CN203142302U - Automobile tyre detection device - Google Patents
Automobile tyre detection device Download PDFInfo
- Publication number
- CN203142302U CN203142302U CN 201220701439 CN201220701439U CN203142302U CN 203142302 U CN203142302 U CN 203142302U CN 201220701439 CN201220701439 CN 201220701439 CN 201220701439 U CN201220701439 U CN 201220701439U CN 203142302 U CN203142302 U CN 203142302U
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- China
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- frequency
- transmitter unit
- detection apparatus
- control processing
- tire detection
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Abstract
The utility model discloses an automobile tyre detection device which comprises: a plurality of sensors disposed in an automobile tyre and used for sensing the automobile tyre; a control processing device, wherein the sensor sends a detected automobile tyre state passing signal to the control processing device, and the control processing device processes the signal and sends to an emission unit; the emission unit which has an input end connected with an output end of the control processing device, has a plurality of sending frequencies, and sends different sending frequencies to a host for reception at different time by a timer; a plurality of oscillating circuits, wherein each oscillating circuit is connected with an output end of the emission unit, one sending frequency matches one oscillating circuit, each oscillating circuit is used for transmitting a corresponding sending frequency to the host through an antenna; the antenna and the host; a power supply module used for supplying power for the automobile tyre detection device.
Description
Technical field
Relate to a kind of automotive tire detection apparatus in the utility model, related in particular to a kind of detecting device with multi-frequency transmission.
Background technology
The tire pressure monitoring feedway was the single frequency band feedway in the past.The many frequency of operations based on 434MHz or 315MHz of tire pressure feedway of each big depot configuration of present stage.Along with the application of automobile-used RF product is tending towards extensively, inevitably present the situation that a plurality of RF products share a frequency range, at this moment, problem of co-channel interference presents thereupon.
So-called co-channel interference refers to that namely the carrier frequency of undesired signal is identical with the carrier frequency of useful signal, and to receiving the interference that the same receiver of useful signal frequently causes.In a single day other RF products take the transmit frequency band of tire pressure monitoring feedway, and its signal just becomes undesired signal for tire pressure monitoring system, useful the transmitting of tire pressure monitoring feedway caused interference, thereby cause the operation irregularity of tire pressure monitoring system.
In the prior art, the feedway internal circuit is by microprocessing unit, and devices such as pressure sensor, temperature sensor, battery charge sensor, acceleration pick-up, RF Transmitter, LF Receiver, lithium cell constitute; Sensor is image data and be sent to microprocessing unit separately, integrates the back emission by microprocessing unit; RF Transmitter can only use single frequency band; Feedway weight is greatly about 40-50g.
This just causes the various sensors of external individual packages, the relative cost height, and sensor reliability is relatively low; The circuit card size is bigger, influences appearance design and the cost optimization of mechanism's miniaturization; Chip integration is low, and each sensor power consumption stream can't effectively reduce, and effectively utilizes ability lower to battery; Existing single frequency band emission design can't be mated the designing requirement of following different frequency range better (as single 315MHz or single 434MHz or 315MHz﹠amp; 434MHz uses etc. simultaneously), can not the sharing design.
The utility model content
The utility model provides a kind of automotive tire detection apparatus, and it has increased shared property and the stability of system.
The utility model discloses a kind of automotive tire detection apparatus, it comprises: a plurality of sensors, and be arranged at motor tire and be used for the induction motor tire, described sensor sends to the control processing equipment with detected vehicle tyre data; The control processing equipment, this control processing equipment sends to transmitter unit after described data are converted to signal; Transmitter unit, the input end of described transmitter unit links to each other with the mouth of described control processing equipment, this transmitter unit has a plurality of transmission frequency, and described transmitter unit comprises a time meter, and this time meter sends different transmission frequency in the different time allows main frame receive; A plurality of oscillating circuits, each oscillating circuit links to each other with the mouth of described transmitter unit, and arbitrary transmission frequency is mated mutually one by one with an oscillating circuit, and each oscillating circuit passes through a day alignment main frame transmission for transmission frequency and signal that will be corresponding with it; Power module is for the electric weight that automotive tire detection apparatus is provided; Antenna and main frame.
Preferably, described transmitter unit also comprises crystal oscillator frequency, frequency divider, phase demodulator, low pass electric capacity, voltage controlled oscillator (VCO), the transmission circuit by the outside input, described time meter is used for making frequency divider carry out frequency division in the different periods according to different radixes by timing, and the frequency of frequency divider output and the setting value in the phase demodulator compared, and obtain comparatively pure frequency signal by low pass electric capacity, and by obtained exporting some in a plurality of transmission frequency by timer-operated voltage controlled oscillator (VCO).
Preferably, described sensor is in pressure sensor, temperature sensor, voltage sensor, the acceleration pick-up one.
Preferably, it also comprises the low frequency receiving element, and this low frequency receiving element is electrically connected mutually with described control processing equipment, is used for by it to control processing equipment input energizing signal.
Preferably, it comprises that also one is connected in the select switch between transmitter unit and the oscillating circuit.
Preferably, this automotive tire detection apparatus is integrated on the integrated chip, and the operating voltage of this integrated chip is 1.5V.
Preferably, described power module is button-type lithium cell.
Preferably, the transmission frequency of described transmitter unit is two, and two oscillating circuits mate mutually one by one with two transmission frequency of transmitter unit.
The utility model adopts above structure, has the following advantages:
High integrated tire pressure monitoring IC integrated level height (integrating 8051 microcontrollers, RF Transmitter, LF Receiver, AFE(analog front end), analog-digital converter, pressure sensor, temperature sensor, battery voltage sensor, acceleration pick-up etc.);
Can switch transmit frequency band, prevent co-channel interference, increase the availability of frequency spectrum;
The feedway operating voltage can be low to moderate 1.5V, realizes the peak use rate of battery electric quantity;
Improve product stability and EMC/EMI anti-interference resistance;
Cost is low, and synthesized competitiveness promotes.
Description of drawings
Accompanying drawing 1 is the structural representation of the automotive tire detection apparatus in the utility model.
Accompanying drawing 2 is the structure principle chart of the transmitter unit in the utility model.
The specific embodiment
Below in conjunction with accompanying drawing preferred embodiment of the present utility model is described in detail, thereby so that advantage of the present utility model and feature can be easier to be it will be appreciated by those skilled in the art that protection domain of the present utility model is made more explicit defining.
As shown in Figure 1, a kind of automotive tire detection apparatus, it comprises a plurality of sensors, control processing equipment, transmitter unit, a plurality of oscillating circuit, antenna and main frame, power module.
In the present embodiment, sensor can be pressure sensor, temperature sensor, voltage sensor or acceleration pick-up.Sensor detects in real time to motor tire, and gives the control processing equipment with the data transmission that detection obtains.
The control processing equipment is converted to signal and sends to transmitter unit after receiving the data that sensor sends.
The input end of transmitter unit links to each other with the mouth of described control processing equipment.Transmitter unit can have a plurality of transmission frequency, and transmitter unit sends different transmission frequency by a time meter in the different time allows main frame receive.In the present embodiment, transmitter unit can send two transmission frequency, and these two transmission frequency can both allow main frame receive.Transmitter unit comprise by the crystal oscillator frequency of outside input, timer, frequency divider, phase demodulator,, low pass electric capacity, voltage controlled oscillator (VCO), transmission circuit, timer is used for making frequency divider carry out frequency division in the different periods according to different radixes by timing, and the frequency of frequency divider output and the setting value in the phase demodulator compared, and obtain comparatively pure frequency signal by low pass electric capacity, and by obtained exporting some in a plurality of transmission frequency by timer-operated voltage controlled oscillator (VCO).
Each oscillating circuit links to each other with the mouth of described transmitter unit, and arbitrary transmission frequency is mated mutually one by one with an oscillating circuit, and each oscillating circuit passes through a day alignment main frame transmission for transmission frequency that will be corresponding with it.In the present embodiment, this automotive tire detection apparatus comprises two oscillating circuits, one of them oscillating circuit and a corresponding coupling of frequency.
Power module is for the electric weight that automotive tire detection apparatus is provided.
In the present embodiment, automotive tire detection apparatus also comprises the low frequency receiving element, and this low frequency receiving element is electrically connected mutually with described control processing equipment, is used for by it to control processing equipment input energizing signal.
Automotive tire detection apparatus also comprises the select switch that is connected between transmitter unit and the oscillating circuit.Select switch can carry out optionally conducting to transmitter unit and a plurality of oscillating circuit.In the present embodiment, select switch is the single-pole double throw (SPDT) select switch.
This automotive tire detection apparatus is integrated on the integrated chip, and the operating voltage of this integrated chip is 1.5V.Therefore, power module is button-type lithium cell.
The utility model adopts above structure, has the following advantages:
1, the tire pressure monitoring IC that contains integrated sensor circuit can be used for real-time data acquisition, in order to collecting efficiency and the system response efficient that improves data;
2. the tire pressure monitoring IC that contains integrated sensor circuit can be used for power consumption stream and requires in the extremely strict lithium cell long life scheme;
3. the tire pressure monitoring IC that contains integrated sensor circuit can be used for littler mechanism, in the lighter weight miniaturization design;
4. two-band is launched simultaneously alternately, has increased shared property and the stability of system.
More than specific embodiment of the present utility model is illustrated in conjunction with diagram, clearly on the basis of not leaving scope and spirit of the present utility model, can much revise prior art and technology.In the technical field, the common knowledge of a GPRS just can be carried out diversified change in technology main idea scope of the present utility model under of the present utility model.
Claims (8)
1. automotive tire detection apparatus is characterized in that it comprises:
A plurality of sensors are arranged at motor tire and are used for the induction motor tire, and described sensor sends to the control processing equipment with detected vehicle tyre data;
The control processing equipment, this control processing equipment sends to transmitter unit after described data are converted to signal;
Transmitter unit, the input end of described transmitter unit links to each other with the mouth of described control processing equipment, this transmitter unit has a plurality of transmission frequency, and described transmitter unit comprises a time meter, and this time meter sends different transmission frequency in the different time allows main frame receive;
A plurality of oscillating circuits, each oscillating circuit links to each other with the mouth of described transmitter unit, and arbitrary transmission frequency is mated mutually one by one with an oscillating circuit, and each oscillating circuit passes through a day alignment main frame transmission for transmission frequency and signal that will be corresponding with it;
Power module is for the electric weight that automotive tire detection apparatus is provided;
Antenna and main frame.
2. automotive tire detection apparatus according to claim 1, it is characterized in that: described transmitter unit also comprises the crystal oscillator frequency by the outside input, frequency divider, phase demodulator, low pass electric capacity, voltage controlled oscillator (VCO), transmission circuit, described time meter is used for making frequency divider carry out frequency division in the different periods according to different radixes by timing, and the frequency of frequency divider output and the setting value in the phase demodulator compared, and obtain comparatively pure frequency signal by low pass electric capacity, and by obtained exporting some in a plurality of transmission frequency by timer-operated voltage controlled oscillator (VCO).
3. automotive tire detection apparatus according to claim 1, it is characterized in that: described sensor is in pressure sensor, temperature sensor, voltage sensor, the acceleration pick-up.
4. automotive tire detection apparatus according to claim 1, it is characterized in that: it also comprises the low frequency receiving element, this low frequency receiving element is electrically connected mutually with described control processing equipment, is used for by it to control processing equipment input energizing signal.
5. automotive tire detection apparatus according to claim 1, it is characterized in that: it comprises that also one is connected in the select switch between transmitter unit and the oscillating circuit.
6. automotive tire detection apparatus according to claim 1, it is characterized in that: this automotive tire detection apparatus is integrated on the integrated chip, and the operating voltage of this integrated chip is 1.5V.
7. according to the described automotive tire detection apparatus in one of claim 1 or 6, it is characterized in that: described power module is button-type lithium cell.
8. automotive tire detection apparatus according to claim 1, it is characterized in that: the transmission frequency of described transmitter unit is two, two transmission frequency of two oscillating circuits and transmitter unit are coupling one by one mutually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220701439 CN203142302U (en) | 2012-12-18 | 2012-12-18 | Automobile tyre detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220701439 CN203142302U (en) | 2012-12-18 | 2012-12-18 | Automobile tyre detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203142302U true CN203142302U (en) | 2013-08-21 |
Family
ID=48969854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220701439 Withdrawn - After Issue CN203142302U (en) | 2012-12-18 | 2012-12-18 | Automobile tyre detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203142302U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103057360A (en) * | 2012-12-18 | 2013-04-24 | 辉创电子科技(苏州)有限公司 | Automobile tire detection device |
-
2012
- 2012-12-18 CN CN 201220701439 patent/CN203142302U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103057360A (en) * | 2012-12-18 | 2013-04-24 | 辉创电子科技(苏州)有限公司 | Automobile tire detection device |
| CN103057360B (en) * | 2012-12-18 | 2015-07-01 | 辉创电子科技(苏州)有限公司 | Automobile tire detection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130821 Effective date of abandoning: 20150701 |
|
| RGAV | Abandon patent right to avoid regrant |