CN210670573U - Communication terminal and electricity collection equipment - Google Patents

Abstract

The utility model relates to a communication terminal and electricity collection equipment. A communication terminal comprises a communication module, a card change-over switch, a plurality of card slots and a power supply; the card slot is used for loading an SIM card and is connected with the card changeover switch; the power supply is used for supplying power to the communication module; the card change-over switch is used for connecting one of the card slots and is connected with the communication module. When the communication terminal provided by the utility model is used, the sum of a plurality of cards is automatically compared in the equipment opening stage, and then the card with the best signal quality is selected to be connected with the communication module, so that the purpose of increasing the communication quality is realized, and the communication terminal has obvious cost advantage compared with a multi-card multi-standby terminal; compared with a single-card single-standby terminal, the method can flexibly select a communication network with better quality for communication, and is a great progress in the field.

Description

Communication terminal and electricity collection equipment

Technical Field

The utility model relates to an electricity collection equipment communication especially relates to a communication terminal and electricity collection equipment.

Background

There are three operators (mobile, internet, telecommunication) in our country, and the communication networks of the operators cannot be interconnected. Because the network layout of each operator is different, the network signal strength of different operators in the same place may be different, and the network signal quality of each operator at different time may also be changed due to the change of the field environment; it is also a requirement of the user how to select the operator with the best signal quality for communication.

At present, the communication mode that general communication used is that two cards are two to treat or three cards are three to treat, and this has the convenience to a certain extent, but in electric collection equipment's communication field, often is little to the mode demand that many cards were treated more, as long as can satisfy electric collection equipment's information can accept and send can, but can not install single draw-in groove or single operator again, still guarantee that the external communication quality of electric collection equipment all keeps the best always. In addition, the existing three-card three-standby terminal needs to integrate three sets of communication systems, and the complexity and the cost are high, namely the cost is high.

Patent document No. 201711212736.5 discloses a communication module of a smart meter and a smart meter, which performs communication work in a manner that a main control chip is integrated with the communication module, but the above-mentioned problems cannot be solved yet.

Therefore, the defects exist in the field, and the utility model people need to innovate and implement the utility model.

SUMMERY OF THE UTILITY MODEL

In view of the foregoing prior art's weak point, the utility model aims to provide a communication terminal and electricity collection equipment selects the best of signal quality to communicate in a plurality of communication cards, and the communication quality of guarantee system compares many cards and treats the terminal and can reduce communication cost more.

In order to achieve the purpose, the utility model adopts the following technical proposal:

a communication terminal comprises a communication module, a card change-over switch, a plurality of card slots and a power supply;

the card slot is used for loading an SIM card and is connected with the card changeover switch;

the power supply is used for supplying power to the communication module;

the card change-over switch is used for connecting one of the card slots and is connected with the communication module.

Preferably, in the communication terminal, the card switch includes a plurality of switch chips.

Preferably, in the communication terminal, the communication module is one or two of a 3G module and a 4G module.

Preferably, the communication module comprises a storage unit, configured to store value range data of parameters of the SIM card and predetermined value data of a sum.

An electricity acquisition device comprises the communication terminal, a communication interface, a serial port level converter, a module enabler, an indicator light, a USB debugging interface, an antenna and a base meter;

the serial port level converter, the module enabler, the indicator light, the USB debugging interface and the antenna are respectively and electrically connected with the communication terminal;

the serial port level converter and the module enabler are respectively electrically connected with the communication interface;

and the base meter is in communication connection with the communication interface and is electrically connected with a power supply in the communication terminal.

Compared with the prior art, the utility model provides a communication terminal and electricity collection equipment uses the method provided by the utility model, in the equipment opening stage, the sum of a plurality of cards is compared automatically, and then the card with the best signal quality is selected to be connected with the communication module, thus realizing the purpose of increasing the communication quality, and compared with a multi-card multi-standby terminal, the method has obvious cost advantage; compared with a single-card single-standby terminal, the method can flexibly select a communication network with better quality for communication, and is a great progress in the field.

Drawings

Fig. 1 is a flow chart of a multi-card single standby implementation method of a communication terminal provided by the present invention;

fig. 2 is a block diagram of a communication terminal according to embodiment 1 of the present invention;

fig. 3 is a block diagram of the electric collecting apparatus provided by the present invention;

fig. 4a-4b are circuit diagrams of two switch chips of the card changeover switch according to embodiment 1 of the present invention;

fig. 5a to 5c are circuit diagrams of three card slots in embodiment 1 provided by the present invention, respectively.

Detailed Description

In order to make the objects, technical solutions and effects of the present invention clearer and clearer, the following description of the present invention will refer to the accompanying drawings and illustrate embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Example 1

Please refer to fig. 1, the utility model provides a communication terminal multi-card single standby implementation method, which comprises the following steps:

s1, respectively acquiring RSRP, RSRQ and SINR parameters of each card, and then respectively carrying out normalization processing on the RSRP, the RSRQ and the SINR parameters of each card to obtain corresponding normalization values;

s2, carrying out weighted summation calculation on the normalized values of the RSRP, the RSRQ and the SINR parameters of each card to obtain a sum value;

and S3, comparing the sum of each card, and connecting the card with the maximum sum with a communication module, wherein the communication module matches a communication source according to the card type.

Further, please refer to fig. 2, the present invention further provides a communication terminal using the method, comprising a communication module 11, a card switch 12, a plurality of card slots 13, and a power supply 14;

the card slot 13 is used for loading an SIM card, and the card switching switch is connected with the SIM card;

the power supply 14 is used for supplying power to the communication module 11;

the card changeover switch 12 is used for switching on one of the card slots 13 according to an instruction of the communication module 11 and connecting the card slot with the communication module 11;

the communication module 11 is configured to obtain RSRP, RSRQ, and SINR parameters of the cards, calculate corresponding normalization values, obtain sum values according to the normalization values, determine a maximum sum value among a plurality of sum values of the plurality of SIM cards, and send an instruction to the card switch according to the maximum sum value.

Preferably, in this embodiment, the communication module 11 is one or two of a 3G module and a 4G module.

Specifically, referring to fig. 4-5, in this embodiment, the number of the card slots 13 is preferably 3, and the card slots are No. 1 card slot, No. 2 card slot and No. 3 card slot, which correspond to the communication 4G, the mobile 4G and the telecommunication 4G in three operators, respectively, and of course, in other implementation cases, the card slots may also be corresponding 3G networks; correspondingly, the communication module 11 is a 4G module of the full network. At the equipment starting stage, the card change-over switch 12 sequentially connects the three card slots 13 with the communication module 11, the communication module 11 acquires RSRP, RSRQ, and SINR parameters of the three cards, respectively, and then calculates corresponding normalization values of the RSRP, RSRQ, and SINR parameters of each card, and further calculates a sum of each card, thereby stably connecting the card slot of the card with the highest sum. When one of the cards is turned on, the other two cards do not operate.

When the communication module 11 includes both the 3G module and the 4G module, the card changeover switch 12 is connected to the 3G module and the 4G module, respectively, and when a card with the best communication quality is selected, the largest of 6 sets of sum values (i.e., the 3G/4G sum value of the No. 1 card, the 3G/4G sum value of the No. 2 card, and the 3G/4G sum value of the No. 3 card) should be selected for communication.

As a preferred solution, in this embodiment, the card changeover switch includes a plurality of changeover chips.

Referring to fig. 4a-4b, the card slots 13 of this embodiment are three in number, and thus the card switch 12 includes two alternative switching chips (model number is FSA2567) capable of implementing a switching function of one out of three, and the card switch is connected to the card slots in fig. 5a-5c by using the same identification.

Furthermore, in other design schemes, the plurality of card slots 13 are in communication connection with the communication module 11, the communication module 11 is electrically connected with the card switch 12, the card slot 13 is powered on when the card switch 12 is connected with the corresponding card slot 13, then the card slot 13 is in communication with the communication module 11, and the communication module 11 can detect the response parameters and data of the card.

As a preferred solution, in this embodiment, the communication module 11 includes a storage unit, configured to store value range data of parameters of the SIM card and preset value data of a sum.

In the preferred embodiment, the RSRP value range is-115 to-85 dBm; the SINR value range is 3-25; the value range of the RSRQ is-3 to-19.5.

The algorithm of the normalization processing is as follows:

wherein the content of the first and second substances,

is a normalized value; x is a parameter value which is respectively an RSRP parameter, an RSRQ parameter and an SINR parameter; x_maxIs the maximum value in the value range of X; x_maxIs the minimum value in the value range. The value range of the normalized value is [0,1 ]]When the signal quality of the card is the worst, the normalization value is 0, otherwise, when the signal quality is the strongest,the normalized value is 1.

Correspondingly, the RSRP, RSRQ, and SINR parameters respectively correspond to the following formulas:

preferably, in this embodiment, the weighting ratio in step S2 is

The calculation formula of the sum is as follows:

wherein, is a sum value;

respectively, the normalized values of the RSRP, RSRQ and SINR parameters. The sum value is in the range of [0,10]]The value is 0 when the signal quality is the worst, and is 10 when the signal quality is the strongest.

As a preferable scheme, in this embodiment, the communication module is further configured to determine in real time whether the sum of the currently connected cards is lower than the predetermined value. The method further comprises the steps of:

and S4, detecting the sum value of the current connected card in real time, and executing the step S1 when the sum value is lower than a preset value, otherwise, continuing to use the current connected card for communication.

The preset value is 3-7. In this embodiment, in general, the preferred value of the predetermined value is 3 or 4 or 5, that is, when the communication module detects that the sum of the currently connected cards is less than 3 or 4 or 5, the step S1 is executed.

Specifically, the correspondence between the sum and the quality of the communication signal is as follows: r ranges from [0,10], and belongs to [0, 3] as the signal quality difference; and in the running process of the equipment, the communication module acquires the parameters of RSRP, RSRQ and SINR of the current connected card in real time and obtains a sum value, if the sum value is less than a preset value, the step S1 is executed again, the parameters of the card in a new round are calculated, and the card with the best communication quality is determined again to carry out connected communication.

Example 2

Please refer to fig. 3, the present invention further provides an electricity collecting device, comprising the communication terminal, the communication interface 2, the serial port level shifter 3, the module enabler 4, the indicator lamp 5, the USB debugging interface 6, the antenna 7 and the base meter 8;

the serial port level shifter 3, the module enabler 4, the indicator lamp 5, the USB debugging interface 6 and the antenna 7 are respectively and electrically connected with the communication terminal; specifically, the serial port level shifter 3, the module enabler 4, the indicator lamp 5, the USB debug interface 6, and the antenna 7 are respectively connected to the communication module 11 of the communication terminal;

the serial port level converter 3 and the module enabler 4 are respectively electrically connected with the communication interface 2;

the base table 8 is connected to the communication interface 2 in communication, and is electrically connected to a power supply 14 in the communication terminal.

Specifically, the communication interface 2 is configured to perform serial port communication with the base table 8; the serial port level converter 3 is configured to convert a 5V signal output by the base meter 8 into 1.8V and send the 1.8V signal to the communication module 11, and convert a 1.8V signal output by the communication module 11 into 5V and send the 5V signal to the base meter 8; the power supply 14 is used for converting 5V provided by the base table 8 into 4V and supplying the 4V to the communication module 11; the module enabler 4 is used for controlling the communication module 11 to be turned on and off; the indicator light 5 is used for indicating information such as a power supply, a network state, a communication state and the like; the USB debugging interface 6 is used for printing debugging information, burning programs and the like of the communication module 11; the communication module 11 in the communication terminal has a modulation and demodulation function, modulates data received by a serial port and converts the data into radio frequency signals to be transmitted through the antenna 7 when transmitting data, demodulates the radio frequency signals received by the antenna 7 when receiving data, and transmits the radio frequency signals to the base table 8 through the serial port level converter 3 and the communication interface 2.

The utility model provides an electricity collection equipment, even under the extremely unfavorable (for example typhoon) condition of environment, probably mobile signal becomes very poor, but UNICOM and telecommunication signal can also, also probably UNICOM's signal becomes very poor, but remove and telecommunication signal can also, still can guarantee to use the best communication quality to communicate with the server under this kind of condition.

It should be understood that equivalent alterations and modifications can be made by those skilled in the art according to the technical solution of the present invention and the inventive concept thereof, and all such alterations and modifications should fall within the scope of the appended claims.

Claims (5)

1. A communication terminal is characterized by comprising a communication module, a card change-over switch, a plurality of card slots and a power supply;

the card slot is used for loading an SIM card and is connected with the card changeover switch;

the power supply is used for supplying power to the communication module;

the card change-over switch is used for connecting one of the card slots and is connected with the communication module.

2. The communication terminal according to claim 1, wherein the card changeover switch includes a plurality of changeover chips.

3. The communication terminal of claim 1, wherein the communication module is one or both of a 3G module and a 4G module.

4. The communication terminal of claim 1, wherein the communication module comprises a memory unit.

5. An electricity collection device, comprising the communication terminal, the communication interface, the serial port level shifter, the module enabler, the indicator light, the USB debug interface, the antenna and the base meter of any one of claims 1 to 4;

the serial port level converter, the module enabler, the indicator light, the USB debugging interface and the antenna are respectively and electrically connected with the communication terminal;

the serial port level converter and the module enabler are respectively electrically connected with the communication interface;

and the base meter is in communication connection with the communication interface and is electrically connected with a power supply in the communication terminal.

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