CN103332076A - Magnetic transmission type tire pressure sensor, setting tool and setting method - Google Patents
Magnetic transmission type tire pressure sensor, setting tool and setting method Download PDFInfo
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- CN103332076A CN103332076A CN2013103069930A CN201310306993A CN103332076A CN 103332076 A CN103332076 A CN 103332076A CN 2013103069930 A CN2013103069930 A CN 2013103069930A CN 201310306993 A CN201310306993 A CN 201310306993A CN 103332076 A CN103332076 A CN 103332076A
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Abstract
The invention discloses a magnetic transmission type tire pressure sensor, a setting tool and a setting method. The tire pressure sensor comprises a first micro control unit, a memory unit, a first power supply, a pressure sensing unit, a temperature sensing unit, an acceleration sensing unit, a first low-frequency transmission interface and a magnetic sensing unit. The setting tool comprises a second micro control unit, an internal memory unit, a display unit, a magnetic transmitting unit and a second low-frequency transmission interface. The setting method comprises the steps of using the magnetic sensing unit which is installed in the tire pressure sensor to receive magnetic force lines which are transmitted by the magnetic transmitting unit in the setting tool, then converting the received waveforms into communication protocols and storing the communication protocols in the tire pressure sensor. Therefore, not only can the goal of wireless transmission be achieved, but also the stability of signal transmission can be improved, the restriction of radio regulations can be eliminated, the product quality is improved, the circuit design is simpler, the electricity is saved and the magnetic transmission type tire pressure sensor is not restricted by relevant radio regulations.
Description
Technical field
The present invention relates to the technical field that relevant tire pressure detects, relate in particular to a kind of magnetic force conveying type tyre pressure sensor and setting means and establishing method.
Background technology
Employed tire pressure sensing device all is to see through wireless mode to carry out, and utilizes a setting means wirelessly data transmission such as communications protocol or ID to be finished setting to the tire pressure sensing device when setting is installed on the market at present.Come transmission signal all to need the modulation basic frequency with radio, basic frequency is higher than transmits more than 10 times of data, therefore can make the driving circuit of emission basic frequency and all comparatively complexity and power consumptions of demodulator circuit of reception.Moreover the distance of wireless signal transmission will far will need bigger emissive power, but transmitting range far is interfered again easily or rein in the distortion that effect causes signal because of all general.In addition, the transmitter of wireless signal all needs application authentication to obtain permission just to peddle in various countries.
Therefore, those skilled in the art is devoted to develop always and a kind ofly can overcomes above all problems, need not carrier wave with the magnetic force transmission signal, to have a circuit structure simple, and yet comparatively power saving can not be subjected to magnetic force conveying type tyre pressure sensor and setting means and the establishing method of the restriction of telecommunications rule.
Summary of the invention
In view of the deficiency that above-mentioned prior art exists, the present invention proposes a kind ofly to need not carrier wave with the magnetic force transmission signal to have a circuit structure simple, also comparatively power saving, and can not be subjected to magnetic force conveying type tyre pressure sensor and setting means and the establishing method of the restriction of telecommunications rule.
The present invention is for achieving the above object, and a kind of tyre pressure sensor provided by the invention includes:
One first micro-control unit;
One mnemon, described mnemon is connected with the described first micro-control unit telecommunications;
One is used for providing first power supply of described tyre pressure sensor required electric power, and described first power supply is connected with the described first micro-control unit telecommunications;
One is used for measuring the pressure sensitive unit of tire internal gas pressure value, and described pressure sensitive unit is connected with the described first micro-control unit telecommunications;
One is used for measuring the temperature induction unit of temperature in the tire, and described temperature induction unit is connected with the described first micro-control unit telecommunications;
One is used for measuring the acceleration induction unit of tire acceleration/accel, and described acceleration induction unit is connected with the described first micro-control unit telecommunications;
One is used for sending first low frequency (Low Frequency) coffret of low-frequency signal, and the described first low-frequency transmission interface is connected with the described first micro-control unit telecommunications;
One is used for sensing receives the variation in magnetic field and the waveform transformation that changes is exported to the magnetic force sensing cell of described first micro-control unit, and described magnetic force sensing cell is connected with the described first micro-control unit telecommunications.
Preferable, described magnetic force sensing cell is a hall sensor (Hall Sensor).
Preferable, described tyre pressure sensor also includes one for first wireless (Radio Frequency) coffret that sends signal, and the described first transmission over radio interface is connected with the described first micro-control unit telecommunications.
The present invention also proposes a kind of setting means, includes:
One second micro-control unit;
One is used for storing the internal storage location of tyre pressure sensor communications protocol data, and described internal storage location is connected with the described second micro-control unit telecommunications;
One is used for showing the display unit of described setting means operation information, and described display unit is connected with the described second micro-control unit telecommunications;
One is used for sending the magnetic force transmitter unit of magnetic line of force, and described magnetic force transmitter unit is connected with the described second micro-control unit telecommunications;
One is used for receiving the second low-frequency transmission interface that tyre pressure sensor sends the feedback signal, and the described second low-frequency transmission interface is connected with the described second micro-control unit telecommunications.
Preferable, described magnetic force transmitter unit is an electromagnet.
Preferable, described setting means also includes second a transmission over radio interface that is used for receiving the feedback signal that tyre pressure sensor sends, and the described second transmission over radio interface is connected with the described second micro-control unit telecommunications.
Preferable, described setting means also includes one for the caution unit that sends alerting, and described caution unit is connected with the described second micro-control unit telecommunications.
The present invention also proposes a kind of establishing method of tyre pressure sensor, and it is specific as follows:
At first provide just like the described tyre pressure sensor of the arbitrary claim of claim 1-3, and just like the described setting means of the arbitrary claim of claim 4-7;
Select to download to control program in the described tyre pressure sensor at described setting means then, behind second micro-control unit coding by described setting means, the magnetic force sensing cell of described control program being passed to described tyre pressure sensor by described magnetic force transmitter unit receives;
First micro-control unit of last described tyre pressure sensor restores control program originally and is stored in mnemon after reading the waveform that the magnetic force sensing cell exports.
Preferable, described control program includes the communications protocol of tyre pressure sensor.
Preferable, described control program includes the ID (Identification) of tyre pressure sensor.
Therefore, magnetic force conveying type tyre pressure sensor of the present invention and setting means and establishing method, utilize a magnetic force sensing cell that is installed in the tyre pressure sensor to receive the magnetic line of force that the magnetic force transmitter unit sends in the setting means in the present invention, become communications protocol to be stored in the tyre pressure sensor waveform transformation that receives again, the purpose that so not only can reach transmission over radio also can promote the degree of stability of signal transmission, and also can get rid of the quality of the restriction lifting product of wireless rules.
In sum, the present invention comes transmission signal not only can reach the effect of transmission over radio with magnetic force, and also comparatively simple, constraint that power saving more needn't be subjected to the relevant radio rules in the design of circuit, significantly overcome the defective that prior art exists, reached purpose of the present invention.
Description of drawings
Fig. 1 is the function block schematic diagram of tyre pressure sensor of the present invention;
Fig. 2 is the function block schematic diagram of setting means of the present invention;
Fig. 3 is the circuit diagram of setting means of the present invention and tyre pressure sensor part;
The schematic flow sheet of Fig. 4 during for setting means setting operation of the present invention;
The schematic flow sheet of Fig. 5 during for tyre pressure sensor setting operation of the present invention.
Primary clustering nomenclature among the figure:
Mnemon 12 first power supplys 13
Pressure sensitive unit 14 temperature induction unit 15
The first transmission over radio interface, 18 magnetic force sensing cells 19
Setting means 20 second micro-control units 21
Internal storage location 22 display units 23
Caution unit 24 magnetic force transmitter units 25
The second low-frequency transmission interface, 26 second transmission over radio interfaces 27
Switch 28 second sources 29
Transistor Q1, Q2, Q3, Q4.
The specific embodiment
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Embodiment one:
Fig. 1 is the function block schematic diagram of tyre pressure sensor of the present invention.As shown in Figure 1, present embodiment proposes a kind of tyre pressure sensor 10, includes:
One first micro-control unit 11;
One mnemon 12, mnemon 12 is connected with first micro-control unit, 11 telecommunications;
One is used for providing first power supply, 13, the first power supplys 13 of tyre pressure sensor 10 required electric powers to be connected with first micro-control unit, 11 telecommunications;
One is used for measuring the pressure sensitive unit 14 of tire internal gas pressure value, and pressure sensitive unit 14 is connected with first micro-control unit, 11 telecommunications;
One is used for measuring the temperature induction unit 15 of temperature in the tire, and temperature induction unit 15 is connected with first micro-control unit, 11 telecommunications;
One is used for measuring the acceleration induction unit 16 of tire acceleration/accel, and acceleration induction unit 16 is connected with first micro-control unit, 11 telecommunications;
One is used for sending the first low-frequency transmission interface 17 of low-frequency signal, the first low-frequency transmission interface 17 is connected with first micro-control unit, 11 telecommunications, the first low-frequency transmission interface 17 sends low-frequency signal to the main frame of installing on the car or a setting means, and this low-frequency signal can be 315MHz or 433MHz;
One is used for the magnetic force sensing cell 19 that sensing receives the variation in magnetic field and the waveform transformation that changes exported to first micro-control unit 11, magnetic force sensing cell 19 is connected with first micro-control unit, 11 telecommunications, exemplary, magnetic force sensing cell 19 is a hall sensor in the present embodiment.
Concrete, the tyre pressure sensor 10 of present embodiment can also comprise one for the first transmission over radio interface 18 that sends signal, the first transmission over radio interface 18 is connected with first micro-control unit, 11 telecommunications, and the first transmission over radio interface 18 can send signal to the main frame of installing on the car or a setting means.In the present embodiment, the first low-frequency transmission interface 17 and the first transmission over radio interface 18 can be selected one and arranges or the two all arranges or wherein one makes to be wired splicing ear into.
Embodiment two:
Fig. 2 is the function block schematic diagram of setting means of the present invention.Correspond to tyre pressure sensor 10, include a setting means 20 among the present invention in addition and cooperate tyre pressure sensor 10, as shown in Figure 2, setting means 20 includes:
One second micro-control unit 21;
One is used for storing the ID (Identification) of tyre pressure sensor 10 and the internal storage location 22 of communications protocol data, and internal storage location 22 is connected with second micro-control unit, 21 telecommunications;
One is used for the display unit 23 of display setting instrument 20 operation informations, and display unit 23 is connected with second micro-control unit, 21 telecommunications;
One is used for sending the magnetic force transmitter unit 25 of magnetic line of force, and magnetic force transmitter unit 25 is connected with second micro-control unit, 21 telecommunications, and is exemplary, and the magnetic force transmitter unit 25 of present embodiment is an electromagnet;
The one second low-frequency transmission interface, 26, the second low-frequency transmission interfaces 26 that are used for the reception tyre pressure sensor 10 feedback signal that sends are connected with second micro-control unit, 21 telecommunications;
One is used for the second source 29 of supply setting means 20 required electric powers, and second source 29 is connected with second micro-control unit, 21 telecommunications.
As the further specific embodiment of present embodiment, the setting means 20 of present embodiment also includes: the second transmission over radio interface 27 and caution unit 24.
The one second transmission over radio interface, 27, the second transmission over radio interfaces 27 that be used for to receive the feedback signal that tyre pressure sensor 10 sends are connected with second micro-control unit, 21 telecommunications.In the setting means of present embodiment, the second low-frequency transmission interface 26 and the second transmission over radio interface 27 can be selected one and arrange or the two all arranges or wherein one changes a wired splicing ear into.
One is used for sending the caution unit 24 of alerting, and caution unit 24 is connected with second micro-control unit, 21 telecommunications, and is exemplary, can adopt the caution of light or the sound.
Embodiment three:
As shown in drawings, see through the structure of tyre pressure sensor 10 with the setting means 20 of embodiment two of embodiment one, the establishing method of the tyre pressure sensor of present embodiment is as follows:
Shown in the 3rd figure, be this setting means 20 among the present invention and tyre pressure sensor 10 circuit diagram partly.Concrete, second micro-control unit 21 of setting means 20 connects one by four switches, 28 control four transistor Q1, Q2, Q3, Q4 and connects the bridge circuit that a magnetic force transmitter unit 25 constitutes, wherein transistor Q3 and Q4 have ground connection, and this magnetic force transmitter unit 25 is an electromagnet in the present embodiment.
The schematic flow sheet of Fig. 4 during for setting means setting operation of the present invention.As shown in Figure 4, at the setting means 20 selected control programs that will download on the tyre pressure sensor 10, described control program can be because different depots be different with different car moneys.Sending magnetic force transmitter unit 25 then behind second micro-control unit 21 coding by setting means 20 to spreads out of control program, the mode of its control can be for example second micro-control unit, 21 control Q1 and Q4 conducting Q2 and not conductings of Q3, electromagnet is conducting, magnetic force sensing cell 19 on the tyre pressure sensor 10 can receive the N utmost point at this moment, and magnetic force sensing cell 19 is output as Hi to first micro-control unit 11 of tyre pressure sensor 10.And if second micro-control unit 21 control Q1 and not conducting of Q4 and Q2 and Q3 conducting, electromagnet is conducting, magnetic force sensing cell 19 on this tyre pressure sensor 10 can receive the S utmost point at this moment, and magnetic force sensing cell 19 is output as Lo to first micro-control unit 11 of tyre pressure sensor 10.
Mode by structure described above and control, the magnetic force transmitter unit 25 of setting means 20 can be transferred to control program tyre pressure sensor 10, and first micro-control unit 11 of tyre pressure sensor 10 can restore control program originally by calculation and is stored in the mnemon 12 reading waveform that magnetic force sensing cell 19 exports.And setting means 20 is understood the feedback signal that repeats transmission control procedures and wait for tyre pressure sensor 10.First micro-control unit 11 of tyre pressure sensor 10 can be detectd the calculation of mistake after receiving data, tyre pressure sensor 10 can see through the first transmission over radio interface 18 or the first low-frequency transmission interface 17 or wired coffret and sends a feedback signal and give setting means 20 when the data of receiving when tyre pressure sensor 10 were correct.Setting means 20 can stop to spread out of control program after receiving the feedback signal.Described control program in the present embodiment can be the different communications protocol journey of each label or the ID of tyre pressure sensor or the ID of communications protocol and tyre pressure sensor.
And shown in the 5th figure, if during the data mal that tyre pressure sensor 10 is received, tyre pressure sensor 10 will can not send the feedback signal and give setting means 20.Setting means 20 can spread out of control program again and receive again once by tyre pressure sensor before not receiving the feedback signal, till repeating this action and receiving the feedback signal to setting means 20.
In addition, can adopt transistor Q1, not conducting of Q2 for the problem of eliminating counter electromotive force in the present embodiment, the mode of transistor Q3, Q4 conducting or transistor Q1, Q2, Q3, the neither conducting of Q4 is eliminated counter electromotive force, make the magnetically-actuated circuit can be two-way, the fast speed conversion.Do not limit will be in graphic disclosed mode for the magnetically-actuated circuit of setting means 20 in the present embodiment, namely not necessarily to use four two circuit modes of switch, also can use the mode in single loop for example to use that the one way circuit of single switch control one-transistor and a magnetic force transmitter unit is the same can to reach the effect of exporting magnetic force.Come transmission signal not only can reach the effect of transmission over radio with magnetic force, and also comparatively simple, constraint that power saving more needn't be subjected to the relevant radio rules in the design of circuit, significantly improve the problem that previous desire is improved, also reached purpose of the present invention.
The above only is preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. a tyre pressure sensor is characterized in that, includes:
One first micro-control unit;
One mnemon, described mnemon is connected with the described first micro-control unit telecommunications;
One is used for providing first power supply of described tyre pressure sensor required electric power, and described first power supply is connected with the described first micro-control unit telecommunications;
One is used for measuring the pressure sensitive unit of tire internal gas pressure value, and described pressure sensitive unit is connected with the described first micro-control unit telecommunications;
One is used for measuring the temperature induction unit of temperature in the tire, and described temperature induction unit is connected with the described first micro-control unit telecommunications;
One is used for measuring the acceleration induction unit of tire acceleration/accel, and described acceleration induction unit is connected with the described first micro-control unit telecommunications;
One is used for sending the first low-frequency transmission interface of low-frequency signal, and the described first low-frequency transmission interface is connected with the described first micro-control unit telecommunications;
One is used for sensing receives the variation in magnetic field and the waveform transformation that changes is exported to the magnetic force sensing cell of described first micro-control unit, and described magnetic force sensing cell is connected with the described first micro-control unit telecommunications.
2. tyre pressure sensor as claimed in claim 1, it is characterized in that: described magnetic force sensing cell is a hall sensor.
3. tyre pressure sensor as claimed in claim 1 is characterized in that: described tyre pressure sensor also includes first a transmission over radio interface that is used for sending signal, and the described first transmission over radio interface is connected with the described first micro-control unit telecommunications.
4. a setting means is characterized in that, includes:
One second micro-control unit;
One is used for storing the internal storage location of tyre pressure sensor communications protocol data, and described internal storage location is connected with the described second micro-control unit telecommunications;
One is used for showing the display unit of described setting means operation information, and described display unit is connected with the described second micro-control unit telecommunications;
One is used for sending the magnetic force transmitter unit of magnetic line of force, and described magnetic force transmitter unit is connected with the described second micro-control unit telecommunications;
One is used for receiving the second low-frequency transmission interface that tyre pressure sensor sends the feedback signal, and the described second low-frequency transmission interface is connected with the described second micro-control unit telecommunications.
5. setting means as claimed in claim 4, it is characterized in that: described magnetic force transmitter unit is an electromagnet.
6. setting means as claimed in claim 4, it is characterized in that: described setting means also includes second a transmission over radio interface that be used for to receive the feedback signal that tyre pressure sensor sends, and the described second transmission over radio interface is connected with the described second micro-control unit telecommunications.
7. setting means as claimed in claim 4 is characterized in that: described setting means also includes a caution unit that is used for sending alerting, and described caution unit is connected with the described second micro-control unit telecommunications.
8. the establishing method of a tyre pressure sensor is characterized in that:
At first provide just like the described tyre pressure sensor of the arbitrary claim of claim 1-3, and just like the described setting means of the arbitrary claim of claim 4-7;
Select to download to control program in the described tyre pressure sensor at described setting means then, behind second micro-control unit coding by described setting means, the magnetic force sensing cell of described control program being passed to described tyre pressure sensor by described magnetic force transmitter unit receives;
First micro-control unit of last described tyre pressure sensor restores control program originally and is stored in mnemon after reading the waveform that the magnetic force sensing cell exports.
9. the establishing method of tyre pressure sensor as claimed in claim 8, it is characterized in that: described control program includes the communications protocol of tyre pressure sensor.
10. the establishing method of tyre pressure sensor as claimed in claim 9, it is characterized in that: described control program includes the ID of tyre pressure sensor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310306993.0A CN103332076B (en) | 2013-07-19 | 2013-07-19 | Magnetic force conveying type tyre pressure sensor and setting means and establishing method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310306993.0A CN103332076B (en) | 2013-07-19 | 2013-07-19 | Magnetic force conveying type tyre pressure sensor and setting means and establishing method |
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| CN103332076B CN103332076B (en) | 2015-12-02 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9522579B1 (en) | 2015-06-02 | 2016-12-20 | Continental Automotive Systems, Inc. | Tire pressure monitoring sensor |
| US9579938B2 (en) | 2015-06-01 | 2017-02-28 | Continental Automotive Systems, Inc. | Apparatus and method to adjust LF sensitivity of TPM sensor |
| CN107009828A (en) * | 2015-11-11 | 2017-08-04 | 为升电装工业股份有限公司 | Tire pressure monitoring system and method of use thereof |
| CN107512142A (en) * | 2017-09-05 | 2017-12-26 | 矽力杰半导体技术(杭州)有限公司 | Code writing station, tire pressure monitoring unit and control method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US9579938B2 (en) | 2015-06-01 | 2017-02-28 | Continental Automotive Systems, Inc. | Apparatus and method to adjust LF sensitivity of TPM sensor |
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| CN107512142A (en) * | 2017-09-05 | 2017-12-26 | 矽力杰半导体技术(杭州)有限公司 | Code writing station, tire pressure monitoring unit and control method |
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|---|---|
| CN103332076B (en) | 2015-12-02 |
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