CN216285743U - GPS positioning system for electric meter - Google Patents
GPS positioning system for electric meter Download PDFInfo
- Publication number
- CN216285743U CN216285743U CN202121189339.2U CN202121189339U CN216285743U CN 216285743 U CN216285743 U CN 216285743U CN 202121189339 U CN202121189339 U CN 202121189339U CN 216285743 U CN216285743 U CN 216285743U
- Authority
- CN
- China
- Prior art keywords
- gps positioning
- radio frequency
- positioning system
- module
- positioning chip
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Position Fixing By Use Of Radio Waves (AREA)
Abstract
The utility model relates to a GPS positioning system for an electric meter, which comprises a GPS positioning chip, a power supply module for supplying power to the GPS positioning chip and a radio frequency antenna connected with the GPS positioning chip to receive external signals. The utility model improves the query efficiency of the positioning ammeter.
Description
Technical Field
The utility model relates to the technical field of electric energy meters, in particular to a GPS (global positioning system) for an electric meter.
Background
The electric meter products are more and more widely applied in the management terminal, and along with the explosive increase of the quantity, the difficulty is brought to the positioning query of the electric meters. At present, the positioning table meter is mainly searched manually, so that the cost is high and the efficiency is low.
SUMMERY OF THE UTILITY MODEL
In view of the above problems, an object of the present invention is to provide a GPS positioning system for an electric meter, which has the advantages of accurate query and positioning, high sensitivity, low power consumption, low cost, and improved positioning and query efficiency.
In order to achieve the purpose, the utility model adopts the technical scheme that: a GPS positioning system for an electricity meter, characterized by:
the system comprises a GPS positioning chip, a power supply module for supplying power to the GPS positioning chip, and a radio frequency antenna connected with the GPS positioning chip to receive external signals.
Further, the radio frequency antenna is an active antenna or a passive antenna.
Further, when the radio frequency antenna is an active antenna, the system further comprises a charging and discharging module which is respectively connected with the GPS positioning chip and the radio frequency antenna, stores energy when the positioning system is in a continuous positioning state but no external signal is input, and discharges to supply power to the radio frequency antenna together with the GPS positioning chip when the external signal is input.
Furthermore, the GPS positioning chip is connected with the radio frequency antenna through a matching network which ensures that the wiring impedance between the GPS positioning chip and the radio frequency antenna is within a set range to prevent signal loss.
Furthermore, the matching network comprises two capacitors and a first resistor, wherein one end of the first capacitor is connected with the radio frequency interface pin of the GPS positioning chip, while the other end is grounded, one end of the first resistor is connected with the radio frequency interface pin of the GPS positioning chip, while the other end is connected with a second capacitor, and the other end of the second capacitor is grounded.
Further, the system also comprises a TVS tube which is connected in parallel to two ends of the second capacitor and is used for electrostatic protection.
Furthermore, the charging and discharging module comprises an enabling control module connected with the GPS positioning chip to control the charging and discharging module to be switched on or switched off, an energy storage module and an amplifying module arranged between the enabling control module and the energy storage module to amplify current.
Further, the enabling control module is an NPN-type triode.
Further, the amplifying module is an MOS tube.
Further, the energy storage module is composed of three parallel capacitors.
Compared with the prior art, the utility model has the advantages that: by arranging the GPS positioning system for the electric meter, the problems of difficulty in positioning the electric meter, low efficiency and high cost are effectively solved; the charging and discharging module in the positioning system can be communicated with the GPS positioning chip to supply power for the radio-frequency antenna when an external signal is input, so that the normal work of the radio-frequency antenna is ensured, and the guarantee is provided for the positioning function.
Drawings
Fig. 1 is a schematic circuit diagram of a GPS positioning system according to the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
As shown in figure 1, the GPS positioning system for the electric meter comprises a GPS positioning chip 1, a power supply module 2 for supplying power to the GPS positioning chip 1, and a radio frequency antenna 3 connected with the GPS positioning chip 1 to receive external signals, so that the quick positioning of the electric meter can be realized by arranging the positioning system in the electric meter, the positioning and inquiring efficiency of the electric meter is improved, and the cost is saved.
The radio frequency antenna can be an active antenna or a passive antenna, obviously, the passive antenna means that the antenna does not need to be powered by a driving power supply, and on the contrary, the active antenna needs to be powered by the power supply, so that compared with the passive antenna, the signal receiving of the active antenna is more stable, and therefore, the active antenna is preferably adopted in the application.
Therefore, the GPS positioning system also comprises a charging and discharging module 4 which is respectively connected with the GPS positioning chip 1 and the radio frequency antenna 3, stores energy when the positioning system is in a continuous positioning state but no external signal is input, and discharges to supply power to the radio frequency antenna 3 together with the GPS positioning chip 1 when the external signal is input.
As shown in the figure, the pins 7 and 8 of the GPS positioning chip 1 are power supply 3.3V input pins, that is, the connection point of the power supply module 2, which can provide a maximum current of 100mA, and the typical value is 3.3V; the pin 9 is a system RESET pin, and when the RESET _ N of the GPS positioning chip 1 inputs a low-level pulse of more than 160ms, the RESET of the GPS positioning chip can be triggered, so that the pin 9 is suspended when not in use.
The 11 pins, that is, the ANT _ GNSS pin, are the radio frequency interface of the radio frequency antenna 3, and the impedance between the interface and the radio frequency antenna is required to be 50 Ω, so that no loss is caused when a radio frequency signal is input, and the radio frequency performance is ensured, which corresponds to the requirement that the impedance of the trace from the radio frequency interface channel to the radio frequency antenna needs to be controlled within the impedance range of 50 Ω, and therefore, the matching network 5 needs to be added in the middle.
The matching network 5 comprises two capacitors and a first resistor, wherein one end of the first capacitor C3 is connected to the radio frequency interface pin ANT _ GNSS of the GPS positioning chip 1, and the other end is grounded, one end of the first resistor R7 is connected to the radio frequency interface pin ANT _ GNSS of the GPS positioning chip 1, and the other end is connected to the second capacitor C4, and the other end of the second capacitor C4 is grounded, thereby forming a pi-type matching network.
In order to isolate static electricity, the matching network 5 is further provided with a TVS tube VD1 with ultra-low junction capacitance connected in parallel with two ends of the second capacitor C4. The GPS positioning chip 1 has 13 pins outputting 3.3V in the continuous positioning mode for RF antenna enabling control, and has 14 pins outputting low level in the standby mode for RF power supply pin to supply power to the active antenna.
Specifically, the charging and discharging module 4 includes an enabling control module 41 connected to the GPS positioning chip 1 to control the charging and discharging module 4 to be turned on or off, an energy storage module 42, and an amplifying module 43 disposed between the enabling control module 41 and the energy storage module 42 for current amplification.
In this embodiment, the enable control module 41 is an NPN transistor V1; the amplifying module 43 is a MOS transistor M1; the energy storage module 42 is composed of three parallel capacitors C5, C6 and C7, so that in the continuous positioning mode, when the ANT _ ON pin, namely pin 13, outputs a high level, V1 and M1 are simultaneously turned ON, the energy storage module 42 discharges to supply power to the radio frequency antenna 3 together with the pin VCC _ ANT _3P3, namely pin 14, while in the standby mode, the ANT _ ON pin outputs a low level, V1 and M1 are both in an off state, and the power supply of the radio frequency antenna 3 is cut off, thereby reducing the power consumption of the system.
The GPS positioning system is arranged for the ammeter, so that the problems of difficulty in positioning the ammeter, low efficiency and high cost are effectively solved; the charging and discharging module in the positioning system can be communicated with the GPS positioning chip to supply power for the radio-frequency antenna when an external signal is input, so that the normal work of the radio-frequency antenna is ensured, and the guarantee is provided for the positioning function.
While embodiments of the utility model have been shown and described, it will be understood by those skilled in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A GPS positioning system for an electricity meter, characterized by:
the system comprises a GPS positioning chip (1), a power supply module (2) for supplying power to the GPS positioning chip (1) and a radio frequency antenna (3) connected with the GPS positioning chip (1) to receive external signals.
2. The GPS positioning system for electricity meters of claim 1, wherein:
the radio frequency antenna (3) is an active antenna or a passive antenna.
3. The GPS positioning system for electricity meters according to claim 2, characterized in that:
when the radio frequency antenna (3) is an active antenna, the system further comprises a charging and discharging module (4) which is respectively connected with the GPS positioning chip (1) and the radio frequency antenna (3) and stores energy when the positioning system is in a continuous positioning state but no external signal is input and discharges to supply power to the radio frequency antenna (3) together with the GPS positioning chip (1) when the external signal is input.
4. The GPS positioning system for electricity meters of claim 1, wherein:
the GPS positioning chip (1) is connected with the radio frequency antenna (3) through a matching network (5) which ensures that the wiring impedance between the GPS positioning chip (1) and the radio frequency antenna (3) is within a set range to prevent signal loss.
5. The GPS positioning system for electric meters of claim 4, wherein:
the matching network (5) comprises two capacitors and a first resistor, wherein one end of the first capacitor (C3) is connected with a radio frequency interface pin (ANT _ GNSS) of the GPS positioning chip (1) and the other end is grounded, one end of the first resistor (R7) is connected with the radio frequency interface pin (ANT _ GNSS) of the GPS positioning chip (1) and the other end is connected with the second capacitor (C4), and the other end of the second capacitor (C4) is grounded.
6. The GPS positioning system for electric meters of claim 5, wherein:
the system also comprises a TVS tube (VD1) which is connected in parallel to the two ends of the second capacitor (C4) and is used for electrostatic protection.
7. The GPS positioning system for electric meters of claim 3, wherein:
the charging and discharging module (4) comprises an enabling control module (31) connected with the GPS positioning chip (1) to control the charging and discharging module (4) to be connected or disconnected, an energy storage module (32) and an amplifying module (33) arranged between the enabling control module (31) and the energy storage module (32) to amplify current.
8. The GPS positioning system for electric meters of claim 7, wherein:
the enabling control module (31) is an NPN type triode (V1).
9. The GPS positioning system for electric meters of claim 7, wherein:
the amplifying module (33) is an MOS (metal oxide semiconductor) tube (M1).
10. The GPS positioning system for electric meters of claim 7, wherein:
the energy storage module (32) is composed of three parallel capacitors (C5, C6 and C7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121189339.2U CN216285743U (en) | 2021-05-31 | 2021-05-31 | GPS positioning system for electric meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121189339.2U CN216285743U (en) | 2021-05-31 | 2021-05-31 | GPS positioning system for electric meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216285743U true CN216285743U (en) | 2022-04-12 |
Family
ID=81000945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121189339.2U Active CN216285743U (en) | 2021-05-31 | 2021-05-31 | GPS positioning system for electric meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216285743U (en) |
-
2021
- 2021-05-31 CN CN202121189339.2U patent/CN216285743U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109150203B (en) | Antenna switching circuit and antenna system | |
| CN103166604A (en) | On-chip clock generating circuit with lower power consumption | |
| CN104517957B (en) | Static discharge (ESD) circuit | |
| WO2013166895A1 (en) | Passive radio-frequency identification electrification reset circuit and passive radio-frequency identification tag | |
| US20120274390A1 (en) | Power supply circuit | |
| CN105024677A (en) | Rf switch circuit | |
| CN201323446Y (en) | Static-free handheld mobile device with soft USB function | |
| CN114089803B (en) | Power detection circuit with temperature compensation function and radio frequency front end module thereof | |
| CN216285743U (en) | GPS positioning system for electric meter | |
| CN105811892A (en) | Double-supply biasing circuit for mobile terminal | |
| CN216388333U (en) | Remote communication system for electric meter | |
| CN214846434U (en) | Band gap reference circuit, integrated circuit, radio device, and electronic apparatus | |
| CN215419641U (en) | Communication system | |
| CN211508882U (en) | Bootstrap starting circuit for widening input voltage range | |
| CN221007829U (en) | Active antenna state detection circuit | |
| CN205509983U (en) | Two supply bias circuit of mobile terminal | |
| US20200257048A1 (en) | Multiplexing device of transmission line, and electronic device | |
| CN110365099A (en) | A kind of battery and source of stable pressure switching power supply circuit applied to cube star | |
| CN210327602U (en) | Antenna interface circuit and vehicle-mounted remote communication terminal | |
| CN109004922A (en) | reset circuit | |
| CN216851375U (en) | Mobile power supply | |
| CN212965129U (en) | Differential sampling circuit for multi-path alternating current distribution voltage | |
| CN111865284B (en) | Single-pole multi-throw PIN tube switching circuit | |
| CN220820522U (en) | LDO circuit suitable for power supply of radio frequency power amplifier chip | |
| CN216356647U (en) | Portable low-noise amplifier with battery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |