CN204789983U - Velocity radar temperature compensating system - Google Patents
Velocity radar temperature compensating system Download PDFInfo
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- CN204789983U CN204789983U CN201520443338.4U CN201520443338U CN204789983U CN 204789983 U CN204789983 U CN 204789983U CN 201520443338 U CN201520443338 U CN 201520443338U CN 204789983 U CN204789983 U CN 204789983U
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Abstract
The utility model discloses a velocity radar temperature compensating system, including radar module, level conversion module, temperature compensating module, wherein, the radar module is including the VCO, temperature detecting element and the temperature voltage conversion unit that connect gradually. The utility model discloses but real -time supervision velocity radar changes in ambient temperature transfers the slope through the electricity of realizing high linearity behind the temperature compensating, has guaranteed the precision and the sensitivity of radar speed -measuring range finding.
Description
Technical field
The utility model relates to signal transacting field, particularly relates to a kind of velocity radar temperature-compensated system.
Background technology
Along with the high speed development of domestic intelligent transportation industry, Microwave Velocity radar is widely used in test the speed gate management, overspeed snapping system and mobile electronic policeman, in the traffic intelligent managing and control systems such as automobile collision preventing, and become the core sensor of Intelligent traffic management systems gradually.Automobile collision preventing millimetre-wave radar system is a focus applying in automobile of millimeter wave in recent years.The key that millimeter-wave systems is applied on automobile is that the good stability of system and volume are little, so the Study on Integrated of millimetre-wave radar front end becomes the trend of development.
Radar system outwards launches a row continuous frequency modulation millimeter wave by antenna, and the reflected signal of receiving target, launch the rule change that wave frequency presses modulation voltage in time.General modulation signal is triangular signal, because VCO (voltage controlled oscillator) linearity in traditional radar module is poor, especially along with temperature variation, is easy to occur error, causes distance accuracy decline of testing the speed.
Utility model content
The purpose of this utility model is, provides a kind of velocity radar temperature-compensated system, to improve the problem of the sensitivity decrease that velocity radar causes because of temperature fluctuation.
The utility model discloses a kind of velocity radar temperature-compensated system, comprise radar module, level switch module, temperature compensation module; Wherein, above-mentioned radar module comprises the VCO, temperature detecting unit and the temperature voltage converting unit that connect successively; The output terminal of said temperature voltage conversion unit is connected with the input end of above-mentioned level switch module; The output terminal of above-mentioned level switch module is connected with the first input end of said temperature compensating module; Second input end input tuning voltage of said temperature compensating module; The output terminal of said temperature voltage conversion unit is connected with the control end of above-mentioned radar module.
Preferably, above-mentioned radar module adopts monolithic integrated microwave circuit chip (MMIC); Above-mentioned level switch module adopts single-chip microcomputer; Said temperature compensating module adopts amplifier voltage follower LM2904.
The utility model can Real-Time Monitoring velocity radar variation of ambient temperature, by realizing the electric oblique adjusting rate of high linearity after temperature compensation, in actual applications, not by the impact of weather temperature variation, ensure that the precision that radar velocity measurement is found range and sensitivity, have a wide range of applications field.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide further understanding of the present utility model, forms a part of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the theory diagram of velocity radar temperature-compensated system described in the utility model.
Embodiment
In order to make technical problem to be solved in the utility model, technical scheme and beneficial effect clearly, understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
As shown in Figure 1, be the theory diagram of velocity radar temperature-compensated system described in the utility model; The present embodiment comprises radar module 10, level switch module 20, temperature compensation module 30; Wherein, radar module 10 comprises the VCO11, temperature detecting unit 12 and the temperature voltage converting unit 13 that connect successively; The output terminal of temperature voltage converting unit 13 is connected with the input end of level switch module 20; The output terminal of level switch module 20 is connected with the first input end of temperature compensation module 30; Second input end input reference voltage of temperature compensation module 30; The output terminal of temperature voltage converting unit 13 is connected with the control end of radar module 10.
Radar module 10 adopts integrated chip design, frequency coverage 24GHz to 26GHz, transceiver, inside is integrated with VCO, LNA (low noise amplifier), PA (power amplifier), temperature detecting unit 12 and temperature voltage converting unit 13 etc., integrated level is high, and volume is little, can Real-Time Monitoring VCO temperature variation, by realizing the electric oblique adjusting rate of high linearity after temperature compensation, in actual applications, not by the impact of weather temperature variation, ensure that precision and the sensitivity of range finding of testing the speed;
As an embodiment, radar module 10 adopts MMIC; Level switch module 20 adopts single-chip microcomputer; Temperature compensation module 30 adopts amplifier voltage follower LM2904.The present embodiment course of work is as follows: when temperature is T1, MMIC exports corresponding voltage Vtemp to single-chip microcomputer, level conversion is carried out by single-chip microcomputer, export corresponding voltage Va, default tuning voltage Vt is input to together with Va amplifier voltage follower LM2904, amplifier voltage follower LM2904 carries out computing according to the algorithm preset, tuning voltage Vt1a after being compensated, again using the input voltage of tuning voltage Vt1a as the VCO part of MMIC, so just can meet the requirement that whole radar module 10 High Linear electricity adjusts sensitivity, electric oblique adjusting rate also can adjust according to application demand in proportion in addition, adapt to various application occasions.
Above-mentioned explanation illustrate and describes preferred embodiment of the present utility model, but as previously mentioned, be to be understood that the utility model is not limited to the form disclosed by this paper, should not regard the eliminating to other embodiments as, and can be used for other combinations various, amendment and environment, and can in utility model contemplated scope described herein, changed by the technology of above-mentioned instruction or association area or knowledge.And the change that those skilled in the art carry out and change do not depart from spirit and scope of the present utility model, then all should in the protection domain of the utility model claims.
Claims (2)
1. a velocity radar temperature-compensated system, is characterized in that, described system comprises radar module, level switch module, temperature compensation module; Wherein, described radar module comprises the VCO, temperature detecting unit and the temperature voltage converting unit that connect successively; The output terminal of described temperature voltage converting unit is connected with the input end of described level switch module; The output terminal of described level switch module is connected with the first input end of described temperature compensation module; Second input end input tuning voltage of described temperature compensation module; The output terminal of described temperature voltage converting unit is connected with the control end of described radar module.
2. velocity radar temperature-compensated system as claimed in claim 1, is characterized in that, described radar module adopts monolithic integrated microwave circuit chip MMIC; Described level switch module adopts single-chip microcomputer; Described temperature compensation module adopts amplifier voltage follower LM2904.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520443338.4U CN204789983U (en) | 2015-06-25 | 2015-06-25 | Velocity radar temperature compensating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520443338.4U CN204789983U (en) | 2015-06-25 | 2015-06-25 | Velocity radar temperature compensating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204789983U true CN204789983U (en) | 2015-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520443338.4U Expired - Fee Related CN204789983U (en) | 2015-06-25 | 2015-06-25 | Velocity radar temperature compensating system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109143185A (en) * | 2018-07-13 | 2019-01-04 | 中国船舶重工集团公司第七〇九研究所 | A kind of temperature-compensation method, power detection device and radar system |
-
2015
- 2015-06-25 CN CN201520443338.4U patent/CN204789983U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109143185A (en) * | 2018-07-13 | 2019-01-04 | 中国船舶重工集团公司第七〇九研究所 | A kind of temperature-compensation method, power detection device and radar system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151118 Termination date: 20160625 |
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| CF01 | Termination of patent right due to non-payment of annual fee |