CN204129231U - The Big Dipper RDSS that low-voltage battery or small-power power are powered launches amplifier power supply circuit - Google Patents
The Big Dipper RDSS that low-voltage battery or small-power power are powered launches amplifier power supply circuit Download PDFInfo
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- CN204129231U CN204129231U CN201420548124.9U CN201420548124U CN204129231U CN 204129231 U CN204129231 U CN 204129231U CN 201420548124 U CN201420548124 U CN 201420548124U CN 204129231 U CN204129231 U CN 204129231U
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Abstract
The utility model discloses the Big Dipper RDSS that low-voltage battery or small-power power power and launch amplifier power supply circuit, it comprises system power supply circuit, power switch, capacitor charging circuit, emission power circuit and charging capacitor, the input of described system power supply circuit and capacitor charging circuit exports with power switch and is connected, power switch input is connected with power supply, the output of system power supply circuit is connected with the power supply input of RDSS system, the output of capacitor charging circuit is connected with charging capacitor input, the output of charging capacitor is connected with the input of emission power circuit, the output of emission power circuit is connected with transmitting power amplifier, the control inputs of emission power circuit exports with the control of RDSS system and is connected.The utility model increases super capacitor and capacitor charging circuit, reduce and launch the requirement of power amplifier to input power power and battery capacity, launch the stand-by time of power amplifier under extending low-voltage battery electric power thus supplied, the transmitting power amplifier that solution small-power power is powered launches unsuccessful problem.
Description
Technical field
The utility model relates to Big Dipper RDSS and launches amplifier power supply field, particularly relates to the Big Dipper RDSS that a kind of low-voltage battery or small-power power power and launches amplifier power supply circuit.
Background technology
BEI-DOU position system RDSS can send short messages and active location, and sending short messages and locating is all intermittent transmitting, and has the restriction of frequency, and the fastest frequency is 1 time/second, and a communications transmit time, one-time positioning launch time was less than 100mS no longer than 250mS.The power that during transmitting, amplifier power supply needs is comparatively large, and T-time electric current is at more than 3A when 5V for the transmitting power amplifier supply voltage of hand-held set, and that is T-time amplifier power supply at least will provide the power of 15W.
When general lithium battery is full of, voltage is 4.2V, and when normal temperature discharges, voltage can be low to moderate 3V.After battery is full of, when low temperature-40 DEG C, voltage is about 3V, and under low temperature, the internal resistance of cell also can increase.If directly powered to power amplifier by battery, add the efficiency of power circuit when cell voltage is 3V, the T-time at least needs battery to provide the electric current of 6A, and it is built-in and cause output voltage lower to add battery, and required electric current is larger.Even under normal temperature environment, when battery electric quantity does not also discharge, RDSS launches power amplifier and can not transmit, and can not make full use of the useful capacity of battery, under low temperature, situation is worse.And small-capacity cells just cannot make RDSS launch power amplifier successful launch at all.Just need to lengthen working hours to increase battery capacity.
Launch power amplifier when a small-power power to Big Dipper RDSS to power, such as peak power output is that the power supply of 10W is powered to Beidou subscriber machine, and subscriber computer at all cannot successful launch.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, the Big Dipper RDSS providing low-voltage battery or small-power power to power launches amplifier power supply circuit, extend Big Dipper RDSS under low-voltage battery electric power thus supplied and launch the stand-by time of power amplifier, solve Big Dipper RDSS that small-power power powers and launch power amplifier and launch unsuccessful problem.
The purpose of this utility model is achieved through the following technical solutions: the Big Dipper RDSS that low-voltage battery or small-power power are powered launches amplifier power supply circuit, it comprises system power supply circuit, power switch, capacitor charging circuit, emission power circuit and super capacitor, described system power supply circuit is connected with the output terminal of power switch with the power supply input of capacitor charging circuit, the input end of power switch is connected with power supply, the power supply of system power supply circuit exports and is connected with the power supply input of RDSS system, the power supply of capacitor charging circuit exports and is connected with super capacitor, the output of super capacitor is connected with the power supply input of emission power circuit, the power supply of emission power circuit exports and is connected with transmitting power amplifier, the control inputs of emission power circuit exports with the control of RDSS system and is connected.
Described charging capacitor is super capacitor.
The beneficial effects of the utility model are: the utility model adds super capacitor and capacitor charging circuit by launching in power amplification system at Big Dipper RDSS, reduce and launch power amplifier to the requirement of input power power, reduce and launch power amplifier to the requirement of battery capacity, the utility model extends Big Dipper RDSS under low-voltage battery electric power thus supplied and launches the stand-by time of power amplifier, solves Big Dipper RDSS that small-power power powers and launches power amplifier and launch unsuccessful problem.
Accompanying drawing explanation
Fig. 1 is that the utility model launches power amplification system block diagram;
Fig. 2 is the utility model capacitor charging circuit circuit diagram;
Fig. 3 is the utility model emission power circuit figure.
Embodiment
Below in conjunction with accompanying drawing, the technical solution of the utility model is described in further detail, but protection domain of the present utility model is not limited to the following stated.
As shown in Figure 1, the Big Dipper RDSS that low-voltage battery or small-power power are powered launches amplifier power supply circuit, it comprises system power supply circuit, power switch, capacitor charging circuit, emission power circuit and charging capacitor, described system power supply circuit is connected with the output terminal of power switch with the power supply input of capacitor charging circuit, the input end of power switch is connected with power supply, the power supply of system power supply circuit exports and is connected with the power supply input of RDSS system, the power supply of capacitor charging circuit exports and is connected with charging capacitor input, the output of charging capacitor is connected with the power supply input of emission power circuit, the power supply of emission power circuit exports and is connected with transmitting power amplifier, the control inputs of emission power circuit exports with the control of RDSS system and is connected.
Described charging capacitor is super capacitor.Super capacitor has another name called electrochemical capacitor, double layer capacitor or farad capacitor, has the features such as power density is high, the discharge and recharge time is short, have extended cycle life, operating temperature range is wide.
Need to support that Big Dipper RDSS transmitting power amplifier completes after super capacitor charging complete once to launch, such as charging capacitor is the super capacitor of a 5F/5.5V.
Launch the power amplifier T-time to be powered by super capacitor completely.Charge to super capacitor at a capacitor charging circuit of a super capacitor Front-end Design low speed paper tape reader static power disspation, the peak power that charging current can provide for electric energy according to battery capacity or dispatch from foreign news agency determines.
Described capacitor charging circuit is made up of charge controlling chip and peripheral circuit thereof, the power input V of charge controlling chip
inbe connected with external power terminal, the power output end V of charge controlling chip
outbe connected with charging capacitor, power output end V
outbe connected with the negative feedback end FB of charge controlling chip after the bleeder circuit dividing potential drop of resistance R1, resistance R2 composition, the power input V of charge controlling chip
inwith power output end V
outrespectively with filter capacitor C
in, C
outconnect.
As shown in Figure 2, low speed paper tape reader static power disspation capacitor charging circuit schematic diagram.
This capacitor charging circuit comprises U1 chip, inductance L 1, resistance R1, R2, R3, R4 and electric capacity C1, C2, C3, the power supply input of capacitor charging circuit inputs Vin with the power supply of U1 chip and holds, debugging MODE end is connected with switch S HDN end, capacitor charging circuit power supply input also by electric capacity C2 with dock, U1 chip PROG end by resistance R3 with dock, regulate the resistance of R3 can control capacittance maximum charging current, the SGNG end of U1 chip, PGND end with dock, U1 chip Vc end by the resistance R4 of parallel connection and electric capacity C3 with dock, first switch terminals SW1 of U1 chip is connected with the second end of convert SW2 by inductance L 1, the power supply of U1 chip exports Vout end and is connected with super capacitor, the power supply of U1 chip export Vout end by the resistance R1 of series connection and resistance R2 with dock, the power supply of U1 chip export Vout end also by electric capacity C1 with dock, the feedback FB end of U1 chip is connected with the mid point of resistance R1 and resistance R2.
Described U1 chip comprises the LTC3127 chip etc. of Linear company.
In this capacitor charging circuit, input voltage is 1.8V ~ 5.5V, and output voltage is 5V.The MODE end of U1 chip receives power input, capacitor charging circuit enters Burst Mode battery saving mode, under Burst Mode pattern, the quiescent dissipation of capacitor charging circuit is very low, extend stand-by time, make typical static input current be low to moderate for 35uA, output terminal VOUT directly receives on charging capacitor, divider resistance R1 and R2 should choose larger resistance, can reduce quiescent dissipation like this.
Described emission power circuit comprises power management chip, control module and peripheral circuit thereof composition.The control inputs of control module exports with the control of RDSS system and is connected, and receives the control signal of RDSS system.The control output of control module and the control end of the power management chip Enable Pin that namely works is connected, and controls the duty of power management chip.The power input V of power management chip
inbe connected with the output of charging capacitor, the power output end V of power management chip
outbe connected with the power input launching power amplifier.
As shown in Figure 3, emission power circuit theory diagrams.
Described emission power circuit comprises U2 chip, switch triode Q1 and resistance R1, described one end of resistance R1 is connected with the input of charging capacitor, the other end is connected with the work Enable Pin of U2 chip and the collector of switch triode Q1 respectively, the power input of U2 chip is also directly connected with super capacitor, the output terminal of U2 chip is connected with transmitting power amplifier, the base stage of switch triode Q1 is connected with the control end of RDSS system by a resistance, the emitter of switch triode Q1 with dock.
Described U2 chip comprises the TPS43000 chip etc. of TI company.
In this emission power circuit, the input voltage range of U2 chip is 2V ~ 6V, and input voltage VIN is directly received on super capacitor.The SYNC/SD end of U2 chip is the enable pin of work, and during high level, U2 chip quits work, and during low level, U2 chip is started working.The SYNC/SD end of U2 chip is connected with switch triode Q1, by the duty of switch triode Q1 control U2 chip,
The base stage of RDSS systems radiate control signal TX_FLAG to switch triode Q1, when control signal TX_FLAG is effective high level, the emitter and collector conducting of switch triode Q1, the SYNC/SD end of U2 chip is low level, U2 chip is started working, and super capacitor is powered for launching power amplifier by emission power circuit.
When RDSS system is not to emission power circuit transmission control signal, namely when control signal TX_FLAG is effective low level, the emitter and collector cut-off of switch triode Q1, electric current flows into the SYNC/SD end of U2 chip by resistance R1, namely the SYNC/SD end of U2 chip receives high level, and U2 chip quits work.
The principle of work that the Big Dipper RDSS that this low-voltage battery or small-power power are powered launches amplifier power supply circuit is as follows:
1, turn on the power switch to Big Dipper RDSS launch power amplifier power on, system power supply circuit is RDSS system power supply, capacitor charging circuit be super capacitor charging;
2, after super capacitor is full of, capacitor charging circuit is output current no longer, stops as super capacitor charging;
If 3 RDSS systems do not send emissioning controling signal to emission power circuit, emission power circuit is in halted state;
4, when RDSS system sends emissioning controling signal to emission power circuit, emission power circuit is started working, and makes super capacitor start electric discharge and provides electric energy for launching power amplifier;
5, after super capacitor starts electric discharge, capacitor charging circuit continues as super capacitor charging, until after super capacitor is full of, capacitor charging circuit is output current no longer, stops as super capacitor charging.
When after capacitor charging circuit no longer output current, capacitor charging circuit is in low speed paper tape reader static power disspation state.
Just charge to super capacitor immediately after Beidou subscriber machine powers on, when charging circuit after super capacitor charging complete is just in the low speed paper tape reader static power disspation state of no-output electric current, it is very little that this makes complete machine power increase, concerning negligible Beidou subscriber machine standby power.Big Dipper RDSS launches amplifier power supply when power amplifier is launched to be provided by super capacitor, completely not by the impact of input power power.After transmitting completes, super capacitor charging circuit charges until charging complete to super capacitor immediately.
Launch in power amplification system start operational process at Big Dipper RDSS, Big Dipper RDSS launches the power input sum that power amplifier complete machine power equals the normal operate power of system and capacitor charging circuit.
Because the charging current of capacitor charging circuit limits, the peak power of input when capacitor charging circuit charges to super capacitor is much smaller than the power required for systems radiate moment, and the normal operate power of system is also be far smaller than the power required for systems radiate moment.So power during systems radiate is much smaller than phylogenetic power under not having super capacitor situation.
Adding super capacitor and capacitor charging circuit in Big Dipper RDSS transmitting power amplification system, when using small-power power to power, is super capacitor charging by capacitor charging circuit, to reach the launch requirements launching power amplifier.
The utility model is by adding super capacitor and capacitor charging circuit, reduce and launch power amplifier to the requirement of input power power, also reduce and launch power amplifier to the requirement of battery capacity, extend the stand-by time of Beidou subscriber machine under low-voltage battery electric power thus supplied, solve Big Dipper RDSS that small-power power powers and launch power amplifier and launch unsuccessful problem.
Claims (2)
1. the Big Dipper RDSS that low-voltage battery or small-power power are powered launches amplifier power supply circuit, it is characterized in that: it comprises system power supply circuit, power switch, capacitor charging circuit, emission power circuit and charging capacitor, described system power supply circuit is connected with the output terminal of power switch with the power supply input of capacitor charging circuit, the input end of power switch is connected with power supply, the power supply of system power supply circuit exports and is connected with the power supply input of RDSS system, the power supply of capacitor charging circuit exports and is connected with charging capacitor input, the output of charging capacitor is connected with the power supply input of emission power circuit, the power supply of emission power circuit exports and is connected with transmitting power amplifier, the control inputs of emission power circuit exports with the control of RDSS system and is connected.
2. the Big Dipper RDSS that low-voltage battery according to claim 1 or small-power power are powered launches amplifier power supply circuit, it is characterized in that: described charging capacitor is super capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420548124.9U CN204129231U (en) | 2014-09-23 | 2014-09-23 | The Big Dipper RDSS that low-voltage battery or small-power power are powered launches amplifier power supply circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420548124.9U CN204129231U (en) | 2014-09-23 | 2014-09-23 | The Big Dipper RDSS that low-voltage battery or small-power power are powered launches amplifier power supply circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204129231U true CN204129231U (en) | 2015-01-28 |
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ID=52385576
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420548124.9U Active CN204129231U (en) | 2014-09-23 | 2014-09-23 | The Big Dipper RDSS that low-voltage battery or small-power power are powered launches amplifier power supply circuit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104880719A (en) * | 2015-06-12 | 2015-09-02 | 赵柯 | Beidou terminal utilizing artificial charging |
| CN105610222A (en) * | 2016-03-01 | 2016-05-25 | 中南民族大学 | Low-voltage emergency power supply circuit and emergency power supply method for battery unit |
-
2014
- 2014-09-23 CN CN201420548124.9U patent/CN204129231U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104880719A (en) * | 2015-06-12 | 2015-09-02 | 赵柯 | Beidou terminal utilizing artificial charging |
| CN105610222A (en) * | 2016-03-01 | 2016-05-25 | 中南民族大学 | Low-voltage emergency power supply circuit and emergency power supply method for battery unit |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |