 through the seventh diode D7.

[0035] The first wireless communication module 6 is used for short-range wireless communication to connect IoT-based electronic devices; the second wireless communication module 7 is used for long-range wireless communication to connect a host computer and a server; it stores electrical energy through the charging and discharging circuit 3 and the battery assembly 4; in the event of power failure, it supplies power to the main control circuit 5, the first wireless communication module 6, and the second wireless communication module 7; thus improving the stability of the gateway.

[0036] like Figure 2 As shown, the power management module 2 includes a filter L4 and a power converter DA1. The live wire L and the neutral wire N are connected to the input terminal of the filter L4; the output terminal of the filter L4 is connected to the input terminal of the power converter DA1; the output terminal of the power converter DA1 outputs a +15V voltage to convert the mains power to 15V DC power. The specific model can be LH15-10B15, but is not limited to this.

[0037] Specifically, the live wire L is connected to the filter L4 via thermistor R39; a varistor RV1 and a 38th capacitor C38 are connected between the live and neutral pins of the filter L4 input terminal. The 38th capacitor C38, a 39th capacitor C39, and a 40th capacitor C40 are connected between the two output pins of the filter L4; the ground wire PE is connected between the 39th capacitor C39 and the 40th capacitor C40. The thermistor R39 and the varistor serve to prevent overheating and overvoltage.

[0038] The power converter DA1 has two output pins: a positive pin +Vout and a negative pin -Vout; the negative pin -Vout is grounded; the positive pin +Vout serves as the output of the power management module 2, providing +15V. More specifically, capacitors C41 (41st) and C42 (42nd) and diode VD8 (8th) are connected between the positive pin +Vout and the negative pin -Vout. The positive pin +Vout and the negative pin -Vout are also connected to the 20th detection point TAP20 and the 21st detection point TAP21, respectively.

[0039] The live wire (L), neutral wire (N), and ground wire (PE) are connected to the external AC power supply via the first row of pins (X4). The first row of pins (X4) can be three-pin to five-pin, and the optional fourth pin (X4D) can be grounded.

[0040] like Figure 3 The +15V output from power management module 2 is connected to the input terminals Vin and CS+ of battery charger D14. It is also connected to the C / L and C / S- terminals of battery charger D14 via resistor R38 (38th resistor), and to the PWRIND terminal via resistor R36 (36th resistor) and the second LED HL2. Furthermore, it is connected to the OC_IND terminal via resistor R37 (37th resistor) and the third LED HL3. One end of resistor R38 is connected to the emitter of transistor VT3; the base of transistor VT3 is connected to the SINK terminal of battery charger D14; the collector of transistor VT3 is connected to the SOURCE terminal of battery charger D14; and the emitter / collector of transistor VT3 is connected to the base via resistor R40 (40th resistor).

[0041] The charging terminal CH_EN of battery charger D14 is connected to the seventh diode VD7 via the fifth diode VD5. The output terminal of the fifth diode VD5 is provided with the battery anode connection terminal +AKB; the anode of battery assembly 4 is connected to +AKB, and the cathode is grounded.

[0042] More specifically, the source terminal (SOURCE) is connected to the input terminal of the fifth diode (VD5), the BIAS terminal is connected to the input terminal of the fifth diode (VD5) through the forty-second resistor (R42), and the charging terminal (CH_EN) is connected to the input terminal of the fifth diode (VD5) through the forty-third resistor (R43).

[0043] The ST_LEV terminal is connected to the Vsense terminal via resistor R41 (41st resistor); the Vsense terminal is grounded via resistor R45 (45th resistor) and connected to the charging terminal CH_EN via resistor R44 (44th resistor). The COMP terminal is grounded via capacitor C37 (37th capacitor).

[0044] The output terminal of charging / discharging circuit 3 is connected to the output terminals of the sixth diode VD6 and the seventh diode VD7, serving as the power supply terminal +UM. A twenty-second monitoring point TAP22 can be set on the power supply terminal +UM to provide grounding power for the downstream power supply circuit or transformer circuit. The transformer circuit can include 3.3V, 5V, etc., and can be designed according to actual usage. Battery charger D14 can be a linear lead-acid battery charger UC3906DW, but is not limited to this.

[0045] The microprocessor of the main control circuit 5 can be an STM32F103CXT6, but is not limited to it. The first wireless communication module 6 and the second wireless communication module 7 can be commercially available products, which are existing technologies and will not be described in detail here.

[0046] This invention converts mains power into 15V low-voltage power through power management module 2, and stores electrical energy through charging and discharging circuit 3 and battery assembly 4. The setting of the seventh diode D7 prevents the power management module 2 from directly charging the battery assembly; the setting of the sixth diode D6 prevents the battery assembly 4 from supplying power to the power management module 2 in reverse.

[0047] After a power outage, the gateway is powered by battery module 4, which improves power supply stability, avoids data loss due to power outage, and improves the stability and reliability of the IoT gateway.

[0048] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An Internet of Things (IoT) gateway, characterized in that, It includes a power management module, a charging and discharging circuit, a battery assembly, a main control circuit, and a first wireless communication module and a second wireless communication module connected to the main control circuit; The output of the power management module is connected to the charging / discharging circuit and the main control circuit. The charging / discharging circuit is connected to the battery pack. The battery pack is connected to the main control circuit through the seventh diode.

2. The IoT gateway according to claim 1, characterized in that, The power management module includes a filter and a power converter. The live and neutral wires are connected to the input terminals of the filter; the output terminal of the filter is connected to the input terminal of the power converter; the output terminal of the power converter outputs 15V voltage.

3. The IoT gateway according to claim 2, characterized in that, The live wire is connected to the filter via a thermistor; a varistor and a 38th capacitor are connected between the live wire pin and the neutral wire pin at the filter input.

4. The IoT gateway according to claim 3, characterized in that, A 38th capacitor is connected between the two pins at the output of the filter; and a 39th capacitor and a 40th capacitor are connected in series.

5. The IoT gateway according to claim 4, characterized in that, The ground wire is connected between the thirty-ninth capacitor and the fortieth capacitor; The power converter output has a positive pin and a negative pin; the negative pin is grounded; the positive pin serves as the output of the power management module. The forty-first capacitor, the forty-second capacitor, and the eighth diode are connected between the positive and negative terminals.

6. The IoT gateway according to claim 1, characterized in that, The output terminal of the power management module is connected to the input terminal and CS+ terminal of the battery charger; The charging terminal of the battery charger is connected to the seventh diode via the fifth diode; The output terminal of the fifth diode is equipped with a battery anode connection terminal; The anode of the battery module is connected to the anode terminal of the battery, and the cathode is grounded.

7. The IoT gateway according to claim 6, characterized in that, The output terminal of the power management module is connected to the C / L and C / S- terminals of the battery charger through the 38th resistor, and to the PWRIND terminal through the 36th resistor and the second LED; it is also connected to the OC_IND terminal of the battery charger through the 37th resistor and the third LED. One end of the 38th resistor is connected to the emitter of the 3rd transistor; the base of the 3rd transistor is connected to the SINK terminal of the battery charger; the collector of the 3rd transistor is connected to the SOURCE terminal of the battery charger; the emitter and collector of the 3rd transistor are connected to the base through the 40th resistor.

8. The IoT gateway according to claim 7, characterized in that, The SOURCE terminal of the battery charger is connected to the input terminal of the fifth diode, and the BIAS terminal is connected to the input terminal of the fifth diode through the forty-second resistor; the charging terminal is connected to the input terminal of the fifth diode through the forty-third resistor.

9. The IoT gateway according to claim 8, characterized in that, The ST_LEV terminal of the battery charger is connected to the Vsense terminal through the forty-first resistor; the Vsense terminal is grounded through the forty-fifth resistor and connected to the charging terminal CH_EN through the forty-fourth resistor; the COMP terminal is grounded through the thirty-seventh capacitor.

10. The IoT gateway according to claim 1, characterized in that, The first wireless communication module includes a ZIGBEE circuit, a UWE circuit, or a LoRa circuit; the second wireless communication module includes a GSM circuit, a GPRS circuit, a 4G circuit, or a 5G circuit.

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