CN201397523Y

CN201397523Y - Remote control chronograph based on MCU

Info

Publication number: CN201397523Y
Application number: CN2009201203667U
Authority: CN
Inventors: 张海峰; 王敬栋; 高秀敏; 肖磊
Original assignee: Hangzhou Electronic Science and Technology University
Current assignee: Hangzhou Dianzi University; Hangzhou Electronic Science and Technology University
Priority date: 2009-05-14
Filing date: 2009-05-14
Publication date: 2010-02-03
Anticipated expiration: 2019-05-14

Abstract

The utility model relates to a remote control chronograph based on MCU. At present, a chronograph is greatly affected by human factors, and can not time accurately. The remote control chronograph based on MCU comprises a wireless transmission module, a wireless receiving module, a control module, a display module and a photoelectric detection module, wherein the wireless transmission module is embedded in a starting gun, the wireless receiving module receives signals of the wireless transmission module, the wireless receiving module is connected with the signals of the control module, the display module is connected with the signals of the control module, and the photoelectric detection module is connected with the signals of the control module. The photoelectric detection module comprisesa light transmission device and a light receiving device, the light transmission device is arranged on one side edge of each runway, and the light receiving device is arranged on the other side of each runway. Compared with the prior art, the remote control chronograph based on MCU leads timing to have a unified standard, and overcomes the defect of large artificial error when timing by hands.

Description

A kind of Remote Chronograph based on MCU

Technical field

The utility model belongs to the application electric technology field, relates in particular to a kind of time set that is applied to the track and field events aspect.

Background technology

Initial athletic meeting (comprising the Olympic Games) is because the restriction of industry and scientific technological advance all be that so not only timing uncertainty is true with manual Chronograph, and artificial influence is also big.Development along with electronics and mechanics of communication, the Olympic Games also make important progress with mutually combining of science and technology, in engineering construction, electronic equipment and communication, adopted state-of-the-art at that time technology in a large number, in the 1912 Stockholm Olympic Games, people use electronic timer and photofinish device at stadium of track and field first, and the accuracy of metering is improved greatly.Adopt bicamera to carry out photofinish in Los Angeles Olympic Games in 1932, unofficially use electric timekeeping and photofinish instrument for the first time in the Olympic Games, gymkana is provided with the giant-screen scoreboard, automatic stamper network etc. occurs.From the 1936 Berlin Olympic Games, organizing committee adopts this form of film that complete record is carried out in the Olympic Games.Olympic Games closed-circuit television is relayed and is also begun at this moment first.

At present, the Chronograph that various middle-size and small-size athletic meeting are used is that this stopwatch not only can produce very big error (especially to dash) in timing, and needs a lot of manpowers again by the manual Chronograph of judge mostly; And with advanced full-automatic photofinish time set timing, price is too expensive again, and being not suitable for this type games can use.Just need the higher Chronograph of a cost performance, the utility model has adopted the remote control technology based on MCU for this reason, has solved the problem that the like product timing error is big, cost performance is not high.The needs that meet middle-size and small-size athletic meeting fully, the utility model can be applicable to the athletic meeting timing, aspects such as industrial remote control control.

Summary of the invention

The utility model purpose is the deficiency at existing product, and a kind of remote control Chronograph based on MCU is provided, and has that timing error is little, noise resisting ability is strong, cost performance height, characteristics such as one-piece construction is simple.

The technical scheme that the utility model adopted is as follows:

Comprise wireless sending module, wireless receiving module, control module, display module and Photoelectric Detection module.Wireless sending module is embedded in the starting pistol, and wireless receiving module receives the signal of wireless sending module, and wireless receiving module is connected with the control module signal, and display module is connected with the control module signal, and the Photoelectric Detection module is connected with the control module signal.

The Photoelectric Detection module comprises light sending device and optical pickup apparatus, and light sending device is arranged on a side edge of each runway, and optical pickup apparatus is arranged on the opposite side of each runway.

Advantage of the present utility model is as follows:

(1) signal that picks up counting is as the criterion with starting pistol, makes timing that unified standard be arranged;

(2) stop timing signal and record, overcome manual timing and caused the bigger defective of artificial error by the Photoelectric Detection module;

(3) eight timing of going to of may command simultaneously;

(4) by MCU control, cost performance is higher;

(5) You Hao user interface shows runway and used time.

Description of drawings

Fig. 1 is structural representation piece figure of the present utility model.

Fig. 2 is the fundamental diagram of Photoelectric Detection module.

Embodiment

A kind of Remote Chronograph adopts a slice MSC-51 single-chip microcomputer as the microcontroller timing, and the time of record is shown by the liquid crystal display in the display module 5.Starting point is in the embedded wireless sending module 1 of starting pistol, off information sent to wireless receiving module 2 and trigger by wireless sending module 1 pick up counting, destination county uses Photoelectric Detection module 3, when the sportsman breaks through light beam that quarter, the signal that is produced by Photoelectric Detection module 3 stops control module 4 timing as look-at-me, and timing result is shown on liquid crystal display.

This utility model comprises wireless sending module, wireless receiving module, control module, display module and Photoelectric Detection module.Wireless sending module is embedded in the starting pistol, and wireless receiving module receives the signal of wireless sending module, and wireless receiving module is connected with the control module signal, and display module is connected with the control module signal, and the Photoelectric Detection module is connected with the control module signal.

Wireless sending module and wireless receiving module are formed wireless module, this wireless module is the super radio receiving transmitting module of special small size, extremely low power dissipation by Electric Power research Institute. Inc's release of Anyang new century, adopt the unique circuit structure, the SMT production technology, include amplification and rectification circuit, being output as digital signal and can directly being connected with microcontroller serial port and need not design transmission and drive, is the good radio receiving transmitting module of cost performance.Sending module includes shaping circuit, and being output as digital signal can be directly to demoder, superregenrative reception module extremely easy to use.The output signal of this module is a Transistor-Transistor Logic level, can directly be connected with the single-chip microcomputer input end.Receiver module is the regenerative detection circuit that is operated under the interrupted oscillation state, through shaping, amplification, obtains the voltage anti-phase with transmitting terminal, directly imports decoding circuit.

Microcontroller in the control module adopts AT89C51, and it is a kind of low-voltage with 4K byte flicker programmable and erasable ROM (read-only memory), the high-performance CMOS 8-bit microprocessor.Device adopts ATMEL high density nonvolatile memory manufacturing technology to make, and is compatible mutually with the MCS-51 instruction set and the output pin of industrial standard, is a kind of efficient microcontroller.The AT89C51 single-chip microcomputer provides a kind of dirigibility high and inexpensive scheme for a lot of embedded control systems.

It is the SMC1602A liquid crystal display that display module adopts model, and it adopts 16 pin interfaces of standard.Wherein: the 3rd pin VL is a liquid crystal display contrast adjustment end, and contrast is the most weak when connecing power supply, and contrast is the highest during ground connection, can produce " ghost " when contrast is too high, can adjust contrast by the rheostat of a 10K when using.The 5th pin RW is a reading writing signal line, carries out read operation during high level, carries out write operation during low level.When RS and RW can write instruction or explicit address during jointly for low level, read signal when RS is high level for low level RW is when RS can write data for high level RW during for low level.The character generation storer (CGROM) of SMC1602A liquid liquid crystal display inside has been stored 160 different dot character figures, these characters have: the capital and small letter of arabic numeral, English alphabet, conventional sign and Japanese ideogram etc., each character all has a fixing code, code such as the English alphabet of capitalizing " A " is 01000001 (41H), module is come out the dot character graphic presentation among the 41H of address during demonstration, and we just can see letter " A ".Its inner controller has 11 steering orders to come the demonstration of control character.

The Photoelectric Detection module comprises light sending device 31 and optical pickup apparatus 32, and the Photoelectric Detection module adopts the pulsed photoelectric sensor.Its principal feature is that response is fast, simple in structure, easy to use, can realize non-cpntact measurement, and higher reliability is arranged.The action principle of pulsed photoelectric sensor is that the output of photoelectric device only has two states, just " leads to " on off state with " break ", when promptly photoelectric device receives illumination, has electric signal to export; Photoelectric device is unglazed according to the time, no electric signal is exported.

Below in conjunction with accompanying drawing present embodiment is described further.

As shown in Figure 1, this Remote Chronograph comprises wireless sending module, wireless receiving module, control module, display module and Photoelectric Detection module.Wireless sending module is embedded in the starting pistol, and wireless receiving module receives the signal of wireless sending module, and wireless receiving module is connected with the control module signal, and display module is connected with the control module signal, and the Photoelectric Detection module is connected with the control module signal.Wireless sending module 1 is embedded in the starting pistol, starting pistol press send starting singal in wireless sending module signal is sent.Wireless receiving module 2 is used to receive the starting singal of wireless sending module 1, picks up counting by interrupt mode trigger control module 4 after receiving signal.

As shown in Figure 2, Photoelectric Detection module 3 comprises light sending device 31 and optical pickup apparatus 32, and light sending device 31 is arranged on a side edge of each runway, and optical pickup apparatus 32 is arranged on the opposite side of each runway 33.Photoelectric Detection module 3 is used to detect the signal that the sportsman reaches home, when the sportsman reaches home by the Photoelectric Detection module, the level signal saltus step of optical pickup apparatus 32, thereby trigger control module 4 stops timing and chronometric data is stored, and waits the sportsman of eight road runways 33 back that all puts in place to show with display module 5.Photoelectric Detection module 3 comprises light sending device 31, optical pickup apparatus 32.Photoelectric Detection module 3 adopts the pulsed photoelectric sensors, and its principal feature is, responds soon, simple in structure, easy to use, can realize non-cpntact measurement, and higher reliability is arranged.Light sending device 31 is as luminescent device, and optical pickup apparatus 32 is as optical pickup apparatus, and action principle is that the output of photoelectric device only has two states, just " leads to " on off state with " break ", when promptly photoelectric device receives illumination, has electric signal to export; Photoelectric device is unglazed according to the time, no electric signal is exported.Can come trigger control module to stop timing by the variation of output level like this.

Claims

1, a kind of Remote Chronograph based on MCU, comprise wireless sending module, wireless receiving module, control module, display module and Photoelectric Detection module, it is characterized in that: wireless sending module is embedded in the starting pistol, wireless receiving module receives the signal of wireless sending module, wireless receiving module is connected with the control module signal, display module is connected with the control module signal, and the Photoelectric Detection module is connected with the control module signal; The Photoelectric Detection module comprises light sending device and optical pickup apparatus, and light sending device is arranged on a side edge of each runway, and optical pickup apparatus is arranged on the opposite side of each runway.