CN203225723U - Rc oscillator - Google Patents
Rc oscillator Download PDFInfo
- Publication number
- CN203225723U CN203225723U CN 201320231100 CN201320231100U CN203225723U CN 203225723 U CN203225723 U CN 203225723U CN 201320231100 CN201320231100 CN 201320231100 CN 201320231100 U CN201320231100 U CN 201320231100U CN 203225723 U CN203225723 U CN 203225723U
- Authority
- CN
- China
- Prior art keywords
- module
- clock
- oscillator
- temperature
- clock module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Oscillators With Electromechanical Resonators (AREA)
Abstract
The utility model discloses an RC oscillator. The RC oscillator comprises a clock module, a temperature detection module, a processing module, and an adjusting module, wherein the clock module generates an oscillation frequency; the temperature detection module measures the temperature of the clock module in real time; the processing module analyzes the temperature measured by the temperature detection module and a preset temperature, and transmits the result of the analysis; the adjusting module receives the result of the analysis, selects a preset frequency tuning value according to the result of the analysis, and correspondingly adjusts the output frequency of the clock module according to the selected frequency tuning value; and the clock module is provided with a control end, an output end of the temperature detection module is connected with an input end of the processing module, an output end of the processing module is connected with an input end of the adjusting module, and an output end of the adjusting module is connected with the control end of the clock module. By using the RC oscillator provided by the utility model, the problem in the prior art that the oscillation frequency of the RC oscillator can be easily influenced by external environment, and the output frequency is unstable, is solved, and the accuracy of the output frequency of the RC oscillator is improved.
Description
Technical field
The utility model relates to the electronic circuit technology field, relates in particular to a kind of RC oscillator.
Background technology
Oscillator (English: be to produce the electronic component that repeats electric signal (normally sine wave or square wave) oscillator).The circuit of its formation is oscillating circuit.Direct current can be converted to electronic circuit or device with the output of certain frequency ac signal.Kind is a lot, can be divided into self-excited oscillator, driven oscillator by the vibratory stimulation mode; Can be divided into resistance-capacitance oscillator, LC oscillator, crystal oscillator, fork generator etc. by circuit structure; Can be divided into oscillators such as sine wave, square wave, sawtooth waveforms by output waveform.
At present, oscillator is widely used in aspects such as electronics, industry, medical treatment and scientific research, and the frequency of oscillation of the RC oscillator of traditional structure is vulnerable to the influence of outer power voltage fluctuation, variations in temperature or process deviation, make that the output frequency of RC oscillator is very unstable, brought great inconvenience for people's productive life.
The utility model content
Main purpose of the present utility model provides a kind of RC oscillator, is intended to strengthen the antijamming capability of RC oscillator, improves the precision of the output frequency of RC oscillator.
To achieve these goals, the utility model proposes a kind of RC oscillator, this RC oscillator comprises: also comprise temperature detecting module, processing module and adjusting module, described clock module has power input and control end, the output of described temperature detecting module is connected with the input of processing module, the output of described processing module is connected with the input of adjusting module, and the output of described adjusting module is connected with the control end of clock module, wherein:
Described temperature detecting module is used for the temperature of detection clock module in real time;
Described processing module is used for the detected temperature of described temperature detecting module and default temperature value are analyzed, and sends analysis result to described adjusting module;
Described adjusting module is used for after receiving analysis result, chooses frequency preset according to analysis result and repaiies tone pitch and repair tone pitch according to the frequency of choosing the output frequency of clock module is regulated accordingly.
Preferably, described processing module is arithmetic element, and this arithmetic element is used for the detected temperature of described temperature detecting module and the temperature value of presetting are carried out subtraction, and sends result of calculation to described adjusting module.
Preferably, described processing module is comparing unit, and this comparing unit is used for the detected temperature of described temperature detecting module and the temperature value of presetting are compared, and sends comparative result to described adjusting module.
Preferably, described clock module is an integrated chip, and described temperature detecting module comprises with the integrated chip applying or is arranged on integrated chip temperature inside transducer.
Preferably, described clock module is clock circuit.
Preferably, also comprise the D.C. regulated power supply that burning voltage is provided to clock module; Described clock module also has a power input, and the power output end of described D.C. regulated power supply is connected with the power input of clock module.
Preferably, described stabilized voltage power supply is LDO low pressure source of stable pressure.
Preferably, the voltage detection module that also comprises the supply voltage of real-time detection clock module; Described clock module also has a tested voltage end, and the test side of described voltage detection module is connected with the tested voltage end of clock module.
Preferably, described voltage detection module is RC oscillator supply voltage detecting circuit.
The RC oscillator that the utility model proposes detects the clock module temperature in real time by temperature detecting module, processing module is analyzed the detected temperature of described temperature detecting module and default temperature value, and send analysis result to adjusting module, after adjusting module receives analysis result, choosing frequency preset according to analysis result repaiies tone pitch and repaiies tone pitch according to the frequency chosen the output frequency of clock module is carried out corresponding adjusting, thereby reduced the frequency output influence of external environment condition (as temperature) to the RC oscillator, guaranteed the frequency output accuracy of RC oscillator.
Description of drawings
Fig. 1 is the structured flowchart of the utility model RC oscillator one embodiment;
Fig. 2 is the structured flowchart of another embodiment of the utility model RC oscillator;
Fig. 3 is the structured flowchart of the another embodiment of the utility model RC oscillator.
The realization of the utility model purpose, functional characteristics and advantage will be in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
Further specify the technical solution of the utility model below in conjunction with Figure of description and specific embodiment.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
The utility model proposes a kind of RC oscillator.
With reference to Fig. 1, Fig. 1 is the structured flowchart of the utility model RC oscillator one embodiment.
The utility model RC oscillator comprises clock module 10, temperature detecting module 20, processing module 30 and adjusting module 40.
Particularly, clock module 10 is clock circuit, and for generation of frequency of oscillation, this clock module 10 has power input and control end, and preferably, this clock module 10 is integrated in the chip.Said temperature detection module 20 comprises with the integrated chip applying or is arranged on integrated chip temperature inside transducer.This temperature detecting module 20 is used for detecting the temperature of clock module 10 in real time and being sent to processing module 30, the input of this processing module 30 is connected with the output of temperature detecting module 20, the output of processing module 30 is connected with the input of adjusting module 40, when receiving the temperature information of temperature detecting module 20 transmissions, this temperature value and default temperature value are analyzed, obtain analysis result then, send analysis result again to adjusting module 40; The input of above-mentioned adjusting module 40 is connected with the output of processing module 30, output is connected with the control end of clock module 10, after receiving analysis result, choose frequency preset according to analysis result and repair tone pitch, and repair tone pitch according to the frequency of choosing and regulate output frequency.Wherein, default temperature value and frequency preset are repaiied tone pitch and all are stored in the memory, when needing, can transfer from memory.
Above-mentioned processing module 30 is the arithmetic element (not shown), and this arithmetic element is used for described temperature detecting module 20 detected temperature and the temperature value of presetting are carried out subtraction, and sends result of calculation to described adjusting module 40.Wherein several result of calculations can be set in memory in advance as required, and each result of calculation all corresponding frequency preset repair tone pitch.Perhaps,
Above-mentioned processing module 30 is the comparing unit (not shown), and this comparing unit is used for described temperature detecting module 20 detected temperature and the temperature value of presetting are compared, and sends comparative result to described adjusting module 40.And, comparative result can be set in memory as required in advance, when detected temperature value during greater than default temperature value, send instruction to adjusting module 40, adjusting module 40 is regulated output frequency according to the default tone pitch of repairing.
With reference to Fig. 2, Fig. 2 is the structured flowchart of another embodiment of the utility model RC oscillator.
Based on first embodiment, be not subjected to the influence of outer power voltage fluctuation in order to prevent frequency of oscillation, also comprise the D.C. regulated power supply 50 that burning voltage is provided to clock module 10 in the present embodiment; Described clock module 10 also has a power input, and the power output end of described D.C. regulated power supply 50 is connected with the power input of clock module 10.50 outputs of this D.C. regulated power supply are stable, are not subject to temperature or external loading change in voltage and influence output accuracy.When the supply voltage of clock module 10 was stablized, frequency output also can settle out.
Further, described D.C. regulated power supply 50 is LDO low pressure source of stable pressure.This LDO low pressure source of stable pressure is a kind of low pressure difference linearity stabilized voltage power supply, and it is low to have a cost, and noise is low, and quiescent current is little, and output is stable, is not subject to the influence of temperature or external loading change in voltage.
With reference to Fig. 3, Fig. 3 is the structured flowchart of the another embodiment of the utility model RC oscillator.
Based on first embodiment, in order further to improve the influence that frequency of oscillation is not subjected to the outer power voltage fluctuation, also comprise the voltage detection module 60 of the supply voltage of real-time detection clock module 10 in the present embodiment; Described clock module 10 also has a tested voltage end, and the test side of described voltage detection module 60 is connected with the tested voltage end of clock module 10, and the output of clock module 10 is connected with the input of processing module 30.Detect the supply voltage of clock module 10 in real time and send to processing module 30 by voltage detection module 60, when processing module 30 receives the information of voltage of voltage detection module 60 transmissions, this magnitude of voltage and the magnitude of voltage of presetting are carried out subtraction, obtain voltage result of calculation then, send voltage result of calculation again to adjusting module 40; Wherein, default magnitude of voltage and frequency preset are repaiied tone pitch and all are stored in the memory, when needing, can transfer from memory.After receiving voltage result of calculation, choose frequency preset according to voltage result of calculation and repair tone pitch, and repair tone pitch according to the frequency of choosing and regulate output frequency.Wherein, several voltage result of calculations can be set in memory in advance as required, and each voltage result of calculation all corresponding frequency preset repair tone pitch.
Further, described voltage detection module 60 is RC oscillator supply voltage detecting circuit.This RC oscillator supply voltage detecting circuit is a kind of low-voltage detection circuit, can more accurately detect the fluctuation situation of the input supply voltage of clock module 10.
The utility model RC oscillator detects the temperature of clock module 10 in real time by temperature detecting module 20, processing module 30 is analyzed described temperature detecting module 20 detected temperature and default temperature value, and send analysis result to adjusting module 40, after adjusting module 40 receives analysis result, choosing frequency preset according to analysis result repaiies tone pitch and repaiies tone pitch according to the frequency chosen the output frequency of clock module 10 is carried out corresponding adjusting, thereby reduced the frequency output influence of external environment condition (as temperature) to the RC oscillator, guaranteed the frequency output accuracy of RC oscillator.
The above only is preferred embodiment of the present utility model; be not so limit claim of the present utility model; every equivalent structure or equivalent flow process conversion that utilizes the utility model specification and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present utility model.
Claims (9)
1. RC oscillator, comprise the clock module that produces frequency of oscillation, it is characterized in that, also comprise temperature detecting module, processing module and adjusting module, described clock module has a control end, and the output of described temperature detecting module is connected with the input of processing module, and the output of described processing module is connected with the input of adjusting module, the output of described adjusting module is connected with the control end of clock module, wherein:
Described temperature detecting module is used for the temperature of detection clock module in real time;
Described processing module is used for the detected temperature of described temperature detecting module and default temperature value are analyzed, and sends analysis result to described adjusting module;
Described adjusting module is used for after receiving analysis result, chooses frequency preset according to analysis result and repaiies tone pitch and repair tone pitch according to the frequency of choosing the output frequency of clock module is regulated accordingly.
2. RC oscillator according to claim 1, it is characterized in that, described processing module is arithmetic element, and this arithmetic element is used for the detected temperature of described temperature detecting module and the temperature value of presetting are carried out subtraction, and sends result of calculation to described adjusting module.
3. RC oscillator according to claim 1, it is characterized in that, described processing module is comparing unit, and this comparing unit is used for the detected temperature of described temperature detecting module and the temperature value of presetting are compared, and sends comparative result to described adjusting module.
4. RC oscillator according to claim 1 is characterized in that, described clock module is an integrated chip, and described temperature detecting module comprises with the integrated chip applying or is arranged on integrated chip temperature inside transducer.
5. RC oscillator according to claim 1 is characterized in that, described clock module is clock circuit.
6. RC oscillator according to claim 1 is characterized in that, also comprises the D.C. regulated power supply that burning voltage is provided to clock module; Described clock module also has a power input, and the power output end of described D.C. regulated power supply is connected with the power input of clock module.
7. RC oscillator according to claim 6 is characterized in that, described D.C. regulated power supply is LDO low pressure source of stable pressure.
8. RC oscillator according to claim 1 is characterized in that, also comprises the voltage detection module of the supply voltage of real-time detection clock module; Described clock module also has a tested voltage end, and the test side of described voltage detection module is connected with the tested voltage end of clock module.
9. RC oscillator according to claim 8 is characterized in that, described voltage detection module is RC oscillator supply voltage detecting circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320231100 CN203225723U (en) | 2013-04-28 | 2013-04-28 | Rc oscillator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320231100 CN203225723U (en) | 2013-04-28 | 2013-04-28 | Rc oscillator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203225723U true CN203225723U (en) | 2013-10-02 |
Family
ID=49252713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320231100 Expired - Lifetime CN203225723U (en) | 2013-04-28 | 2013-04-28 | Rc oscillator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203225723U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103281055A (en) * | 2013-04-28 | 2013-09-04 | 深圳市芯海科技有限公司 | RC (resistance-capacitance) oscillator |
-
2013
- 2013-04-28 CN CN 201320231100 patent/CN203225723U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103281055A (en) * | 2013-04-28 | 2013-09-04 | 深圳市芯海科技有限公司 | RC (resistance-capacitance) oscillator |
| CN103281055B (en) * | 2013-04-28 | 2016-09-07 | 深圳市芯海科技有限公司 | Rc oscillator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Bhatia et al. | Room temperature based fan speed control system using pulse width modulation technique | |
| CN205333824U (en) | Detecting system of linear motor | |
| WO2015085830A1 (en) | Apparatus for testing dynamic characteristics of electronic energy meter | |
| CN202522915U (en) | Data acquisition system based on vibration wire type sensor | |
| CN102857197B (en) | A kind of calibration steps improving built-in RC oscillator frequency precision | |
| CN105119587B (en) | A kind of magnetic loss automatically testing platform and its sinusoidal excitation signal source used | |
| CN203225723U (en) | Rc oscillator | |
| CN103281055A (en) | RC (resistance-capacitance) oscillator | |
| CN202182933U (en) | Low frequency numerical control signal-generator based on direct digital frequency synthesizer | |
| US9032129B2 (en) | Advanced energy profiler | |
| CN205643512U (en) | Frequency detecting system | |
| CN204993279U (en) | Waveform generator | |
| CN103697874A (en) | Digital drive loop control circuit for quartz tuning fork gyroscope | |
| CN115360979A (en) | 32.768k oscillator with low power consumption and high precision | |
| CN204631128U (en) | A kind of test circuit of resonance frequency | |
| CN204065387U (en) | A kind of synchronous demodulator and comprise the power standard source of this synchronous demodulator | |
| CN106468743A (en) | Pulse constant current diode forward pressure fall-off test instrument | |
| CN203337732U (en) | Electronic frequency counter | |
| CN207689578U (en) | Testing integrated device occurs for pulse signal | |
| US8320108B2 (en) | Power supply | |
| CN206258759U (en) | Voltage stable output device | |
| CN105699734A (en) | Device and method for detecting delay time of signal | |
| CN104104363A (en) | Function signal generator | |
| CN104215924A (en) | Synchronous demodulator, power standard source comprising synchronous demodulator and control method of power standard source | |
| US20150324017A1 (en) | Position indication device and position indication method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 518000, A building, block 9, garden city digital garden, 1079 Nanhai Road, Guangdong, Shenzhen, Nanshan District Patentee after: CHIPSEA TECHNOLOGIES (SHENZHEN) Corp. Address before: 518000 Guangdong city of Shenzhen province Nanshan District Nanhai Road No. 1079 Garden City digital building block A No. 901A Patentee before: SHENZHEN CHIPSEA TECHNOLOGIES CO.,LTD. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131002 |