CN220108214U - Dual-mode communication module and intelligent gas meter - Google Patents

Abstract

The utility model provides a dual-mode communication module and an intelligent gas meter. The dual-mode communication module comprises: the power supply control circuit is connected with the NB-IoT communication system module and the SUB-G communication system module respectively; the NB-IoT communication system module comprises a master microprocessor, is connected with a slave microprocessor in the SUB-G communication system module and is used for triggering a power control circuit to supply power to the SUB-G communication system module and transmitting the data to be uploaded to the slave microprocessor when the data to be uploaded is received and the SUB-G communication system module is determined to be adopted for data transmission; the SUB-G communication system module further includes: the system comprises a radio frequency transceiver device for converting data to be uploaded from a digital signal form to an analog signal form and a first antenna for transmitting the data to be uploaded in the analog signal form to an external device. Therefore, the efficiency, timeliness and anti-interference capability of the dual-mode communication module for transmitting data are effectively improved.

Description

Dual-mode communication module and intelligent gas meter

Technical Field

The utility model relates to the technical field of communication, in particular to a dual-mode communication module and an intelligent gas meter.

Background

With the development of the narrowband internet of things (Narrow Band Internet of Things, NB-IoT), the equipment with the internet of things function can work through an operator network, such as intelligent gas meters, water meters, smoke sensing and other internet of things equipment with the internet of things function, and the equipment can upload data acquired by the equipment to a corresponding management platform in real time or periodically through the narrowband internet of things so as to perform processing operations such as cost calculation and the like according to the data.

Although NB-IoT has advantages of low power consumption, large capacity, strong coverage, etc., it is affected by factors such as network environment and cell capacity, so that the problem that the internet of things device integrating NB-IoT cannot successfully upload the acquired data for a long time exists. In order to prevent the problem of failure to upload the collected data, it is also necessary to use a local communication technology to upload the collected data, which is not successfully uploaded, to the centralized collector through a local communication link, such as bluetooth low energy (Bluetooth Low Energy, BLE), and further upload the data to the corresponding management platform through the collector.

However, because the frequency band of BLE belongs to the open source frequency band of 2.4G wireless communication, and the frequency band belongs to the frequency band which is generally disclosed worldwide, that is, various wireless electronic products can use the frequency band for communication, so that the problem of mutual interference in the frequency band is increasingly serious, the stability and the transmission distance of communication are greatly affected, and the communication system of the 2.4G frequency band has poor wall-through effect, so that the internet of things equipment cannot upload data in time.

Disclosure of Invention

The utility model provides a dual-mode communication module and an intelligent gas meter, which are used for solving the problems that in the prior art, the data uploading of the dual-mode communication module is not timely and the wall-penetrating transmission effect is poor.

In a first aspect, the present utility model provides a dual-mode communication module, comprising: the power supply control circuit is connected with the NB-IoT communication system module and the SUB-G communication system module respectively;

the NB-IoT communication system module comprises a master microprocessor, is connected with a slave microprocessor in the SUB-G communication system module, and is used for triggering the power control circuit to supply power to the SUB-G communication system module and transmitting the data to be uploaded to the slave microprocessor when receiving the data to be uploaded and determining to transmit the data by adopting the SUB-G communication system module;

the SUB-G communication system module further includes: the radio frequency transceiver device is used for converting the data to be uploaded from a digital signal form into an analog signal form, and the first antenna is used for transmitting the data to be uploaded in the analog signal form to the external equipment.

In a preferred embodiment, the main microprocessor in the NB-IoT communication format module is further configured to determine to use the NB-IoT communication format module to perform data transmission, where the NB-IoT communication format module further includes: the wireless communication device comprises a radio frequency device for converting the data to be uploaded from a digital signal form to an analog signal form, a radio frequency switch circuit for selecting a communication frequency band required by uploading the data to be uploaded, and a second antenna for transmitting the data to be uploaded in the analog signal form to the external device according to the required communication frequency band.

In a preferred embodiment, the SUB-G communication system module further comprises: the first crystal oscillator is used for generating a first clock signal for the SUB-G communication system module under different working states;

wherein, the operating condition includes: sleep state and awake state.

In a preferred embodiment, the slave microprocessor comprises: the first serial bus port is connected with the main microprocessor and used for receiving the data to be uploaded, the communication bus port is connected with the radio frequency transceiver and used for sending the data to be uploaded, the first crystal oscillator input/output port is connected with the first crystal oscillator and used for receiving the first clock signal, and the first input power supply port is used for receiving the first input power supply voltage input by the power supply control circuit.

In a preferred embodiment, the radio frequency transceiver device comprises: and the first communication port is connected with the first antenna and is used for receiving data to be uploaded in the form of the analog signal.

In a preferred embodiment, the NB-IoT communications format module further comprises: the USIM circuit is used for providing network registration when the NB-IoT communication system module carries out data transmission, and the second crystal oscillator is used for generating a second clock signal for the NB-IoT communication system module in different working states;

Wherein, the operating condition includes: sleep state and awake state.

In a preferred embodiment, the main microprocessor comprises: the second serial bus port is connected with the slave microprocessor and used for sending the data to be uploaded, the second communication port is connected with the USIM circuit, the second crystal oscillator input/output port is connected with the second crystal oscillator and used for receiving the second clock signal, the third communication port is connected with the radio frequency device and used for sending the data to be uploaded, and the second input power supply port is used for receiving the second input power supply voltage provided by the power supply control circuit.

In a preferred embodiment, the radio frequency device comprises: a fourth communication port connected with the radio frequency switch circuit and used for receiving the communication frequency band required by the data to be uploaded;

correspondingly, the radio frequency switching circuit comprises: and the fifth communication port is connected with the second antenna and is used for receiving the data to be uploaded in the form of the analog signal.

In a preferred embodiment, the first antenna or the second antenna comprises: a first capacitor for filtering, a resistor connected with the first capacitor for limiting current, and a second capacitor connected with the resistor for filtering;

One end of the first capacitor is connected with the first communication port or the fifth communication port, the other end of the first capacitor is grounded, one end of the second capacitor is connected with one end of the resistor, and the other ends of the second capacitor and the resistor are grounded.

In a preferred embodiment, the power control circuit includes: the third input power supply voltage, a third input power supply port for receiving the third input power supply voltage, and a working voltage for controlling the power supply control circuit to work.

In a second aspect, the present utility model provides an intelligent gas meter, comprising: comprising a dual mode communication module as claimed in any preceding claim.

The utility model provides a dual-mode communication module and an intelligent gas meter, wherein the dual-mode communication module comprises a power supply control circuit, and an NB-IoT communication system module and a SUB-G communication system module which are respectively connected with the power supply control circuit; the NB-IoT communication system module comprises a master microprocessor, is connected with a slave microprocessor in the SUB-G communication system module, and is used for triggering the power control circuit to supply power to the SUB-G communication system module and transmitting the data to be uploaded to the slave microprocessor when receiving the data to be uploaded and determining to transmit the data by adopting the SUB-G communication system module; the SUB-G communication system module further includes: the radio frequency transceiver device is used for converting the data to be uploaded from a digital signal form into an analog signal form, and the first antenna is used for transmitting the data to be uploaded in the analog signal form to the external equipment. Compared with the prior art, when the main microprocessor determines that the NB-IoT communication system module which performs data transmission by means of the network cannot perform data uploading processing, the main microprocessor disconnects relevant devices of the NB-IoT communication system module and conducts the SUB-G communication system module connected with the NB-IoT communication system module, namely the SUB-G communication system module is used for communication, the frequency used by the SUB-G communication system module is lower than 1GHz and is generally 27 MHz-960 MHz, and the frequency band can be regarded as ideal choice of long-distance and low-power consumption communication. Compared with the frequency band 2.4GHz adopted by the existing local communication system module, the Sub-G communication system module has obvious advantages, including more distant transmission range, strong anti-interference performance, better wall penetrating capability and the like.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the utility model and together with the description, serve to explain the principles of the utility model.

Fig. 1 is a schematic structural diagram of a dual-mode communication module according to a first embodiment of the present utility model;

fig. 2 is a schematic structural diagram of a dual-mode communication module according to a second embodiment of the present utility model;

fig. 3 is a schematic structural diagram of a dual-mode communication module according to a third embodiment of the present utility model;

fig. 4 is a schematic structural diagram of a dual-mode communication module according to a fourth embodiment of the present utility model;

fig. 5 is a schematic structural diagram of a dual-mode communication module according to a fifth embodiment of the present utility model;

fig. 6 is a schematic structural diagram of a dual-mode communication module according to a sixth embodiment of the present utility model;

fig. 7 is a schematic structural diagram of a dual-mode communication module according to a seventh embodiment of the present utility model;

fig. 8 is a schematic structural diagram of an eighth embodiment of a dual-mode communication module according to the present utility model;

fig. 9 is a schematic structural diagram of a dual-mode communication module according to a ninth embodiment of the present utility model;

fig. 10 is a schematic structural diagram of a dual-mode communication module according to a tenth embodiment of the present utility model.

Reference numerals:

1: a dual mode communication module;

10: a power supply control circuit;

20: NB-IoT communication system modules;

30: a SUB-G communication system module;

201: a main microprocessor;

202: a radio frequency device;

203: a radio frequency switching circuit;

204: a USIM circuit;

205: a second antenna;

n2: a second crystal oscillator;

n2: a second clock signal;

301: a slave microprocessor;

302: a radio frequency transceiver device;

303: a first antenna;

n1: a first crystal oscillator;

n1: a first clock signal;

c2: a first capacitor;

and C3: a second capacitor;

r1: a resistor;

power1: a first input power supply voltage;

power2: a second input power supply voltage;

power3: a third input power supply voltage;

d1: a first communication port;

d2: a second communication port;

d3: a third communication port;

d4: a fourth communication port;

d5: a fifth communication port;

SPI: a communication bus port;

USART: a first serial bus port;

USART1: a second serial bus port;

vcc1: a first input power port;

vcc2: a second input power port;

vcc3: a third input power port;

vdd: an operating voltage;

x1: a first crystal oscillator input/output port;

x2: a second crystal oscillator input/output port;

GND: and (5) grounding.

Detailed Description

First, it should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present utility model, and are not intended to limit the scope of the present utility model. Those skilled in the art can make adjustments as needed to suit a particular application.

Further, it should be noted that, in the description of the embodiments of the present utility model, terms such as directions or positional relationships indicated by the terms "inner", "outer", and the like are based on directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the apparatus or the component must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, it should be noted that, in the description of the embodiments of the present utility model, unless explicitly specified and limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be the communication between the two components. The specific meaning of the above terms in the embodiments of the present utility model can be understood by those skilled in the art according to the specific circumstances.

It should be noted that, in the description of the present embodiment, the terms "front end", "rear end", "one end" and "other end" are merely used to distinguish two ends of the wire harness, and when one of the end points is defined as the "front end" or the "rear end", the other end is defined as the "rear end" or the "front end", and the same understanding manner can be adopted for the "one end" and the "other end", and the present utility model uses the left direction of the wire harness as the front end and the right direction of the wire harness as the rear end as an example, but is not limited thereto.

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Along with popularization of intelligent internet of things equipment and development of the narrow bandwidth internet of things, the intelligent internet of things equipment can work by means of an operator network, such as an intelligent gas meter, a water meter and the like, and user usage data can be periodically or timely uploaded to a corresponding cloud platform, such as a management platform, so that manual meter reading and counting processes of technicians are avoided, the users are greatly facilitated, and how to accurately upload the data of the intelligent internet of things equipment to the cloud platform in real time becomes a hotspot for research of technicians in the field.

In the prior art, a narrow bandwidth internet of things chip NB-IoT is generally set in the intelligent internet of things device to implement data reporting processing work by using an operator network, however, due to the influence of factors such as an operator network environment, cell capacity, concurrency and the like, the intelligent internet of things device may not report own data to the cloud platform for a long time. Based on this, a person skilled in the art encapsulates another chip BLE for implementing data transmission with a local communication link at NB-IoT of the intelligent internet of things device, so as to upload the data into the centralized collector, which in turn can upload the data to the cloud.

However, in the prior art, the communication frequency band of the BLE for assisting the intelligent internet of things data uploading belongs to the 2.4G wireless communication open source frequency band. It is known that 2.4GHz wireless communication is used as an open source, and is a worldwide public wireless frequency band, and various wireless products can use the frequency band, such as WiFi in offices or families, various wireless bluetooth devices, and even microwave ovens in kitchens, etc. With the increase of the application quantity of the wireless products, when a plurality of wireless devices are used simultaneously within a certain range, the problem of mutual interference of 2.4G frequency bands can occur, and the stability and the transmission distance of communication are greatly affected. On the other hand, due to the poor wall-through effect of the communication system of the 2.4G frequency band, when the intelligent internet of things device is arranged in a closed space, such as a room cabinet or a basement of many families, it is difficult to upload data to the cloud or the data cannot be uploaded to the cloud in time.

Based on the technical problems, the utility model is characterized in that: how to realize the dual-mode communication module with stronger wall-through effect, high data uploading efficiency and timeliness.

The principles and features of embodiments of the present utility model are described below with reference to the drawings, the examples are provided for the purpose of illustrating the embodiments of the present utility model and are not intended to limit the scope of the embodiments of the present utility model.

The following describes embodiments of the present utility model in detail by way of specific examples. It should be noted that the following embodiments may be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.

Fig. 1 is a schematic structural diagram of a dual-mode communication module according to a first embodiment of the present utility model. As shown in fig. 1, the dual-mode communication module 1 includes: the power control circuit 10, the NB-IoT communication system module 20 and the SUB-G communication system module 30 respectively connected with the power control circuit 10. The NB-IoT communication system module 20 includes a master microprocessor 201, and the master microprocessor 201 is connected to a slave microprocessor 301 in the SUB-G communication system module 30, and is configured to trigger the power control circuit 10 to supply power to the SUB-G communication system module 30 and send the data to be uploaded to the slave microprocessor 301 when receiving the data to be uploaded and determining that the SUB-G communication system module 30 is adopted for data transmission.

In addition, the SUB-G communication system module 30 includes: a radio frequency transceiver 302 for converting the data to be uploaded from a digital signal form to an analog signal form, and a first antenna 303 for transmitting the data to be uploaded in the analog signal form to an external device.

It should be noted that the dual-mode communication module provided by the utility model can be integrated on a printed circuit board (Printed Circuit Board, PCB), and the printed circuit board can be arranged on an intelligent internet of things device, such as an intelligent gas meter, but is not limited to other specific implementation modes.

In this embodiment, the power control circuit 10 is used for powering the dual-mode communication module of this embodiment, and is mainly responsible for powering the main microprocessor 201, and then the main microprocessor 201 performs power-on control on related components of the NB-IoT communication system module 20 and the SUB-G communication system module 30 in the dual-mode communication module.

It is conceivable that the current intelligent internet of things device can upload its own data to an external device, such as a cloud platform, according to a preset period or in real time, and also can upload its own data to the cloud platform or a centralized collector after receiving an instruction for uploading data. The self data is the data to be uploaded.

Optionally, the main microprocessor 201 may feed back a signal to the main microprocessor 201 according to whether the current intelligent internet of things device reports data successfully, that is, when the intelligent internet of things device uploads data successfully, where the signal is used to mark whether the data upload is successful, if the signal value 1 indicates that the data upload is successful, the signal value 0 indicates that the data upload is unsuccessful.

For example, assuming that the communication system module adopted by the current uploading data is the NB-IoT communication system module 20, the main microprocessor 201 determines whether the NB-IoT communication system module 20 or the SUB-G communication system module 30 should be used currently according to the received signal, if the received signal value is 1, it is determined that the current adopted communication module is the NB-IoT communication system module 20, and the main microprocessor 201 further continuously controls the intelligent internet of things device to upload data using the module. If the received signal value is 0 and the currently adopted communication module is the NB-IoT communication system module 20, if the uploading of the data is unsuccessful, the main microprocessor 201 will control the intelligent internet of things device to adopt the SUB-G communication system module 30 for data uploading.

When the main microprocessor 201 finds that the NB-IoT communication system module 20 cannot upload data, the SUB-G communication system module 30 is immediately adopted to upload data, and at this time, the main microprocessor 201 supplies power to the SUB-G communication system module 30 by controlling the power control circuit and sends the data to be uploaded to the slave microprocessor 301 of the SUB-G communication system module 30.

Correspondingly, after receiving the data to be uploaded from the microprocessor 301, the data to be uploaded is sent to the radio frequency transceiver 302 connected with the microprocessor 301, the radio frequency transceiver 302 is triggered to convert the data form of the data to be uploaded into a transmittable data form, optionally, the data generated inside the general intelligent internet of things equipment are all in digital signal form, after being processed by the radio frequency transceiver 302, the data to be uploaded in digital signal form can be converted into the data to be uploaded in analog signal form, so that the data can be sent out, that is, the microprocessor 301 can trigger the first antenna 303 to send the data to be uploaded in analog signal form to the external equipment, so that the uploading of the data is realized.

Then, the slave microprocessor 301 receives the feedback signal of the uploading data sent by the external device from the first antenna 303, converts the feedback signal in the form of an analog signal into the feedback signal in the form of a digital signal by using the radio frequency transceiver 302, and sends the feedback signal in the form of the digital signal to the master microprocessor 201, so as to confirm the communication system module adopted by the next uploading data.

In an alternative embodiment, the radio frequency transceiver device 302 integrates a transmitter, receiver, modem and baseband processing devices. The transmitter and the receiver can be used for interactive data processing with external equipment, and the devices of the modem and the baseband processing are mainly used for conversion processing of digital signals and analog signals.

In this embodiment, a structure of a dual-mode communication module is specifically illustrated, and the dual-mode communication module 1 includes: a source control circuit 10, an NB-IoT communication system module 20 and a SUB-G communication system module 30 respectively connected with the power control circuit; the NB-IoT communication system module 20 includes a master microprocessor 201 connected to the slave microprocessor 301 in the SUB-G communication system module 30, and configured to trigger the power control circuit 10 to supply power to the SUB-G communication system module 30 and send the data to be uploaded to the slave microprocessor 301 when receiving the data to be uploaded and determining that the SUB-G communication system module 30 is adopted for data transmission; correspondingly, the SUB-G communication system module 30 further includes: a radio frequency transceiver 302 for converting the data to be uploaded from a digital signal form to an analog signal form, and a first antenna 303 for transmitting the data to be uploaded in the analog signal form to an external device. Compared with the prior art, the embodiment adopts the SUB-G communication system module 30 and the NB-IoT communication system module 20 to realize the dual-mode communication module. In this embodiment, a control manner of independently operating hardware devices corresponding to an NB-IoT communication system and a SUB-G communication system may be adopted, and when the main microprocessor 201 controls the intelligent internet of things device to communicate with a certain communication system module, hardware corresponding to the communication system module is controlled to be started, and at the same time, hardware corresponding to another communication system module is controlled to be in a power-off state, so that power consumption of the dual-mode communication module may be reduced; in addition, the local communication system module SUB-G communication system module 30 provided in this embodiment can resist interference when wireless electronic devices around the intelligent internet of things device communicate, and based on SUB-G self characteristics, the wall-penetrating effect is better when using local communication, so that the efficiency, timeliness and anti-interference capability of the dual-mode communication module for transmitting data can be improved.

The NB-IoT communication system module 20 in the dual-mode communication module 1 is further explained with reference to fig. 2. Fig. 2 is a schematic structural diagram of a dual-mode communication module according to a second embodiment of the present utility model, as shown in fig. 2, the NB-IoT communication system module 20 includes:

the wireless communication device comprises a radio frequency device 202 for converting data to be uploaded from a digital signal form to an analog signal form, a radio frequency switch circuit 203 for selecting a communication frequency band required for uploading the data to be uploaded, and a second antenna 205 for transmitting the data to be uploaded in the analog signal form to an external device according to the required communication frequency band.

In this embodiment, when the main microprocessor 201 in the NB-IoT communication system module 20 determines to transmit data using the NB-IoT communication system module 20, the main microprocessor 201 sends the data to be uploaded to the rf device 202, and converts the digital signal form of the data to be uploaded into the form of the analog signal capable of being sent by using the rf device 202. Optionally, the rf device 202 may also include an rf device such as a transmitter, a receiver, a modem, and a filter, which are similar to those of the rf transceiver 302, and will not be repeated here.

Then, the main microprocessor 201 triggers the second antenna 205 to send the data to be uploaded in the form of an analog signal to the external device, and then receives an upload data feedback signal fed back from the external device within a preset time to determine a communication system module used for uploading the data next time.

In this embodiment, the specific structure of the NB-IoT communication system module 20 and the data interaction process when the NB-IoT communication system module 20 uploads data are specifically described. Compared with the prior art, the dual-mode communication module provided by the embodiment can adopt the NB-IoT communication system module 20 for data transmission when the communication network state is good, so as to achieve the effect of fast uploading data.

The structure of the SUB-G communication system module 30 in the dual-mode communication module 1 will be further explained with reference to fig. 3. Fig. 3 is a schematic structural diagram of a dual-mode communication module according to a third embodiment of the present utility model, as shown in fig. 3, the SUB-G communication system module 30 includes:

a first crystal oscillator N1 for generating a first clock signal N1 for the SUB-G communication system module 30 under different working conditions; wherein, the operating condition includes: sleep state and awake state.

In this embodiment, considering that the clock signal is required to trigger when the intelligent internet of things device performs data communication, the SUB-G communication system module 30 further includes a first crystal oscillator N1 for generating the first clock signal N1 in different working states, and the working power consumption of the intelligent internet of things device is inconsistent based on the different working states, so that different clock signals can be adopted in the different working states.

Optionally, the first crystal oscillator N1 may be a 32K crystal oscillator and a 26M crystal oscillator, and when the SUB-G communication system module 30 is in the wake-up state, the slave microprocessor 301 generates a clock signal by using the 26M crystal oscillator; when the SUB-G communication system module 30 is in a sleep state, the slave microprocessor 301 generates a clock signal by using a 32K crystal oscillator.

The structure of the slave microprocessor 301 in the dual-mode communication module 1 is further described below with reference to fig. 4. Fig. 4 is a schematic structural diagram of a dual-mode communication module according to a fourth embodiment of the present utility model, as shown in fig. 4, the slave microprocessor 301 includes:

the first serial bus port USART connected to the main microprocessor 201 and used for receiving data to be uploaded, the communication bus port SPI connected to the radio frequency transceiver 302 and used for transmitting data to be uploaded, the first crystal oscillator input/output port X1 connected to the first crystal oscillator N1 and used for receiving the first clock signal N1, and the first input power supply port vcc1 used for receiving the first input power supply voltage power1 input by the power supply control circuit 10.

In this embodiment, the slave microprocessor 301 is the main control device of the SUB-G communication system module 30, but the slave microprocessor 301, as a slave control center, is controlled by the master microprocessor 201, and can be understood as: the operation mode of the dual-mode communication module provided in this embodiment is controlled by the main microprocessor 201.

The slave microprocessor 301 should have a first serial bus port USART connected to the master microprocessor 201, corresponding to the connection structure of the slave microprocessor 301, through which the slave microprocessor 301 can obtain communication data transmitted from the slave microprocessor 201, such as data to be uploaded, instruction information, etc.

After receiving the data to be uploaded from the microprocessor 301, the data to be uploaded is sent to the radio frequency transceiver 302 for processing, optionally, the data to be uploaded is sent to the radio frequency transceiver 302 from the microprocessor 301 through the communication bus port SPI, the radio frequency transceiver 302 is triggered to perform conversion processing on a signal form of the data to be uploaded, that is, the data to be uploaded in a digital signal form is converted into the data to be uploaded in an analog signal form, and then the data to be uploaded in the analog signal form is sent out through the first antenna 303.

The slave microprocessor 301 further has a first crystal input/output port X1 for connecting to the first crystal N1 so as to receive a first clock signal N1 provided by the first crystal N1.

It is conceivable that in the present embodiment, when the slave microprocessor 301 does not receive the data to be uploaded sent by the master microprocessor 201, that is, when the SUB-G communication system module is in the sleep state, the first clock signal n1 received from the slave microprocessor 301 is provided by the 32K crystal oscillator. When the slave microprocessor 301 receives the data to be uploaded sent by the master microprocessor 201, that is, when the SUB-G communication system module is in the awake state, the first clock signal n1 received by the slave microprocessor 301 is provided by the 26M crystal oscillator.

Optionally, the working mechanism of the SUB-G communication system module 30 may be: when the main microprocessor 201 determines that the NB-IoT communication system module 20 is currently adopted, the main microprocessor 201 may control the power control circuit 10 to perform the power-down process on the SUB-G communication system module 30, and all components of the SUB-G communication system module 30 are in the power-down state.

It is noted that the SUB-G communication system module needs the power supply control circuit 10 to supply power so as to conduct all the components thereof for data transmission processing according to the supplied power. Accordingly, when the master microprocessor 201 determines that the SUB-G communication system module 30 is adopted for data transmission, the first input power supply voltage power1 input by the power supply control circuit 10 can be received from the first input power supply port vcc1 on the slave microprocessor 301.

In this embodiment, a connection structure between the slave microprocessor 301 and other devices in the SUB-G communication system module 30 is specifically illustrated, and based on the working principle under the connection structure, the dual-mode communication module 1 can upload data to be uploaded to an external device by using a local communication mode, and based on the communication frequency band adopted by the SUB-G communication system module 30 is less than 1GHZ, the data uploading process can avoid interference of other wireless electronic devices, so that data can be uploaded timely and efficiently, and a good wall penetrating effect can be realized in a closed environment.

The structure of the rf transceiver 302 in the dual-mode communication module 1 is further described below with reference to fig. 5. Fig. 5 is a schematic structural diagram of a dual-mode communication module according to a fifth embodiment of the present utility model, as shown in fig. 5, the radio frequency transceiver 302 includes:

a first communication port D1 connected to the first antenna 303 and adapted to receive data to be uploaded in the form of an analog signal.

In this embodiment, after the radio frequency transceiver 302 performs conversion processing on the data to be uploaded in the form of digital signals and analog signals, the converted data to be uploaded is transmitted to the first antenna 303 through the first communication port D1 inside the radio frequency transceiver, and then the first antenna 303 uploads the converted data to be uploaded to the external device.

The structure of the NB-IoT communication system module 20 in the dual-mode communication module 1 is further described with reference to fig. 6. Fig. 6 is a schematic structural diagram of a dual-mode communication module according to a sixth embodiment of the present utility model, as shown in fig. 6, an NB-IoT communication system module 20 further includes:

USIM circuit 204 for providing network registration when NB-IoT communication system module 20 performs data transmission, and second crystal oscillator N2 for generating second clock signal N2 for NB-IoT communication system module 20 in different operation states; wherein, the operating condition includes: sleep state and awake state.

In this embodiment, the data uploading mode of the NB-IoT communication system module 20 mainly depends on the frequency band of the communication network, and the communication network performs network registration processing on the communication network after the intelligent internet of things device is started, so that the NB-IoT communication system module 20 has a network capable of uploading data to be uploaded.

Accordingly, the NB-IoT communications format module 20 should also include USIM circuitry 204 for network registration.

In view of the fact that the NB-IoT communication system module 20 also requires the triggering of the clock signal when performing the data transmission process and other data processing operations, the NB-IoT communication system module 20 further comprises a second crystal N2 for generating the second clock signal N2.

Optionally, the second crystal N2 includes: the working principles of the 32K crystal oscillator and the 26M crystal oscillator are similar to those of the first crystal oscillator N1, and the repeated description is omitted here.

It is noted that the crystal oscillators used by the NB-IoT communication system module 20 and the SUB-G communication system module 30 may be the same crystal oscillator or different crystal oscillators.

For example, when the intelligent internet of things device adopts the NB-IoT communication system module 20 to perform the working process, the first crystal oscillator N1 may start the 26M crystal oscillator, and the second crystal oscillator N2 of the SUB-G communication system module 30 may not start or start the 32K crystal oscillator; when the intelligent Internet of things equipment is only in a standby state, the first crystal oscillator N1 and the second crystal oscillator N2 can simultaneously adopt the 32K crystal oscillator so as to maintain the working requirements of the intelligent Internet of things equipment.

The embodiment further illustrates the specific connection structure of the NB-IoT communication system module 20 and the working mechanism of each device under the connection structure based on the second embodiment.

The structure of the main microprocessor 201 in the dual-mode communication module 1 is further described below with reference to fig. 7. Fig. 7 is a schematic structural diagram of a dual-mode communication module according to a seventh embodiment of the present utility model, as shown in fig. 7, a main microprocessor 201 includes:

The second serial bus port USART1 connected to the slave microprocessor 301 and used for transmitting data to be uploaded, the second communication port D2 connected to the USIM circuit 204, the second crystal N2 input/output port X2 connected to the second crystal N2 and used for receiving the second clock signal N2, the third communication port D3 connected to the radio frequency device 202 and used for transmitting data to be uploaded, and the second input power port vcc2 used for receiving the second input power voltage power2 provided by the power control circuit 10.

In this embodiment, the master microprocessor 201 may be communicatively connected to the slave microprocessor 301 through a second serial bus port USART1 therein, and may transmit data to the slave microprocessor 301 and may also receive data uploaded from the slave microprocessor 301 through the second serial bus port USART 1.

In addition, the main microprocessor 201 further includes a second communication port D2 connected to the USIM circuit 204 for network registration, and the main microprocessor 201 can obtain a prompt message indicating whether the network registration is successful through D2, and after receiving the message indicating that the registration is successful through D2, the main microprocessor 201 can control the NB-IoT communication system module 20 to upload data, and after receiving the message indicating that the registration is unsuccessful, which is transmitted by D2, the main microprocessor 201 further needs to trigger the USIM circuit 204 to re-perform the network registration.

The main microprocessor 201 further includes a second crystal input/output port X2 for receiving the second clock signal N2 generated by the second crystal oscillator N2, and when the main microprocessor 201 controls the NB-IoT communication system module 20 to upload data, it can acquire the second clock signal for the wake-up state generated by the 26M crystal oscillator through the second crystal oscillator input/output port X2; when the main microprocessor 201 controls the SUB-G communication system module 30 to upload data, it can obtain the second clock signal for sleep state generated by the 32K crystal oscillator through the second crystal oscillator input/output port X2.

It should be noted that the main microprocessor stores a real-time operating system rosa to control the dual-mode communication module to perform data communication processing.

It should be noted that the main microprocessor 201 should also have a power supply voltage that works, optionally, the main microprocessor 201 has a second input power supply port vcc2, through which the second input power supply voltage power2 provided by the power supply control circuit 10 can be received, and the USIM circuit 204, the radio frequency device 202 and the radio frequency switch circuit 203 are turned on immediately after receiving the second input power supply voltage power 2.

In this embodiment, the connection structure of the main microprocessor 201 in the NB-IoT communication system module 20 and the operation mechanism of the internal connection device thereof during data transmission are specifically explained.

The connection structure of the rf device 202 in the dual-mode communication module 1 is further described below with reference to fig. 8. Fig. 8 is a schematic structural diagram of an embodiment eight of the dual-mode communication module provided by the present utility model, as shown in fig. 8, a radio frequency device 202, including:

a fourth communication port D4 connected to the rf switch 203 and configured to receive a communication band required for data to be uploaded; accordingly, the radio frequency switching circuit 203 includes: connected to the second antenna 205 is a fifth communication port D5 for receiving data to be uploaded in the form of analog signals.

In this embodiment, the radio frequency device 202 in the NB-IoT communication system module 20 for receiving and transmitting data and converting the received and transmitted data into digital signals and analog signals is connected to the radio frequency switch circuit 203, so that the radio frequency device 202 can acquire a communication frequency band required for receiving and transmitting the data after signal form conversion. Based on this, a fourth communication port D4 connected to the radio frequency switch circuit 203 is provided inside the radio frequency device 202 to acquire a communication frequency band required for communication through the fourth communication port D4.

Accordingly, the rf switch 203 further transmits the communication frequency band required for communication to the second antenna 205, so that the communication data can be transmitted to the external device through the second antenna 205. And the fifth communication port D5 is disposed inside the rf switch circuit 203 and is used for connecting the second antenna 205 and transmitting the communication frequency band required for communicating data to the second antenna 205, thereby completing the data communication process, such as the data uploading process.

The embodiment specifically illustrates a specific connection structure of the radio frequency device 202 in the NB-IoT communication system module 20 and an internal connection structure of the radio frequency switch circuit 203, and based on the connection structure, communication processing of data can be achieved.

The connection structure of the first antenna 303 and the second antenna 205 in the dual-mode communication module 1 is further explained by fig. 9. Fig. 9 is a schematic structural diagram of a dual-mode communication module according to a ninth embodiment of the present utility model, as shown in fig. 9, the first antenna 303 and the second antenna 205 respectively include:

a first capacitor C2 for filtering, a resistor R1 connected with the first capacitor C2 for limiting current, and a second capacitor C3 connected with the resistor R1 for filtering; one end of the first capacitor C2 is connected to the first communication port D1 or the fifth communication port D5, the other end of the first capacitor C2 is grounded GND, one end of the second capacitor C3 is connected to one end of the resistor R1, and both the other ends of the second capacitor C3 and the resistor R1 are grounded GND.

The first capacitor C2, the second capacitor C3, and the resistor R1 in the first antenna 303 and the second antenna 205 form a pi-type circuit, so as to eliminate noise, high-frequency clutter, and other unnecessary electronic signals in the communication data, thereby ensuring the quality of the communication data.

When the NB-IoT communication system module 20 performs data communication, the NB-IoT communication system module 20 and the second antenna 205 are in a conductive state, and the first antenna 303 of the SUB-G communication system module 30 is in a power-down state; similarly, when the SUB-G communication mode 30 is in data communication, the first antenna 303 is in the on state, and the second antenna 205 of the NB-IoT communication mode 20 is in the power-down state. Then, the main microprocessor 201 can realize time-sharing control to realize that the two communication system modules can independently operate.

In this embodiment, it is specifically explained that the NB-IoT communication system module 20 and the SUB-G communication system module 30 use respective antennas to perform data communication, and based on the structure of the dual-mode communication module, it is known that the NB-IoT communication system module 20 and the SUB-G communication system module adopt a hardware link isolation scheme, that is, only a hardware link corresponding to one communication system module is substantially started at the same time, thereby fundamentally solving the interference problem between dual-mode communications in the prior art.

The connection structure of the power control circuit 10 in the dual-mode communication module 1 is further explained by fig. 10. Fig. 10 is a schematic structural diagram of a dual-mode communication module according to an embodiment of the present utility model, and as shown in fig. 10, the power control circuit 10 includes:

A third input power supply voltage power3, a third input power supply port vcc3 for receiving the third input power supply voltage power3, and an operating voltage vdd for controlling the operation of the power supply control circuit.

When the intelligent internet of things device is powered on, after receiving the third input power voltage power3 of the external device, the power control circuit 10 immediately converts the third input power voltage power3 into a working voltage vdd suitable for self-operation, and inputs the working voltage vdd to the master microprocessor 201 or the slave microprocessor 301, that is, the working voltage vdd is used as the second input power voltage power2 of the master microprocessor 201 or the first input power voltage power1 of the slave microprocessor 301, so that the powered on master microprocessor 201 or the slave microprocessor 301 performs data uploading processing.

It can be understood that the power control circuit 10 is used as an energy source provider when the dual-mode communication module 1 works, and the third input power voltage power3 can be an energy source which is connected to a power source or can be provided by a storage battery, and after the power source is lost through components in the power control circuit 10, the working voltage of the power control circuit 10 is maintained, or the voltage continuously output by the power control circuit 10 is formed.

Based on this, the description of the device connection structure inside the dual-mode communication module is completed.

In summary, the SUB-G communication system module 30, that is, the SUB-G communication system module 30, has very low power consumption, because the communication module hardware links are very simple, and the control links are very short and the response time is fast, the SUB-G communication system module 30 can be quickly dormant after the data communication task is completed, so as to achieve the purpose of extremely consuming current.

Compared with the prior art, for a structure that two sets of common NB-IoT communication system modules and BLE communication system modules are started simultaneously, different modes are switched through software and hardware links, when a scene of BLE communication system use is needed, the software and hardware links of the NB-IoT communication system are applied, the links are relatively huge, the software and hardware responses are slow, the dormancy wakeup time is long, the dormancy current is high, and the power consumption performance is poor. When the NB-IoT communication system module is independently started, the interference of a Sub-G communication system function system is avoided, and the power consumption is equivalent to that of a single NB-IoT communication system module, so that the optimal effect is achieved. In addition, the Sub-G communication system module used in the utility model can realize better wall penetrating effect due to the advantages of the Sub-G communication system module, so that the technical effect of effectively uploading data in time can be achieved.

It should be noted that the NB-IoT communication system module 20 and the Sub-G communication system module 30 may select the default activation mode by hardware. In actual use, the user can select to use local communication or remote communication by default according to the product requirement, so that the optimal effect of the product is achieved.

The utility model also provides an intelligent gas meter, which comprises the dual-mode communication module according to any embodiment.

It should be noted that the above-mentioned alternative embodiments are only examples provided by the present utility model, but the dual-mode communication module provided by the present utility model may be applicable to any device having an internet of things function.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features can be replaced equivalently; such modifications and substitutions do not depart from the spirit of the utility model.

Claims (11)

1. A dual-mode communication module, comprising: the power supply control circuit is connected with the NB-IoT communication system module and the SUB-G communication system module respectively;

the NB-IoT communication system module comprises a master microprocessor, is connected with a slave microprocessor in the SUB-G communication system module, and is used for triggering the power control circuit to supply power to the SUB-G communication system module and transmitting the data to be uploaded to the slave microprocessor when receiving the data to be uploaded and determining to transmit the data by adopting the SUB-G communication system module;

the SUB-G communication system module further includes: the radio frequency transceiver device is used for converting the data to be uploaded from a digital signal form into an analog signal form, and the first antenna is used for transmitting the data to be uploaded in the analog signal form to the external equipment.

2. The dual-mode communication module of claim 1, wherein the master microprocessor in the NB-IoT communication format module is further configured to determine to employ the NB-IoT communication format module for data transmission, the NB-IoT communication format module further comprising: the wireless communication device comprises a radio frequency device for converting the data to be uploaded from a digital signal form to an analog signal form, a radio frequency switch circuit for selecting a communication frequency band required by uploading the data to be uploaded, and a second antenna for transmitting the data to be uploaded in the analog signal form to the external device according to the required communication frequency band.

3. The dual-mode communication module of claim 2, wherein the SUB-G communication system module further comprises: the first crystal oscillator is used for generating a first clock signal for the SUB-G communication system module under different working states;

wherein, the operating condition includes: sleep state and awake state.

4. The dual-mode communication module of claim 3, wherein the slave microprocessor comprises: the first serial bus port is connected with the main microprocessor and used for receiving the data to be uploaded, the communication bus port is connected with the radio frequency transceiver and used for sending the data to be uploaded, the first crystal oscillator input/output port is connected with the first crystal oscillator and used for receiving the first clock signal n1, and the first input power supply port is used for receiving the first input power supply voltage input by the power supply control circuit.

5. The dual-mode communication module of claim 4, wherein the radio frequency transceiver device comprises: and the first communication port is connected with the first antenna and is used for receiving data to be uploaded in the form of the analog signal.

6. The dual-mode communication module of claim 5, wherein the NB-IoT communication format module further comprises: the USIM circuit is used for providing network registration when the NB-IoT communication system module carries out data transmission, and the second crystal oscillator is used for generating a second clock signal for the NB-IoT communication system module in different working states;

Wherein, the operating condition includes: sleep state and awake state.

7. The dual-mode communication module of claim 6, wherein the main microprocessor comprises: the second serial bus port is connected with the slave microprocessor and used for sending the data to be uploaded, the second communication port is connected with the USIM circuit, the second crystal oscillator input/output port is connected with the second crystal oscillator and used for receiving the second clock signal, the third communication port is connected with the radio frequency device and used for sending the data to be uploaded, and the second input power supply port is used for receiving the second input power supply voltage provided by the power supply control circuit.

8. The dual-mode communication module of claim 7, wherein the radio frequency device comprises: a fourth communication port connected with the radio frequency switch circuit and used for receiving the communication frequency band required by the data to be uploaded;

correspondingly, the radio frequency switching circuit comprises: and the fifth communication port is connected with the second antenna and is used for receiving the data to be uploaded in the form of the analog signal.

9. The dual-mode communication module of claim 8, wherein the first antenna or the second antenna comprises: a first capacitor for filtering, a resistor connected with the first capacitor for limiting current, and a second capacitor connected with the resistor for filtering;

One end of the first capacitor is connected with the first communication port or the fifth communication port, the other end of the first capacitor is grounded, one end of the second capacitor is connected with one end of the resistor, and the other ends of the second capacitor and the resistor are grounded.

10. The dual-mode communication module of claim 1 or 2, wherein the power control circuit comprises: the third input power supply voltage, a third input power supply port for receiving the third input power supply voltage, and a working voltage for controlling the power supply control circuit to work.

11. An intelligent gas meter comprising a dual-mode communication module according to any one of claims 1 to 10.