CN209329727U - A kind of GNSS receiver power circuit - Google Patents
A kind of GNSS receiver power circuit Download PDFInfo
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- CN209329727U CN209329727U CN201822058971.8U CN201822058971U CN209329727U CN 209329727 U CN209329727 U CN 209329727U CN 201822058971 U CN201822058971 U CN 201822058971U CN 209329727 U CN209329727 U CN 209329727U
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- gnss receiver
- power supply
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Abstract
The utility model discloses a kind of GNSS receiver power circuit, GNSS receiver power circuit is applied to GNSS receiver, so that GNSS receiver carries out the detection of bridge earth's surface and obtains bridge earth's surface detection data, GNSS receiver power circuit includes external power supply detection circuit, super capacitor group and control chip, external power supply detection circuit is electrically connected with control chip, super capacitor group is electrically connected with control chip, wherein: external power supply detection circuit, when being in abnormal power-down state for the external power supply in GNSS receiver, power-off signal is transmitted to control chip；Chip is controlled, transmits power supply instruction for responding power-off signal, and to super capacitor group；Super capacitor group is powered for responding power supply instruction, and to GNSS receiver.Implement the utility model embodiment, GNSS receiver can be made to receive the supply current of normal size in external abnormity of power supply, the operation of record data is realized, thus the probability that the case where reducing loss of data occurs.
Description
Technical field
The utility model relates to electronic circuit technology fields, and in particular to a kind of GNSS receiver power circuit.
Background technique
Global Navigation Satellite System (GlobalNavigation Satellite System, GNSS) receiver is extensive
Applied to carrying out long-term detection to bridge earth's surface.Common, GNSS receiver needs to power by external power supply in use
To realize normal use.But in the power-off of external abnormity of power supply, it will lead to the corrupted data and loss in GNSS receiver.
Utility model content
The utility model embodiment discloses a kind of GNSS receiver power circuit, can make in external abnormity of power supply
GNSS receiver receives the supply current of normal size, the operation of record data is realized, thus the case where reducing loss of data
The probability of generation.
The utility model embodiment discloses a kind of GNSS receiver power circuit, the GNSS receiver power circuit application
In GNSS receiver, so that the GNSS receiver carries out the detection of bridge earth's surface and obtains bridge earth's surface detection data, the GNSS
Receiver power supply circuit includes external power supply detection circuit, super capacitor group and control chip, the external power supply detection electricity
Road is electrically connected with the control chip, and the super capacitor group is electrically connected with the control chip, in which:
The external power supply detection circuit is in abnormal power-down state for the external power supply in the GNSS receiver
When, power-off signal is transmitted to the control chip；
The control chip transmits power supply instruction for responding the power-off signal, and to the super capacitor group；
The super capacitor group for responding the power supply instruction, and is powered to the GNSS receiver.
As an alternative embodiment, in embodiments of the present invention, the GNSS receiver power circuit further includes
Capacitive detection circuit, the capacitive detection circuit are electrically connected with the super capacitor group, the capacitive detection circuit also with it is described
Control chip electrical connection, in which:
The capacitive detection circuit is measuring the super electricity for detecting the real-time voltage value of the super capacitor group
When the real-time voltage value of appearance group is lower than the first preset voltage value, shutdown command is transmitted to the control chip；
The control chip is also used to respond the shutdown command and controls the GNSS receiver shutdown.
As an alternative embodiment, in embodiments of the present invention, the GNSS receiver power circuit further includes
Charging circuit, the charging circuit are electrically connected with the control chip, in which:
The external power supply detection circuit is also used to be in normal power-up state in the external power supply of the GNSS receiver
When, power on signal is transmitted to the control chip；
The control chip is also used to respond the power on signal to the charging circuit and transmits charging instruction；
The charging circuit, will be between the external power supply and the super capacitor group for responding the charging instruction
Charging connection conducting, so that the external power supply charges to voltage threshold to the super capacitor group.
As an alternative embodiment, in embodiments of the present invention, the capacitive detection circuit is also used to measuring
When the real-time voltage value of the super capacitor group is greater than or equal to the first preset voltage value, refer to control chip transmission booting
It enables；
The control chip is also used to respond the power-on instruction control external power supply and supplies to the GNSS receiver
Electricity, so that the GNSS receiver is switched on.
As an alternative embodiment, in embodiments of the present invention, the charging circuit include buck controller with
And constant flow module, the buck controller are electrically connected with the constant flow module, the buck controller and the constant flow module are equal
It is electrically connected with the super capacitor group, the buck controller is electrically connected with the control chip, in which:
The external voltage that the external power supply inputs is depressurized to by the buck controller for responding the charging instruction
Starting voltage simultaneously exports the starting voltage to the super capacitor group, so that the super capacitor group is according to the starting voltage
It charges；
The constant flow module, for detecting the real-time voltage value of the super capacitor group and being exported to the buck controller
The real-time voltage value of the super capacitor group；
The buck controller is also used to the external voltage that the external power supply inputs being depressurized to target voltage, described
Target voltage be the super capacitor group real-time voltage value and fixed voltage incremental value and value so that the super capacitor group
It is charged with current constant mode, until the voltage increase of the super capacitor group is to the voltage threshold.
As an alternative embodiment, in embodiments of the present invention, the GNSS receiver power circuit further includes
Balanced detection circuit, the equilibrium detection circuit are electrically connected with the super capacitor group, the balanced detection circuit also with it is described
Control chip electrical connection, in which:
The equilibrium detection circuit, for being exported when the super capacitor group is in normal condition to the control chip
The steady state signal；
The control chip is also used to respond the steady state signal and exports the first prompting message；
The equilibrium detection circuit, is also used to make the super capacitor when the super capacitor group is in imbalance
Group capacitor is balanced, exports the fault status signal to the control chip when the super capacitor group is in malfunction；
The control chip is also used to respond the fault status signal and exports the second prompting message.
As an alternative embodiment, in embodiments of the present invention, the super capacitor group include several series connection and/
Or the super capacitor composed in parallel.
Compared with prior art, the utility model embodiment has the advantages that
In the utility model embodiment, GNSS receiver power circuit include external power supply detection circuit, control chip with
And super capacitor group.Wherein, control chip is responsible for responding in the case where the external power supply abnormal power-down of GNSS receiver external
The power-off signal of power sense circuit transmission simultaneously exports power supply instruction, and super capacitor group is responsible for the power supply instruction of response control chip
And GNSS receiver is powered.In the state of super capacitor group power supply, control chip is able to record surface displacement data.
Implement the utility model embodiment, because super capacitor has the ability of heavy-current discharge, can guarantee GNSS at low ambient temperatures
Receiver receives the supply current of normal size, the operation of record data is realized, thus the case where reducing loss of data generation
Probability.In addition, charge and discharge number is up to hundreds of thousands of because not chemically reacting in the thermal energy storage process of super capacitor
It is secondary, to make GNSS receiver that can use for a long time, keep the use of GNSS receiver more convenient.
Detailed description of the invention
In order to illustrate more clearly of the technical scheme in the embodiment of the utility model, will make below to required in embodiment
Attached drawing is briefly described, it should be apparent that, the drawings in the following description are merely some embodiments of the present invention,
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings
Other attached drawings.
Fig. 1 is a kind of schematic diagram of power circuit disclosed in the utility model embodiment；
Fig. 2 is the schematic diagram of another kind power circuit disclosed in the utility model embodiment；
Fig. 3 is the circuit diagram of another kind power circuit disclosed in the utility model embodiment (lacking control chip)；
Fig. 4 is the circuit diagram that chip is controlled in power circuit disclosed in Fig. 2.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
It clearly and completely describes, it is clear that described embodiment is only the utility model a part of the embodiment, rather than whole realities
Apply example.Based on the embodiments of the present invention, those of ordinary skill in the art institute without making creative work
The every other embodiment obtained, fall within the protection scope of the utility model.
It should be noted that term " includes " in the utility model embodiment and attached drawing and " having " and they are any
Deformation, it is intended that cover and non-exclusive include.Such as contain the process, method, system, product of a series of steps or units
Or equipment is not limited to listed step or unit, but optionally further comprising the step of not listing or unit, or can
Selection of land further includes the other step or units intrinsic for these process, methods, product or equipment.
The utility model embodiment discloses a kind of GNSS receiver power circuit, can make in external abnormity of power supply
GNSS receiver receives the supply current of normal size, the operation of record data is realized, thus the case where reducing loss of data
The probability of generation.It is described in detail below with reference to attached drawing.
Referring to Fig. 1, Fig. 1 is a kind of schematic diagram of GNSS receiver power circuit disclosed in the utility model embodiment,
The GNSS receiver power circuit is applied to GNSS receiver, so that GNSS receiver carries out the detection of bridge earth's surface with obtaining bridge
Table detection data.As shown in Figure 1, the GNSS receiver power circuit includes external power supply detection circuit 102, super capacitor group
103 and control chip 101, external power supply detection circuit 102 with control chip 101 be electrically connected, super capacitor group 103 with control
Chip 101 is electrically connected, in which:
External power supply detection circuit 102, when being in abnormal power-down state for the external power supply in GNSS receiver, to control
Coremaking piece 101 transmits power-off signal.
Chip 101 is controlled, transmits power supply instruction for responding power-off signal, and to super capacitor group 103.
Super capacitor group 103 is powered for responding power supply instruction, and to GNSS receiver.
In the utility model embodiment, GNSS receiver is often used external power supply when detecting surface data and is powered,
GNSS receiver is in normal detecting state at this time, and it is abnormal disconnected that after external power supply over-discharge or damage GNSS receiver can fall into
Electricity condition will be illustrated below by the normal detecting state of GNSS receiver to abnormal power-down state.External power supply by itself
Electricity when exhausting or being damaged, the voltage value of external power supply input GNSS receiver circuit is lower, and external power supply can detect
Voltage value to external power supply is lower than the second preset voltage value, and external power supply is in abnormal power-down state at this time.External power supply inspection
Slowdown monitoring circuit 102 transmits power-off signal to control chip 101.Control chip 101 receives power-off signal at this time, and to super capacitor
103 transmission power supply instruction of group.Super capacitor group 103 is powered after receiving power-off signal to GNSS receiver.
Wherein, by taking the external power supply battery of common 12V as an example, the second preset voltage value may be configured as 7V-10V, example
It such as may be configured as 7V, 7.5V, 8V, 8.5V, 9V, 9.5V, 10V.If the voltage value of external power supply is lower than the second preset voltage value
It is in abnormal power-down state, super capacitor group 103 starts to power to GNSS receiver.Preferably, the second preset voltage value is set
It is set to 8.9V.
Controlling chip 101 can be one chip microcomputer, preferably control 101 model MSP430F2122IPW of chip.
Super capacitor group 103 may include several super capacitors 1031 connected and/or composed in parallel, it is preferable that super electricity
Appearance group 103 is arranged in such a way that two series connection of super capacitor 1031 are in parallel with two super capacitors 1031.
Referring to Fig. 2, the structure that Fig. 2 is another kind GNSS receiver power circuit disclosed in the utility model embodiment is shown
It is intended to.
In the present embodiment, GNSS receiver power circuit further includes capacitive detection circuit 104, capacitive detection circuit 104
It is electrically connected with super capacitor group 103, capacitive detection circuit 104 is also electrically connected with control chip 101, in which: capacitive detection circuit
104, for detecting the real-time voltage value of super capacitor group 103, it is lower than first in the real-time voltage value for measuring super capacitor group 103
When preset voltage value, shutdown command is transmitted to control chip 101；Chip 101 is controlled, is also used to respond shutdown command control GNSS
Receiver shutdown.
Fig. 2 shows GNSS receiver power circuit in, likewise, when external power supply is in abnormal power-down state,
Super capacitor group 103 is powered to GNSS receiver.During super capacitor group 103 is powered GNSS receiver, control
Coremaking piece 101 also records currently detected surface data.When the real-time voltage value of super capacitor group 103 is lower than first
When preset voltage value, control chip 101 controls GNSS receiver shutdown.
Wherein, the first preset voltage value may be configured as 2V-4V, such as may be configured as 2V, 2.5V, 3V, 3.5V, 4V etc..It is excellent
Selection of land, the first preset voltage value are set as 3.6V.
In the present embodiment, charging circuit 105 is also electrically connected with control chip 101, in which:
GNSS receiver power circuit further includes charging circuit 105, and charging circuit 105 is electrically connected with control chip 101,
In:
External power supply detection circuit 102 is also used to when the external power supply of GNSS receiver is in normal power-up state, to
It controls chip 101 and transmits power on signal；
Chip 101 is controlled, is also used to respond power on signal to charging circuit 105 and transmits charging instruction；
Charging circuit 105 leads the charging connection between external power supply and super capacitor group 103 for responding charging instruction
It is logical, so that external power supply charges to voltage threshold to super capacitor group 103.
In the present embodiment, as shown in Fig. 2, the external power supply of over-discharge to be changed to new electricity after GNSS receiver shutdown
After measuring sufficient extraneous power supply, external power supply detection circuit 102 detects that the input voltage value of external power supply is greater than or equal to the
When two preset voltage values, charging circuit 105 can make external power supply carry out charging to super capacitor group 103 until voltage threshold.?
After super capacitor group 103 is fully charged, if abnormal power-down state occurs in external power supply, super capacitor group 103 can receive GNSS
Machine is powered, so that control chip such as is recorded and shut down to currently detected surface data at the movement, meets GNSS
Receipts machine records complete earth's surface detection data.
In the present embodiment, capacitive detection circuit 104 is also used to be higher than in the real-time voltage value for measuring super capacitor group 103
Or when being equal to the first preset voltage value, power-on instruction is transmitted to control chip 101；
Chip 101 is controlled, is also used to respond power-on instruction and controls external power supply to GNSS receiver power supply, so that GNSS connects
The booting of receipts machine.
After the external power supply of over-discharge is updated to the external power supply of electricity abundance, external power supply can be to super capacitor group 103
It charges, during the charging process, capacitive detection circuit 104 detects the real-time voltage value of super capacitor group 103, works as real-time voltage
When value is lower than the first preset voltage value, GNSS receiver is still in off-mode.When real-time voltage value is greater than or equal to first in advance
If when voltage value, GNSS receiver booting.After powering, external power supply is powered GNSS receiver, and continues to super
Grade capacitance group 103 charges, so that super capacitor group 103 charges to voltage threshold, super capacitor group 103 is made to have enough electricity
Amount is to cope with abnormal power-down next time.
In the present embodiment, charging circuit 105 includes buck controller 1051 and constant flow module 1052, buck controller
1051 are electrically connected with constant flow module 1052, and buck controller 1051 is electrically connected with super capacitor group 103 with constant flow module 1052,
Buck controller 1051 is electrically connected with control chip 101, in which:
The external voltage that external power supply inputs is depressurized to starting voltage for responding charging instruction by buck controller 1051
And starting voltage is exported to super capacitor group 103, so that super capacitor group 103 charges according to starting voltage；
Constant flow module 1052, for detecting the real-time voltage value of super capacitor group 103 and being exported to buck controller 1051
The real-time voltage value of super capacitor group 103；
Buck controller 1051 is also used to the external voltage that external power supply inputs being depressurized to target voltage, target voltage
Be super capacitor group 103 real-time voltage value and fixed voltage incremental value and value so that super capacitor group 103 is with current constant mode
It charges, until the voltage increase of super capacitor group 103 is to voltage threshold.
As shown in Fig. 2, buck controller 1051 first will be external when external power supply charges to super capacitor group 103
The voltage step-down of power supply extremely can charge to super capacitor group 103 and not damage the starting voltage of super capacitor group 103.Then right
Super capacitor group 103 exports starting voltage to charge to super capacitor group 103.During the charging process, constant flow module 1052
Real-time voltage value is exported to buck controller 1051, so that buck controller 1051 inputs external power supply according to real-time voltage value
Voltage be down to real-time voltage value and fixed voltage incremental value and value, be buck controller 1051 to super capacitor group 103
The target voltage of output can be higher than always real-time voltage value.Until the voltage increase of super capacitor group 103 stops to voltage threshold
Charging.By the way of constant-current charge, electric current is constant during the charging process, to protect super capacitor group 103 not filled by excessive
Electric current is damaged, and external power supply is also protected not damage because exporting excessive output electric current simultaneously.
Wherein, super capacitor group 103 by two string two and four super capacitors 1031 for, each super capacitor 1031 is
2.5V.The voltage threshold for being super capacitor group 103 is 5V.
GNSS receiver power circuit further includes balanced detection circuit 106, balanced detection circuit 106 and super capacitor group
103 electrical connections, balanced detection circuit 106 are also electrically connected with control chip 101, in which:
Balanced detection circuit 106, for being exported surely when super capacitor group 103 is in normal condition to control chip 101
Determine status signal；
Chip 101 is controlled, is also used to respond steady state signal and exports the first prompting message；
The equilibrium detection circuit 106 is also used to make when the super capacitor group 103 is in imbalance described super
103 capacitor of grade capacitance group is balanced, exports institute to the control chip 101 when the super capacitor group 103 is in malfunction
State fault status signal；
Chip 101 is controlled, is also used to respond fault status signal and exports the second prompting message.
Balanced detection circuit 106 is used for the fault condition of balanced super capacitor group 103 with detection super capacitor group 103,
Detecting the display screen of GNSS receiver when super capacitor group 103 is trouble-free can show that represent super capacitor group 103 good
Good icon.When detecting that super capacitor group 103 is in imbalance, such as a certain single-unit super-capacitor voltage is excessively high
When, then so that the single-unit super capacitor is discharged, is discharged to normal condition.Detecting that super capacitor group 103 is chronically at unevenness
Under weighing apparatus state, for example, a certain super capacitor 1031 damage etc. failures when, the display screen of GNSS receiver can show represent it is super
The picture of 103 failure of capacitance group prompts service personnel's replacement or repairs the super capacitor group 103.
Refer to Fig. 3 and Fig. 4, the GNSS receiver power circuit diagram that Fig. 3 and Fig. 4 are Fig. 2.
Wherein, external power supply detection circuit 102 is electrically connected with external power supply and control chip 101.The circuit at least wraps
Voltage detector component is included, voltage detector component model can be XC61CN2602MR.External power supply detection circuit 102 may also include electricity
Hinder R222, resistance R209, capacitor C237 and diode D16.The Vin input terminal of voltage detector component is connected to external power supply
The end VIN.The end Vout of voltage detector component is connected to the pin 26 of control chip 101, and is higher than in the voltage of external power supply
Or export high level ULVO signal to control chip 101 when being equal to the second preset voltage value, external power supply voltage lower than the
Low level ULVO signal is exported to control chip 101 when two preset voltage values.Each device is electrically connected in circuit.
Referring to Fig. 4, control chip 101 includes at least controller, controller model can be MSP430F2122IPW.Control
Chip 101 may also include resistance R247, resistance R220 capacitor C291-293, capacitor C301, crystal oscillator Y5, test port TP1 and TP2
And power supply circuit, power supply circuit include at least voltage-stablizer U44, diode U45, capacitor C334-335.Each device is equal in circuit
Electrical connection.
Control chip 101 is connected to super capacitor group 103.Super capacitor group 103 includes at least the super electricity of two strings two simultaneously
Hold 1031 (C201, C202, C272 and C273), following super capacitors 1031 refers to four super capacitors of two string two simultaneously
1031.Super capacitor group 103 may also include switching circuit 1032.Switching circuit 1032 can control whether super capacitor 1031 is put
Electricity.Switching circuit 1032 includes at least output switch U20, further includes resistance R142, resistance R138, test port TP3, row's needle
CON2, transistor Q5.Output switch U20 is connected to the pin 22 of control chip 101.High level is received in control chip 101
After ULVO signal, to the VBAT_PWRON signal of output switch U20 output high level, super capacitor group 103 is made to charge.It is controlling
After chip 101 receives low level ULVO signal, low level VBAT_PWRON signal is exported to output switch U20, makes super electricity
The 103 pairs of GNSS receiver electric discharges of appearance group.Each device is electrically connected in circuit.
Super capacitor 1031 is also attached to capacitive detection circuit 104, and the pin 18 of control chip 101 is also connected to capacitor inspection
Slowdown monitoring circuit 104.Capacitive detection circuit 104 includes at least voltage detector U33, and voltage detector model can be
XC61CN2602MR.Capacitive detection circuit 104 may also include resistance R211-212, resistance R221, capacitor C244.Capacitance detector
The port Vin connection output switch U20, capacitance detector the port Vout connection with control chip 101 pin 18.Capacitor inspection
The real-time voltage value that survey device will test super capacitor 1031 switchs to VBAT_GOOD signal and exports to control chip 101.Control core
Piece 101 can control the switching on and shutting down and record data of GNSS receiver according to VBAT_GOOD signal.In the power-offstate, it controls
Chip 101 can control GNSS receiver to execute boot action.Under open state, control chip 101 can control GNSS receiver
When the real-time voltage value of super capacitor group 103 slides from voltage threshold toward the first preset voltage value, surface displacement data are recorded；
When also caning be controlled in the real-time voltage value of super capacitor group 103 and continuing electric discharge by the first preset voltage value, shutdown movement is executed.Electricity
Each device is electrically connected in road.
Super capacitor 1031 is also attached to charging circuit 105.Charging circuit 105 includes at least buck controller 1051 and perseverance
Flow module 1052.Buck controller 1051 includes at least PWM chip U46, and buck controller 1051 may also include capacitor C336-
338, capacitor C340-343, resistance R262-265, inductance L18.Constant flow module 1052 includes at least operational amplifier U21A and two
Pole pipe D14, operational amplifier model can be LM2904VQDR.Constant flow module 1052 may also include 1053, resistance R145-149, electricity
Hold C154-156, capacitor C151.Charging circuit 105 may also include amplifier power supply circuit 1053, and amplifier power supply circuit 1053 is at least
Including U21B, it may also include triode Q6, capacitor C152-C153, diode D13.Amplifier power supply circuit can be used for putting for operation
Big device power supply.2 pins and 3 pins of the operational amplifier U21 of constant flow module 1052 are connected to super capacitor 1031, are also attached to
The PWM chip U46 of buck controller 1051.Each device is electrically connected in circuit.
Super capacitor 1031 is also attached to balanced detection circuit 106.Control chip 101 is also connected to balanced detection circuit
106.Balanced detection circuit 106 includes at least voltage detector U18 and U19, and voltage detector model can be XC61CN2602MR.
Balanced detection circuit 106 further includes resistance R110-111, R114, R120, R129, R137, R139-141, R266-269, metal-oxide-semiconductor
Q3-Q4, diode U47-U48.Voltage detector U18 is connect with super capacitor 1031 with U19.Voltage detector U18 also with
The pin 15 for controlling chip 101 connects, and voltage detector U19 is also connect with the pin 16 of control chip 101.It is super detecting
Steady state signal is transmitted to control chip 101 when capacitor 1031 is normal, then the aobvious of GNSS receiver can be controlled by controlling chip 101
Display screen shows the first prompt information, prompts super capacitor 1031 normal；It detects and is in imbalance in super capacitor 1031
When, such as the single-unit super capacitor 1031 electric discharge is then controlled in single-unit 1031 overtension of super capacitor；In super capacitor
1031 when being chronically at imbalance, then to control 101 transmission fault status signal of chip, then controlling chip 101 can control
The display screen of GNSS receiver shows the second prompt information, prompts super capacitor 1031 to have bad.Each device is electrically connected in circuit
It connects.
In conclusion implementing a kind of GNSS receiver power circuit disclosed in the utility model embodiment, in external power supply
When normal access, external power supply super capacitor group is set to charge using charging circuit, to save the super capacitor used after power-off
The electricity of group.In use, GNSS receiver is made to receive the supply current of normal size when external power supply exception, it is real
The operation for now recording data, thus the probability that the case where reducing loss of data occurs.
A kind of GNSS receiver power circuit disclosed in the utility model embodiment is described in detail above, herein
In apply specific case the principles of the present invention and embodiment be expounded, the explanation of above embodiments is only used
The core concept of the utility model is understood in help；At the same time, for those skilled in the art, according to the utility model
Thought, there will be changes in the specific implementation manner and application range, in conclusion the content of the present specification should not be construed as
Limitations of the present invention.
Claims (7)
1. a kind of GNSS receiver power circuit, which is characterized in that the GNSS receiver power circuit is received applied to GNSS
Machine, so that the GNSS receiver carries out the detection of bridge earth's surface and obtains bridge earth's surface detection data, the GNSS receiver power supply
Circuit includes external power supply detection circuit, super capacitor group and control chip, the external power supply detection circuit and the control
The electrical connection of coremaking piece, the super capacitor group are electrically connected with the control chip, in which:
The external power supply detection circuit, when being in abnormal power-down state for the external power supply in the GNSS receiver, to
The control chip transmits power-off signal；
The control chip transmits power supply instruction for responding the power-off signal, and to the super capacitor group；
The super capacitor group for responding the power supply instruction, and is powered to the GNSS receiver.
2. GNSS receiver power circuit according to claim 1, which is characterized in that the GNSS receiver power circuit
It further include capacitive detection circuit, the capacitive detection circuit is electrically connected with the super capacitor group, and the capacitive detection circuit is also
It is electrically connected with the control chip, in which:
The capacitive detection circuit is measuring the super capacitor group for detecting the real-time voltage value of the super capacitor group
Real-time voltage value be lower than the first preset voltage value when, to the control chip transmission shutdown command；
The control chip is also used to respond the shutdown command and controls the GNSS receiver shutdown.
3. GNSS receiver power circuit according to claim 2, which is characterized in that the GNSS receiver power circuit
It further include charging circuit, the charging circuit is electrically connected with the control chip, in which:
The external power supply detection circuit is also used to when the external power supply of the GNSS receiver is in normal power-up state,
Power on signal is transmitted to the control chip；
The control chip is also used to respond the power on signal to the charging circuit and transmits charging instruction；
The charging circuit, for responding the charging instruction for the charging between the external power supply and the super capacitor group
Connection conducting, so that the external power supply charges to voltage threshold to the super capacitor group.
4. GNSS receiver power circuit according to claim 3, it is characterised in that:
The capacitive detection circuit is also used to be greater than or equal to first in the real-time voltage value for measuring the super capacitor group default
When voltage value, power-on instruction is transmitted to the control chip；
The control chip is also used to respond the power-on instruction control external power supply and powers to the GNSS receiver,
So that the GNSS receiver booting.
5. GNSS receiver power circuit according to claim 3 or 4, which is characterized in that the charging circuit includes drop
Pressure controller and constant flow module, the buck controller are electrically connected with the constant flow module, the buck controller with it is described
Constant flow module is electrically connected with the super capacitor group, and the buck controller is electrically connected with the control chip, in which:
The external voltage that the external power supply inputs is depressurized to starting for responding the charging instruction by the buck controller
Voltage simultaneously exports the starting voltage to the super capacitor group, so that the super capacitor group is carried out according to the starting voltage
Charging；
The constant flow module, for detecting the real-time voltage value of the super capacitor group and to described in buck controller output
The real-time voltage value of super capacitor group；
The buck controller is also used to for the external voltage that the external power supply inputs to be depressurized to target voltage, the target
Voltage be the super capacitor group real-time voltage value and fixed voltage incremental value and value so that the super capacitor group is with perseverance
Stream mode charges, until the voltage increase of the super capacitor group is to the voltage threshold.
6. according to the described in any item GNSS receiver power circuits of claim 2-4, which is characterized in that the GNSS receiver
Power circuit further includes balanced detection circuit, and the equilibrium detection circuit is electrically connected with the super capacitor group, the balanced inspection
Slowdown monitoring circuit is also electrically connected with the control chip, in which:
The equilibrium detection circuit, stablizes for exporting when the super capacitor group is in normal condition to the control chip
Status signal；
The control chip is also used to respond the steady state signal and exports the first prompting message；
The equilibrium detection circuit is also used to make the super capacitor group electricity when the super capacitor group is in imbalance
Hold equilibrium, exports the fault status signal to the control chip when the super capacitor group is in malfunction；
The control chip is also used to respond the fault status signal and exports the second prompting message.
7. GNSS receiver power circuit according to claim 6, which is characterized in that the super capacitor group includes several
The super capacitor connected and/or composed in parallel.
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| CN201822058971.8U CN209329727U (en) | 2018-12-07 | 2018-12-07 | A kind of GNSS receiver power circuit |
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| CN201822058971.8U CN209329727U (en) | 2018-12-07 | 2018-12-07 | A kind of GNSS receiver power circuit |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116780710A (en) * | 2023-06-26 | 2023-09-19 | 上海时空奇点智能技术有限公司 | GNSS receiver charging control method and device |
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2018
- 2018-12-07 CN CN201822058971.8U patent/CN209329727U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116780710A (en) * | 2023-06-26 | 2023-09-19 | 上海时空奇点智能技术有限公司 | GNSS receiver charging control method and device |
| CN116780710B (en) * | 2023-06-26 | 2023-12-08 | 上海时空奇点智能技术有限公司 | GNSS receiver charging control method and device |
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