Compatible with cc1101/cmt2300-dp4301 sub-1g wireless transceiver chip

DP4301 The chip is a monolithic integrated transceiver with high performance and low power consumption , The working frequency can cover 470MHz~510MHz, And compatible with ISM 433MHz Frequency band . The chip integrates RF receiver 、 RF transmitter 、 Frequency synthesizer 、GFSK Modulator 、GFSK Demodulator and other functional modules . adopt SPI The interface can control the output power 、 Flexible configuration of channel selection and packet format , And built in CRC、FEC、 Automatic response and automatic retransmission mechanism , It can greatly simplify system design and optimize performance .

Functional characteristics

◆ frequency range 470~510MHz, compatible ISM 433MH Frequency band

◆ Reception sensitivity ：[email protected]

◆ Maximum output ：+20dBm

◆ Modulation mode ：FSK,GFSK

◆ data rate ：2.4kbps~200Kbps

◆ Support SPI Interface

◆ Automatic response and automatic retransmission

◆ Fast channel switching , Support frequency hopping algorithm

◆ Support RSSI function

◆ Antenna diversity sum T/R Switch control

◆ Automatic frequency control （AFC）

◆ Automatic gain control （AGC）

◆ Low operating voltage ：1.9V~3.6V

◆ 28 Pin 5*5 QFN encapsulation

Application field

◆ Smart meter reading

◆ Industrial sensors and wireless industrial control equipment

◆ Wireless game devices

◆ Remote sensing survey

◆ Security system

◆ Intelligent sports equipment

◆ Smart TV remote control

◆ Wireless tag

◆ Wireless access control

◆ Security system

◆ Remote control device

◆ Wireless toys

Fire not only endangers life safety , In serious cases, it may also cause casualties , And cause economic losses , Fire will damage the property in the building 、 equipment 、 Facilities and other items , It will also destroy the ecological environment , Destroy the forest , Destroy animal habitat .

More and more buildings with complex structures , Crowded places , Underground buildings , The emergence of dangerous goods storage places , The traditional wired alarm system cannot meet the requirements . Wireless star ad hoc networks do not need base stations and communication lines , Wide coverage , The detector can be placed in any position , There are many distribution nodes , Not subject to building conditions , Simple layout , Convenient maintenance , Lower cost , Suitable for various complex building structures , It is an effective supplement to the wired fire monitoring system .

Advantages of monitoring and alarm scheme

One 、 Wide coverage ：

Wireless star ad hoc networks do not need base stations and laying communication lines , Wide coverage , The detector can be placed in a suitable position , There are many distribution nodes , Not subject to building conditions .

Two 、 Simple layout , The cost is low ：

Just deploy the detector node at the specified position , Convenient maintenance , Lower cost , Suitable for all kinds of complex buildings .

3、 ... and 、 Strong anti-interference ability ：

470MHz Strong penetration and anti-interference , Suitable for complex structure buildings and areas with electromagnetic interference .

The content of the plan

The alarm system consists of terminal detector nodes 、 Repeater node 、 Data center node composition . Take the central node as the core , form RF 470MHz The communication network carries out wireless communication between nodes . The terminal detector node transmits the data to the repeater node , The repeater uploads the data to the data center node , The data of data center nodes can be displayed to operators through software systems .

470MHz Wireless communication unit is the core of this system , By microprocessor module 、 Wireless communication module 、 Antenna module and power module .

　　 The wireless communication module is made by our company DP4301 chip , The chip integrates RF receiver 、 RF transmitter 、 Frequency synthesizer 、GFSK Modulator 、GFSK Demodulator and other functional modules . adopt SPI The interface can control the output power 、 Flexible configuration of channel selection and packet format , And built in CRC、FEC、 Automatic response and automatic retransmission mechanism , It can greatly simplify system design and optimize performance .

The chip is a time division duplex transceiver （TDD）, Receiving and sending data packets need to be carried out alternately in different periods . High efficiency inside the chip class E power amplifier （PA）, stay +20dBm Under the condition of output power , About consumption 100mA Current .PA The output power can be in -5dBm to +20dBm Configure in scope , Configuration accuracy is about 1dB.PA The opening time of can be controlled by the internal automatic tilt rising curve to reduce PA Turn on the interference to other modules of the chip at the moment and reduce the excess spectrum spread .