CN207765956U - Power supply unit with CAN communication and monitoring for protection function - Google Patents
Power supply unit with CAN communication and monitoring for protection function Download PDFInfo
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- CN207765956U CN207765956U CN201721818100.0U CN201721818100U CN207765956U CN 207765956 U CN207765956 U CN 207765956U CN 201721818100 U CN201721818100 U CN 201721818100U CN 207765956 U CN207765956 U CN 207765956U
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Abstract
The utility model discloses a kind of power supply units with CAN communication and monitoring for protection function; including anti-surge circuit, anti-impact circuit, reverse-connection preventing circuit, input voltage detection circuit, power module, temperature sensing circuit, output current detection circuit, output voltage detecting circuit, voltage reduction module, control module and CAN communication module; with input Anti-surging, protecting against shock and counnter attack connection function; output overcurrent defencive function, it can be achieved that the input voltage of power module, output voltage, output current and power supply unit temperature detection function.The data monitored can be transmitted by CAN bus.
Description
Technical field
The utility model is related to a kind of power supply, more particularly to a kind of power supply list with CAN communication and monitoring for protection function
Member.
Background technology
Application of the cab integrated radio communication on china railway is more than 8 years, in the daily transportation command of railway
In play increasingly important function.Since cab integrated radio communication input is used, with the hair of railway transportation cause
Exhibition, client constantly propose CIR new functional requirement, a series of relevant departments' successively issue equipment and application supplement of CIR
Technical specification, the function of constantly improve CIR, to being also had higher requirement in terms of power management, therefore, urgent need develops one kind
The power supply unit of relatively intelligentization, such as adapt to dislike slightly environment, power supply status can be detected, self can be protected in the event of a failure
Shield.
Invention content
Based on problem above, the utility model provides a kind of power supply unit with CAN communication and monitoring for protection function, tool
There are input Anti-surging, protecting against shock and counnter attack connection function, output overcurrent defencive function, input voltage, output with power module
Voltage, output current and power supply unit temperature detection function and have CAN bus data-transformation facility.Specific technical solution
It is a kind of power supply unit with CAN communication and monitoring for protection function, including anti-surge circuit, anti-impact circuit, anti-reverse electricity
Road, input voltage detection circuit, power module, temperature sensing circuit, output current detection circuit, output voltage detecting circuit,
Voltage reduction module, control module and CAN communication module；It is characterized in that：Circuit is connected as anti-surge circuit, reverse-connection preventing circuit, prevents
Impact circuit and input voltage detection circuit are sequentially connected, and are connect with control module through 12C interfaces, anti-impact circuit and power supply mould
Block input terminal connects, and power module outlet connects output voltage, current detection circuit controls mould through ADC interface and control module
Block connects, and power module outlet is also separately connected control module and CAN communication module through voltage reduction module, and control module is through CAN
Communication interface is connected with CAN communication module, and temperature-control circuit is connect through ADC interface with control module, CAN communication module with it is outer
Boundary interacts, and power module outlet returns extraneous 13.8V power supplies.
Principle be input voltage first pass around be made of varistor, gas-discharge tube, TVS pipe, N-MOS and rectifier bridge it is anti-
Surge, impact and reversal connection circuit and the input voltage detection circuit being made of I2C isolating chips, ADC chips, the voltage after detection
Data send control module to by I2C interface；Then power module output voltage 13.8V is examined by output electric current measure module
Output current is surveyed, output voltage is detected by output voltage detection module, the current and voltage data monitored is passed by ADC interface
Give control module；The temperature data detected simultaneously by the temperature sensing circuit that thermistor forms is passed also by ADC interface
Control module is given, last control module interacts the data being collected into the external world by CAN communication module.
The utility model has the beneficial effects that with input Anti-surging, protecting against shock and counnter attack connection function, input voltage measurement
Function, output overcurrent defencive function, output voltage, electric current and power supply unit temperature detection function, detection data is total by CAN
Line transfer function.Personnel easy to use are detected power supply unit state, and pinpointing the problems as early as possible is replaced and repaired in time,
It avoids causing damages and even injure.
Description of the drawings
Fig. 1 is the block diagram of the utility model.
Specific implementation mode
Understand the utility model in order to clearer, is described in detail below in conjunction with attached drawing.
As shown in Figure 1, the power supply unit with CAN communication and monitoring for protection function, by anti-surge circuit, protecting against shock electricity
Road, reverse-connection preventing circuit, input voltage detection circuit, power module, temperature sensing circuit, output current detection circuit, output electricity
Press detection circuit, voltage reduction module, control module and CAN communication module composition.
Each composition partial function is as follows：
1）, anti-surge circuit：It is made of varistor, gas-discharge tube, TVS pipe, can realize between resisting line ground ±
2000V, ± 1000V surges between line line
2）, anti-impact circuit：The delayed start-up circuit being made of high pressure N-MOS and capacitance resistance utilizes input voltage
It charges to the G electrode capacitances for being connected in parallel on N-MOS, to achieve the effect that delayed start-up N-MOS, utilizes the internal resistance of N-MOS before unlatching
Reduce input dash current, reaches protecting against shock effect.
3）, reverse-connection preventing circuit：Directionless characteristic is inputted using rectifier bridge itself, realizes input counnter attack connection function.
4）, input voltage detection circuit：It is made of divider resistance, I2C isolating chips and ADC chips, input voltage first passes through
It is acquired by ADC after crossing partial pressure, data transmission is gone out by I2C isolating chips after acquisition, realize detection.
5）, power module：Module with high-power output and output voltage overcurrent protection.
6）, temperature sensing circuit：It is made of the ADC of thermistor and control module, thermistor changes resistance value with temperature
It can change, corresponding voltage can also change, and ADC will be converted into temperature value after voltage acquisition by control module.
7）, output current detection circuit：It is made of the ADC of Hall current detection chip and control module, electric current passes through inspection
After surveying chip, chip can export corresponding variation voltage value, and ADC will be converted into current value after voltage acquisition by control module.
8）, output voltage detecting circuit：It is made of the ADC of divider resistance and control module, after voltage is by electric resistance partial pressure,
Acquired through ADC, after voltage value is converted by control module.
9）, voltage reduction module：It is realized by decompression chip, 13.8V is by being depressured chip, and voltage drop is as low as 3.3V.
10）, CAN communication module：Realize that control module is communicated with extraneous CAN bus by CAN communication chip.
11）, control module：It is made of arm processor and its peripheral circuit, realizes control to each detection circuit, data
It handles and is exchanged with exogenous data.
As shown in Figure 1, circuit is connected as anti-surge circuit, reverse-connection preventing circuit, anti-impact circuit and input voltage measurement electricity
Road is sequentially connected, and is connect with control module through 12C interfaces, anti-impact circuit is connect with power module input terminal, and power module is defeated
Outlet connection output voltage, current detection circuit are connect through ADC interface with control module control module, and power module outlet is also
It is separately connected control module and CAN communication module through voltage reduction module, control module connects through CAN communication interface and CAN communication module
It connects, temperature-control circuit is connect through ADC interface with control module, and CAN communication module is interacted with the external world, and power module outlet is also
Give external world's power supply 13.8V.
Principle is that input voltage first passes around Anti-surging, impact and reversal connection circuit and input voltage detection circuit, after detection
Voltage data control module is sent to by I2C interface；Then power module output voltage 13.8V passes through output electric current measure
Module detects output current, detects output voltage by output voltage detection module, the current and voltage data monitored passes through ADC
Interface sends control module to；The temperature data detected simultaneously by the temperature sensing circuit that thermistor forms is also by ADC
Interface sends control module to；The 13.8V voltage parts that power module exports are powered to extraneous, and another part is by being depressured mould
Block reduces the voltage to 3.3V and powers to control module and CAN communication module, and last control module passes through the data being collected into
CAN communication module is interacted with the external world.
Claims (1)
1. a kind of power supply unit with CAN communication and monitoring for protection function, including anti-surge circuit, anti-impact circuit, counnter attack
Connect circuit, input voltage detection circuit, power module, temperature sensing circuit, output current detection circuit, output voltage detection electricity
Road, voltage reduction module, control module and CAN communication module；It is characterized in that：Circuit be connected as anti-surge circuit, reverse-connection preventing circuit,
Anti-impact circuit and input voltage detection circuit are sequentially connected, and are connect with control module through 12C interfaces, anti-impact circuit and power supply
Module input connects, and power module outlet connects output voltage, current detection circuit is controlled through ADC interface and control module
Module connects, and power module outlet is also separately connected control module and CAN communication module, control module warp through voltage reduction module
CAN communication interface is connected with CAN communication module, and temperature-control circuit is connect through ADC interface with control module, CAN communication module
It is interacted with the external world, power module outlet returns extraneous 13.8V power supplies.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721818100.0U CN207765956U (en) | 2017-12-22 | 2017-12-22 | Power supply unit with CAN communication and monitoring for protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721818100.0U CN207765956U (en) | 2017-12-22 | 2017-12-22 | Power supply unit with CAN communication and monitoring for protection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207765956U true CN207765956U (en) | 2018-08-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721818100.0U Active CN207765956U (en) | 2017-12-22 | 2017-12-22 | Power supply unit with CAN communication and monitoring for protection function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207765956U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107968392A (en) * | 2017-12-22 | 2018-04-27 | 天津七二通信广播股份有限公司 | Power supply unit and implementation method with CAN communication and a variety of monitoring for protection functions |
| WO2021259187A1 (en) * | 2020-06-22 | 2021-12-30 | 宝星智能科技(上海)有限公司 | Daisy chain two-wire sensor measurement system and measurement method therefor |
-
2017
- 2017-12-22 CN CN201721818100.0U patent/CN207765956U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107968392A (en) * | 2017-12-22 | 2018-04-27 | 天津七二通信广播股份有限公司 | Power supply unit and implementation method with CAN communication and a variety of monitoring for protection functions |
| WO2021259187A1 (en) * | 2020-06-22 | 2021-12-30 | 宝星智能科技(上海)有限公司 | Daisy chain two-wire sensor measurement system and measurement method therefor |
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