CN109888908A - A kind of navigation system time-division multiplex low cost precision voltage source - Google Patents
A kind of navigation system time-division multiplex low cost precision voltage source Download PDFInfo
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- CN109888908A CN109888908A CN201811554966.4A CN201811554966A CN109888908A CN 109888908 A CN109888908 A CN 109888908A CN 201811554966 A CN201811554966 A CN 201811554966A CN 109888908 A CN109888908 A CN 109888908A
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- voltage
- electric storage
- storage device
- low cost
- navigation system
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Abstract
The invention discloses a kind of navigation system time-division multiplex low cost precision voltage sources, including charging module, switching device, voltage check device, electric storage device and control module.The input termination exchange input of the charging module, output termination switching device.The switching device control electric storage device is charged by charging module or to extraneous power supply for electrical equipment, switching device connect and controlled with control module.The electric storage device is connect by switching device with charging module and extraneous electrical equipment.The voltage check device is connect with control module, and the real-time output voltage of electric storage device is transmitted to control module.Wherein, one charge/discharge unit is formed by two switching devices, a voltage check device and an electric storage device, and charge/discharge unit number is two or more, charge/discharge unit uses identical connection type to complete cycle charge discharge electric process, outwardly electrical appliance continued power.The present invention is at low cost, small in size, light-weight, and precision is high, noise is low.
Description
Technical field
The present invention relates to the technical field of precision voltage source device more particularly to a kind of navigation system time-division multiplex low cost essences
Cipher telegram source, it has the characteristics that low noise, continuous discharge, meets requirement of the navigation system to supply voltage, while having cost
Low, small in size, light-weight advantage, also can be used as industry, a kind of high-precision in scientific experiment, low noise power supply device.
Background technique
Common power in industry now, scientific experiment is broadly divided into Switching Power Supply, inverter, variable-frequency power sources, PC
Power supply, rectifier power source, adaptor power supplies, transformer frequency response etc., but these power supplys all suffer from power supply noise in use
The problem of.Power supply noise is one kind of electromagnetic interference, and the frequency spectrum of conducted noise substantially 10kHz~30MHz is reached as high as
150MHz, noise amplitude is up to 100mV.The interference of power supply noise, especially transient noise, the rate of climb is fast, the duration is short,
Voltage amplitude amplitude is high, randomness is strong, is also easy to produce severe jamming to microcomputer and digital circuit, influences the normal work of various electrical equipments
Make, other than causing added losses, so that motor is generated mechanical oscillation, noise and overvoltage, make transformer locally serious mistake
Heat makes the apparatus overheats such as capacitor, cable, insulation ag(e)ing, the lost of life, so that damage.In industry, scientific experiment, in order to
Precision is kept, meets production, experiment demand, it is often necessary to which it is even lower that noise amplitude is maintained at 5mv or less.But it is existing on the market
Some 2mV noisy powers improve circuit design mainly by power supply manufacturer, as using multiple-stage filtering, with reliable in quality, cost
Expensive switching tube, capacitor and inductor etc. means realize that design and manufacture craft are sufficiently complex, and price is very expensive.
It has been investigated that output voltage noise very little in the case where no external charge equipment of the lithium battery in mobile phone, generally below
3mV fully meets demand of the navigation system to power supply precision in industrial, scientific experiment.
Summary of the invention
The technical problem to be solved by the present invention is overcoming the shortcomings of existing power supply, two or more can be stored up by providing one kind
Electric installation carries out the power supply device of cycle charge-discharge, meets the output demand of low noise voltage.
The technical solution adopted by the present invention are as follows: a kind of navigation system time-division multiplex low cost precision voltage source, including charging mould
Block, switching device, voltage check device, electric storage device and control module, the input termination exchange input of the charging module are defeated
Switching device is terminated out；Switching device control electric storage device by charging module charging or to extraneous power supply for electrical equipment,
Switching device connect and is controlled with control module；The electric storage device is set by switching device and charging module and extraneous electricity consumption
Standby connection；The voltage check device is connect with control module, and the real-time output voltage of electric storage device is transmitted to control module；Institute
It states control module and receives the surveyed voltage of voltage check device, and be the on-off according to control switch device with this, thus switching two
The cycle charge discharge electricity condition of a or multiple electric storage devices, outwardly electrical appliance continued power.
Wherein, a charge/discharge unit is formed by two switching devices, a voltage check device and an electric storage device,
And charge/discharge unit number is two or more, charge/discharge unit uses identical connection type to complete cycle charge discharge electric process,
Outwardly electrical appliance continued power.
Wherein, the charging unit includes shell, power supply conversion portion, charging detection part and charge protection part,
Convert external 220V AC voltage to the DC charging voltage of electric storage device.
Wherein, the switching device is the switch for switching electric storage device charging and discharging state, optional solid-state relay,
Mosfet、IGBT。
Wherein, the voltage between the voltage check device real-time detection battery plus-negative plate, and will test result transmission
To control device as control parameter, the digital intelligent voltmeter of exportable surveyed voltage value can be selected.
Wherein, the electric storage device be battery, can externally output ripple it is small, the DC voltage of low noise.
Wherein, the control device can receive and analyze voltage check device institute measured data, with this control switch device
Work.
It is had the advantages that compared with prior art according to time-division multiplex low cost precision voltage source provided by the invention
(1) present invention is outwardly powered by power source internal battery by the charge and discharge process of control battery, overcomes tradition
Electric power output voltage noise is big, the not high weakness of precision；
(2) the configuration of the present invention is simple, component are few, easy to assembly, production cost is low, easy to popularize, can be used as navigation
The power supply device of system, at the same also can be used as industry, a kind of high-precision in scientific experiment, low noise power supply device.
Detailed description of the invention
Fig. 1 is a kind of structure principle chart of navigation system time-division multiplex low cost precision voltage source of the present invention；
Fig. 2 is a kind of specific embodiment structure chart of navigation system time-division multiplex low cost precision voltage source of the present invention；
Fig. 3 is a kind of working principle block diagram of navigation system time-division multiplex low cost precision voltage source of the present invention.
In Fig. 2: 1 is charger, and 2 be the first mosfet transistor, and 3 be the second mosfet transistor, and 4 be the first battery, 5
It is first voltage table for the second battery, 6,7 be second voltage table, and 8 be third mosfet transistor, and 9 be the 4th MOSFET crystal
Pipe, 10 be CPU.
Specific embodiment
With reference to the accompanying drawing and specific embodiment further illustrates the present invention.
As shown in Figure 1, a kind of structure principle chart of navigation system time-division multiplex low cost precision voltage source of the present invention, including fill
Electric appliance 1, the first mosfet transistor 2, the second mosfet transistor 3, the first battery 4, the second battery 5, first voltage table 6,
Two voltmeters 7, third mosfet transistor 8, the 4th mosfet transistor 9 and receivable voltmeter signal and control switch work
The CPU 10 of work.Wherein, the input terminal positive and negative anodes of charger are electrically connected with external communication, output head anode and mosfet transistor
Input terminal connection；The output end of first mosfet transistor 2 is connected with the anode of the first battery 4；Second mosfet transistor 3 with
The anode of second battery 5 is connected；First battery 4, the second battery 5 cathode connect with charger negative pole of output end；First voltage
Table 6, second voltage table 7 measurement end positive and negative anodes connect the positive and negative anodes of the first battery 4, the second battery 5 respectively；3rd MOSFET crystal
The input terminal of pipe 8 is connected with the anode of the first battery 4；The positive phase of the input terminal of 4th mosfet transistor 9 and the second battery 5
Even；Third mosfet transistor 8, the 4th mosfet transistor 9 output end always connect the anode externally exported as power supply；First
Battery 4, the second battery 5 cathode always connect the cathode externally exported as power supply；CPU 10 and the first mosfet transistor 2,
The control terminal connection of two mosfet transistors 3, third mosfet transistor 8, the 4th mosfet transistor 9 is to control on-off；The
One voltmeter 6, second voltage table 7 voltage signal output end be connected to CPU 10 to obtain battery real-time voltage.In this example
Mosfet transistor be enhanced N-channel MOS FET transistor, the pole D is as input terminal, and the pole S is as output end.Voltmeter is
The digital intelligent voltmeter of exportable surveyed voltage value.Charger fills the direct current that external 220V AC voltage is converted into battery
Piezoelectric voltage.CPU can receive and analyze voltmeter institute measured data, with the work of this control switch.
The principle of above scheme is: according to the voltage of two pieces of batteries, by CPU control the on-off of 4 mosfet transistors Lai
Control the charge and discharge of two pieces of batteries.Detailed process are as follows: digital voltmeter detects the voltage of two pieces of batteries first when original state, if
When two pieces of cell voltages are respectively less than a certain setting voltage value, CPU controls the first mosfet transistor 2 and is both turned on, control second
Mosfet transistor 3, third mosfet transistor 8, the 4th mosfet transistor 9 disconnect, and charge for the first battery 4, Zhi Dao
One battery, 4 voltage is higher than certain setting value, enters working condition later.If there is the voltage of one piece of battery lower than setting value, one piece of height
In setting value (here by taking 4 voltage of the first battery is higher than setting value as an example), then enter working condition.If first the 4, second electricity of battery
5 voltage of pond is above setting value, then controls the first mosfet transistor 2, the second mosfet transistor 3, third by CPU 10
Mosfet transistor 8 turns off, the conducting of the 4th mosfet transistor 9, the extraneous power supply of the second 5 pairs of battery, until 5 voltage of the second battery
Less than a certain setting value, then enter working condition.Into after working condition, CPU first controls the second mosfet transistor 3, third
Mosfet transistor 8 is connected, the first mosfet transistor 2 of control, the shutdown of the 4th mosfet transistor 9, at this time at the second battery 5
In charged state, the first battery 4 is in extraneous power supply state, first voltage table 6, second voltage table 7 real-time detection, two blocks of electricity
The output voltage in pond simultaneously feeds back to CPU 10.When 4 voltage of the first battery that first voltage table 6 detects is less than a certain setting voltage
When value, CPU 10 controls the first mosfet transistor 2, the 4th mosfet transistor 9 is connected, the second mosfet transistor 3 of control,
Third mosfet transistor 8 disconnects, and the second battery 5 enters discharge condition at this time, and the first battery 4 then enters charged state.When
When two voltmeters 7 detect that 5 voltage of the second battery is less than a certain setting voltage value, second mosfet transistor 3 of the control of CPU 10,
Third mosfet transistor 8 is connected, and the second mosfet transistor 3 of control, the 4th mosfet transistor 9 disconnect, at this time the first electricity
Pond 4 enters discharge condition, and the second battery 5 then enters charged state.Pass through first voltage table, the detection of second voltage table and CPU
Analysis and Control, so that two pieces of batteries is entered cycle charging discharge condition, so that it may meet the need of uninterrupted output low noise voltage
It asks.
When requiring one piece of cell voltage lower than setting voltage due to this programme, another piece of cell voltage is higher than setting electricity
Pressure, therefore there are certain requirements the charging rate and charger of battery, and fast charger and the fast battery of charge rate can be used.Separately
Outside, muti-piece circulating battery charging and discharging mode can also be used, to guarantee to the continual power supply of extraneous electrical appliance.
Claims (7)
1. a kind of navigation system time-division multiplex low cost precision voltage source, it is characterised in that: including charging module, switching device, electricity
Press detection device, electric storage device and control module, the input termination exchange input of the charging module, output termination switch dress
It sets；The switching device control electric storage device is charged by charging module or to extraneous power supply for electrical equipment, switching device and control
Molding block is connected and is controlled；The electric storage device is connect by switching device with charging module and extraneous electrical equipment；It is described
Voltage check device is connect with control module, and the real-time output voltage of electric storage device is transmitted to control module；Control module passes through
Control switch device is to switch the cycle charge discharge electricity conditions of two or more electric storage devices, outwardly electrical appliance continued power.
2. navigation system time-division multiplex low cost precision voltage source according to claim 1, it is characterised in that: switched by two
Device, a voltage check device and an electric storage device form a charge/discharge unit, and charge/discharge unit number is two
Or more, charge/discharge unit uses identical connection type to complete cycle charge discharge electric process, outwardly electrical appliance continued power.
3. navigation system time-division multiplex low cost precision voltage source according to claim 1, it is characterised in that: the charging
Device includes shell, power supply conversion portion, charging detection part and charge protection part, and external 220V AC voltage is converted
For the DC charging voltage of electric storage device.
4. navigation system time-division multiplex low cost precision voltage source according to claim 1, it is characterised in that: the switch
Device is the switch for switching electric storage device charging and discharging state, and solid-state relay, Mosfet, IGBT can be selected.
5. navigation system time-division multiplex low cost precision voltage source according to claim 1, it is characterised in that: the voltage
Voltage between detection device real-time detection battery plus-negative plate, and will test result and send control device to as control parameter,
The digital intelligent voltmeter of exportable surveyed voltage value can be selected.
6. navigation system time-division multiplex low cost precision voltage source according to claim 1, it is characterised in that: the storage
Device is battery, can externally output ripple it is small, the DC voltage of low noise.
7. navigation system time-division multiplex low cost precision voltage source according to claim 1, it is characterised in that: the control
Device can receive and analyze voltage check device institute measured data, with the work of this control switch device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811554966.4A CN109888908A (en) | 2018-12-19 | 2018-12-19 | A kind of navigation system time-division multiplex low cost precision voltage source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811554966.4A CN109888908A (en) | 2018-12-19 | 2018-12-19 | A kind of navigation system time-division multiplex low cost precision voltage source |
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| Publication Number | Publication Date |
|---|---|
| CN109888908A true CN109888908A (en) | 2019-06-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811554966.4A Pending CN109888908A (en) | 2018-12-19 | 2018-12-19 | A kind of navigation system time-division multiplex low cost precision voltage source |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005151795A (en) * | 2003-11-19 | 2005-06-09 | Milwaukee Electric Tool Corp | Method and system for charging battery |
| CN101242105A (en) * | 2008-03-17 | 2008-08-13 | 云南晶能科技有限公司 | Photovoltaic system intelligent complementary control charging/discharging method |
| CN107171395A (en) * | 2017-06-26 | 2017-09-15 | 联想(北京)有限公司 | A kind of charge/discharge control method, controller and electronic equipment |
-
2018
- 2018-12-19 CN CN201811554966.4A patent/CN109888908A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005151795A (en) * | 2003-11-19 | 2005-06-09 | Milwaukee Electric Tool Corp | Method and system for charging battery |
| CN101242105A (en) * | 2008-03-17 | 2008-08-13 | 云南晶能科技有限公司 | Photovoltaic system intelligent complementary control charging/discharging method |
| CN107171395A (en) * | 2017-06-26 | 2017-09-15 | 联想(北京)有限公司 | A kind of charge/discharge control method, controller and electronic equipment |
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Application publication date: 20190614 |