CN203340036U - Time relay - Google Patents
Time relay Download PDFInfo
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- CN203340036U CN203340036U CN2013204676885U CN201320467688U CN203340036U CN 203340036 U CN203340036 U CN 203340036U CN 2013204676885 U CN2013204676885 U CN 2013204676885U CN 201320467688 U CN201320467688 U CN 201320467688U CN 203340036 U CN203340036 U CN 203340036U
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Abstract
The utility model relates to a time relay. The time relay comprises a housing, and an electronic circuit board accommodated in the housing. The juncture of the housing is sealed through resin adhesive. The electronic circuit board comprises a power circuit, a trigger signal processing circuit, a first optocoupler isolated driving circuit and a normally-closed output circuit. The trigger signal processing circuit comprises an input optocoupler, a RC time-delay circuit and a 555 integrated circuit, wherein a trigger signal is subjected to isolation transformation of the input optocoupler and then connected to the RC time-delay circuit, and the capacitor terminal in the RC time-delay circuit is connected to the trigger end of the 555 integrated circuit. The first optocoupler isolated driving circuit comprises a set of output optocouplers, wherein the output end of the 555 integrated circuit is connected to input ends of the output optocouplers, and output ends of the output optocouplers are used to control the switch-on and switch-off of the normally-closed output circuit. The normally-closed output circuit comprises a set of switching tubes, wherein the gate of each switching tube is connected to a corresponding output end of the first optocoupler isolated driving circuit, and the drain and the source of each switching tube are leaded out from wire connection terminals of the normally-closed switch respectively.
Description
Technical field
The utility model relates to a kind of time relay.
Background technology
In the special equipment of the occasions such as railway and oil field, mine, the time relay used is mainly the mechanical type time relay at present, volume is large, vibration resistance and impact resistance poor, simultaneously its operation principle determined its delay precision extreme difference, in addition its contact after long-term the use because of the impact of oxidation, arcing and sand and dust, greasy dirt, inevitably have the situation of loose contact, bring great hidden danger to the safety operating of locomotive.
Summary of the invention
The purpose of this utility model is to overcome the defect of prior art, provide a kind of electron type, volume little, hermetically sealed, contactless, without solenoid, working stability and delay precision the high time relay.
For achieving the above object, the utility model adopts a kind of like this time relay, comprise housing and be contained in the electronic circuit board in described housing, the junction of described housing is by the resin glue sealing, described electronic circuit board comprises power circuit, triggering signal treatment circuit, the first optical couple isolation drive circuit and normally closed output circuit
Described triggering signal treatment circuit comprises input optocoupler, RC delay circuit and 555 integrated circuits, described 555 integrated circuits are connected into Schmitt trigger circuit, described RC delay circuit comprises adjustable resistance, triggering signal is connected to described RC delay circuit after the isolated variable of described input optocoupler, and the capacitor terminal in described RC delay circuit is connected to the trigger end of described 555 integrated circuits;
Described the first optical couple isolation drive circuit, comprise one group of output optocoupler, and the output of described 555 integrated circuits is connected to the input of described output optocoupler, and the output of described output optocoupler is for controlling the break-make of described normally closed output circuit;
Described normally closed output circuit, comprise one group of switching tube, and the grid of described switching tube is connected to the output of corresponding described the first optical couple isolation drive circuit, and the drain electrode of described switching tube and source electrode are drawn respectively the binding post of normally closed switch.Compared with the prior art, the beneficial effects of the utility model are embodied in: adopt triggering signal treatment circuit and the first optical couple isolation drive circuit with input optocoupler, the impact of the triggering signal of time delays and the interference-free signal of driver output, reliability is higher than general electronic time relay; Adopt the binding post of switching tube as output switch, carrying load ability is strong, and the arcing phenomenon that may occur while having avoided the contact folding, long service life; The junction of housing adopts the resin glue sealing, has greatly improved the degree of protection of the time relay, can guarantee that long-term use is unaffected under rugged environment; In addition, adopt the delay circuit with RC delay circuit and 555 integrated circuits, delay precision is high, and action is accurate, and can reach the switching characteristic output of expection, and simple in structure, volume is little, is easy to realize.
Especially, the described time relay also comprises inverter, the second optical couple isolation drive circuit and Chang Kai output circuit, the input of described inverter is connected to the output of described 555 integrated circuits, described the second optical couple isolation drive circuit comprises another group output optocoupler, the input of described another group output optocoupler is connected to the output of described inverter, the output of described another group output optocoupler is for controlling the described break-make of often driving output circuit, the described output circuit of often opening comprises another group switching tube, the grid of described another group switching tube is connected to the output of corresponding described the second optical couple isolation drive circuit, the drain electrode of described another group switching tube and the binding post that source electrode is drawn respectively normal open switch.Adopt inverter by the output negate of 555 integrated circuits, for the time relay, export the switching characteristic of two groups of inequalities, the user can select often to open or normally closed switch output according to the actual requirements, and highly versatile, avoid the stock of multiple pattern to deposit.
Especially, described power circuit comprises voltage stabilizing circuit and direct-current input power supplying, described direct-current input power supplying is respectively described the first optocoupler driving isolation circuit, described the second optocoupler driving isolation circuit and the power supply of described inverter after described voltage stabilizing circuit voltage stabilizing, and described direct-current input power supplying exports the binding post of described normal open switch and the binding post of described normally closed switch to.Adopt above power circuit design, operating voltage range is wide, and drive current is large, and carrying load ability is strong.
Especially, the drain electrode end of the drain electrode end of described one group of switching tube and described another group switching tube is connected to ground through current-limiting resistance and light-emitting diode respectively.The employing light-emitting diode carrys out the on off operating mode of display switch pipe, simple and clear, is convenient to the running status that the user checks the time relay.
Especially, describedly often drive output circuit and described normally closed output circuit arranges respectively protective circuit, the grid source electrode of the grid source electrode of described one group of switching tube and described another group switching tube adopts respectively the voltage stabilizing circuit voltage stabilizing, the source electrode of the source electrode of described one group of switching tube and described another group switching tube is respectively through resistance, electric capacity is connected to ground, the drain electrode of the drain electrode of described one group of switching tube and described another group switching tube is respectively through the diode output wiring terminal, between two binding posts of two binding posts of described normal open switch and described normally closed switch respectively and connect piezo-resistance.By the setting of protective circuit, avoid system to be subject to back-emf, the interference of transient surge voltage, for switching tube provides stable operating voltage.
The accompanying drawing explanation
Fig. 1 is the principle block diagram of the utility model embodiment time relay;
Fig. 2 is the schematic diagram of inverter in the utility model embodiment time relay;
Fig. 3 is the schematic diagram that in the utility model embodiment time relay, triggering signal is processed;
Fig. 4 is the schematic diagram of power circuit in the utility model embodiment time relay;
Fig. 5 is indicator light display circuit schematic diagram in the utility model embodiment time relay;
Fig. 6, the 7th, one group of normally closed output circuit schematic diagram in the utility model embodiment time relay;
Fig. 8, the 9th, often open the output circuit schematic diagram for one group in the utility model embodiment time relay;
Figure 10, the 12nd, the schematic diagram of the first optical couple isolation drive circuit in the utility model embodiment time relay;
Figure 11, the 13rd, the schematic diagram of the second optical couple isolation drive circuit in the utility model embodiment time relay.
Embodiment
As shown in Figure 1, a kind of time relay, comprise housing and be contained in the electronic circuit board in housing, the junction of housing is by the resin glue sealing, and electronic circuit board comprises power circuit, the triggering signal treatment circuit, the first optical couple isolation drive circuit and normally closed output circuit
The triggering signal treatment circuit comprises input optocoupler U2, RC delay circuit and 555 integrated circuit U1,555 integrated circuit U1 are connected into Schmitt trigger circuit, the RC delay circuit comprises adjustable resistance R9, triggering signal CTRL is connected to the RC delay circuit after the isolated variable of input optocoupler U2, and the capacitor terminal in the RC delay circuit is connected to the trigger end U1-2 of 555 integrated circuit U1;
The first optical couple isolation drive circuit, comprise one group of output optocoupler U3, U4, and the output U1-3 of 555 integrated circuits is connected to the input of output optocoupler U3, U4, and the output of output optocoupler U3, U4 is for controlling the break-make of normally closed output circuit;
Normally closed output circuit, comprise one group of switch transistor T 1, T2, the grid of switch transistor T 1, T2 is connected to output NC1, the NC2 of the first corresponding optical couple isolation drive circuit, and the drain electrode of switch T1, T2 and source electrode are drawn respectively binding post (NC1-1, NC1-2), (NC2-1, the NC2-2) of normally closed switch.
The time relay also comprises inverter, the second optical couple isolation drive circuit and Chang Kai output circuit, the input of inverter is connected to the output U1-3 of 555 integrated circuit U1, the second optical couple isolation drive circuit comprises another group output optocoupler U5, U6, another group output optocoupler U5, the input of U6 is connected to the output U4-1 of inverter, another group output optocoupler U5, the output of U6 is for controlling the break-make of often driving output circuit, often drive output circuit and comprise another group switch transistor T 3, T4, another organizes switch transistor T 3, the grid of T4 is connected to the output NO1 of the second corresponding optical couple isolation drive circuit, NO2, another organizes switch transistor T 3, the drain electrode of T4 and source electrode are drawn respectively the binding post (NO1-1 of normal open switch, NO1-2), (NO2-1, NO2-2).
Power circuit comprises voltage stabilizing circuit and direct-current input power supplying DCIN, direct-current input power supplying DCIN is respectively the first optocoupler driving isolation circuit, the second optocoupler driving isolation circuit and inverter power supply after the voltage stabilizing circuit voltage stabilizing, and direct-current input power supplying DCIN exports the binding post of normal open switch and the binding post of normally closed switch to.
The drain electrode end of the drain electrode end of one group of switch transistor T 1, T2 and another group switch transistor T 3, T4 is connected to ground through current-limiting resistance R32～R35 and LED 3～LED6 respectively.
Often drive output circuit and normally closed output circuit arranges respectively protective circuit, one group of switch transistor T 1, the grid source electrode of T2 and another group switch transistor T 3, the grid source electrode of T4 adopts respectively the voltage stabilizing circuit voltage stabilizing, one group of switch transistor T 1, the source electrode of T2 and another group switch transistor T 3, the source electrode of T4 is respectively through resistance R 28～R31, capacitor C 9～C12 is connected to ground, one group of switch transistor T 1, the drain electrode of T2 and another group switch transistor T 3, the drain electrode of T4 is respectively through diode D3～D6 output wiring terminal, two binding post (NO1-1 of normal open switch, NO1-2), (NO2-1, NO2-2) and two binding post (NC1-1 of normally closed switch, NC1-2), (NC2-1, NC2-2) between respectively and meet piezo-resistance RV1～RV4.
Claims (6)
1. the time relay, it is characterized in that: comprise housing and be contained in the electronic circuit board in described housing, the junction of described housing is by the resin glue sealing, described electronic circuit board comprises power circuit, the triggering signal treatment circuit, the first optical couple isolation drive circuit and normally closed output circuit
Described triggering signal treatment circuit comprises input optocoupler, RC delay circuit and 555 integrated circuits, described 555 integrated circuits are connected into Schmitt trigger circuit, described RC delay circuit comprises adjustable resistance, triggering signal is connected to described RC delay circuit after the isolated variable of described input optocoupler, and the capacitor terminal in described RC delay circuit is connected to the trigger end of described 555 integrated circuits;
Described the first optical couple isolation drive circuit, comprise one group of output optocoupler, and the output of described 555 integrated circuits is connected to the input of described output optocoupler, and the output of described output optocoupler is for controlling the break-make of described normally closed output circuit;
Described normally closed output circuit, comprise one group of switching tube, and the grid of described switching tube is connected to the output of corresponding described the first optical couple isolation drive circuit, and the drain electrode of described switching tube and source electrode are drawn respectively the binding post of normally closed switch.
2. a kind of time relay according to claim 1, it is characterized in that: the described time relay also comprises inverter, the second optical couple isolation drive circuit and Chang Kai output circuit, the input of described inverter is connected to the output of described 555 integrated circuits, described the second optical couple isolation drive circuit comprises another group output optocoupler, the input of described another group output optocoupler is connected to the output of described inverter, the output of described another group output optocoupler is for controlling the described break-make of often driving output circuit, the described output circuit of often opening comprises another group switching tube, the grid of described another group switching tube is connected to the output of corresponding described the second optical couple isolation drive circuit, the drain electrode of described another group switching tube and the binding post that source electrode is drawn respectively normal open switch.
3. the time relay according to claim 2, it is characterized in that: described power circuit comprises voltage stabilizing circuit and direct-current input power supplying, described direct-current input power supplying is respectively described the first optocoupler driving isolation circuit, described the second optocoupler driving isolation circuit and the power supply of described inverter after described voltage stabilizing circuit voltage stabilizing, and described direct-current input power supplying exports the binding post of described normal open switch and the binding post of described normally closed switch to.
4. according to the described time relay of claim 2 or 3, it is characterized in that: the drain electrode end of the drain electrode end of described one group of switching tube and described another group switching tube is connected to ground through current-limiting resistance and light-emitting diode respectively.
5. according to the described time relay of claim 2 or 3, it is characterized in that: describedly often drive output circuit and described normally closed output circuit arranges respectively protective circuit, the grid source electrode of the grid source electrode of described one group of switching tube and described another group switching tube adopts respectively the voltage stabilizing circuit voltage stabilizing, the source electrode of the source electrode of described one group of switching tube and described another group switching tube is respectively through resistance, electric capacity is connected to ground, the drain electrode of the drain electrode of described one group of switching tube and described another group switching tube is respectively through the diode output wiring terminal, between two binding posts of two binding posts of described normal open switch and described normally closed switch respectively and connect piezo-resistance.
6. the time relay according to claim 4, it is characterized in that: describedly often drive output circuit and described normally closed output circuit arranges respectively protective circuit, the grid source electrode of the grid source electrode of described one group of switching tube and described another group switching tube adopts respectively the voltage stabilizing circuit voltage stabilizing, the source electrode of the source electrode of described one group of switching tube and described another group switching tube is respectively through resistance, electric capacity is connected to ground, the drain electrode of the drain electrode of described one group of switching tube and described another group switching tube is respectively through the diode output wiring terminal, between two binding posts of two binding posts of described normal open switch and described normally closed switch respectively and connect piezo-resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204676885U CN203340036U (en) | 2013-07-26 | 2013-07-26 | Time relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204676885U CN203340036U (en) | 2013-07-26 | 2013-07-26 | Time relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203340036U true CN203340036U (en) | 2013-12-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013204676885U Expired - Lifetime CN203340036U (en) | 2013-07-26 | 2013-07-26 | Time relay |
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| CN (1) | CN203340036U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105652045A (en) * | 2016-01-28 | 2016-06-08 | 长沙云涯电子科技有限责任公司 | Energy storage equipment detection device |
| CN105743478A (en) * | 2016-01-28 | 2016-07-06 | 长沙云涯电子科技有限责任公司 | Mutually exclusive switching circuit |
-
2013
- 2013-07-26 CN CN2013204676885U patent/CN203340036U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105652045A (en) * | 2016-01-28 | 2016-06-08 | 长沙云涯电子科技有限责任公司 | Energy storage equipment detection device |
| CN105743478A (en) * | 2016-01-28 | 2016-07-06 | 长沙云涯电子科技有限责任公司 | Mutually exclusive switching circuit |
| CN105652045B (en) * | 2016-01-28 | 2018-07-13 | 长沙云涯电子科技有限责任公司 | A kind of energy storage device detection device |
| CN105743478B (en) * | 2016-01-28 | 2018-11-30 | 长沙云涯电子科技有限责任公司 | A kind of mutual exclusion switching circuit |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |