CN207234493U - Railway wireless dispatching system double copies power supply and storage battery power supply administrative unit - Google Patents
Railway wireless dispatching system double copies power supply and storage battery power supply administrative unit Download PDFInfo
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- CN207234493U CN207234493U CN201721200788.6U CN201721200788U CN207234493U CN 207234493 U CN207234493 U CN 207234493U CN 201721200788 U CN201721200788 U CN 201721200788U CN 207234493 U CN207234493 U CN 207234493U
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- 239000004065 semiconductor Substances 0.000 claims description 15
- 238000012545 processing Methods 0.000 claims description 8
- 238000012544 monitoring process Methods 0.000 abstract description 7
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000005611 electricity Effects 0.000 description 5
- 238000004891 communication Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
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Abstract
It the utility model is related to a kind of railway wireless dispatching system double copies power supply and storage battery power supply administrative unit, including DC D/C powers chip, processor chips, temperature sensor chip, current detecting chip, externally fed DC 13.8V, through three supply inputs to tandem after power management unit together to externally fed, realize when at least one in three power supplies is normal can be that external equipment is powered, while 3 supply inputs are connected respectively to processor chips；Temperature sensor chip is detected ambient temperature and sends processor chips to；Current detecting chip is detected and pressure difference is transmitted to processor chips, processor chips are obtained by calculation charging current and adjust monitoring and adjustment of the duty cycle realization of PWM output signal to 3 charging current of storage battery power supply, beneficial effect is the function of realizing double copies power supply and storage battery while power supply, and Charge Management can be carried out to storage battery, carries out monitoring and state output in real time to each power supply and operating ambient temperature.
Description
Technical field
A kind of power supply power management unit is the utility model is related to, it is double standby more particularly to a kind of railway wireless dispatching system
Part power supply and storage battery power supply administrative unit.
Background technology
At present in China railways Radio Train Dispatch Communication System communication equipment generally by device external power supply AC 220V or DC 110V
It is that DC 13.8V are that each unit is powered inside equipment again by equipment internal electric source cell translation, to improve equipment power supply
Reliability, some equipment inside two power supply units of configuration break down as double copies Power Management Design in single power supply unit
When can ensure the normal work of equipment；To ensure that communication equipment still possesses certain continuous firing energy when externally fed powers off
Power, some equipment further provided with storage battery as stand-by power supply；If the confession electricity output of double copies power supply and storage battery is directly connected
It is connected to and is powered together for equipment other units, since two power supply units and storage battery power supply output voltage can not possibly reaches
It is completely the same, harmful effect can be produced each other, while storage battery is directly connected to power supply unit output meeting in storage battery short of electricity
Cause charging current excessive, there are security risk；In addition power supply unit can produce more heat at work, cause in equipment
Portion's temperature rise, easily makes equipment internal temperature when working long hours excessive, exists if device external function of environment heat emission condition is poor
Security risk.
The content of the invention
In view of problem existing in the prior art, in order to meet double copies power supply and storage battery while be each unit inside equipment
It is powered, and ensures storage battery charging safety and equipment safety, it is double that the utility model provides a kind of railway wireless dispatching system
Backup battery and storage battery power supply administrative unit, concrete technical scheme are：A kind of railway wireless dispatching system double copies power supply and
Storage battery power supply administrative unit, includes the processing of the DC-DC power source chip, model ATmega128 of model LM22670-5.0
Device chip, the temperature sensor chip of model LM75, the current detecting chip of model ADM4073T, the two of model SS34
Pole pipe, the triode of model 2SC2712, the metal-oxide-semiconductor of model MTD20P06HDL, it is characterised in that：The diode four
Parallel connection is one group, and the cathode of every group of diode connects power supply 1, power supply 2 and power supply 3 respectively, and anode tandem is set to outside together
Available electricity, power supply 1, power supply 2 and 3 supply input of powering are connected respectively to the ADC of processor chips after resistance R partial pressures and draw
Foot PF0, PF1 and PF2；Power supply after tandem is converted to DC 5V and is supplied for power management unit internal components by DC-DC power source chip
Electricity；PD0 the and PD1 pins of IIC interface SCL and SDA pin the difference connection processing device chip of temperature sensor chip；Three adapters
PWM output pins PB6, collector pin and the metal-oxide-semiconductor gate lead that emitter ground connection, base stage connect processor chips are connected to one
In the power supply for rising and being connected to together by the source electrode of pull-up resistor and metal-oxide-semiconductor after tandem, the drain electrode connection storage battery of metal-oxide-semiconductor supplies
Electric pin；Connect on storage battery power supply line 0.01 Ω resistance, the both ends of series resistance connect the voltage of current detecting chip respectively
Detect pin RS+ and RS-, the ADC pins PF3 of the pressure difference output pin OUT connection processing device chips of current detecting chip；Processing
The UART0 interface pins RXD0 of device chip connects external equipment with TXD0.
Principle：Realize that at least one power supply is just in power supply 1, power supply 2 and power supply 3 using the one-way conduction of diode
Can be that external equipment is powered when often；Ambient temperature is detected by temperature sensor chip；Pass through current detecting
Chip detects and processor chips adjust monitoring and adjustment of the duty cycle realization of PWM output signal to battery charging current；
Processor chips pass through UART serial ports by being detected the monitoring realized to three power source supplying voltages to ADC pin levels
Realize to external equipment output state information.
The beneficial effects of the utility model are：The function of double copies power supply and storage battery while power supply is realized, and can
Charge Management is carried out to storage battery, monitoring in real time is carried out to each power supply of railway wireless dispatching system and operating ambient temperature and
State output, improves the security that the power supply reliability of equipment and equipment use.
Brief description of the drawings
Fig. 1 is the utility model principle schematic diagram；
Fig. 2 is the utility model circuit diagram.
Embodiment
Understand the utility model in order to clearer, be described in detail below in conjunction with drawings and examples.
As shown in Figure 1, 2, a kind of railway wireless dispatching system double copies power supply and storage battery power supply administrative unit（Following letter
Claim power management unit）, including DC-DC power source chip, processor chips, temperature sensor chip, current detecting chip, two poles
Pipe, triode, metal-oxide-semiconductor；Wherein DC-DC power source chip uses ATmega128, temperature using LM22670-5.0, processor chips
Sensor chip using LM75, current detecting chip using ADM4073T, diode using SS34, triode using 2SC2712,
Metal-oxide-semiconductor uses MTD20P06HDL；Four parallel connections of diode are one group, and the cathode of every group of diode connects power supply 1, power supply 2 respectively
With power supply 3, anode tandem is powered to external equipment together, realizes that at least one power supply is in power supply 1, power supply 2 and power supply 3
It can be that external equipment is powered when normal, and shadow will not be produced to other power supplies when some or two power supply failures
Ring；The supply input of power supply 1, power supply 2 and power supply 3 is connected respectively to the ADC pins of processor chips after resistance R partial pressures
PF0, PF1 and PF2, processor chips realize the confession to power supply 1, power supply 2 and power supply 3 by carrying out voltage detecting to ADC pins
The monitoring of piezoelectric voltage；Power supply after tandem is converted to DC 5V and is supplied for power management unit internal components by DC-DC power source chip
Electricity；PD0 the and PD1 pins of IIC interface SCL and SDA pin the difference connection processing device chip of temperature sensor chip, temperature pass
Sensor chip is detected power management unit environment temperature, and temperature information is transmitted to processor core by IIC interfaces
Piece；Three adapter emitters are grounded, and base stage meets the PWM output pin PB6 of processor chips, and collector pin draws with metal-oxide-semiconductor grid
Foot links together and is connected to together by the source electrode of pull-up resistor and metal-oxide-semiconductor in the power supply after tandem, and the drain electrode of metal-oxide-semiconductor connects
Connect storage battery power supply pin；Connect on storage battery power supply line 0.01 Ω resistance, the both ends of series resistance connect current detecting respectively
The voltage sense pin RS+ and RS- of chip, the ADC of the pressure difference output pin OUT connection processing device chips of current detecting chip draw
Foot PF3；It can be supplied when powering 1 and 2 at least one normal power supply of power supply by the charging circuit that triode and metal-oxide-semiconductor form
Electric 3 storage batteries charge；Current detecting chip can be detected the voltage at series resistance both ends on storage battery power supply line, and
Pressure difference is transported to the ADC pin PF3 of processor chips, processor can calculate storage battery by pressure difference and institute's series impedance
Charging current, and by adjust processor chips PWM output signal Duty ratio control triode turn-on and turn-off so as to adjusting
The electric current of metal-oxide-semiconductor conducting is saved, so as to fulfill the monitoring and adjustment to 3 battery charging currents of powering；The UART0 of processor chips
Interface pin RXD0 connects external equipment with TXD0, and power supply 1, power supply 2 and power supply 3 are exported to external equipment as communication serial port
Supply voltage situation and ambient temperature situations.
Claims (1)
1. a kind of railway wireless dispatching system double copies power supply and storage battery power supply administrative unit, including model LM22670-
5.0 DC-DC power source chip, the processor chips of model ATmega128, the temperature sensor chip of model LM75, type
Number for the current detecting chip of ADM4073T, the diode of model SS34, the triode of model 2SC2712, model
The metal-oxide-semiconductor of MTD20P06HDL, it is characterised in that：
Described four parallel connections of diode are one group, and the cathode of every group of diode connects the power supply of power supply 1, power supply 2 and power supply 3 respectively
Input, anode tandem are powered to external equipment together；The supply input of power supply 1, power supply 2 and power supply 3 is after resistance R partial pressures
It is connected respectively to ADC pins PF0, PF1 and PF2 of processor chips；
Power supply after tandem is converted to DC 5V and powered for power management unit internal components by DC-DC power source chip；Temperature sensing
PD0 the and PD1 pins of IIC interface SCL and SDA pin the difference connection processing device chip of device chip；Three adapter emitters ground connection,
PWM output pins PB6, collector pin and the metal-oxide-semiconductor gate lead that base stage connects processor chips link together and by upper
The source electrode of pull-up resistor and metal-oxide-semiconductor is connected in the power supply after tandem together, the drain electrode connection storage battery power supply pin of metal-oxide-semiconductor；Store
Connect on battery powered line 0.01 Ω resistance, the both ends of series resistance connect the voltage sense pin RS of current detecting chip respectively
+ and RS-, the ADC pins PF3 of the pressure difference output pin OUT connection processing device chips of current detecting chip；Processor chips
UART0 interface pins RXD0 connects external equipment with TXD0.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721200788.6U CN207234493U (en) | 2017-09-19 | 2017-09-19 | Railway wireless dispatching system double copies power supply and storage battery power supply administrative unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721200788.6U CN207234493U (en) | 2017-09-19 | 2017-09-19 | Railway wireless dispatching system double copies power supply and storage battery power supply administrative unit |
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|---|---|
| CN207234493U true CN207234493U (en) | 2018-04-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107492944A (en) * | 2017-09-19 | 2017-12-19 | 天津七二通信广播股份有限公司 | Double copies power supply and storage battery power supply administrative unit and implementation method |
-
2017
- 2017-09-19 CN CN201721200788.6U patent/CN207234493U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107492944A (en) * | 2017-09-19 | 2017-12-19 | 天津七二通信广播股份有限公司 | Double copies power supply and storage battery power supply administrative unit and implementation method |
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