CN200950230Y - Circuit for electric activator for anti-dew of circuit board - Google Patents
Circuit for electric activator for anti-dew of circuit board Download PDFInfo
- Publication number
- CN200950230Y CN200950230Y CN 200620119176 CN200620119176U CN200950230Y CN 200950230 Y CN200950230 Y CN 200950230Y CN 200620119176 CN200620119176 CN 200620119176 CN 200620119176 U CN200620119176 U CN 200620119176U CN 200950230 Y CN200950230 Y CN 200950230Y
- Authority
- CN
- China
- Prior art keywords
- phase
- relay
- motor
- controllable silicon
- circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a control circuit to prevent the circuit board condensation, which is used in the electric actuator; the utility model consists of a phase-separating resistance, a phase-separating capacitor, a relay, a controllable silicon, a temperature sensor, a photoelectric coupler, a motor and a single-chip; one end of the normally closed contact of the relay is communicated with the positively/negatively turning control end of the motor, and the other end is respectively communicated with the phase-separating resistance, the phase-separating capacitor and the output end of the controllable silicon; one end the normally opened contact of the relay is communicated with the public end of the motor M, and the other end is communicated with the joint of the phase-separating capacitor, the normally closed contact of the relay and the output end of the controllable silicon. The utility model expands the function of the phase-separating resistance in the circuit; the phase-separating resistance not only has the function of the phase separation, but also has the function of heating elements; while saving the elements, the utility model realizes the function of preventing the circuit board condensation, lowers the product cost and reduces the occupied space of the elements in the electric actuator.
Description
Technical field
The utility model relates to a kind of control circuit of electric actuator, especially a kind of circuit that prevents circuit board dewfall in the electric actuator.
Background technology
When the temperature of circuit board in the electric actuator was lower than the dewpoint temperature of working environment, the dewfall phenomenon can appear in circuit board, in case the circuit board dewfall then can cause the electric actuator operational failure, even caused the permanent damage of electric actuator.Usually the measure of taking at present is that a special-purpose electric heater is installed in electric actuator, when the motor rotation in the electric actuator, utilize the heat of motor self to make not dewfall of circuit board, when motor shuts down, by the measurement of temperature sensor, send heating instruction, the heat that utilizes special-purpose electric heater to produce to the relay that connects special-purpose electric heater by single-chip microcomputer, the circuit board temperature is in more than the dewpoint temperature of working environment, thereby avoids the circuit board dewfall.Adopt the shortcoming of this measure to be: number of elements is many, and the cost of products height does not make full use of the hardware resource of electric actuator inside.
Summary of the invention
The purpose of this utility model provides a kind of circuit that electric actuator prevents the circuit board dewfall that is used for, this circuit can be cancelled and is the special-purpose electric heater that prevents that the circuit board dewfall is provided with, and reduces circuit component, reduces cost and dwindle element in the shared space of gauge internal on the basis that guarantees heating function.
The utility model take technical scheme be: a kind ofly be used for the circuit that electric actuator prevents the circuit board dewfall, by the phase-splitting resistance R
1, split-phase capacitor C, relay J, controllable silicon D
1And D
2, temperature sensor W, photoelectrical coupler U
2, motor M and single-chip microcomputer U
1Constitute.The normally closed contact JB of relay J
1And JB
2An end and motor M just/the counter-rotating control end links to each other, the other end respectively with the phase-splitting resistance R
1, split-phase capacitor C and controllable silicon D
1And D
2Output terminal join; The normally opened contact JK of relay J
1An end link to each other the normally closed contact JB of the other end and split-phase capacitor C, relay J with the common port of motor M
2And controllable silicon D
2The Rendezvous Point of output terminal joins, photoelectrical coupler U
2Output terminal and controllable silicon D
1And D
2Control end link to each other single-chip microcomputer U
1The I/O port respectively with photoelectrical coupler U
2Input end, the control end and the temperature sensor W of relay J join the common port of motor M and controllable silicon D
1And D
2Common port be connected with power supply respectively.
The utility model has the advantages that: because the original special-purpose electric heater of using the branch phase resistance to replace, made full use of the hardware resource in the executor circuit, reduce the shared space of element, made the gauge internal structure more reasonable and simple, reduced production cost of products.
Description of drawings
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail:
As shown in Figure 1, a kind ofly be used for the circuit that electric actuator prevents the circuit board dewfall, by the phase-splitting resistance R
1, split-phase capacitor C, relay J, controllable silicon D
1And D
2, temperature sensor W, photoelectrical coupler U
2, motor M and single-chip microcomputer U
1Constitute photoelectrical coupler U
2Model be TLP521-1, single-chip microcomputer U
1Model be STC89LE58RD.The normally closed contact JB of relay J
1And JB
2An end and motor M just/the counter-rotating control end links to each other, the other end respectively with the phase-splitting resistance R
1, split-phase capacitor C and controllable silicon D
1And D
2Output terminal join.The normally opened contact JK of relay J
1An end link to each other the normally closed contact JB of the other end and split-phase capacitor C, relay J with the common port of motor M
2And controllable silicon D
2The Rendezvous Point of output terminal joins.Photoelectrical coupler U
2Output terminal and controllable silicon D
1And D
2Control end link to each other single-chip microcomputer U
1The I/O port respectively with photoelectrical coupler U
2Input end, the control end and the temperature sensor W of relay J join the common port of motor M and controllable silicon D
1And D
2Common port be connected with power supply respectively.
Principle of work of the present utility model is: the same motor self-heating that leans on prevents the circuit board dewfall when motor M turns round, when the motor stall, and single-chip microcomputer U
1Measured value pilot relay J, photoelectrical coupler U according to temperature sensor W
2And controllable silicon D
1, D
2Duty, when circuit board temperature during, make relay J cut off circuit between motor and power supply, its normally closed contact JB near the working environment dewpoint temperature
1, JB
2Disconnect normally opened contact JK
1Closure, and make controllable silicon D by photoelectrical coupler
1Conducting, D
2End, make by the phase-splitting resistance R
1The phase-splitting loop that constitutes with split-phase capacitor C powers on the phase-splitting resistance R
1Be similarly heater element, the heat that sends after powering on can make not dewfall of circuit board equally.This programme has adopted two often to open and two normally closed type relays, utilizes R
1Be well heater, saved special-purpose electric heater.In addition, phase-splitting resistance R
1With split-phase capacitor C except that the effect that forward and backward is switched, when motor rotation, also play the effect that reduces electromagnetic noise.
Claims (1)
1, a kind ofly is used for the circuit that electric actuator prevents the circuit board dewfall, by a minute phase resistance (R
1), split-phase capacitor (C), relay (J), controllable silicon (D
1, D
2), temperature sensor (W), photoelectrical coupler (U
2), motor (M) and single-chip microcomputer (U
1) constitute, it is characterized in that: the normally closed contact (JB of relay (J)
1, JB
2) an end and motor (M) just/the counter-rotating control end links to each other, the other end respectively with a minute phase resistance (R
1), split-phase capacitor (C) and controllable silicon (D
1, D
2) output terminal join; Normally opened contact (the JK of relay (J)
1) an end link to each other the normally closed contact (JB of the other end and split-phase capacitor (C), relay (J) with the common port of motor (M)
2) and controllable silicon (D
2) Rendezvous Point of output terminal joins; Photoelectrical coupler (U
2) output terminal and controllable silicon (D
1, D
2) control end link to each other single-chip microcomputer (U
1) the I/O port respectively with photoelectrical coupler (U
2) input end, the control end and the temperature sensor (W) of relay (J) join the common port of motor (M) and controllable silicon (D
1, D
2) common port be connected with power supply respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620119176 CN200950230Y (en) | 2006-08-23 | 2006-08-23 | Circuit for electric activator for anti-dew of circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620119176 CN200950230Y (en) | 2006-08-23 | 2006-08-23 | Circuit for electric activator for anti-dew of circuit board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200950230Y true CN200950230Y (en) | 2007-09-19 |
Family
ID=38892772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620119176 Expired - Fee Related CN200950230Y (en) | 2006-08-23 | 2006-08-23 | Circuit for electric activator for anti-dew of circuit board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200950230Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107741696A (en) * | 2017-11-10 | 2018-02-27 | 天津奥美自动化***有限公司 | Environment temperature adaptation control circuit and its control method for YE |
-
2006
- 2006-08-23 CN CN 200620119176 patent/CN200950230Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107741696A (en) * | 2017-11-10 | 2018-02-27 | 天津奥美自动化***有限公司 | Environment temperature adaptation control circuit and its control method for YE |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070919 Termination date: 20120823 |