Internet of things card holder with anti-interference design circuit

Abstract

The utility model provides an Internet of Things card holder with an anti-interference design circuit. The internet of things card holder is mainly characterized in that the internet of things card holder is welded on a circuit board in the internet of things equipment, and an internet of things card is connected into the internet of things equipment after being inserted into the internet of things card holder. The Internet of Things card seat comprises pins used for being connected with Internet of Things card pins, welding feet used for being welded on an Internet of Things equipment circuit board and an anti-interference circuit. The pins used for connecting the pins of the Internet of Things card comprise a power supply pin, a reset pin, a clock pin, a ground pin, an input / output pin and the like; the welding pins used for being welded on the circuit board of the Internet of Things equipment comprise a power supply welding pin, a reset welding pin, a clock welding pin, a ground welding pin, an input / output welding pin and the like; the anti-interference circuit comprises an inductor, a capacitor, a resistor, an optocoupler and other devices.

Description

Technical Field

[0001] This utility model relates to an Internet of Things (IoT) card holder with an anti-interference design circuit. Background Technology

[0002] IoT devices are increasingly being used across various industries and fields. However, due to their prolonged use with electricity, spatial electromagnetic coupling interference from the environment and common-mode glitches caused by power supply load variations continuously affect communication between IoT devices and IoT SIM cards. This objectively results in IoT SIM cards experiencing significantly more data corruption due to electromagnetic interference than traditional SIM cards. The probability of data corruption on an IoT SIM card depends on the electromagnetic compatibility (EMC) of the IoT device and the interference immunity of the IoT SIM card itself. Different IoT device manufacturers have varying EMC design capabilities, and external interference will be transmitted to the IoT SIM card to varying degrees. Furthermore, due to limitations in manufacturing processes and area, it is difficult to implement interference-resistant circuits composed of inductors, capacitors, resistors, optocouplers, and other components within the IoT SIM card chip itself, making it challenging to improve the card's inherent interference immunity. Utility Model Content

[0003] This invention proposes an IoT SIM card socket with an anti-interference design circuit. This circuit filters or attenuates spatial electromagnetic coupling interference from the environment and common-mode glitches caused by power supply load changes before they enter the IoT SIM card chip, ensuring normal communication between the IoT device and the IoT SIM card and reducing data corruption. Its main features are: the anti-interference circuit is encapsulated inside the IoT SIM card socket, which includes pins for connecting the IoT SIM card, solder pads for soldering onto the IoT device's circuit board, and inductors, capacitors, resistors, optocouplers, and other components forming the anti-interference circuit. The IoT SIM card socket is soldered onto the circuit board inside the IoT device. After the IoT SIM card is inserted into the socket, it is connected to the IoT device. The IoT SIM card pins include power pins, reset pins, clock pins, ground pins, and input / output pins. Within the IoT SIM card socket, the socket pins for connecting the IoT SIM card pins include power pins, reset pins, clock pins, ground pins, and input / output pins. Within the IoT SIM card socket, the solder pads for soldering onto the IoT device's circuit board include power, reset, clock, ground, and input / output pads. The inductors, capacitors, resistors, optocouplers, and other components forming the anti-interference circuit are all encapsulated within the dedicated IoT SIM card socket. Some components of the anti-interference circuit are connected between the IoT SIM card socket's pins and solder pads, some are connected between the IoT SIM card socket's pins, some are connected between the IoT SIM card socket's pins, and some are directly connected between the IoT SIM card socket's pins and solder pads. The output of the anti-interference circuit is connected to the IoT SIM card socket's pins, and the input of the anti-interference circuit is connected to the IoT SIM card socket's solder pads. When the IoT device is subjected to spatial electromagnetic coupling interference, or when the IoT device's power supply experiences common-mode glitch interference due to load changes, the anti-interference circuit can filter out or attenuate the glitch interference before it enters the IoT SIM card's pins through the socket's solder pads. This protects the IoT SIM card and reduces data corruption.

[0004] In harsh electromagnetic interference environments, IoT devices using IoT card sockets with anti-interference design circuits can reduce the impact of external interference by eliminating the need for filtering circuit design in the IoT devices and reducing the need for excessive filtering design in the IoT card chips. Attached Figure Description

[0005] Figure 1 Schematic diagram of IoT card slot with anti-interference design circuit. Detailed Implementation

[0006] like Figure 1The diagram shows a schematic of an IoT SIM card socket with anti-interference design circuitry. The IoT SIM card socket 2 is soldered onto the circuit board inside the IoT device. After the IoT SIM card 1 is inserted into the IoT SIM card socket 2, it is connected to the IoT device. The pins of the IoT SIM card 1 include power supply pin VCC1, reset pin RST1, clock pin CLK1, ground pin GND1, and input / output pin IO1. Within the IoT SIM card socket 2, the pins used to connect the IoT SIM card 1 are power supply pin VCC2, reset pin RST2, clock pin CLK2, ground pin GND2, and input / output pin IO2. Within the IoT SIM card socket 2, the solder pads used to solder the IoT SIM card to the IoT device circuit board are power supply pin VCC3, reset pin RST3, clock pin CLK3, ground pin GND3, and input / output pin IO3. An inductor L is connected between power supply pin VCC2 and power supply pin VCC3, and a capacitor C is connected between power supply pin VCC2 and ground pin GND2. The reset pin RST2, clock pin CLK2, ground pin GND2, and input / output pin IO2 are directly connected to the reset pin RST3, clock pin CLK3, ground pin GND3, and input / output pin IO3, respectively. In this way, capacitor C and inductor form an anti-interference circuit. When the IoT device is subjected to spatial electromagnetic coupling interference, or when common-mode glitches occur at the power supply end of the IoT device due to load changes, and these glitches enter the power supply pin VCC1 and ground pin GND1 of IoT card 1, the anti-interference circuit composed of capacitor C and inductor L can filter out or attenuate the glitches, thus protecting IoT card 1 and reducing data corruption.

[0007] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Any modifications, equivalent substitutions, or improvements made within the design principles and technical solutions of this utility model are included within the protection scope of this utility model.

Claims

1. An IoT card holder with an anti-interference design circuit, characterized in that, The anti-interference circuit is packaged inside the IoT card socket. The IoT card socket includes pins for connecting IoT card pins, solder pads for soldering onto the circuit board of IoT devices, and components such as inductors, capacitors, resistors, and optocouplers that make up the anti-interference circuit. One end of the anti-interference circuit is connected to the IoT card pins, and the other end of the anti-interference circuit is connected to the solder pads of the IoT card socket.

2. The IoT card holder as described in claim 1, characterized in that, An inductor forming an interference circuit is connected between the power pin in the pins used to connect the IoT card pins and the power solder pin in the solder pads used to solder onto the IoT device circuit board; a capacitor forming an interference circuit is connected between the power pin and the ground pin in the pins used to connect the IoT card pins.

3. The IoT card holder as described in claim 1, characterized in that, The reset pin, clock pin, ground pin, and input / output pin in the pins used to connect the IoT card pins are directly connected to the reset solder pin, clock solder pin, ground solder pin, and input / output solder pin in the pins used to solder onto the IoT device circuit board.

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