Multi-interface flame detector wireless Cat1 accessory

Abstract

The invention provides a multi-interface flame detector wireless Cat1 accessory, which comprises a circuit substrate, and is characterized in that the circuit substrate is provided with an electrical connection interface, a power supply conversion module, a signal acquisition and processing module, a 4G-Cat1 wireless module, an SIM (Subscriber Identity Module) card and a ceramic antenna; wherein the power supply conversion module obtains a direct-current power supply through the electrical connection interface, and the direct-current power supply is supplied to the 4G-Cat1 wireless module and the signal acquisition and processing module for use after being subjected to voltage reduction; the signal acquisition and processing module acquires an alarm signal of a flame detector through the electrical wiring interface and then sends the signal to the 4G-Cat1 wireless module, and the 4G-Cat1 wireless module establishes communication with a Cat1 base station through an SIM card and a ceramic antenna to complete data interaction with a cloud platform.

Description

Technical Field

[0001] The present invention belongs to the technical field of transformer manufacturing equipment, and particularly relates to a multi-interface wireless Cat1 accessory for a flame detector. Background Art

[0002] With the rapid economic development of the country, the number of public places with dense population such as material warehouses, large supermarkets, and hospitals has increased significantly, and the potential fire hazards have also increased day by day. In order to reduce the potential fire hazards and losses caused by fires, combined with the current development trend of the Internet of Things technology and external object interconnection, a smart fire protection cloud platform is proposed. Through this platform, fire hazards can be detected in real time, accurately, and timely, and corresponding measures can be taken quickly. In the construction of the smart fire protection cloud platform, a particularly important link is the wirelessization of the data of terminal devices. Wireless terminal devices can quickly build an intelligent and digital fire warning platform. Among all fire protection terminal devices, the flame detector is the most important one. The traditional flame detector is connected to the fire alarm host through wired communication, and the fire alarm host exchanges data with the fire protection platform through a wired network cable. Each link in the entire system is wired-connected, which requires laying dedicated network cables, resulting in high construction difficulty and high construction cost; most of the wireless flame detectors on the market are based on short-distance communication technologies such as ZigBee or LoRA. Such short-distance communication requires a wireless gateway for data transfer to reach the fire protection platform. The laying of the intermediate wireless gateway (base station) is cumbersome, and the packet loss rate is high. If the intermediate device, the wireless gateway, fails, the terminal alarm status cannot be transmitted to the fire protection platform, failing to meet the requirements of real-time and reliable alarm in the fire protection industry. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to provide a multi-interface wireless Cat1 accessory for a flame detector to overcome or at least partially solve or alleviate the above problems.

[0004] The present invention provides a multi-interface wireless Cat1 accessory for a flame detector, including: a circuit board, on which an electrical connection interface, a power conversion module, a signal acquisition and processing module, a 4G-Cat1 wireless module, a SIM card, and a ceramic antenna are provided; wherein, the power conversion module obtains a DC power supply through the electrical connection interface, steps down the DC power supply and supplies it to the 4G-Cat1 wireless module and the signal acquisition and processing module for use; after the signal acquisition and processing module obtains the alarm signal of the flame detector through the electrical connection interface, it sends the signal to the 4G-Cat1 wireless module, and the 4G-Cat1 wireless module establishes communication with the Cat1 base station through the SIM card and the ceramic antenna to complete data interaction with the cloud platform.

[0005] The present invention also has the following optional features.

[0006] Optionally, an indicator light is further provided on the circuit board.

[0007] Optionally, it further includes an explosion-proof housing. The circuit board is arranged inside the explosion-proof housing. The circuit board is connected with an electrical connection wire, and the electrical connection wire passes into the explosion-proof housing and is connected to the electrical connection wire interface.

[0008] Optionally, it further includes an antenna cover. The antenna cover is connected to the upper port of the explosion-proof housing, and the upper end of the circuit board extends into the antenna cover.

[0009] Optionally, it further includes a circuit board fixing seat. The circuit board fixing seat is fixed inside the explosion-proof housing, and the circuit board is vertically fixed in the circuit board fixing seat.

[0010] Optionally, it further includes a positioning lock nut. The positioning lock nut is arranged on the side wall of the explosion-proof housing, and the positioning lock nut is matched with the circuit interface on the flame detector.

[0011] The multi-interface flame detector wireless Cat1 accessory of the present invention is signal-connected to the existing wired flame detector through an electrical connection wire, communicates with the Cat1 base station through a 4G-Cat1 wireless module and a SIM card, and the Cat1 base station communicates directly with the cloud platform to send the detection signal to the relevant mobile status and host. Its signal coverage rate is high, the signal quality is good, the data communication is reliable, the packet loss rate is reduced, and the on-site effect is better than the wireless network composed of self-built small base stations (ZigBee, LoRA). This accessory has complete communication interfaces and can be docked with all conventional wired flame detectors on the market. When newly installing a flame detector on-site, through this accessory, it is possible to communicate with the cloud platform without laying communication cables and installing a fire protection host, reducing the construction difficulty and construction cost. In the wireless and intelligent transformation site, through this accessory, it can be simply and seamlessly grafted onto the original detector, reducing the waste of original resources and shortening the transformation period. Description of the Drawings

[0012] Figure 1 is the explosion structure diagram of the multi-interface flame detector wireless Cat1 accessory of the present invention;

[0013] Figure 2 is Figure 1 the circuit board structure block diagram in

[0014] Figure 3 is the installation diagram of the multi-interface flame detector wireless Cat1 accessory of the present invention;

[0015] Figure 4 is the system block diagram of the intelligent fire protection cloud platform using the multi-interface flame detector wireless Cat1 accessory of the present invention.

[0016] In the above figures: 1. Antenna cover; 2. Circuit board; 3. Explosion-proof housing; 4. Positioning lock nut; 5. Electrical connection wire; 6. Circuit board fixing seat; 7. Electrical connection wire interface; 8. Power conversion module; 9. Signal acquisition and processing module; 10. 4G-Cat1 wireless module; 11. SIM card; 12. Ceramic antenna; 13. Indicator light; 14. Flame detector; 15. Cat1 base station; 16. Cloud platform; 17. Mobile terminal; 18. Host.

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Specific embodiments

[0018] Embodiment 1

[0019] Refer to Figure 1 , Figure 2 and Figure 4 , an embodiment of the present invention provides a multi-interface wireless Cat1 accessory for a flame detector, which is characterized in that it includes: a circuit board 2, on which an electrical connection wire interface 7, a power conversion module 8, a signal acquisition and processing module 9, a 4G-Cat1 wireless module 10, a SIM card 11, and a ceramic antenna 12 are provided; wherein, the power conversion module 8 obtains a DC power supply through the electrical connection wire interface 7, steps down the DC power supply, and supplies it to the 4G-Cat1 wireless module 10 and the signal acquisition and processing module 9 for use; after the signal acquisition and processing module 9 obtains the alarm signal of the flame detector 14 through the electrical connection wire interface 7, it sends the signal to the 4G-Cat1 wireless module 10, and the 4G-Cat1 wireless module 10 establishes communication with the Cat1 base station 15 through the SIM card 11 and the ceramic antenna 12 in the Internet of Things card slot 11 to complete data interaction with the cloud platform 16.

[0020] Cat1 is a standard for the terminal user category under the 4G communication LTE network. The power conversion module 8 obtains a DC (18V - 26V) power supply through the electrical connection wire interface 7. After stepping down, it forms two voltages of 3.8V and 3.3V. Among them, the 3.8V voltage is used by the 4G-Cat1 wireless module 10, and the other 3.3V is used by the signal acquisition and processing module 9.

[0021] The signal acquisition and processing module 9 obtains RS485 digital signals, relay dry contact signals, and 4 - 20mA current signals through the electrical connection interface 7. The communication chip MAX485 in the signal acquisition and processing module 9 converts the RS485 digital signal into a UART - TTL signal and gives it to the 4G - Cat1 wireless module 10; the optocoupler chip EL817 in the signal acquisition and processing module 9 converts the open or closed signal of the relay dry contact into an IO - TTL signal and gives it to the 4G - Cat1 wireless module 10; the operational amplifier chip LM358 in the signal acquisition and processing module 9 and the resistor cooperate to convert the 4 - 20mA current signal into a 0 - 3.3V voltage signal and give it to the 4G - Cat1 wireless module 10.

[0022] In the 4G - Cat1 wireless module 10, the NT26E module establishes communication with the Cat1 base station 15 through the Internet of Things SIM card 11 and the ceramic antenna 12 to complete data interaction with the cloud platform 16. By developing the inside of the NT26E chip, it obtains the UART - TTL signal, IO - TTL signal, and 0 - 3.3V voltage signal transmitted from the signal acquisition and processing module 9 to sense the alarm status of the flame detector 14. When the alarm status is sensed, the NT26E module in the 4G - Cat1 wireless module 10 uses 4G - Cat1 to notify the cloud platform 16 to complete remote alarm, and the cloud platform 16 sends the alarm signal to the relevant mobile terminal 17 and the relevant host 18.

[0023] Embodiment 2

[0024] Reference Figure 2 , on the basis of Embodiment 1, an indicator light 13 is further provided on the circuit board 2.

[0025] There are two indicator lights 13, one is a red light and the other is a green light. When the alarm status is sensed, the NT26E module in the 4G - Cat1 wireless module 10 outputs a control signal to light up the red indicator light 13 to complete local alarm indication; when the safe status is sensed, the green indicator light 13 is in a constant - on state.

[0026] Embodiment 3

[0027] Reference Figure 1 and Figure 3 , on the basis of Embodiment 1, it further includes an explosion - proof housing 3. The circuit board 2 is arranged inside the explosion - proof housing 3. The circuit board 2 is connected with an electrical connecting wire 5, and the electrical connecting wire 5 passes into the explosion - proof housing 3 and is connected to the electrical connection interface 7.

[0028] The explosion-proof housing 3 has a barrel-shaped structure and is generally made of metal. Its upper end is open. The circuit board 2 is fixed inside the explosion-proof housing 3, which plays a protective role for the circuit board 2. The electrical connection interface 7 of the circuit board 2 is connected to the electrical connection wire 5, and the electrical connection wire 5 extends out of the explosion-proof housing 3 and is signal-connected to the flame detector 14.

[0029] Embodiment 4

[0030] Reference Figure 1 , on the basis of Embodiment 3, it further includes an antenna cover 1. The antenna cover 1 is connected to the upper port of the explosion-proof housing 3, and the upper end of the circuit board 2 extends into the antenna cover 1.

[0031] In order to prevent the explosion-proof housing 3 from shielding the signal of the ceramic antenna 12 on the circuit board 2, an antenna cover 1 is connected to the upper port of the explosion-proof housing 3. The antenna cover 1 is made of transparent glass or transparent plastic material, and the upper end of the circuit board 2 extends into the antenna cover 1 to facilitate the emission of wireless signals.

[0032] Embodiment 5

[0033] Reference Figure 1 , on the basis of Embodiment 4, it further includes a circuit board fixing seat 6. The circuit board fixing seat 6 is fixed inside the explosion-proof housing 3, and the circuit board 2 is vertically fixed in the circuit board fixing seat 6.

[0034] The circuit board fixing seat 6 has a disc-shaped structure and is made of a high-temperature resistant non-metallic material. The circuit board 2 is vertically connected in the circuit board fixing seat 6, just making the ceramic antenna 12 on the circuit board 2 extend into the antenna cover 1.

[0035] Embodiment 6

[0036] Reference Figure 1 and Figure 3 , on the basis of Embodiment 3, it further includes a positioning locking nut 4. The positioning locking nut 4 is provided on the side wall of the explosion-proof housing 3, and the positioning locking nut 4 is matched with the circuit interface on the flame detector 14.

[0037] A connection port is provided on the side wall of the explosion-proof housing 3, and the positioning locking nut 4 is arranged on the connection port. A corresponding explosion-proof male thread interface is provided on the flame detector 14. The electrical connection wire 5 extends out from the connection port and the positioning locking nut 4 and is signal-connected inside the male thread interface of the flame detector 14. The explosion-proof housing 3 can be connected to the explosion-proof interface of the flame detector 14 through the positioning locking nut 4.

[0038] Embodiment 7

[0039] In use, first unscrew the antenna cover 1 on the accessory of the present invention, insert the SIM card 11 onto the circuit board 2, and then screw on the antenna cover 1 and tighten it. Register the accessory on the fire cloud platform according to the ID number on the explosion-proof housing 3 or the circuit board 2. Cut off the power supply of the flame detector 14 and open its rear cover. Locate the positive 24V power supply, the ground 24V power supply, the normally open terminal of the relay, and the common terminal of the relay. Unscrew the explosion-proof plug of the flame detector 14, pass the electrical connection wire 5 of the accessory through the NTP1 / 2 electrical interface, and connect the four terminals in sequence according to the definition of the electrical connection of the accessory. After connection, screw the accessory onto the NTP1 / 2 electrical interface and tighten it, and then cover the rear cover of the flame detector 14. Power on the flame detector 14, and it can be seen that the green light of the accessory flashes, indicating that it is connecting to the network, and the green light stays on constantly indicating successful network connection. Conduct a simulated ignition test on the flame detector 14. When the flame detector 14 detects a fire source, the red light lights up and the relay closes. The accessory detects the relay closure, and the red indicator light 13 flashes and reports the status to the cloud platform 16 through the Cat1 base station 15. An alarm signal sent by the flame detector 14 can be seen on the cloud platform 16. Conduct a fire extinguishing test on the flame detector 14. When the flame detector 14 detects that the fire source has disappeared, the green light lights up and the relay opens. The accessory detects the relay opening, and the green indicator light 13 stays on constantly and reports the status to the cloud platform 16 through the Cat1 base station 15. The flame detector 14 can be seen to return to the normal state on the cloud platform 16. Thus, the installation and testing of the accessory are completed, and the flame detector 14 realizes the wireless data transmission function through the accessory of the present invention.

[0040] As described above, only the preferred specific embodiments of the present invention are provided, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims. The components and structures not described in detail in this embodiment are well-known components and common structures or common means in this industry, and will not be described one by one here.

Claims

1. A multi-interface wireless Cat1 accessory for flame detectors, characterized in that Comprising: A circuit board (2) is provided with an electrical connection interface (7), a power conversion module (8), a signal acquisition and processing module (9), a 4G-Cat1 wireless module (10), a SIM card (11), and a ceramic antenna (12). Among them, the power conversion module (8) obtains a DC power supply through the electrical connection interface (7), steps down the DC power supply, and supplies it to the 4G-Cat1 wireless module (10) and the signal acquisition and processing module (9) for use. After the signal acquisition and processing module (9) obtains the alarm signal of the flame detector (14) through the electrical connection interface (7), it sends the signal to the 4G-Cat1 wireless module (10). The 4G-Cat1 wireless module (10) establishes communication with the Cat1 base station (15) through the SIM card (11) and the ceramic antenna (12) to complete data interaction with the cloud platform (16).

2. The multi-interface wireless Cat1 accessory for flame detectors according to claim 1, characterized in that, An indicator light (13) is further provided on the circuit board (2).

3. The multi-interface wireless Cat1 accessory for flame detectors according to claim 1, characterized in that, It further includes an explosion-proof housing (3). The circuit board (2) is arranged inside the explosion-proof housing (3). The circuit board (2) is connected with an electrical connection wire (5), and the electrical connection wire (5) passes into the explosion-proof housing (3) and is connected to the electrical connection interface (7).

4. The multi-interface wireless Cat1 accessory for a flame detector according to claim 3, characterized in that, It further includes an antenna cover (1). The antenna cover (1) is connected to the upper port of the explosion-proof housing (3), and the upper end of the circuit board (2) extends into the antenna cover (1).

5. The multi-interface wireless Cat1 accessory for flame detectors according to claim 4, characterized in that, It further includes a circuit board fixing seat (6). The circuit board fixing seat (6) is fixed inside the explosion-proof housing (3), and the circuit board (2) is vertically fixed in the circuit board fixing seat (6).

6. The multi-interface wireless Cat1 accessory for flame detectors according to claim 3, characterized in that It further includes a positioning locking nut (4). The positioning locking nut (4) is arranged on the side wall of the explosion-proof housing (3), and the positioning locking nut (4) is matched with the line interface on the flame detector (14).

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