CN203117423U - Ultrasonic wave proximity detection module - Google Patents
Ultrasonic wave proximity detection module Download PDFInfo
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- CN203117423U CN203117423U CN 201320091358 CN201320091358U CN203117423U CN 203117423 U CN203117423 U CN 203117423U CN 201320091358 CN201320091358 CN 201320091358 CN 201320091358 U CN201320091358 U CN 201320091358U CN 203117423 U CN203117423 U CN 203117423U
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Abstract
The utility model relates to an ultrasonic wave proximity detection module comprising a main control circuit, wherein a signal input end of the main control circuit is connected with an output end of a sound wave receiving circuit, and a signal output end of the main control circuit is respectively connected with an input end of a sound wave generating circuit and an input end of an execution circuit. By means of the main control circuit, frequency modulation of ultrasonic wave signals is finished. After ultrasonic echo signals are received, filtering, signal reorganization and distance calculation are carried out, and then the execution circuit carries out corresponding motions to finish corresponding work requirements. The detection distance of the ultrasonic wave proximity detection module is 3-5m and precision is 1cm. An ultrasonic wave receiving chip is adopted, the ultrasonic wave proximity detection module is more reliable compared with a circuit of a discrete component, and cost is low.
Description
Technical field
The utility model relates to a kind of ultrasound wave and closely feels detecting module.
Background technology
Existing missile-borne has multiple modes such as radio, light, sound, magnetic, electric capacity apart from detecting module, as the missile-borne module, it is little to satisfy volume, and can finish the in-plant measurement of 3～5m, and cost is low.In the above-mentioned multiple mode, the missile-borne module volume that wireless system is realized is too big, can't satisfy the installation requirement under some situation; The measuring distance of light is far away and cost is higher; Magnetic only is applicable to the detection of some metal object; The precision height of electric capacity, but detection range is too near.As seen, all be difficult to satisfy proximity detection demand cheaply with upper type.
The utility model content
The purpose of this utility model is to provide that a kind of volume is little, cost is low, high precision, can realize that the ultrasound wave of proximity detection closely feels detecting module.
For achieving the above object, the utility model has adopted following technical scheme: a kind of ultrasound wave is closely felt detecting module, comprise governor circuit, its signal input part links to each other with the output terminal of sound wave receiving circuit, and its signal output part links to each other with the input end of sound wave generation circuit, executive circuit respectively.
Described governor circuit adopts the C8051F330 single-chip microcomputer, and its 1st, 20 pin links to each other with the input end that sound wave produces circuit, and its 17th pin links to each other with the input end of executive circuit, and its 12nd, 11,10,13 pin links to each other with the output terminal of sound wave receiving circuit.
Described sound wave produces circuit and comprises metal-oxide-semiconductor Q1, its grid links to each other with the 20th pin of C8051F330 single-chip microcomputer, its source ground, its drain electrode links to each other with an end of resistance R 5, resistance R 5 is connected with resistance R 3, the other end of resistance R 3 links to each other with the collector of triode Q2, the emitter of triode Q2 links to each other with the primary coil of transformer T1, the secondary coil of transformer T1 links to each other with ultrasonic transducer by capacitor C 8, and the base stage of triode Q2 links to each other with the 1st pin of C8051F330 single-chip microcomputer by resistance R 4.
Described executive circuit comprises triode Q3, its base stage links to each other by an end of resistance R 9, the other end of resistance R 9 and C8051F330 single-chip microcomputer 17 pins link to each other, the emitter of triode Q3 connects the 3.3V direct current, the collector of triode Q3 links to each other with an end of resistance R 20, the other end of resistance R 20 extremely links to each other with the control of thyristor Q4, the plus earth of thyristor Q4, the anode of thyristor Q4 links to each other with an end of resistance R 8, the other end of resistance R 8 links to each other with the negative electrode of diode D9, the end of the other end of resistance R 8 and storage capacitor C16, and the other end of storage capacitor C16 is as output terminal, one end ground connection of resistance R 11, the other end of resistance R 11 is as output terminal.
Described sound wave receiving circuit comprises the TL852 chip, its the 12nd, 13,14,15 pin links to each other with the 12nd, 11,10,13 pins of C8051F330 single-chip microcomputer respectively, its the 1st pin links to each other with an end of resistance R 15, the other end of resistance R 15 links to each other with the 2nd pin of TL852 chip, and the 2nd pin of TL852 chip links to each other with the primary coil of transformer T1.
As shown from the above technical solution, the utility model is finished the frequency modulation (PFM) of ultrasonic signal by governor circuit, after receiving the ultrasonic echo signal, carry out the identification of filtering, signal, distance is resolved, and carries out corresponding action by executive circuit then, finishes the relevant work requirement.Detection range of the present utility model reaches 3～5m, and precision is 1cm; Adopt the ultrasound wave receiving chip, more reliable than the circuit of discrete element, cost is lower.
Description of drawings
Fig. 1 is circuit block diagram of the present utility model;
Fig. 2,3,4,5 is the circuit theory diagrams that sound wave produces circuit, sound wave receiving circuit, governor circuit and executive circuit in the utility model;
Fig. 6 is the workflow diagram of governor circuit in the utility model.
Embodiment
A kind of ultrasound wave is closely felt detecting module, comprises governor circuit 3, and its signal input part links to each other with the output terminal of sound wave receiving circuit 2, and its signal output part links to each other with the input end of sound wave generation circuit 1, executive circuit 4 respectively.Described governor circuit 3 adopts the C8051F330 single-chip microcomputer, its the 1st, 20 pin links to each other with the input end that sound wave produces circuit 1, its the 17th pin links to each other with the input end of executive circuit 4, and its 12nd, 11,10,13 pin links to each other with the output terminal of sound wave receiving circuit 2.Shown in Fig. 1,4.The C8051F330 single-chip microcomputer is finished various work voluntarily by burned program after powering on, as frequency monitoring, generation certain frequency square wave, gain adjustment, distance calculating etc., specifically workflow is seen Fig. 6.
As shown in Figure 2, described sound wave produces circuit 1 and comprises metal-oxide-semiconductor Q1, its grid links to each other with the 20th pin of C8051F330 single-chip microcomputer, its source ground, its drain electrode links to each other with an end of resistance R 5, resistance R 5 is connected with resistance R 3, the other end of resistance R 3 links to each other with the collector of triode Q2, the emitter of triode Q2 links to each other with the primary coil of transformer T1, the secondary coil of transformer T1 links to each other with ultrasonic transducer by capacitor C 8, and the base stage of triode Q2 links to each other with the 1st pin of C8051F330 single-chip microcomputer by resistance R 4.The square-wave signal that the C8051F330 single-chip microcomputer produces 40KHZ passes through send_ctrl, the grid of metal-oxide-semiconductor Q1 input just, C8051F330 Single-chip Controlling metal-oxide-semiconductor Q1 comes switch with the frequency of 40KHZ, produce the AC signal of 5V, a 40KHZ on the former limit of transformer T1, the former limit of transformer T1 and the turn ratio of secondary are 1:10, therefore produce the AC signal of 70V, a 40KHz at secondary, this AC signal is through ultrasonic transducer, electric signal is converted to mechanical vibration, sends the ultrasonic signal of 40KHz.
As shown in Figure 5, described executive circuit 4 comprises triode Q3, its base stage links to each other by an end of resistance R 9, the other end of resistance R 9 and C8051F330 single-chip microcomputer 17 pins link to each other, the emitter of triode Q3 connects the 3.3V direct current, the collector of triode Q3 links to each other with an end of resistance R 20, the other end of resistance R 20 extremely links to each other with the control of thyristor Q4, the plus earth of thyristor Q4, the anode of thyristor Q4 links to each other with an end of resistance R 8, the other end of resistance R 8 links to each other with the negative electrode of diode D9, the end of the other end of resistance R 8 and storage capacitor C16, the other end of storage capacitor C16 is as output terminal, an end ground connection of resistance R 11, and the other end of resistance R 11 is as output terminal.When this module receives echoed signal, and after calculating distance, the C8051F330 single-chip microcomputer starts executive circuit 4, and the 17th pin control triode Q3 of C8051F330 single-chip microcomputer is as switching signal, simultaneously, in case the characteristic of thyristor Q4 is to open and have the pressure drop of forward, no matter the G utmost point is high level or low level, thyristor Q4 can not close, and this has just guaranteed in case trigger pip is arranged, storage capacitor C16 just can form stable discharge loop by thyristor Q4, starts HGP1 and HGP2.
As shown in Figure 3, described sound wave receiving circuit 2 comprises the TL852 chip, its the 12nd, 13,14,15 pin links to each other with the 12nd, 11,10,13 pins of C8051F330 single-chip microcomputer respectively, its the 1st pin links to each other with an end of resistance R 15, the other end of resistance R 15 links to each other with the 2nd pin of TL852 chip, and the 2nd pin of TL852 chip links to each other with the primary coil of transformer T1.The TL852 chip is the ultrasound wave receiving chip, the ultrasonic signal that ultrasonic transducer receives is Re input TL852 chip by the secondary of transformer T1, the GCA of TL852 chip, GCB, GCC, GCD are that software is adjusted receiving gain, produced by governor circuit 3, by calculate that ultrasound wave transmits and the ultrasonic echo signal between mistiming just calculate distance between this module and the object being measured.
As shown in Figure 6, the C8051F330 single-chip microcomputer produces the switching signal of certain frequency, produces ultrasonic signal more than the 100V by transformer T1, drives ultrasonic transducer; After sending, runs into ultrasound wave the object reflection, by being input to the TL852 chip after the Re reception, GCA, GCB, GCC, the GCD that software arranges the TL852 chip regulates the receiving gain of this chip, through discernible pulse signal of outputs such as filtering, amplification, integral transformation; The C8051F330 single-chip microcomputer is by calculate the mistiming of the switching signal begin to launch and the pulse signal that receives most, draw and reflecting object between distance, if this distance value during less than the value that presets, starts executive circuit 4, finish follow-up work.
In sum, the utility model is finished the frequency modulation (PFM) of ultrasonic signal by governor circuit 3, carries out filtering, signal identification, distance and resolve after receiving the ultrasonic echo signal, carries out corresponding action by executive circuit 4 then, finishes the relevant work requirement.Detection range of the present utility model reaches 3～5m, and precision is 1cm; Adopt the ultrasound wave receiving chip, more reliable than the circuit of discrete element, cost is lower.
Claims (5)
1. a ultrasound wave is closely felt detecting module, it is characterized in that: comprise governor circuit (3), its signal input part links to each other with the output terminal of sound wave receiving circuit (2), and its signal output part links to each other with the input end of sound wave generation circuit (1), executive circuit (4) respectively.
2. ultrasound wave according to claim 1 is closely felt detecting module, it is characterized in that: described governor circuit (3) adopts the C8051F330 single-chip microcomputer, its the 1st, 20 pin links to each other with the input end that sound wave produces circuit (1), its the 17th pin links to each other with the input end of executive circuit (4), and its 12nd, 11,10,13 pin links to each other with the output terminal of sound wave receiving circuit (2).
3. ultrasound wave according to claim 2 is closely felt detecting module, it is characterized in that: described sound wave produces circuit (1) and comprises metal-oxide-semiconductor Q1, its grid links to each other with the 20th pin of C8051F330 single-chip microcomputer, its source ground, its drain electrode links to each other with an end of resistance R 5, resistance R 5 is connected with resistance R 3, the other end of resistance R 3 links to each other with the collector of triode Q2, the emitter of triode Q2 links to each other with the primary coil of transformer T1, the secondary coil of transformer T1 links to each other with ultrasonic transducer by capacitor C 8, and the base stage of triode Q2 links to each other with the 1st pin of C8051F330 single-chip microcomputer by resistance R 4.
4. ultrasound wave according to claim 2 is closely felt detecting module, it is characterized in that: described executive circuit (4) comprises triode Q3, its base stage links to each other by an end of resistance R 9, the other end of resistance R 9 and C8051F330 single-chip microcomputer 17 pins link to each other, the emitter of triode Q3 connects the 3.3V direct current, the collector of triode Q3 links to each other with an end of resistance R 20, the other end of resistance R 20 extremely links to each other with the control of thyristor Q4, the plus earth of thyristor Q4, the anode of thyristor Q4 links to each other with an end of resistance R 8, the other end of resistance R 8 links to each other with the negative electrode of diode D9, the end of the other end of resistance R 8 and storage capacitor C16, the other end of storage capacitor C16 is as output terminal, an end ground connection of resistance R 11, and the other end of resistance R 11 is as output terminal.
5. ultrasound wave according to claim 3 is closely felt detecting module, it is characterized in that: described sound wave receiving circuit (2) comprises the TL852 chip, its the 12nd, 13,14,15 pin links to each other with the 12nd, 11,10,13 pins of C8051F330 single-chip microcomputer respectively, its the 1st pin links to each other with an end of resistance R 15, the other end of resistance R 15 links to each other with the 2nd pin of TL852 chip, and the 2nd pin of TL852 chip links to each other with the primary coil of transformer T1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320091358 CN203117423U (en) | 2013-02-28 | 2013-02-28 | Ultrasonic wave proximity detection module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320091358 CN203117423U (en) | 2013-02-28 | 2013-02-28 | Ultrasonic wave proximity detection module |
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| CN203117423U true CN203117423U (en) | 2013-08-07 |
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| CN 201320091358 Expired - Fee Related CN203117423U (en) | 2013-02-28 | 2013-02-28 | Ultrasonic wave proximity detection module |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110703235A (en) * | 2019-10-29 | 2020-01-17 | 南京俊禄科技有限公司 | Ultrasonic measurement system and method thereof |
-
2013
- 2013-02-28 CN CN 201320091358 patent/CN203117423U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110703235A (en) * | 2019-10-29 | 2020-01-17 | 南京俊禄科技有限公司 | Ultrasonic measurement system and method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wang Feifei Inventor before: Wang Mao |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: WU TAO TO: JIANG CHANGSHENG |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130807 Termination date: 20190228 |