CN1227802A - Radio tyre-pressure detector - Google Patents
Radio tyre-pressure detector Download PDFInfo
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- CN1227802A CN1227802A CN 98106063 CN98106063A CN1227802A CN 1227802 A CN1227802 A CN 1227802A CN 98106063 CN98106063 CN 98106063 CN 98106063 A CN98106063 A CN 98106063A CN 1227802 A CN1227802 A CN 1227802A
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Abstract
A wireless tyre pressure detector has several tyre pressure detecting and transmitting units arranged to car tyre, in which there are a power supply unit and a pressure detecting unit. Said power supply unit is composed of a vibratory electric generating device and a rectifier. Said electric generating device has a piezoelectric element on elastic piece and a weight at one end of elastic piece. The vibration of elastic piece make the piezoelectric element generate electric current. The pressure detecting unit senses tyre pressure and uses pneumatic element to change the position of magnetic rod and vary the inductance value of induction coil. After processed by microprocessor, a signal representing tyre pressure is output.
Description
The present invention relates to a kind of tire pressure detector, relate in particular to and a kind ofly have and can generate electricity voluntarily, but and short distance reception show the wireless tire pressure detector of tire pressure situation.
The tire pressure detector device mainly is mounted on the motor tire, with the tire pressure value that detects tire whether in normal scope, it comprises a transmission circuit and an acceptor circuit, this transmission circuit is arranged in the tire pressure detector, and this acceptor circuit is configurable on Automobile instrument, so that with observation, when the pressure of tire value that this tire pressure detector measures non-in normal range, just the tire pressure value is crossed when high or low, this transmission circuit can be sent with radio signal, and receive and pick out the source of radio signal by this acceptor circuit, and demonstrate or can give the alarm in good time, steerman just can know it is that the tire pressure of that tire or that tire is too high or too low actually.Acceptor circuit in the past is to be configured in the vehicle, so, required power supply is to use automobile power source during this acceptor circuit running, and this transmission circuit is arranged in this tire pressure detector and then is installed on the tire, so required power supply is to use the battery pack that is installed in this tire pressure detector during the transmission circuit running.
So, when battery power exhausts, the battery that must will more renew, just can make the transmission circuit normal operation of this tire pressure detector, to bring into play its due function, therefore, increased the expense expenditure of navigating mate, and, the inconvenience that is caused when changing battery pack increased.
The object of the present invention is to provide a kind of wireless tire pressure detector, it can avoid changing battery pack and can continue the supply power supply, thereby can reach power saving, easy-to-use effect.
Another object of the present invention is to provide a kind of wireless tire pressure detector, it can closely be launched, receive, with the interference of reduction signal transmission, and the degree of stability that can provide signal to transmit.
The object of the present invention is achieved like this:
A kind of wireless tire pressure detector, comprise allly can be installed in tire pressure detection emitter on the tire respectively, at least one is corresponding with this tire pressure detection emitter and can be installed in tire pressure receptor on the car body, an and control unit, this tire pressure detection emitter has a housing, be provided with a power subsystem unit, a pressure-sensing unit and a transmission circuit in this housing, be characterized in:
Described power subsystem unit comprises a vibration generating device and a rectifying circuit;
Described vibration generating device is provided with a piezoelectric element, a shell fragment and a pouring weight, this piezoelectric element is located on this shell fragment, and draw power supply by this piezoelectric element, at this shell fragment one end this pouring weight is set, when tyre rotation, make this shell fragment vibration, thereby and produce a power supply by vibratory force effect and this piezoelectric element of this shell fragment, this power supply provides a power supply to this pressure sensor and this transmission circuit after this rectifying circuit rectification;
Described pressure-sensing unit comprises one pneumatic, one magnetic core stick, induction coil and a change-over circuit;
Described pneumatic one end is provided with an opening allows the pressure of tire that enters pass the position of this magnetic core stick, this magnetic core stick is located in this induction coil, to change the inductance value of this induction coil, this induction coil is connected to the oscillation circuit of this change-over circuit, this change-over circuit is to detect the waveform number of times that this oscillating circuit produced, thereby produces first signal output of an expression tire pressure numerical value;
Described transmission circuit receives first signal from this pressure sensor, and sends a wireless secondary signal;
Described tire pressure receptor receives the secondary signal that corresponding this tire pressure detection emitter is launched, and exports one the 3rd signal;
Described control unit comprises a control circuit and an indicating circuit, and this control circuit is to receive the 3rd signal, and via producing an indicating signal after the microprocessor processes.
A kind of wireless tire pressure detector, comprise allly can be installed in tire pressure detection emitter on the tire respectively, at least one is corresponding with this tire pressure detection emitter and can be installed in tire pressure receptor on the car body, an and control unit, this tire pressure detection emitter has a housing, be provided with a power subsystem unit, a pressure-sensing unit and a transmission circuit in this housing, it is characterized in that:
Described power subsystem unit comprises a vibration generating device and a rectifying circuit;
Described vibration generating device is provided with a piezoelectric element, a shell fragment and a pouring weight, this piezoelectric element is located on this shell fragment, and draw power supply by this piezoelectric element, at this shell fragment one end this pouring weight is set, when tyre rotation, make this shell fragment vibration, thereby produce a power supply and act on this piezoelectric element by the vibratory force of this shell fragment, this power supply provides a power supply to this pressure sensor and this transmission circuit after this rectifying circuit rectification;
Described power subsystem unit comprises a vibration generating device and a rectifying circuit;
Described vibration generating device is provided with a piezoelectric element, a shell fragment and a pouring weight, piezoelectric element is provided in a side of on this shell fragment, and draw power supply by this piezoelectric element, be provided with this pouring weight at this shell fragment one end, make this shell fragment vibration during tyre rotation, the vibratory force of this shell fragment acts on piezoelectric element and produces a power supply, and this power supply provides a power supply to this pressure sensor and this transmission circuit after this rectifying circuit rectification;
Described pressure-sensing unit comprises a pressure sensor, signal converter, a coding unit and a radio conversion unit;
Described pressure sensor is the tire pressure in this housing of sensing, and exports the magnitude of voltage of a corresponding tire pressure, and this magnitude of voltage is an analog signal;
Described signal converter is that the analog signal conversion that will import from this pressure sensor is digital signal output;
Described coding unit is the digital signal with the output of this signal converter, through the coding of this coding unit, and with this coding unit in three value of examining of establishing make comparisons, produce one first signal;
Described radio conversion unit is to convert this first signal to wireless secondary signal output;
Described tire pressure receptor receives the secondary signal that corresponding this tire pressure detection emitter is launched, and exports one the 3rd signal;
Described control unit comprises a control circuit and an indicating circuit, and this control circuit is to receive the 3rd signal, and via producing an indicating signal after the microprocessor processes.
Wireless tire pressure detector of the present invention, comprise a plurality of tire pressure detection emitters that are installed in respectively on each tire of automobile, this tire pressure detection emitter has a housing, in this housing, be provided with a power subsystem unit, an one pressure-sensing unit and a transmission circuit, its characteristic is at what: this power subsystem unit comprises a vibration generating device and a rectifying circuit, this vibration generating device is provided with a piezoelectric element, one shell fragment and a pouring weight, this piezoelectric element is arranged on this shell fragment, and draw power supply by this piezoelectric element, this pouring weight is located at this shell fragment one end, during tyre rotation, can make this shell fragment vibration, and utilize this piezoelectric element of vibratory force effect what of this shell fragment, and produce a power supply, this power supply can provide this pressure sensor and this transmission circuit power supply through this rectifying circuit rectification Hou.In addition, at the car body place near each tire pressure detection emitter, correspondence is provided with an acceptor circuit more respectively.
Wireless tire pressure detector of the present invention has not only overcome the shortcoming that prior art exists, and has had the following advantages owing to adopt above-mentioned technical scheme:
1. the present invention is owing to having adopted automatic oscillatory type power generation assembly, so long service life can be guaranteed can not lack power supply after car starts.
2. the present invention is owing to being to detect tire pressure in the electronic induction mode to obtain accurate tire pressure numerical value, make navigating mate have concrete numeral to know the situation of tire, can do in advance adjustment by the tire pressure numerical value that shows to some special situations of what (as the long distance time range of driving, high hot road surface etc.), and observe at any time under steam, can be more prone to grasp the tire pressure situation of tire, doing in good time adjustment, thereby improve traveling security.
3. the present invention is because its radio tire pressure detects between projector and the tire pressure receptor is to adopt closely that mode is provided with, and because this tire pressure receptor range of receiving is less, therefore wave interference that the electric system that receives car launches can be reduced or other are equipped with the interference of the vehicle of tire pressure detector equally, thereby good reception signal can be obtained.
By the description of following some embodiment to wireless tire pressure detector of the present invention, can further connect purpose of the present invention, architectural feature and advantage in conjunction with its accompanying drawing.Wherein, accompanying drawing is:
Fig. 1 is the structural representation according to wireless tire pressure detector first embodiment of the present invention's proposition.
Fig. 2 is the combination sectional structure scheme drawing according to wireless tire pressure detector first embodiment of the present invention's proposition.
Fig. 3 is the circuit block diagram according to wireless tire pressure detector first embodiment of the present invention's proposition.
Fig. 4 is the electrical schematic diagram according to rectifying circuit and booster circuit among wireless tire pressure detector first embodiment of the present invention's proposition.
Fig. 5 is a circuit block diagram of accepting the unit among wireless tire pressure detector first embodiment that proposes according to the present invention.
Fig. 6 is an electrical schematic diagram of accepting the unit among wireless tire pressure detector first embodiment that proposes according to the present invention.
Fig. 7 is the circuit block diagram according to control unit among wireless tire pressure detector first embodiment of the present invention's proposition.
Fig. 8 is the combination sectional structure scheme drawing according to wireless tire pressure detector second embodiment of the present invention's proposition.
Fig. 9 is the circuit block diagram according to pressure-sensing unit among wireless tire pressure detector second embodiment of the present invention's proposition.
Figure 10 is the circuit block diagram according to receiving element among wireless tire pressure detector second embodiment of the present invention's proposition.
Figure 11 is the fixing elastomeric belt body structural representation of usefulness in the wireless tire pressure detector that proposes according to the present invention.
To be the wireless tire pressure detector that proposes according to the present invention be installed in structural representation on the steel ring in the tire by elastomeric belt body with the tire pressure detection emitter of second embodiment to Figure 12.
Figure 13 is the structural representation that cooperates with the location pedestal according to tire pressure detection emitter in the wireless tire pressure detector of the present invention's proposition.
Figure 14 makes tire pressure detection emitter be installed in structural representation on the steel ring in the tire with the location pedestal in the wireless tire pressure detector that proposes according to the present invention.
As shown in Figure 1, this is of the present invention first than Cui embodiment, comprises tire pressure detection emitter 1 on several several cranked tire valves that are installed in car respectively, several are installed in respectively near tire pressure receptor 5 and a control unit 6 that is located on the automotive meter plate on these tire pressure detection emitter 1 car bodies.
Shown in Fig. 2,3, this tire pressure detection emitter 1 is provided with a housing 10, is provided with a power subsystem unit 20, a pressure-sensing unit 30 in this housing 10, reaches a transmission circuit 40.
Be provided with a passage 11 with inside tires or valve (figure does not show) phase configuration in the bottom of this housing 10, this passage 11 is connected by a hollow push rod 12, after the inside of four tires of vehicle or corresponding respectively this radio tire pressure of locking of its valve detect projector 1, tire pressure in the tire just can enter in the housing 10 via this passage 11, form one first accommodation chamber 13 in this housing 10 and between this passage 11, cover cap 14 of corresponding screw lock above this housing 10, be embedded with a dividing plate 15 at this cover cap 14 near the bottom, make 15 on this cover cap 14 and this dividing plate form one second accommodation chamber 16, in this first accommodation chamber 13, be provided with a printed circuit board (PCB) 17, and this power subsystem unit 20 is set on this printed circuit board (PCB) 17, the circuit of this transmission circuit 40 and this pressure-sensing unit 30.
As shown in Figure 3, this is of the present invention first circuit block diagram than the tire pressure detection emitter 1 of Cui embodiment, this power subsystem unit 20 is the power supplys that can supply circuit running on this printed circuit board (PCB) 17 in order to produce, comprises a vibration generating device 21, a rectifying circuit 22, a booster circuit 23, a standby power supply device 24 and a power-saving control circuit 25.
As shown in Figure 2, this vibration generating device 21 is arranged in this second accommodation chamber 16, comprise a piezoelectric element 210, a shell fragment 211 and a pouring weight 212, this piezoelectric element 210 is located on this shell fragment 211, and can draw power supply and be connected to this printed circuit board (PCB) 17, these shell fragment 211 1 ends are embedded the position, stage casing at these second accommodation chamber, 16 madial walls, the other end is embedded in this pouring weight 212, this pouring weight 212 is the vibrations that produce than large amplitude in order to this shell fragment 211 of interlock, when the wheel of vehicle is rolling, this shell fragment 211 of this vibration generating device 21 can constantly be gone up, following vibration makes this piezoelectric element 210 produce piezoeffect and then export an alternating current.
As shown in Figure 4, this rectifying circuit 22 is that (D1～D4) constitutes a full-wave rectifying circuit, and its effect is to be direct current (DC) with AC rectification that this piezoelectric element 210 is exported by four diodes 220.
This booster circuit 23 comprises a power storage elements 230 (being an electric capacity in the present embodiment); the direct current (DC) of being exported from this rectifying circuit 22 is temporary in this power storage elements 230; and then through a current limiting element 231 (being a current-limiting resistance in the present embodiment); to limit to these standby power supply device 24 electrically-charged magnitudes of current; and utilize a protecting component 232 (being a diode in the present embodiment) so that a voltage limit to be provided, avoid 24 chargings of this emergency battery device excessive and damage the circuit of this pressure-sensing unit 30.
Shown in Fig. 3,4, this standby power supply device 24 is the mouths that are connected this booster circuit 23, to reach by 21 pairs of this standby power supply device 24 electrically-charged effects of this vibration generating device, and this standby power supply device 24 can provide and be connected power supply when car is waited for bus or in the short time stagnation of movement and use, in the present embodiment, this standby power supply device 24 is to adopt a rechargeable battery.
This power-saving control circuit 25 is to be used for when tire stops operating, after this vibration generating device 21 stops vibrating power-generation, this rectifying circuit 22 is output as 0 volt, will this pressure-sensing unit 30 of sever supply and this standby power supply device 24 of transmission circuit power supply 40 in a schedule time, to reach purpose of power saving.
As Fig. 2, shown in 3, this pressure-sensing unit 30 comprises one pneumatic 31, a magnetic core stick 32, an induction coil 33 and a change-over circuit 34, this pneumatic 31 is located between this passage 11 and first accommodation chamber 13, this pneumatic 31 is flexible materials in the present embodiment, and form an air chamber and a plurality of fold, and be provided with an opening (figure do not show) and be communicated with this passage 11 at the one end, the tire pressure of tire is entered in this pneumatic 31, this top of pneumatic 31 connects this magnetic core stick 32, this magnetic core stick 32 is in this induction coil 33 that is located in movably on this printing electroplax 17, be provided with a first microprocessor 340 in this change-over circuit 34, this induction coil 33 is connected on the oscillation circuit 341 of first microprocessor 340 of this change-over circuit 34, by by this magnetic core stick 32 moving in induction coil 33, respond to this induction coil 33, to change the LC oscillation frequency that this oscillation circuit 341 is produced, this first microprocessor 340 is to detect the oscillator signal that this oscillation circuit 341 is produced in a set time, thus, the signal of being sensed is seen through this first microprocessor 340 convert a numerical value to, and compile by this first microprocessor 340 and to produce one first signal with ISN, launch the secondary signal of a radio signal again and export this transmission circuit 40 to.
Please cooperate referring to Fig. 1,5, shown in 6, these tire pressure receptors 5 are to be installed in car body near the tire place, and be provided with an acceptor circuit 50, can receive the secondary signal that cooresponding tire pressure detection emitter 1 is launched thus, this acceptor circuit 50 comprises a receiving wire 51, one high-frequency amplifier circuit 52, one detecting circuit 53, one low-frequency filter circuit 54, one low-frequency amplifier circuit 55 and a comparator circuit 56, this receiving wire 51 is to be used for receiving the secondary signal that a corresponding tire pressure detection emitter 1 launched and to input to this high-frequency amplifier circuit 52, this high-frequency amplifier circuit 52 is via a first order amplifying circuit 520 outputs, connect a filter 521 and second, three-stage amplifier 522,523, to increase the high-frequency gain in the signal and to reduce the gain of its low frequency, this signal is again by this detecting circuit 53, this low-frequency filter circuit 54 and this low-frequency amplifier circuit 55, obtaining the good analog signal of noise ratio, and by 56 pairs of these analog signals of this comparator circuit via wave shaping to convert the 3rd signal of a numeral to.
As shown in Figure 7, this control unit 6 is provided with a mu balanced circuit 60, a control circuit 61 and an indicating circuit 62.This mu balanced circuit 60 is that power supply that car provides is given providing this control circuit 61 and this indicating circuit 62 after the voltage stabilizing, and be provided with a power light 600, with the display power supply opening, this control circuit 61 is by one second microprocessor 610, to read the 3rd signal of the numeral that these tire pressure receptors 5 are exported, read the 3rd signal and obtain a tire pressure value via this second microprocessor 610, this indicating circuit 62 provides a digital display 621, in the instrument carrier panel of car and be provided with an alarm 620, this tire pressure value is after the relatively more default normal tire pressure value scope of this second microprocessor 610, if tire pressure is too high or too lowly will open this alarm 620, and this second microprocessor 610 can convert this tire pressure value to an indicator signal, control this digital display 621 and show a tire pressure numerical value, in the present invention, this digital display is a LCD digital display, or a light-emitting diode display (figure does not show), to show that the tire pressure value that obtains is the tire pressure value of that tire.
Shown in Fig. 8,9, of the present invention second than Cui embodiment with above-mentioned first than Cui embodiment different be to be pressure-sensing unit 30 and acceptor circuit 50, be pressure-sensing unit 70 and the tire pressure receptor 8 (referring to Figure 10) that adopts a kind of piezoelectricity sensing mode at present embodiment.
Please cooperate referring to Fig. 8, shown in 9, this pressure-sensing unit 70 is power supplys that its running is provided by above-mentioned power subsystem unit 20, and can be by pressure sensor 71 sensing tire pressures by a piezoelectric type, and export the magnitude of voltage (being analog signal) of a corresponding tire pressure, in addition, there is one can be the signal converter 72 of digital signal output with analog signal conversion from these pressure-sensing unit 70 inputs, one can with the digital signal encoding of this signal converter 72 outputs and with its in three value of examining of setting make comparisons and obtain the coding unit 73 of one first signal, and one can be converted into the radio conversion unit 74 that wireless secondary signal sends (because the detailed circuit of transmission circuit is identical with in the past technology, so no longer be described in detail).
Please cooperate referring to shown in Figure 10, this secondary signal is by radio receiving element 80 received signals that are installed in the car body instrument, this signal is decoded via a decoding unit 81 earlier, again through a read out instrument 82 with demonstrate tire pressure value or tire pressure the height state, when tire pressure when being unusual, this decoding unit 81 can be opened a warning system 83 send the sound with the announcement of warning.
Cooperate shown in Fig. 8,11,12, it is fixing that the fixed form of this tire pressure detection emitter 1 also can have the elastomeric belt body 90 of hook fastener 91 with two ends, and on the bottom outer rim of the housing 10 of this tire pressure detection emitter 1 and the cover cap 14 moulding several can be subjected to the knock hole 92 of hook fastener 91 snappings of this elastomeric belt body 90, these elastomeric belt body 90 latch closures and axle are located on the steel ring in the tire of vehicle axletree both sides, so that this tire pressure detection emitter 1 fixedly on the steel ring in the tire, is made this tire pressure detection emitter 1 sensing tire pressure at any time.
In addition, please cooperate referring to Figure 13, shown in 14, this tire pressure detection emitter 1 fixed form also can be a location pedestal 93 on the steel ring that can be fixed in the tire, this location pedestal 93 is provided with one first embedding portion 94 (present embodiment is a negative thread), and this tire pressure detection emitter 1 outside the air extractor vent of these housing 10 bottoms one of moulding with this first be embedded that portion 94 cooperatively interacts second be embedded portion 95 (present embodiment is an outside thread), make this tire pressure detection emitter 1 second be embedded that portion's 95 spiral shells are solid to be embedded portion 94 at first of this location pedestal 93, make this tire pressure detection emitter 1 sensing tire pressure at any time with this.
In sum, wireless tire pressure detector of the present invention is owing to adopt automatic oscillatory type power generation assembly, long service life not only, and can guarantee can not lack power supply after car starts; Simultaneously, owing to adopted the electronic induction mode to detect tire pressure, thereby obtain accurate tire pressure numerical value, and can know the situation of tire according to the concrete numeral of tire pressure numerical value, with the adjustment before doing good, observe at any time under steam, can be more prone to grasp the tire pressure situation of tire, doing in good time adjustment, and improve traveling security; In addition, because it is to adopt closely that mode is provided with that radio tire pressure detects between projector and the tire pressure receptor, and because this tire pressure receptor range of receiving is less, therefore wave interference that the electric system that receives car launches can be reduced or other are equipped with the interference of the vehicle of tire pressure detector equally, thereby good reception signal can be obtained.
Claims (16)
1. wireless tire pressure detector, comprise allly can be installed in tire pressure detection emitter on the tire respectively, at least one is corresponding with this tire pressure detection emitter and can be installed in tire pressure receptor on the car body, an and control unit, this tire pressure detection emitter has a housing, be provided with a power subsystem unit, a pressure-sensing unit and a transmission circuit in this housing, it is characterized in that:
Described power subsystem unit comprises a vibration generating device and a rectifying circuit;
Described vibration generating device is provided with a piezoelectric element, a shell fragment and a pouring weight, this piezoelectric element is located on this shell fragment, and draw power supply by this piezoelectric element, at this shell fragment one end this pouring weight is set, when tyre rotation, make this shell fragment vibration, thereby and produce a power supply by vibratory force effect and this piezoelectric element of this shell fragment, this power supply provides a power supply to this pressure sensor and this transmission circuit after this rectifying circuit rectification;
Described pressure-sensing unit comprises one pneumatic, one magnetic core stick, induction coil and a change-over circuit;
Described pneumatic one end is provided with an opening allows the pressure of tire that enters pass the position of this magnetic core stick, this magnetic core stick is located in this induction coil, to change the inductance value of this induction coil, this induction coil is connected to the oscillation circuit of this change-over circuit, this change-over circuit is to detect the waveform number of times that this oscillating circuit produced, thereby produces first signal output of an expression tire pressure numerical value;
Described transmission circuit receives first signal from this pressure sensor, and sends a wireless secondary signal;
Described tire pressure receptor receives the secondary signal that corresponding this tire pressure detection emitter is launched, and exports one the 3rd signal;
Described control unit comprises a control circuit and an indicating circuit, and this control circuit is to receive the 3rd signal, and via producing an indicating signal after the microprocessor processes.
2. wireless tire pressure detector as claimed in claim 1 is characterized in that:
Described tire pressure receptor is corresponding with the quantity of tire pressure detection emitter, and each tire pressure receptor is installed in the car body place near each tire respectively, the secondary signal of being launched with cooresponding tire pressure detection emitter on the short distance reception adjacent tires.
3. wireless tire pressure detector as claimed in claim 1 is characterized in that:
Described power subsystem unit also is provided with a second source.
4. wireless tire pressure detector as claimed in claim 3 is characterized in that:
Described second source is a rechargeable device.
5. wireless tire pressure detector as claimed in claim 4 is characterized in that:
Described power subsystem unit also is provided with a booster circuit, and this booster circuit is that the power supply that this vibration generating device is produced boosts, with action that this second source is charged.
6. wireless tire pressure detector as claimed in claim 3 is characterized in that:
Described power subsystem unit also is provided with a power-saving control circuit, and this power-saving control circuit is in order to judge that this vibration generating device does not have when generating in a specified time, close this second source.
7. wireless tire pressure detector as claimed in claim 1 is characterized in that:
Described pneumatic is that flexible materials is made, and forms an air chamber and a plurality of fold.
8. wireless tire pressure detector as claimed in claim 1 is characterized in that:
Described tire pressure receptor respectively comprises a receiving wire, a high-frequency amplifier circuit, a detecting circuit, a low-frequency amplifier circuit and a comparator, after this secondary signal receives via this receiving wire, through this high-frequency amplifier circuit, this detecting circuit, this low-frequency amplifier circuit handle a signal, and after doing wave shaping by this comparator, the 3rd signal of tire pressure value is represented in output.
9. wireless tire pressure detector, comprise allly can be installed in tire pressure detection emitter on the tire respectively, at least one is corresponding with this tire pressure detection emitter and can be installed in tire pressure receptor on the car body, an and control unit, this tire pressure detection emitter has a housing, be provided with a power subsystem unit, a pressure-sensing unit and a transmission circuit in this housing, it is characterized in that:
Described power subsystem unit comprises a vibration generating device and a rectifying circuit;
Described vibration generating device is provided with a piezoelectric element, a shell fragment and a pouring weight, this piezoelectric element is located on this shell fragment, and draw power supply by this piezoelectric element, at this shell fragment one end this pouring weight is set, when tyre rotation, make this shell fragment vibration, thereby produce a power supply and act on this piezoelectric element by the vibratory force of this shell fragment, this power supply provides a power supply to this pressure sensor and this transmission circuit after this rectifying circuit rectification;
Described power subsystem unit comprises a vibration generating device and a rectifying circuit;
Described vibration generating device is provided with a piezoelectric element, a shell fragment and a pouring weight, piezoelectric element is provided in a side of on this shell fragment, and draw power supply by this piezoelectric element, be provided with this pouring weight at this shell fragment one end, make this shell fragment vibration during tyre rotation, the vibratory force of this shell fragment acts on piezoelectric element and produces a power supply, and this power supply provides a power supply to this pressure sensor and this transmission circuit after this rectifying circuit rectification;
Described pressure-sensing unit comprises a pressure sensor, signal converter, a coding unit and a radio conversion unit;
Described pressure sensor is the tire pressure in this housing of sensing, and exports the magnitude of voltage of a corresponding tire pressure, and this magnitude of voltage is an analog signal;
Described signal converter is that the analog signal conversion that will import from this pressure sensor is digital signal output;
Described coding unit is the digital signal with the output of this signal converter, through the coding of this coding unit, and with this coding unit in three value of examining of establishing make comparisons, produce one first signal;
Described radio conversion unit is to convert this first signal to wireless secondary signal output;
Described tire pressure receptor receives the secondary signal that corresponding this tire pressure detection emitter is launched, and exports one the 3rd signal;
Described control unit comprises a control circuit and an indicating circuit, and this control circuit is to receive the 3rd signal, and via producing an indicating signal after the microprocessor processes.
10. wireless tire pressure detector as claimed in claim 9 is characterized in that:
Described tire pressure receptor is corresponding with the quantity of tire pressure detection emitter, and each tire pressure receptor is installed in the car body place near each tire respectively, the secondary signal of being launched with cooresponding tire pressure detection emitter on the short distance reception adjacent tires.
11. wireless tire pressure detector as claimed in claim 9 is characterized in that:
Described power subsystem unit also is provided with a standby power supply device.
12. wireless tire pressure detector as claimed in claim 11 is characterized in that:
Described standby power supply device is a rechargeable device.
13. wireless tire pressure detector as claimed in claim 12 is characterized in that:
Described power subsystem unit also is provided with a booster circuit, and this booster circuit is in order to the power supply that this power generation assembly produced is boosted, with action that this standby power supply device is charged.
14. wireless tire pressure detector as claimed in claim 11 is characterized in that:
Described power subsystem unit also is provided with a power-saving control circuit, and this power-saving control circuit is in order to judge that this power generation assembly does not have when generating in a specified time, close this standby power supply device.
15., it is characterized in that as claim 1 or 9 described wireless tire pressure detectors:
Described indicating circuit is to adopt light-emitting diode (LED) telltale to show.
16., it is characterized in that as claim 1 or 9 described wireless tire pressure detectors:
Described indicating circuit is to adopt Liquid Crystal Display (LCD) (LCD) digital display to show.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98106063 CN1227802A (en) | 1998-03-02 | 1998-03-02 | Radio tyre-pressure detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98106063 CN1227802A (en) | 1998-03-02 | 1998-03-02 | Radio tyre-pressure detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1227802A true CN1227802A (en) | 1999-09-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98106063 Pending CN1227802A (en) | 1998-03-02 | 1998-03-02 | Radio tyre-pressure detector |
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| Country | Link |
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| CN (1) | CN1227802A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1326717C (en) * | 2000-10-23 | 2007-07-18 | 米其林技术公司 | Tyre blow-out detector |
| CN1331689C (en) * | 2002-05-10 | 2007-08-15 | 米其林技术公司 | System for generating electric power from a rotating tire's mechanical energy using reinforced piezoelectric materials |
| CN102248894A (en) * | 2011-05-04 | 2011-11-23 | 乔国富 | Electromagnetic inductor of automatic control system for instantaneous out-of-control car in case of front tire burst during high-speed running process |
| CN104302490A (en) * | 2012-04-11 | 2015-01-21 | 霍富霍尔斯贝克福尔斯特有限公司 | Tyre module with piezo-electric transducer and tyre equipped therewith |
| CN105799431A (en) * | 2014-12-31 | 2016-07-27 | 上海群英汽车电子有限公司 | Tire pressure monitoring sensor |
| CN107471927A (en) * | 2016-06-08 | 2017-12-15 | 滴滴（中国）科技有限公司 | A kind of device for monitoring tyre pressure based on piezoelectric ceramics, tire and vehicle |
| CN107639980A (en) * | 2017-09-19 | 2018-01-30 | 蒋志斌 | Magnetic tire monitor |
| CN107933220A (en) * | 2017-12-21 | 2018-04-20 | 上海为彪汽配制造有限公司 | A kind of power generating type tire pressure sensing device and tire pressure monitoring system |
| CN108725640A (en) * | 2017-04-14 | 2018-11-02 | 株式会社岛野 | Vehicle notification device |
| CN109334355A (en) * | 2018-11-27 | 2019-02-15 | 深圳市星科微数码科技集团有限公司 | A kind of tyre pressure monitoring device |
| CN110722925A (en) * | 2018-07-17 | 2020-01-24 | 本田技研工业株式会社 | Vehicle hub |
-
1998
- 1998-03-02 CN CN 98106063 patent/CN1227802A/en active Pending
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| CN1326717C (en) * | 2000-10-23 | 2007-07-18 | 米其林技术公司 | Tyre blow-out detector |
| CN1331689C (en) * | 2002-05-10 | 2007-08-15 | 米其林技术公司 | System for generating electric power from a rotating tire's mechanical energy using reinforced piezoelectric materials |
| CN102248894A (en) * | 2011-05-04 | 2011-11-23 | 乔国富 | Electromagnetic inductor of automatic control system for instantaneous out-of-control car in case of front tire burst during high-speed running process |
| CN104302490A (en) * | 2012-04-11 | 2015-01-21 | 霍富霍尔斯贝克福尔斯特有限公司 | Tyre module with piezo-electric transducer and tyre equipped therewith |
| CN105799431A (en) * | 2014-12-31 | 2016-07-27 | 上海群英汽车电子有限公司 | Tire pressure monitoring sensor |
| CN107471927A (en) * | 2016-06-08 | 2017-12-15 | 滴滴（中国）科技有限公司 | A kind of device for monitoring tyre pressure based on piezoelectric ceramics, tire and vehicle |
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| CN108725640B (en) * | 2017-04-14 | 2020-06-09 | 株式会社岛野 | Vehicle notification device |
| CN107639980A (en) * | 2017-09-19 | 2018-01-30 | 蒋志斌 | Magnetic tire monitor |
| CN107639980B (en) * | 2017-09-19 | 2020-09-22 | 温州市日益机车部件有限公司 | Magnetic powder tire monitor |
| CN107933220A (en) * | 2017-12-21 | 2018-04-20 | 上海为彪汽配制造有限公司 | A kind of power generating type tire pressure sensing device and tire pressure monitoring system |
| CN107933220B (en) * | 2017-12-21 | 2023-10-27 | 上海为彪汽配制造有限公司 | Power generation type tire pressure sensing device and tire pressure monitoring system |
| CN110722925A (en) * | 2018-07-17 | 2020-01-24 | 本田技研工业株式会社 | Vehicle hub |
| CN110722925B (en) * | 2018-07-17 | 2023-02-21 | 本田技研工业株式会社 | Vehicle hub |
| CN109334355A (en) * | 2018-11-27 | 2019-02-15 | 深圳市星科微数码科技集团有限公司 | A kind of tyre pressure monitoring device |
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