CN100487474C - Automobile tyre pressure monitoring display system with exciter and its constituent part - Google Patents
Automobile tyre pressure monitoring display system with exciter and its constituent part Download PDFInfo
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- CN100487474C CN100487474C CNB2004100408040A CN200410040804A CN100487474C CN 100487474 C CN100487474 C CN 100487474C CN B2004100408040 A CNB2004100408040 A CN B2004100408040A CN 200410040804 A CN200410040804 A CN 200410040804A CN 100487474 C CN100487474 C CN 100487474C
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Abstract
The invention relates to a car tire pressure monitor display system with catalyst and its parts, which is characterized in that the system comprises a catalyst (41), a tire pressure sensing sender (42) and a signal receiving display alarm (43), wherein the catalyst (41) works when setting, it send the signal to the tire pressure sensing sender (42) and the signal receiving display alarm (43); the system also comprises a reverse radar monitoring sender (44).
Description
Technical field
The present invention relates to the monitoring automobile tyre pressure display system, be specifically related to have the monitoring automobile tyre pressure display system and the component parts thereof of driver.
Background technology
Automobile is the modern important vehicles, becomes one of key facility of family already at developed country's automobile, developing country in recent years automobile begun progressively to enter family.Along with the expansion of automobile range of application and progressively increasing of quantity, the formation of freeway net also improves day by day to the reliability of automobile, the requirement of security.The country that has makes laws, put teeth in air pressure of automobile tire monitoring (TPMS) in recent years, guarantees traffic safety.TPMS (Tire Pressure Monitoring System) is the abbreviation of monitoring tire pressure display system, it receives display alarm by tire pressure sensing transmitter and tire pressure signal and constitutes, be used for real-time measured automobiles tire pressure, and when tire pressure and temperature anomaly, report to the police automatically.Remind the driver to take corresponding measure, prevent that tyre explosion and other security incident from appearring in automobile.In the TPMS system, because the tire pressure sensing transmitter adopts wireless mode to receive display alarm to tire pressure signal and sends data, how making tire pressure signal receive display alarm identification tire pressure sensing transmitter position is that can system practical key, the position method to set up that multiple tire pressure sensing transmitter is arranged now, setting as the fixed position sign indicating number, make tire be in the setting of (the very low or air pressure change of air pressure) under the abnomal condition, these methods to set up all have some intrinsic shortcomings, sensor as fixed position sign indicating number setting can not change tire location, and the incompatibility mass is installed; The method to set up speed that changes air pressure is slower, causes other some problems easily; Many antennas receive and are provided with, and system complex is installed inconvenient.In addition, in the prior art, " tire pressure monitoring system " and " reverse sensor range surveillance " each naturally a cover independently monitor display system, tire pressure monitoring system can only be monitored the pressure data of tire, the reverse sensor range monitoring arrangement can only single monitoring automobile apart from the distance of barrier, therefore, in the prior art, should observe the pressure data of tire as the driver and when moveing backward, observe the distance of automobile again apart from barrier, just must install two and receive display, and existing tire pressure display system once can only show the pressure data of a tire, if need to observe the pressure data of other tires, and necessary manual switch, increased the personnel's that drive burden, go wrong easily, and to transmit and receive between the display be wire transmission, install and use inconvenience, only work when reversing of reverse sensor range surveillance in addition, do not work during driving, the working time, seldom most of times are set separately, and to be in the display device of idle state very uneconomical.
Summary of the invention
For solve in the existing monitoring tire pressure display system to tire pressure sensing transmitter position be provided with that inconvenience, speed are slow, signal receives the display alarm Presentation Function not comprehensively and to solve existing monitoring tire pressure display system and reverse sensor range surveillance be system independently separately, problems such as while use cost height, installation, use inconvenience, one of purpose of the present invention provides a kind of exciter part of monitoring automobile tyre pressure display system; Two of purpose of the present invention provides a kind of tire pressure sensing transmitter parts of monitoring automobile tyre pressure display system; The signal that three of purpose of the present invention provides a kind of monitoring automobile tyre pressure display system receives the display alarm parts; Four of purpose of the present invention provides a kind of monitoring automobile tyre pressure display system that is made of above-mentioned parts; This system is to the method that adopts external excitation that is provided with of tire pressure sensing transmitter, and this system monitors, shows and report to the police the distance near barrier when reversing automobile simultaneously.
The driver of monitoring automobile tyre pressure display system among the present invention comprises box body, battery, is located at 1 above the box body and button is set to 6, and its main points are:
Be provided with on the circuit board in box body:
Circuit is set, the input end external connection battery, its output terminal links to each other with the input end of inverter circuit, first microcontroller circuit; When being provided with, send signalization to first microcontroller circuit, for the input end of inverter circuit provides voltage;
First microcontroller circuit, its output terminal link to each other with the first radio-frequency transmissions circuit, the input end of discharge driving circuit, the control end of charging circuit respectively; Send the tire location coded signal to the first radio-frequency transmissions circuit, send trigger pip to charging circuit;
The output terminal of inverter circuit links to each other with the input end of charging circuit;
Second output terminal of charging circuit links to each other with the control end of inverter circuit, and first output terminal of charging circuit links to each other with the input/output terminal of capacitor C 7, discharge circuit; Capacitor C 7 is by discharge coil L1 ground connection;
The output terminal of discharge driving circuit links to each other with the control end of discharge circuit; The input/output terminal of discharge circuit links to each other with first output terminal of capacitor C 7, charging circuit;
First microcontroller circuit, the first radio-frequency transmissions circuit, discharge driving circuit are powered by power circuit, perhaps by battery by circuit supply is set.
First microcontroller circuit comprises a single-chip microcomputer.Its effect is that when circuit working was set, single-chip microcomputer received signalization, judged the position that tire is set, and produced the tire location coded signal, sent to tire pressure signal by the first radio-frequency transmissions circuit and received display alarm; When the tire location coding is sent completely, single-chip microcomputer sends trigger pip and gives the discharge driving circuit, give capacitor C 7 discharges by discharge circuit, discharge coil again, at this moment produce very big discharge pulse current on discharge coil, this electric current can produce very big electromagnetic field and make pumping signal receiving circuit work in the tire pressure sensing transmitter.
Driver of the present invention, it is provided with circuit and organizes identical circuit by 1-6 and form, the group number that circuit is set is identical with the quantity of tire pressure sensing transmitter, in the set of circuits therein, switch S 1 one ends are set to link to each other with the positive pole of battery, the resistance R 13 that the other end connects by a series connection, R17 ground connection, the positive pole of one switching diode D3 is connected on the described node that switch S 1 and resistance R 13 be set, the negative pole of described switching diode D3 connects the input end of inverter circuit, described resistance in series R13, the node of R17 is connected to the input end of first microcontroller circuit.
Driver of the present invention, in charging circuit, the positive pole of diode D2 links to each other with the output terminal of inverter circuit, the input/output terminal of one end of the negative pole of diode D2 and resistance R 6, capacitor C 7, discharge circuit links to each other, the other end of resistance R 6 links to each other with the negative pole of voltage stabilizing diode D9, D10 that a series connection is connected, and the positive pole of described voltage stabilizing diode D9, the D10 that is connected in series is by resistance R 7 ground connection; The base stage of a triode Q3 is connected on the connected node of resistance R 7 and the positive pole of voltage stabilizing diode D10, and links to each other with an output terminal of first microcontroller circuit, and the grounded emitter of described triode Q3, its collector link to each other with the control end of inverter circuit.
Driver of the present invention, in the discharge driving circuit, the base stage of triode Q2 links to each other with an output terminal of first microcontroller circuit, and the collector of described triode Q2 connects supply voltage, this supply voltage can be provided by battery, also can be provided by power circuit; Resistance R 10, R11 ground connection that the emitter of described triode Q2 connects by a series connection; The node of the described resistance R that is connected in series 10, R11 is connected to the control end of discharge circuit.
Driver of the present invention, in discharge circuit, the plus earth of controllable silicon SCR 1, controllable silicon SCR 1 anode links to each other with first output terminal, the capacitor C 7 of charging circuit, the controlled stage of described controllable silicon SCR 1 links to each other with the output terminal of discharge driving circuit, and a sustained diode 11 is connected in parallel between the anode and negative electrode of controllable silicon SCR 1.
The tire pressure sensing transmitter of monitoring automobile tyre pressure display system among the present invention, comprise housing, battery, be provided with the second radio-frequency transmissions circuit, second microcontroller circuit, pressure sensor circuit on the circuit board in housing, wherein: pressure sensor circuit is gathered the air pressure and the temperature signal of tire, sends wake-up signal to second microcontroller circuit; Second microcontroller circuit is started working after receiving the wake-up signal that pressure sensor circuit sends, read the pressure and temperature signal that pressure sensor circuit sends, and after the pressure and temperature data are handled coding, deliver to the second radio-frequency transmissions circuit and make rf modulations, and transmit to signal reception display alarm; Be characterized in: an input end of second microcontroller circuit also connects a pumping signal receiving circuit, and the pumping signal receiving circuit receives the pumping signal that driver produces, and produces trigger pulse automatically, triggers second microcontroller circuit and produces the external excitation identification code.
Tire pressure sensing transmitter of the present invention, the collector of the triode Q102 of its pumping signal receiving circuit links to each other with an input end of second microcontroller circuit, and connecing battery by resistance R 102, described triode Q102 collector is also by capacitor C 102 ground connection; The grounded emitter of described triode Q102, described triode Q102 base stage links to each other the other end ground connection of external excitation coil L101 by resistance R 105 with external excitation coil L101; Capacitor C 107 is in parallel with external excitation coil L101.
The signal of monitoring automobile tyre pressure display system receives display alarm among the present invention, comprises box body, is located at the display window above the box body, is characterized in:
Be provided with on the circuit board in box body:
Radio-frequency (RF) receiving circuit, its output terminal is connected with the input end of the 3rd microcontroller circuit, radio-frequency (RF) receiving circuit obtains coded signal, and imports the decoding of the 3rd microcontroller circuit after the radiofrequency signal demodulation of the tire pressure sensing transmitter received or the emission of radar for backing car monitoring transmitter, amplifying;
The 3rd microcontroller circuit, its first output terminal links to each other with the input end of LCD driving circuit, and signal is the multipath transmission mode;
The LCD driving circuit, its output terminal connects with LCD display, hummer respectively, and described LCD driving circuit drives the LCD display that connects with it according to the code displaying data of the 3rd microcontroller circuit that receives; Audible alarm order according to the 3rd microcontroller circuit output that receives drives the hummer that connects with it;
The second source circuit, its input end connects with vehicle-mounted accumulator jar, output terminal connects with above electrical part; Power circuit is the operating voltage that above electrical part needs with the voltage transitions of automobile accumulator jar.
The control end that signal of the present invention receives the 3rd microcontroller circuit of display alarm also connects a mode switch and selector switch.
Second output terminal that signal of the present invention receives the 3rd microcontroller circuit of display alarm also links to each other with the input end of backlight drive circuit, and the output terminal of backlight drive circuit links to each other with the LCD backlight; Backlight drive circuit drives the LCD backlight according to the signal of the 3rd microcontroller circuit output; When the LCD backlight is luminous, can strengthen the readability that LCD shows, LCD also can well be observed under the very weak condition of light.
Described the 3rd microcontroller circuit comprises a single-chip microcomputer, and model is a PIC16F series, and its effect is, with the tire pressure sensing transmitter that receives or the coded signal demodulation of radar for backing car monitoring transmitter; The respectively pressure of treatment wheel tire pressure sensing transmitter emission, temperature data or the emission of radar for backing car monitoring transmitter near the obstacle distance data; These data are made code displaying, again the code displaying data transmission is arrived the LCD driving circuit; The backlight luminescence status signal is outputed to backlight drive circuit; When reaching the thresholding of warning when air pressure and temperature and near the distance of barrier, with audible alarm order and display alarm data transmission to the LCD display driver circuit; By clicking mode switch or selector switch, can make the reception display alarm be in various states, as IC learning state, air pressure threshold value state, show state are set.Before the use, earlier tire is done location recognition study and radar for backing car is made identification learning, to strengthen anti-jamming capacity.
The LCD display of signal reception display alarm of the present invention is corresponding with the display window on being located at box body, is provided with tire location alarm lamp and gas leakage pilot lamp on LCD display, shows digital section and data area show bar.
When automobile to overtake the time, tire location alarm lamp and gas leakage pilot lamp be respectively automobile all around tire be in the indication prompting of abnormal conditions, show the digital section display automobile barometric information of tire all around, data area show bar difference display automobile is the temperature range of tire all around.When reversing automobile, display automobile rear portion right and left is near the distance of barrier respectively to show digital section, and data area show bar difference display automobile rear portion right and left is near the general situation of barrier.
Monitoring automobile tyre pressure display system with driver of the present invention, be characterized in: described system comprises that tire pressure sensing transmitter, a driver and a signal receive display alarm, keep in touch by the wireless radio transmission mode between them;
Driver is worked when being provided with, and it by the encoded position signal of high frequency to tire pressure signal reception display alarm transmitting tire pressure sensing transmitter, produces very strong pumping signal on the one hand on the other hand, makes approaching tire pressure sensing transmitter work;
The tire pressure sensing transmitter is installed in the doughnut, and it receives the high-intensity magnetic field that driver produces, and receives display alarm to tire pressure signal and transmits;
Tire pressure signal receives display alarm and is installed in the pilothouse, and it receives the signal of driver and the emission of tire pressure sensing transmitter, the pressure and temperature data of display of tyre.
Monitoring automobile tyre pressure display system of the present invention, be characterized in: this system also comprises a radar for backing car monitoring transmitter, signal receives display alarm and receives radar for backing car monitoring transmitter emitted radio signal, and display automobile is apart from the distance and the alarm of barrier when reversing;
Described radar for backing car monitoring transmitter, comprise shell, ultrasonic probe, circuit board in the enclosure is provided with: the 4th microcontroller circuit, the output terminal of its input end and amplification filtering detecting circuit links, and its output terminal selects the control end, the 24 of 1 multi-way switch circuit to select the control end of 1 multi-way switch circuit to link to each other with the take place frequently input end, the 1 on radio road of triradius respectively; The 4th microcontroller circuit receives the signal of amplification filtering detecting circuit, by comparing, calculate the minor increment of barrier and automobile; Produce the ID identification code, will output to the triradius radio road that takes place frequently behind ID sign indicating number and the minimum data coding; The 4th microcontroller circuit produces ultrasonic signal, control the 24 according to the measurement needs and select 1 multi-way switch circuit, the ultrasonic emitting signal is transferred to the ultrasonic emitting driving circuit respectively successively, can controls the 1 according to the measurement needs again and select 1 multi-way switch circuit that the ultrasound wave received signal is transferred to the amplification filtering detecting circuit; The amplification filtering detecting circuit, its input end and the 1 selects the output terminal of multi-way switch circuit to link to each other; And by the one 4 signal that selects multi-way switch circuit reception ultrasonic probe to send, and with the signal amplification of receiving, filtering interfering, and do envelope detection; The triradius radio road that takes place frequently, the triradius coded signal that the 4th microcontroller circuit that the radio road will receive sends that takes place frequently amplifies, and is transmitted to signal and receives display alarm; The one 4 selects 1 multi-way switch circuit, and its input end links to each other with ultrasonic probe, and it is according to the order of the 4th microcontroller circuit, and the signal that ultrasonic probe is sent is delivered to the input end of amplification filtering detecting circuit successively; The 24 selects 1 multi-way switch circuit, and its output terminal links to each other with the input end of ultrasonic emitting driving circuit, and according to the order of the 4th microcontroller circuit, the ultrasonic signal that the 4th microcontroller circuit is exported is sent to each ultrasonic emitting driving circuit respectively successively; The ultrasonic emitting driving circuit, be two to four groups of identical circuit, the group number of circuit is identical with the quantity of ultrasonic probe, the output terminal of described each ultrasonic emitting driving circuit all is connected with a ultrasonic probe, it selects 1 multi-way switch circuit to receive the ultrasonic signal that the 4th microcontroller circuit sends by the 24, and, drive ultrasonic probe simultaneously and send signal this signal amplification; The 3rd power circuit, the external automobile accumulator jar links to each other with above electrical part, for it provides operating voltage;
The input end of the 3rd power circuit of described radar for backing car monitoring transmitter links to each other with vehicle-mounted accumulator jar by reversing switch.
Monitoring automobile tyre pressure display system of the present invention is characterized in: the control end that described signal receives the 3rd microcontroller circuit of display alarm can also connect a mode switch and selector switch.
Monitoring automobile tyre pressure display system of the present invention, be characterized in: second output terminal that described signal receives the 3rd microcontroller circuit of display alarm also links to each other with the input end of backlight drive circuit, and the output terminal of backlight drive circuit links to each other with the LCD backlight; Backlight drive circuit drives the LCD backlight according to the signal of the 3rd microcontroller circuit output; Strengthen the readability that LCD display shows.
Monitoring automobile tyre pressure display system and component parts thereof with driver of the present invention, compare with prior art and to have the following advantages: simple to tire pressure sensing transmitter position method to set up, be provided with accurately, speed is fast, antijamming capability is strong, is specially adapted to install in batches and the tyre service use; The shared signal of radar for backing car monitoring transmitter and tire pressure sensing transmitter receives display alarm, signal receives display alarm can receive the radiofrequency signal that processing tire pressure monitor transmitter sends, can receive again and handle the radiofrequency signal that radar for backing car monitor transmitter sends, system's antijamming capability is strong, the signal transmission is reliably accurate, reduced the quantity of instrument, reduced cost, installation, easy to use; Signal receives the complete function of display alarm, height situation and definite data, the height of tire working temperature and the situation that has a flat tire that can show each tire pressure simultaneously, again can display automobile near the general situation and the definite data of obstacle, and can point out human pilot in time with the form of acousto-optic, data, simulation bar.
Description of drawings
Fig. 1 is the profile synoptic diagram of driver.
Fig. 2 is the circuit theory block diagram of driver.
Fig. 3 is the circuit diagram of driver.
Fig. 4 is the program flow chart of special software of first microcontroller circuit of packing into.
Fig. 5 is the circuit theory block diagram of tire pressure sensing transmitter.
Fig. 6 is the circuit diagram of tire pressure sensing transmitter.
Fig. 7 is the program flow chart of special software of second microcontroller circuit of packing into.
Fig. 8 is the profile synoptic diagram that signal receives display alarm.
Fig. 9 is the circuit theory block diagram that signal receives display alarm.
Figure 10 is the circuit diagram that signal receives display alarm.
Figure 11 is the main program flow block diagram of special software of the 3rd microcontroller circuit of packing into.
Figure 12 is the subroutine FB(flow block) of special software of the 3rd microcontroller circuit of packing into.
Figure 13 is the circuit theory block diagram of radar for backing car monitoring transmitter.
Figure 14 is the circuit diagram of radar for backing car monitoring transmitter.
Figure 15 is the program flow chart of special software of the 4th microcontroller circuit of packing into.
Figure 16 is a monitoring automobile tyre pressure display system pie graph.
Embodiment
Referring to Fig. 1, Fig. 2 and Fig. 3, with first microcontroller circuit 8, circuit 9, the first radio-frequency transmissions circuit 3, inverter circuit 4, charging circuit 5, discharge driving circuit 7, discharge circuit 6, capacitor C 7 are set, discharge coil L1 is installed on the circuit board; Battery 10 is linked to each other with the input end that circuit 9 is set, and the output terminal that circuit 9 is set links to each other with the input end of inverter circuit 4, first microcontroller circuit 8; The output terminal of first microcontroller circuit 8 links to each other with the input end of the first radio-frequency transmissions circuit 9, the control end of charging circuit 5, the input end of discharge driving circuit 7 respectively; The output terminal of inverter circuit 4 links to each other with the input end of charging circuit 5; Second output terminal of charging circuit 5 links to each other with the control end of inverter circuit 4, and first output terminal of charging circuit 5 links to each other with the input/output terminal of discharge circuit 6, capacitor C 7; Capacitor C 7 links to each other with discharge coil L1; The other end ground connection of discharge coil L1; The output terminal of discharge driving circuit 7 links to each other with the control end of discharge circuit 6; The input/output terminal of discharge circuit 6 links to each other with first output terminal of capacitor C 7, charging circuit 5; First microcontroller circuit 8, the first radio-frequency transmissions circuit 3, discharge driving circuit 7, are perhaps powered by power circuit 11 by circuit 9 power supplies are set by battery 10; Then, circuit board, battery 10 are located by connecting in the box body 1, and make be located at 1 above the box body to 6 buttons 2 be provided with circuit 9 that switch S 1 to S6 is set is corresponding, promptly constitute driver 41.The specific program software control of packing in the single-chip microcomputer of first microcontroller circuit 8, its program flow chart is referring to Fig. 4.
Wherein, circuit 9 is set to be organized identical circuit by 1-6 and forms, the group number that circuit is set is identical with the quantity of tire pressure sensing transmitter, in the set of circuits therein, switch S 1 one ends are set to link to each other with the positive pole of battery 10, resistance R 13, R17 ground connection that the other end connects by a series connection, the positive pole of one switching diode D3 is connected on the described node that switch S 1 and resistance R 13 be set, the negative pole of described switching diode D3 connects the input end of inverter circuit 4, and the node of described resistance in series R13, R17 is connected to the input end of first microcontroller circuit 8.
The positive pole of diode D2 in the charging circuit 5 links to each other with the output terminal of inverter circuit 4, the input/output terminal of one end of the negative pole of diode D2 and resistance R 6, capacitor C 7, discharge circuit 6 links to each other, the other end of described resistance R 6 links to each other with the negative pole of voltage stabilizing diode D9, D10 that a series connection is connected, and the positive pole of described voltage stabilizing diode D9, the D10 that is connected in series is by resistance R 7 ground connection; The base stage of a triode Q3 is connected on the connected node of resistance R 7 and the positive pole of voltage stabilizing diode D10, and link to each other with an output terminal of first microcontroller circuit 8, the grounded emitter of described triode Q3, its collector link to each other with the control end of inverter circuit 4.
The base stage of the triode Q2 of discharge driving circuit 7 links to each other with an output terminal of first microcontroller circuit 8, and the collector of described triode Q2 connects supply voltage; Supply voltage can be provided by battery 10, also can be provided by power circuit 11; Resistance R 10, R11 ground connection that the emitter of described triode Q2 connects by a series connection; The node of the described resistance R that is connected in series 10, R11 is connected to the control end of discharge circuit 6.
The plus earth of the controllable silicon SCR 1 of discharge circuit 6, controllable silicon SCR 1 anode links to each other with first output terminal, the capacitor C 7 of charging circuit 5, the controlled stage of described controllable silicon SCR 1 links to each other with the output terminal of discharge driving circuit 7, and a sustained diode 11 is connected in parallel between the anode and negative electrode of controllable silicon SCR 1.
Referring to Fig. 5 and Fig. 6, battery 17, pressure sensor circuit 13, second microcontroller circuit 15, pumping signal receiving circuit 14, the second radio-frequency transmissions circuit 16 are installed on the circuit board, and pressure sensor circuit 13 is connected with pumping signal receiving circuit 14, the second radio-frequency transmissions circuit 16 with 15 connections of second microcontroller circuit, second microcontroller circuit 15, battery 17 connects with above-mentioned electrical part; Then, circuit board is connected in the housing 12, promptly constitutes tire pressure sensing transmitter 42.And the specific program software control of in second microcontroller circuit 15, packing into, its program flow chart is referring to Fig. 7.
Wherein, the collector of the triode Q102 of pumping signal receiving circuit 14 links to each other with an input end of second microcontroller circuit 15, and connects battery 17 by resistance R 102, and the collector of described triode Q102 is also by capacitor C 102 ground connection; The grounded emitter of described triode Q102, described triode Q102 base stage links to each other the other end ground connection of external excitation coil L101 by resistance R 105 with external excitation coil L101; Capacitor C 107 is in parallel with external excitation coil L101.
Referring to Fig. 8, Fig. 9 and Figure 10, the 3rd microcontroller circuit 20, radio-frequency (RF) receiving circuit 21, LCD driving circuit 22, LCD display 23, hummer 27, second source circuit 24 are installed on the circuit board; The output terminal of radio-frequency (RF) receiving circuit 21 is connected with the input end of the 3rd microcontroller circuit 20, and first output terminal of the 3rd microcontroller circuit 20 links to each other with the input end of LCD driving circuit 22; The output terminal of LCD driving circuit 22 connects with LCD display 23, hummer 27 respectively; The control end of the 3rd microcontroller circuit 20 can also connect a mode switch 28 and selector switch 29; Second output terminal of the 3rd microcontroller circuit 20 can also link to each other with the input end of backlight drive circuit 25, and the output terminal of backlight drive circuit 25 links to each other with LCD backlight 26; With the input end of second source circuit 24 connect with vehicle-mounted accumulator jar 30, output terminal connects with above electrical part; Then, circuit board is located by connecting in the box body 18, display window 19 above LCD display 23 and the box body 18 is corresponding, and tire location alarm lamp and gas leakage pilot lamp are set on LCD display 23, show that digital section and data area show bar promptly constitute signal and receive display alarm and show device 43.Wherein, radio-frequency (RF) receiving circuit comprises a radio frequency receiving integrate circuit, and model is T5744.
The single-chip microcomputer of in the 3rd microcontroller circuit 20, packing into, model is a PIC16F series, and uses the specific program software control, its program flow chart is referring to Figure 11 and Figure 12;
Referring to Figure 13 and Figure 14, select 1 multi-way switch circuit 36, ultrasonic emitting driving circuit the 37, the 1 to select 1 multi-way switch circuit 35, amplification filtering detecting circuit 34, the 3rd power circuit 33 to be installed on the circuit board on the 4th microcontroller circuit 39, the triradius radio road the 32, the 24 that takes place frequently; And the input end of the 4th microcontroller circuit 39 and the output terminal of amplification filtering detecting circuit 34 are linked, the output terminal of the 4th microcontroller circuit 39 selects the control end, the 24 of 1 multi-way switch circuit 35 to select the control end of 1 multi-way switch circuit 36 to link to each other with the take place frequently input end, the 1 on radio road 32 of triradius respectively; The input end and the 1 of amplification filtering detecting circuit 34 selects the output terminal of multi-way switch circuit 35 to link to each other; The one 4 selects the input end of 1 multi-way switch circuit 35 to link to each other with ultrasonic probe 38, the 24 selects the output terminal of 1 multi-way switch circuit 36 to link to each other with the input end of ultrasonic emitting driving circuit 37, ultrasonic emitting driving circuit 37, be two to four groups of identical circuit, the group number of circuit is identical with the quantity of ultrasonic probe, the output terminal of ultrasonic emitting driving circuit is connected with ultrasonic probe 38, the output terminal of the 3rd power circuit 33 links to each other with above electrical part, the input end of the 3rd power circuit 33 links to each other with vehicle-mounted accumulator jar 30 by reversing switch 40, then, circuit board is connected in the shell 31, promptly constitutes radar for backing car monitoring transmitter 44.Wherein the one 4 select 1 multi-way switch circuit the 35 and the 24 to select 1 multi-way switch circuit, 36 shared integrated packages, model is a CD40 series, and the single-chip microcomputer of packing in the 4th microcontroller circuit 39, and model is a PIC16F series, and use the specific program software control, program flow chart is referring to Figure 15.
Referring to Figure 16,2 to 6 tire pressure sensing transmitters 42 are installed in respectively on the tire of 2 to 6 wheels of automobile, signal can be received display alarm 43 is installed in the pilothouse, radar for backing car monitoring transmitter 44 is installed in the place of the close automobile tail in the automobile, keeps wireless link between them.
At first, hand-held 41 pairs of tire locations of driver are provided with, and when being provided with, driver 41 near the tire pressure sensing transmitter 42 that needs to be provided with, just can be started driver work by corresponding setting key 2.Driver 41 is at first to capacitor C 7 chargings, after charging is finished, driver 41 receives the encoded position signal of display alarm 43 transmitting tire pressure sensing transmitters on the one hand to signal by the first radio-frequency transmissions circuit 3, driver 41 triggers capacitor C 7 discharges on the other hand, produce strong-electromagnetic field, make the work that is triggered of approaching tire pressure sensing transmitter 42, tire pressure sensing transmitter 42 can receive the identification code signal that display alarm 43 send this machine to signal at once.From now on when tire pressure sensing transmitter 42 emission air pressure and temperature data, all can at first launch the pressure and temperature signal that this machine identification code signal is launched this machine again, signal receives the position that display alarm 43 just can correctly be concluded tire pressure sensing transmitter 41 places of these data of emission.
For example, with driver 41 close the near front wheels, by the near front wheel on the driver button 2 is set, driver at first receives display alarm to tire pressure signal and sends the near front wheel coded signal, after tire pressure signal reception display alarm is received the near front wheel coded signal, change the external excitation set handling immediately over to, after driver has been launched the near front wheel coded signal, to tire pressure sensing transmitter emission low-frequency excitation signal, after the tire pressure sensing transmitter is received the low-frequency excitation signal, receive display alarm to tire pressure signal and send this machine identification code, this identification code is identical with the identification code signal that sends the preceding transmission of pressure and temperature data, after the tire pressure sensing transmitter was received the identification code signal that sensor sends, the position that just can confirm this sensor was the near front wheel.After, after tire pressure signal reception display alarm was received this identification code signal again, the data after this identification code of decidable were pressure and temperature data of the near front wheel.After tire pressure sensing transmitter position is provided with and finishes, when being provided with, finish the setting of tire hyperbar and infrabar alarming threshold value, from now on only otherwise change tire location, do not need to be provided with again.
Automobile is to overtake the time, and radar for backing car monitoring transmitter is not worked.It is in running order to 6 tire pressure sensing transmitters 42 to be installed in 2 on the automotive wheel, and pressure sensor circuit 13 is gathered the air pressure and the temperature signal of tire, sends wake-up signal to second microcontroller circuit 15; Second microcontroller circuit 15 is started working after receiving the wake-up signal that pressure sensor circuit 13 sends, read the pressure and temperature signal that pressure sensor circuit 13 sends, and after the pressure and temperature data are handled coding, deliver to the second radio-frequency transmissions circuit 16 and make rf modulations, receive display alarm 43 to signal and transmit; Signal shows and warning after receiving display alarm 43 received signals, wherein, tire location alarm lamp and gas leakage pilot lamp be respectively automobile all around tire be in the indication prompting of abnormal conditions, show the digital section display automobile barometric information of tire all around, data area show bar difference display automobile is the temperature range of tire all around.Human pilot can be known the pressure and temperature of each tire at any time.
When reversing automobile, reversing switch 40 is connected, the 3rd power circuit 33 of radar for backing car monitoring transmitter 44 is connected automobile storage battery 30, radar for backing car monitoring transmitter 44 is promptly started working, send ultrasonic signal by the 4th microcontroller circuit 39, select 1 multi-way switch circuit 36 that ultrasonic signal is transferred to ultrasonic emitting driving circuit 37 respectively successively through the 24, ultrasonic emitting driving circuit 37 is amplified after receiving ultrasonic signal, be transferred to ultrasonic probe 38 emission ultrasonic signals, and receive the ultrasonic signal that returns; The ultrasonic signal that returns selects 1 multi-way switch circuit 35 to be transferred to amplification filtering detecting circuit 34 through the 1; The signal that amplification filtering detecting circuit 34 is received ultrasonic probe 38 amplifies, filtering interfering, and do to be transferred to the 4th microcontroller circuit 39 after the envelope detection; After the 4th microcontroller circuit 39 receives the echoed signal of amplification filtering detecting circuit 34, by echoed signal with the time-delay between transmitting, calculate the distance of automobile,, be transferred to the triradius radio road 32 that takes place frequently behind the coding through relatively obtaining minimum obstacle distance data near barrier; The triradius radio road 32 that takes place frequently receives the coded signal of the 4th microcontroller circuit 39 modulation back display alarm 43 to signal and transmits by the triradius radio road 32 that takes place frequently, signal shows and warning after receiving display alarm 43 received signals, wherein, display automobile rear portion right and left is near the distance of barrier respectively to show digital section, and data area show bar difference display automobile rear portion right and left is near the general situation of barrier.Human pilot can receive the distance that display alarm is known automobile and barrier by signal, carries out emergency processing.
Claims (8)
1, a kind of tire pressure sensing transmitter (42) of monitoring automobile tyre pressure display system, comprise housing (12), battery (17), be provided with pressure sensor circuit (13), second microcontroller circuit (15), the second radio-frequency transmissions circuit (16) on the circuit board in housing, wherein:
Pressure sensor circuit (13) is gathered the air pressure and the temperature signal of tire, sends wake-up signal to second microcontroller circuit (15);
Second microcontroller circuit (15) is started working after receiving the wake-up signal that pressure sensor circuit (13) sends, read the pressure and temperature signal that pressure sensor circuit (13) sends, and after the pressure and temperature data are handled coding, deliver to the second radio-frequency transmissions circuit 16 and make rf modulations, and transmit to signal reception display alarm (43);
It is characterized in that: an input end of second microcontroller circuit (15) also connects a pumping signal receiving circuit (14), pumping signal receiving circuit (14) receives the pumping signal that driver (41) produces, automatically produce trigger pulse, trigger second microcontroller circuit (15) and produce the external excitation identification code.
2, tire pressure sensing transmitter according to claim 1, it is characterized in that: the collector of the triode Q102 of pumping signal receiving circuit (14) links to each other with an input end of second microcontroller circuit (15), and connecing battery (17) by resistance R 102, the collector of described triode Q102 is also by capacitor C 102 ground connection; The grounded emitter of described triode Q102, described triode Q102 base stage links to each other the other end ground connection of external excitation coil L101 by resistance R 105 with external excitation coil L101; Capacitor C 107 is in parallel with external excitation coil L101.
3, a kind of signal of monitoring automobile tyre pressure display system receives display alarm (43), comprises box body (18), is located at the display window (19) above the box body, it is characterized in that, is provided with on the circuit board in box body:
Radio-frequency (RF) receiving circuit (21), its output terminal is connected with the input end of the 3rd microcontroller circuit (20); Radio-frequency (RF) receiving circuit (21) obtains coded signal and imports the 3rd microcontroller circuit (20) decoding after the radiofrequency signal demodulation of the tire pressure sensing transmitter (42) received or radar for backing car monitoring transmitter (44) emission, amplifying;
The 3rd microcontroller circuit (20), its first output terminal links to each other with the input end of LCD driving circuit (22), and signal is the multipath transmission mode;
LCD driving circuit (22), its output terminal connect with LCD display (23), hummer (27) respectively; Described LCD driving circuit (22) drives the LCD display (23) that connects with it according to the code displaying data of the 3rd microcontroller circuit (20) that receives; Audible alarm order according to the 3rd microcontroller circuit output that receives drives the hummer (27) that connects with it;
Second source circuit (24), its input end connects with vehicle-mounted accumulator jar (30), output terminal connects with above electrical part.
4, signal according to claim 3 receives display alarm, it is characterized in that the control end of described the 3rd microcontroller circuit (20) also connects a mode switch (28) and selector switch (29).
5, receive display alarm according to claim 3 or 4 described signals, it is characterized in that, second output terminal of described the 3rd microcontroller circuit (20) also links to each other with the input end of backlight drive circuit (25), and the output terminal of backlight drive circuit (25) links to each other with LCD backlight (26); Backlight drive circuit drives the LCD backlight according to the signal of the 3rd microcontroller circuit (20) output.
6, a kind of monitoring automobile tyre pressure display system, it is characterized in that: described system includes the described signal of driver (41), the described tire pressure sensing transmitter of claim 1 (42) and claim 3 and receives display alarm (43), keeps in touch by the wireless radio transmission mode between them;
Driver (41) is worked when being provided with, it receives the encoded position signal of display alarm (43) transmitting tire pressure sensing transmitter on the one hand to signal by high frequency, produce very strong pumping signal on the other hand, make approaching tire pressure sensing transmitter (42) work;
Tire pressure sensing transmitter (42) is installed in the doughnut, and it receives the high-intensity magnetic field that driver (41) produces, and receives display alarm (43) to signal and transmits;
Signal receives display alarm (43) and is installed in the pilothouse, and it receives the signal of driver (41) and tire pressure sensing transmitter (42) emission, the pressure and temperature data of display of tyre.
7, monitoring automobile tyre pressure display system according to claim 6, it is characterized in that: this system also comprises radar for backing car monitoring transmitter (44), signal receives display alarm (43) and receives radar for backing car monitoring transmitter (44) emitted radio signal, and display automobile is apart from the distance and the alarm of barrier when reversing.
Described radar for backing car monitoring transmitter (44) comprises shell (31), ultrasonic probe (38), and circuit board in the enclosure is provided with:
The 4th microcontroller circuit (39), the output terminal of its input end and amplification filtering detecting circuit (34) links, and its output terminal selects the control end, the 24 of 1 multi-way switch circuit (35) to select the control end of 1 multi-way switch circuit (36) to link to each other with the take place frequently input end, the 1 on radio road (32) of triradius respectively; The 4th microcontroller circuit receives the signal of amplification filtering detecting circuit, by relatively, calculate the minor increment of barrier and automobile, output to the triradius radio road (32) that takes place frequently behind the coding; The 4th microcontroller circuit produces ultrasonic signal, and controls the 24 and select 1 multi-way switch circuit, the 1 to select the duty of 1 multi-way switch circuit;
Amplification filtering detecting circuit (34), its input end and the 1 select the output terminal of 1 multi-way switch circuit (35) to link to each other; Described amplification filtering detecting circuit (34) selects 1 multi-way switch circuit (35) to receive the signal that ultrasonic probe (38) sends by the 1, and the signal of receiving is amplified, filtering interfering, and do envelope detection;
The triradius radio road (32) that takes place frequently, the coded signal that the 4th microcontroller circuit (39) that receives is sent amplifies, emission;
The one 4 selects 1 multi-way switch circuit (35), and its input end links to each other with ultrasonic probe (38), and it is according to the order of the 4th microcontroller circuit, and the signal that ultrasonic probe is sent is delivered to the input end of amplification filtering detecting circuit (34) successively;
The 24 selects 1 multi-way switch circuit (36), its output terminal links to each other with the input end of ultrasonic emitting driving circuit (37), according to the order of the 4th microcontroller circuit (39), the ultrasonic signal that the 4th microcontroller circuit is exported is sent to each ultrasonic emitting driving circuit (37) respectively successively;
Ultrasonic emitting driving circuit (37), be two to four groups of identical circuit, the output terminal of its each ultrasonic emitting driving circuit (37) all is connected with a ultrasonic probe (38), and it amplifies the ultrasonic signal that receives, and drives ultrasonic probe (38) simultaneously and sends signal;
The 3rd power circuit (33) by reversing switch (40) external automobile accumulator jar (30), and links to each other with above electrical part, for it provides operating voltage.
8, according to claim 6 or 7 described monitoring automobile tyre pressure display systems, it is characterized in that:
Second output terminal that described signal receives the 3rd microcontroller circuit (20) of display alarm (43) also links to each other with the input end of backlight drive circuit (25), and the output terminal of backlight drive circuit (25) links to each other with LCD backlight (26); Backlight drive circuit drives the LCD backlight according to the signal of the 3rd microcontroller circuit (20) output; Strengthen the readability that LCD display shows.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100408040A CN100487474C (en) | 2004-09-30 | 2004-09-30 | Automobile tyre pressure monitoring display system with exciter and its constituent part |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2004100408040A CN100487474C (en) | 2004-09-30 | 2004-09-30 | Automobile tyre pressure monitoring display system with exciter and its constituent part |
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| Publication Number | Publication Date |
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| CN1755382A CN1755382A (en) | 2006-04-05 |
| CN100487474C true CN100487474C (en) | 2009-05-13 |
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| CNB2004100408040A Expired - Fee Related CN100487474C (en) | 2004-09-30 | 2004-09-30 | Automobile tyre pressure monitoring display system with exciter and its constituent part |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1141613A (en) * | 1994-02-22 | 1997-01-29 | 计算机方法公司 | Active intergrated circuit transponder and sensor apparatus for transmitting vehicle tire parameter data |
| EP1026015A2 (en) * | 1999-02-05 | 2000-08-09 | Schrader-Bridgeport International, Inc | Method and apparatus for a remote tire pressure monitoring system |
| CN2504108Y (en) * | 2001-11-16 | 2002-08-07 | 高伟一 | Microcomputerized automotive tyre pressure monitor |
| US6518876B1 (en) * | 2000-04-25 | 2003-02-11 | Schrader-Bridgeport International, Inc. | Determination of wheel sensor position using radio frequency detectors in an automotive remote tire monitor system |
| JP2003165317A (en) * | 2001-12-03 | 2003-06-10 | Nissan Motor Co Ltd | Tire air pressure monitoring device |
| CN2589237Y (en) * | 2002-12-30 | 2003-12-03 | 王风华 | Motor vehicle tire automatic monitoring alarm |
| CN1496867A (en) * | 2002-09-24 | 2004-05-19 | 株式会社电装 | Pressure monitoring system |
| CN1502488A (en) * | 2002-07-31 | 2004-06-09 | ��ʽ�����װ | Tyre pressure monitor, intelligent control system and sensor, and registering method and system |
| FR2852556A3 (en) * | 2003-03-18 | 2004-09-24 | Whetron Ind Co Ltd | Car tire pressure and temperature sensing device, has pressure and temperature sensor supplied with power in capacitor, and microprocessor activating alarm to inform driver for stopping car if sensed value exceeds standard value |
| CN2725907Y (en) * | 2004-09-27 | 2005-09-14 | 重庆三信电子有限公司 | Automobile tyre pressure monitoring display system with exciter and its structural member |
-
2004
- 2004-09-30 CN CNB2004100408040A patent/CN100487474C/en not_active Expired - Fee Related
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1141613A (en) * | 1994-02-22 | 1997-01-29 | 计算机方法公司 | Active intergrated circuit transponder and sensor apparatus for transmitting vehicle tire parameter data |
| EP1026015A2 (en) * | 1999-02-05 | 2000-08-09 | Schrader-Bridgeport International, Inc | Method and apparatus for a remote tire pressure monitoring system |
| US6518876B1 (en) * | 2000-04-25 | 2003-02-11 | Schrader-Bridgeport International, Inc. | Determination of wheel sensor position using radio frequency detectors in an automotive remote tire monitor system |
| CN2504108Y (en) * | 2001-11-16 | 2002-08-07 | 高伟一 | Microcomputerized automotive tyre pressure monitor |
| JP2003165317A (en) * | 2001-12-03 | 2003-06-10 | Nissan Motor Co Ltd | Tire air pressure monitoring device |
| CN1502488A (en) * | 2002-07-31 | 2004-06-09 | ��ʽ�����װ | Tyre pressure monitor, intelligent control system and sensor, and registering method and system |
| CN1496867A (en) * | 2002-09-24 | 2004-05-19 | 株式会社电装 | Pressure monitoring system |
| CN2589237Y (en) * | 2002-12-30 | 2003-12-03 | 王风华 | Motor vehicle tire automatic monitoring alarm |
| FR2852556A3 (en) * | 2003-03-18 | 2004-09-24 | Whetron Ind Co Ltd | Car tire pressure and temperature sensing device, has pressure and temperature sensor supplied with power in capacitor, and microprocessor activating alarm to inform driver for stopping car if sensed value exceeds standard value |
| CN2725907Y (en) * | 2004-09-27 | 2005-09-14 | 重庆三信电子有限公司 | Automobile tyre pressure monitoring display system with exciter and its structural member |
Non-Patent Citations (2)
| Title |
|---|
| 轮胎压力监测系统设计及实现. 李文印，周斌，佟志臣.汽车技术，第2期. 2004 |
| 轮胎压力监测系统设计及实现. 李文印，周斌，佟志臣.汽车技术，第2期. 2004 * |
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| CN1755382A (en) | 2006-04-05 |
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