CN201780930U - Control circuit structure of relay - Google Patents
Control circuit structure of relay Download PDFInfo
- Publication number
- CN201780930U CN201780930U CN2010205242841U CN201020524284U CN201780930U CN 201780930 U CN201780930 U CN 201780930U CN 2010205242841 U CN2010205242841 U CN 2010205242841U CN 201020524284 U CN201020524284 U CN 201020524284U CN 201780930 U CN201780930 U CN 201780930U
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- relay
- power
- microcontroller
- load
- wave phase
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Abstract
The utility model relates to a control circuit structure of a relay, which is characterized in that at least one threshold value for starting the relay is preset on a microcontroller, alternating-current power is input to the relay through an alternating-current power source detection unit, and alternating-current power wave phase signals are provided to the microcontroller synchronously, so that time for starting the relay can be determined; and when the relay is started, a load power wave signal detection unit provides load power wave phase signals of a load end of the relay to the microcontroller synchronously, the load power wave phase signals can be compared with the preset threshold values, and contacts of the relay can be controlled to be on or off nearby the zero potential, so that service life of the relay can be prolonged and service safety of the relay can be guaranteed.
Description
Technical field
The relevant a kind of relay tip of the utility model opens and closes Circuit Design, refers near the position conducting or close contact zero potential of a kind of automatically calibrating especially, and then prolongs relay useful life and guarantee the control relay circuit framework that relay is safe in utilization.
Background technology
" relay " is one of most basic power switch assembly in the modern system of control automatically, is widely used in Automation of Manufacturing Process device, electric system protection device, all kinds of telemechanical, remote control and the communicator.
Now for controlling the power switch that uses automatically, generally divide into the electromagnetic contactor (relay) or the semiconductor switch of electronic type (solid-state relay (SSR) or other electronic switch) of electromechanical type, generally be as everyone knows, the electromagnetic contactor or the relay of dynamo-electric pattern, for belonging to mechanical type contact kenel, more or less can produce electric arc (spark) at the contact place.
If the contact of traditional relay is in the highest position conducting of as shown in Figure 1 current potential or close; not only can give off sparks because of high potential; reduce relay and sell life; and spark that relay produced or surging; more the computer system of controlling is caused interference through regular meeting; make computer system work as machine or misoperation, use the occasion that has flammable gas or liquid at some even, and cause the danger of blast or burning.
Therefore in the streets occur a kind of for setting relay tip in the control circuit of zero potential conducting or shut-off circuit, the similar control relay circuit of commonly using mainly utilizes the function of the default delay start of microprocessor, by a voltage zero-crossing more circuit for detecting detect the voltage zero crossover point of this AC power and hand over circuit for detecting more to detect the current zero crossover point of this AC power by a current zero; Circuit for detecting and current zero are handed over after the control signal that circuit for detecting is sent more more according to this voltage zero-crossing by microprocessor, promptly in response to the phase state of this voltage and electric current, and produce a relay control signal, make the coil excitation/loss of excitation of relay, behind this coil excitation/loss of excitation, through the predetermined actuating of relay parameter time, make this relay tip closed circuit/moment of open circuit is zero moment for the magnitude of voltage of this AC power shown in Figure 2 or current value just.
The similar control relay circuit surface of commonly using seems and can solve the problem that relay gives off sparks in the high potential conducting; Yet, the reaction efficiency of relay can cause so-called action error, how many original starts that adds microprocessor has misalignment, once the relay of that more renew or different labels, situation about still having at high potential conducting shown in Figure 3 or closed relay contact takes place.
The utility model content
The technical problem that the utility model solved is promptly providing near the position conducting or close contact zero potential of a kind of automatically calibrating, and then prolongs relay useful life and guarantee the control relay circuit framework that relay is safe in utilization.
The technical solution of the utility model is: a kind of control relay circuit framework includes: a relay; One microcontroller is for default at least one threshold value in order to starting relay; One AC power ripple detecting unit is connected between AC power and this relay power end, and provides AC power wave phase signal to this microcontroller synchronously; One AC power ripple detecting unit is connected between this relay load end and the load; And by this microcontroller the AC power wave phase of this relay power end is taken a sample, for the optimum start-up opportunity of judging this relay; Simultaneously the power supply wave phase of this relay load end is taken a sample, after analyzing, compare, proofread threshold value automatically according to analysis, comparison result with the AC power wave phase of this relay power end.
Wherein, be provided with a control circuit between this microcontroller and this relay, set the correlated condition of this load action mode by this control circuit according to the purposes of load.
This microcontroller is provided with two threshold values as the interval of judging that whether this relay starts.
The beneficial effects of the utility model are: control relay circuit framework of the present utility model includes a relay, a microcontroller, an AC power ripple detecting unit, and a load power source ripple detecting unit; Wherein, the default at least one threshold value of microcontroller in order to starting relay; Make AC power via AC power ripple detecting unit input relay, and provide AC power wave phase signal to microcontroller synchronously, for the opportunity of judging starting relay.
When relay starts, synchronously microcontroller is provided the load power source wave phase signal of relay load end by load power source ripple detecting unit, for proofreading with the threshold value of original setting, with near the position conducting or close zero potential of the contact of control relay, and then can prolong relay useful life, and guarantee the safe in utilization of relay.
Description of drawings
Fig. 1 starts moment power phase figure for traditional relay.
Fig. 2 starts moment power phase figure for commonly using the desired relay of control relay circuit.
Fig. 3 is that the relay of commonly using control relay circuit reality starts moment power phase figure.
Fig. 4 is a control relay circuit framework block schematic diagram of the present utility model.
Fig. 5 is that the utility model control relay circuit framework starting relay starts moment power phase figure.
[figure number explanation]
10 relays
20 microcontrollers
30 AC power ripple detecting units
40 load power source ripple detecting units
50 AC power
60 loads
70 control circuits.
Embodiment
As shown in Figure 4, control relay circuit framework of the present utility model includes at least: a relay 10, a microcontroller 20, an AC power ripple detecting unit 30, and a load power source ripple detecting unit 40; Wherein:
This microcontroller 20 supplies default at least one threshold value in order to starting relay, and in order to the AC power wave phase of these relay 10 power ends is taken a sample, for the optimum start-up opportunity of judging this relay 10; Simultaneously the power supply wave phase of these relay 10 load ends is taken a sample, after analyzing, compare, proofread threshold value automatically according to analysis, comparison result with the AC power wave phase of these relay 10 power ends.
This AC power ripple detecting unit 30 is connected between AC power 50 and this relay 10 power ends, and provides AC power wave phase signal to this microcontroller 20 synchronously, for the opportunity of judging starting relay.
This AC power ripple detecting unit 30 is connected between these relay 10 load ends and the load 60, in order to when this relay 10 starts, provide the load power source wave phase signal of these relay 10 load ends to this microcontroller 20, proofread for this microcontroller 20 and original threshold value of setting.
When implementing, this microcontroller 20 is provided with two threshold values as the interval of judging that whether this relay 10 starts.Moreover, be provided with a control circuit 70 between this microcontroller 20 and this relay 10, set the correlated condition of these load 60 action mode according to the purposes of load 60 by this control circuit 70.
Control relay circuit framework of the present utility model is when this relay 10 starts, synchronously this microcontroller 20 is provided the load power source wave phase signal of these relay 10 load ends by this load power source ripple detecting unit 40, proofread near the position conducting or the close zero potential of showing as Fig. 5 of the contact of controlling this relay 10 for the original threshold values of setting of 20 pairs of this microcontrollers.
Especially, when the relay of changing different labels, or the module sets of this control circuit is when changing to some extent, see through control relay circuit framework of the present utility model, can be according to the action error of associated component, automatically near the contact of correcting relay position conducting or close contact zero potential, and then can prolong relay useful life, and guarantee the safe in utilization of relay.
Claims (3)
1. a control relay circuit framework is characterized in that, includes:
One relay;
One microcontroller is for default at least one threshold value in order to starting relay;
One AC power ripple detecting unit is connected between AC power and this relay power end, and provides AC power wave phase signal to this microcontroller synchronously;
One AC power ripple detecting unit is connected between this relay load end and the load; And by this microcontroller the AC power wave phase of this relay power end is taken a sample, for the optimum start-up opportunity of judging this relay; Simultaneously the power supply wave phase of this relay load end is taken a sample, after analyzing, compare, proofread threshold value automatically according to analysis, comparison result with the AC power wave phase of this relay power end.
2. control relay circuit framework as claimed in claim 1 is characterized in that, is provided with a control circuit between this microcontroller and this relay, is set the correlated condition of this load action mode according to the purposes of load by this control circuit.
3. control relay circuit framework as claimed in claim 1 or 2 is characterized in that, this microcontroller is provided with two threshold values as the interval of judging that whether this relay starts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205242841U CN201780930U (en) | 2010-09-10 | 2010-09-10 | Control circuit structure of relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205242841U CN201780930U (en) | 2010-09-10 | 2010-09-10 | Control circuit structure of relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201780930U true CN201780930U (en) | 2011-03-30 |
Family
ID=43794135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205242841U Expired - Lifetime CN201780930U (en) | 2010-09-10 | 2010-09-10 | Control circuit structure of relay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201780930U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105242728A (en) * | 2015-10-28 | 2016-01-13 | 小米科技有限责任公司 | Method and device controlling power on/off of intelligent socket, and the intelligent socket |
-
2010
- 2010-09-10 CN CN2010205242841U patent/CN201780930U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105242728A (en) * | 2015-10-28 | 2016-01-13 | 小米科技有限责任公司 | Method and device controlling power on/off of intelligent socket, and the intelligent socket |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110330 |
|
| CX01 | Expiry of patent term |