阅读说明：本技术 一种智能网联汽车的安全提示电路 (Safety prompting circuit of intelligent networked automobile ) 是由 白彩盛 马晓婧 刘�英 常亮 孙怀君 张维军 张子成 魏莹 颉方正 于 2021-10-25 设计创作，主要内容包括：本发明公开了一种智能网联汽车的安全提示电路,所述提示电路包括温度转换电路、第一温度检测电路、第二温度检测电路、语音开启电路、语音关闭和指示灯电路、车速检测电路；所述温度转换电路检测发动机温度,在温度高时,第一温度检测电路和车速检测电路控制语音开启电路工作,语音开启电路进行安全播报,语音关闭和指示灯电路在一定时间后控制语不进行播报,同时指示灯亮,第二温度检测电路控制指示灯的关闭,有效的解决了现有技术中存在的在司机发现发动机高温,进行停车前,缺少安全播报装置对司机进行安全播报语音提醒,提示司机停车后要保持汽车怠速,同时缺少温度下降安全提示的装置,在温度安全后再进行汽车检查操作的问题。(The invention discloses a safety prompting circuit of an intelligent networked automobile, which comprises a temperature conversion circuit, a first temperature detection circuit, a second temperature detection circuit, a voice starting circuit, a voice closing and indicating lamp circuit and a vehicle speed detection circuit, wherein the first temperature detection circuit is connected with the second temperature detection circuit through a network; temperature converting circuit detects the engine temperature, when the temperature is high, first temperature detection circuit and speed of a motor vehicle detection circuit control pronunciation open circuit work, the pronunciation is opened the circuit and is carried out the safe report, pronunciation are closed and indicator lamp circuit control language is not reported after the definite time, the pilot lamp is bright simultaneously, the closing of second temperature detection circuit control indicator lamp, the effectual driver that exists of having solved among the prior art discovers engine high temperature, before stopping, lack the safe device of reporting and carry out the safe voice prompt of reporting to the driver, the suggestion driver will keep the car idle speed after stopping, lack the device of temperature decline safe suggestion simultaneously, carry out the problem of automobile inspection operation again after the temperature is safe.)

1. A safety prompting circuit of an intelligent internet automobile is characterized in that the prompting circuit comprises a temperature conversion circuit, a first temperature detection circuit, a second temperature detection circuit, a voice starting circuit, a voice closing and indicating lamp circuit and a vehicle speed detection circuit; the temperature conversion circuit is respectively connected with a first temperature detection circuit and a second temperature detection circuit, the first temperature detection circuit is connected with a voice starting circuit, and the voice starting circuit is respectively connected with a vehicle speed detection circuit and a voice closing and indicating lamp circuit;

the temperature conversion circuit detects the temperature of an automobile engine and outputs a temperature signal to be respectively transmitted to a first temperature detection circuit and a second temperature detection circuit, the first temperature detection circuit outputs a high-temperature signal to a voice starting circuit when the received temperature signal is greater than a temperature reference signal, the speed detection circuit detects the speed of the automobile, firstly, the speed signal is converted into a speed voltage signal, when the speed voltage signal is less than the reference speed voltage signal, a high-level deceleration signal is output to the voice starting circuit, the voice starting circuit carries out safe broadcast voice prompt after receiving the high-temperature signal and the high-level deceleration signal, and simultaneously controls the voice closing and indicating lamp circuit and the second temperature detection circuit to start working, and the voice closing and indicating lamp circuit controls the voice starting circuit not to carry out safe broadcast voice prompt after a certain time, and meanwhile, the indicator light is turned on, and the second temperature detection circuit controls the voice to be turned off and the indicator light in the indicator light circuit to be turned off after the second temperature detection circuit detects that the temperature is reduced to a certain value.

2. The safety prompting circuit of the intelligent networked automobile as claimed in claim 1, wherein the temperature conversion circuit comprises a resistor R1, one end of the resistor R1 is connected with one end of an ignition switch S1, the other end of the ignition switch S1 is connected with a power supply VCC, the other end of the resistor R1 is connected with one end of a thermistor R2, the other end of the thermistor R2 is connected with one end of a variable resistor R3, and the other end of the variable resistor R3 is connected with an adjustable end of a variable resistor R3 and connected with the ground in parallel;

the first temperature detection circuit comprises a resistor R4, one end of a resistor R4 is connected with one end of a thermistor R2 in the temperature conversion circuit, the other end of the resistor R4 is respectively connected with one end of a resistor R9 and the inverting input end of an operational amplifier AR1, one end of a resistor R5 is connected with one end of an ignition switch S1 in the temperature conversion circuit, the other end of a resistor R5 is respectively connected with one end of a resistor R7 and one end of a variable resistor R6, the other end of a variable resistor R6 is connected with the adjustable end of a variable resistor R6 and is connected with the ground, the other end of a resistor R7 is respectively connected with one end of a resistor R8 and the non-inverting input end of an operational amplifier 63AR 28, the other end of a resistor R8 is connected with the anode of a voltage regulator D3 and is connected with the ground, the output end of an operational amplifier AR1 is respectively connected with the other end of a resistor R9 and one end of a resistor R11, the other end of a resistor R11 is respectively connected with the cathode of a voltage regulator D3, one end of a resistor R12 and one end of a resistor R13, the other end of the resistor R13 is connected with the collector of the triode Q2, the other end of the resistor R12 is connected with the base of the triode Q2, the emitter of the triode Q2 is connected with one end of the resistor R14, and the other end of the resistor R14 is connected with the ground.

3. The safety prompting circuit of an intelligent networked automobile as claimed in claim 1, wherein the voice turn-on circuit comprises a resistor R15, one end of the resistor R15 is connected with the emitter of a transistor Q2 in the first temperature detection circuit, the other end of the resistor R15 is connected with the base of a transistor Q3, the emitter of a transistor Q3 is respectively connected with one end of a resistor R16 and the control electrode of a thyristor SCR1, the other end of the resistor R16 is connected with ground, the cathode of a thyristor SCR1 is connected with ground, the anode of the thyristor SCR1 is respectively connected with one end of a relay K2 and the anode of a diode D4, the other end of the relay K2 is respectively connected with the cathode of the diode D4 and one end of a normally closed contact K1-1 of a relay K1, the other end of the normally closed contact K1-1 of the relay K1 is connected with one end of an ignition switch S1 in the temperature conversion circuit, one end of a normally open contact K2-1 of the relay K2 is connected with the voice circuit power supply, the other end of the normally open contact K2-1 of the relay K2 is connected with one end of the normally closed contact K3-1 of the relay K3, and the other end of the normally closed contact K3-1 of the relay K3 is connected with the voice circuit.

4. The safety prompting circuit of the intelligent networked automobile as claimed in claim 1, wherein the vehicle speed detecting circuit comprises a resistor R21, one end of the resistor 21 is connected with a vehicle speed signal, the other end of the resistor R21 is connected with the anode of a diode D8, the cathode of a diode D9 and one end of a resistor R22 respectively, the cathode of the diode D8 is connected with one end of an ignition switch S1, a pin 9 of a chip U1, a pin 8 of the chip U1 and one end of a resistor R29 respectively, the anode of the diode D9 is connected with a power supply-VCC, the other end of the resistor R22 is connected with a non-inverting input end of an operational amplifier AR2, an inverting input end of the operational amplifier AR2 is connected with one end of a resistor R23 and one end of a resistor R24 respectively, the other end of the resistor R23 is connected with the cathode of a voltage regulator D11, one end of a capacitor C2, a pin 11 of a chip U1, a pin 12 of a chip U1 and the cathode of a capacitor C3 respectively, One end of a resistor R28 and one end of a resistor R27 are connected in parallel and grounded, the output end of an operational amplifier AR2 is respectively connected with the other end of a resistor R24 and one end of a resistor R25, the other end of a resistor R25 is respectively connected with the negative electrode of a voltage regulator tube D10 and the pin 1 of a chip U1, the positive electrode of a voltage regulator tube D10 is connected with the positive electrode of a voltage regulator tube D11, the pin 2 of a chip U1 is connected with the other end of a capacitor C2, the pin 5 of the chip U1 is respectively connected with the pin 10 of the chip U1, the other end of the resistor R1 and one end of the resistor R1, the pin 4 of the chip U1 is respectively connected with the pin 3 of the chip U1, one end of the resistor R1 and the positive electrode of the capacitor C1, the other end of the resistor R1 is connected with the other end of the resistor R1, the other end of the resistor R1 is respectively connected with one end of the variable resistor R1 and one end of the voltage regulator tube D1 and grounded, the other end of the resistor R32 is respectively connected with the other end of the resistor R33 and the non-inverting input end of the operational amplifier AR3, the other end of the resistor R31 is respectively connected with the inverting input end of the operational amplifier AR3 and one end of the resistor R34, the other end of the resistor R34 is respectively connected with one end of the resistor R35 and the output end of the operational amplifier AR3, and the other end of the resistor R35 is respectively connected with the negative electrode of the voltage regulator tube D12 and the collector electrode of the triode Q3 in the voice starting circuit; the chip U1 is a frequency-voltage conversion chip with the model number LM 2907.

5. The safety prompting circuit of the intelligent networked automobile as claimed in claim 1, wherein the second temperature detecting circuit comprises a voltage regulator tube D1, the negative electrode of the voltage regulator tube D1 is connected with one end of a normally open contact K2-4 of a relay K2, the other end of the normally open contact K2-4 of the relay K2 is connected with the other end of a resistor R4 in the first temperature detecting circuit, the positive electrode of the voltage regulator tube D1 is connected with one end of the resistor R10, the other end of the resistor R10 is connected with the base of a triode Q1, the emitter of the triode Q1 is connected with the ground, the collector of the triode Q1 is respectively connected with one end of a relay K1 and the positive electrode of a diode D2, and the other end of the relay K1 is connected with the negative electrode of a diode D2 and one end of an ignition switch S1 in the temperature conversion circuit.

6. The safety prompting circuit of an intelligent networked automobile as claimed in claim 1, wherein the voice turn-off and indication lamp circuit comprises a resistor R18, one end of the resistor R18 is connected with one end of a normally open contact K2-2 of a relay K2, the other end of a normally open contact K2-2 of a relay K2 is connected with one end of an ignition switch S1 in the temperature conversion circuit, the other end of the resistor R18 is respectively connected with one end of a resistor R17, the anode of a capacitor C1 and one end of a resistor R36, the other end of the resistor R17 is respectively connected with the cathode of a capacitor C1, one end of a resistor R19 and the emitter of a triode Q4 and is connected with ground, the other end of the resistor R36 is connected with the cathode of a voltage regulator D5, the anode of the voltage regulator D5 is connected with the control electrode of an SCR thyristor 2, the cathode of the SCR2 is respectively connected with the other end of the resistor R19 and one end of the resistor R37, and the base of the resistor R37 is connected with the base of a triode Q4, the anode of the thyristor SCR2 is connected with one end of a relay K3 and the anode of a diode D6 respectively, the other end of the relay K3 is connected with the cathode of a diode D6 and one end of a normally open contact K2-3 of a relay K2 respectively, the other end of the normally open contact K2-3 of the relay K2 is connected with one end of a resistor R20 and one end of an ignition switch S1 in a temperature conversion circuit respectively, the other end of the resistor R20 is connected with the anode of a light-emitting diode D7, and the cathode of the light-emitting diode D7 is connected with the collector of a triode Q4.

Technical Field

The invention relates to the field of automobiles, in particular to a safety prompting circuit of an intelligent networking automobile.

Background

The intelligent internet automobile is provided with advanced sensors, controllers and the like, modern communication and network technologies are fused, the intelligent internet automobile is a new generation automobile, driving safety is emphasized, at present, in the driving process of the automobile, the running of an automobile engine generates high temperature, the engine is cooled and radiated by adopting cooling liquid or circulating cooling water, a cooling fan is started and other modes generally, however, when the automobile has radiation faults, such as water pump damage, thermostat damage, non-rotation of the cooling fan, no qualified cooling liquid is used and the like, the engine cannot radiate heat normally to cause overhigh temperature, at this time, the automobile can knock, knock or boil, and after finding the phenomenon, a driver needs to stop the automobile for processing.

After a driver discovers that the temperature of an engine is too high, the driver usually needs to stop and idle, the driver is checked after the temperature is reduced to a certain degree, but a part of inexperienced drivers or experienced drivers stop and close the automobile immediately after the automobile is stopped due to negligence, the driver gets off and opens a hood of a head of the automobile to check, on one hand, the driver stops the automobile immediately at a high temperature, parts of the automobile are all in an expansion state, gaps of all accessories are small, soft metals can fall off after the automobile stops, even cylinder sticking is caused, the automobile is damaged, on the other hand, the driver is in urgent need of opening the hood of the head of the automobile when the temperature is too high, and the operation causes the possibility of burning of high-temperature steam to a human body.

The automobile safety warning device has the advantages that in the prior art, a driver finds high temperature of an engine and is lack of a safety broadcasting device to carry out safety broadcasting voice reminding on the driver before stopping, the driver is prompted to keep an automobile idling after stopping, meanwhile, a device for temperature reduction safety prompting is lacked, and automobile inspection operation is carried out after temperature safety.

The present invention therefore provides a new solution to this problem.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a safety prompting circuit of an intelligent internet automobile, which effectively solves the problems that a safety broadcasting device is lacked to carry out safety broadcasting voice prompt on a driver before the driver finds that an engine is high and stops, the driver is prompted to keep the automobile idling after stopping, a device for safely prompting temperature reduction is lacked, and automobile inspection operation is carried out after the temperature is safe in the prior art.

The technical scheme for solving the problem is that the safety prompting circuit of the intelligent networked automobile comprises a temperature conversion circuit, a first temperature detection circuit, a second temperature detection circuit, a voice starting circuit, a voice closing and indicating lamp circuit and a vehicle speed detection circuit; the temperature conversion circuit is respectively connected with a first temperature detection circuit and a second temperature detection circuit, the first temperature detection circuit is connected with a voice starting circuit, and the voice starting circuit is respectively connected with a vehicle speed detection circuit and a voice closing and indicating lamp circuit; the temperature conversion circuit detects the temperature of an automobile engine and outputs a temperature signal to be respectively transmitted to a first temperature detection circuit and a second temperature detection circuit, the first temperature detection circuit outputs a high-temperature signal to a voice starting circuit when the received temperature signal is greater than a temperature reference signal, the speed detection circuit detects the speed of the automobile, firstly, the speed signal is converted into a speed voltage signal, when the speed voltage signal is less than the reference speed voltage signal, a high-level deceleration signal is output to the voice starting circuit, the voice starting circuit carries out safe broadcast voice prompt after receiving the high-temperature signal and the high-level deceleration signal, and simultaneously controls the voice closing and indicating lamp circuit and the second temperature detection circuit to start working, and the voice closing and indicating lamp circuit controls the voice starting circuit not to carry out safe broadcast voice prompt after a certain time, meanwhile, the indicator light is on, and the second temperature detection circuit controls the voice to be turned off and the indicator light in the indicator light circuit to be turned off after the second temperature detection circuit detects that the temperature is reduced to a certain value;

the temperature conversion circuit comprises a resistor R1, one end of a resistor R1 is connected with one end of an ignition switch S1, the other end of the ignition switch S1 is connected with a power supply VCC, the other end of the resistor R1 is connected with one end of a thermistor R2, the other end of the thermistor R2 is connected with one end of a variable resistor R3, and the other end of the variable resistor R3 is connected with an adjustable end of a variable resistor R3 and connected with the ground in parallel;

the first temperature detection circuit comprises a resistor R4, one end of a resistor R4 is connected with one end of a thermistor R2 in the temperature conversion circuit, the other end of the resistor R4 is respectively connected with one end of a resistor R9 and the inverting input end of an operational amplifier AR1, one end of a resistor R5 is connected with one end of an ignition switch S1 in the temperature conversion circuit, the other end of a resistor R5 is respectively connected with one end of a resistor R7 and one end of a variable resistor R6, the other end of a variable resistor R6 is connected with the adjustable end of a variable resistor R6 and is connected with the ground, the other end of a resistor R7 is respectively connected with one end of a resistor R8 and the non-inverting input end of an operational amplifier 63AR 28, the other end of a resistor R8 is connected with the anode of a voltage regulator D3 and is connected with the ground, the output end of an operational amplifier AR1 is respectively connected with the other end of a resistor R9 and one end of a resistor R11, the other end of a resistor R11 is respectively connected with the cathode of a voltage regulator D3, one end of a resistor R12 and one end of a resistor R13, the other end of the resistor R13 is connected with the collector of the triode Q2, the other end of the resistor R12 is connected with the base of the triode Q2, the emitter of the triode Q2 is connected with one end of the resistor R14, and the other end of the resistor R14 is connected with the ground;

the voice starting circuit comprises a resistor R15, one end of the resistor R15 is connected with an emitter of a triode Q2 in the first temperature detection circuit, the other end of a resistor R15 is connected with a base of a triode Q3, emitters of a triode Q3 are respectively connected with one end of a resistor R16 and a control electrode of a thyristor SCR1, the other end of a resistor R16 is connected with the ground, a cathode of a thyristor SCR1 is connected with the ground, an anode of the thyristor SCR1 is respectively connected with one end of a relay K2 and an anode of a diode D4, the other end of a relay K2 is respectively connected with a cathode of a diode D4 and one end of a normally closed contact K1-1 of a relay K1, the other end of a normally closed contact K1-1 of the relay K1 is connected with one end of an ignition switch S1 in the temperature conversion circuit, one end of a normally open contact K2-1 of a relay K2 is connected with a voice circuit power supply, the other end of a normally open contact K2-1 of the relay K2 is connected with one end of a normally closed contact K2-1 of the relay K2, the other end of a normally closed contact K3-1 of the relay K3 is connected with a voice circuit;

the vehicle speed detection circuit comprises a resistor R21, one end of a resistor 21 is connected with a vehicle speed signal, the other end of the resistor R21 is respectively connected with the anode of a diode D8, the cathode of the diode D9 and one end of a resistor R22, the cathode of a diode D8 is respectively connected with one end of an ignition switch S1 in a temperature conversion circuit, a pin 9 of a chip U1, a pin 8 of the chip U1 and one end of a resistor R29, the anode of the diode D9 is connected with a power supply VCC, the other end of the resistor R22 is connected with the non-inverting input end of an operational amplifier AR2, the inverting input end of the operational amplifier AR2 is respectively connected with one end of a resistor R23 and one end of a resistor R24, the other end of the resistor R23 is respectively connected with the cathode of a voltage regulator D11, one end of a capacitor C2, a pin 11 of a chip U1, a pin 12 of a chip U1, the cathode of a capacitor C3, one end of a resistor R28 and one end of a resistor R27 are connected in parallel connection with the ground, and the output end of the operational amplifier AR2 is connected with the other end of the resistor R24, One end of a resistor R25, the other end of the resistor R25 is connected with the cathode of a voltage regulator tube D10 and a pin 1 of a chip U1 respectively, the anode of a voltage regulator tube D10 is connected with the anode of a voltage regulator tube D11, a pin 2 of a chip U1 is connected with the other end of a capacitor C2, a pin 5 of a chip U1 is connected with a pin 10 of a chip U1, the other end of a resistor R1 and one end of a resistor R1 respectively, a pin 4 of the chip U1 is connected with a pin 3 of the chip U1, one end of the resistor R1 and the anode of the capacitor C1 respectively, the other end of the resistor R1 is connected with the other end of the resistor R1, the other end of the resistor R1 is connected with one end of the resistor R1 and one end of a variable resistor R1 respectively, the other end of the variable resistor R1 is connected with an adjustable end of the variable resistor R1, one end of the resistor R1 and one end of an in-phase amplifier, the input end of the AR1 is connected with an input end of an inverse amplifier, and the input end of the AR1 of the amplifier, One end of a resistor R34, the other end of the resistor R34 are respectively connected with one end of a resistor R35 and the output end of an operational amplifier AR3, and the other end of the resistor R35 is respectively connected with the negative electrode of a voltage regulator tube D12 and the collector electrode of a triode Q3 in the voice starting circuit; the chip U1 is a frequency-voltage conversion chip with the model number LM 2907;

the second temperature detection circuit comprises a voltage regulator tube D1, the negative electrode of a voltage regulator tube D1 is connected with one end of a normally open contact K2-4 of a relay K2, the other end of the normally open contact K2-4 of the relay K2 is connected with the other end of a resistor R4 in the first temperature detection circuit, the positive electrode of the voltage regulator tube D1 is connected with one end of a resistor R10, the other end of the resistor R10 is connected with a base electrode of a triode Q1, an emitter electrode of the triode Q1 is connected with the ground, a collector electrode of the triode Q1 is respectively connected with one end of a relay K1 and the positive electrode of a diode D2, and the other end of the relay K1 is connected with the negative electrode of a diode D2 and one end of an ignition switch S1 in the temperature conversion circuit;

the voice turn-off and indicator light circuit comprises a resistor R18, one end of the resistor R18 is connected with one end of a normally open contact K2-2 of a relay K2, the other end of the normally open contact K2-2 of the relay K2 is connected with one end of an ignition switch S1 in the temperature conversion circuit, the other end of the resistor R18 is respectively connected with one end of a resistor R17, the anode of a capacitor C1 and one end of a resistor R36, the other end of the resistor R17 is respectively connected with the cathode of a capacitor C1, one end of a resistor R1 and the emitter of a triode Q1 and is grounded, the other end of the resistor R1 is connected with the cathode of a voltage regulator D1, the anode of the voltage regulator D1 is connected with the control electrode of a thyristor SCR1, the cathode of the thyristor SCR1 is respectively connected with the other end of the resistor R1 and one end of the resistor R1, the other end of the resistor R1 is connected with the base electrode of a triode Q1, and the anode of the SCR1 is respectively connected with one end of the anode of the relay K1 and the anode of the diode D1, One end of a normally open contact K2-3 of the relay K2 and the other end of a normally open contact K2-3 of the relay K2 are respectively connected with one end of a resistor R20 and one end of an ignition switch S1 in the temperature conversion circuit, the other end of a resistor R20 is connected with the anode of a light-emitting diode D7, and the cathode of the light-emitting diode D7 is connected with the collector of a triode Q4.

The invention has the following beneficial effects:

1. when the automobile has heat dissipation failure and the temperature of the engine is high, the temperature conversion circuit detects temperature change through a thermistor R2, output temperature signals are respectively transmitted to a first temperature detection circuit and a second temperature detection circuit, the first temperature detection circuit is used for temperature rise detection, the first temperature detection circuit outputs a high temperature signal to a voice starting circuit after the temperature of the engine is high, a vehicle speed detection circuit detects the vehicle speed, a high-level deceleration signal is output to the voice starting circuit before a driver finds high temperature and decelerates and stops the automobile, the voice starting circuit is controlled to be connected with a voice circuit power supply after receiving the high temperature signal and the high-level deceleration signal, the automobile temperature is too high, the automobile is required to stop the automobile, the idling is kept, the automobile is required to stop after a red indicating lamp is required to stop the automobile, and voice prompt of the automobile is required to be checked, the automobile is prevented from being immediately flameout at high temperature, parts of the automobile are all in an expansion state, gaps among all accessories are small, soft metals can fall off after flameout, even cylinder sticking is caused, and damage to the automobile is caused;

2. after the voice turn-on circuit broadcasts the voice for a certain time, the voice turn-on circuit is controlled not to broadcast, the safe broadcast voice prompt for a certain time already plays a role in warning and reminding, and the phenomenon that voice noise is caused to a driver due to long-time continuous broadcasting is avoided;

3. the LED D7 in the voice turn-off and indicator light circuit emits light after the voice turn-on circuit does not perform the safety broadcast voice prompt, and can select red light to represent that the temperature of the engine is high, and after the second temperature detection circuit detects that the temperature is reduced to the safety temperature, the LED D7 is not lighted to represent that a driver can safely shut down and turn on the vehicle head for inspection, and by observing the on-off of the indicator light of the application, namely the state of the LED D7, the driver can know whether the vehicle is at dangerous high temperature or at the safety temperature of the vehicle, so that the driver can easily inspect the vehicle, and the driver can easily deal with high-temperature events even if the driver is a new driver, thereby protecting the safety of the vehicle and human body and avoiding the human body from being burnt by high-temperature steam;

4. if after automobile engine high temperature, the driver does not have the timely check of parkking because of some reasons, for example the driver just waits to wait after the brief idle speed that parks of traffic lights, continue to travel again, this application when the driver carries out the operation of slowing down the parking once more, can not carry out safe report voice prompt again, avoid repeated report to cause the phenomenon of speech interference to the driver to take place, but the pilot lamp of this application can be in red light luminous state always, can not extinguish after automobile engine's temperature reduction, the driver parks the back at suitable time, only need through the bright circumstances that goes out of observation pilot lamp alright know the temperature condition of engine, after the pilot lamp goes out, the car is put out again, the inspection car, it is simple and clear, and the use is convenient.

Drawings

Fig. 1 is a schematic diagram of a temperature conversion circuit, a first temperature detection circuit, a second temperature detection circuit, a voice turn-on circuit, a voice turn-off circuit and an indicator light circuit according to the present invention.

Fig. 2 is a schematic diagram of a vehicle speed detection circuit of the present invention.

Detailed Description

The foregoing and other technical and functional aspects of the present invention will be apparent from the following detailed description of the embodiments, which proceeds with reference to the accompanying figures 1-2. The structural contents mentioned in the following embodiments are all referred to the attached drawings of the specification.

The safety prompting circuit of the intelligent networked automobile provided by the invention is described in detail through embodiments with reference to the attached drawings.

A safety prompting circuit of an intelligent internet automobile comprises a temperature conversion circuit, a first temperature detection circuit, a second temperature detection circuit, a voice starting circuit, a voice closing and indicating lamp circuit and a vehicle speed detection circuit; the temperature conversion circuit is respectively connected with a first temperature detection circuit and a second temperature detection circuit, the first temperature detection circuit is connected with a voice starting circuit, and the voice starting circuit is respectively connected with a vehicle speed detection circuit and a voice closing and indicating lamp circuit; the temperature conversion circuit detects the temperature of an automobile engine and outputs a temperature signal to be respectively transmitted to a first temperature detection circuit and a second temperature detection circuit, the first temperature detection circuit outputs a high-temperature signal to a voice starting circuit when the received temperature signal is greater than a temperature reference signal, the speed detection circuit detects the speed of the automobile, firstly, the speed signal is converted into a speed voltage signal, when the speed voltage signal is less than the reference speed voltage signal, a high-level deceleration signal is output to the voice starting circuit, the voice starting circuit carries out safe broadcast voice prompt after receiving the high-temperature signal and the high-level deceleration signal, and simultaneously controls the voice closing and indicating lamp circuit and the second temperature detection circuit to start working, and the voice closing and indicating lamp circuit controls the voice starting circuit not to carry out safe broadcast voice prompt after a certain time, and meanwhile, the indicator light is turned on, and the second temperature detection circuit controls the voice to be turned off and the indicator light in the indicator light circuit to be turned off after the second temperature detection circuit detects that the temperature is reduced to a certain value.

The temperature conversion circuit comprises a resistor R1, one end of a resistor R1 is connected with one end of an ignition switch S1, the other end of the ignition switch S1 is connected with a power supply VCC, the other end of the resistor R1 is connected with one end of a thermistor R2, the other end of the thermistor R2 is connected with one end of a variable resistor R3, and the other end of the variable resistor R3 is connected with an adjustable end of a variable resistor R3 and connected with the ground in parallel;

the working principle of the temperature conversion circuit is as follows: the thermistor R2 is a negative temperature coefficient thermistor, when the automobile ignition switch S1 is turned on, the thermistor R2 is located at a position close to an engine water tank of the automobile to detect water temperature, when the water temperature of the engine water tank is high, the resistance value of the thermistor R2 is small, otherwise, the resistance value is large, the resistor R1, the thermistor R2 and the variable resistor R3 divide voltage, and temperature signals detected and output by the temperature conversion circuit are respectively transmitted to the first temperature detection circuit and the second temperature detection circuit.

The first temperature detection circuit comprises a resistor R4, one end of a resistor R4 is connected with one end of a thermistor R2 in the temperature conversion circuit, the other end of the resistor R4 is respectively connected with one end of a resistor R9 and the inverting input end of an operational amplifier AR1, one end of a resistor R5 is connected with one end of an ignition switch S1 in the temperature conversion circuit, the other end of a resistor R5 is respectively connected with one end of a resistor R7 and one end of a variable resistor R6, the other end of a variable resistor R6 is connected with the adjustable end of a variable resistor R6 and is connected with the ground, the other end of a resistor R7 is respectively connected with one end of a resistor R8 and the non-inverting input end of an operational amplifier 63AR 28, the other end of a resistor R8 is connected with the anode of a voltage regulator D3 and is connected with the ground, the output end of an operational amplifier AR1 is respectively connected with the other end of a resistor R9 and one end of a resistor R11, the other end of a resistor R11 is respectively connected with the cathode of a voltage regulator D3, one end of a resistor R12 and one end of a resistor R13, the other end of the resistor R13 is connected with the collector of the triode Q2, the other end of the resistor R12 is connected with the base of the triode Q2, the emitter of the triode Q2 is connected with one end of the resistor R14, and the other end of the resistor R14 is connected with the ground;

the working principle of the first temperature detection circuit is as follows: the temperature signal output by the temperature conversion circuit enters the inverting input end of the operational amplifier AR1 through a resistor R4, the operational amplifier AR1 compares the temperature signal of the inverting input end with the temperature reference signal of the non-inverting input end of the operational amplifier, outputs a temperature difference signal and amplifies the temperature difference signal, when the temperature is higher than the reference value, the operational amplifier AR1 outputs a high-level temperature difference signal, the voltage stabilizing tube D3 stabilizes the temperature difference signal and limits the amplitude of the temperature difference signal, the high-level temperature difference signal enables the triode Q2 to be conducted, the emitter of the triode Q2 outputs a high-temperature signal, and the high-temperature signal is transmitted to the voice starting circuit.

The vehicle speed detection circuit comprises a resistor R21, one end of a resistor 21 is connected with a vehicle speed signal, the other end of the resistor R21 is respectively connected with the anode of a diode D8, the cathode of the diode D9 and one end of a resistor R22, the cathode of a diode D8 is respectively connected with one end of an ignition switch S1 in a temperature conversion circuit, a pin 9 of a chip U1, a pin 8 of the chip U1 and one end of a resistor R29, the anode of the diode D9 is connected with a power supply VCC, the other end of the resistor R22 is connected with the non-inverting input end of an operational amplifier AR2, the inverting input end of the operational amplifier AR2 is respectively connected with one end of a resistor R23 and one end of a resistor R24, the other end of the resistor R23 is respectively connected with the cathode of a voltage regulator D11, one end of a capacitor C2, a pin 11 of a chip U1, a pin 12 of a chip U1, the cathode of a capacitor C3, one end of a resistor R28 and one end of a resistor R27 are connected in parallel connection with the ground, and the output end of the operational amplifier AR2 is connected with the other end of the resistor R24, One end of a resistor R25, the other end of the resistor R25 is connected with the cathode of a voltage regulator tube D10 and a pin 1 of a chip U1 respectively, the anode of a voltage regulator tube D10 is connected with the anode of a voltage regulator tube D11, a pin 2 of a chip U1 is connected with the other end of a capacitor C2, a pin 5 of a chip U1 is connected with a pin 10 of a chip U1, the other end of a resistor R1 and one end of a resistor R1 respectively, a pin 4 of the chip U1 is connected with a pin 3 of the chip U1, one end of the resistor R1 and the anode of the capacitor C1 respectively, the other end of the resistor R1 is connected with the other end of the resistor R1, the other end of the resistor R1 is connected with one end of the resistor R1 and one end of a variable resistor R1 respectively, the other end of the variable resistor R1 is connected with an adjustable end of the variable resistor R1, one end of the resistor R1 and one end of an in-phase amplifier, the input end of the AR1 is connected with an input end of an inverse amplifier, and the input end of the AR1 of the amplifier, One end of a resistor R34, the other end of the resistor R34 are respectively connected with one end of a resistor R35 and the output end of an operational amplifier AR3, and the other end of the resistor R35 is respectively connected with the negative electrode of a voltage regulator tube D12 and the collector electrode of a triode Q3 in the voice starting circuit; the chip U1 is a frequency-voltage conversion chip with the model number LM 2907;

the working principle of the vehicle speed detection circuit is as follows: the current speed signal of the automobile is usually converted into a frequency pulse signal by a speed sensor, the speed of the automobile can be known by detecting the change of the frequency pulse signal, the speed detection circuit of the application is accessed into the speed signal by a resistor R21, the speed signal is usually a square wave frequency signal, the speed signal converted by the speed sensor in the prior art enters the speed detection circuit of the application, the amplitude of the speed signal is limited once by a diode D8 and a diode D9, the amplitude limited speed signal is amplified by an operational amplifier AR2, the amplified speed signal is limited twice by a stabilivolt D10 and a stabilivolt D11, the speed signal with proper amplitude is obtained and enters a chip U1, the chip U1 is a frequency-voltage conversion chip with the model of LM2907, the frequency of the speed signal is converted into voltage to be output, the size of the voltage signal output by a pin 5 of the chip U1 represents the speed of the automobile, the voltage signal which is output by a pin 5 of the chip U1 and represents the speed of the vehicle is referred to as a vehicle speed voltage signal for short, the inverting input end of the operational amplifier AR3 receives the vehicle speed voltage signal, the non-inverting input end of the operational amplifier AR3 inputs a reference vehicle speed voltage signal, when the vehicle speed voltage signal is smaller than the reference vehicle speed voltage signal, the operational amplifier AR3 outputs a high-level deceleration signal, the voltage stabilizing tube D12 stabilizes the voltage, and the vehicle speed detection circuit outputs the high-level deceleration signal to the voice starting circuit.

The voice starting circuit comprises a resistor R15, one end of the resistor R15 is connected with an emitter of a triode Q2 in the first temperature detection circuit, the other end of a resistor R15 is connected with a base of a triode Q3, emitters of a triode Q3 are respectively connected with one end of a resistor R16 and a control electrode of a thyristor SCR1, the other end of a resistor R16 is connected with the ground, a cathode of a thyristor SCR1 is connected with the ground, an anode of the thyristor SCR1 is respectively connected with one end of a relay K2 and an anode of a diode D4, the other end of a relay K2 is respectively connected with a cathode of a diode D4 and one end of a normally closed contact K1-1 of a relay K1, the other end of a normally closed contact K1-1 of the relay K1 is connected with one end of an ignition switch S1 in the temperature conversion circuit, one end of a normally open contact K2-1 of a relay K2 is connected with a voice circuit power supply, the other end of a normally open contact K2-1 of the relay K2 is connected with one end of a normally closed contact K2-1 of the relay K2, the other end of a normally closed contact K3-1 of the relay K3 is connected with a voice circuit;

the working principle of the voice starting circuit is as follows: when the temperature is high, the first temperature detection circuit outputs a high temperature signal which is transmitted to the base electrode of the triode Q3 through the resistor R15, when a driver finds that the temperature of an engine is high and decelerates, before the engine is ready to stop, a vehicle speed detection circuit outputs a high-level deceleration signal to a collector electrode of a triode Q3 in a voice starting circuit, a triode Q3 is conducted, a control electrode of a thyristor SCR1 is conducted through a trigger circuit, a relay K2 is electrified, a normally open contact K2-1 of the relay K2 is closed, a voice circuit power supply is connected with a voice circuit, the voice circuit carries out safety broadcast to send out' the car is too high in temperature, the car is required not to be immediately flamed out after the vehicle stops, the idle speed is kept, the car is required to be flamed out after a red indicator lamp is extinguished, and checking the voice prompt of the automobile, the voice circuit in the prior art can be realized by using the existing integrated circuit device, and the details about the arrangement of the voice circuit are not described here.

The voice turn-off and indicator light circuit comprises a resistor R18, one end of the resistor R18 is connected with one end of a normally open contact K2-2 of a relay K2, the other end of the normally open contact K2-2 of the relay K2 is connected with one end of an ignition switch S1 in the temperature conversion circuit, the other end of the resistor R18 is respectively connected with one end of a resistor R17, the anode of a capacitor C1 and one end of a resistor R36, the other end of the resistor R17 is respectively connected with the cathode of a capacitor C1, one end of a resistor R1 and the emitter of a triode Q1 and is grounded, the other end of the resistor R1 is connected with the cathode of a voltage regulator D1, the anode of the voltage regulator D1 is connected with the control electrode of a thyristor SCR1, the cathode of the thyristor SCR1 is respectively connected with the other end of the resistor R1 and one end of the resistor R1, the other end of the resistor R1 is connected with the base electrode of a triode Q1, and the anode of the SCR1 is respectively connected with one end of the anode of the relay K1 and the anode of the diode D1, One end of a normally open contact K2-3 of the relay K2 and the other end of a normally open contact K2-3 of the relay K2 are respectively connected with one end of a resistor R20 and one end of an ignition switch S1 in the temperature conversion circuit, the other end of the resistor R20 is connected with the anode of a light-emitting diode D7, and the cathode of the light-emitting diode D7 is connected with the collector of a triode Q4;

the working principle of the voice turn-off and indicator light prompt circuit is as follows: after the relay K2 of the voice opening circuit is powered on, the voice circuit is connected with the power supply of the voice circuit to start to safely broadcast voice prompt, meanwhile, the normally open contact K2-2 of the relay K2 is closed, the normally open contact K2-3 of the relay K2 is closed, the voice closing and indicating lamp circuit starts to work, after the normally open contact K2-2 of the relay K2 is closed, the power VCC charges the capacitor C1 through the resistor R18, the voltage regulator D5 breaks down after a certain time, the control electrode of the thyristor SCR2 obtains control voltage to be conducted, the relay K3 is electrified to control the normally closed contact K3-1 of the relay K3 in the voice starting circuit to be disconnected, the voice circuit is disconnected with the voice power circuit, and the safe broadcasting voice prompt is not carried out, meanwhile, the triode Q4 is conducted, the light-emitting diode D7 emits light, and the light-emitting diode can selectively emit red light when the temperature of the engine is too high.

The second temperature detection circuit comprises a voltage regulator tube D1, the negative electrode of a voltage regulator tube D1 is connected with one end of a normally open contact K2-4 of a relay K2, the other end of the normally open contact K2-4 of the relay K2 is connected with the other end of a resistor R4 in the first temperature detection circuit, the positive electrode of the voltage regulator tube D1 is connected with one end of a resistor R10, the other end of the resistor R10 is connected with a base electrode of a triode Q1, an emitter electrode of the triode Q1 is connected with the ground, a collector electrode of the triode Q1 is respectively connected with one end of a relay K1 and the positive electrode of a diode D2, and the other end of the relay K1 is connected with the negative electrode of a diode D2 and one end of an ignition switch S1 in the temperature conversion circuit;

the working principle of the second temperature detection circuit is as follows: after a relay K2 in the voice starting circuit is powered on, the voice circuit is connected with a voice circuit power supply to start to perform safe broadcast voice prompt, meanwhile, a normally open contact K2-4 of a relay K2 in the second temperature detection circuit is closed, the second temperature detection circuit is connected with a temperature conversion circuit to perform temperature reduction detection, after the temperature is reduced, the resistance value of a thermistor R2 in the temperature conversion circuit is large, the voltage division is large, when the temperature is reduced to a certain value to break down a voltage regulator tube D1, a triode Q1 is conducted, a relay K1 is powered on, a normally closed contact K1-1 of a relay K1 in the voice starting circuit is controlled to be disconnected, a relay K2 is not powered on, the voice is turned off, a normally open contact K2-3 of the relay K2 in the indicator light circuit is turned off, the triode Q4 is not conducted, a light emitting diode D7 is turned off, the temperature of the engine is not too high at the moment, and the temperature of the engine is reduced to a safe temperature, the driver can shut off the car and check the car.

The invention described above with reference to the accompanying drawings, when in particular use:

when an automobile runs, if the temperature of an engine of the automobile is too high due to the fact that heat cannot be dissipated normally, the temperature conversion circuit detects the temperature and outputs temperature signals to the first temperature detection circuit and the second temperature detection circuit respectively, the first temperature detection circuit belongs to temperature rise detection, the second temperature detection circuit belongs to temperature drop detection, the first temperature detection circuit compares the received temperature signals with temperature reference signals and outputs high-temperature signals to the voice starting circuit;

the speed detection circuit detects a speed signal, the amplitude of the speed signal is limited for the first time by using a diode D8 and a diode D9, the speed signal with the first amplitude limit is amplified by using an operational amplifier AR2, the amplified speed signal is subjected to the second amplitude limit by using a voltage regulator tube D10 and a voltage regulator tube D11, the purpose is to obtain a speed signal with a proper amplitude, the speed signal is processed by a chip U1, the chip U1 is a frequency-voltage conversion chip with the model of LM2907, the chip U1 outputs a voltage signal representing the speed of a vehicle, the speed voltage signal is called the speed voltage signal for short, the reverse-phase input end of the operational amplifier AR3 is used for receiving the speed voltage signal, the reference speed voltage signal is input by the non-phase input end of the operational amplifier AR3, when the vehicle speed voltage signal is smaller than the reference vehicle speed voltage signal, the operational amplifier AR3 outputs a high-level deceleration signal, the voltage stabilizing tube D12 stabilizes the voltage, and the vehicle speed detection circuit outputs the high-level deceleration signal to the voice starting circuit;

when the automobile has a heat dissipation fault and the temperature of an engine is overhigh, the first temperature detection circuit outputs a high-temperature signal to the voice starting circuit, when the temperature of the automobile is abnormally high, the automobile can knock, knock or boil, when a driver finds the phenomenon or the driver sees that a pointer is in a high-temperature area through a water temperature instrument panel, the speed of the automobile is reduced, before the automobile stops, the speed detection circuit outputs a high-level speed reduction signal to the voice starting circuit before the automobile stops, a relay K2 in the voice starting circuit is electrified, a normally open contact K2-1 of a relay K2 is closed, the voice circuit is connected with a voice circuit power supply to carry out safe broadcasting, and the voice prompt of 'the automobile is overhigh in temperature, the automobile does not need to be immediately flameout after the automobile stops, the idling is kept, the automobile is required to be flameout after a red indicator lamp is extinguished, and the automobile is checked' is provided to prompt the driver of the automobile that the temperature is high at the moment, the automobile is not required to be immediately flamed out after parking, the automobile is prevented from being immediately flamed out at high temperature, parts of the automobile are all in an expansion state, gaps among all accessories are small, and the phenomenon that some soft metals fall off or even stick to a cylinder to damage the automobile after flameout is avoided;

after a relay K2 in the voice starting circuit is powered on, namely after the voice circuit is connected with a voice circuit power supply, the voice stopping and indicating lamp circuit and the second temperature detection circuit are controlled to be started, the voice stopping and indicating lamp circuit utilizes the charging effect of a capacitor C1, after a period of time, the voice circuit in the voice starting circuit is controlled by the voice stopping and indicating lamp circuit to be disconnected with the voice circuit power supply, safe voice broadcasting is not carried out, namely, before a driver finds that the temperature is high, the speed is reduced and the vehicle stops, safe broadcasting voice prompt for a certain time is carried out, the safe broadcasting voice prompt is turned off after a certain time, the safe broadcasting voice prompt for a certain time already plays a warning and reminding role, the phenomenon that voice noise is caused to the driver by long-time broadcasting is avoided, after the safe broadcasting voice prompt is turned off, the indicating lamp light-emitting diode D7 is on at the same time, the automobile can selectively emit red light, which indicates that the temperature of the automobile is high at the moment, a driver cannot immediately flameout after the automobile is parked, and meanwhile, a hood at the head of the automobile cannot be opened in a hurry manner, so that the burn of high-temperature steam in the hood on a human body is avoided;

after a relay K2 in the voice starting circuit is powered on, a second temperature detection circuit is controlled to carry out cooling detection, after the temperature of the automobile is reduced, a relay K1 is powered on, voice closing and a light emitting diode D7 in an indicator lamp circuit are controlled to be turned off to indicate that the temperature of the automobile is reduced to a safe temperature, the automobile can be turned off at the moment, a head of the automobile is slowly opened, a small opening is firstly opened for observation and heat dissipation, and then the whole automobile is opened for inspection, so that a human body is not burnt, the water temperature of the existing water temperature instrument panel of the automobile can be displayed, the temperature of an engine with high water temperature is usually high, but a part of the existing water temperature instrument panel only displays high water temperature, medium water temperature and low water temperature, the existing water temperature instrument panel is rough, a part of the water temperature instrument panel has scales, but a driver needs to carefully check the scales to confirm the temperature, and the indicator lamp is cumbersome and inconvenient to turn off by observing the brightness of the indicator lamp, the automobile can be known to be at dangerous high temperature or at safe temperature which can be checked, the method is very simple and convenient, and the high-temperature event can be easily dealt with even a new driver by matching with the prior safe broadcasting voice prompt, so that the safety of the automobile and human bodies is protected.

The invention has the following beneficial effects:

1. when the automobile has heat dissipation failure and the engine temperature is high, the temperature conversion circuit detects temperature change through a thermistor R2, output temperature signals are respectively transmitted to a first temperature detection circuit and a second temperature detection circuit, the first temperature detection circuit is used for temperature rise detection, after the engine temperature is high, the first temperature detection circuit outputs high-temperature signals to a voice starting circuit, meanwhile, the vehicle speed detection circuit detects the vehicle speed, before a driver finds high temperature and decelerates and stops the automobile, high-level deceleration signals are output to the voice starting circuit, a triode Q3 in the voice starting circuit is conducted after receiving the high-temperature signals and the high-level deceleration signals, a thyristor SCR1 is conducted, a relay K2 is powered, the voice circuit is connected with a voice circuit power supply, the automobile temperature is too high, the automobile is required not to immediately stop the automobile after the automobile stops, the automobile is required to be stopped at idle, the red indicator lamp is required to stop the automobile, the voice prompt of the automobile is checked, so that the phenomenon that parts of the automobile are in an expansion state and the gaps of all accessories are small, soft metal falls off after flameout, even cylinder sticking and damage to the automobile are caused is avoided, the voice prompt is made before the automobile is stopped, and a driver is ready for stopping without flameout;

2. the voice turning-off and indicating lamp circuit controls the broadcasting time to be long and short by utilizing the property of charging of the capacitor C1, after the voice turning-on circuit broadcasts a certain time, the thyristor SCR2 is switched on, the relay K3 is electrified, the normally closed contact K3-1 of the relay K3 is switched off, the voice turning-on circuit is controlled not to broadcast, the voice prompt of the safe broadcasting for a certain time already plays a role in warning and reminding, and the phenomenon that the voice noise is caused to a driver due to long-time continuous broadcasting is avoided;

3. the LED D7 in the voice turn-off and indicator light circuit emits light after the voice turn-on circuit does not perform the safety broadcast voice prompt, and can select red light to represent that the temperature of the engine is high, and after the second temperature detection circuit detects that the temperature is reduced to the safety temperature, the LED D7 is not lighted to represent that a driver can safely shut down and turn on the vehicle head for inspection, and by observing the on-off of the indicator light of the application, namely the state of the LED D7, the driver can know whether the vehicle is at dangerous high temperature or at the safety temperature of the vehicle, so that the driver can easily inspect the vehicle, and the driver can easily deal with high-temperature events even if the driver is a new driver, thereby protecting the safety of the vehicle and human body and avoiding the human body from being burnt by high-temperature steam;

4. if after automobile engine high temperature, the driver does not have the timely check of parkking because of some reasons, for example the driver just waits to wait after the brief idle speed that parks of traffic lights, continue to travel again, this application when the driver carries out the operation of slowing down the parking once more, can not carry out safe report voice prompt again, avoid repeated report to cause the phenomenon of speech interference to the driver to take place, but the pilot lamp of this application can be in red light luminous state always, can not put out fire until automobile engine's temperature reduces after, the driver stops the back at suitable time, only need through the bright circumstances that goes out of observation pilot lamp alright know the temperature condition of engine, after the pilot lamp goes out, put out the car again, the inspection car, it is simple and clear, and the use is convenient.

The invention provides a safety prompting circuit of an intelligent networked automobile, which comprises a temperature conversion circuit, a first temperature detection circuit, a second temperature detection circuit, a voice starting circuit, a voice closing and indicating lamp circuit and a vehicle speed detection circuit, wherein the first temperature detection circuit is connected with the second temperature detection circuit through a network; the temperature conversion circuit is connected first temperature detection circuit respectively, second temperature detection circuit, first temperature detection circuit connects the pronunciation and opens the circuit, the pronunciation is opened the circuit and is connected speed of a motor vehicle detection circuit respectively, pronunciation are closed and the pilot lamp circuit, the effectual existence of having solved among the prior art finds engine high temperature at the driver, before stopping, lack the safety to report the device and carry out the safety to report pronunciation warning to the driver, the suggestion driver will keep the car idle speed after stopping, lack the device of temperature decline safety suggestion simultaneously, carry out the problem of automobile inspection operation again after the temperature safety.