CN111398840A - Multi-power output normal indicating system - Google Patents
Multi-power output normal indicating system Download PDFInfo
- Publication number
- CN111398840A CN111398840A CN201811544773.0A CN201811544773A CN111398840A CN 111398840 A CN111398840 A CN 111398840A CN 201811544773 A CN201811544773 A CN 201811544773A CN 111398840 A CN111398840 A CN 111398840A
- Authority
- CN
- China
- Prior art keywords
- circuit
- power supply
- input
- photoelectric coupler
- nand gate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/40—Testing power supplies
Abstract
The invention discloses a multi-path power output normal indicating system, which comprises a photoelectric coupler circuit, a NAND gate circuit, a power supply circuit and a reverse amplifying circuit, wherein the NAND gate circuit is connected with the power supply circuit; the photoelectric coupler isolation circuit is used for isolating the voltage indication signal; the NAND gate circuit is used for carrying out logic processing on the input multi-path voltage indicating signals to generate one path of indicating signals; the inverting amplifying circuit mainly inverts the high and low levels output by the logic circuit, amplifies the current signal and drives an AD conversion circuit in the signal processing extension to sample. The invention can meet the requirement of normal indication of the power supply of the current secondary power supply system, has higher universality and portability, and completely meets the application requirement of normal indication of the power supply system of each power grade.
Description
Technical Field
The invention belongs to the technical field of power supplies, and particularly relates to a multi-path power supply output normal indication system.
Background
The power supply normal indication circuit is widely applied to power supply systems such as radars, altimeters and the like. The traditional power supply indicating system needs to transmit all power supplies to a console through cables for analog quantity detection, can accurately read the voltage output value of the power supplies through AD conversion, has very intuitive understanding on whether the power supplies work normally or not, and can only effectively monitor in a ground system; in the test process of the radar power supply system, the normal output condition of the power supply extension cannot be judged in a single-path analog quantity sampling mode, so that a single high-low level signal integrating multiple paths of output power supplies in the power supply system is required to be designed and provided for the signal processing extension, then AD conversion is carried out, and the working state of the power supply system is remotely measured through software. Compared with a traditional power supply indicating circuit, the scheme can indicate the working state of the power supply only through a single high-low level signal, does not record the specific amplitude of the voltage of a single-path output power supply in detail, is not visual enough, and is mainly used for the current relatively mature module power supply combination system.
Disclosure of Invention
The invention aims to provide a real-time multi-power output normal indication system.
In order to solve the technical problem, the multi-channel power output normal indication system provided by the invention adopts the following technical scheme:
the circuit comprises a photoelectric coupler circuit, a NAND gate circuit, a power supply circuit and a reverse amplifying circuit; the photoelectric coupler isolation circuit is used for isolating the voltage indication signal; the NAND gate circuit is used for carrying out logic processing on the input multi-path voltage indicating signals to generate one path of indicating signals; the inverting amplifying circuit mainly inverts the high and low levels output by the logic circuit, amplifies the current signal and drives an AD conversion circuit in the signal processing extension to sample.
The invention discloses a multi-path power output normal indication system, which develops a mode that the traditional power normal indication can only be displayed and measured on a measurement and control console through analog quantity remote measurement into a mode that the traditional power normal indication can be integrated and converted by a power system, multi-path power voltage signals are integrated into a single path of identifiable electric signals to be detected, normal indication high and low levels output by the power system are sampled and interpreted by software after being subjected to AD conversion of a signal processing branch machine, whether the power system is normal or not is monitored in real time, and the whole process is recorded. The invention can realize the normal indication function of any multi-channel power supply and save limited AD ports and processing flows for increasingly complex signal processing systems. The normal indication technology meeting the requirement of multi-path power supply output is provided for the development of increasingly complex phased array system radar technology.
Meanwhile, the invention realizes the miniaturization, modularization and integration design of the radar power supply system, and is convenient for the application of the radar power supply system in the radar system. The radar power supply extension system organically combines the power supply extension and the signal processing extension on the radar, carries out integrated design on normal indication signals of the power supply extension through a special circuit, carries out AD conversion, and records through a software system of the signal processing extension so as to effectively judge whether the power supply system works normally and meet the requirement of the radar on the power supply system.
Drawings
FIG. 1 is a schematic block diagram of a multi-channel power output normal indication system according to the present invention.
Detailed Description
The patent will be further explained with reference to the drawings.
Referring to fig. 1, the multi-channel power output normal indication system of the invention comprises a photoelectric coupler circuit, a nand gate circuit, a power supply circuit and a reverse direction amplification circuit; the photoelectric coupler isolation circuit comprises a voltage sampling resistor and a photoelectric coupler with the model of GH302-4, and is used for isolating a voltage indication signal; the NAND gate circuit comprises a pull-up circuit and a logic circuit and is used for carrying out logic processing on input multi-path voltage indicating signals and generating one path of indicating signals; the power supply circuit comprises a three-terminal voltage regulator and an input/output filter capacitor and converts an input power supply into a power supply required by the chip; the inverting amplification circuit mainly inverts the high and low levels output by the logic circuit and amplifies the current signal so as to ensure that an AD conversion circuit in the signal processing extension can be driven to sample.
The opto-coupler isolation circuit is as the simplest and most effective isolation circuit, and through the conduction characteristic of opto-coupler, only need provide the electric current about 5mA at the opto-coupler input end and can trigger the output end and switch on, and is simple swift, and response speed is fast, the requirement of the isolation conduction of adaptation normal indicating circuit that can be fine.
The isolation circuit of the photoelectric coupler comprises GH302-4 and a sampling resistor, wherein a high level and a low level (namely normal output or no output of a power supply) input by a preceding stage circuit are input into a light emitting diode at the input end of the photoelectric coupler after passing through the sampling resistor, and when the high level is input, namely normal output voltage of a power supply extension, input current conducts the output end of the photoelectric coupler through the light emitting diode; when a low level is input, namely the power extension has no output voltage, the input current of the optical coupler is 0, the light emitting diode cannot drive the output end of the optical coupler to be conducted, and the output end of the optical coupler is cut off at the moment.
The NAND gate comprises a 54HC30 high-speed CMOS 8 input NAND gate and an input pull-up circuit, the high level is clamped at +5V through the pull-up circuit, and when the front-stage optocoupler is conducted, the pull-up circuit transmits a high level signal to an input terminal of the NAND gate through an output end of the optocoupler; the power supply of the multi-output transmits high and low levels to 8 input channels of the NAND gate in the same way, and then carries out NAND logic conversion to output level to the lower circuit. The power supply voltage Vcc of the NAND gate is less than or equal to 7.0V.
In order to ensure that the power supply Vcc of the NAND gate circuit is in the recommended range, the voltage of the signal processing power supply on the power extension needs to be converted so as to meet the use requirement. The power supply circuit mainly comprises a three-terminal voltage regulator with the model number of JW78M05S and an input and output filter capacitor, wherein the filter capacitor is a 1uF ceramic chip capacitor and is designed according to the layout and wiring rule of the three-terminal voltage regulator, and an input +12V digital power supply is converted into a +5V power supply Vcc required by a chip.
The driving capability of high and low levels output by the NAND logic circuit is weak, so that the requirement of the signal processing hardware circuit on driving current cannot be met, therefore, a reversing amplification circuit is added between the output end of the NAND circuit and the signal processing extension, the reversing amplification circuit consists of a triode 3CG130C and a current-limiting resistor, the rated current output capability of the triode is 0.5A, and is greater than 10mA required by the signal processing extension. The low level input by the front stage circuit is input to the base electrode of the triode after passing through the current limiting resistor, and at the moment, the V of the PNP triodeEBWhen the voltage is 5V, the triode is conducted, and +5V voltage is output to the signal processing extension, and the power supply extension works normally; the high level input by the front stage circuit is input to the base electrode of the triode after passing through the current limiting resistor, and the PNP triode V at the momentEBCut off when being equal to 0VAnd outputting 0V voltage to the signal processing extension set, wherein the power supply extension set works abnormally.
The above description is only an example of the present invention and should not be taken as limiting the patent technology, and any modification and equivalents made within the spirit and principle of the patent technology should be included in the protection scope of the patent technology.
Claims (3)
1. A multi-power output normal indication system is characterized in that: the circuit comprises a photoelectric coupler circuit, a NAND gate circuit, a power supply circuit and a reverse amplifying circuit; the photoelectric coupler isolation circuit is used for isolating the voltage indication signal; the NAND gate circuit is used for carrying out logic processing on the input multi-path voltage indicating signals to generate one path of indicating signals; the inverting amplifying circuit mainly inverts the high and low levels output by the logic circuit, amplifies the current signal and drives an AD conversion circuit in the signal processing extension to sample.
2. The multiple power output normal indication system of claim 1, wherein: the photoelectric coupler isolation circuit comprises a photoelectric coupler and a sampling resistor, and high and low levels input by the preceding stage circuit are input into a light emitting diode at the input end of the photoelectric coupler after passing through the sampling resistor.
3. The multiple power output normal indication system of claim 1, wherein: the reverse amplifying circuit comprises a triode and a current limiting resistor, and the low level input by the preceding stage circuit is input to the base electrode of the triode after passing through the current limiting resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811544773.0A CN111398840A (en) | 2018-12-17 | 2018-12-17 | Multi-power output normal indicating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811544773.0A CN111398840A (en) | 2018-12-17 | 2018-12-17 | Multi-power output normal indicating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111398840A true CN111398840A (en) | 2020-07-10 |
Family
ID=71435827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811544773.0A Pending CN111398840A (en) | 2018-12-17 | 2018-12-17 | Multi-power output normal indicating system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111398840A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203942263U (en) * | 2014-07-18 | 2014-11-12 | 成都天奥信息科技有限公司 | Continuous wave navigation radar power supply over-voltage and over-current counnter attack protection system |
| CN104808087A (en) * | 2015-05-05 | 2015-07-29 | 江西洪都航空工业集团有限责任公司 | Power supply testing system for onboard advanced training equipment |
| CN205753334U (en) * | 2016-05-04 | 2016-11-30 | 中国船舶重工集团公司第七一○研究所 | A kind of novel arc protection system running state indicating circuit |
-
2018
- 2018-12-17 CN CN201811544773.0A patent/CN111398840A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203942263U (en) * | 2014-07-18 | 2014-11-12 | 成都天奥信息科技有限公司 | Continuous wave navigation radar power supply over-voltage and over-current counnter attack protection system |
| CN104808087A (en) * | 2015-05-05 | 2015-07-29 | 江西洪都航空工业集团有限责任公司 | Power supply testing system for onboard advanced training equipment |
| CN205753334U (en) * | 2016-05-04 | 2016-11-30 | 中国船舶重工集团公司第七一○研究所 | A kind of novel arc protection system running state indicating circuit |
Non-Patent Citations (1)
| Title |
|---|
| 姜小云 等: "基于STM32的新一代天气雷达远程监控系统设计", 《计算机技术与发展》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103413747B (en) | Space plasma measurement apparatus | |
| CN202814584U (en) | Temperature measuring system of temperature control device | |
| CN203688743U (en) | OLED device optical and electrical property testing system | |
| CN106896281A (en) | A kind of method of testing of the transient state common mode inhibition parameter to numeral isolation class device | |
| CN106289516A (en) | The control method of a kind of optical module received optical power detection and device thereof | |
| CN202614836U (en) | Wide voltage data acquisition device | |
| CN111398840A (en) | Multi-power output normal indicating system | |
| CN103368640A (en) | Improved system of expanding optical module digital diagnostic monitoring | |
| CN203551125U (en) | Over-temperature alarm circuit | |
| CN202085151U (en) | Current-to-voltage (I/V) converter circuit | |
| CN209514023U (en) | The normal instruction system of multiple power supplies output | |
| WO2012100457A1 (en) | Single photon counting system for detecting weak light of dielectric | |
| CN110927464B (en) | Online detection system for isolated power supply | |
| CN105137234A (en) | Multi-channel direct current analog detecting device | |
| CN103376156A (en) | Optical power collection system with software | |
| CN212378921U (en) | Thermocouple signal acquisition device | |
| CN209088518U (en) | A kind of hardware Over Current Protection System for bidirectional current output | |
| CN104737638A (en) | Garden shovel capable of measuring humidity | |
| CN203561333U (en) | Valve displacement detection device for large-scale gas turbine | |
| CN203965633U (en) | Intelligent probe system | |
| CN203590236U (en) | Automatic optical power control device | |
| CN203552374U (en) | Acousto-optic alarm device for serially connecting two-wire current loop 4-20MA | |
| CN201464647U (en) | Laser radar gate control circuit | |
| CN202421268U (en) | Overload indication and alarm circuit for digital multimeter | |
| CN200941107Y (en) | Digital oscilloscope having detection output of pass/failure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20200710 |