CN113031469A - Power supply management and control device - Google Patents
Power supply management and control device Download PDFInfo
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- CN113031469A CN113031469A CN201911352963.7A CN201911352963A CN113031469A CN 113031469 A CN113031469 A CN 113031469A CN 201911352963 A CN201911352963 A CN 201911352963A CN 113031469 A CN113031469 A CN 113031469A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
Abstract
The invention relates to the field of circuit management, in particular to a power supply management and control device. A multi-path power supply is accessed through a signal input module, a power supply signal for processing each path is obtained and transmitted to the multi-path switch circuit module, and the power supply signals are transmitted to the A/D sampling module path by path; the A/D sampling module compares the acquired single-path power supply signal with a power supply threshold value stored by the micro-processing module, and if the power supply signal is abnormal, the micro-processing module controls the warning output module to give an alarm; if the power supply signal is normal, the microprocessor controls the A/D sampling module to obtain the next power supply signal for comparison so as to circularly monitor whether each power supply signal has a fault. The real-time and time-sharing monitoring of parameters such as voltage and current of a multi-channel power supply of the system is realized, the overall performance of the system can be improved, and the burden of a core processing unit in the complex circuit design is effectively reduced.
Description
Technical Field
The invention relates to the field of circuit management, in particular to a power supply management and control device.
Background
In the industrial field, a complex engineering instrument and equipment system mostly contains a multi-path high-precision stable power supply system. The traditional multi-circuit modules are isolated from each other and run independently, programming setting parameters are not supported, wiring is complex, faults are difficult to locate rapidly, and maintenance is difficult to perform abnormally. The single-circuit power supply parameter monitoring and warning device can position single-circuit faults in real time, and due to the multi-circuit property of the power supply of a complex system, the addition of an independent management and monitoring device for each circuit of power supply is not beneficial to system miniaturization and light weight and is not more beneficial to cost control.
Disclosure of Invention
In view of the defects of the prior art, the invention aims to provide a power supply management and control device, which aims to solve the problems that the existing multi-channel circuit modules are isolated from each other and run independently, do not support programming to set parameters, are complicated in wiring, difficult to quickly locate faults and difficult to maintain; the circuit fault can be located in real time by the single circuit, but due to the multi-path of the complex system power supply, the problem that the system is not miniaturized and light and the cost is not controlled is solved by additionally arranging an independent management monitoring device for each path of power supply.
The technical scheme adopted by the invention for solving the technical problems is as follows: provided is a power supply control device: the system comprises a signal input module, a multi-way switch circuit module, an A/D sampling module, a micro-processing module, a comparison monitoring module and an alarm output module; the signal input module is connected with a plurality of paths of power supplies, acquires and processes power supply signals of each path, and transmits the power supply signals to the multi-path switch circuit module; the multi-path switch circuit module transmits the power supply signals to the A/D sampling module path by path; the A/D sampling module compares the acquired single-path power supply signal with a power supply threshold value stored by the micro-processing module, and if the power supply signal is abnormal, the micro-processing module controls the warning output module to give an alarm; if the power supply signal is normal, the microprocessor controls the A/D sampling module to obtain the next power supply signal for comparison so as to circularly monitor whether each power supply signal has a fault.
Further, the signal input module comprises a power access unit and a signal sampling unit, wherein: the power supply access unit provides an interface for a plurality of power supplies so as to obtain a power supply signal of the plurality of power supplies and transmit the power supply signal to the signal sampling unit, and the signal sampling unit samples the power supply signal and transmits the power supply signal to the multi-way switch circuit module.
Furthermore, the signal input module further amplifies the signal input by the signal conditioning unit to transmit to the multi-way switch circuit module.
And further, the system also comprises a programming interface module which is used for setting the power supply threshold value of the multi-path power supply and transmitting the set power supply threshold value to the microprocessor module for storage and calling.
Further, a reference source module for providing a comparison reference for the A/D sampling module is also included.
Furthermore, the alarm module is externally connected with a buzzer or an I/O interface.
Further, the sampling signal unit is a sampling resistor.
Further, the signal conditioning unit is an amplifier composed of TC 911A.
Further, the A/D sampling module is an ADC chip.
Further, the micro-processing module adopts a C8051F582 microcontroller.
Has the advantages that: the invention provides a power supply management and control device, which is connected with a plurality of paths of power supplies through a signal input module, acquires and processes power supply signals of each path, and transmits the power supply signals to a multi-path switch circuit module to transmit the power supply signals to an A/D sampling module one by one; the A/D sampling module compares the acquired single-path power supply signal with a power supply threshold value stored by the micro-processing module, and if the power supply signal is abnormal, the micro-processing module controls the warning output module to give an alarm; if the power supply signal is normal, the microprocessor controls the A/D sampling module to obtain the next power supply signal for comparison so as to circularly monitor whether each power supply signal has a fault. The real-time and time-sharing monitoring of parameters such as voltage and current of a multi-channel power supply of the system is realized, the overall performance of the system can be improved, and the burden of a core processing unit in the complex circuit design is effectively reduced.
Drawings
Fig. 1 is a schematic diagram of a preferred structure of a power management and control apparatus of the present invention.
Fig. 2 is a schematic diagram of another preferred structure of the power management and control apparatus of the present invention.
Fig. 3 is a schematic structural diagram of an actual application of the power management and control apparatus of the present invention.
The reference numbers in the figures illustrate:
10. a signal input module; 11. a power supply access unit; 12. a signal sampling unit; 13. a signal conditioning unit; 20. a multi-way switch circuit module; 30. an A/D sampling module; 40. a microprocessor module; 50. a comparison monitoring module; 60. a warning output module; 70. a programming interface module; 80. and a reference source module.
Detailed Description
The present invention provides a power management and control device, which is described in further detail below to make the purpose, technical solution and effect of the present invention clearer and clearer. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1-2, two preferred power management and control devices of the present invention include a signal input module 10, a multi-way switch circuit module 20, an a/D sampling module 30, a micro-processing module 40, a comparison monitoring module 50, and an alarm output module 60; the signal input module 10 is connected to multiple power supplies, acquires and processes a power supply signal of each path, and transmits the power supply signal to the multiple switch circuit module 20; the multi-way switch circuit module 20 transmits the power supply signal to the a/D sampling module 30 path by path; the A/D sampling module 30 compares the acquired single-path power supply signal with the power supply threshold value stored in the micro-processing module 40, and if the power supply signal is abnormal, the micro-processing module 40 controls the warning output module 60 to give an alarm; if the power signal is normal, the microprocessor controls the a/D sampling module 30 to obtain the next power signal for comparison so as to circularly monitor whether each power signal fails.
Further, the signal input module 10 includes a power access unit 11 and a signal sampling unit 12, wherein: the power access unit 11 provides an interface for multiple power sources to obtain power signals of the multiple power sources and transmit the power signals to the signal sampling unit 12, and the signal sampling unit 12 samples the power signals and transmits the power signals to the multiple switch circuit module 20. Preferably, the signal input module 10 further amplifies the signal input by the signal conditioning unit 13 to transmit to the multi-way switch circuit module 20.
Further, the power management and control apparatus further includes a programming interface module 70 for performing power threshold setting on multiple power supplies and transmitting the set power threshold to the microprocessor module 40 for storage and calling.
Further, the power management and control apparatus further includes a reference source module 80 for providing a reference for the a/D sampling module 30.
In this embodiment, the power access unit 11 is used to provide a multi-channel power input structure as the input of the signal sampling unit 12, and the signal conditioning unit 13 is used to amplify and shape the power signal output by the signal sampling unit 12 as the input of the multi-channel fast switching circuit module. The multi-circuit switch module realizes the switching selection of multi-circuit power supplies, the output of the multi-circuit switch module is connected with the A/D sampling module 30, and the sampled power supply signal is compared with the reference of the reference source module 80 to provide a stably sampled power supply signal to be output to the comparison monitoring module 50 and the microprocessor module. The multi-path power supply is managed and set through a programming interface and is stored in the microprocessor module for calling. The microprocessor is connected with the comparison monitoring module 50 and the alarm output module, and the microprocessor compares the output of the comparison monitoring module 50 with the stored power supply threshold value so as to judge whether alarm output is needed.
The comparison monitoring module 50 provided in this embodiment can detect the voltage or current parameter values of multiple loads at the same time by setting the threshold values of the voltage or current parameters of each power supply based on a user, and warns the user through a warning device such as a buzzer externally connected to the warning module when the voltage or current parameter values reach the threshold values set by the user. Therefore, the whole system is high in practicability, high in accuracy, small in occupied size and convenient to integrate.
The microprocessor module is the core of the invention, dynamically tracks the voltage and current of the load measured by the user through setting, sampling and monitoring the voltage and current of each path of user, finds the abnormal state of the load voltage and current in time and controls and alarms in time. And monitoring the change of the load in real time, and accessing the state of the register port through the programming interface.
The user can set the programming interface module 70 to monitor multiple power supplies simultaneously, or can set the programming interface module to monitor the voltage and current of a single power supply sequentially through the bus. When the system is in a normal working mode, the A/D sampling module 30 is controlled by the bus to sequentially and circularly read the voltage and current parameters of each power supply until all power supply signals are read.
The alarm output module monitors the average value of the voltage and the current of each power supply, updates the average value of each corresponding power supply when the corresponding power supply is switched, and compares the average value with the alarm threshold value of the power supply, which is programmed and written into the power supply threshold value, so as to determine whether the average value is exceeded. If a certain power supply measured value exceeds a corresponding power supply threshold value, an external buzzer or an IO interface connected with the warning output module 60 is used for outputting warning.
Referring to fig. 3, which is a schematic structural diagram of the present invention applied in practice, the sampling signal module provided in this embodiment performs current sampling through a sampling resistor, preferably a precise high-power micro resistor, performs voltage sampling by using a precise bridge on two sides of the sampling resistor, and sends the voltage sampling to the weak signal conditioning unit 13 for voltage amplification. The signal conditioning circuit adopts a precise amplifier consisting of TC911A, the input offset voltage of the amplifier is 5uV, the temperature drift is 0.05 uV/DEG C, and the design requirement that the error of voltage and current is 0.30 percent can be met.
Furthermore, the a/D sampling module 30 is preferably a 16-bit ADC, and the AD7701, the ADC chip is a sigma-delta type analog-to-digital converter, and the ADC chip is internally composed of a second-order sigma-delta modulator and a 6-order gaussian low-pass digital filter, so that the characteristics of high resolution, good linearity, low cost, and the like can be realized, and the ADC chip is particularly suitable for monitoring the power supply voltage and current.
Further, the microprocessor unit MCU is preferably a C8051F852 microcontroller, which is a low power consumption main controller, and adopts 8051 as a kernel, and Flash, RAM, digital IO and I2C interfaces are embedded in an internal structure of the main controller, so as to facilitate data exchange with an external data interface circuit. And the data access of Flash is carried out through an I2C interface, and the data interaction of other main control management units is realized through an embedded monitoring program.
Through the power supply management and control device, a user can set the voltage or current threshold value of each power supply, detect the voltage or current value of the multipath load at the same time, and warn the user through an external buzzer and other warning devices when the voltage or the current reaches the threshold value set by the user. The working voltage of the device is 2V-5V, the detectable voltage range is 0-50V, the power is small, the energy consumption is low, the gain error is 0.30%, the monitoring high precision is guaranteed, the system size is small, and the integration is convenient.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A power supply management and control device is characterized by comprising a signal input module, a multi-way switch circuit module, an A/D sampling module, a micro-processing module, a comparison monitoring module and a warning output module; wherein the content of the first and second substances,
the signal input module is connected with a plurality of paths of power supplies, acquires and processes power supply signals of each path, and transmits the power supply signals to the multi-path switch circuit module; the multi-path switch circuit module transmits the power supply signals to the A/D sampling module path by path; the A/D sampling module compares the acquired single-path power supply signal with a power supply threshold value stored by the micro-processing module, and if the power supply signal is abnormal, the micro-processing module controls the warning output module to give an alarm; if the power supply signal is normal, the microprocessor controls the A/D sampling module to obtain the next power supply signal for comparison so as to circularly monitor whether each power supply signal has a fault.
2. The power management and control apparatus according to claim 1, wherein the signal input module includes a power access unit and a signal sampling unit, wherein:
the power supply access unit provides an interface for a plurality of power supplies so as to obtain a power supply signal of the plurality of power supplies and transmit the power supply signal to the signal sampling unit, and the signal sampling unit samples the power supply signal and transmits the power supply signal to the multi-way switch circuit module.
3. The power management and control device according to claim 2, wherein the signal input module further amplifies the signal input by the signal conditioning unit for transmission to the multi-way switch circuit module.
4. The power management and control device according to claim 1, further comprising a programming interface module configured to set a power threshold for multiple power sources and transmit the set power threshold to the microprocessor module for storage and call.
5. The power management and control apparatus of claim 1, further comprising a reference source module for providing a comparison reference for the a/D sampling module.
6. The power management and control device according to claim 1, wherein the alarm module is externally connected to a buzzer or an I/O interface.
7. The apparatus according to claim 2, wherein the sampling signal unit is a sampling resistor.
8. The power management and control device according to claim 2, wherein the signal conditioning unit is an amplifier made of TC 911A.
9. The power management and control device of claim 2, wherein the a/D sampling module is an ADC chip.
10. The power management and control device according to claim 2, wherein the microprocessor module is a C8051F582 microcontroller.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911352963.7A CN113031469A (en) | 2019-12-25 | 2019-12-25 | Power supply management and control device |
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| CN201911352963.7A CN113031469A (en) | 2019-12-25 | 2019-12-25 | Power supply management and control device |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101950476A (en) * | 2010-10-15 | 2011-01-19 | 四川省绵阳西南自动化研究所 | Multiway voltage signal monitoring device |
| CN104932380A (en) * | 2015-06-19 | 2015-09-23 | 中国船舶重工集团公司第七二六研究所 | Multi-mode and multi-channel power supply real-time monitoring system and method |
| CN204964720U (en) * | 2015-09-17 | 2016-01-13 | 广东杰创智能科技股份有限公司 | Multiway switch power module centralized monitoring device that area keeps apart |
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- 2019-12-25 CN CN201911352963.7A patent/CN113031469A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101950476A (en) * | 2010-10-15 | 2011-01-19 | 四川省绵阳西南自动化研究所 | Multiway voltage signal monitoring device |
| CN104932380A (en) * | 2015-06-19 | 2015-09-23 | 中国船舶重工集团公司第七二六研究所 | Multi-mode and multi-channel power supply real-time monitoring system and method |
| CN204964720U (en) * | 2015-09-17 | 2016-01-13 | 广东杰创智能科技股份有限公司 | Multiway switch power module centralized monitoring device that area keeps apart |
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Application publication date: 20210625 |