CN103680274A - Automatic detection method and device for connection wire of electrical experimental facility - Google Patents
Automatic detection method and device for connection wire of electrical experimental facility Download PDFInfo
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- CN103680274A CN103680274A CN201310729729.8A CN201310729729A CN103680274A CN 103680274 A CN103680274 A CN 103680274A CN 201310729729 A CN201310729729 A CN 201310729729A CN 103680274 A CN103680274 A CN 103680274A
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Abstract
The invention discloses an automatic detection method and an automatic detection device for a connection wire of an electrical experimental facility. The automatic detection device for the connection wire of the electrical experimental facility comprises a (Micro Processing Unit) MCU, an 8155 chip, 24 relays, 24 free-wheeling diodes, 24 triodes, 48 connection terminals, 24 current-limiting resistors, 24 pull-up resistors, a communication module, an alarming module and a keyboard module. The automatic detection device for the connection wire of the electrical experimental facility adopts the triodes to drive the relays, so that the circuit is simple in structure, the elements are less, the cost is low, the connection status among the terminals of the experimental facility can be automatically detected, the elements are protected effectively, and the reliability is high; the intelligent detection device is adopted, so that the workload of experiment advisors can be effectively reduced; once the detection device emits alarm information, students can find problems by themselves, so that the problem-solving ability of the students is effectively improved, and the quality of teaching is ensured. The automatic detection method and the automatic detection device for the connection wire of the electrical experimental facility are applicable to all electrical experimental facilities for teaching.
Description
Technical field
The present invention relates to a kind of electric information experimental facilities connecting line automatic testing method and device, be specifically related to a kind of device of that control based on Micro-processor MCV, intelligentized, automatic discrimination wiring correctness, belong to electrical engineering field.
Background technology
Experiment is the natural science applied a kind of important method of research, electric information experiment is even more important in undergraduate education teaching link, except further consolidating knowwhy, also can cultivate students experimental skill, for being engaged in engineering work in the future, accomplish fluently necessary basis.The first step that completes electric information experiment is exactly the wiring between circuit, and in teaching Process of experiment, often appearance, due to the phenomenon that student's wiring error causes circuit or components and parts to be burnt, causes any property loss, and even occurs accident.
Whether existing experimental teaching, all adopts the first wiring of student substantially, more wrong by experiment teacher inspection, and then allows that student carries out related experiment content.This inspection method, takes time and effort, inefficiency, and cannot get rid of up hill and dale the impact of human factor.
Summary of the invention
The object of the present invention is to provide a kind of electric information experimental facilities connecting line automatic testing method and device, to raise the efficiency, reduce costs, to improve reliability.
In order to solve above technical matters, the concrete technical scheme that the present invention adopts is as follows:
An electric information experimental facilities connecting line automatic detection device, is characterized in that comprising: Micro-processor MCV, 8155 chips, relay J
i, sustained diode
i, triode Q
i, 48 connection terminals are connection terminal T
m, current-limiting resistance R
i, pull-up resistor R
24+i, for writing the communication module 201 of " experimental provision terminal correct wiring " program, for the alarm module 202 of wiring error indication, for accepting the Keysheet module 203 of user input instruction; I=1,2 ..., 24; M=1,2 ..., 48;
Described Micro-processor MCV is connected with 8155 chips by bus interface;
Relay J
icoil and sustained diode
iparallel connection, and one end is connected with power supply+12V, the other end and triode Q
icollector is connected; Triode Q
itransmitting collection ground connection, triode Q
ibase stage and current-limiting resistance R
ibe connected, thereby form i loop, i=1,2 ..., 24, totally 24 loops; Described 24 loops are subject to the P12 port controlling of Micro-processor MCV;
Relay J
inormally closed contact one end use connection terminal T with experiment
2 * i-1connect the other end and 8155 ports and pull-up resistor R
24+ione end is connected, pull-up resistor R
24+ithe other end is connected with driving power VCC, relay J
inormally opened contact 1 and another experiment connection terminal T
2 * iconnect, that is: VCC, J
i, connection terminal T
2 * i-1, connection terminal T
2 * i, pull-up resistor R
24+i, 8155 port PA0 form i output circuit, i=1,2 ..., 24; By that analogy, No. 24 output circuits altogether;
Described Micro-processor MCV arranges the PA0 of 8155 chips by bus, PA1 ..., PA7, PC0, PC1, PC2 and PC3 totally 12 ports as delivery outlet, the PB0 of 8155 chips ..., PB7, PC4 ..., PC7 totally 12 ports as input port.
Method according to described a kind of electric information experimental facilities connecting line automatic detection device, is characterized in that comprising the following steps:
12 connection terminal P of terminal block 101 are connected with 12 connection terminal T of automatic detection device respectively; 12 connection terminal V of terminal block 102 are connected with other 12 connection terminal T of automatic detection device respectively;
Step 2, by requirement of experiment, after the connection terminal that needs wiring is carefully connected the wire, press Keysheet module 203, now Micro-processor MCV sends and checks instruction according to the program writing in advance, the a certain delivery outlet that 12 output ports of 8155 chips are set is in order low level 0, and all the other delivery outlets are high level 1; Then read successively the level signal of 12 input ports, if corresponding input port is low level 0, wiring is correct, otherwise wiring error; If all input ports are completely corresponding with the level of delivery outlet, that is wiring is correct;
Step 3, when wiring is correct, the P12 of Micro-processor MCV exports a high level, makes triode Q
iconducting, i=1,2 ..., 24; Relay J
icoil electricity, i=1,2 ..., 24; Corresponding relay J
inormally closed contact 2, normally closed contact 3 disconnect, normally opened contact 1,2 adhesives of normally opened contact, thereby connection terminal T
2 * mby connection terminal J
2 * m-1contact 1, contact 2 and connection terminal T
2 * m-1link together, connection terminal T
2 * m-1with connection terminal T
2 * m+1by wire L
mlink together, connection terminal T
2 * m+1pass through relay J
2 * mcontact 1, contact 2 and connection terminal T
2 * m+2link together; M=1,2 ..., 12, thus just realized the correct line of whole experiment;
Step 4, after whole experiment finishes, presses Keysheet module 203, and a low level of P12 output of Micro-processor MCV, makes triode Q
iturn-off, i=1,2 ..., 24; Now relay coil loses electric current, and contact connection state recovers former state.
Once certain line, make a mistake, that is Micro-processor MCV input port data detected and to set in advance data different, now warning device 202 sends warning message, and the P12 of Micro-processor MCV output remains low level, now triode Q
iobstructed, so relay J
icoil disconnect, relay J
ithe adhesive situation of contact there is not any change, whole system just keeps off state, and then protection components and parts, the situation of having avoided components and parts to burn because wiring makes mistakes; Described i=1,2 ..., 24.
the present invention has beneficial effect.The present invention has adopted triode to drive the mode of relay, makes that circuit structure is simple, components and parts are few, and cost is low, and the connection state of detection terminal, has protected components and parts effectively automatically, and reliability is high, realized precision control; The present invention adopts intelligent detection device, effectively reduced experiment teacher's workload, once occur that situation can independently be searched problem by student, has effectively improved the settle a dispute by the parties concerned themselves ability of problem of student, has guaranteed quality of instruction.
Accompanying drawing explanation
Fig. 1 is the structural drawing of automatic detection device of the present invention.
Fig. 2 is the line graph of automatic detection device of the present invention.
Fig. 3 is the level value of Micro-processor MCV input/output port PA of the present invention, PBA, PC.
Embodiment
Below in conjunction with drawings and the specific embodiments, technical scheme of the present invention is described in further detail.
Electric information experimental facilities connecting line automatic testing method and a device, comprise Micro-processor MCV, 8155 chips, 24 relays, i.e. relay J
1, relay J
2..., relay J
24; 24 fly-wheel diodes, i.e. relay D
1, relay D
2..., relay D
24; 24 triodes, i.e. triode Q
1, triode Q
2..., triode Q
24; 48 connection terminal T
1, connection terminal T
2..., connection terminal T
48, 24 current-limiting resistance, i.e. current-limiting resistance R
1, current-limiting resistance R
2..., current-limiting resistance R
24; 24 pull-up resistors are pull-up resistor R
25, pull-up resistor R
26..., pull-up resistor R
48, communication module 201, alarm module 202, key-press module 203.
Described Micro-processor MCV is connected with 8155 chips by bus interface;
Wherein, relay J
icoil and sustained diode
iparallel connection, and one end is connected with power supply+12V, the other end and triode Q
icollector is connected; Triode Q
itransmitting collection ground connection, triode Q
ibase stage and current-limiting resistance R
ibe connected, thereby form i loop, all 24 loops are subject to the P12 port controlling of Micro-processor MCV; I=1,2 ..., 24;
Wherein, a relay J
inormally closed contact one end use connection terminal T with experiment
2 * i-1connect the other end and 8155 ports and pull-up resistor R
24+ione end is connected, pull-up resistor R
24+ithe other end is connected with driving power VCC, relay J
inormally opened contact 1 and another experiment connection terminal T
2 * iconnect, that is: VCC, J
i, connection terminal T
2 * i-1, connection terminal T
2 * i, pull-up resistor R
24+i, 8155 port PA0 form i output circuit, i=1,2 ..., 24; By that analogy, No. 24 output circuits altogether;
Described Micro-processor MCV arranges the PA0 of 8155 chips by bus, PA1 ..., PA7, PC0, PC1, PC2 and PC3 totally 12 ports as delivery outlet, the PB0 of 8155 chips ..., PB7, PC4 ..., PC7 totally 12 ports as input port.
Communication module 201 is for writing " experimental provision terminal correct wiring " program;
Alarm module 202 is indicated for wiring error;
Keysheet module 203 is for accepting user input instruction;
Before experiment, in advance by " experimental provision terminal correct wiring " with computer program form, by communication module 201, download in Micro-processor MCV.
As shown in Figure 2, before experiment, the connection terminal P of terminal block 101
jconnection terminal T with automatic detection device
4 * j-2connect; The connection terminal V of terminal block 102
j, with the connection terminal T of automatic detection device
4 * jconnect; The connection terminal P of terminal block 101
j, connection terminal T
j, connection terminal T
j+1, connection terminal T
j+2, connection terminal T
j+3, and the connection terminal V of terminal block 102
jbe one group, j=1,2 ... 12, by that analogy, have 12 groups.
As shown in Figure 2, in automatic detection device dashed rectangle, black solid connection terminal T
2 * i-1,during for student experimenting, need the terminal of wiring, i=1,2 ... 24.
As shown in Figure 1, by requirement of experiment wiring, connection terminal T
2i-1by wire and connection terminal T
2i+1,i=1,2 ..., 23; Press Keysheet module 203, now Micro-processor MCV sends instruction according to the program writing in advance, as shown in Figure 3, the PA0 of 8155 chips is set in order,, PA7, PC0,, the PC3 altogether a certain delivery outlet of 12 output ports is low level 0, all the other delivery outlets are high level 1; Then read successively PB0 ..., PB7, PC4 ..., PC7 is the level signal of 12 input ports altogether, if corresponding input port is low level 0, wiring is correct, otherwise wiring error.
If corresponding input port, the level of delivery outlet is completely corresponding, that is wiring is correct, and the P12 of Micro-processor MCV exports a high level, makes triode Q
1to Q
24conducting, relay J
1to relay J
24conducting, corresponding relay J
1to relay J
24normally closed contact 2, normally closed contact 3 disconnect, normally opened contact 1,2 adhesives of normally opened contact, thereby connection terminal T
2pass through J
1contact 1, contact 2 and black solid connection terminal T
1link together, black solid connection terminal T
1, black solid connection terminal T
3by wire, L1 links together, black solid connection terminal T
3pass through relay J
2contact 1, contact 2 and connection terminal T
4link together; The electric line situation of all the other 11 groups of circuit is with identical as mentioned above, thereby just realized the correct line of whole experiment.
After whole experiment finishes, by key-press module 203, whole system is disconnected, now relay coil loses electric current, and contact connection state recovers former state.
Once certain line, make a mistake, that is the input port data that detect of Micro-processor MCV are to set in advance data different, now warning device 202 sends warning message, and the P12 of Micro-processor MCV output remains low level, now triode Q
1to triode Q
24obstructed, so relay J
1to relay J
24coil disconnect, relay J
1to relay J
24the adhesive situation of contact there is not any change, whole system just keeps off state, and then protection components and parts, the situation of having avoided components and parts to burn because wiring makes mistakes.
the course of work of the present inventionas follows:
1, software writes: teacher is according to the wiring situation in experimentation in experiment, by PC, utilizes the communication module 201 that automatically detects wiring situation device, in Micro-processor MCV, writes correct wiring situation data, output valve as shown in Figure 3.
2, line: in before experiment, teacher has connected line by the outside connection terminal that automatically detects wiring situation device in advance, as shown in Figure 2.Student is responsible for connecting the inner side connection terminal of automatic detection device, the as shown in Figure 2 connection terminal in dotted line frame in experimentation.
3, automatically detect: after wiring completes, press Keysheet module 203, the delivery outlet PA0 to PA7 of Micro-processor MCV by total line traffic control 8155 chips and PC0 to PC3 change successively level and change, as shown in Figure 3.The level that Micro-processor MCV detects the input port PB0 to PB7 of 8155 chips and PC4 to PC7 input by bus changes, and itself and the data of input port are as shown in Figure 3 compared.When wiring is errorless, the two data is identical, and now the P12 mouth of Micro-processor MCV will be exported high level, make triode Q
1to triode Q
24conducting, thereby relay J
1to relay J
24coil electricity, relay J
1to relay J
24contact by original contact 2, contact 3 be connected change contact 1 into, contact 2 is connected, and then the black solid connection terminal automatically detecting in the dotted line frame of device of wiring situation links together with the connection terminal outside it, for example the connection terminal T in Fig. 2
2 * j, connection terminal T
2 * j-1link together, then by wire again with connection terminal T
2 * j+1, connection terminal T
2 * j+2link together, and the connection terminal P of 101 devices
jagain with connection terminal T
2 * jconnect together, the connection terminal V of 102 devices
jwith connection terminal T
2 * j+2link together, and then make the connection terminal P in left side
jconnection terminal V with right side
jlink together, j=1 herein, 2 ..., 12, thus realized correct line.If wiring is wrong, Micro-processor MCV the input end PB0 to PB7 of 8155 chips detected and the variation of the level of PC4 to PC7 changes and has any different with its level writing in advance, then keep the P12 end of Micro-processor MCV to be output as low level, so make relay J
1to relay J
24coil no power, thereby the connection terminal P on the left of making
jconnection terminal V with right side
jdisconnect, j=1,2 ... 12, effectively protected circuit, avoided the damage of components and parts.
Claims (3)
1. an electric information experimental facilities connecting line automatic detection device, is characterized in that comprising: Micro-processor MCV, 8155 chips, relay J
i, sustained diode
i, triode Q
i, 48 connection terminals are connection terminal T
m, current-limiting resistance R
i, pull-up resistor R
24+i, for writing the communication module 201 of " experimental provision terminal correct wiring " program, for the alarm module 202 of wiring error indication, for accepting the Keysheet module 203 of user input instruction; I=1,2 ..., 24; M=1,2 ..., 48;
Described Micro-processor MCV is connected with 8155 chips by bus interface;
Relay J
icoil and sustained diode
iparallel connection, and one end is connected with power supply+12V, the other end and triode Q
icollector is connected; Triode Q
itransmitting collection ground connection, triode Q
ibase stage and current-limiting resistance R
ibe connected, thereby form i loop, i=1,2 ..., 24, totally 24 loops; Described 24 loops are subject to the P12 port controlling of Micro-processor MCV;
Relay J
inormally closed contact one end use connection terminal T with experiment
2 * i-1connect the other end and 8155 ports and pull-up resistor R
24+ione end is connected, pull-up resistor R
24+ithe other end is connected with driving power VCC, relay J
inormally opened contact 1 and another experiment connection terminal T
2 * iconnect, that is: VCC, J
i, connection terminal T
2 * i-1, connection terminal T
2 * i, pull-up resistor R
24+i, 8155 port PA0 form i output circuit, i=1,2 ..., 24; By that analogy, No. 24 output circuits altogether;
Described Micro-processor MCV arranges the PA0 of 8155 chips by bus, PA1 ..., PA7, PC0, PC1, PC2 and PC3 totally 12 ports as delivery outlet, the PB0 of 8155 chips ..., PB7, PC4 ..., PC7 totally 12 ports as input port.
2. the method for a kind of electric information experimental facilities connecting line automatic detection device according to claim 1, is characterized in that comprising the following steps:
Step 1, with computer program form, downloads to " experimental provision terminal correct wiring " in Micro-processor MCV by communication module 201;
12 connection terminal P of terminal block 101 are connected with 12 connection terminal T of automatic detection device respectively; 12 connection terminal V of terminal block 102 are connected with other 12 connection terminal T of automatic detection device respectively;
Step 2, by requirement of experiment, after the connection terminal that needs wiring is carefully connected the wire, press Keysheet module 203, now Micro-processor MCV sends and checks instruction according to the program writing in advance, the a certain delivery outlet that 12 output ports of 8155 chips are set is in order low level 0, and all the other delivery outlets are high level 1; Then read successively the level signal of 12 input ports, if corresponding input port is low level 0, wiring is correct, otherwise wiring error; If all input ports are completely corresponding with the level of delivery outlet, that is wiring is correct;
Step 3, when wiring is correct, the P12 of Micro-processor MCV exports a high level, makes triode Q
iconducting, i=1,2 ..., 24; Relay J
icoil electricity, i=1,2 ..., 24; Corresponding relay J
inormally closed contact 2, normally closed contact 3 disconnect, normally opened contact 1,2 adhesives of normally opened contact, thereby connection terminal T
2 * mby connection terminal J
2 * m-1contact 1, contact 2 and connection terminal T
2 * m-1link together, connection terminal T
2 * m-1with connection terminal T
2 * m+1by wire L
mlink together, connection terminal T
2 * m+1pass through relay J
2 * mcontact 1, contact 2 and connection terminal T
2 * m+2link together; M=1,2 ..., 12, thus just realized the correct line of whole experiment;
Step 4, after whole experiment finishes, presses Keysheet module 203, and a low level of P12 output of Micro-processor MCV, makes triode Q
iturn-off, i=1,2 ..., 24; Now relay coil loses electric current, and contact connection state recovers former state.
3. the method for a kind of electric information experimental facilities connecting line automatic detection device according to claim 2, it is characterized in that: once certain line, make a mistake, that is Micro-processor MCV input port data detected and to set in advance data different, now warning device 202 sends warning message, and the P12 of Micro-processor MCV output remains low level, now triode Q
iobstructed, so relay J
icoil disconnect, relay J
ithe adhesive situation of contact there is not any change, whole system just keeps off state, and then protection components and parts, the situation of having avoided components and parts to burn because wiring makes mistakes; Described i=1,2 ..., 24.
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| CN111754734B (en) * | 2020-05-22 | 2022-05-31 | 金鑫 | Intelligent alarm device for electric switch |
| CN113777533A (en) * | 2021-08-31 | 2021-12-10 | 江门市第一职业高级中学 | Wiring test method and wiring test system |
| CN115792737A (en) * | 2022-11-30 | 2023-03-14 | 山东大学 | Detection device and method for electrical wiring |
| CN117334099A (en) * | 2023-10-31 | 2024-01-02 | 广州工程技术职业学院 | Intelligent teaching method and device for electric control circuit, equipment and storage medium |
| CN117334099B (en) * | 2023-10-31 | 2024-05-10 | 广州工程技术职业学院 | Intelligent teaching method and device for electric control circuit, equipment and storage medium |
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