CN202978234U - Fault-detection protection apparatus for DC high-frequency switch power supply - Google Patents
Fault-detection protection apparatus for DC high-frequency switch power supply Download PDFInfo
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- CN202978234U CN202978234U CN 201220666994 CN201220666994U CN202978234U CN 202978234 U CN202978234 U CN 202978234U CN 201220666994 CN201220666994 CN 201220666994 CN 201220666994 U CN201220666994 U CN 201220666994U CN 202978234 U CN202978234 U CN 202978234U
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Abstract
The design of the utility model is a fault-detection protection apparatus for a DC high-frequency switch power supply and the fault-detection protection apparatus is widely applied in electric power systems and communication systems. The apparatus consists of an over-temperature detection unit, an overvoltage detection unit, an over-current detection unit, a fan-fault detection unit, a DSP controller and a fault-signal transmission and processing unit. The apparatus is controlled by the DSP controller, can collect hot spot temperatures of the power supply in real time, detect whether the power supply is overvoltage or over-current and detect the fan fault. Once the above fault conditions are generated, the apparatus can upload fault signals to the DSP controller for protection and transmit the fault signals to the fault-signal transmission and processing unit. The fault-detection protection apparatus has the characteristics of stable work performance and reliable operation.
Description
Technical field
What the utility model designed is a kind of direct current high frequency switch power fault detect protective device that is widely used in electric power system, communication system.
Background technology
Along with the development of power electronic technology, the various kinds of equipment control system is also more and more higher to the requirement of power supply.When the power electronic equipment long-time running, improve control appliance power quality and reliability, improve the equipment service conditions and be absolutely necessary.Therefore, a kind of volume of research and development design is little, cost is low, for ease of maintenaince the high frequency switch power malfunction monitoring protective device with replacing is very necessary.In the direct current high frequency switch power, due to the impact of electrical network and field working conditions, very crucial effect has been played in the fault detect of DC power supply protection.In case DC power supply breaks down, if can not in time detect and protect or make corresponding processing, whole direct current high frequency switching rectifier module device probably damages.Design a kind of device for high frequency switch power fault detect protection, be used for detecting in real time hot(test)-spot temperature excess temperature, overvoltage, overcurrent, the fan trouble of power supply, system equipment can be worked and move.
Summary of the invention
The utility model discloses a kind of fault detect protection system for high frequency switch power.This device adopts digital signal processor DSP to control; it can the Real-time Collection power supply hot(test)-spot temperature; detect whether overvoltage of power supply, overcurrent whether; detect fan trouble; fault-signal can be uploaded to dsp controller protection in case produce above-mentioned failure condition, and fault-signal is sent to fault-signal transmission processing unit.
The purpose of this utility model is achieved in that a kind of direct current high frequency switch power fault detect protective device is comprised of excess temperature detecting unit, overvoltage detecting unit, over-current detection unit, fan trouble detecting unit, dsp controller, fault-signal transmission processing unit; it is characterized in that excess temperature detecting unit, overvoltage detecting unit, over-current detection unit, fan trouble detecting unit are connected with the dsp controller signal of telecommunication respectively, dsp controller is connected with the fault-signal transmission processing unit signal of telecommunication.
Excess temperature detecting unit of the present utility model, overvoltage detecting unit, over-current detection unit, fan trouble detecting unit send respectively the fault-signal that detects to dsp controller; carry out real-time signal capture between each pin of dsp controller; and the action of making the corresponding blocking pulse signal protects, and simultaneously the fault-signal that receives is sent to fault-signal transmission processing unit after through identification and shows and report to the police.
The chip that described dsp controller uses is the TMS320F28035PAGT type.
The temperaturecontrol sensor that described temperature control unit uses is the TMP75 type.
Description of drawings
Fig. 1 is power supply excess temperature detection cell circuit figure;
Fig. 2 is power supply overvoltage detection cell circuit figure;
Fig. 3 is power supply over-current detection unit circuit diagram;
Fig. 4 is fan trouble detecting signal unit circuit diagram;
Fig. 5 is the system circuit diagram of dsp controller;
Fig. 6 is system principle diagram.
Embodiment
The below is with reference to the accompanying drawings to further detailed explanation of the utility model:
A kind of direct current high frequency switch power fault detect protective device is comprised of excess temperature detecting unit, overvoltage detecting unit, over-current detection unit, fan trouble detecting unit, dsp controller, fault-signal transmission processing unit; excess temperature detecting unit, overvoltage detecting unit, over-current detection unit, fan trouble detecting unit are connected with the dsp controller signal of telecommunication respectively, and dsp controller is connected with the fault-signal transmission processing unit signal of telecommunication.Excess temperature detecting unit, overvoltage detecting unit, over-current detection unit, fan trouble detecting unit send respectively the fault-signal that detects to dsp controller; carry out real-time signal capture between each pin of dsp controller; and make the action such as corresponding blocking pulse and protect, simultaneously the fault-signal that receives is sent to fault-signal transmission processing unit after through identification and shows and report to the police.Dsp controller chip in this device; to adopt digital signal processor TMS320F28035PAGT to process and control; it can the Real-time Collection power supply hot(test)-spot temperature; whether overvoltage of power supply, overcurrent whether; whether blower fan breaks down; in case produce above-mentioned failure condition, this device can be uploaded to dsp controller with fault-signal by the fault signal of telecommunication that produces and identify and process, and protects demonstration and report to the police.
Concrete working condition is as follows:
1, excess temperature detects: accompanying drawing 1 is excess temperature detection cell circuit figure; this circuit uses the TMP75 temperature sensor to carry out bus communication by I2C pin SCL, the SDA of himself I2C pin SCL, SDA and dsp controller; the real time temperature digital quantity that TMP75 gathers is passed to dsp controller, if the excess temperature dsp controller namely can be made overheat protector.U402 is digital temperature sensor, and R413 ~ R416 is pull-up resistor, and C405 ~ C408 is electric capacity.SDA transfer of data pin connects the SDA pin of dsp controller, realizes the transmission of data; SCL clock pin connects the SDA pin of dsp controller, and 3.3VP network label represents 3.3V voltage, and the high-low level of the A0 of U402, A1, A2 pin forms its logical address.
2, overvoltage detects: accompanying drawing 2 is power supply overvoltage detection cell circuit figure, and U11A is operational amplifier in the drawings, and R64 ~ R67 is resistance, and C68, C69, C73, C74, C81 are electric capacity, and 2.5VS is 2.5V voltage.When electric power output voltage surpassed 300V, the output of operational amplifier can produce high-low level to be changed, and uploads dsp controller output overvoltage fault-signal.
3, over-current detection: accompanying drawing 3 is power supply over-current detection unit circuit diagram, R68 ~ R71 is resistance in the drawings, C70 ~ C72, C75 are electric capacity, U11B is operational amplifier, this integrated operational amplifier belongs to the double operational of single power supply, when electric power outputting current surpassed 26A, operational amplifier output terminal can produce high-low level to be changed, and uploads dsp controller output overcurrent fault-signal.
4, fan trouble input: accompanying drawing 4 is processed the transmitting element circuit diagram for the fan trouble signal, and R417 ~ R419 is resistance in the drawings, and C410 is electric capacity, and Q401 is triode, and D401 is Schottky diode.Collector electrode 3 pin of triode Q401 connect and draw resistance, the acquiescence high level, and when the 1 end group utmost point of triode was triggered conducting, the FAN_FAIL signal was dragged down by the high level of acquiescence, is set to low level.Be low level during the normal operation of fan trouble holding wire, can not trigger triode Q401, the FAN_FAIL signal sets high always, but when blower fan breaks down, fan trouble signal RD becomes the high level of maximum voltage 13.8V, trigger Q401 conducting FAN_FAIL signal and set low, pass to the information that the DSP high-low level changes, thereby judge fan trouble.
5, the DSP control unit: accompanying drawing 5 is system circuit diagrams of dsp controller, it is the key control unit of high frequency switch power supply system, for overvoltage, overcurrent, fan trouble, what DSP detected is the sudden change of level on pin corresponding to its each guard signal, in case fault occurs, fault detection board all can produce the signal of a sudden change, send the corresponding pin of DSP to, the pin of the detection failure that DSP is corresponding is received the signal that this level changes, which kind of fault has occured thereby judge, overvoltage and overcurrent belong to unrecoverable failure, locking pulse, Blowing stopper, block system relay, and fan trouble belongs to and can recover fault, and after fault-signal was eliminated, system opened machine from soft startup tache again, recovers normal operating conditions, for the temperature detection fault, DSP receives the digital quantity of TMP75 temperature sensor by the I2C bus, when the hot(test)-spot temperature in module during greater than 70 degrees centigrade, confirm first to disconnect relay after this situation, shut down locked, confirm that temperature drops to start again after 65 degrees centigrade of recovery points, resumes work.
6, fault-signal transmission processing unit: this part belongs to the monitor portion of fault detection board, DSP and monitoring unit ARM7 processor are by the communication modes of CAN bus, DSP sends to the corresponding state position of fault upper, human-computer interaction interface has been made in the upper monitoring unit, the indicator light of out of order detecting unit is put red, trouble-free indicator light is still green.This monitor portion also has pair function of module switch machine, also can see simultaneously and input voltage, electric current output voltage, electric current, blower fan duty ratio, the information such as ambient temperature and hot(test)-spot temperature No. ID of module; The output voltage that simultaneously also has adjustment module is to functions such as output voltage, electric current, current-limiting points calibrations.
Claims (3)
1. a direct current high frequency switch power fault detect protective device is comprised of excess temperature detecting unit, overvoltage detecting unit, over-current detection unit, fan trouble detecting unit, dsp controller, fault-signal transmission processing unit; it is characterized in that excess temperature detecting unit, overvoltage detecting unit, over-current detection unit, fan trouble detecting unit are connected with the dsp controller signal of telecommunication respectively, dsp controller is connected with the fault-signal transmission processing unit signal of telecommunication.
2. described a kind of direct current high frequency switch power fault detect protective device according to claim 1 is characterized in that: the chip model that described dsp controller uses is the TMS320F28035PAGT type.
3. a kind of direct current high frequency switch power fault detect protective device according to claim 1 is characterized in that: the temperature sensor model that described excess temperature detecting unit uses is the TMP75 type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220666994 CN202978234U (en) | 2012-12-06 | 2012-12-06 | Fault-detection protection apparatus for DC high-frequency switch power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220666994 CN202978234U (en) | 2012-12-06 | 2012-12-06 | Fault-detection protection apparatus for DC high-frequency switch power supply |
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| Publication Number | Publication Date |
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| CN202978234U true CN202978234U (en) | 2013-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220666994 Expired - Lifetime CN202978234U (en) | 2012-12-06 | 2012-12-06 | Fault-detection protection apparatus for DC high-frequency switch power supply |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104569850A (en) * | 2013-10-23 | 2015-04-29 | 上海航天设备制造总厂 | Switch power supply detection system circuit |
| CN108896931A (en) * | 2018-05-22 | 2018-11-27 | 绵阳市维博电子有限责任公司 | A kind of self-diagnosis system for track signal monitoring probe power working condition |
| CN109342842A (en) * | 2018-08-31 | 2019-02-15 | 北京北广科技股份有限公司 | A kind of fault detection method of antenna tuner |
-
2012
- 2012-12-06 CN CN 201220666994 patent/CN202978234U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104569850A (en) * | 2013-10-23 | 2015-04-29 | 上海航天设备制造总厂 | Switch power supply detection system circuit |
| CN108896931A (en) * | 2018-05-22 | 2018-11-27 | 绵阳市维博电子有限责任公司 | A kind of self-diagnosis system for track signal monitoring probe power working condition |
| CN109342842A (en) * | 2018-08-31 | 2019-02-15 | 北京北广科技股份有限公司 | A kind of fault detection method of antenna tuner |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130605 |
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| CX01 | Expiry of patent term |