CN208971780U - A kind of ultrasonic wave countdown circuit - Google Patents

Abstract

The utility model proposes a kind of ultrasonic wave countdown circuits, comprising: LM555 chip, the power circuit being attached with LM555 and the LM555 chip controlled circuit being attached and the second capacitor being attached with LM555 chip；One end of second capacitor is attached with the 5th foot of LM555 chip, the first foot of the other end and LM555 chip is attached；The power circuit is attached with the first foot of LM555 chip and to form first node, connect with the 4th foot of LM555 chip and to form the 5th node, connect with the crus secunda of LM555 chip and to form third node, be attached to form second node with the 6th foot of LM555 chip, whereby, the utility model has the advantages that avoid circuit excessively complexity, connection simple.

Description

A kind of ultrasonic wave countdown circuit

Technical field

The utility model belongs to the control field of ultrasonic wave transducer transmitting, in particular to a kind of ultrasonic wave emission control electricity Road.

Background technique

Currently, ultrasonic wave is a kind of sound wave of the frequency higher than 20000 hertz, its good directionality, penetration capacity is strong, is easy to The sound energy relatively concentrated is obtained, propagation distance is remote in water, can be used for ranging, tests the speed, cleans, welding, rubble, sterilizing etc.. In medicine, military affairs, industry, agriculturally there are many applications.Ultrasonic wave is gained the name because its lower-frequency limit is greater than the upper limit of hearing of people.

But the generation of ultrasonic wave is often sent ultrasonic waves into environment again using converting electrical energy into ultrasonic wave, Ultrasonic wave transmitting needs are attached with circuit to be just able to achieve, and during using ultrasonic wave embossed equal uses, is surpassed in factory Acoustic wave transducer is unsuitable too far at a distance from control chip or circuit, and circuit is unable to too complex, otherwise staff The more time can be expended during operation.

Therefore, it in view of above scheme in actual fabrication and in place of implementing using upper missing, and corrected, improved, together When in line with the spirit and theory asked, and by the knowledge of profession, the auxiliary of experience, and after multi-party clever thought, test, just found The utility model out, spy a kind of ultrasonic wave countdown circuit is provided again, it is excessively complicated for solving circuit, it has not been convenient to maintenance and The problem of connection installation.

Utility model content

The utility model proposes a kind of ultrasonic wave countdown circuit, solve in the prior art that circuit is excessively complicated, no The problem of facilitating maintenance and connection installation.

The technical solution of the utility model is achieved in that ultrasonic wave countdown circuit, comprising: LM555 chip, The power circuit that is attached with LM555, the controlled circuit being attached with LM555 chip and connected with LM555 chip The second capacitor connect；One end of second capacitor and the 5th foot of LM555 chip be attached, the other end and LM555 chip the One foot is attached；First foot of power circuit and LM555 chip is attached to form first node, the with LM555 chip Four feet connect and to form the 5th node, connect to form third node, the 6th foot with LM555 chip with the crus secunda of LM555 chip It is attached to form second node；The first end of controlled circuit and the 4th foot of LM555 chip be attached to be formed fourth node, The third foot of second end and LM555 chip is attached, third end and one end of the second capacitor are attached, LM555 chip Octal is attached with the 4th foot；Power circuit is also attached with fourth node.

As a preferred embodiment, power circuit includes that supply voltage and supply voltage anode are attached The cathode first capacitor being attached and the first resistor being attached with first capacitor of switch and supply voltage.

As a preferred embodiment, one end of switch and the anode of supply voltage are attached, the other end and the Four nodes are attached；The cathode of first capacitor one end and supply voltage is attached, the other end and LM555 chip the 6th Foot is attached to form second node；The cathode of supply voltage also is attached to form first segment with the first foot of LM555 chip Point；4th foot of first resistor one end and LM555 chip, which is attached, to be formed fourth node, the other end and second node and is connected It connects and is attached to form third node with the crus secunda of LM555 chip.

As a preferred embodiment, controlled circuit include the slide rheostat being attached with fourth node, with The second resistance and the ultrasonic transducer being attached with slide rheostat that slide rheostat is attached.

As a preferred embodiment, one end of slide rheostat and fourth node are attached, the other end and the Two resistance are attached；One end of second resistance is attached with the third foot and slide rheostat of LM555 chip respectively, is another End is attached with ultrasonic transducer；Ultrasonic transducer one end and second resistance be attached, the other end and first node It is attached with the second capacitor.

As a preferred embodiment, ultrasonic transducer uses T-40-16 type energy converter.

As a preferred embodiment, supply voltage is 9V.

As a preferred embodiment, first resistor use resistance value for 12 kilo-ohms resistance, second resistance using resistance Value is the resistance in 100 Europe.

As a preferred embodiment, the capacitance of first capacitor is 1 nanofarad, the capacitance of the second capacitor is 0.01 Microfarad.

After above-mentioned technical proposal, the beneficial effects of the utility model are:

1, avoid ultrasonic transducer and the connection of control chip and control circuit complex, the use of electronic component Excessive problem；

2, the connection of simplified control circuit and ultrasonic transducer, so that staff is during operation circuit connects The time expended is reduced, while avoiding the occurrence of damage of the operation error to control circuit in maintenance and replacement circuit component；

3, the component cost price used in circuit is lower, reduces the cost in factory's use process, avoids use Expensive electronic component bring estimated cost increases problem.

Detailed description of the invention

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is some embodiments of the utility model, for those of ordinary skill in the art, before not making the creative labor property It puts, is also possible to obtain other drawings based on these drawings.

Fig. 1 is the circuit diagram of the utility model.

In figure, K- switch；R1- first resistor；C1- first capacitor；LM555-LM555 chip；The first foot of 1-；2- second Foot；3- third foot；The 4th foot of 4-；The 5th foot of 5-；The 6th foot of 6-；8- octal；A- first node；B- second node；C- third Node；D- fourth node；The 5th node of e-；F- first end；H- second end；G- third end；S1- power circuit；The controlled electricity of S2- Road；RP- slide rheostat；R2- second resistance；The second capacitor of C2-；T-40-16- ultrasonic transducer.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts Every other embodiment obtained, fall within the protection scope of the utility model.

As shown in Figure 1, ultrasonic wave countdown circuit, comprising: LM555 chip, the power circuit being attached with LM555 The S1 and LM555 chip controlled circuit S2 being attached and the second capacitor C2 being attached with LM555 chip；Second electricity 5th foot 5 of one end and LM555 chip for holding C2 is attached, the first foot 1 of the other end and LM555 chip is attached；Electricity Source circuit S1 is attached with the first foot 1 of LM555 chip and to form first node a, connect shape with the 4th foot 4 of LM555 chip It connect at the 5th node e, with the crus secunda 2 of LM555 chip and to form third node c, connected with the 6th foot 6 of LM555 chip It connects to form second node b；The first end f of controlled circuit S2 and the 4th foot 4 of LM555 chip be attached to be formed fourth node d, The third foot 3 of second end h and LM555 chip is attached, third end g and one end of the second capacitor C2 are attached, LM555 The octal 8 of chip is attached with the 4th foot 4；Power circuit S1 is also attached with fourth node d.Power circuit S1 includes The first capacitor C1 that the cathode of supply voltage, the switch K being attached with supply voltage anode and supply voltage is attached with And the first resistor R1 being attached with first capacitor C1.One end of switch K and the anode of supply voltage be attached, the other end It is attached with fourth node d；The cathode of the one end first capacitor C1 and supply voltage is attached, the other end and LM555 chip The 6th foot 6 be attached to form second node b；The cathode of supply voltage is also attached shape with the first foot 1 of LM555 chip At first node a；4th foot 4 of the one end first resistor R1 and LM555 chip be attached to be formed fourth node d, the other end with Second node b is attached and is attached to form third node c with the crus secunda of LM555 chip 2.Controlled circuit S2 includes The slide rheostat RP that is attached with fourth node d, with the slide rheostat RP second resistance R2 being attached and with sliding The ultrasonic transducer T-40-16 that rheostat RP is attached.One end of slide rheostat RP and fourth node d be attached, The other end is attached with second resistance R2；One end of second resistance R2 becomes with the third foot 3 of LM555 chip and sliding respectively Device RP is attached, the other end and ultrasonic transducer T-40-16 are attached for resistance；The one end ultrasonic transducer T-40-16 with Second resistance R2 is attached, the other end and first node a and the second capacitor C2 are attached.Ultrasonic transducer T-40-16 Using T-40-16 type energy converter.Supply voltage is 9V.First resistor R1 uses resistance, second resistance R2 of the resistance value for 12 kilo-ohms Use resistance value for the resistance in 100 Europe.The capacitance of first capacitor C1 is 1 nanofarad, the capacitance of the second capacitor C2 is 0.01 microfarad. The working principle of the ultrasound wave transmitting circuit is: the oscillating impulse of the 40kHz exported from 3 foot of third foot of LM555 drives ultrasound Wave transducer T-40-16 work, is allowed to launch the ultrasonic signal of 40kHz, according to circuit connecting mode, the power supply electricity in figure Road S1 is that the operating voltage that entire ultrasonic wave transmitting circuit provides is 9V, and operating current is 40~45mA, and LM555 chip controls are super The command range of acoustic wave transducer T-40-16 is greater than 8m.

The above is only the preferred embodiments of the present utility model only, is not intended to limit the utility model, all practical at this Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model Within the scope of shield.

Claims (9)

1. a kind of ultrasonic wave countdown circuit characterized by comprising LM555 chip, the power supply being attached with LM555 Circuit and the LM555 chip controlled circuit being attached and the second capacitor being attached with LM555 chip；Described second 5th foot of one end of capacitor and LM555 chip is attached, the first foot of the other end and LM555 chip is attached；It is described Power circuit is attached with the first foot of LM555 chip and to form first node, connect to form with the 4th foot of LM555 chip Five nodes connect with the crus secunda of LM555 chip and to form third node, be attached to form the with the 6th foot of LM555 chip Two nodes；The first end of the controlled circuit and the 4th foot of LM555 chip be attached to be formed fourth node, second end with The third foot of LM555 chip is attached, third end and one end of the second capacitor are attached, and the 8th of the LM555 chip the Foot is attached with the 4th foot；The power circuit is also attached with fourth node.

2. ultrasonic wave countdown circuit according to claim 1, which is characterized in that the power circuit includes power supply electricity Pressure, the switch being attached with supply voltage anode, the first capacitor being attached with the cathode of supply voltage and with first The first resistor that capacitor is attached.

3. ultrasonic wave countdown circuit according to claim 2, which is characterized in that one end of the switch and power supply electricity The anode of pressure is attached, the other end and fourth node are attached；The cathode of described first capacitor one end and supply voltage into 6th foot of row connection, the other end and LM555 chip is attached to form second node；The cathode of the supply voltage also with First foot of LM555 chip is attached to form first node；4th foot of described first resistor one end and LM555 chip carries out Connection forms fourth node, the other end and second node and is attached and is attached to form the with the crus secunda of LM555 chip Three nodes.

4. ultrasonic wave countdown circuit according to claim 3, which is characterized in that the controlled circuit includes and the 4th It slide rheostat that node is attached, the second resistance being attached with slide rheostat and is attached with slide rheostat Ultrasonic transducer.

5. ultrasonic wave countdown circuit according to claim 4, which is characterized in that one end of the slide rheostat with Fourth node is attached, the other end and second resistance are attached；One end of the second resistance respectively with LM555 chip Third foot and slide rheostat are attached, the other end and ultrasonic transducer are attached；Described ultrasonic transducer one end It is attached with second resistance, the other end and first node and the second capacitor are attached.

6. ultrasonic wave countdown circuit according to claim 5, which is characterized in that the ultrasonic transducer uses T- 40-16 type energy converter.

7. ultrasonic wave countdown circuit according to claim 6, which is characterized in that the supply voltage is 9V.

8. ultrasonic wave countdown circuit according to claim 2, which is characterized in that the first resistor use resistance value for 12 kilo-ohms of resistance, second resistance use resistance value for the resistance in 100 Europe.

9. ultrasonic wave countdown circuit according to claim 2, which is characterized in that the capacitance of the first capacitor is 1 nanofarad, the capacitance of the second capacitor are 0.01 microfarad.