CN203017745U - Alerter for preventing erroneous judgment of table tennis - Google Patents
Alerter for preventing erroneous judgment of table tennis Download PDFInfo
- Publication number
- CN203017745U CN203017745U CN 201220737517 CN201220737517U CN203017745U CN 203017745 U CN203017745 U CN 203017745U CN 201220737517 CN201220737517 CN 201220737517 CN 201220737517 U CN201220737517 U CN 201220737517U CN 203017745 U CN203017745 U CN 203017745U
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- net
- table tennis
- cpu
- output
- pulse counter
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Abstract
The utility model discloses an alerter for preventing erroneous judgment of table tennis. A net-touching alerter is arranged and comprises a net-touching sensor, a pulse counter, a central processing unit (CPU) and an audible and visual alarm. The net-touching sensor comprises an infrared emitting diode and an infrared receiving tube. The output terminal of the infrared receiving tube is connected with the input terminal of the pulse counter, the output terminal of the pulse counter is connected with the P1.6 terminal of the CPU and the output terminal P1.4 of the CPU is connected with the audible and visual alarm. On the basis of the touch-net sensor, the pulse counter is added. The sending of violation signals is controlled by the pulse counter, so that the erroneous judgment rate is effectively reduced. In addition, an edge ball sensor is added to judge whether edge ball of table tennis happens or not. The alerter has the advantages of simplicity in structure, low cost and convenience in installation.
Description
Technical field
The utility model relates to a kind ofly can induce automatically whether table tennis is close to or the siren of net, belongs to the athletic sports appliance technical field.
Background technology
In ping-pong contest, the sportsman the service or the air exercise in, the phenomenon that all net can occur or be close to.When the sportsman got the ball that speed is very fast, rotatory is very strong, the judge was close to or the judgement of let to this, is easy to erroneous judgement, causes injustice or infringement to the sportsman.At present, also there are some producers to utilize infrared receiver tube to produce the service touching the net siren on market, but still the disadvantage that does not have thoroughly elimination to report by mistake, trace it to its cause, be mainly because this class warning device directly utilizes infrared ray to cut off is used as signal that siren is reported to the police, and do not consider that the critical condition of net should not report to the police.In addition, this class device can only detect let, and can't provide warning to edge ball.
The utility model content
The utility model purpose is to overcome the deficiencies in the prior art, provide a kind of can measure let exactly, can measure again the prevention table tennis erroneous judgement alarm of edge ball.
Problem described in the utility model is realized by following technical scheme:
A kind of prevention table tennis erroneous judgement alarm, it is provided with a net alarm, and described net alarm comprises net inductor, pulse counter, CPU and audible-visual annunciator; Described net inductor is comprised of infrared light emitting diode, infrared receiver tube; The output of described infrared receiver tube connects the input of pulse counter, and the output of pulse counter is connected to the P1.6 end of CPU; The output P1.4 of described CPU connects audible-visual annunciator.
Above-mentioned prevention table tennis erroneous judgement alarm is set up the inductor that is close to; The described inductor that is close to is piezoelectric transducer, and its output connects the P1.7 end of CPU.
Above-mentioned prevention table tennis erroneous judgement alarm, described audible-visual annunciator comprises triode, siren, the 4th resistance and Light-Emitting Diode; Described transistor base connects the P1.4 end of CPU, grounded emitter, the input of the output connecting luminous diode of triode; The output of described Light-Emitting Diode connects the input of the 4th resistance; The output of described the 4th resistance connects the input of siren; The input of the output connecting luminous diode of described siren SPK.
Above-mentioned prevention table tennis erroneous judgement alarm, described infrared light emitting diode, infrared receiver tube are arranged on respectively on the column of net both sides.
Above-mentioned prevention table tennis erroneous judgement alarm, the piezoelectric ceramics of described piezoelectric transducer is arranged on the limit of ping-pong table surrounding.
Net inductor of the present utility model adopts infrared light emitting diode and infrared receiver tube to form, and is provided with a pulse counter, and pulse counter is set as the number of pulse in the set time, is used as whether sending the foundation of net signal.The number of pulse has been reacted the time delay that let brings because of net, to corresponding pulse number, namely reflects this delay when rolling counters forward, surpasses the delay of regulation, is considered as net, otherwise is not net.Effectively solved when the table tennis generation is critical, and the phenomenon of generation erroneous judgement.In addition, the utility model also is provided with the inductor that is close to, and when running into ball and be close to, can effectively provide prompt tone and indicator lamp, otherwise ball is not close to.It is simple in structure, simple operation, applicability are strong.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1 is the utility model circuit theory diagrams;
Fig. 2 is net sensor structure schematic diagram;
Fig. 3 is the inductor schematic diagram that is close to.
In figure, each list of reference numerals is: 1. piezoelectric ceramics, 2. table tennis net, 3. ping-pong racket table, D1. infrared light emitting diode, E. infrared receiver tube, R1 ~ R4. the first resistance ~ the 4th resistance, M. pulse counter, P. piezoelectric transducer, T. triode, D. light emitting diode, SPK. siren.
The specific embodiment
Referring to Fig. 1, the utility model net inductor adopts infrared light emitting diode D1 and infrared receiver tube E, at the output of infrared receiver tube E and the input of in succession resistance R 3 and pulse counter M, the output head grounding of resistance R 3, the P1.6 end of the output termination CPU of the M of pulse counter.Resistance R 3 is used as load, and pulse counter M is set to the time interval between pulse point in the set time, as the foundation of whether sending the net signal.Suppose, the pulse frequency of pulse counter each second is 1G, when the pulse by pulse counter surpasses 4000 pulse points, time delay (the corresponding relation between pulse and time delay that is about 0.04 second, can determine with test), can be considered net, siren is sounded, the light emitting diode bright light.Otherwise be not net, siren is not sounded, and light emitting diode is bright light not.
The utility model also is provided with the inductor that is close to, and is made of piezoelectric transducer, and its output is connected to the P1.7 end of CPU, and when table tennis was close to, siren was sounded, the light emitting diode bright light.Otherwise not for being close to, siren is not sounded, and light emitting diode is bright light not.
Audible-visual annunciator of the present utility model is comprised of triode T, siren SPK, light emitting diode D and resistance R 4.
Referring to Fig. 2, net inductor of the present utility model is divided into infrared light emitting diode D1 and infrared receiver tube E, is arranged on respectively on the column on net both sides.
Referring to Fig. 3, the inductor that is close to of the present utility model is arranged on piezoelectric ceramics on the limit of ball table surrounding.
The utility model has been set up an impulse controller M on the basis of net inductor, by pulse counter M, control the granting of signal in violation of rules and regulations, effectively reduces False Rate.In addition, the utility model has been set up the inductor that is close to, and can judge the situation whether table tennis is close to.It is simple in structure, and is with low cost, easy for installation.
Claims (5)
1. a prevention table tennis is judged alarm by accident, and it is characterized in that: it is provided with a net alarm, and described net alarm comprises net inductor, pulse counter, CPU and audible-visual annunciator; Described net inductor is comprised of infrared light emitting diode (D1), infrared receiver tube (E); The output of described infrared receiver tube (E) connects the input of pulse counter (M), and the output of pulse counter (M) is connected to the P1.6 end of CPU; The output P1.4 of described CPU connects audible-visual annunciator.
2. prevent according to claim 1 table tennis erroneous judgement alarm, it is characterized in that: set up the inductor that is close to; The described inductor that is close to is piezoelectric transducer (P), and its output connects the P1.7 end of CPU.
3. described prevention table tennis is judged alarm by accident according to claim 1 and 2, and it is characterized in that: described audible-visual annunciator comprises triode (T), siren (SPK), the 4th resistance (R4) and Light-Emitting Diode (D); Described triode (T) base stage connects the P1.4 end of CPU, grounded emitter, the input of the output connecting luminous diode (D) of triode; The output of described Light-Emitting Diode (D) connects the input of the 4th resistance (R4); The output of described the 4th resistance (R4) connects the input of siren (SPK); The input of the output connecting luminous diode (D) of described siren (SPK).
4. prevent according to claim 3 table tennis erroneous judgement alarm, it is characterized in that: described infrared light emitting diode (D1), infrared receiver tube (E) are arranged on respectively on the column of net both sides.
5. prevent according to claim 4 table tennis erroneous judgement alarm, it is characterized in that: the piezoelectric ceramics (1) of described piezoelectric transducer (P) is arranged on the limit of ping-pong table surrounding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220737517 CN203017745U (en) | 2012-12-28 | 2012-12-28 | Alerter for preventing erroneous judgment of table tennis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220737517 CN203017745U (en) | 2012-12-28 | 2012-12-28 | Alerter for preventing erroneous judgment of table tennis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203017745U true CN203017745U (en) | 2013-06-26 |
Family
ID=48641764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220737517 Expired - Lifetime CN203017745U (en) | 2012-12-28 | 2012-12-28 | Alerter for preventing erroneous judgment of table tennis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203017745U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103785160A (en) * | 2014-01-28 | 2014-05-14 | 吴光勤 | Table tennis table touching sensor and table tennis competition judgment system |
| CN104689546A (en) * | 2015-02-17 | 2015-06-10 | 李晓静 | Table tennis table capable of judging touch balls |
| CN105107171A (en) * | 2015-09-25 | 2015-12-02 | 陈志邦 | Photoelectric induction type portable badminton net |
| CN107694062A (en) * | 2017-11-03 | 2018-02-16 | 杭州乾博科技有限公司 | A kind of judgement system and method for flying over table tennis before net and whether touching net |
-
2012
- 2012-12-28 CN CN 201220737517 patent/CN203017745U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103785160A (en) * | 2014-01-28 | 2014-05-14 | 吴光勤 | Table tennis table touching sensor and table tennis competition judgment system |
| WO2015113488A1 (en) * | 2014-01-28 | 2015-08-06 | 吴光勤 | Table tennis table touch sensor and table tennis competition judging system |
| CN104689546A (en) * | 2015-02-17 | 2015-06-10 | 李晓静 | Table tennis table capable of judging touch balls |
| CN105107171A (en) * | 2015-09-25 | 2015-12-02 | 陈志邦 | Photoelectric induction type portable badminton net |
| CN107694062A (en) * | 2017-11-03 | 2018-02-16 | 杭州乾博科技有限公司 | A kind of judgement system and method for flying over table tennis before net and whether touching net |
| CN107694062B (en) * | 2017-11-03 | 2020-09-04 | 杭州乾博科技有限公司 | System and method for judging whether table tennis touches net before flying through net |
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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: 20130626 |
|
| CX01 | Expiry of patent term |