CN204270077U - Experiments of Electricity multifunctional intellectual power supply - Google Patents
Experiments of Electricity multifunctional intellectual power supply Download PDFInfo
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- CN204270077U CN204270077U CN201420780308.8U CN201420780308U CN204270077U CN 204270077 U CN204270077 U CN 204270077U CN 201420780308 U CN201420780308 U CN 201420780308U CN 204270077 U CN204270077 U CN 204270077U
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Abstract
The utility model discloses a kind of Experiments of Electricity multifunctional intellectual power supply, namely the power pack input end of this intelligent power connects external power source, output terminal is linkage interface control module respectively, signal generation control module and power amplifier unit are with the working power providing each unit different, interface control unit sets different mode of operations and the input end of output terminal connection signal generation control module, the output terminal of signal generation control module connects the input end of power amplifier unit, the output terminal of power amplifier unit exports the required power supply of experiment, feedback unit gathers the output signal of power amplifier unit and feeds back to signal generation control module, sensor control unit pick-up transducers signal and be uploaded to interface control unit.This intelligent power has constant voltage, the stabilized power source of constant current exports, and power supply output waveform is adjustable as required, and can be used for the demarcation of sensor, meets the needs of school instruction experiment, ensure that carrying out smoothly of all kinds of Experiments of Electricity.
Description
Technical field
The utility model relates to a kind of Experiments of Electricity multifunctional intellectual power supply.
Background technology
Experimental power supply is equipment indispensable in school's Experiments of Electricity, it can provide required power supply to export for Experiments of Electricity, but existing experimental power supply can only realize basic Experiments of Electricity demand, and cannot meet, to power supply, there are necessarily required Experiments of Electricity, first constant voltage that requirement of experiment can not be provided, the stable output of constant current, especially without constant current output, namely can not produce invariable electric current to export, in a lot of Experiments of Electricity, experimental power supply must have fixing current output characteristics, the relation of analytical voltage and resistance when electric current is constant just can be ensured in experiment, the output waveform of second source is non-adjustable, and as in faraday electromagnetic induction experimentation, need power supply to export zigzag waveform, traditional experimental power supply cannot realize this function, 3rd traditional experiment power supply does not have the calibrating function of sensor, cannot calibrate the sensor that some service times are long.Therefore traditional experimental power supply cannot meet the needs of school instruction, and it exists more defect, have impact on carrying out smoothly of Experiments of Electricity.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of Experiments of Electricity multifunctional intellectual power supply, this power supply overcomes the defect of traditional experiment power supply, there is the stabilized power source output of constant voltage, constant current, power supply output waveform is adjustable as required, and can be used for the demarcation of sensor, meet the needs of school instruction experiment, ensure that carrying out smoothly of all kinds of Experiments of Electricity.
For solving the problems of the technologies described above, the utility model Experiments of Electricity multifunctional intellectual power supply comprises power pack, interface control unit, signal generation control module, sensor control unit, power amplifier unit and feedback control unit, described power pack input end connects external power source, output terminal connects described interface control unit respectively, signal generation control module and power amplifier unit are with the working power providing each unit different, described interface control unit sets different mode of operations and output terminal connects the input end of described signal generation control module, the output terminal of described signal generation control module connects the input end of described power amplifier unit, the output terminal of described power amplifier unit exports the required power supply of experiment, described feedback unit gathers the output signal of described power amplifier unit and feeds back to described signal generation control module, described sensor control unit pick-up transducers signal and be uploaded to described interface control unit.
Further, described power pack comprises high power switching power supply module and voltage transformation module, the input end that input end connects external power source, output terminal connects described voltage transformation module of described high power switching power supply module, described voltage transformation module exports the working power that different voltage provides each unit.
Further, described interface control unit comprises the first arm processor, bluetooth module, usb interface module, sensor interface module, rotary encoder interface module, SD card interface module, display interface module and communication module, described bluetooth module, usb interface module, sensor interface module, rotary encoder interface module, SD card interface module, display interface module and communication module are connected described first arm processor respectively, described bluetooth module is used for the wireless telecommunications of the first arm processor and external unit, described usb interface module is for connecting USB device, described sensor interface module is for connecting described sensor control unit, described rotary encoder interface module is for connecting rotary encoder, described SD card interface module is for connecting outside SD card, described display interface module is for connecting external display, described communication module is for connecting described signal generation control module.
Further, described sensor control unit comprises USB host control chip, and described USB host control chip is for gathering external sensor signal and being uploaded to described interface control unit.
Further, described signal generation control module comprises the second arm processor, high-precision voltage reference module and signal condition amplification module, described high-precision voltage reference module and signal condition amplification module are connected described second arm processor respectively, described high-precision voltage reference module provides the reference signal of described second arm processor output voltage, and described signal condition amplification module carries out transferring to described power amplifier unit after conditioning is amplified to described second arm processor output voltage.
Further; described power amplifier unit comprises high-power amplification integration module, overcurrent protection module and output current sampling module; described overcurrent protection module and output current sampling module are connected described high-power amplification integration module output terminal respectively; described overcurrent protection module provides the overcurrent protection of described high-power amplification integration module output current, and described output current sampling module gathers the output signal of described power amplifier unit for described feedback control unit.
Further, described feedback control unit comprises signal acquisition module, output overcurrent conservation treatment module and overcurrent protection relay control module, described signal acquisition module gathers the output voltage of described power amplifier unit, electric current and collection signal is transferred to described output overcurrent conservation treatment module, the output voltage of power amplifier unit described in described output overcurrent conservation treatment module monitors, electric current, as exceed setting value send signal give as described in overcurrent protection relay control module and signal generation control module, described signal generation control module look-at-me exports, described overcurrent protection relay control module is cut off external loading and is reported to the police.
Because the utility model Experiments of Electricity multifunctional intellectual power supply have employed technique scheme, namely the power pack input end of this intelligent power connects external power source, output terminal is linkage interface control module respectively, signal generation control module and power amplifier unit are with the working power providing each unit different, interface control unit sets different mode of operations and the input end of output terminal connection signal generation control module, the output terminal of signal generation control module connects the input end of power amplifier unit, the output terminal of power amplifier unit exports the required power supply of experiment, feedback unit gathers the output signal of power amplifier unit and feeds back to signal generation control module, sensor control unit pick-up transducers signal and be uploaded to interface control unit.This power supply overcomes the defect of traditional experiment power supply, have the stabilized power source output of constant voltage, constant current, power supply output waveform is adjustable as required, and can be used for the demarcation of sensor, meet the needs of school instruction experiment, ensure that carrying out smoothly of all kinds of Experiments of Electricity.
Accompanying drawing explanation
Below in conjunction with drawings and embodiments, the utility model is described in further detail:
Fig. 1 is the theory diagram of the utility model Experiments of Electricity multifunctional intellectual power supply;
Fig. 2 is the circuit realiration figure of voltage transformation module in this intelligent power power pack;
Fig. 3 is the pin schematic diagram of this intelligent power interface control unit first arm processor;
Fig. 4 is the crystal oscillating circuit figure of this intelligent power interface control unit first arm processor;
Fig. 5 is bluetooth module interface circuit figure in this intelligent power interface control unit;
Fig. 6 is usb interface module circuit diagram in this intelligent power interface control unit;
Fig. 7 is sensor interface module circuit diagram in this intelligent power interface control unit;
Fig. 8 is communication module interface circuit figure in this intelligent power interface control unit;
Fig. 9 is rotary encoder interface module circuit figure in this intelligent power interface control unit;
Figure 10 is display interface module circuit diagram in this intelligent power interface control unit;
Figure 11 is SD card interface module circuit diagram in this intelligent power interface control unit;
Figure 12 is this intelligent power sensor control unit circuit realiration figure;
Figure 13 is the pin schematic diagram of this intelligent power signal generation control module second arm processor;
Figure 14 is the crystal oscillating circuit figure of this intelligent power signal generation control module second arm processor;
Figure 15 is the circuit realiration figure of this intelligent power signal generation control module high-precision voltage reference module;
Figure 16 is the circuit realiration figure of this intelligent power signal generation control module signal condition amplification module;
Figure 17 is the circuit realiration figure of the high-power amplification integration module of this intelligent power power amplifier unit;
Figure 18 is the circuit realiration figure of this intelligent power power amplifier unit overcurrent protection module;
Figure 19 is the circuit realiration figure of this intelligent power power amplifier unit output current sampling module;
Figure 20 is the circuit realiration figure of this intelligent power feedback control unit signal acquisition module;
Figure 21 is the circuit realiration figure of this intelligent power feedback control unit output overcurrent conservation treatment module;
Figure 22 is the circuit realiration figure of this intelligent power feedback control unit overcurrent protection relay control module.
Embodiment
Embodiment as shown in Figure 1, the utility model Experiments of Electricity multifunctional intellectual power supply comprises power pack 1, interface control unit 2, signal generation control module 3, sensor control unit 4, power amplifier unit 5 and feedback control unit 6, described power pack 1 input end connects external power source, output terminal connects described interface control unit 2 respectively, signal generation control module 3 and power amplifier unit 5 are with the working power providing each unit different, described interface control unit 2 sets different mode of operations and output terminal connects the input end of described signal generation control module 3, the output terminal of described signal generation control module 3 connects the input end of described power amplifier unit 5, the output terminal of described power amplifier unit 5 exports the required power supply of experiment, described feedback unit 6 gathers the output signal of described power amplifier unit 5 and feeds back to described signal generation control module 3, described sensor control unit 4 pick-up transducers signal and be uploaded to described interface control unit 2.
Preferably, described power pack comprises high power switching power supply module and voltage transformation module, the input end that input end connects external power source, output terminal connects described voltage transformation module of described high power switching power supply module, described voltage transformation module exports the working power that different voltage provides each unit.
Fig. 2 is the circuit realiration figure of voltage transformation module, is exported by LM2596 chip realization ± 24V and 5V voltage, realizes 3.3V voltage export by HT7833 chip, realizes-5V voltage export by TPS60400 chip.
Preferably, described interface control unit comprises the first arm processor, bluetooth module, usb interface module, sensor interface module, rotary encoder interface module, SD card interface module, display interface module and communication module, described bluetooth module, usb interface module, sensor interface module, rotary encoder interface module, SD card interface module, display interface module and communication module are connected described first arm processor respectively, described bluetooth module is used for the wireless telecommunications of the first arm processor and external unit, described usb interface module is for connecting USB device, described sensor interface module is for connecting described sensor control unit, described rotary encoder interface module is for connecting rotary encoder, described SD card interface module is for connecting outside SD card, described display interface module is for connecting external display, described communication module is for connecting described signal generation control module.
Fig. 3 is the pin schematic diagram of the first arm processor, and its model is STM32F103VCT6, the microprocessor of this to be a slice based on ARM order set, rich hardware resource, maximum operation frequency can arrive 72MHZ; Fig. 4 is the crystal oscillating circuit figure of the first arm processor; Fig. 5 is the bluetooth module interface circuit figure be connected with the first arm processor; Fig. 6 is the usb interface module circuit diagram be connected with the first arm processor; Fig. 7 is the sensor interface module circuit diagram be connected with the first arm processor; Fig. 8 is the communication module interface circuit figure be connected with the first arm processor; Fig. 9 is the rotary encoder interface module circuit figure be connected with the first arm processor; Figure 10 is the display interface module circuit diagram be connected with the first arm processor; Figure 11 is the SD card interface module circuit diagram be connected with the first arm processor.
Preferably, as shown in figure 12, described sensor control unit comprises USB host control chip, and it adopts CH374T chip, and described USB host control chip is for gathering external sensor signal and being uploaded to described interface control unit.
Preferably, described signal generation control module comprises the second arm processor, high-precision voltage reference module and signal condition amplification module, described high-precision voltage reference module and signal condition amplification module are connected described second arm processor respectively, described high-precision voltage reference module provides the reference signal of described second arm processor output voltage, and described signal condition amplification module carries out transferring to described power amplifier unit after conditioning is amplified to described second arm processor output voltage.
Figure 13 is the pin schematic diagram of the second arm processor, and its model is identical with the first arm processor, and Figure 14 is the crystal oscillating circuit figure of the second arm processor; Figure 15 is the circuit diagram of the high-precision voltage reference module be connected with the second arm processor; Figure 16 is the circuit realiration figure of the signal condition amplification module be connected with the second arm processor; Second arm processor produces various signal by inner high speed DAC-circuit and after signal condition amplification module, send power cell and final output; High-precision voltage reference module provides voltage reference for DAC and ADC.
Preferably; described power amplifier unit comprises high-power amplification integration module, overcurrent protection module and output current sampling module; described overcurrent protection module and output current sampling module are connected described high-power amplification integration module output terminal respectively; described overcurrent protection module provides the overcurrent protection of described high-power amplification integration module output current, and described output current sampling module gathers the output signal of described power amplifier unit for described feedback control unit.
Figure 17 is the circuit diagram of high-power amplification integration module, and it adopts model to be the power amplifier chips of OPA541, and this is the high-power amplification circuit of a high precision high bandwidth, and maximum output current can reach 10A.Be used for amplifying signal generation control module export conditioning after DAC signal; Figure 18 is overcurrent protection module circuit diagram, and wherein resistance R45 is overcurrent protection resettable fuse; Figure 19 is the circuit diagram of output current sampling module, and wherein resistance R38 is output current sampling resistor.
Preferably, described feedback control unit comprises signal acquisition module, output overcurrent conservation treatment module and overcurrent protection relay control module, described signal acquisition module gathers the output voltage of described power amplifier unit, electric current and collection signal is transferred to described output overcurrent conservation treatment module, the output voltage of power amplifier unit described in described output overcurrent conservation treatment module monitors, electric current, as exceed setting value send signal give as described in overcurrent protection relay control module and signal generation control module, described signal generation control module look-at-me exports, described overcurrent protection relay control module is cut off external loading and is reported to the police.
Figure 20 is the circuit diagram of signal acquisition module, is measured the voltage and current of power amplifier unit output, feed back to signal generation control module by the sampling resistor of power amplifier unit; Figure 21 is the circuit diagram of output overcurrent conservation treatment module, the voltage and current that its Real-Time Monitoring power amplifier unit exports, namely sends overcurrent protection relay actuating signal and sends look-at-me process to the second arm processor of signal generation control module as exceeded settings; Figure 22 is the circuit diagram of overcurrent protection relay control module, and when there being over-current signal to produce, relay U13 action disconnecting external exports and produces alarm sound.
In this intelligent power, 220v civil power is changed into each unit by power pack needs voltage to provide working power, select arrange the signal type that will export and setup parameter sent a command to signal generation control module by interface control unit, signal generation control module exports corresponding waveform signal by high-accuracy arithmetic and carries out power amplification output to power amplifier unit, the parameters that feedback control unit Real-Time Monitoring power amplifier unit outputs signal also feeds back to signal generation control module, so that signal generation control module adjusts signal in real time and exports, guarantee that the final signal exported is accurate, when connecting sensor, sensor control unit pick-up transducers data also upload data to interface control unit and show, and arrange, store and the operations such as demarcation.
This intelligent power is mainly used in Faraday's electromagnetic induction law experiment in education experiment, exports various waveform by arranging, and provides required voltage waveform by the frequency and amplitude size adjusting waveform for testing; Various kinds of sensors can be demarcated in addition, as pH sensor, after demarcation, pH sensor is more accurate when image data, the raw data that this sensor reads is generally magnitude of voltage, such as, pH sensor raw data when measuring the solution of pH=4 is 386mv, the raw data so writing down pH=4 at this intelligent power subscript is 386mv, so just pH=4 is demarcated, same mode demarcates the raw voltage data of pH=9, this completes the demarcation of pH sensor, determine a straight line at 2, namely pH sensor can measure experimental data accurately.
This intelligent power is multifunctional digital programmable power supply, employing high integration, high-speed digitization integrated circuit achieve high-power programmable signal and export, except the constant voltage output function that traditional experiment power supply is provided, also possess other polytype signals to export, sine wave output, triangular wave, square wave, trapezoidal wave can be edited, even other random waveforms, are specially adapted in some Experiments of Electricity, need these distinctive signals to drive the occasion of experimental facilities, Teaching aid for electricity.This intelligent power have employed graphic user interface, outputs signal visible, simple and direct-viewing operation.Support digitizing laboratory sensor special purpose interface, the collection of experimental data, display, storage can be realized, can be widely used in digitizing Experiments of Electricity.
The basic parameter of this intelligent power is:
1, output voltage range ± 20V, electric current ± 2A;
2, voltage, electric current export accuracy 0.1%FS;
3,3 cun of TFT LCDs, graphic user interface;
4, built-in 2G RAM (random access memory) card, can store parameters and preserve sensor image data;
5, exportable direct current, sine wave, triangular wave, square wave, other programmable signals such as trapezoidal, the highest 2MHz of output frequency, degree of distortion is less than 1%;
6, built-in short circuit, overcurrent multiple protective;
7, the transducer calibration of all kinds of digital experiment is supported.
The feature of this intelligent power is:
1, Digital Programmable controls, and high precision exports, and this intelligent power realizes the accurate output of variable voltage based on high speed D/A+power amplifier+high-speed AD feedback, and resolution can reach full scale 5/10000ths;
2, there is negative voltage, constant current output function, in negative voltage and the Experiments of Electricity of constant current output function particularly suitable, need the occasion of negative voltage and constant current output;
3, high-power programmable signal exports, and high-power programmable signal can drive external unit as signal source, as output AC signal drive motor etc.;
4, can connect intelligent terminal, by the output signal of special software setting intelligent power, intelligent power coordinates special software can realize carrying out Programmable logical controller to external unit;
5, graphic interface intuitively, is simple and easy to use, and adopt 3 cun of color LCD screens displays, signal parameter, the waveform of output can show intuitively, and output signal parameter is convenient to be regulated, and is simple and easy to use;
6, e-laboratory transducer calibration is supported, intelligent power can be accessed by e-laboratory various kinds of sensors, can show and store sensor data, serve as the effect of sensor collector.
Claims (7)
1. an Experiments of Electricity multifunctional intellectual power supply, it is characterized in that: this intelligent power comprises power pack, interface control unit, signal generation control module, sensor control unit, power amplifier unit and feedback control unit, described power pack input end connects external power source, output terminal connects described interface control unit respectively, signal generation control module and power amplifier unit are with the working power providing each unit different, described interface control unit sets different mode of operations and output terminal connects the input end of described signal generation control module, the output terminal of described signal generation control module connects the input end of described power amplifier unit, the output terminal of described power amplifier unit exports the required power supply of experiment, described feedback unit gathers the output signal of described power amplifier unit and feeds back to described signal generation control module, described sensor control unit pick-up transducers signal and be uploaded to described interface control unit.
2. Experiments of Electricity multifunctional intellectual power supply according to claim 1, it is characterized in that: described power pack comprises high power switching power supply module and voltage transformation module, the input end that input end connects external power source, output terminal connects described voltage transformation module of described high power switching power supply module, described voltage transformation module exports the working power that different voltage provides each unit.
3. Experiments of Electricity multifunctional intellectual power supply according to claim 1, is characterized in that: described interface control unit comprises the first arm processor, bluetooth module, usb interface module, sensor interface module, rotary encoder interface module, SD card interface module, display interface module and communication module, described bluetooth module, usb interface module, sensor interface module, rotary encoder interface module, SD card interface module, display interface module and communication module are connected described first arm processor respectively, described bluetooth module is used for the wireless telecommunications of the first arm processor and external unit, described usb interface module is for connecting USB device, described sensor interface module is for connecting described sensor control unit, described rotary encoder interface module is for connecting rotary encoder, described SD card interface module is for connecting outside SD card, described display interface module is for connecting external display, and described communication module is for connecting described signal generation control module.
4. Experiments of Electricity multifunctional intellectual power supply according to claim 1, it is characterized in that: described sensor control unit comprises USB host control chip, described USB host control chip is for gathering external sensor signal and being uploaded to described interface control unit.
5. Experiments of Electricity multifunctional intellectual power supply according to claim 1, it is characterized in that: described signal generation control module comprises the second arm processor, high-precision voltage reference module and signal condition amplification module, described high-precision voltage reference module and signal condition amplification module are connected described second arm processor respectively, described high-precision voltage reference module provides the reference signal of described second arm processor output voltage, and described signal condition amplification module carries out transferring to described power amplifier unit after conditioning is amplified to described second arm processor output voltage.
6. Experiments of Electricity multifunctional intellectual power supply according to claim 1; it is characterized in that: described power amplifier unit comprises high-power amplification integration module, overcurrent protection module and output current sampling module; described overcurrent protection module and output current sampling module are connected described high-power amplification integration module output terminal respectively; described overcurrent protection module provides the overcurrent protection of described high-power amplification integration module output current, and described output current sampling module gathers the output signal of described power amplifier unit for described feedback control unit.
7. Experiments of Electricity multifunctional intellectual power supply according to claim 1, it is characterized in that: described feedback control unit comprises signal acquisition module, output overcurrent conservation treatment module and overcurrent protection relay control module, described signal acquisition module gathers the output voltage of described power amplifier unit, electric current and collection signal is transferred to described output overcurrent conservation treatment module, the output voltage of power amplifier unit described in described output overcurrent conservation treatment module monitors, electric current, as exceed setting value send signal give as described in overcurrent protection relay control module and signal generation control module, described signal generation control module look-at-me exports, described overcurrent protection relay control module is cut off external loading and is reported to the police.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420780308.8U CN204270077U (en) | 2014-12-12 | 2014-12-12 | Experiments of Electricity multifunctional intellectual power supply |
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| CN201420780308.8U CN204270077U (en) | 2014-12-12 | 2014-12-12 | Experiments of Electricity multifunctional intellectual power supply |
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| CN204270077U true CN204270077U (en) | 2015-04-15 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105739366A (en) * | 2014-12-12 | 2016-07-06 | 上海数好数字信息科技有限公司 | Multifunctional intelligent power supply for electricity experiment |
-
2014
- 2014-12-12 CN CN201420780308.8U patent/CN204270077U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105739366A (en) * | 2014-12-12 | 2016-07-06 | 上海数好数字信息科技有限公司 | Multifunctional intelligent power supply for electricity experiment |
| CN105739366B (en) * | 2014-12-12 | 2023-08-08 | 上海数好数字信息科技有限公司 | Multifunctional intelligent power supply for electricity experiments |
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