CN209264952U - A kind of ultrasonic distance-measuring alarming device - Google Patents
A kind of ultrasonic distance-measuring alarming device Download PDFInfo
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- CN209264952U CN209264952U CN201821426600.4U CN201821426600U CN209264952U CN 209264952 U CN209264952 U CN 209264952U CN 201821426600 U CN201821426600 U CN 201821426600U CN 209264952 U CN209264952 U CN 209264952U
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Abstract
A kind of ultrasonic distance-measuring alarming device, it include: single-chip minimum system, ultrasonic distance measuring module, drive module, display circuit, warning circuit, key circuit and power supply circuit, wherein the ultrasonic distance measuring module, display circuit, warning circuit and key circuit are connected with the single-chip microcontroller respectively；Drive module is connected by pull-up resistor module with the single-chip microcontroller.Utility model has the advantages that structure is simple, small power consumption, alarm distance can freely be set in its ranging range, and be shown by display module, since structure is simple, so its alarm time is short, be quick on the draw and relatively reliable.
Description
Technical field
The utility model relates to ultrasonic distance measurement fields to be used for more particularly to a kind of ultrasonic distance-measuring alarming device
Ultrasonic distance measurement alarm.
Background technique
The main reason for automobile collides is since automobile is away from its objects in front (such as automobile, pedestrian or other barriers)
Distance it is unbecoming with the speed of automobile itself caused by, i.e., distance is close and relative velocity is too high.Automobile is with before in order to prevent
Square object body collides, and the speed of automobile will be controlled according to the distance change with objects in front by executing agency, makes vapour
Vehicle is always in safe speed downward driving.The safety of running car, the generation to cut down traffic accidents can thus be greatly improved.
Develop automobile collision preventing technology, vehicle intellectualized level is significant to improving.According to statistics, when dangerous circumstances, such as
Fruit can give the pretreatment time of driver's half second, then can reduce the 30% of rear-end collision, the 50% of road surface related accidents respectively,
Head-on the 60% of car accident；And 1 second pre-warning time can prevent 90% rear-end impact and 60% head-on impact.
Automobile wants collision avoidance just must be by the distance of certain equipment measurement front obstacle, and feeds back to automobile rapidly,
With in the case where critical, a certain presetting operation such as emergency braking is carried out by alarm or automatically, to avoid due to driving
Traffic accident caused by member's fatigue, carelessness, false judgment.
Utility model content
The purpose of this utility model is achieved through the following technical solutions a kind of ultrasonic distance-measuring alarming device, comprising:
Single-chip minimum system, ultrasonic distance measuring module, drive module, display circuit, warning circuit, key circuit and power supply electricity
Road, wherein the ultrasonic distance measuring module, display circuit, warning circuit and key circuit respectively with single-chip microcontroller minimum system
Single-chip microcontroller in system is connected；Drive module is connected by pull-up resistor module with the single-chip microcontroller.
Preferably, the ultrasonic distance measuring module be HC-SR04 ultrasonic wave module, the single-chip microcontroller be 86C51 or
89C52 type single-chip microcontroller.
Preferably, the display circuit includes: multiple first triodes, multiple first current-limiting resistances and display module,
Wherein the display module is 7 sections of LED charactrons modules of 4 one；The base stage of the multiple first triode respectively with institute
It states multiple first current-limiting resistances to be connected, the emitter of the multiple first triode selects end phase with the position of the display module respectively
Even, the collector of the multiple first triode is connected with the control terminal of the drive module jointly.
It is furthermore preferred that the drive module is 74HC573 register module.
Preferably, the warning circuit includes buzzer, the second triode, second resistance, 3rd resistor and diode,
Wherein the first end of the buzzer is connected with electrical source voltage point, on the one hand the second end of the buzzer passes through the second electricity respectively
Resistance is connected with the cathode of diode with electrical source voltage point, is on the other hand connected with the emitter of the second triode, and the described 2nd 3
The collector of pole pipe is connected with ground potential points.
Preferably, first triode and second triode are 9012 type triodes.
Preferably, the key circuit includes multiple SW-PB type keys, wherein the first of the multiple SW-PB type key
End together ground potential points be connected, the second end of the multiple SW-PB type key respectively with the first clock pins of the single-chip microcontroller,
Second clock pin and third clock pins are connected.
Preferably, the power supply circuit includes: power module and switch module, wherein the of the DC power supplier
One pin is connected with the first pin of the swit switch module, the second pin and electrical source voltage point of the DC power supplier
It is connected, the second pin of the swit switch module is connected with ground potential points.
It is furthermore preferred that the switch module is swit module.
It is furthermore preferred that the power module is NN1-B3N DC power supplier.
Utility model has the advantages that structure is simple, small power consumption, alarm distance can freely be set in its ranging range
It is fixed, and shown by display module, since structure is simple, so its alarm time is short, it is quick on the draw and more may be used
It leans on.
Detailed description of the invention
By reading the following detailed description of the preferred embodiment, various other advantages and benefits are common for this field
Technical staff will become clear.The drawings are only for the purpose of illustrating a preferred embodiment, and is not considered as practical to this
Novel limitation.And throughout the drawings, the same reference numbers will be used to refer to the same parts.In the accompanying drawings:
Attached drawing 1 shows the structure composition figure of the utility model.
Attached drawing 2 shows a kind of ultrasonic distance-measuring alarming device circuit diagram of the utility model.
Attached drawing 3 shows the warning circuit work flow diagram of the utility model.
Attached drawing 4 shows the key circuit work flow diagram of the utility model.
Specific embodiment
The illustrative embodiments of the disclosure are more fully described below with reference to accompanying drawings.Although showing this public affairs in attached drawing
The illustrative embodiments opened, it being understood, however, that may be realized in various forms the disclosure without the reality that should be illustrated here
The mode of applying is limited.It is to be able to thoroughly understand the disclosure on the contrary, providing these embodiments, and can be by this public affairs
The range opened is fully disclosed to those skilled in the art.
As shown in Figure 1, the structure composition figure of the utility model, comprising: one-chip computer module, digital tube display module, ultrasound
Wave range finder module, buzzer warning module, key setup module, drive module and DC voltage-stabilizing module, wherein the number
Pipe display module, ultrasonic distance measuring module, buzzer warning module, key setup module, drive module and DC voltage-stabilizing mould
Block is connected with the one-chip computer module respectively.Wherein, ultrasonic distance measuring module is for emitting and/or receiving ultrasonic wave, thus right
The transmitting terminal of ultrasonic wave module is calculated to the distance between reflection object.The present invention will be carried out by circuit diagram below
It is further open.
It is illustrated in figure 2 a kind of ultrasonic distance-measuring alarming device circuit diagram of the utility model.A kind of ultrasound
Wave ranging warning device includes, single-chip minimum system, ultrasonic distance measuring module, drive module, display circuit, warning circuit,
Reset circuit, key circuit and power supply circuit, wherein the ultrasonic distance measuring module, display circuit, warning circuit, reset electricity
Road and key circuit are connected with the single-chip microcontroller respectively；Drive module is connected by pull-up resistor module with the single-chip microcontroller.
Specifically, the single-chip minimum system is serial using STC89C51 or STC89C52 series monolithic is core,
With multiple interfaces, its interface quantity can satisfy the control requirement of the utility model, and 89C system on the basis of low price
Column single-chip microcontroller technology maturation keeps its control more reliable and more stable.
The display circuit includes: multiple first triodes, multiple first current-limiting resistances and display module, wherein described
Display module is 7 sections of LED charactrons modules of 4 one；The base stage of the multiple first triode is respectively with the multiple
One current-limiting resistance is connected, and the emitter of the multiple first triode selects end to be connected with the position of the display module respectively, described
The collector of multiple first triodes is connected with the control terminal of the drive module jointly.Wherein, due to being adopted in the utility model
With the display module of 4 integral types, therefore, corresponding to its multiple first triodes and the number of multiple first current resistors is 4
A, 4 the first triodes are driven for position as driving unit, 4 the first current-limiting resistances, 4 with the single-chip microcontroller respectively
User terminal pin P10, P11, P12 and P13 are connected.7 sections of LED charactrons modules of 4 one, for controlling display,
Alarm distance is such as set.In upper number connection composition, the drive module is 74HC573 register module, and input terminal 1D is arrived
8D passes through pull-up resistor respectively and is connected with P00 to the P07 pin of the single-chip microcontroller, and output end 1Q to 8Q passes through 8 limits respectively
The a of leakage resistance and display module, b, c, d, e, f, g pin and dp pin are connected, for controlling light-emitting diodes in display module
Pipe is lighted.
The warning circuit includes buzzer, the second triode, second resistance, 3rd resistor and diode, wherein institute
The first end for stating buzzer is connected with electrical source voltage point, the second end of the buzzer on the one hand respectively by the resistance of the second fulgurite with
The cathode of second level is connected with electrical source voltage point, is on the other hand connected with the emitter of the second triode, second triode
Collector is connected with ground potential points.Wherein, the base stage of second triode is connected with user's pin P20 of the single-chip microcontroller,
Its effect is that, since the electric current of single-chip microcontroller I/O pin output is smaller, the Transistor-Transistor Logic level of single-chip microcontroller output does not drive buzzer, because
This needs to increase the circuit of a Current amplifier, i.e., amplifies driving buzzer by a PNP type triode 9012.It is above-mentioned
In, first triode and second triode are 9012 type triodes.
The key circuit includes multiple SW-PB type keys, wherein one end of the multiple SW-PB type key is electric together
Gesture point be connected, the other end respectively with the first clock pins of the single-chip microcontroller, second clock pin and third clock pins phase
Even.Wherein, the SW-PB type key is free-standing key, its advantage is that its connection and control program are simple, control error rate
It is lower.The working principle of the key circuit is: using the level height of single-chip processor i/o mouth reading-port to determine whether there is key to press
Under.The first end of normally opened key is grounded, second end connects the I/O mouth of single-chip microcontroller, will be connected with key second end when program starts
I/O mouth be placed in high level, then without key pressing when I/O mouthfuls of protection high level.When a key is pressed, compel with ground short circuit for this I/O mouthfuls
Making I/O mouthfuls is low level.After key release, the pull-up resistor inside single-chip microcontroller makes I/O mouthfuls to still maintain high level.This is practical new
Realize control functions using 3 SW-PB keys in type, wherein the second end of 3 SW-PB keys respectively with the single-chip microcontroller
P14, P15 and P16 pin are connected.
The power supply circuit includes: power module and switch module, wherein the first pin of the DC power supplier
It is connected with the first pin of the swit switch module, the second pin of the DC power supplier is connected with electrical source voltage point,
The second pin of the swit switch module is connected with ground potential points.Wherein the switch module is power supply mould described in SWIT module
Block is NN1-B3N DC power supplier.
The ultrasonic distance measuring module uses HC-SR04 ultrasonic wave module, which can provide the non-of 2cm-400cm
Contact distance sensing function, range accuracy can reach 3mm.Its working principle is that: its transmitter, which can be launched, on one side is about
6mm, frequency are the ultrasonic signal of 40khz, which is reflected by the object is received by it head reception back, and the reception head is substantial
It is a kind of energy converter of piezoelectric effect.Its weak voltage signals for receiving mV grades of generation after signal.Ultrasonic listening module includes
VCC pin, GND pin, TRIG Trig control signal input pin and ECH0 response signal output pin, and touched by I/O port
Hair.Wherein, the Trig pin is used to generate ultrasonic pulse by the high level triggering of 10us or more, the ultrasonic wave generated
Pulse is the square wave of 8 40Khz, by having detected whether signal return；If there is signal return, ECH0 exports a high level,
High level duration is exactly ultrasonic wave from the time for being emitted to return, therefore can obtain its measuring distance=(high level time *
340)/2, unit m.The calculating process is completed by single-chip microcontroller, and be can be set and shown by display module.It is practical at this
Novel middle TRIG Trig control signal input pin and ECH0 response signal output pin, respectively with the INT0 of the single-chip microcontroller
It is connected with two interrupt pins of INT1.
As shown in figure 3, being the warning circuit work flow diagram of the utility model.After opening utility model device, monolithic
Whether the distance of reaction that machine detects current ultrasonic range finder module automatically exceeds preset alarm value, if not exceeded, then continuing to test；
If exceeding preset alarm value, controlling the P20 pin by the single-chip microcontroller is high level, so that the second triode is cut
Only, supply voltage passes through the second current-limiting resistance load buzzer both ends, trigger sounding alarm at this time.
As shown in figure 4, being the key circuit work flow diagram of the utility model.By taking the process for controlling alarm distance as an example,
When pressing the first key for the first time, the lower limit of alarm distance can be configured by the identification of single-chip microcontroller, and pass through second
Key and third key realize increasing or decreasing for alarm distance lower limit setting, when pressing the first key again, exit setting.
Wherein the control function of first key, the second key and third key can be freely arranged.
It is only to distinguish in different function circuit it should be noted that first, second having no essential meaning in the utility model
Same names device or same functional circuit in same names device.
The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not
It is confined to this, anyone skilled in the art within the technical scope disclosed by the utility model, can readily occur in
Change or replacement, should be covered within the scope of the utility model.Therefore, the protection scope of the utility model should be with
Subject to the scope of protection of the claims.
Claims (10)
1. a kind of ultrasonic distance-measuring alarming device characterized by comprising
Single-chip minimum system, ultrasonic distance measuring module, drive module, display circuit, warning circuit, key circuit and power supply
Circuit, wherein the ultrasonic distance measuring module, display circuit, warning circuit and key circuit are minimum with the single-chip microcontroller respectively
Single-chip microcontroller in system is connected；Drive module is connected by pull-up resistor module with the single-chip microcontroller.
2. ultrasonic distance-measuring alarming device according to claim 1, which is characterized in that the ultrasonic distance measuring module is
HC-SR04 ultrasonic wave module, the single-chip microcontroller are 86C51 or 89C52 type single-chip microcontroller.
3. ultrasonic distance-measuring alarming device according to claim 1, which is characterized in that the display circuit includes: multiple
First triode, multiple first current-limiting resistances and display module, wherein the display module is 7 sections of LED numbers of 4 one
Tube module；The base stage of the multiple first triode is connected with the multiple first current-limiting resistance respectively, and the multiple 1st
The emitter of pole pipe selects end to be connected with the position of the display module respectively, and the collector of the multiple first triode is jointly and institute
The control terminal for stating drive module is connected.
4. ultrasonic distance-measuring alarming device according to claim 3, which is characterized in that the drive module is 74HC573
Register module.
5. ultrasonic distance-measuring alarming device according to claim 4, which is characterized in that the warning circuit includes buzzing
Device, the second triode, second resistance, 3rd resistor and diode, wherein the first end of the buzzer and electrical source voltage point
It is connected, on the one hand the second end of the buzzer is connected by second resistance with the cathode of diode with electrical source voltage point respectively,
On the other hand it is connected with the emitter of the second triode, the collector of second triode is connected with ground potential points.
6. ultrasonic distance-measuring alarming device according to claim 5, which is characterized in that first triode and described
Two triodes are 9012 type triodes.
7. ultrasonic distance-measuring alarming device according to claim 1, which is characterized in that the key circuit includes multiple
SW-PB type key, wherein ground potential points are connected the first end of the multiple SW-PB type key together, the multiple SW-PB type is pressed
The second end of key is connected with the first clock pins of the single-chip microcontroller, second clock pin and third clock pins respectively.
8. ultrasonic distance-measuring alarming device according to claim 1, which is characterized in that the power supply circuit includes: power supply
Module and switch module, wherein the first pin of the power module is connected with the first pin of the switch module, it is described
The second pin of power module is connected with electrical source voltage point, and the second pin of the switch module is connected with ground potential points.
9. ultrasonic distance-measuring alarming device according to claim 8, which is characterized in that the switch module is SWIT mould
Block.
10. ultrasonic distance-measuring alarming device according to claim 8, which is characterized in that the power module is NN1-B3N
DC power supplier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821426600.4U CN209264952U (en) | 2018-08-31 | 2018-08-31 | A kind of ultrasonic distance-measuring alarming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821426600.4U CN209264952U (en) | 2018-08-31 | 2018-08-31 | A kind of ultrasonic distance-measuring alarming device |
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| Publication Number | Publication Date |
|---|---|
| CN209264952U true CN209264952U (en) | 2019-08-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821426600.4U Expired - Fee Related CN209264952U (en) | 2018-08-31 | 2018-08-31 | A kind of ultrasonic distance-measuring alarming device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108983244A (en) * | 2018-09-30 | 2018-12-11 | 深圳市陀罗尼教育科技有限公司 | A kind of Ultrasonic Range Finder for Parking auxiliary system |
-
2018
- 2018-08-31 CN CN201821426600.4U patent/CN209264952U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108983244A (en) * | 2018-09-30 | 2018-12-11 | 深圳市陀罗尼教育科技有限公司 | A kind of Ultrasonic Range Finder for Parking auxiliary system |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| 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: 20190816 Termination date: 20200831 |