A fire detector base having location and communication functionality

Abstract

The utility model discloses a fire detector base with positioning and communication function, this fire detector base is including base shell and base circuit board, and the RJ45 network mouth in the circuit board is connected safely with network chip through network transformer, and network chip W5500 is controlled by bluetooth chip nRF52810 through pin, and bluetooth chip receives control information and sends positioning information through TCP / IP, and rectifier bridge is connected with RJ45 network mouth and PD controller TPS2376H through pin, realizes power rectification and poE power supply, and each chip working power and ground are isolated through magnetic pearl, and bluetooth chip nRF52810 is connected with radio frequency switch SKYA21001 through pin, and radio frequency switch SKYA21001 is connected with two antennas through pin, and two antennas are used alternately under the control of bluetooth chip and send and receive bluetooth data, and bluetooth chip nRF52810 controls LED pilot lamp through pin, and indicates working condition. Not only have the function of ordinary fire detector base, but also can position and report to the fire personnel and the trapped personnel in the fire, and the influence to the existing fire system is extremely low.

Description

Technical Field

[0001] This utility model relates to the field of fire detector technology, specifically a fire detector base with positioning and communication functions. Background Technology

[0002] On April 29, 2024, the State issued the GB17945—2024 standard "Fire Emergency Lighting and Evacuation Guidance System", which made new provisions for emergency fire protection and required that emergency fire indicator lights can locate and report indoor personnel.

[0003] However, emergency fire indicator lights are generally installed in the corridors of the building, covering a relatively small area, while fire detectors are more densely distributed and are also installed in the rooms. The fire detectors are also fixed on the fire detector base.

[0004] However, existing fire detector bases lack positioning and communication functions. Therefore, designing a fire detector base with positioning and data transmission capabilities, without affecting existing fire detectors, is a reasonable solution for personnel location in emergency firefighting scenarios. Bluetooth Low Energy (BLE) is a mature and low-power radio frequency technology for positioning, while TCP / IP offers high speed and high reliability. Therefore, designing a base with both Bluetooth positioning and TCP / IP communication functions allows for the upgrade of existing fire protection systems by laying network cables and replacing the base, achieving the goal of locating and reporting personnel indoors. Utility Model Content

[0005] The purpose of this invention is to provide a fire detector base with positioning and communication functions to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a fire detector base with positioning and communication functions, comprising a base shell and a base circuit board, wherein the base shell contains bus terminals, and the base circuit board is fixedly installed inside the base shell, the base circuit board including an RJ45 network port, a network transformer, a Bluetooth chip, a network chip, a rectifier bridge, a PD controller, a power chip, an RF switch, two antennas and an LED indicator.

[0007] The base housing is connected to the fire alarm bus via bus terminals, providing an installation interface and power supply for the fire detector. The base circuit board connects to an external PoE switch via an RJ45 network port for network connection and power supply, establishing a physical path for TCP / IP and providing PoE power to the base circuit board. The RJ45 network port within the base circuit board is securely connected to the network chip via a network transformer, ensuring a stable and reliable TCP / IP connection. The network chip W5500 is controlled by the Bluetooth chip nRF52810 via pins and provides TCP / IP services. The Bluetooth chip receives control information from the server via TCP / IP and sends collected Bluetooth positioning information to the server. The network chip W5500 is connected to the crystal via pins. The rectifier bridge is connected to the RJ45 network port and the PD controller TPS2376H via pins to achieve power rectification and PoE power supply. The circuit is powered by an E-type power supply, which provides DC power. The power chip LM5009A is connected to the PD controller TPS2376H via a pin, reducing the DC high voltage to 12V. The power chip TPS561201 reduces the 12V to 3.3V via a pin, providing a 3.3V operating level for the Bluetooth chip, network chip, network transformer, RF switch, and LED indicator. The power supplies and ground of each chip are isolated by a ferrite bead. The Bluetooth chip nRF52810 is connected to the RF switch SKYA21001 via a pin. The RF switch is connected to two antennas via a pin. Under the control of the Bluetooth chip, the two antennas are used alternately to transmit and receive Bluetooth data. The two antennas are connected to the pins of the RF switch SKYA21001. The Bluetooth chip nRF52810 controls the LED indicator via a pin to indicate the working status. The Bluetooth chip nRF52810 is also connected to the crystal via a pin.

[0008] Preferably, the fire protection bus supplies power to the fire detector through the bus terminals of the fire detector base, and the base housing can be used to fix the fire detector.

[0009] Preferably, the base circuit board establishes a network connection with an external PoE switch via an RJ45 network port and introduces PoE power provided by the switch.

[0010] Preferably, the network chip W5500 is connected to the Bluetooth chip and network transformer via pins to provide TCP / IP services and interact with the server via the control of the Bluetooth chip.

[0011] Preferably, the Bluetooth chip nRF52810 pins are connected to the RF switch SKYA21001 after passing through a filter capacitor and a filter inductor, providing a multi-antenna signal path selection function.

[0012] Preferably, the RF switch is connected to two antennas, and the RF switch SKYA21001 is controlled to turn on and off by a Bluetooth chip, so that the two antennas of the subsequent stage are used alternately to transmit and receive Bluetooth data.

[0013] Preferably, the two antennas are mounted in different directions on the base circuit board to ensure full coverage of the Bluetooth signal.

[0014] Preferably, the Bluetooth chip nRF52810 is connected to 32M and 32.768K crystals via pins, and the crystal pins are connected to matching capacitors respectively.

[0015] Preferably, the base circuit board contains a PD controller, which can be directly connected to a PoE switch to negotiate power with the switch.

[0016] Preferably, the power pins and ground pins of each chip on the base circuit board are isolated by ferrite beads, and the power pins are filtered out by capacitors.

[0017] Beneficial effects

[0018] This utility model provides a fire detector base with positioning and communication functions, which has the following advantages:

[0019] This fire detector base, which has positioning and communication functions, not only has the functions of an ordinary fire detector base, but can also locate and report trapped people and firefighters in a fire, and has minimal impact on the existing fire protection system, by setting up a base shell and a base circuit board. Attached Figure Description

[0020] Figure 1 This is a block diagram of the fire detector base system of this utility model;

[0021] Figure 2 This is a circuit diagram of the RJ45 network port and network transformer of this utility model;

[0022] Figure 3 This is the peripheral circuit diagram of the network chip (W5500) of this utility model;

[0023] Figure 4 This is a circuit diagram of the Bluetooth chip (nRF52810) and RF switch of this utility model;

[0024] Figure 5 This is the circuit diagram of the PoE power rectifier and PD controller of this utility model;

[0025] Figure 6 This is the circuit diagram of the first-stage step-down PoE power supply of this utility model (12V output).

[0026] Figure 7This is the circuit diagram of the two-stage step-down power supply of this utility model (3.3V output). Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0030] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0031] Please see Figure 1-7 This utility model provides a technical solution: a fire detector base with positioning and communication functions, including a base shell and a base circuit board. The base shell contains bus terminals, and the base circuit board is fixedly installed inside the base shell. The base circuit board includes an RJ45 network port, a network transformer, a Bluetooth chip, a network chip, a rectifier bridge, a PD controller, a power chip, an RF switch, two antennas, and an LED indicator.

[0032] The base housing connects to the fire alarm bus via bus terminals, providing an installation interface and power supply for the fire detector. The base circuit board connects to an external PoE switch via an RJ45 network port for network connection and power supply, establishing a physical path for TCP / IP and providing PoE power to the base circuit board. The RJ45 network port within the base circuit board is securely connected to the network chip via a network transformer, ensuring a stable and reliable TCP / IP connection. The network chip W5500 is controlled by the Bluetooth chip nRF52810 via pins and provides TCP / IP services. The Bluetooth chip receives control information from the server via TCP / IP and sends collected Bluetooth location information to the server. The network chip W5500 is connected to the crystal via pins. The rectifier bridge is connected to the RJ45 network port and the PD controller TPS2376H via pins to achieve power rectification and PoE power supply, providing DC power to the circuit. The power supply chip LM5009A... The PD controller TPS2376H is connected via pins to reduce the DC high voltage to 12V. The power supply chip TPS561201 reduces the 12V to 3.3V via pins, providing a 3.3V operating level for the Bluetooth chip, network chip, network transformer, RF switch, and LED indicator. The power supply and ground of each chip are isolated by ferrite beads, which can effectively suppress and isolate high-frequency noise and prevent mutual interference. The Bluetooth chip nRF52810 is connected to the RF switch SKYA21001 via pins. The RF switch is connected to two antennas via pins. Under the control of the Bluetooth chip, the two antennas are used alternately to transmit and receive Bluetooth data. The two antennas are connected to the pins of the RF switch SKYA21001. The two antennas are located in different directions on the base circuit board, which can significantly increase the antenna coverage area. The Bluetooth chip nRF52810 controls the LED indicator via pins to indicate the working status. The Bluetooth chip nRF52810 is connected to the crystal via pins.

[0033] The fire protection bus supplies power to the fire detector through the bus terminals on the base of the fire detector, and the base housing can be used to fix the fire detector.

[0034] The base circuit board establishes a network connection with an external PoE switch via an RJ45 network port and introduces PoE power provided by the switch.

[0035] The W5500 network chip connects to the Bluetooth chip and network transformer via pins, providing TCP / IP services and interacting with the server via the control of the Bluetooth chip.

[0036] The Bluetooth chip nRF52810 pins are connected to the RF switch SKYA21001 after passing through a filter capacitor and a filter inductor, providing a multi-antenna signal path selection function.

[0037] The RF switch is connected to two antennas. The RF switch SKYA21001 is controlled to turn on and off via a Bluetooth chip, and the two antennas in the subsequent stage are used alternately to transmit and receive Bluetooth data.

[0038] Two antennas are mounted on the base circuit board in different directions to ensure full Bluetooth signal coverage.

[0039] The Bluetooth chip nRF52810 is connected to 32M and 32.768K crystals via pins, and the crystal pins are connected to matching capacitors respectively.

[0040] The base circuit board contains a PD controller, which can be directly connected to a PoE switch to negotiate power with the switch.

[0041] The power and ground pins of each chip on the base circuit board are isolated by ferrite beads, and the power pins are filtered out by capacitors.

[0042] The external fire protection bus is connected to the base housing via terminals and installed and connected to the fire detector, providing physical and electrical connections for the fire detector.

[0043] By setting up a base shell and a base circuit board, it not only has the functions of a regular fire detector base, but can also locate and report trapped people and firefighters in a fire, and has minimal impact on the existing fire protection system.

[0044] Further, see Figure 2 The base circuit board connects to an external PoE switch via an RJ45 network port to establish a TCP / IP physical path and provide power to the base circuit board.

[0045] See Figure 2 The pins TDP, TDN, RDP, and RDN of the RJ45 network port J1 on the circuit board are connected to the pins TX+, TX-, RX+, and RX- of the network transformer 11FB-05NL, respectively, to complete the connection of the network data differential signal pairs. The two LEDs inside port J1 are connected to pull-up resistors R35 and R36, respectively, and are connected to the LINKLED and ACTLED pins of the network chip W5500 to indicate the network connection and activity status. Pins 4 and 5 (PoE_45) and pins 7 and 8 (PoE_78) of port J1 may be connected to power supplied by a PoE power supply switch, leading into the circuit board and connecting to rectifier bridge D2 to provide operating power to the circuit board. Pins 13 and 14 of the network port are connected to the metal casing and grounded separately to prevent electrostatic interference from being introduced into other circuits on the circuit board.

[0046] Further, see Figure 2 , Figure 3 and Figure 4The network transformer 11FB-05NL is connected between the network chip W5500 and the network port J1 to ensure stable and reliable network communication.

[0047] The TD+ and TD- pins of network transformer U6 are connected to pull-up resistors R34 and R33 respectively, and are also connected to the TXP and TXN pins of network chip U5. The CT1 pin of U6 is connected to pull-up resistor R32 and grounding capacitor C39. The RD+ and RD- pins of network transformer U6 are connected to the first terminals of capacitors C40 and C41 respectively. The second terminals of C40 and C41 are connected to the RXP and RXN pins of network chip U5. At the same time, the second terminals of C40 and C41 are connected to the first terminals of resistors R38 and R37 respectively. The CT2 pin of U6 and the second terminals of resistors R38 and R37 are both connected to the first terminal of capacitor C42, and the second terminal of capacitor C42 is grounded.

[0048] The CT4 pin of the network transformer U6, which is also PoE_12, and the CT3 pin, which is also PoE_36, may be connected to the power supply provided by the PoE power supply switch, which is introduced into the circuit board and connected to the rectifier bridge D1 to provide the circuit board with operating power.

[0049] Further, see Figure 3 and Figure 4 The network chip W5500 provides TCP / IP services and connects to the Bluetooth chip nRF52810 via a serial port. The pins SCSn, SCLK, MISO, MOSI, INTn, and RSTn of the network chip U6 are connected to the pins P0.08, P0.05 / AIN3, P0.04 / AIN2, P0.03 / AIN1, P0.12, and P0.11 of the Bluetooth chip U4, respectively, to realize the interconnection, interrupt wake-up, and reset functions of the network chip and the Bluetooth chip.

[0050] Pins 4, 8, 11, 15, 17 and 21 of the network chip U6 are AVDD pins, all connected to a 3V3A power supply, and each connected to a filter capacitor;

[0051] Pin 28 of the network chip U6 is the AVDD pin, which is connected to the 3V3D power supply and to the filter capacitor C27 and the energy storage capacitor C26.

[0052] The AGND and GND pins of the network chip U6 are both connected to the power supply GND.

[0053] Pin EXRES1 is connected to a 12.4K pull-down resistor R20, pin TOCAP is connected to a 4.7uF external reference capacitor, and pin 1V2O is connected to a 10nF capacitor.

[0054] The RSVD pins 23, 39, 40, 41, and 42 of the network chip U6 are all connected to the power supply GND through pull-down resistors. The pins SCSn, INTn, RSTn, PMODE2, PMODE1, and PMODE0 are all connected to the power supply 3V3D through pull-up resistors. The pins XI / CLKIN and XO are connected to the crystal, and the crystal is connected to a matching capacitor.

[0055] See Figure 4 The Bluetooth chip acts as the main controller on the base circuit board, sending and receiving Bluetooth information, receiving control information sent by the server via TCP / IP, and sending the collected Bluetooth positioning information to the server.

[0056] Further, see Figure 4 The Bluetooth chip nRF52810 connects to the network chip via a serial port, connects to the 32.768K crystal via pins P0.00 / XL1 and P0.01 / XL2, and connects to the 32M crystal via pins XC1 and XC2. Each pin of the two crystals is connected to a matching capacitor to ensure stable operation of the crystals and provide the Bluetooth chip with a precise operating frequency.

[0057] The two VDD pins of the Bluetooth chip U4 are connected to filter capacitors C21 and C25 respectively. Pins DEC1, DEC2 and DEC4 are connected to grounding capacitors C20, C17 and C16 respectively. Pin P0.15 is connected to an LED indicator to indicate the working status.

[0058] Further, see Figure 4 The Bluetooth chip nRF52810 is connected to the first terminal of inductor L9 via pin ANT. The second terminal of inductor L9 is connected to the first terminal of inductor L10 and the first terminal of capacitor C24. The second terminal of inductor L10 is connected to the RF signal input pin J1 of the RF switch SKYA21001, and the second terminal of capacitor C24 is grounded. Inductors L9 and L10 and capacitor C24 form an impedance matching network, matching the output impedance of the antenna circuit to the standard 50Ω, reducing Bluetooth signal reflection and improving transmission efficiency.

[0059] Furthermore, the P0.14 and P0.18 pins of the Bluetooth chip U4 are connected to the V1 and V2 pins of the RF switch U7 via resistors R39 and R40. Each of the V1 and V2 pins has a filter capacitor connected to it. The Bluetooth chip controls the switching of the RF switch antenna through the P0.14 and P0.18 pins.

[0060] Pins J2 and J3 of the RF switch SKYA21001 are connected to the two antennas of the system, respectively, and pin GND of the RF switch U7 is connected to the system GND. The two antennas cover two directions respectively, increasing the coverage area of ​​a single device antenna.

[0061] See Figure 2 and Figure 5 The rectifier bridges D1 and D2 are connected to the network transformer U6 and the network port J1, respectively, which can be compatible with the two types of PoE power supply methods to ensure successful power supply and provide DC power to the circuit.

[0062] The output pins of the two rectifier bridges are connected in parallel, with TVS diodes and filter capacitors connected at both ends to provide surge protection for the subsequent circuitry. They are also connected to pins VDD and VSS of the PD controller TPS2376H. Pin VDD of PD controller U1 is connected to the first terminals of resistors R1 and R2; pin DET is connected to the second terminal of resistor R2; pin UVLO and the first terminal of resistor R5 are connected to the second terminal of resistor R1; and the second terminal of resistor R5 is connected to pin VSS. Pin ILIM of PD controller U1 is connected to pull-down resistor R3 to set different startup surge currents. Pin CLASS of PD controller U1 is connected to pull-down resistor R4; different resistance values ​​correspond to different power consumption levels of the PD device. A storage capacitor C2 is connected between pins VDD and RTN of PD controller U1.

[0063] See Figure 6 and Figure 7 The LM5009A power chip steps down the DC high voltage to 12V, while the TPS561201 power chip steps down the 12V voltage to 3.3V, providing a 3.3V operating level for the network chip, Bluetooth chip, network transformer, and LED indicators. The VIN and RTN pins of the LM5009A power chip are connected to the VDD and RTN pins of the PD controller, serving as the input power for the LM5009A. After conversion, the output power voltage is 12V. The VIN and EN pins of the TPS56120 power chip are connected to the 12V output power of the LM5009 power chip, serving as the input power for the TPS56120. After conversion, the power voltage is also reduced to 3.3V. This two-stage power conversion effectively improves power conversion efficiency.

[0064] The critical power supplies and grounds of each chip are isolated by ferrite beads, which can effectively suppress and isolate high-frequency noise and prevent mutual interference.

[0065] This invention not only fixes the fire detector but also enables Bluetooth positioning with extremely low power consumption, allowing for precise location of people seeking refuge in the fire scene and firefighters entering homes to fight the fire. It also transmits data back via TCP / IP, ensuring reliable communication and high real-time positioning.

[0066] The working principle of this utility model is as follows: The fire detector base is installed on the roof to fix the fire detector. The bus terminals on the base are connected to the fire protection bus to power the fire detector. The fire detector base contains a circuit board, which is powered by an external PoE switch. The Bluetooth chip acts as the main controller, receiving control information sent by the server and displaying the current working status through LED indicators. At the same time, it periodically sends Bluetooth broadcast information, receives Bluetooth broadcast information from mobile devices entering the positioning area, and uploads the received data to the cloud server. The server database contains preset maps and Bluetooth module binding information. The collected data is processed by the positioning algorithm to calculate the floor and coordinates of the mobile device, which are displayed on the server map platform and the mobile device to achieve personnel positioning. The Bluetooth signal coverage is increased by setting up two antennas.

[0067] The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0068] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A fire detector base with positioning and communication functions, comprising a base housing and a base circuit board, characterized in that: The base housing contains bus terminals, and the base circuit board is fixedly installed inside the base housing. The base circuit board includes an RJ45 network port, a network transformer, a Bluetooth chip, a network chip, a rectifier bridge, a PD controller, a power chip, an RF switch, two antennas, and LED indicator lights. The base housing is connected to the fire alarm bus via bus terminals, providing an installation interface and power supply for the fire detector. The base circuit board connects to an external PoE switch via an RJ45 network port for network connection and power supply, establishing a physical path for TCP / IP and providing PoE power to the base circuit board. The RJ45 network port within the base circuit board is securely connected to the network chip via a network transformer, ensuring a stable and reliable TCP / IP connection. The network chip W5500 is controlled by the Bluetooth chip nRF52810 via pins and provides TCP / IP services. The Bluetooth chip receives control information from the server via TCP / IP and sends collected Bluetooth positioning information to the server. The network chip W5500 is connected to the crystal via pins. The rectifier bridge is connected to the RJ45 network port and the PD controller TPS2376H via pins to achieve power rectification and PoE power supply. The circuit is powered by an E-type power supply, which provides DC power. The power chip LM5009A is connected to the PD controller TPS2376H via a pin, reducing the DC high voltage to 12V. The power chip TPS561201 reduces the 12V to 3.3V via a pin, providing a 3.3V operating level for the Bluetooth chip, network chip, network transformer, RF switch, and LED indicator. The power supplies and ground of each chip are isolated by a ferrite bead. The Bluetooth chip nRF52810 is connected to the RF switch SKYA21001 via a pin. The RF switch is connected to two antennas via a pin. Under the control of the Bluetooth chip, the two antennas are used alternately to transmit and receive Bluetooth data. The two antennas are connected to the pins of the RF switch SKYA21001. The Bluetooth chip nRF52810 controls the LED indicator via a pin to indicate the working status. The Bluetooth chip nRF52810 is also connected to the crystal via a pin.

2. The fire detector base with positioning and communication functions according to claim 1, characterized in that: The fire protection bus supplies power to the fire detector through the bus terminals on the fire detector base, and the base housing can be used to fix the fire detector.

3. A fire detector base with positioning and communication functions according to claim 1, characterized in that: The base circuit board establishes a network connection with an external PoE switch via an RJ45 network port and introduces PoE power provided by the switch.

4. A fire detector base with positioning and communication functions according to claim 1, characterized in that: The network chip W5500 is connected to the Bluetooth chip and network transformer via pins, providing TCP / IP services and interacting with the server through the control of the Bluetooth chip.

5. A fire detector base with positioning and communication functions according to claim 1, characterized in that: The Bluetooth chip nRF52810 pins are connected to the RF switch SKYA21001 after passing through a filter capacitor and a filter inductor, providing a multi-antenna signal path selection function.

6. A fire detector base with positioning and communication functions according to claim 1, characterized in that: The radio frequency switch is connected to two antennas. The SKYA21001 radio frequency switch is controlled to turn on and off via a Bluetooth chip, and the two antennas are used alternately to transmit and receive Bluetooth data.

7. A fire detector base with positioning and communication functions according to claim 1, characterized in that: The two antennas are mounted in different directions on the base circuit board to ensure full coverage of the Bluetooth signal.

8. A fire detector base with positioning and communication functions according to claim 1, characterized in that: The Bluetooth chip nRF52810 is connected to 32M and 32.768K crystals via pins, and the crystal pins are connected to matching capacitors respectively.

9. A fire detector base with positioning and communication functions according to claim 1, characterized in that: The base circuit board contains a PD controller, which can be directly connected to a PoE switch to negotiate power with the switch.

10. A fire detector base with positioning and communication functions according to claim 1, characterized in that: The power and ground pins of each chip on the base circuit board are isolated by ferrite beads, and the power pins are filtered out by capacitors.

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