Beidou energy-saving device and endurance duration evaluation method thereof

Abstract

The invention provides a Beidou energy-saving device and an endurance duration evaluation method thereof, and the device comprises an external antenna which is used for receiving a Beidou satellite signal and sending a short message; the terminal device comprises a built-in antenna, a Beidou integrated board, a mainboard, a lithium battery and an interface board. The built-in antenna is used for receiving Beidou satellite signals and sending short messages; the Beidou integrated board is used for controlling the switching of the external antenna and the internal antenna according to the current, carrying out receiving resolving and emission modulation on Beidou satellite signals, amplifying the Beidou satellite signals and then sending the Beidou satellite signals to the Beidou satellite through the antennas; the main board is used for controlling external equipment and an interface, supplying power to the Beidou integrated board, communicating with each other and managing charging and discharging of the lithium battery; the lithium battery is used for supplying power to the Beidou integrated board, the mainboard, the interface board and the external antenna; the power adapter is used for charging the lithium battery; and the computer is used for sending the length and the content of the short message input by the user on the serial port communication interface of the computer to the mainboard. Energy is saved under the condition that normal signal receiving and transmitting are guaranteed.

Description

Technical Field

[0001] The present invention relates to the field of Beidou positioning technology, and in particular to a Beidou energy-saving device and a method for evaluating the battery life thereof. Background Art

[0002] Compared with other satellite navigation systems, the Beidou navigation system has a short message function and can transmit text information through Beidou satellites.

[0003] In areas with poor mobile communication coverage such as forest fire prevention, border patrol, uninhabited area exploration, remote mining, etc., the ambient temperature difference is large, and the low temperature can reach -40℃; the geographical environment is harsh, and there is no charging condition during long-distance trekking. In order to provide reliable location information reporting services, the continuous working time is required to be no less than 16 hours in normal temperature environment (25℃) and no less than 8 hours in low temperature environment (-40℃).

[0004] Therefore, it is necessary to provide a short message device with a longer battery life to ensure the execution of a long-distance mission. Summary of the invention

[0005] In view of the problems existing in the prior art, the present invention provides a Beidou energy-saving device and a method for evaluating the battery life thereof.

[0006] The present invention provides a Beidou energy-saving device, comprising:

[0007] External antenna for receiving Beidou satellite signals and sending short messages;

[0008] The terminal device comprises a built-in antenna, a Beidou integrated board, a main board, a lithium battery and an interface board, wherein the built-in antenna, the main board and the external antenna are connected to the Beidou integrated board, and the lithium battery and the interface board are connected to the main board;

[0009] The built-in antenna is used to receive Beidou satellite signals and send short messages;

[0010] The Beidou integrated board is used to control the switching access between the external antenna and the internal antenna according to its own current, receive Beidou satellite signals from the external antenna and / or the internal antenna, perform reception and resolution and transmission modulation on the Beidou satellite signals, and send them to the Beidou satellites through the external antenna and / or the internal antenna after amplification;

[0011] The mainboard is used to control external devices and interfaces, supply power to the Beidou integrated board and communicate with each other, and manage the charging and discharging of the lithium battery;

[0012] The lithium battery is used to power the Beidou integrated board, main board, interface board and external antenna;

[0013] A power adapter connected to the interface board, the power adapter is used to charge the lithium battery through the interface board and the main board;

[0014] The computer is connected to the interface board, and the computer is used to send the length and content of the short message input by the user in the computer serial communication interface to the main board.

[0015] The present invention also provides a method for evaluating the endurance of a battery based on any of the above-mentioned Beidou energy-saving devices, comprising:

[0016] Determine the screen-on working power consumption of the terminal equipment in the Beidou energy-saving device;

[0017] Determine the screen-off battery life of the terminal device according to the screen-on working power consumption;

[0018] The total battery life of the Beidou energy-saving device is determined based on the preset screen-on working time and the screen-off battery life of the terminal device.

[0019] The present invention provides a Beidou energy-saving device and a method for evaluating the battery life thereof. By comprehensively utilizing the built-in antenna and the external antenna of the terminal device and controlling the switching access between the external antenna and the built-in antenna by detecting the current, the power consumption is reduced while ensuring the normal signal reception and transmission. In addition, stable short message communication can be provided in an environment with poor communication signal coverage or without wired network resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is one of the structural schematic diagrams of the Beidou energy-saving device provided by the present invention;

[0022] Figure 2 This is the second structural schematic diagram of the Beidou energy-saving device provided by the present invention;

[0023] Figure 3 It is a schematic diagram of the location information report receiving and sending mode of the Beidou energy-saving device provided by the present invention;

[0024] Figure 4 It is a schematic diagram of sending, receiving and storing position information reports in the Beidou energy-saving device provided by the present invention;

[0025] Figure 5It is a schematic diagram of the endurance time of the position information report under the ambient temperature of the Beidou energy-saving device provided by the present invention;

[0026] Figure 6 It is a schematic diagram of power consumption evaluation of the Beidou energy-saving device provided by the present invention;

[0027] Figure 7 It is a schematic diagram of the flow of a method for estimating the battery life of a Beidou energy-saving device provided by the present invention;

[0028] Figure 8 It is a flow chart of a method for testing and evaluating the battery life of a Beidou energy-saving device provided by the present invention. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] In the prior art, a BeiDou-3 RDSS (Radio Determination Satellite Service) mobile phone back clip includes an MCU (Microcontroller Unit), an RDSS short message module, a power management module, a battery, an RDSS antenna, and a USB (Universal Serial Bus) Type-C interface for connecting a mobile phone, thereby organically combining the BeiDou-3 back clip with a public network mobile phone, plug-and-play, and realizing short message communication.

[0031] Disadvantages: First, it needs to be used in conjunction with a public network mobile phone. Short message communication cannot be provided without a public network mobile phone or in an environment with poor mobile signal coverage. Second, the RNSS (Radio Navigation Satellite Service) antenna is not provided, and high-precision short message location services cannot be provided. Third, the hardware module does not specify energy-saving applications and cannot provide long battery life.

[0032] In the prior art, a Beidou short message sharing terminal and a Beidou short message receiving and sending method are provided, wherein the Beidou short message sharing terminal integrates a Beidou short message module, a wired network interface module, a WIFI (Wireless Fidelity), an AP (Access Point) module, a Bluetooth wireless module and other communication interfaces. The short message sending and receiving sharing is realized through the communication interface.

[0033] The disadvantages are: first, the shared terminal cannot provide short message communication in an environment with poor communication signal coverage or without wired network resources because it integrates wired and wireless communication modules; second, the shared terminal is not convenient to move and carry, and cannot support outdoor applications such as border patrols and forest inspections; third, the RNSS antenna is not provided in the hardware circuit, and high-precision short message location services cannot be provided; fourth, the L-frequency transmission power is large, the power consumption is large, it is not an energy-saving device, and does not support portable long-term endurance applications; fifth, the short message sending and receiving process is too complicated, and multiple interfaces need to queue for sending and receiving, and there is a risk of delay conflict and short message loss, which affects the success rate of short message communication.

[0034] The present invention is essentially different from the above-mentioned prior art. How to realize short message sending and receiving communication without a public network or an external communication interface, can provide regional short message communication and global short message communication, support a variety of combined applications in installation and adaptation, easy to use, especially to achieve high-precision location information reporting with long battery life and energy-saving evaluation method are the innovation points of the present invention.

[0035] Combine the following Figure 1 A Beidou energy-saving device of the present invention is described, comprising:

[0036] External antenna for receiving Beidou satellite signals and sending short messages;

[0037] The terminal device comprises a built-in antenna, a Beidou integrated board, a main board, a lithium battery and an interface board, wherein the built-in antenna, the main board and the external antenna are connected to the Beidou integrated board, and the lithium battery and the interface board are connected to the main board;

[0038] The built-in antenna is used to receive Beidou satellite signals and send short messages;

[0039] The Beidou integrated board is used to control the switching access between the external antenna and the internal antenna according to its own current, receive Beidou satellite signals from the external antenna and / or the internal antenna, and send the frequency-converted intermediate frequency signal to the baseband circuit, perform reception and resolution and transmission modulation on the Beidou satellite signal, and send it to the Beidou satellite through the external antenna and / or the internal antenna after amplification;

[0040] The mainboard is used to control external devices and interfaces, supply power to the Beidou integrated board and communicate with each other, and manage the charging and discharging of the lithium battery;

[0041] The lithium battery is used to power the Beidou integrated board, main board, interface board and external antenna;

[0042] A power adapter connected to the interface board, the power adapter is used to charge the lithium battery through the interface board and the main board;

[0043] A computer is connected to the interface board, and the computer is used to send the length and content of the short message input by the user in the computer serial communication interface to the main board, and further receive the position information statement.

[0044] The terminal device can be a mobile phone, tablet or other wearable device. The power adapter can support 5V slow charging and 12V fast charging for the charging voltage of the lithium battery. The lithium battery has a large capacity and can work normally in a low temperature environment of -40℃. The Beidou integrated board is further used for the transmission and reception of Beidou regional short messages and Beidou global short messages.

[0045] This embodiment makes comprehensive use of the built-in antenna and the external antenna of the terminal device, and controls the switching access between the external antenna and the built-in antenna by detecting the current, thereby reducing power consumption while ensuring normal signal reception and transmission, and can provide stable short message communication in an environment with poor communication signal coverage or without wired network resources.

[0046] Based on the above embodiments, Figure 2 As shown, the external antenna in this embodiment includes a B2b antenna and a common antenna, the common antenna is used to receive satellite signals of Beidou S, B3, B1 and B2 frequencies, and send global short messages and regional short messages, the B2b antenna is an active antenna, containing a low-noise amplifier and a filter circuit, and the B2b antenna is used to receive global short messages; and / or,

[0047] The built-in antenna includes a Beidou L antenna vibrator, a Beidou S receiving antenna vibrator and a Beidou B3 receiving antenna vibrator, and the built-in antenna is used to receive satellite signals of Beidou B3 and S frequency points and transmit regional short messages of L frequency point; and / or,

[0048] The Beidou integrated board includes an L power amplifier circuit, an S low noise amplifier circuit, a B3 low noise amplifier circuit, a switch, a power division network, a filter, a multi-mode multi-frequency transceiver circuit, a current detection circuit, a Beidou baseband circuit, an interface circuit and a power conversion circuit. One end of each of the L power amplifier circuit, the S low noise amplifier circuit and the B3 low noise amplifier circuit is connected to the power division network and the corresponding filter through a corresponding switch, and the other end of each is connected to the built-in antenna. The power division network is connected to the filter and the current detection circuit, and the multi-mode multi-frequency transceiver circuit is connected to the filter. The multi-mode multi-frequency transceiver circuit, the current detection circuit, and the interface circuit are connected to the Beidou baseband circuit; and / or,

[0049] The mainboard includes one or more of a power management circuit, a first storage medium (storage medium 2) and a first control circuit (control circuit 2), wherein the first storage medium (storage medium 2) is used to store one or more of short message information, serial port information and configuration information, the power management circuit is used to manage the charge and discharge of the lithium battery, and convert the power provided by the lithium battery into a preset DC voltage output (such as a step-up and step-down power supply conversion output 5V DC voltage), and the first control circuit (control circuit 2) is used to control and process peripherals, display screens and external interfaces, and exchange interface information protocols at the same time; and / or,

[0050] The interface board includes a USB-TypeC interface circuit, and the USB-TypeC interface circuit includes one or more of 1pps, a first serial port (serial port 2), a second serial port (serial port 3), Vbus and a D+ / D- interface. The first serial port (serial port 2) is used for charging and debugging, the second serial port (serial port 3) is used to exchange information with an external device, the D+ / D- interface is used to exchange information with the computer, and the Vbus interface is used for an AC power adapter to charge the terminal device. The Vbus interface DC voltage supports +12V fast charging and +5V slow charging;

[0051] The common antenna in the external antenna includes Beidou L, S, B1, B3 and B2 antenna vibrators, Beidou L transmission power amplifier circuit, Beidou S receiving low noise amplifier circuit, Beidou receiving B1 low noise amplifier circuit, Beidou receiving B3, B2b and B2a low noise amplifier circuit, which are used to receive Beidou S, B3, B1 and B2 satellite signals, and send global short messages or regional short messages. The external antenna is connected and used through the external port of the mobile phone.

[0052] The Beidou integrated board is used for Beidou S, B3, B1, B2b and B2a signal reception, amplification, filtering, down-conversion, baseband positioning solution, etc. It is also used for sending Beidou regional short messages and Beidou global short messages.

[0053] Based on the above embodiments, Figure 2As shown, the interface circuit in this embodiment includes one or more of 1pps, a third serial port (serial port 0), a fourth serial port (serial port 1), a first power supply voltage (VCC1) and a second power supply voltage (VCC2), the interface circuit is used for interface and level conversion, the third serial port (serial port 0) is used for injection debugging, the fourth serial port (serial port 1) is used to exchange information with the mainboard, the first power supply voltage (VCC1) and the second power supply voltage (VCC2) receive the current (such as +5V DC) output from the power management circuit, the first power supply voltage (VCC1) supplies power to the power conversion circuit, and the second power supply voltage (VCC2) supplies power to the current detection circuit, the external port and the built-in L power amplifier circuit; and / or,

[0054] The multi-mode multi-frequency transceiver circuit includes one or more of a transmission signal up-conversion modulation circuit, a reception signal down-conversion processing circuit and a register circuit, wherein the register is used to store configuration information of transceiver circuit parameters, such as whether the transmission circuit is turned on or off and the low power consumption mode configuration of the reception circuit; and / or,

[0055] The Beidou baseband circuit includes one or more of a second control circuit (control circuit 1), other logic circuits and firmware;

[0056] The other logic circuits and firmware are used to receive the intermediate frequency signal output by the down-conversion of the multi-mode multi-frequency transceiver circuit, calculate and output the position information, and send a short message baseband signal to the multi-mode multi-frequency transceiver circuit for modulation and output;

[0057] The second control circuit (control circuit 1) is used to configure the transmission signal control word of the multi-mode multi-frequency transceiver circuit, which is not limited to the control word containing the high and low temperature compensation of the transmission signal, and controls the switching of the switch according to the current detected by the current detection circuit, including controlling the switches corresponding to the L power amplifier circuit, the S low noise amplifier circuit and the B3 low noise amplifier circuit, etc., so as to realize the switching access between the external antenna and the internal antenna; and / or,

[0058] The power conversion circuit is used to convert the direct current output by the first power supply voltage (VCC1) in the interface circuit into different voltages to respectively power the low noise amplifier circuit, switch, multi-mode multi-frequency transceiver circuit, current detection circuit and Beidou baseband circuit.

[0059] The power conversion circuit improves the power conversion efficiency, and the power conversion efficiency is between 88% and 96% under low voltage and low current conditions. For example, the power conversion circuit converts the +2.5V to 4.35V DC output of VCC1 in the receiving interface circuit into 3.3V, 1.8V, 1.35V, 1.2V and 0.8V respectively, which are used to power the low noise amplifier circuit, switch, multi-mode multi-frequency transceiver circuit, current detection and Beidou baseband circuit.

[0060] On the basis of the above embodiment, in this embodiment, the second control circuit is used for:

[0061] When the current detected by the current detection circuit is less than the first preset threshold value, the switch is controlled to switch to the built-in antenna working mode, the switch connected to the L power amplifier circuit switches the built-in channel, the switch connected to the S low noise amplifier circuit switches the built-in channel and turns on the S low noise amplifier circuit, and the switch connected to the B3 low noise amplifier circuit switches the built-in channel and turns on the B3 low noise amplifier circuit, and the built-in antenna working mode is used to transmit regional short messages through the built-in L power amplifier circuit and receive Beidou satellite signals through the B3 low noise amplifier circuit;

[0062] When the current detected by the current detection circuit is greater than or equal to the first preset threshold and less than or equal to the second preset threshold, the switch is controlled to switch to a mixed working mode of the internal antenna and the external antenna, the switch connected to the L power amplifier circuit switches the internal channel, the switch connected to the S low noise amplifier circuit switches the external channel and turns off the S low noise amplifier circuit, and the switch connected to the B3 low noise amplifier circuit switches the internal channel and turns on the B3 low noise amplifier circuit, the second preset threshold is greater than the first preset threshold, and the mixed working mode is used to transmit global short messages through the internal L power amplifier circuit, receive Beidou satellite signals through the B3 low noise amplifier circuit, and receive short message receipt signals through the external B2b antenna;

[0063] When the current detected by the current detection circuit is greater than the second preset threshold value, the switch is controlled to switch to the external antenna working mode, the switch connected to the L power amplifier circuit switches the external channel, the switch connected to the S low noise amplifier circuit switches the external channel and turns off the S low noise amplifier circuit, and the switch connected to the B3 low noise amplifier circuit switches the external channel and turns off the B3 low noise amplifier circuit. In the external antenna working mode, global short messages or regional short messages are sent and received through an external ordinary antenna, and Beidou satellite signals are received through the external B3 low noise amplifier circuit.

[0064] The first preset threshold value may be set to 20 mA, and the second preset threshold value may be set to 60 mA.

[0065] Based on the above embodiments, Figure 3 As shown, the short message sending and receiving modes described in this embodiment include external global short messages, external regional short messages and internal regional short messages;

[0066] There are two configurations for external global short messages. One is to configure an external B2b antenna, internal antenna, internal L power amplifier, internal B3 low noise amplifier, multi-mode multi-frequency transceiver circuit, Beidou baseband circuit, interface circuit, main board and interface board and other circuit combinations. The other is to configure an external common antenna, multi-mode multi-frequency transceiver circuit, Beidou baseband circuit, interface circuit, main board, interface board and other circuit combinations. Both combinations can be used for external global short message location information report transmission and reception;

[0067] For the built-in regional short message, the configuration includes a built-in antenna, a built-in power amplifier, a built-in S low noise amplifier, a built-in B3 low noise amplifier, a multi-mode multi-frequency transceiver circuit, a Beidou baseband circuit, an interface circuit, a main board and an interface board, etc., which are used for sending and receiving the built-in regional short message location information report;

[0068] For external regional short messages, the configuration content includes an external ordinary antenna, a multi-mode and multi-frequency transceiver circuit, a Beidou baseband circuit, an interface circuit, a main board and an interface board and other circuit combinations, which are used for sending and receiving external regional short message location information reports.

[0069] On the basis of the above embodiment, the computer in this embodiment is further used to count the number of receipts of short messages received from the mainboard, and to count the message communication success rate based on the number.

[0070] Based on the above embodiments, Figure 4 As shown, the operation of the short message in this embodiment includes calculating the position information, receiving the short message and sending the short message. The word length of the short message sent is less than or equal to a preset number of Chinese characters, and different transmission rates are supported. The positioning accuracy of the calculated position information is that the error in the horizontal direction is less than or equal to the third preset threshold, and the error in the elevation direction is less than or equal to the fourth preset threshold.

[0071] For example, the maximum length of the short message sent is 1,000 Chinese characters, and it supports four transmission rates of 2kbps, 4kbps, 8kbps and 16kbps. The storage capacity provides 256GB, and the hardware circuit can receive RNSS B3 frequency satellite positioning signals. The calculated position information is used to provide positioning accuracy (95%): horizontal ≤ 6m, elevation ≤ 8m, and can provide high-precision short message location services, which is higher than the S position positioning accuracy. The receiving short message information is used to receive the receipt information of the transmitted short message, and is used to count the communication success rate of the position signal report.

[0072] The present invention also provides a method for evaluating the endurance of a Beidou energy-saving device based on any one of the above embodiments, which is used for energy-saving design evaluation, including:

[0073] Determine the screen-on working power consumption of the terminal equipment in the Beidou energy-saving device;

[0074] Determine the screen-off battery life of the terminal device according to the screen-on working power consumption;

[0075] The total battery life of the Beidou energy-saving device is determined based on the preset screen-on working time and the screen-off battery life of the terminal device.

[0076] Based on the above embodiment, in this embodiment, the power consumption of the terminal device in the Beidou energy-saving device when the screen is on is determined, including:

[0077] The screen-on working power consumption is calculated based on the screen-on instantaneous power consumption, screen-off instantaneous power consumption and preset screen-on working time of the terminal device, as well as the transmission duration of each location information report and the transmission frequency of each location information report.

[0078] Based on the above embodiment, the power consumption of the bright screen operation is calculated by the following formula in this embodiment:

[0079] B=(P2+(P3-P2)×T1 / T2)×T3

[0080] Among them, B is the power consumption of the screen on, in watt-hours; P2 is the instantaneous power consumption of the screen on, in watts; P3 is the instantaneous power consumption of the screen off, in watts; T1 is the transmission duration of each location information report, in seconds; T2 is the transmission frequency of each location information report, in seconds; T3 is the preset screen on working duration, in hours.

[0081] On the basis of the above embodiment, in this embodiment, the screen-off battery life of the terminal device is determined according to the screen-on working power consumption by the following formula, including:

[0082] T4 = (AB) / (P1 + (P3 - P1) × T1 / T2)

[0083] Wherein, T4 is the screen-off battery life in hours, A is the maximum capacity of the lithium battery in watt-hours; P1 is the standby transient power consumption of the terminal device in watts;

[0084] The formula for the total endurance time T5 of the Beidou energy-saving device is:

[0085] T5=T3+T4.

[0086] Based on the above embodiments, the battery life options of the Beidou energy-saving device in this embodiment include the battery life of the built-in antenna when the ambient temperature is lower than the fifth preset threshold (low temperature) and the battery life of the external antenna when the ambient temperature is greater than or equal to the fifth preset threshold (high temperature).

[0087] During long-distance journeys, without charging conditions, the Beidou energy-saving device provided in this embodiment can continuously report location information for no less than 16 hours at normal temperature (25°C), and can normally send and receive location information reports at low temperature (-40°C), with a continuous location information reporting time of no less than 8 hours.

[0088] Figure 5 This is a schematic diagram of the battery life of the location information report under ambient temperature provided by an embodiment of the present invention, including normal temperature battery life evaluation and low temperature battery life evaluation. Figure 3 The built-in regional short message in is used to evaluate the normal temperature endurance of Beidou energy-saving devices; low temperature endurance evaluation, configuration Figure 3 The external regional short message in is used to evaluate the low-temperature endurance of the Beidou energy-saving device.

[0089] Figure 6 This is a schematic diagram of power consumption evaluation of a Beidou energy-saving device provided in an embodiment of the present invention, and the process steps include: firstly, performing power consumption evaluation of receiving positioning information in standby mode; further, performing power consumption evaluation of sending and receiving positioning information reports with the screen on, including power consumption evaluation of transmitting positioning information reports and power consumption evaluation of receiving positioning information in the screen on mode; further, performing power consumption evaluation of sending and receiving positioning information reports with the screen off, including power consumption evaluation of transmitting positioning information reports and power consumption evaluation of receiving positioning information in standby mode.

[0090] The detailed parameters of the power consumption evaluation of the built-in antenna at normal temperature are shown in Table 1, and the detailed parameters of the power consumption evaluation table of the external ordinary antenna at low temperature are shown in Table 2. The power consumption of receiving positioning information in standby mode is 1.05W at normal temperature of 25℃ and 1.16W at low temperature of -40℃; the power consumption of receiving positioning information with the screen on is 1.33W at normal temperature of 25℃ and 1.44W at low temperature of -40℃; the power consumption of transmitting position information report is 12.45W at normal temperature of 25℃ and 12.56W at low temperature of -40℃.

[0091] Table 1

[0092]

[0093] Table 2

[0094]

[0095] Figure 7 This is a schematic diagram of a method for estimating the battery life of a Beidou energy-saving device provided by an embodiment of the present invention. The method steps include: first, the total discharge of the lithium battery is estimated. At room temperature +25°C, the total discharge C1 is evaluated based on the product of the lithium battery rated voltage and the battery capacity; at low temperature -40°C, the total discharge C2 of the lithium battery is estimated to be about 61% of the total discharge at room temperature. Further, the power consumption of standby, screen on, and screen off is estimated. For details, see Figure 6The power consumption evaluation of the Beidou energy-saving device provided in the embodiment; further, the transmission duration and transmission frequency of the location information report: the transmission duration supports a maximum of 1000 Chinese characters each time, and this embodiment takes 1000 Chinese characters, with a duration of about 1 second; the transmission frequency supports a range of 30 seconds to 180 seconds, and this embodiment takes a positioning information report frequency of 120 seconds; further, the battery life mode selection: the internal antenna battery life in low temperature environment; the external antenna battery life in normal temperature environment, see for details Figure 5 A schematic diagram of the battery life of the location information report under the provided ambient temperature; further scenario estimation: in this embodiment, the battery life of the screen on is 1 hour or 2 hours; the power consumption of the screen on is calculated, and then the battery life of the screen off is calculated, and finally the total battery life is calculated.

[0096] Table 3 is an example of estimating the normal temperature endurance time provided by an embodiment of the present invention. Figure 7 The provided battery life evaluation method calculated that the battery life at normal temperature is 18.13 hours.

[0097] Table 4 is a low temperature endurance estimation table provided by an embodiment of the present invention. Figure 7 The endurance evaluation method provided in the embodiment adopts the above-mentioned endurance evaluation calculation formula to evaluate and calculate that the low-temperature endurance is 10.14 hours.

[0098] Table 3

[0099]

[0100] Table 4

[0101] project value unit Remark Maximum capacity of lithium battery 12.98 Wh, watt-hour Standby transient power consumption 1.16 W, Watt Instantaneous power consumption when screen is on 1.44 W, Watt Screen off transient power consumption 12.56 W, Watt Duration of each position information report transmission 1.00 S, seconds 1000 Chinese characters Frequency of sending each location report 120.00 S, seconds Cumulative screen working time 1.00 h, hour Screen on time: 1 hour Cumulative power consumption when the screen is on 1.53 Wh, watt-hour Screen-off working time 9.14 h, hour Battery life 10.14 h, hour

[0102] Figure 8 It is a schematic diagram of the battery life test and evaluation method of the Beidou energy-saving device provided by an embodiment of the present invention. The battery life test and evaluation method steps include: first, fully charge the lithium battery of the mobile phone, 4.35V≤lithium battery voltage<4.45V; further, select normal temperature or low temperature battery life mode, select internal antenna or external antenna battery life mode; further, build a mobile phone to send and receive information to the sky scene, turn on the phone, and set basic parameters; further, set the screen working time to 1 hour or 2 hours, set the location information report transmission frequency to 120 seconds and compile 1000 Chinese characters for each transmission; further, click the location information report transmission button on the display screen, start counting the number of location information reports, and count whether the communication success rate is greater than 95%. Using the above-mentioned battery life test and evaluation method, the actual normal temperature battery life is 17.5 hours, and the communication success rate is 98%; the actual low temperature battery life is 9.9 hours, and the communication success rate is 96%.

[0103] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A Beidou energy-saving device, characterized in that: include: External antenna for receiving Beidou satellite signals and sending short messages; The terminal device comprises a built-in antenna, a Beidou integrated board, a main board, a lithium battery and an interface board, wherein the built-in antenna, the main board and the external antenna are connected to the Beidou integrated board, and the lithium battery and the interface board are connected to the main board; The built-in antenna is used to receive Beidou satellite signals and send short messages; The Beidou integrated board is used to control the switching access between the external antenna and the internal antenna according to its own current, receive Beidou satellite signals from the external antenna and / or the internal antenna, perform reception and resolution and transmission modulation on the Beidou satellite signals, and send them to the Beidou satellites through the external antenna and / or the internal antenna after amplification; The mainboard is used to control external devices and interfaces, supply power to the Beidou integrated board and communicate with each other, and manage the charging and discharging of the lithium battery; The lithium battery is used to power the Beidou integrated board, main board, interface board and external antenna; A power adapter connected to the interface board, the power adapter is used to charge the lithium battery through the interface board and the main board; The computer is connected to the interface board, and the computer is used to send the length and content of the short message input by the user in the computer serial communication interface to the main board.

2. The Beidou energy-saving device according to claim 1, characterized in that: The external antenna includes a B2b antenna and a common antenna, the common antenna is used to receive satellite signals of Beidou S, B3, B1 and B2 frequencies, and send global short messages and regional short messages, the B2b antenna is an active antenna, containing a low-noise amplifier and a filter circuit, and the B2b antenna is used to receive global short messages; and / or, The built-in antenna includes a Beidou L antenna vibrator, a Beidou S receiving antenna vibrator and a Beidou B3 receiving antenna vibrator, and the built-in antenna is used to receive satellite signals of Beidou B3 and S frequency points and transmit regional short messages of L frequency point; and / or, The Beidou integrated board includes an L power amplifier circuit, an S low noise amplifier circuit, a B3 low noise amplifier circuit, a switch, a power division network, a filter, a multi-mode multi-frequency transceiver circuit, a current detection circuit, a Beidou baseband circuit, an interface circuit and a power conversion circuit. One end of each of the L power amplifier circuit, the S low noise amplifier circuit and the B3 low noise amplifier circuit is connected to the power division network and the corresponding filter through a corresponding switch, and the other end of each is connected to the built-in antenna. The power division network is connected to the filter and the current detection circuit, and the multi-mode multi-frequency transceiver circuit is connected to the filter. The multi-mode multi-frequency transceiver circuit, the current detection circuit, and the interface circuit are connected to the Beidou baseband circuit; and / or, The mainboard includes one or more of a power management circuit, a first storage medium and a first control circuit, wherein the first storage medium is used to store one or more of short message information, serial port information and configuration information, the power management circuit is used to manage the charge and discharge of the lithium battery and convert the power provided by the lithium battery into a preset DC voltage output, and the first control circuit is used to control and process peripherals, display screens and external interfaces, and exchange interface information protocols at the same time; and / or, The interface board includes a USB-TypeC interface circuit, and the USB-TypeC interface circuit includes one or more of 1pps, a first serial port, a second serial port, a Vbus and a D+ / D- interface. The first serial port is used for charging and debugging, the second serial port is used for exchanging information with an external device, the D+ / D- interface is used for exchanging information with the computer, and the Vbus interface is used for an AC power adapter to charge the terminal device.

3. The Beidou energy-saving device according to claim 2, characterized in that: The interface circuit includes one or more of 1pps, a third serial port, a fourth serial port, a first power supply voltage and a second power supply voltage. The interface circuit is used for interface and level conversion. The third serial port is used for injection and debugging. The fourth serial port is used for interacting with the mainboard. The first power supply voltage and the second power supply voltage receive the current output from the power management circuit. The first power supply voltage supplies power to the power conversion circuit. The second power supply voltage supplies power to the current detection circuit, the external port and the built-in L power amplifier circuit. and / or, The multi-mode multi-frequency transceiver circuit includes one or more of a transmission signal up-conversion modulation circuit, a reception signal down-conversion processing circuit and a register circuit, wherein the register is used to store configuration information of transceiver circuit parameters; and / or, The Beidou baseband circuit includes one or more of a second control circuit, other logic circuits and firmware; The other logic circuits and firmware are used to receive the intermediate frequency signal output by the down-conversion of the multi-mode multi-frequency transceiver circuit, calculate and output the position information, and send a short message baseband signal to the multi-mode multi-frequency transceiver circuit for modulation and output; The second control circuit is used to configure the transmission signal control word of the multi-mode multi-frequency transceiver circuit, and control the switching of the switch according to the current of the Beidou baseband circuit detected by the current detection circuit, so as to achieve switching access between the external antenna and the internal antenna; and / or, The power conversion circuit is used to convert the direct current output by the first power supply voltage in the interface circuit into different voltages to respectively power the low noise amplifier circuit, the switch, the multi-mode multi-frequency transceiver circuit, the current detection circuit and the Beidou baseband circuit.

4. The Beidou energy-saving device according to claim 3, characterized in that: The second control circuit is used for: When the current detected by the current detection circuit is less than the first preset threshold value, the switch is controlled to switch to the built-in antenna working mode, the switch connected to the L power amplifier circuit switches the built-in channel, the switch connected to the S low noise amplifier circuit switches the built-in channel and turns on the S low noise amplifier circuit, and the switch connected to the B3 low noise amplifier circuit switches the built-in channel and turns on the B3 low noise amplifier circuit, and the built-in antenna working mode is used to transmit regional short messages through the built-in L power amplifier circuit and receive Beidou satellite signals through the B3 low noise amplifier circuit; When the current detected by the current detection circuit is greater than or equal to the first preset threshold and less than or equal to the second preset threshold, the switch is controlled to switch to a mixed working mode of the internal antenna and the external antenna, the switch connected to the L power amplifier circuit switches the internal channel, the switch connected to the S low noise amplifier circuit switches the external channel and turns off the S low noise amplifier circuit, and the switch connected to the B3 low noise amplifier circuit switches the internal channel and turns on the B3 low noise amplifier circuit, the second preset threshold is greater than the first preset threshold, and the mixed working mode is used to transmit global short messages through the internal L power amplifier circuit, receive Beidou satellite signals through the B3 low noise amplifier circuit, and receive short message receipt signals through the external B2b antenna; When the current detected by the current detection circuit is greater than the second preset threshold value, the switch is controlled to switch to the external antenna working mode, the switch connected to the L power amplifier circuit switches the external channel, the switch connected to the S low noise amplifier circuit switches the external channel and turns off the S low noise amplifier circuit, and the switch connected to the B3 low noise amplifier circuit switches the external channel and turns off the B3 low noise amplifier circuit. In the external antenna working mode, global short messages or regional short messages are sent and received through an external ordinary antenna, and Beidou satellite signals are received through the external B3 low noise amplifier circuit.

5. The Beidou energy-saving device according to claim 2, characterized in that: The short message sending and receiving modes include external global short message, external regional short message and internal regional short message; For an external global short message, the configuration includes an external B2b antenna, an internal antenna, an internal L power amplifier, an internal B3 low noise amplifier, a multi-mode multi-frequency transceiver circuit, a Beidou baseband circuit, an interface circuit, a main board and an interface board, or an external common antenna, a multi-mode multi-frequency transceiver circuit, a Beidou baseband circuit, an interface circuit, a main board and an interface board; For built-in regional short messages, the configuration includes built-in antenna, built-in power amplifier, built-in S low noise amplifier, built-in B3 low noise amplifier, multi-mode multi-frequency transceiver circuit, Beidou baseband circuit, interface circuit, main board and interface board; For external regional short messages, the configuration includes an external ordinary antenna, a multi-mode and multi-frequency transceiver circuit, a Beidou baseband circuit, an interface circuit, a main board and an interface board.

6. The Beidou energy-saving device according to claim 1, characterized in that: The computer is also used to count the number of receipts of short messages received from the mainboard, and to count the message communication success rate based on the number.

7. The Beidou energy-saving device according to claim 1, characterized in that: The operations on the short message include calculating position information, receiving short messages and sending short messages. The word length of the short message sent is less than or equal to a preset number of Chinese characters, and different transmission rates are supported. The positioning accuracy of the calculated position information is that the error in the horizontal direction is less than or equal to a third preset threshold, and the error in the elevation direction is less than or equal to a fourth preset threshold.

8. A method for evaluating the endurance of the Beidou energy-saving device according to any one of claims 1 to 7, characterized in that: include: Determine the screen-on working power consumption of the terminal equipment in the Beidou energy-saving device; Determine the screen-off battery life of the terminal device according to the screen-on working power consumption; The total battery life of the Beidou energy-saving device is determined based on the preset screen-on working time and the screen-off battery life of the terminal device.

9. The method for evaluating the endurance of a flight according to claim 8, characterized in that: Determine the screen-on working power consumption of the terminal equipment in the Beidou energy-saving device, including: The screen-on working power consumption is calculated based on the screen-on instantaneous power consumption, screen-off instantaneous power consumption and preset screen-on working time of the terminal device, as well as the transmission duration of each location information report and the transmission frequency of each location information report.

10. The method for evaluating the endurance of a flight according to claim 9, characterized in that: The power consumption of the bright screen operation is calculated by the following formula: B=(P2+(P3-P2)×T1 / T2)×T3 Among them, B is the power consumption of the screen on; P2 is the instantaneous power consumption of the screen on, in watts; P3 is the instantaneous power consumption of the screen off, in watts; T1 is the transmission duration of each location information report, in seconds; T2 is the transmission frequency of each location information report, in seconds; T3 is the preset screen on working duration, in hours.

11. The method for evaluating the endurance of a flight according to claim 10, characterized in that: The screen-off battery life of the terminal device is determined according to the screen-on working power consumption by the following formula, including: T4 = (AB) / (P1 + (P3 - P1) × T1 / T2) Wherein, T4 is the screen-off battery life, A is the maximum capacity of the lithium battery, and P1 is the standby transient power consumption of the terminal device; The formula for the total endurance time T5 of the Beidou energy-saving device is: T5=T3+T4.

12. The method for evaluating the endurance of a flight according to claim 11, characterized in that: The battery life mode selection of the Beidou energy-saving device includes the battery life of the built-in antenna when the ambient temperature is less than the fifth preset threshold and the battery life of the external antenna when the ambient temperature is greater than or equal to the fifth preset threshold.

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