CN204303234U - Education experiment power-supply system - Google Patents
Education experiment power-supply system Download PDFInfo
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- CN204303234U CN204303234U CN201420847941.4U CN201420847941U CN204303234U CN 204303234 U CN204303234 U CN 204303234U CN 201420847941 U CN201420847941 U CN 201420847941U CN 204303234 U CN204303234 U CN 204303234U
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Abstract
The education experiment power-supply system that the utility model provides, comprises non-contact radio-frequency and to swipe the card power-on management system, singly-bound bimodulus on-off control system, teacher's power-supply system and student power source system; Described singly-bound bimodulus on-off control system controls teacher's power-supply system and student power source system respectively; Teacher's power-supply system comprises teacher's transformer coding winding, and student power source system comprises student's transformer coding winding, and teacher's power-supply system and student power source system are respectively by low pressure AC/DC coding and regulating AC/DC mu balanced circuit; Teacher's coding and regulating unit controls of singly-bound bimodulus on-off control system regulates the low pressure AC/DC coding of teacher's power-supply system, student's coding and regulating unit controls of singly-bound bimodulus on-off control system to regulate the low pressure AC/DC coding of student power source system.The utility model adopts the soft-touch type singly-bound shown unique characteristics to trigger the supercircuit of bimodulus on-off circuit and intrinsic BINARY coding, simple to operate, easy to use, durable in use.
Description
Technical field
The utility model relates to education experiment power-supply system.
Background technology
Along with the continuous progress of science and technology, increasing electronic product comes into our daily life, and all trades and professions all making full use of this rare opportunity to develop, are innovated.The science-and-technology enterprise of education sector is no exception, traditional physics laboratory's power supply, adopt band switch to regulate teacher or student experimenting voltage, especially student's controlled source controls to adopt traditional mechanical type self-lock switch or small air switch, and there is problem mechanical life.Conventional teaching laboratory equipment does not have encryption function, and anyone can at will start shooting to laboratory, operates arbitrarily, even damages machine, and most teacher finish experiment after also easily leak and forget shutdown, more easily produce potential safety hazard.Traditional laboratory operation controls, and all adopt double bond operation, a key is opened, and another key closes, even if there is singly-bound to be also all singly-bound mechanical type self-locking spring switch, also there is short problem mechanical life, at all cannot compared with soft-touch type singly-bound bimodulus switch.
Utility model content
The technical problems to be solved in the utility model is that prior art adopts band switch to regulate teacher or student experimenting voltage, and mechanical life is short, and controllability is not strong; In order to solve the problem, the utility model provides a kind of novel laboratory teaching power control system, comprise non-contact radio-frequency to swipe the card power-on management system, singly-bound bimodulus on-off control system, teacher's power-supply system and student power source system, electric current enters non-contact radio-frequency respectively through electric leakage master switch and to swipe the card power-on management system and equipment master control power input, and general supply input is connected with student power source system with singly-bound bimodulus on-off control system, teacher's power-supply system respectively; Described singly-bound bimodulus on-off control system controls teacher's power-supply system and student power source system respectively; Teacher's power-supply system comprises teacher's transformer coding winding, and student power source system comprises student's transformer coding winding, and teacher's power-supply system and student power source system are respectively by low pressure AC/DC coding and regulating AC/DC mu balanced circuit; Teacher's coding and regulating unit controls of singly-bound bimodulus on-off control system regulates the low pressure AC/DC coding of teacher's power-supply system, student's coding and regulating unit controls of singly-bound bimodulus on-off control system to regulate the low pressure AC/DC coding of student power source system.
Preferably, described singly-bound bimodulus on-off control system comprises singly-bound bimodulus switch and power supply output control circuit, the output voltage of described singly-bound bimodulus switch control rule power supply output control circuit; Described singly-bound bimodulus switch comprises six non-gate inverters, capacitor, resistance and touch switch; Described power output circuit comprises coding transformer, and described coding transformer is made up of with the phase sequence of 8421 yards combination Transformer Winding.
Preferably, described non-contact radio-frequency power-on management system of swiping the card comprises reader identification circuit, Non-contact radio frequency card reader and delay circuit, output current is divided into two-way after electric leakage master switch, one road is to the equipment master control power input of reader identification circuit, another road enters Non-contact radio frequency card reader, and equipment master control power input is connected with delay circuit.
Preferably, described teacher's power-supply system comprises master control power supply and teacher's socket control unit, and includes over-current protecting unit, overload protection unit, short-circuit protection unit, two-way residual current protective unit;
Described student power source system comprises controlled source and socket control unit, and controlled source control unit and student's socket control unit are independently arranged, and include overload protection unit, acousto-optic warning unit, short circuit lock cell and resetting means.
Preferably, described master control power supply single channel or multichannel control arbitrarily or lock the socket control unit of student power source system.
The beneficial effect of the utility model preferred embodiment is: 1, the transformation of traditional Industrial Frequency Transformer exports and all adopts many taps form, and the hand lifting/lowering carrying out voltage output with traditional band switch or driving switch regulates, and tap is many, contact is many, fault rate is high; The utility model is by digital coding, be successfully applied in power transformer, traditional Transformer Winding with digital coding form arranged in sequence, recycling coding principle carries out phase sequence combination, the winding of transformer is made to follow the plus-minus combination of coding circuit and carry out lifting output, the subversive pressure regulation pattern changing traditional transformer is simple to operate, easy to use, durable in use; 2, the utility model is teacher, physics student school duty room provides low pressure AC and DC power supply and required mains supply, can student experimenting power supply be carried out independence or grouping control, locking, be regulated, and there is electric leakage, overload, short circuit multiple protective and sound and light alarm and reset function; 3, the utility model can realize computer management, is convenient to effectively control output voltage, and output current is large, and load capacity is strong, is realize the new way that high-power pressure regulation enters digital management pattern.
Accompanying drawing explanation
Fig. 1 is model calling block diagram of the present utility model;
Fig. 2 is singly-bound bimodulus on-off control system circuit diagram of the present utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing, the technical solution of the utility model is further described.
As shown in Figure 1, laboratory teaching power control system of the present utility model, comprise non-contact radio-frequency to swipe the card power-on management system, singly-bound bimodulus on-off control system, teacher's power-supply system and student power source system, electric current enters non-contact radio-frequency respectively through electric leakage master switch and to swipe the card power-on management system and equipment master control power input, general supply input is connected with student power source system with singly-bound bimodulus on-off control system, teacher's power-supply system respectively by Secure isolation circuit, and Secure isolation circuit is that operating system is powered; Singly-bound bimodulus on-off control system controls teacher's power-supply system and student power source system respectively; Teacher's power-supply system comprises teacher's transformer coding winding, student power source system comprises student's transformer coding winding, teacher's power-supply system and student power source system are respectively by low pressure AC/DC coding and regulating AC/DC mu balanced circuit, AC/DC mu balanced circuit also protects warning circuit to be connected with AC/DC protection circuit, AC/DC, the required safe voltage of final output; Teacher's coding and regulating unit controls of singly-bound bimodulus on-off control system regulates the low pressure AC/DC coding of teacher's power-supply system, student's coding and regulating unit controls of singly-bound bimodulus on-off control system to regulate the low pressure AC/DC coding of student power source system.
Non-contact radio-frequency power-on management system of swiping the card comprises reader identification circuit, Non-contact radio frequency card reader and delay circuit, output current is divided into two-way after electric leakage master switch, one road is to the equipment master control power input of reader identification circuit, another road enters Non-contact radio frequency card reader, and equipment master control power input is connected with delay circuit.
Teacher's power-supply system comprises master control power supply and teacher's socket control unit, and includes over-current protecting unit, overload protection unit, short-circuit unit, two-way residual current protective unit; Student power source system comprises controlled source and socket control unit, and controlled source control unit and student's socket control unit are independently arranged, and include overload protection unit, acousto-optic warning unit, short circuit lock cell and resetting means.Master control power supply single channel or multichannel control arbitrarily or lock the socket control unit of student power source system.
As shown in Figure 1, carry out testing for four groups of students, master station adopts the drawer type all-metal construction of band lockset, for non-contact type is swiped the card power-on management system, there is the characteristic (delay time sets according to actual needs, and it is example that this detailed description of the invention adopts 45 minutes) of the rear automatic time delay 45 minutes automatic shutdowns of start; Power supply input AC220V ± 10%, frequency 50Hz; Master control power supply is equipped with overcurrent, short circuit, two-way earth leakage protective device, shields to Electrical Safety; General control panel is stainless steel polishing panel, and character, mark adopt artistic carving, never drop-off, fades, be out of shape, and operation controls employing soft-touch type chromium plating button, easy to operate, reliable and stable; What lead-out terminal adopted diameter 4mm to prevent raising one's hat inserts, connect dual-purpose copper core binding post (can insert and can connect).
(1) teacher's power supply exports:
A, there is civil power AC220V/10A socket, for teacher or other electrical equipments provide mains supply;
B, ac output voltage: 0V ~ 30V, addition regulates, resolution ratio 2V, rated current 8A, overload protection;
C, DC voltage-stabilizing: 0V ~ 30V, continuously adjustabe, coarse adjustment 2V, fine tuning 0.1V, rated current 6A, overload protection;
D, big current output valve 40A(+8A/-2A in short-term), when output current is greater than 10A, is energized and automatically shuts down for 20 seconds ± 2 seconds, and have corresponding break-make to indicate.
(2) output characteristics is exchanged:
A, floating voltage are not more than 1.05U mark+0.3V;
B, full-load voltage are not less than 0.95U mark-0.3V.
(3) DC voltage-stabilizing output characteristics:
A, input voltage change between 198V ~ 242V, are not more than 1%U mark+0.1V at full load each shelves output voltage variable quantity;
B, load stability: input voltage keeps 220V constant, and load current changes in 0 to full-load range, and each shelves output voltage variable quantity is not more than 1%U mark+0.1V;
C, ripple voltage: power supply keeps 220V, full load ripple voltage is not more than 0.1%U and marks (virtual value)+5mV.
(4) overload protection:
A, except D.C. high-current exports in short-term, serve as a teacher power supply AC and DC export in 1.05 ~ 1.1 times of load current value, can normally work.When load is greater than rated current 1.1 ~ 1.5 times, energy overload protection;
Can automatically shut down or protect when b, output circuit short circuit;
By output no-load after c, overload protection, by reset key or reopen power supply, power supply can recover to export.Teacher's over current protection does not affect other and controls.
(5) teacher's power supply exports the voltage, the ammeter instruction that have precision to be not less than 2.5 grades.
(6) grouping controls: controlled source controls to control independent setting with student's socket, is independent of each other; It is 8 tunnels that circuit controls, that is: control student power source 4 road and control commercial power socket 4 tunnel;
A, master control single channel or multichannel can control arbitrarily or lock the break-make that A, B, C, D tetra-groups of student experimenting table commercial power socket power, and have overload protection, sound and light alarm, short circuit locking and resetting means, and single channel output current is not less than 6A;
B, master control single channel or multichannel can control arbitrarily or lock the break-make of A, B, C, D tetra-groups of student's controlled sources, and have overload protection, sound and light alarm, short circuit locking and resetting means, and single channel output current is not less than 6A;
The protection such as overcurrent, short circuit, overload that c, grouping control is that 8 tunnels are independent separately, protects respectively, does not interfere with each other.
(7) student's controlled voltage regulating and control:
A, student's controlled source control to adopt the multi-functional grouping of soft-touch type to control and locking mode by teacher's master control, and have overload protection, and student does not need to regulate;
B, student's voltage-regulation adopt command to control to adjust by teacher's master control, avoid because line drop causes student's controlled source voltage to reduce and affect experiment effect;
C, master control to the voltage regulation limits of student's controlled source are: exchange 0 ~ 30V, DC voltage-stabilizing: 0 ~ 30V, and addition regulates, variable value 2V; Student every distributes electric current: AC >=3A, DC >=2A, and the controlled total current >=84A of student, teacher's master control also can carry out AC and DC switching to student's controlled voltage.
Student's controlled source and teacher's master control power supply are independent adjustment, are independent of each other.
As shown in Figure 2, singly-bound bimodulus on-off control system comprises singly-bound bimodulus switch and power supply output control circuit, the output voltage of singly-bound bimodulus switch control rule power supply output control circuit; Singly-bound bimodulus switch comprises six non-gate inverters, capacitor, resistance and touch switch; Power output circuit comprises coding transformer, and described coding transformer is made up of with the phase sequence of 8421 yards combination Transformer Winding.For four groups of student experimentings, need adopt four groups of singly-bound bimodulus switches, four groups of singly-bound bimodulus switches are made up of six non-gate inverters (U1, U2, U3, U4, U5, U6, U11, U12, U13, U14, U15, U16), capacitor (C6, C7, C8, C9) and resistance (R15, R16, R17, R18, R19, R20, R21, R22, R23, R26, R27, R28) and soft-touch type microswitch (S7, S9, S10, S11); Coding Transformer Winding comprises L1, L2, L3, L4 and L5; Luminous indicating lamp D6, D7, D8 and D9 is also provided with in singly-bound bimodulus switch.
When complete machine is energized, 3. the input of U2 has capacitor C6 to connect R15 and ground connection, being in the charging initial stage is low level, therefore 3. the input of U2 is low level, the output of U3 is 4. anti-phase is high level, and 5. U3 is also in high level, simultaneously, the input of U1 1. through the output of resistance R16 and U2 4., 5. the input of U3 be connected and be all in high level, makes this circuit be in stable state.Because 4. U2 output is connected with the input 5 of U3, for high level, be then that the output of U3 is 6. anti-phase for low level, thus make the output control circuit U17NLN2004 of power supply not promote electric current, make corresponding coding winding L 5 not participate in voltage to export, so reduce the output voltage of transformer.
When needs export, by S7, voltage because of C6 two ends is low level and can not suddenlys change, and when pressing S7,1. the input of U1 is reduced rapidly, U1 output 2., U2 input 3. transfer high level to, U2 output 4., 5. the input of U3 be connected and transfer low level to, and luminous indicating lamp D6 lights, and makes the output of U3 6. become high level, make U17 driver output, coding Transformer Winding L5 is connected and participates in voltage output.Complete the coding and regulating of power transformer.
As needed to stop, then pressing S7, entering break-make pattern next time.
More than just describe wherein a group in coding circuit, other three groups of operation principles are identical, encode corresponding with the winding of transformer.
The operation principle of non-contact radio-frequency card-punching system of the present utility model: complete machine is input as AC220V50Hz, point two-way after electric leakage master switch, one road is to general supply input, controlled by Card Reader identification circuit, another road enters the Non-contact radio frequency card reader of Opportunity awaiting control for linear, by radio-frequency card reader emitting radio frequency signal, when there being the radio-frequency card of relative set near card reader, radio-frequency card receives induced signal and sends code instruction, start-up command is sent through card reader decoding identification, thus drive general supply relay to start to power to complete machine, delay circuit starts self-clocking simultaneously, when time delay reaches 45 minutes, delay circuit sends halt instruction to identification circuit, power supply terminates.For other cards not through allowing, card reader does not store its corresponding information, therefore is refused by card reader, can not start shooting, and sends the prompting of sound and light alarm refusal.This circuit is integration module, and the utility model by " contactless brushing card management system " application and laboratory power supply equipment, manages so that better and uses first.
Complete machine structure of the present utility model is all-metal construction, stainless steel faceplate, character, is designated laser engraving, for non-contact radio-frequency is swiped the card power-on management system, has start and falls meter 45 minutes (during a class) automatic shut-off functions.Can not because of one class experiment finish forget about shutdown and occur beyond.Operation adopts soft-touch type singly-bound electronics bimodulus switch control rule mode, namely by once opening again by once closing, the principle of this singly-bound bimodulus switch adopts digital integrated electronic circuit, not circuit characteristic is utilized to be combined to form unique singly-bound bimodulus switch through ingenious, carry out control operation, this technology is for be successfully applied to experimental power supply system first.The supply voltage of teacher and student controls to adopt digital coding, binary digital encoding technology is successfully applied to first in education experiment power supply, low pressure winding by Industrial Frequency Transformer carries out digital coding and sequence, then again sequence winding numbers pile up mode is recalled as required, make output voltage according to binary digital encoding numerical value output voltage, the subversive traditional approach changing band switch adjustment transformer voltage.
Conventional teaching laboratory equipment does not have encryption function, and anyone can at will start shooting to laboratory, operates arbitrarily, even damages machine, and most teacher finish experiment after also easily leak and forget shutdown, more easily produce potential safety hazard.First native system have employed non-contact radio-frequency and swipes the card after (encryption) management system, in public laboratory, do any experiment, all must hold radio frequency (encryption) card, after namely teacher takes radio-frequency card, just have the right to open complete machine by non-contact radio frequency cards, other people cannot arbitrarily start shooting.Holder swipe the card start after, complete machine by automatic time delay, fall meter 45 minutes (during a class) afterwards system automatically close, therefore can not because of experiment finish forget shutdown and produce potential safety hazard.
Traditional laboratory operation controls, and all adopt double bond operation, a key is opened, and another key closes.Even if there is singly-bound to be also all singly-bound mechanical type self-locking spring switch, also there is short problem mechanical life, at all cannot compared with soft-touch type singly-bound bimodulus switch.Soft-touch type singly-bound bimodulus switch utilizes the ingenious grafting not circuit of capacitor specific characteristics to realize State Transferring and maintenance, makes it to simulate an on off state, realize switch transition, and it is long to have the life-span, operates the advantages such as light.
First the voltage-regulation of the utility model complete machine adopts coding techniques, changes the pressure regulation pattern of traditional Industrial Frequency Transformer.The transformation of tradition Industrial Frequency Transformer exports and all adopts many taps form, and the hand lifting/lowering carrying out voltage output with traditional band switch or driving switch regulates, and tap is many, contact is many, fault rate is high.And this machine is by digital coding, be successfully applied in power transformer, traditional Transformer Winding with digital coding form arranged in sequence, recycling coding principle carries out phase sequence combination, the winding of transformer is made to follow the plus-minus combination of coding circuit and carry out lifting output, the subversive pressure regulation pattern changing traditional transformer.
The utility model great advantage to realize computer management, is convenient to effectively control output voltage, output current is large, load capacity is strong, is realize the new way that high-power pressure regulation enters digital management pattern.
Set forth a lot of detail in the above description so that fully understand the utility model.But above description is only preferred embodiment of the present utility model, the utility model can be much different from alternate manner described here to implement, and therefore the utility model is not by the disclosed concrete restriction implemented above.Any those skilled in the art are not departing under technical solutions of the utility model ambit simultaneously, the Method and Technology content of above-mentioned announcement all can be utilized to make many possible variations and modification to technical solutions of the utility model, or be revised as the Equivalent embodiments of equivalent variations.Every content not departing from technical solutions of the utility model, according to technical spirit of the present utility model to any simple modification made for any of the above embodiments, equivalent variations and modification, all still belongs in the scope of technical solutions of the utility model protection.
Claims (5)
1. education experiment power-supply system, it is characterized in that, comprise non-contact radio-frequency to swipe the card power-on management system, singly-bound bimodulus on-off control system, teacher's power-supply system and student power source system, electric current enters non-contact radio-frequency respectively through electric leakage master switch and to swipe the card power-on management system and equipment master control power input, and general supply input is connected with student power source system with singly-bound bimodulus on-off control system, teacher's power-supply system respectively; Described singly-bound bimodulus on-off control system controls teacher's power-supply system and student power source system respectively; Teacher's power-supply system comprises teacher's transformer coding winding, and student power source system comprises student's transformer coding winding, and teacher's power-supply system and student power source system are respectively by low pressure AC/DC coding and regulating AC/DC mu balanced circuit; Teacher's coding and regulating unit controls of singly-bound bimodulus on-off control system regulates the low pressure AC/DC coding of teacher's power-supply system, student's coding and regulating unit controls of singly-bound bimodulus on-off control system to regulate the low pressure AC/DC coding of student power source system.
2. education experiment power-supply system according to claim 1, it is characterized in that, described singly-bound bimodulus on-off control system comprises singly-bound bimodulus switch and power supply output control circuit, the output voltage of described singly-bound bimodulus switch control rule power supply output control circuit; Described singly-bound bimodulus switch comprises six non-gate inverters, capacitor, resistance and touch switch; Described power output circuit comprises coding transformer, and described coding transformer is made up of with the phase sequence of 8421 yards combination Transformer Winding.
3. education experiment power-supply system according to claim 1, it is characterized in that, described non-contact radio-frequency power-on management system of swiping the card comprises reader identification circuit, Non-contact radio frequency card reader and delay circuit, output current is divided into two-way after electric leakage master switch, one road is to the equipment master control power input of reader identification circuit, another road enters Non-contact radio frequency card reader, and equipment master control power input is connected with delay circuit.
4. education experiment power-supply system according to claim 1, it is characterized in that, described teacher's power-supply system comprises master control power supply and teacher's socket control unit, and includes over-current protecting unit, overload protection unit, short-circuit protection unit, two-way residual current protective unit;
Described student power source system comprises controlled source and socket control unit, and controlled source control unit and student's socket control unit are independently arranged, and include overload protection unit, acousto-optic warning unit, short circuit lock cell and resetting means.
5. education experiment power-supply system according to claim 4, it is characterized in that, described master control power supply single channel or multichannel control arbitrarily or lock the socket control unit of student power source system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420847941.4U CN204303234U (en) | 2014-12-29 | 2014-12-29 | Education experiment power-supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420847941.4U CN204303234U (en) | 2014-12-29 | 2014-12-29 | Education experiment power-supply system |
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| Publication Number | Publication Date |
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| CN204303234U true CN204303234U (en) | 2015-04-29 |
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| CN201420847941.4U Expired - Fee Related CN204303234U (en) | 2014-12-29 | 2014-12-29 | Education experiment power-supply system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105810060A (en) * | 2015-11-30 | 2016-07-27 | 浙江亚龙教育装备股份有限公司 | Power total control apparatus |
| CN106504626A (en) * | 2017-01-12 | 2017-03-15 | 辽宁文彬教学设备有限公司 | Intelligent laboratory system |
-
2014
- 2014-12-29 CN CN201420847941.4U patent/CN204303234U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105810060A (en) * | 2015-11-30 | 2016-07-27 | 浙江亚龙教育装备股份有限公司 | Power total control apparatus |
| CN106504626A (en) * | 2017-01-12 | 2017-03-15 | 辽宁文彬教学设备有限公司 | Intelligent laboratory system |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150429 Termination date: 20171229 |
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| CF01 | Termination of patent right due to non-payment of annual fee |