CN102393498B - Testing apparatus for preventing reverse phenomenon of diode - Google Patents
Testing apparatus for preventing reverse phenomenon of diode Download PDFInfo
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- CN102393498B CN102393498B CN 201110413452 CN201110413452A CN102393498B CN 102393498 B CN102393498 B CN 102393498B CN 201110413452 CN201110413452 CN 201110413452 CN 201110413452 A CN201110413452 A CN 201110413452A CN 102393498 B CN102393498 B CN 102393498B
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Abstract
The invention discloses a testing apparatus for preventing a reverse phenomenon of a diode. The testing apparatus comprises a first test terminal and a second test terminal; and a tested diode is overlapped between the test terminal and the second terminal. And the testing apparatus is characterized in that: the testing apparatus also comprises a relay, an alarm and a rest switch; and the relay is provided with a normally open switch, a first normally closed switch and a second normally closed switch. Besides, one end of the normally open switch is connected with an anode of a power supply and the test terminal; and the other end of the normally open switch is connected with an input terminal of the relay and the test terminal. An output terminal of the relay is connected with one end of the alarm; and the other end of the alarm is in series connection with the rest switch and then is connected with a cathode of the power supply. Substantial effects of the testing apparatus are as follows: the circuit structure is simple; the testing apparatus can be implemented conveniently; reverse materials on a production line can be automatically tested; it can be prevented that a reverse diode is flown into a finished product; there is no high positioning requirement on an element during the testing process; and the product quality can be effectively improved and reliability of the product quality is also enhanced.
Description
Technical field
The present invention relates to a kind of proving installation, specifically, is a kind of proving installation be used to preventing diode reverse.
Background technology
In the diode production process, often need to determine the positive-negative polarity of diode.In case occur the backward dioded pipe in the finished product, not only affect the image of manufacturer, and might cause major safety risks, even jeopardize life safety.
And on production line, pass through first often polarity test, and then be emitted on according to the order of sequence on the connecting gear according to certain polarity, send into successively in every procedure by connecting gear.But because the discharge of connecting gear is insensitive, production gets stuck, jumps the factors such as material or employee's maloperation, usually cause reverse material to flow in the finished product, on production line, also lack a kind of device that can automatically test and prevent diode reverse.
Summary of the invention
For the deficiencies in the prior art, the purpose of this invention is to provide a kind of proving installation be used to preventing diode reverse, can automatically detect the reverse material on the streamline, prevent that reverse diode from flowing in the finished product.
To achieve these goals, the scheme of the present invention's employing is as follows:
A kind of proving installation be used to preventing diode reverse, comprise the first test lead and the second test lead, between described the first test lead and the second test lead, overlap measured diode, its key is: also comprise relay, alarm and reset switch, its repeat circuit is provided with normal open switch, the first normally closed switch and the second normally closed switch;
One end of described normal open switch and positive source be connected test lead and be connected, the other end of this normal open switch and the input end of relay be connected test lead and be connected, the output terminal of relay is connected with an end of described alarm, links to each other with power cathode behind the other end string reset switch of this alarm;
Described the first normally closed switch is serially connected in PLC (Programmable Logic Controller, programmable logic controller (PLC)) with the first connecting line of frequency converter on, described the second normally closed switch is serially connected on the second connecting line of PLC and frequency converter, and the output terminal of described frequency converter links to each other with motor.
When measured diode is that positive flow is fashionable, the first test lead is connected with the negative pole of measured diode, the second test lead is connected with the positive pole of measured diode, almost do not have electric current to flow through on the measured diode, relay is not worked, and normal open switch is in off-state, the first normally closed switch and the second normally closed switch are in closure state, therefore alarm is not worked, and PLC outputs a control signal in the frequency converter, thus the control machine operation.
If measured diode is reverse inflow, then the first test lead is connected with the positive pole of measured diode, and the second test lead is connected with the negative pole of measured diode, and measured diode consists of current path, inflow current in the relay, relay work, normal open switch is closed, and the first normally closed switch and the second normally closed switch disconnect, at this moment, the control signal of PLC can't arrive in the frequency converter, and motor quits work, and alarm produces warning message simultaneously.
Even measured diode is seen off, because normal open switch is closed, current path still keeps, must press reset switch this moment, allow circuit disconnect, relay quits work, and normal open switch recovers off-state, the first normally closed switch and the second normally closed switch recover closure state, thereby normal operation recovers in system.
As further describing, described a kind of proving installation be used to preventing diode reverse also is provided with test panel, this test panel is installed on the output shaft of described motor, edge at test panel is provided with positioning tooth, during test, described measured diode is overlapped between two test panels, and the positioning tooth on the test panel is fixed the pin of measured diode.
Described alarm is light emitting diode, also can be hummer or other warning devices.
For convenient test, the end of described the first test lead and the second test lead is provided with test pieces.
Remarkable result of the present invention is: circuit structure is simple, and it is convenient to implement, and can automatically test the reverse material on the production line, prevent that backward dioded from flowing in the finished product, not high to the element positioning requirements during test yet, Effective Raise product quality, strengthen the reliability of product quality.
Description of drawings
Fig. 1 is the fashionable circuit theory diagrams of measured diode positive flow;
Fig. 2 is the fashionable circuit theory diagrams of measured diode reverse direction flow;
Fig. 3 is the structural representation of test panel.
Embodiment
Hereinafter with reference to accompanying drawing, specific embodiments of the invention are described in detail.
Such as Fig. 1, shown in Figure 2, a kind of proving installation be used to preventing diode reverse, comprise the first test lead T1, the second test lead T2, relay J, alarm D1 and reset switch S, described relay J is provided with normal open switch K1, the first normally closed switch K2 and the second normally closed switch K3, the end of described normal open switch K1 and positive source be connected test lead T1 and be connected, the other end of this normal open switch K1 and the input end of relay J be connected test lead T2 and be connected, overlap joint measured diode D between described the first test lead T1 and the second test lead T2, the output terminal of relay J is connected with the end of described alarm D1, link to each other with power cathode behind the other end string reset switch S of this alarm D1, in the present embodiment, alarm D1 is the alarm lamp that light emitting diode is made.
When detecting backward dioded for forced stoppage; the first normally closed switch K2 of relay J is serially connected on the first connecting line of PLC and frequency converter; the second normally closed switch K3 of relay J is serially connected on the second connecting line of PLC and frequency converter, and the output terminal of frequency converter links to each other with motor M.Here only in order to realize the switch control of motor M, the frequency conversion control technique of PLC control and motor M belongs to well known technology, does not repeat them here.
As shown in Figure 3, in order can on production line, automatically to test, this device also is provided with test panel P, this test panel P is installed on the output shaft of described motor M, edge at test panel P is provided with positioning tooth, during test, described measured diode D is overlapped between the two test panel P, and the positioning tooth on the test panel P is fixed the pin of measured diode D.
For convenient test, the end of described the first test lead T1 and the second test lead T2 is provided with test pieces.
Principle of work of the present invention is:
When measured diode D is that positive flow is fashionable, as shown in Figure 1, the first test lead T1 is connected with the negative pole of measured diode D, and the second test lead T2 is connected with the positive pole of measured diode D, does not almost have electric current to flow through on the measured diode D, relay J is not worked, normal open switch K1 is in off-state, and the first normally closed switch K2 and the second normally closed switch K3 are in closure state, so alarm D1 does not work, PLC outputs a control signal in the frequency converter, thus the work of control motor M.
If measured diode D is reverse inflow, as shown in Figure 2, the first test lead T1 is connected with the positive pole of measured diode D, the second test lead T2 is connected with the negative pole of measured diode D, measured diode D consists of current path, inflow current in the relay J, relay J work, normal open switch K1 is closed, and the first normally closed switch K2 and the second normally closed switch K3 disconnect, at this moment, the control signal of PLC can't arrive in the frequency converter, motor M quits work, and alarm D1 produces warning message simultaneously, and backward dioded has appearred in the prompting employee.
In this state, even measured diode D sees off, because normal open switch K1 is closed, current path still keeps, and must press reset switch S, the electric current in the interrupt circuit this moment, allow relay J quit work, normal open switch K1 recovers off-state, and the first normally closed switch K2 and the second normally closed switch K3 recover closure state, thereby normal operation recovers in system.
Claims (2)
1. proving installation that is used for preventing diode reverse, comprise the first test lead (T1) and the second test lead (T2), between described the first test lead (T1) and the second test lead (T2), overlap measured diode (D), it is characterized in that: also comprise relay (J), alarm (D1) and reset switch (S), its repeat circuit (J) is provided with normal open switch (K1), the first normally closed switch (K2) and the second normally closed switch (K3);
One end of described normal open switch (K1) and positive source be connected test lead (T1) and be connected, the input end of the other end of this normal open switch (K1) and relay (J) be connected test lead (T2) and be connected, the output terminal of relay (J) is connected with an end of described alarm (D1), links to each other with power cathode behind the other end string reset switch (S) of this alarm (D1);
Described the first normally closed switch (K2) is serially connected on the first connecting line of PLC and frequency converter, and described the second normally closed switch (K3) is serially connected on the second connecting line of PLC and frequency converter, and the output terminal of described frequency converter links to each other with motor (M);
Be provided with test panel (P), this test panel (P) is installed on the output shaft of described motor (M), edge at test panel (P) is provided with positioning tooth, during test, described measured diode (D) is overlapped between two test panels (P), and the positioning tooth on the test panel (P) is fixed the pin of measured diode (D);
Described alarm (D1) is light emitting diode.
2. a kind of proving installation be used to preventing diode reverse according to claim 1, it is characterized in that: the end of described the first test lead (T1) and the second test lead (T2) is provided with test pieces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110413452 CN102393498B (en) | 2011-12-13 | 2011-12-13 | Testing apparatus for preventing reverse phenomenon of diode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110413452 CN102393498B (en) | 2011-12-13 | 2011-12-13 | Testing apparatus for preventing reverse phenomenon of diode |
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| Publication Number | Publication Date |
|---|---|
| CN102393498A CN102393498A (en) | 2012-03-28 |
| CN102393498B true CN102393498B (en) | 2013-10-23 |
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| CN 201110413452 Active CN102393498B (en) | 2011-12-13 | 2011-12-13 | Testing apparatus for preventing reverse phenomenon of diode |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201732141U (en) * | 2010-05-05 | 2011-02-02 | 如皋市易达电子有限责任公司 | Diode OS detector |
| CN201812030U (en) * | 2010-09-29 | 2011-04-27 | 北京航天自动控制研究所 | Detecting device of relays |
| CN201852899U (en) * | 2010-10-25 | 2011-06-01 | 河南久大电子电器有限公司 | Automatic conduction testing device for semiconductor substrates |
| CN202330617U (en) * | 2011-12-13 | 2012-07-11 | 重庆平伟实业股份有限公司 | Testing device for preventing inversion of diodes |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0836010A (en) * | 1994-07-20 | 1996-02-06 | Nissin Electric Co Ltd | Relay testing converter |
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2011
- 2011-12-13 CN CN 201110413452 patent/CN102393498B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201732141U (en) * | 2010-05-05 | 2011-02-02 | 如皋市易达电子有限责任公司 | Diode OS detector |
| CN201812030U (en) * | 2010-09-29 | 2011-04-27 | 北京航天自动控制研究所 | Detecting device of relays |
| CN201852899U (en) * | 2010-10-25 | 2011-06-01 | 河南久大电子电器有限公司 | Automatic conduction testing device for semiconductor substrates |
| CN202330617U (en) * | 2011-12-13 | 2012-07-11 | 重庆平伟实业股份有限公司 | Testing device for preventing inversion of diodes |
Non-Patent Citations (1)
| Title |
|---|
| JP特开平8-36010A 1996.02.06 |
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| CN102393498A (en) | 2012-03-28 |
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