CN209821394U - Device for reducing power consumption of Beidou receiver - Google Patents
Device for reducing power consumption of Beidou receiver Download PDFInfo
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- CN209821394U CN209821394U CN201920241360.9U CN201920241360U CN209821394U CN 209821394 U CN209821394 U CN 209821394U CN 201920241360 U CN201920241360 U CN 201920241360U CN 209821394 U CN209821394 U CN 209821394U
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- beidou
- receiver
- sampling resistor
- power consumption
- beidou receiver
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Abstract
The utility model discloses a reduce device of big dipper receiver consumption, include: the Beidou receiver, the Beidou active antenna and the Beidou active antenna are connected with the detection module; when the Beidou active antenna to be detected is not connected with the Beidou receiver, the voltage on two sides of the sampling resistor is 0 and is smaller than the threshold voltage, and the ALERT pin outputs a high-level signal, so that the Beidou receiver closes a satellite capturing channel and is in a standby state; when the active Beidou antenna to be detected is connected to the Beidou receiver, the voltage on two sides of the sampling resistor is larger than the threshold voltage, and the ALERT pin outputs a low-level signal, so that the Beidou receiver opens a corresponding satellite capturing channel and enters a normal working mode. The device for reducing the power consumption of the Beidou receiver solves the problem that the power consumption of the Beidou receiver is too high.
Description
Technical Field
The utility model relates to a reduce device of big dipper receiver consumption.
Background
The big dipper receiver especially hand-held type big dipper receiver is facing under the limited battery capacity's of hand-held type equipment the requirement to low-power consumption will be higher. Generally speaking, a Beidou satellite signal is down-converted to an intermediate frequency from a radio frequency through a radio frequency front end, a series of signal processing processes such as carrier stripping, pseudo code stripping, bit synchronization, subframe synchronization and the like are required to be carried out for demodulating a navigation message, the process is called signal acquisition, in the process, the signal acquisition is the first step of signal processing in a Beidou receiver, only when the signal acquisition is completed, the signal tracking is possible to start, accurate navigation message signals are obtained, at the moment, message demodulation can be carried out, pseudo range observation quantity is extracted, and baseband signal processing information such as carrier phase and Doppler observation quantity is extracted, so that positioning is completed. Therefore, the power consumption of the whole machine can be reduced by roughly dividing and completing a positioning process including the processes of capturing, tracking, PVT resolving and the like, and reducing the power consumption index of any step. One of the performance indexes of the Beidou receiver is called Time To First Fix (TTFF), the time spent on the receiver to realize effective positioning is measured, generally speaking, under the condition without auxiliary information, the time spent on signal capture by the Beidou receiver is the longest part of time spent in all TTFF links, so the signal capture speed is improved, namely the capture time is reduced or the Beidou receiver is stopped from signal capture function in an intermittent period, the important significance is realized on further reducing the power consumption of the Beidou receiver, the current method for reducing the power consumption of the receiver at home and abroad is to further optimize a capture strategy through a software algorithm, the capture speed is improved, and further the power consumption of the whole machine is reduced.
When the Beidou receiver works actually, the capturing satellite needs to operate at a high speed and with high power consumption, and some indoor or in-vehicle equipment still capture the satellite with high power consumption when not connected with the Beidou active antenna, so that the reduction of the power consumption of the whole system is not facilitated. Utilize the utility model discloses a method to reduce big dipper receiver's complete machine consumption.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the main technical problem that a reduce device of big dipper receiver consumption is provided, solve the too high problem of big dipper receiver consumption.
In order to solve the technical problem, the utility model provides a reduce device of big dipper receiver consumption, include: the Beidou receiver, the Beidou active antenna and the Beidou active antenna are connected with the detection module;
the Beidou active antenna access detection module comprises an INA301A1 chip, a sampling resistor and a Beidou active antenna to be detected;
the LIMIT and GND pins of the INA301a1 chip are respectively connected to two ends of a sampling resistor to read voltages at two sides of the sampling resistor; threshold voltage is arranged in the INA301A1 chip, and after the voltage at two sides of the sampling resistor is compared with the threshold voltage, the INA301A1 chip outputs a level signal from an ALERT pin;
when the Beidou active antenna to be detected is not connected with the Beidou receiver, the voltage on two sides of the sampling resistor is 0 and is smaller than the threshold voltage, and the ALERT pin outputs a high-level signal, so that the Beidou receiver closes a satellite capturing channel and is in a standby state;
when the active Beidou antenna to be detected is connected to the Beidou receiver, the voltage on two sides of the sampling resistor is larger than the threshold voltage, and the ALERT pin outputs a low-level signal, so that the Beidou receiver opens a corresponding satellite capturing channel and enters a normal working mode.
In a preferred embodiment: the Beidou receiver is a standard general Beidou receiver, supports a Beidou RNSS positioning function, and supports a frequency point of B1 or B3.
In a preferred embodiment: the open-drain alarm output of the INA301a1 chip is configured in a transparent mode.
In a preferred embodiment: the sampling resistor is a sampling resistor with known resistance and accuracy.
In a preferred embodiment: the Beidou active antenna to be detected is an active antenna with known power consumption.
Compared with the prior art, the technical scheme of the utility model possess following beneficial effect:
the utility model provides a pair of reduce device of big dipper receiver consumption, when the antenna was not gone into, big dipper receiver was automatic in standby state to greatly reduced big dipper receiver's consumption. The requirement of the current market on the Beidou receiver with lower power consumption is met.
Drawings
FIG. 1 is a diagram of the hardware connection of the present invention;
FIG. 2 is a signal flow diagram of the present invention;
fig. 3 is a circuit diagram of the detection circuit based on the INA301a1 chip of the present invention.
Detailed Description
The invention is further described with reference to the drawings and the detailed description.
An all-in-one over-current detection device can be realized by connecting a current source of 80uA in an INA301A1 chip to a limiting pin, setting the alarm threshold voltage of the circuit by connecting a single external resistor to the ground terminal, and combining an internal current sensor amplifier and a comparator. The INA301a1 chip determines the alarm signal output state by comparing the amplified voltage across the sampling resistor with the alarm threshold voltage. The amplified voltage on the two sides of the sampling resistor is the input voltage VOUT of the internal comparator, and the calculation formula is as follows:
VOUT＝ILOAD*RSENSE*Gain
in the formula ILOADIs the load current, RSENSEFor sampling resistance values, Gain is the INA301A1 chip Gain.
Alarm threshold voltage VLimit＝VOUTThe external resistor is:
RLimal＝VLimit/80uA
the internal comparator of the INA301a1 chip is a hysteresis comparator. When the output VOUT exceeds the alarm threshold voltage VLimit, the alarm signal is pulled low. The internal comparator input voltage VOUT must drop below the hysteresis level VLimit before the alarm signal will return to the nominal high state.
The reset pin is connected to ground and the circuit is set to transparent mode, i.e. the output alarm signal varies with the input signal related to the alarm threshold. For example, the alarm signal output pin is pulled low when the comparator input signal is above the alarm threshold. When the input signal falls below the alarm threshold, the ALERT signal ALERT output returns to a default high output state.
The alarm output response of the internal comparator of INA301a 1. When V isOUTBelow alarm threshold voltage VlimitThe comparator output ALERT is in the default high state. When V isOUTExceeds VlimitThe ALERT signal ALERT is pulled low.
Therefore, given chip gain, Beidou active antenna power consumption and sampling resistance values, the working current of the antenna can be calculated according to the power supply voltage, and then the input voltage V of the internal comparator is calculatedOUTAnd a threshold resistance Rlimit。
This embodiment has realized reducing big dipper receiver consumption based on above principle, and referring to fig. 1, this embodiment provides a device that reduces big dipper receiver consumption, includes: the Beidou receiver 3, the Beidou active antenna 1 and the Beidou active antenna access detection module 2;
with further reference to fig. 2-3, the beidou active antenna access detection module 2 includes an INA301a1 chip and a sampling resistor R1;
the LIMIT and GND pins of the INA301a1 chip are respectively connected to both ends of a sampling resistor R1 to read voltages at both sides of the sampling resistor R1; threshold voltage is arranged in the INA301A1 chip, and after the voltage at two sides of the sampling resistor R1 is compared with the threshold voltage, the INA301A1 chip outputs a level signal from an ALERT pin;
when the Beidou active antenna to be detected is not connected with the Beidou receiver, the voltage on two sides of the sampling resistor R1 is 0 and is smaller than the threshold voltage, and the ALERT pin outputs a high-level signal, so that the Beidou receiver closes a satellite capturing channel and is in a standby state;
when the active Beidou antenna to be detected is connected to the Beidou receiver, the voltage on two sides of the sampling resistor R1 is larger than the threshold voltage, and the ALERT pin outputs a low-level signal, so that the Beidou receiver opens a corresponding satellite capturing channel and is in a normal working state.
Therefore, through the circuit design, whether the Beidou receiver and the active antenna are normally connected or not can be visually seen very much, a user does not need to investigate the wiring condition of the outdoor antenna and the external antenna, the operation steps are simplified, and the maintenance time is saved. The Beidou receiver can directly identify whether the antenna is connected or not, and the system fault removal efficiency is greatly improved.
In this embodiment, the Beidou receiver is a standard general Beidou receiver, supports the Beidou RNSS positioning function, and supports the frequency point to be B1 or B3.
The open-drain alarm output of the INA301a1 chip is configured in a transparent mode.
The sampling resistor R1 is a sampling resistor with known resistance and accuracy.
The Beidou active antenna to be detected is an active antenna with known power consumption.
The device for reducing the power consumption of the Beidou receiver automatically stays in a standby state when the antenna is not connected, so that the power consumption of the Beidou receiver is greatly reduced. The requirement of the current market on the Beidou receiver with lower power consumption is met.
The above is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and variations or technical scope of the present invention disclosed may be easily conceived by those skilled in the art. Alternatives are intended to be within the scope of the invention. Therefore, the protection scope of the present invention should be determined by the scope of the claims.
Claims (5)
1. The utility model provides a reduce device of big dipper receiver consumption which characterized in that includes: the Beidou receiver, the Beidou active antenna and the Beidou active antenna are connected with the detection module;
the Beidou active antenna access detection module comprises an INA301A1 chip, a sampling resistor and a Beidou active antenna to be detected;
the LIMIT and GND pins of the INA301a1 chip are respectively connected to two ends of a sampling resistor to read voltages at two sides of the sampling resistor; threshold voltage is arranged in the INA301A1 chip, and after the voltage at two sides of the sampling resistor is compared with the threshold voltage, the INA301A1 chip outputs a level signal from an ALERT pin;
when the Beidou active antenna to be detected is not connected with the Beidou receiver, the voltage on two sides of the sampling resistor is 0 and is smaller than the threshold voltage, and the ALERT pin outputs a high-level signal, so that the Beidou receiver closes a satellite capturing channel and is in a standby state;
when the active Beidou antenna to be detected is connected to the Beidou receiver, the voltage on two sides of the sampling resistor is larger than the threshold voltage, and the ALERT pin outputs a low-level signal, so that the Beidou receiver opens a corresponding satellite capturing channel and enters a normal working mode.
2. The device of claim 1, wherein the device for reducing power consumption of the Beidou receiver is characterized in that: the Beidou receiver is a standard general Beidou receiver, supports a Beidou RNSS positioning function, and supports a frequency point of B1 or B3.
3. The device of claim 1, wherein the device for reducing power consumption of the Beidou receiver is characterized in that: the open-drain alarm output of the INA301a1 chip is configured in a transparent mode.
4. The device of claim 1, wherein the device for reducing power consumption of the Beidou receiver is characterized in that: the sampling resistor is a sampling resistor with known resistance and accuracy.
5. The device of claim 1, wherein the device for reducing power consumption of the Beidou receiver is characterized in that: the Beidou active antenna to be detected is an active antenna with known power consumption.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920241360.9U CN209821394U (en) | 2019-02-26 | 2019-02-26 | Device for reducing power consumption of Beidou receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920241360.9U CN209821394U (en) | 2019-02-26 | 2019-02-26 | Device for reducing power consumption of Beidou receiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209821394U true CN209821394U (en) | 2019-12-20 |
Family
ID=68873869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920241360.9U Active CN209821394U (en) | 2019-02-26 | 2019-02-26 | Device for reducing power consumption of Beidou receiver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209821394U (en) |
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2019
- 2019-02-26 CN CN201920241360.9U patent/CN209821394U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211230 Address after: 030000 No. 351, TIYU Road, Taiyuan City, Shanxi Province Patentee after: NORTH AUTOMATIC CONTROL TECHNOLOGY INSTITUTE Address before: 361000 No. 86, Xiyuan Road, Xinyang street, Haicang District, Xiamen City, Fujian Province Patentee before: XIAMEN JIUHUA COMMUNICATION EQUIPMENT FACTORY |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220429 Address after: 361000 No. 86, Xiyuan Road, Xinyang street, Haicang District, Xiamen City, Fujian Province Patentee after: XIAMEN JIUHUA COMMUNICATION EQUIPMENT FACTORY Address before: 030000 No. 351, TIYU Road, Taiyuan City, Shanxi Province Patentee before: NORTH AUTOMATIC CONTROL TECHNOLOGY INSTITUTE |