CN204424169U - A kind of high accuracy tamper-resistant time relay - Google Patents
A kind of high accuracy tamper-resistant time relay Download PDFInfo
- Publication number
- CN204424169U CN204424169U CN201520128855.2U CN201520128855U CN204424169U CN 204424169 U CN204424169 U CN 204424169U CN 201520128855 U CN201520128855 U CN 201520128855U CN 204424169 U CN204424169 U CN 204424169U
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- relay
- high accuracy
- time relay
- interference
- voltage
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Abstract
A kind of high accuracy tamper-resistant time relay, forms the time relay by high accuracy delay unit and auxiliary relay; Time relay input is provided with anti-interference input unit, voltage sampling unit, and described anti-interference input unit comprises full-wave rectification bridge, voltage stabilizing circuit, divider resistance and power resistor; Anti-interference input unit connects coil and the contact of auxiliary relay; Described voltage sampling unit comprises the circuit of three resistant series, and wherein a resistance is sampling resistor, this resistor coupled in parallel one voltage-stabiliser tube; The signal of sampling resistor exports and is connected to high accuracy delay unit.Even if there is strong interference signal in scene, the action message that still can ensure product self and the relay reliably returned.It comprises housing, power inleting terminal, anti-jamming circuit, voltage sampling circuit, CPU, relay output loop, coil, normally opened contact and normally-closed contact.When strong interference signal appears in product input, no matter the interference signal duration how long, and what product can not be disturbed signal affects generation misoperation, ensure that the safety and reliability of electric field.This tamper-resistant time relay is applicable to all to time delays required precision and the higher occasion of the anti-interference requirement of product.
Description
Technical field
The utility model relates to a kind of relay, particularly relates to one and has anti-interference function split-second precision relay.
Background technology
The time relay (time relay) is that the one of auxiliary relay is perfect, refer to after adding the actuating signal that (or removing) input, its output circuit need just produce through the correct time of regulation a kind of relay that signal great-jump-forward changes (or contact action).The existing time relay, is inputted by power supply, and after CPU time delay, relay is outputed.And when the interference signal that on-the-spot existence is comparatively strong, do not provide suitable solution.
Utility model content
The utility model object is: in order to overcome the interference signal of electric field, the utility model provides a kind of high accuracy tamper-resistant time relay, solve in the environment having strong interference signal, even if interference signal long-term existence, auxiliary relay still can action message and returning.
For achieving the above object, the technical solution adopted in the utility model is: a kind of high accuracy tamper-resistant time relay, forms the time relay by high accuracy delay unit and auxiliary relay; Time relay input is provided with anti-interference input unit, voltage sampling unit, and described anti-interference input unit comprises full-wave rectification bridge, voltage stabilizing circuit, divider resistance and power resistor; Anti-interference input unit connects coil and the contact of auxiliary relay; Described voltage sampling unit comprises the circuit of three resistant series, and wherein a resistance is sampling resistor, this resistor coupled in parallel one voltage-stabiliser tube; The signal of sampling resistor exports and is connected to high accuracy delay unit.
The unit of outputing of the time relay is provided with power switch pipe.
A sampling resistor voltage-stabiliser tube in parallel is as rear class protection device; The signal of sampling resistor exports and is connected to high accuracy delay unit; High accuracy delay unit controls energetic start up loop and voltage sampling unit cooperatively interacts, and makes anti-jamming effectiveness and operating value control to be promoted further.
Beneficial effect: the utility model is in the use of reality, and anti-interference input unit carries out filtering to interference signal; Sample information to the magnitude of voltage sampling of input, and is delivered to the CPU of high accuracy delay unit by voltage sampling unit; The voltage sample value of high accuracy delay unit to input identifies, starts timing after meeting the demands, and timing time arrives backward relay and outputs unit output pwm pulse; The PWM ripple that unit accepts CPU output outputed by auxiliary relay, and the conducting of driven MOS pipe, relay is outputed.
Operationally, both filtering interference signals effectively, have also carried out accurate identification to input voltage, make product have higher reliability the product of this programme.Even if there is strong interference signal in scene, the action message that still can ensure product self and the relay reliably returned.When strong interference signal appears in input, no matter the interference signal duration how long, and what product can not be disturbed signal affects generation misoperation, ensure that the safety and reliability of electric field.This tamper-resistant time relay is applicable to all to time delays required precision and the higher occasion of the anti-interference requirement of product.
Accompanying drawing explanation
The anti-interference input unit schematic diagram of Fig. 1 tamper-resistant time relay;
Cell schematics outputed by Fig. 2 tamper-resistant time relay electrical equipment;
Fig. 3 tamper-resistant time relay workflow diagram.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.
The anti-interference relay of a kind of high accuracy, in auxiliary relay, input is provided with anti-interference input unit, high accuracy delay unit, voltage sampling unit and relay and outputs unit, described anti-interference input unit comprises full-wave rectification bridge, voltage stabilizing circuit, divider resistance and power resistor, anti-interferencely inputs to relay coil and contact; Described high accuracy delay unit comprises STM8 single-chip microcomputer; Described voltage sampling unit comprises 3 resistant series, and sampling resistor parallel connection protection voltage-stabiliser tube.
The time relay is outputed unit and is comprised power switch pipe, and energetic start up loop and sampling circuit cooperatively interact, and makes anti-jamming effectiveness and operating value control to be promoted further.Described high accuracy delay unit comprises STM8 single-chip microcomputer.
Normally-closed contact and normally opened contact adopt oxidation resistant material, are specially silver-colored nickel or tin oxide.
In the use of reality, anti-interference input unit carries out filtering to interference signal; Sample information to the magnitude of voltage sampling of input, and is delivered to CPU and is identified by voltage sampling unit; The voltage sample value of high accuracy delay unit to input identifies, meets the demands and just starts to carry out timing, and timing time arrives backward relay and outputs unit output pwm pulse; The PWM ripple that unit accepts CPU output outputed by relay, and the conducting of driven MOS pipe, relay is outputed.Operationally, both filtering interference signals effectively, have also carried out accurate identification to input voltage, make product have higher reliability product.
The housing of relay should select anti-fire proofing, and should carry out withstand voltage, insulation and the test such as electromagnetic compatibility of complete machine.
Embodiment 1: the tamper-resistant time relay in power up:
In FIG, input voltage through rectifier bridge to anti-interference loop, when reaching after operating value and starting power require, the anti-interference actuating of relay, CPU and sampling resistor obtain electric, sampled value is delivered to CPU and is judged by sampling circuit, after magnitude of voltage meets the requirements, starts timing, time terminates rear output PWM ripple, make auxiliary relay output metal-oxide-semiconductor Q2 conducting in loop, auxiliary relay is outputed, as Fig. 2.In figure, digital 1-2 is the two ends sign of device, and numeral also illustrates the contact of relay.
Embodiment 2: the tamper-resistant time relay in dead electricity process:
In FIG, input voltage is from after rated value is reduced to 0V, if still there is the interference of 50V in scene, then anti-interference relay can not return, CPU still electric, now sampled value is continued to deliver to CPU and judges by sampling circuit, thinks that 50V magnitude of voltage is interference signal, and stopping the output of PWM ripple, relay returns.
The above is only preferred implementation of the present utility model; be noted that for those skilled in the art; under the prerequisite not departing from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (2)
1. a high accuracy tamper-resistant time relay, is characterized in that: form the time relay by high accuracy delay unit and auxiliary relay; Time relay input is provided with anti-interference input unit, voltage sampling unit, and described anti-interference input unit comprises full-wave rectification bridge, voltage stabilizing circuit, divider resistance and power resistor; Anti-interference input unit connects coil and the contact of auxiliary relay; Described voltage sampling unit comprises the circuit of three resistant series, and wherein a resistance is sampling resistor, this resistor coupled in parallel one voltage-stabiliser tube; The signal of sampling resistor exports and is connected to high accuracy delay unit.
2. high accuracy tamper-resistant time relay according to claim 1, is characterized in that: the unit of outputing of the time relay is provided with power switch pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520128855.2U CN204424169U (en) | 2015-03-05 | 2015-03-05 | A kind of high accuracy tamper-resistant time relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520128855.2U CN204424169U (en) | 2015-03-05 | 2015-03-05 | A kind of high accuracy tamper-resistant time relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204424169U true CN204424169U (en) | 2015-06-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520128855.2U Expired - Fee Related CN204424169U (en) | 2015-03-05 | 2015-03-05 | A kind of high accuracy tamper-resistant time relay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204424169U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112383295A (en) * | 2020-10-28 | 2021-02-19 | 许继集团有限公司 | Electric fast transient anti-interference enhanced outlet circuit and anti-interference method thereof |
-
2015
- 2015-03-05 CN CN201520128855.2U patent/CN204424169U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112383295A (en) * | 2020-10-28 | 2021-02-19 | 许继集团有限公司 | Electric fast transient anti-interference enhanced outlet circuit and anti-interference method thereof |
| CN112383295B (en) * | 2020-10-28 | 2024-05-10 | 许继集团有限公司 | Electric fast transient anti-interference enhanced outlet circuit and anti-interference method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150624 Termination date: 20200305 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |