CN2287586Y - Voice type computer distance measuring and warning instrument for automobile - Google Patents

Abstract

The utility model relates to a voice type distance measuring and warning instrument with a computer for a car, which comprises ultrasonic probes and a distance nixie display. The utility model is characterized in that a host machine is composed of a single chip computer, the distance nixie display and a control panel. The single chip computer is respectively connected with a voice player, a temperature transmitter, an ultrasonic emission receiver and the probe of the ultrasonic emission receiver, wherein, the voice player is re-connected with a loudspeaker, and the temperature transmitter is connected with a temperature sensor. An integrated circuit is adopted by the utility model, elements is few, function is strong, and the probe is sealed type and has water proof and dust proof properties. Distance-measuring accuracy is enhanced by adopting a temperature measuring device and a sound speed adjusting device. Distance reporting is accurate and convenient by using voice, and car backing safety is enhanced. The voice type distance measuring and warning instrument with the computer for the car can also be used for ordinary height measurement and distance measurement for houses and fields.

Description

Speech type automobile computer range finding alarm

The utility model relates to a kind of car accessories, particularly a kind of range finding warning device that is assemblied in automobile.

Generally, during the automobile driver reversing, mainly by back mirror, situation behind the driver's cab rear window observation car, but light is bad sometimes, the rainy or night as the cloudy day, generally by rule of thumb.Some special vehiclees particularly, as container car, military-designed vehicle, full size vehicle, these vehicle rearview situations are poor, and are dangerous high during reversing, length consuming time, accident frequency height.

China utility model CN2142804Y, " before the automobile, back macrometer " discloses a kind of ultrasonic ranging that utilizes, and the device of range of a signal number.But there is following shortcoming in it:

1. the driver gets used to backsight when moveing backward, and digital the demonstration is positioned on the vehicular drive gauge panel, has no time when the driver moves backward to watch.

2. ultrasonic probe is outside open being exposed to, and running car makes the dust dirt block probe, and the water proof and dust proof poor performance influences detection accuracy and reliability.

3. acoustic velocity is influenced by ambient temperature very big, and acoustic velocity varies with temperature the end and does to revise and make observed reading generation error.

The purpose of this utility model provides a kind of language newspaper apart from reporting to the police, and range finding is accurate, and error is little, the rational a kind of speech type automobile computer range finding alarm of sonde configuration.

Realize that the technical solution of the utility model is such;

Main frame constitutes by micro controller system with apart from the nixie display control panel, micro controller system respectively with speech player, temperature transmitter, ultrasonic emitting receiver and probe thereof link to each other wherein that speech player connects loud speaker, temperature transmitter jointing temp sensor again.

Described probe is the sealed type ultrasonic transducer.

Described control panel comprises apart from nixie display, reset button, source switch and power light.

Because the utility model has adopted the computerized speech synthetic technology, reports distance with voice to the driver, report to the police, the driver only listens just passable with ear, do not influence the custom that it is observed backward.Probe adopts sealed type, has the excellent waterproof anti-dust performance, improves the reliability and the life-span of its use.While is easy to maintenance, speckles with dust as detecting head surface, wipes away with wet cloth to get final product.

The utility model adopts powerful singlechip technology, improve intelligent, can by temperature transmitter temperature be become electric weight and determine the corresponding acoustic velocity value of temperature at that time by temperature sensor survey temperature at that time, improve the accuracy rate of range finding greatly by micro controller system.

Fig. 1 the utility model structural representation.

Fig. 2 the utility model principle of work block diagram.

Fig. 3 the utility model schematic circuit diagram.

1. main frame, 2. speech player, 3. ultrasonic probe, 4. loud speaker, 5. temperature transmitter, 6. temperature sensor is 7. apart from nixie display, 8. reset button 9. source switchs, 10. power light 11, micro controller system, 12, ultrasonic emitting machine, 13, ultrasonic receiver, 14, obstacle, 15, show pushing block, 16, oscillator, 17, with door, 18, preamplifier, 19, power amplifier, 20, level Four amplifier.

Be described in detail embodiment below in conjunction with accompanying drawing:

Main frame 1 is by micro controller system with apart from nixie display 7 as shown in Figure 1, control panel constitutes, micro controller system respectively with speech player 2, temperature transmitter 5, the ultrasonic emitting receiver (12,13) and the 3 continuous wherein speech players 2 of popping one's head in thereof connect loud speaker 4, temperature transmitter 5 jointing temp sensors 6 again.Probe 3 is the sealed type ultrasonic transducer.

Control panel comprises apart from nixie display 7, reset button 8, source switch 9 and power light 10.

Main frame 1 can be installed on the automobile cab gauge panel, and speech player 2 and loud speaker 4 also are installed in the operator's compartment.Ultrasonic probe 3-1 is a transmitting probe, and 3-2 is a receiving transducer, the supporting tailstock portion that is installed on, and general dolly need be installed two cover probes, and cart need be installed three cover probes, also can install probe 3 additional at headstock if any extraordinary circumstances.Can measure front truck afterbody and Ben Che spacing.

As shown in Figure 2, fundamental diagram of the present utility model.One chip microcomputer 11 unified control co-ordinations down.After the micro controller system 11 energising initialization, regularly send a transmitter pulse signal to ultrasonic emitting machine 12, ultrasonic signal sends a ultrasonic signal through ultrasonic emitting probe 3-1 to the car rear space, meanwhile, micro controller system 11 starts the internal clocking system simultaneously, pick up counting, super sonic is advanced in air, run into obstacle 14, super sonic is reflected to super sonic receiving transducer 3-2 and amplifies through ultrasonic receiver 13, form echo pulse and send micro controller system 11 back to, micro controller system 11 stops internal clocking immediately, promptly gets the time that the super sonic round trip is propagated.Be multiplied by acoustic velocity again divided by 2, obtain the distance values of obstacle to ultrasonic probe.This distance value is delivered to loud speaker 4 through speech player 2 and is reported apart from reporting to the police to the driver, and this distance value is through showing that pushing block 15 shows on distance nixie display 7 simultaneously.In the range of a signal value simultaneously, micro controller system compares judgement, if distance is greater than 1.5 meters, speech player is only play distance value, if distance value is less than 1.5 meters, greater than 0.5 meter verbal cue " attention " after playing distance value, if distance value is less than 0.5 meter, after playing distance value, voice suggestion " is noted brake ".

The temperature of determining to record air of acoustic velocity numerical value by temperature sensor 6, through temperature transmitter 5, Temperature numerical is become the corresponding electric quantity signal cycle by micro controller system 11, obtain acoustic velocity value, enter in the range formula again and calculate corresponding to this temperature.

Fig. 3 is the utility model schematic circuit diagram, 40K oscillator 16 and power amplifier 19, constitute the ultrasonic emitting machine with door 17 and ultrasound transmitting transducer (3-1), level Four amplifier 20, preamplifier 18 and super sonic receiving transducer (3-2) constitute ultrasonic receiver, audio-frequency power amplifier 2 and loudspeaker 4 constitute language player, and temperature transmitter 5 jointing temp sensors 8 show that pushing block 15 and 4 LED displaying blocks constitute apart from nixie display 7.Among Fig. 3 super sonic sending and receiving transducer be Chinese Academy of Sciences's acoustics the 40K ultrasonic transducer of aluminum hull sealed type of development, all to adopt commercially available integrated circuit block micro controller system commonly used 11 be 8751 to circuit among the figure, equal 555 integrated packages of 40K oscillator 16 and oscillator, 4 grades of amplifiers are LM324, speech player 2 is 2 for LM386, and temperature sensor 6 is thermally dependent resistor (a MF17 type).

Circuit connecting method on the figure, end indicate all by 8751 and each integrated package common method connect.

Another embodiment of the present utility model also can be used as the altimeter apomecometer.Specific embodiments is that to change aluminum hull sealed type ultrasonic transducer into open highly sensitive ultrasonic transducer (SUK-40 type) its water proof and dust proof poor performance a little, and its measuring distance can obviously increase.External components such as circuit structure, principle of work all remain unchanged in addition, only are with ultrasonic transducer, loudspeaker and main frame merge into a single whole, and shell shape is installed on the car by being suitable for, and changes into being easy to hold use.This example can be used for measuring the height of the height of unsettled object such as street lamp, room ceiling, also can be used for measuring distance every between two electric poles in river etc., measured altitude or distance.

The utility model also can be used as apomecometer, changes the sealed type probe into open highly sensitive probe.Its measuring distance can increase greatly, can survey the height of house greater than 15 meters.

Claims (4)

1. speech type automobile computer range finding alarm, comprise ultrasonic probe, it is characterized in that apart from nixie display: main frame (1) is by micro controller system (11) with apart from nixie display (7), control panel constitutes, micro controller system (11) respectively with speech player (2), temperature transmitter (5), ultrasonic emitting receiver (12,13) and probe (3) thereof link to each other wherein, and speech player (2) connects loud speaker (4), temperature transmitter (5) jointing temp sensor (6) again.

2. according to the described a kind of speech type automobile computer range finding alarm of claim 1, it is characterized in that: described probe (3) is the sealed type ultrasonic transducer.

3. according to claim 1 or 2 described a kind of speech type automobile computer range finding alarms, it is characterized in that: described probe (3) also can adopt open highly sensitive ultrasonic transducer.

4. according to claim 1 or 2 described a kind of speech type automobile computer range finding alarms, it is characterized in that: described control panel comprises apart from nixie display (7), reset button (8), source switch (9) and power light (10).

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