CN202966243U - Automatic windshield wiper control system - Google Patents
Automatic windshield wiper control system Download PDFInfo
- Publication number
- CN202966243U CN202966243U CN 201220480475 CN201220480475U CN202966243U CN 202966243 U CN202966243 U CN 202966243U CN 201220480475 CN201220480475 CN 201220480475 CN 201220480475 U CN201220480475 U CN 201220480475U CN 202966243 U CN202966243 U CN 202966243U
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- control module
- windshield wiper
- control system
- module
- sight glass
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Abstract
The utility model discloses an automatic windshield wiper control system. The automatic windshield wiper control system comprises a sensing module, a control module and a windshield wiper motor, wherein the sensing module is connected with the control module and is used for monitoring window glass and sending monitoring data to the control module; the control module is used for receiving the monitoring data sent by the sensing module, analyzing the monitoring data to judge the cleanness degree of the window glass and sending a command to the windshield wiper motor; and the windshield wiper motor is connected with the control module and is used for driving a windshield wiper to swing according to the command of the control module. The automatic windshield wiper control system, provided by the utility model, overcomes the defect that in the prior art, manpower and labor hours are consumed when the window glass is manually observed by a worker at regular time and cleaning of the windshield wiper is controlled, solves the problem that the judging capability of human eyes is limited by various conditions, and can effectively clean the window glass in time to ensure the clearness of a monitored video image.
Description
Technical field
The utility model relates to the security protection field of video monitoring, especially a kind of automatic windshield wiper control system.
Background technology
Along with the fast development of science and technology, the various aspects during Video Supervision Technique has been applied to live, work by people more and more widely.Outdoor, the video front watch-dog generally need to be installed protective cover, and protective cover is used for guaranteeing the normal operation of internal control device, its function be prevent dust, waterproof and moistureproof etc.Be the needs of camera acquisition video image, all be provided with the sight glass of printing opacity on protective cover, the clean-up performance of sight glass has directly affected the effect that camera video image gathers.Present common way is rain brush to be installed clean sight glass on protective cover, determines the clean-up performance of sight glass by monitor staff's observation, uses control convenience (supervisory keyboard) to control the switch of rain brush.Because the needs monitor staff carries out artificial regularly observation window glass and controls rain brush and clean, in the more place of video front-end equipment, that must be a larger work capacity, need to expend a large amount of human costs and time cost; And also there is more influence factor in the resolving ability of human eye, as the eyesight height, daytime on night and fine day cloudy day etc., will cause like this not enough or not thorough of sight glass cleaning.
The utility model content
The purpose of this utility model is to overcome defective of the prior art, and providing a kind of can monitor the cleanliness level of video front watch-dog sight glass automatically, and can automatically control the automatic windshield wiper control system that rain brush cleans sight glass.
For addressing the above problem, a kind of automatic windshield wiper control system of the present utility model comprises:
Induction module is connected with control module, is used for sight glass is monitored, and monitoring data is sent to control module;
Control module is used for receiving the monitoring data that induction module sends, and monitoring data is analyzed, the clean-up performance of judgement sight glass, and send instruction to Wiper motor;
Wiper motor is connected with control module, is used for swinging according to the order-driven rain brush of control module.
Described induction module is opto-electronic pickup.
Described opto-electronic pickup comprises LED projector, LED receptor and LED drive circuit, and described LED drive circuit is connected with control module; Described LED receptor is connected with signal processing module; Described signal processing module is connected with control module.
Described signal processing module comprises successively the I-V change-over circuit that is connected, and follows, amplifying circuit, bandwidth-limited circuit and clamping circuit.
Described control module comprises record cell, is used for recording the number of times of rain brush cleaning in a period of time, and the backhaul quantity of the interior rain brush of single cleaning.
Described control module comprises timing unit, is used for fixed-time control unlatching opto-electronic pickup sight glass is monitored.
Adopt the automatic windshield wiper control system of the utility model structure, can monitor sight glass by induction module at any time, when having the spot such as rain, snow, dust when sight glass, control module is controlled the Wiper motor operation, and sight glass is cleaned.Automatic windshield wiper control system of the present utility model, when having avoided carrying out artificial regularly observation window glass and control rain brush cleaning by the staff in prior art, the defective in labor intensive and man-hour, the resolving ability that has solved simultaneously human eye is subjected to the problem of various condition restriction, can clean sight glass timely and effectively, guarantee the visibility of monitor video image.
Description of drawings
Fig. 1 is the structured flowchart of the automatic windshield wiper control system of the utility model.
Fig. 2 is the principle schematic of the automatic windshield wiper control system of the utility model.
Fig. 3 is a kind of working condition chart of the automatic windshield wiper control system of the utility model.
Fig. 4 is the principle schematic of automatic another embodiment of windshield wiper control system of the utility model.
In figure: 1, camera lens; 2, sight glass; 3, LED light; 4, resistance light object
The specific embodiment
In order to make those skilled in the art person understand better technical solutions of the utility model, the utility model is described in further detail below in conjunction with drawings and embodiments.
As shown in Figure 1, 2, a kind of automatic windshield wiper control system of the present utility model comprises: opto-electronic pickup, control module, signal processing module and Wiper motor.
Described opto-electronic pickup is connected with control module, is used for sight glass is monitored, and monitoring data is sent to control module; Described opto-electronic pickup comprises LED projector, LED receptor and LED drive circuit, and described LED drive circuit is connected with control module; Described LED receptor is connected with signal processing module; Described signal processing module is connected with control module.The LED light that the pulse-width modulation waveform PWM driving LED projector that LED drive circuit is sent by described control module was modulated in sight glass one end emission, the LED receptor receives the LED light of launching and converts current signal at the other end of sight glass, sends to described signal processing module.
Described signal processing module comprises successively the I-V change-over circuit that is connected, and follows, amplifying circuit, bandwidth-limited circuit and clamping circuit.
Control module is used for receiving the monitoring data that opto-electronic pickup sends, and monitoring data is analyzed, the clean-up performance of judgement sight glass, and send instruction to Wiper motor.
Wiper motor is connected with control module, is used for swinging according to the order-driven rain brush of control module.
Control module sends pulse-width modulation waveform PWM to the LED drive circuit of opto-electronic pickup, and the LED light that LED drive circuit was modulated in sight glass one end emission by PWM driving LED projector covers on the outside face of sight glass LED light.
The LED receptor receives the LED light that launches and converts current signal at the sight glass other end, send to the I-V change-over circuit of signal processing module, successively by the I-V change-over circuit and follow, amplifying circuit changes and amplifies to strengthen power-handling capability, then order by bandpass filtering and clamping circuit remove disturb and clamper after send to control module.
Control module comprises record cell and timing unit, the signal judgement sight glass outside face clean-up performance that control module is sent according to signal processing module, control the switch of Wiper motor, and the backhaul quantity of regulating rain brush in rain brush speed and single cleaning by the number of times of recording unit records rain brush cleaning in a period of time of establishing in it, but the work of timing unit fixed-time control LED projector and LED receptor.
principle: optically, LED light has the straight line transitivity in uniform dielectric, the LED light that the LED projector of sight glass one end emits passes through and covers the sight glass outside face, if sight glass outside face cleanliness level is higher, the LED light big city that emits passes the other end that the sight glass outside face is delivered to sight glass and is received by the LED receptor, if sight glass outside face cleanliness level is lower, the straight line transmission of the LED light of emission can be obstructed, be that LED light can be changed light path or absorption by resistance light object in transmittance process, the LED receptor of the other end will receive a small amount of or not receive the LED light that launches like this, can judge sight glass outside face clean-up performance by emission and the residual quantity that receives LED light, and control rain brush and clean.
Implementation process: when pick up camera gathers video image with visible light, LED projector and LED receiver operation, when detection sight glass outside face clean-up performance is low, control module drives rain brush work, and at the rain brush working stage, LED projector and LED receptor quit work, the transmission of avoiding rain brush to affect LED light causes wrong diagnosis, until rain brush is got back on original position through a backhaul, LED projector and LED receptor reopen, and are more than a cleaning of rain brush.
In addition, after rain brush quits work, LED projector and LED receptor work on, detect sight glass outside face clean-up performance, and feedback control module controls rain brush and whether opens again, if cleanliness level reaches standard, the cleaning of sight glass outside face finishes, can not be up to standard as clean-up performance, carry out cleaning for the second time, the like.
In addition, when working in the rainy day, rain brush can carry out repeatedly cleaning.As rain brush within a period of time continuously the cleaning number of times more than 5 times (containing 5 times), at this moment record cell will record the backhaul quantity (being 1 to n as each cleaning backhaul quantity) that these data and drive control module improve the work speed of rain brush or increase rain brush in a cleaning, or increase simultaneously speed and the backhaul quantity of rain brush, until reaching the standard rear windscreen wiper, the clean-up performance of sight glass quits work, the record cell zero clearing in control module.
In addition, when pick up camera gathers video image by black light, as night, because LED light can exert an influence to the camera acquisition video image, therefore this device carries out time opening by the timing unit in control module to LED projector and LED receptor, adopt batch (-type) to detect the method for sight glass outside face clean-up performance, purpose is when guaranteeing the sight glass cleaning, reduces LED light to the impact of video image as far as possible.
As shown in Figures 2 and 3, sight glass 2 is rectangle, and in its four end faces, any two corresponding end faces are placed LED projector and LED receptor, and LED light 3 reticulates to intersect and covers on rectangle sight glass 2.Three resistance light objects 4 shown in Figure 3 have been blocked the reception of LED light 3.
As shown in Figure 4, a kind of automatic rain brush embodiment that is sight glass 2 when circular arranges two groups of corresponding circular arc LED projectors and LED receptor on the circumference of circular sight glass, and LED light 3 reticulates to intersect and covers on circular sight glass 2.
Claims (6)
1. an automatic windshield wiper control system, is characterized in that, comprising:
Induction module is connected with control module, is used for sight glass is monitored, and monitoring data is sent to control module;
Control module is used for receiving the monitoring data that induction module sends, and monitoring data is analyzed, the clean-up performance of judgement sight glass, and send instruction to Wiper motor;
Wiper motor is connected with control module, is used for swinging according to the order-driven rain brush of control module.
2. automatic windshield wiper control system as claimed in claim 1, it is characterized in that: described induction module is opto-electronic pickup.
3. automatic windshield wiper control system as claimed in claim 2, it is characterized in that: described opto-electronic pickup comprises LED projector, LED receptor and LED drive circuit, described LED drive circuit is connected with control module; Described LED receptor is connected with signal processing module; Described signal processing module is connected with control module.
4. automatic windshield wiper control system as claimed in claim 3, it is characterized in that: described signal processing module comprises the I-V change-over circuit that is connected successively, follows, amplifying circuit, bandwidth-limited circuit and clamping circuit.
5. automatic windshield wiper control system as claimed in claim 4, it is characterized in that: described control module comprises record cell, is used for recording the number of times of rain brush cleaning in a period of time, and the backhaul quantity of rain brush in the single cleaning.
6. automatic windshield wiper control system as claimed in claim 5, it is characterized in that: described control module comprises timing unit, is used for fixed-time control and opens opto-electronic pickup sight glass is monitored.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220480475 CN202966243U (en) | 2012-09-18 | 2012-09-18 | Automatic windshield wiper control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220480475 CN202966243U (en) | 2012-09-18 | 2012-09-18 | Automatic windshield wiper control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202966243U true CN202966243U (en) | 2013-06-05 |
Family
ID=48507358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220480475 Expired - Fee Related CN202966243U (en) | 2012-09-18 | 2012-09-18 | Automatic windshield wiper control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202966243U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110868512A (en) * | 2018-08-28 | 2020-03-06 | 杭州海康威视数字技术股份有限公司 | Camera with windshield wiper |
-
2012
- 2012-09-18 CN CN 201220480475 patent/CN202966243U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110868512A (en) * | 2018-08-28 | 2020-03-06 | 杭州海康威视数字技术股份有限公司 | Camera with windshield wiper |
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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: 20130605 Termination date: 20150918 |
|
| EXPY | Termination of patent right or utility model |