CN205003934U - Protection device is gathered to intelligence electric quantity - Google Patents
Protection device is gathered to intelligence electric quantity Download PDFInfo
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- CN205003934U CN205003934U CN201520775029.7U CN201520775029U CN205003934U CN 205003934 U CN205003934 U CN 205003934U CN 201520775029 U CN201520775029 U CN 201520775029U CN 205003934 U CN205003934 U CN 205003934U
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Abstract
The utility model discloses a protection device is gathered to intelligence electric quantity, including switching power supply, acquisition circuit, control circuit, protection circuit and treatment circuit, switching power supply inputs alternating voltage, and the output galvanic current is pressed, acquisition circuit gathers switching power supply's current -voltage information, forms analog voltage, control circuit includes the relay for the break -make of control source, the protection circuit includes the self -resuming fuse, treatment circuit operation analog voltage, export power supply's state parameter, the protection of control relay disconnection export power supply circuit produces the actuation of an alarm, the treatment circuit has the hardware interface with host computer communication. The utility model discloses can survey the physical parameter such as electric current, voltage of each power through host computer software in real time, during trouble such as take place the short circuit in the use, overflow, the circuit is with the automatic cutout power and send alarm sound, and there is the trouble in suggestion user power, and backstage software is makeed statistics of, evaluation and chart output, adopt the self -resuming fuse to carry out second floor protection, avoid frequently changing the main fuse.
Description
Technical field
The utility model relates to vocational education professional knowledge and skill training instruments used for education applied technical field, particularly relates to a kind of intelligent power and gathers protective device.
Background technology
Apprentice's table is advanced technology means and the one such as the combination of a kind of collection soft or hard, virtual reality fusion, collection knowwhy and professional skill operate and one, collection teach, learn, instruct, examine function with integrally, have that teacher easily teaches, student happyly learns, check and rate the practice teaching product of a kind of modern job education of the distinguishing feature such as just, robotization judge can be carried out to the training operation of student, examination process and operating result.
Along with country is to the continuous requirement of development of vocational education; the appearance of the new term such as " the real integration of reason ", " internet+" and " industry 4.0 "; new challenge is proposed to traditional experiment Practical training equipment; traditional Practical training equipment is outside out-put supply only; by traditional " fuse " carrier as emergency protection; this method realizes simply on hardware, reliable; but cannot to the electric current output feedack of power supply; user can't see the rigors of consumer to power supply, can not be suitable for the new period to the intelligentized requirement of teaching equipment.Not to physical quantity Real-time Collection and the monitoring such as voltage, electric current of power supply, fault for power supply appearance can not provide the judgement of fault type, can not transmit power parameter, can not combine with host computer, trouble shooting procedure is loaded down with trivial details, can not diagnose power fail intuitively and point out.
Summary of the invention
The utility model can not be suitable for the new period to the intelligentized requirement of teaching equipment for Practical training equipment traditional at present; not to physical quantity Real-time Collection and the monitoring such as voltage, electric current of power supply; fault for power supply appearance can not provide the judgement of fault type; can not transmit power parameter; can not combine with host computer; trouble shooting procedure is loaded down with trivial details, can not diagnose power fail intuitively and the deficiency such as prompting, provides a kind of intelligent power to gather protective device.The technical solution of the utility model is embodied as:
A kind of intelligent power gathers protective device, comprises switching power supply, Acquisition Circuit, control circuit, protection circuit and treatment circuit, switching power supply input ac voltage, the DC voltage of stable output; Acquisition Circuit gathers the current-voltage information of switching power supply; Control circuit is for controlling the break-make of power supply; The data for the treatment of circuit calculation process Acquisition Circuit, the state parameter of out-put supply, will control control circuit when circuit generation over current fault and protection circuit performs protection act.
Further illustrate as the utility model, the current sampling resistor that described Acquisition Circuit comprises chip and connects between switching power supply with load, the differential voltage at sampling resistor two ends carries out amplification process through chip internal, export the analog voltage be directly proportional to circuital current at chip output, analog voltage enters treatment circuit and carries out calculation process.
Further, described control circuit comprises relay.
Further; described protection circuit comprises resettable fuse; when excess current; the relay controlling control circuit connects or disconnects; when circuit generation suddenly-applied short circuit or because of device breakdown or burn and produce huge short-circuit current time by resettable fuse, load circuit and power output circuit can be excised, after load restoration is normal, resettable fuse switches on power and load circuit automatically.
Further, described treatment circuit has the hardware interface communicated with host computer.
Further, described protection circuit is provided with alarm module, and automatic cut-off power can send alarm sound.
Advantage of the present utility model:
The utility model is gathered by physical quantity teaching instruction being examined to integrated apprentice's table power supply, facilitate user to oneself build practical training project circuit power consumption parameter measure, also the convenient short circuit to real training circuit simultaneously, overcurrent judges and protection, form a set of checking system that power supply is used, for device hardware is marked requisite ingredient, user in use can by the electric current of each power supply of upper computer software real-time monitored, the physical parameters such as voltage, when user is in use short-circuited, during the faults such as overcurrent, circuit is by automatic cut-off power and send alarm sound and carry out necessary prompting to user, there is fault in prompting user power supply, if employing daemon software, then daemon software is added up, evaluate and the chart way of output, important effect is played to the operating process evaluation of user and examination, allow user can get more information about the parameter of power supply like this.By recording and generate final output report carry out backstage to the number of times of fault alarm, time and type in section sometime with the combination of upper computer software.The utility model adopts resettable fuse to carry out second layer protection, thus avoids the drawback that legacy equipment frequently changes main fuse.
Accompanying drawing explanation
Fig. 1 is the utility model structured flowchart;
Fig. 2 is the utility model embodiment Acquisition Circuit principle sketch;
Fig. 3 is the utility model embodiment control circuit schematic diagram;
Fig. 4 is the utility model embodiment protection circuit schematic diagram;
Fig. 5 is the utility model embodiment treatment circuit schematic diagram.
Embodiment
Embodiment:
Below in conjunction with specific embodiment the technical solution of the utility model be described further and illustrate.
A kind of intelligent power gathers protective device, comprises switching power supply, Acquisition Circuit, control circuit, protection circuit and treatment circuit, switching power supply input ac voltage, the DC voltage of stable output; Acquisition Circuit gathers the current-voltage information of switching power supply, forms analog voltage; Control circuit comprises relay, for controlling the break-make of power supply; Protection circuit comprises resettable fuse, when excess current, the relay controlling control circuit connects or disconnects, when circuit generation suddenly-applied short circuit or because of device breakdown or burn and produce huge short-circuit current time by resettable fuse, load circuit and power output circuit can be excised, after load restoration is normal, resettable fuse switches on power and load circuit automatically; Treatment circuit calculation process analog voltage, the state parameter of out-put supply, disconnects out-put supply realizing circuit when circuit generation over current fault by pilot relay and protects and produce actuation of an alarm; Treatment circuit has the hardware interface communicated with host computer.
For ± output of 5V power supply:
Switching Power Supply adopts the power source design that industry is the most stable, and power is powerful, stable output, and firm interference is strong, and input AC 220V voltage, the DC voltage of output ± 5V, power is 30W.
Current collection circuit adopts Texas Instrument state-of-the-art high side current acquisition scheme INA194 chip, and chip features is common mode voltage :-16 to+80V; Low error: time temperature too high (maximal value) just, precision is 3.0%; Bandwidth: up to 500kHz; Gain: 50V/V; Quiescent current: 900 milliamperes (maximal value).Current collection circuit is by series current sampling resistor Rs (upper end of sampling resistor) between power supply and load, sampling resistor two ends differential voltage Vin+ and Vin-enter INA194 chip internal carry out amplification process, finally export at chip output (OUT) analog voltage be directly proportional to circuital current Is, analog voltage enters, and " treatment circuit " carries out further calculation process.Because isolation parallel connection in INA194 position detects current sample amplifier chip, the interference that load circuit produces " treatment circuit " effectively can be resisted.Owing to adopting the Switching Power Supply scheme that industry is the most stable, this output voltage is constant ± 5V, does not need to gather.
In this example power requirement stable output ± 5V, control circuit only needs to control+5V and-5 V power cable, the common port com of power supply.Keep permanent on-state.Adopt duplex PCB relay as the output switch of power supply, brightness power supply can only connect or disconnect simultaneously, and relay coil supply voltage is 24V, and electric shock rated current 10A, meets design requirement.
Protection circuit is made up of the relay of control circuit and resettable fuse F; when excess current; the output current signal gathered by Acquisition Circuit carries out process through treatment circuit and judges; the relay controlling control circuit connects or disconnects; when circuit generation suddenly-applied short circuit or because of device breakdown or burn and produce huge short-circuit current time by resettable fuse, load circuit and power output circuit can be excised, thus reach protection object.Bringing onto load recovers normal rear resettable fuse and automatically switches on power and load circuit.
Treatment circuit adopts STMicw Electronics based on ARMCortex-M3 core chip STM32F103RBT6 as treatment circuit master controller; chip dominant frequency 72M; integrated 16 Channel 12-Bit resolution analog to digital converters (ADC); + the 5V that analog to digital converter ADC0, ADC1 channel reception is gathered by INA194 and-5V power circuit loop current; process at chip internal; state parameter with out-put supply after chip program setting value income multilevel iudge, disconnects out-put supply realizing circuit when circuit generation over current fault by pilot relay and protects and produce actuation of an alarm.
The present embodiment realizes the monitoring of power supply and can intelligentized judgement power fail type voluntarily, can be combined, the state parameter of more vivid displaying power supply with upper computer software; For practice teaching, allow user can grasp the variable condition curve such as electricity consumption situation and current/voltage of load in real time, facilitate user's understanding in depth experimental real-training project principle; For examination person, can according to intelligent power gather protective device export information judge by examination person's practical training project existence failure problems.It should be pointed out that by change chip portfolio can reach the identical effect of the present embodiment, the control chip of the present embodiment is combined as: high stable Switching Power Supply+STM32+INA194+ relay+resettable fuse.Replacement scheme system can use other manufacturer's controllers to develop the system of the same function, then protection domain intention of the present utility model is full of these replacement schemes.
Claims (6)
1. intelligent power gathers a protective device, it is characterized in that: comprise switching power supply, Acquisition Circuit, control circuit, protection circuit and treatment circuit, switching power supply input ac voltage, the DC voltage of stable output; Acquisition Circuit gathers the current-voltage information of switching power supply; Control circuit is for controlling the break-make of power supply; The data for the treatment of circuit calculation process Acquisition Circuit, the state parameter of out-put supply, will control control circuit when circuit generation over current fault and protection circuit performs protection act.
2. intelligent power according to claim 1 gathers protective device; it is characterized in that: the current sampling resistor that described Acquisition Circuit comprises chip and connects between switching power supply with load; the differential voltage at sampling resistor two ends carries out amplification process through chip internal; export the analog voltage be directly proportional to circuital current at chip output, analog voltage enters treatment circuit and carries out calculation process.
3. intelligent power according to claim 1 and 2 gathers protective device, it is characterized in that: described control circuit comprises relay.
4. intelligent power according to claim 3 gathers protective device; it is characterized in that: described protection circuit comprises resettable fuse; when excess current; the relay controlling control circuit connects or disconnects; when circuit generation suddenly-applied short circuit or because of device breakdown or burn and produce huge short-circuit current time by resettable fuse, load circuit and power output circuit can be excised, after load restoration is normal, resettable fuse switches on power and load circuit automatically.
5. intelligent power according to claim 3 gathers protective device, it is characterized in that: described treatment circuit has the hardware interface communicated with host computer.
6. intelligent power according to claim 3 gathers protective device, and it is characterized in that: described protection circuit is provided with alarm module, automatic cut-off power can send alarm sound.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520775029.7U CN205003934U (en) | 2015-10-09 | 2015-10-09 | Protection device is gathered to intelligence electric quantity |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520775029.7U CN205003934U (en) | 2015-10-09 | 2015-10-09 | Protection device is gathered to intelligence electric quantity |
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| CN205003934U true CN205003934U (en) | 2016-01-27 |
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| CN201520775029.7U Active CN205003934U (en) | 2015-10-09 | 2015-10-09 | Protection device is gathered to intelligence electric quantity |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107255971A (en) * | 2017-07-03 | 2017-10-17 | 惠州市天泽盈丰物联网科技股份有限公司 | Garment hanging system, controller and power supply protection circuit |
| CN110568365A (en) * | 2019-08-08 | 2019-12-13 | 深圳职业技术学院 | lithium battery monitoring system |
-
2015
- 2015-10-09 CN CN201520775029.7U patent/CN205003934U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107255971A (en) * | 2017-07-03 | 2017-10-17 | 惠州市天泽盈丰物联网科技股份有限公司 | Garment hanging system, controller and power supply protection circuit |
| CN110568365A (en) * | 2019-08-08 | 2019-12-13 | 深圳职业技术学院 | lithium battery monitoring system |
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