CN107037767A - A kind of elevator door safety real-time control apparatus based on embedded Bluetooth ranging - Google Patents
A kind of elevator door safety real-time control apparatus based on embedded Bluetooth ranging Download PDFInfo
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/048—Monitoring; Safety
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V11/00—Prospecting or detecting by methods combining techniques covered by two or more of main groups G01V1/00 - G01V9/00
Abstract
The present invention relates to a kind of elevator door safety real-time control apparatus based on embedded Bluetooth ranging, belong to safety control technology field.Bluetooth module of the present invention is connected with measuring circuit, measuring circuit is connected with A/D change-over circuits, A/D change-over circuits are connected with power amplification circuit I, power amplification circuit I is connected with single chip control module I, single chip control module I is connected with display module, warning device I respectively, power supply I is connected with bluetooth module, single chip control module I, warning device I respectively, constitutes bluetooth range finder module；Infrared induction circuit is connected with power amplification circuit II, and power amplification circuit II is connected with single chip control module II, and single chip control module II is connected with warning device II.The present invention is simple in construction, it is flexible, with low cost, environmental and durable to operate, and the life security to resident plays preferable protective effect.
Description
Technical field
The present invention relates to a kind of elevator door safety real-time control apparatus based on embedded Bluetooth ranging, belong to security control
Technical field.
Background technology
With the high speed development of urbanization, modern urban planning puts space planning an important position, is
It is sufficient to utilize limited space resources, skyscraper is built, elevator is undoubtedly the unique selection for solving wherein transportation problem.
Elevator invention has more than 100 years so far, and the scale used grows steadily, while realizing convenient and swift, accident also with
Generation, according to being shown both at home and abroad about the statistics of elevator accident：In existing elevator accident, 80% above is due to the Room
Door system is broken down or repaired caused by lost article, illustrates hoistway door as accident severely afflicated area, it is necessary to cause the height of correlation
Pay attention to.
The content of the invention
The technical problem to be solved in the present invention is：The present invention provides a kind of elevator door safety based on embedded Bluetooth ranging
Real-time control apparatus, for solving the elevator accident that car arrive designated floor and hall door opening is caused.
The technical scheme is that：A kind of elevator door safety real-time control apparatus based on embedded Bluetooth ranging, including
Bluetooth module 1, measuring circuit 2, A/D change-over circuits 3, power amplification circuit I 4, single chip control module I 5, display module 6, report
Alarm device I 7, power supply I 8, infrared induction circuit 9, power amplification circuit II 10, single chip control module II 11, warning device II
12nd, power supply II 13, hoistway door lock device 14；Wherein, bluetooth module 1 is connected with measuring circuit 2, and measuring circuit 2 and A/D is changed
Circuit 3 is connected, and A/D change-over circuits 3 are connected with power amplification circuit I 4, power amplification circuit I 4 and single chip control module
I 5 are connected, and single chip control module I 5 is connected with display module 6, warning device I 7 respectively, power supply I 8 respectively with bluetooth mould
Block 1, single chip control module I 5, warning device I 7 are connected, and constitute bluetooth range finder module；Infrared induction circuit 9 is put with power
Big circuit II 10 is connected, and power amplification circuit II 10 is connected with single chip control module II 11, single chip control module II
11 are connected with warning device II 12, and power supply II 13 is filled with infrared induction circuit 9, single chip control module II 11, alarm respectively
Put II 12 to be connected, constitute infrared induction module；Bluetooth range finder module and infrared induction module respectively with hoistway door lock device 14
It is connected.
The bluetooth module 1 includes：Chip CC2541, resistance R1, electric capacity C1, C2, C3, C4, C5, C6, C7, C8, C9,
C10, crystal oscillator Y1, Y2, inductance L1, L2, L3；Wherein, chip CC2541 pin 32,33 is connected with electric capacity C1, C2 respectively, brilliant
The Y1 that shakes is connected between C1, C2, and pin 40 is connected with electric capacity C3, and pin 22,23 is connected with electric capacity C4, C5 respectively, and crystal oscillator Y2 is connected on
Between C4, C5, electric capacity C6, C7 series connection, electric capacity C8 connect with inductance L2, are connected respectively with chip CC2541 pins 25,26, inductance
L1 is connected between electric capacity C6, C7, and electric capacity C9 is connected between electric capacity C8 and inductance L2 and is grounded, and inductance L3 is connected on electric capacity C7 and electricity
Between sense L2 and by being grounded after C10.
The power amplification circuit I 4 includes：Operational amplifier Op1, Op2, resistance R2, R3, R4, R5, R6, R7, electric capacity
C11、C12、C13、C14、C15、C16、C17、C18、C19；Wherein resistance R3 one termination input signal INPUT, the other end with
Operational amplifier Op1 positive pole connection, resistance R2 one end ground connection other end and Op1 negative pole are connected, and electric capacity C11, C12 are parallel
Op1 upper end pin access is connected through, electric capacity C13, C14 access Op1 lower end pin parallel, and variable resistor R4 is connected on Op1
Negative pole and output port between, electric capacity C15 is in parallel with resistance R5 and is serially connected in Op1 output end, and is connected to operational amplifier
Op2 positive pole, Op2 negative pole access -15V voltages, electric capacity C16, C17 parallel connection access Op2 lower end pin, electric capacity C18, C19
Parallel connection access Op2 upper end pin, Op2 output end is concatenated with resistance R6, R7, resistance R7 other end ground connection.
The infrared induction circuit 9 includes：Probe, electric capacity C20, C21, C22, C23, C24, C25, C26, resistance R8, R9,
R10, R11, R12, R13, R14, R15, R16, R17, operational amplifier Op3, Op4, triode Q3, Q4, Q5, diode D1；Its
In, electric capacity C20 one end is connected with probe positive pole, other end ground connection, electric capacity C21 one end and operational amplifier Op3 negative pole
Connection, the other end is connected with electric capacity C22 is connected to the negative pole end of probe, and resistance R8, R9 are connected in parallel on triode Q1 colelctor electrode,
Resistance R8 one end is connected with triode Q1 base stage, and Q1 emitter stages connect the negative pole of probe；Resistance R10 and electric capacity C23 series connections
To operational amplifier Op3 positive terminal, resistance R11 is connected between Op3 output end and resistance R10, electric capacity C24 and resistance R11
Parallel connection is equally connected between Op3 output ends and resistance R10；Operational amplifier Op3 output end and Op4 negative pole are connected, variable
Resistance R12 is connected between the both positive and negative polarity of probe, and extends the positive pole that branch is linked into Op4；Resistance R13 is connected on operational amplifier
Between Op4 output end and triode Q2 base stage, resistance R14 and Q2 colelctor electrode connection, and diode D1 is connected on probe
Between positive pole and resistance R14, triode Q3 emitter stage and Q2 base stage are connected, and Q3 base stage is connected with resistance R17, electric capacity
C26, resistance R15, R16 are connected in series.
The single chip control module I 5 includes chip AT89C52, resistance R18, button K1, electric capacity C27, C28, C29, crystalline substance
Shake Y3；Described display module 6 includes chip LCD1602, cloudy row；The warning device I 7 include resistance R19, triode Q4,
Loudspeaker；Wherein, chip AT89C52 pin 18,19 is connected with electric capacity C27, C28 respectively, crystal oscillator Y3 be connected on pin 18,19 it
Between, electric capacity C27, C28 other end series connection ground connection；Chip AT89C52 pins 9 are connected with electric capacity C29, key switch K1 and electric capacity
C29 is in parallel and connects and composes reset circuit with resistance R18；The series connection ground connection of chip LCD1602 pins 1,2,3, chip LCD1602 pipes
Pin 4,5,6 is connected with chip AT89C52 pin 21,22,23 respectively, and chip AT89C52 pin 32 to 39 is cloudy with row respectively
Pin 1 to 8 be connected；Resistance R19 is connected and is connected in triode Q4 base stage with chip AT89C52 pin 25, raises one's voice
One end of device and Q4 emitter stage are connected, other end ground connection.
The present invention calculates distance of the car apart from each layer using bluetooth module real-time reception signal analysis, then by infrared
Sensor circuit carries out car and confirmed in place, it is ensured that car does not arrive designated floor, the failure that hall door will not be opened.
The beneficial effects of the invention are as follows：The present invention is simple in construction, it is flexible, with low cost, environmental and durable to operate, to resident's
Life security plays preferable protective effect, can be accurately positioned the position of lift car by bluetooth module ranging, in addition red
The use of outer sensor circuit, constitutes the determination dual fail-safe of car position, it is ensured that be not turned on hall door less than designated floor in car, be
Sound assurance is made in the personal safety of user.
Brief description of the drawings
Fig. 1 is the overall structure connection block diagram of the present invention；
Fig. 2 is the ranging schematic diagram of the present invention；
Fig. 3 is the bluetooth module circuit diagram of the present invention；
Fig. 4 is the circuit diagram of power amplification circuit I of the present invention；
Fig. 5 is the infrared induction circuit diagram of the present invention；
Fig. 6 is the single chip control module circuit diagram of the present invention.
Each label in Fig. 1-6：1- bluetooth modules, 2- measuring circuits, 3-A/D change-over circuits, 4- power amplification circuits I, 5-
Single chip control module I, 6- display modules, 7- warning devices I, 8- power supplys I, 9- infrared inductions circuit, 10- power amplification circuits
IIth, 11- single chip control modules II, 12- warning devices II, 13- power supplys II, 14- hoistway door lock devices, 15- are based on embedded
Elevator door safety real-time control apparatus, the 16- lift cars of bluetooth ranging.
Embodiment
Below in conjunction with the accompanying drawings and specific embodiment, the invention will be further described.
Embodiment 1：As shown in figures 1 to 6, a kind of elevator door safety real-time control apparatus based on embedded Bluetooth ranging, bag
Include bluetooth module 1, measuring circuit 2, A/D change-over circuits 3, power amplification circuit I 4, single chip control module I 5, display module 6,
Warning device I 7, power supply I 8, infrared induction circuit 9, power amplification circuit II 10, single chip control module II 11, warning device
II 12, power supply II 13, hoistway door lock device 14；Wherein, bluetooth module 1 is connected with measuring circuit 2, and measuring circuit 2 and A/D turns
Change circuit 3 to be connected, A/D change-over circuits 3 are connected with power amplification circuit I 4, power amplification circuit I 4 controls mould with single-chip microcomputer
Block I 5 is connected, and single chip control module I 5 is connected with display module 6, warning device I 7 respectively, power supply I 8 respectively with bluetooth
Module 1, single chip control module I 5, warning device I 7 are connected, and constitute bluetooth range finder module；Infrared induction circuit 9 and power
Amplifying circuit II 10 is connected, and power amplification circuit II 10 is connected with single chip control module II 11, single chip control module
II 11 are connected with warning device II 12, power supply II 13 respectively with infrared induction circuit 9, single chip control module II 11, alarm
Device II 12 is connected, and constitutes infrared induction module；Bluetooth range finder module and infrared induction module respectively with hoistway door lock device
14 are connected.
As the further scheme of the present invention, the bluetooth module 1 can be using following design：Bluetooth module 1 can be wrapped
Include：Chip CC2541, resistance R1, electric capacity C1, C2, C3, C4, C5, C6, C7, C8, C9, C10, crystal oscillator Y1, Y2, inductance L1, L2,
L3；Wherein, chip CC2541 pin 32,33 is connected with electric capacity C1, C2 respectively, and crystal oscillator Y1 is connected between C1, C2, pin 40
It is connected with electric capacity C3, pin 22,23 is connected with electric capacity C4, C5 respectively, and crystal oscillator Y2 is connected between C4, C5, electric capacity C6, C7 series connection,
Electric capacity C8 is connected with inductance L2, is connected respectively with chip CC2541 pins 25,26, and inductance L1 is connected between electric capacity C6, C7, electric capacity
C9 is connected between electric capacity C8 and inductance L2 and is grounded, and inductance L3 is connected between electric capacity C7 and inductance L2 and is followed by by C10
Ground.
As the further scheme of the present invention, the power amplification circuit I 4 can be using following design：Power amplification electricity
Road I 4 can include：Operational amplifier Op1, Op2, resistance R2, R3, R4, R5, R6, R7, electric capacity C11, C12, C13, C14, C15,
C16、C17、C18、C19；A wherein resistance R3 termination input signal INPUT, the positive pole of the other end and operational amplifier Op1 connects
Connect, resistance R2 one end ground connection other end and Op1 negative pole are connected, the upper end pin that electric capacity C11, C12 parallel connection pass through Op1
Access, electric capacity C13, C14 access Op1 lower end pin parallel, and variable resistor R4 is connected between Op1 negative pole and output port,
Electric capacity C15 is in parallel with resistance R5 and is serially connected in Op1 output end, and is connected to operational amplifier Op2 positive pole, and Op2 negative pole connects
Enter -15V voltages, electric capacity C16, C17 parallel connection access Op2 lower end pin, electric capacity C18, C19 parallel connection access Op2 upper end pin,
Op2 output end is concatenated with resistance R6, R7, resistance R7 other end ground connection.
As the further scheme of the present invention, the infrared induction circuit 9 can be using following design：Infrared induction circuit
9 can include：Probe, electric capacity C20, C21, C22, C23, C24, C25, C26, resistance R8, R9, R10, R11, R12, R13, R14,
R15, R16, R17, operational amplifier Op3, Op4, triode Q3, Q4, Q5, diode D1；Wherein, electric capacity C20 one end and spy
Head positive pole is connected, and other end ground connection, electric capacity C21 one end is connected with operational amplifier Op3 negative pole, the other end and electric capacity C22
Series connection is connected to the negative pole end of probe, and resistance R8, R9 are connected in parallel on triode Q1 colelctor electrode, resistance R8 one end and triode
Q1 base stage connection, Q1 emitter stages connect the negative pole of probe；Resistance R10 connects with electric capacity C23 and is connected to operational amplifier Op3 positive pole
End, resistance R11 is connected between Op3 output end and resistance R10, and electric capacity C24 is in parallel with resistance R11 to be equally connected on Op3 output ends
Between resistance R10；Operational amplifier Op3 output end and Op4 negative pole are connected, and variable resistor R12 is connected on the positive and negative of probe
Between pole, and extend the positive pole that branch is linked into Op4；Resistance R13 is connected on operational amplifier Op4 output end and triode Q2
Between base stage, resistance R14 and Q2 colelctor electrode are connected, and diode D1 is connected between the positive pole of probe and resistance R14, triode
Q3 emitter stage and Q2 base stage are connected, and Q3 base stage is connected with resistance R17, and electric capacity C26, resistance R15, R16 are connected in series.
As the further scheme of the present invention, the single chip control module I 5 can be using following design：Single-chip microcomputer control
Module I 5 processed can include chip AT89C52, resistance R18, button K1, electric capacity C27, C28, C29, crystal oscillator Y3；Described display
Module 6 includes chip LCD1602, cloudy row；The warning device I 7 includes resistance R19, triode Q4, loudspeaker；Wherein, chip
AT89C52 pin 18,19 is connected with electric capacity C27, C28 respectively, and crystal oscillator Y3 is connected between pin 18,19, and electric capacity C27, C28 are another
One end series connection ground connection；Chip AT89C52 pins 9 are connected with electric capacity C29, key switch K1 it is in parallel with electric capacity C29 and with resistance R18
Connect and compose reset circuit；Chip LCD1602 pins 1,2,3 series connection ground connection, chip LCD1602 pins 4,5,6 respectively with chip
AT89C52 pin 21,22,23 is connected, and chip AT89C52 pin 32 to 39 is connected with arranging cloudy pin 1 to 8 respectively；
Resistance R19 is connected and is connected in triode Q4 base stage with chip AT89C52 pin 25, one end of loudspeaker and Q4 transmitting
Pole is connected, other end ground connection.
The present invention operation principle be：
Bluetooth module is installed at the top of lift car 16 and calling out for each floor is based on embedded Bluetooth described in installation at terraced button
The elevator door safety real-time control apparatus 15 of ranging, when press call out terraced button when, This floor car bluetooth module send wireless communication
Number in the bluetooth module for calling out terraced floor, in paper（Hu Yanjiang, it is straight, what Jiang Ting etc. was delivered《Data based on Bluetooth technology are passed
The research and realization of defeated interface》, mention in Beijing University of Post ＆ Telecommunication Master's thesis 2004.04.01 " is realized using single-chip microcomputer control
Bluetooth replaces the function of cable ", so with single-chip microcomputer control Bluetooth chip carrying out data transmission that a kind of general side can be used
Method）, bluetooth module transmission is electromagnetic wave signal, carries out voltage stabilizing filtering etc. by measuring circuit, is input to power amplification circuit I
Central, electromagnetic signal is input to by resistance R3 among operational amplifier Op1 positive pole, variable resistor R4 and electric capacity C15 difference
Op1 negative pole and output end are connected on, electric capacity C11, C12 are in parallel, electric capacity C13, C14 parallel connection are connected on Op1 upper and lower ends composition respectively
One-level amplification module, the signal amplified by one-level is input to operational amplifier Op2 positive pole, electric capacity C16, C17 by resistance R
Parallel connection, electric capacity C18, C19 parallel connection is connected on Op2 lower end and upper end respectively, constitutes second amplifying circuit.From after two grades are amplified
Signal in propose RSSI value, and RSSI is updated among the fading model of RSSI and distance, so that according to formulaObtain apart from d, in fact this is car and oblique line distance both floor as shown in Fig. 2 institute apart from d
With the Pythagorean theorem according to triangle, air line distance of the bluetooth module at button is set to fixed in advance, finally according to hook
Stock theorem obtains distance of the car apart from each floor.And the distance value is deposited into the basis opened in single-chip microcomputer as hall door
One of condition.In infrared induction circuit, embedded probe real time scan receives car location information, if car reaches probe position
Put, send the positive pole that signal is input to operational amplifier Op3 by electric capacity C23 and resistance R10, resistance R11 is linked at the defeated of Op3
Go out between end and positive pole, constitute the one-level structure for amplifying of infrared signal, the signal by amplification is input to operational amplifier Op4's
Negative pole end, carries out two grades of amplifications, wherein, when equipment operating room lights light emitting diode D1, point out equipment normal work, above structure
Second of detection means of designated floor whether is reached into elevator.All signals carry out analysis meter in single chip control module
Calculate, in single chip control module, chip AT89C52 pins 32 are connected to pin 39 with Pai Yin, display chip LCD1602 leads to
Cross signal transmission and show floor distance, controlled when equipment fault or other situation chips AT89C52 send pulse signal to pin 25
Warning circuit processed carries out fault alarm, it is ensured that user security uses this equipment.
The specific embodiment of the present invention is explained in detail above in conjunction with accompanying drawing, but the present invention is not limited to above-mentioned reality
Example is applied, can also be on the premise of present inventive concept not be departed from the knowledge that those of ordinary skill in the art possess
Various changes can be made.
Claims (5)
1. a kind of elevator door safety real-time control apparatus based on embedded Bluetooth ranging, it is characterised in that：Including bluetooth module
（1）, measuring circuit（2）, A/D change-over circuits（3）, power amplification circuit I（4）, single chip control module I（5）, display module
（6）, warning device I（7）, power supply I（8）, infrared induction circuit（9）, power amplification circuit II（10）, single chip control module II
（11）, warning device II（12）, power supply II（13）, hoistway door lock device（14）；Wherein, bluetooth module（1）With measuring circuit（2）
It is connected, measuring circuit（2）With A/D change-over circuits（3）It is connected, A/D change-over circuits（3）With power amplification circuit I（4）It is connected
Connect, power amplification circuit I（4）With single chip control module I（5）It is connected, single chip control module I（5）Respectively with display mould
Block（6）, warning device I（7）It is connected, power supply I（8）Respectively with bluetooth module（1）, single chip control module I（5）, alarm dress
Put I（7）It is connected, constitutes bluetooth range finder module；Infrared induction circuit（9）With power amplification circuit II（10）It is connected, power
Amplifying circuit II（10）With single chip control module II（11）It is connected, single chip control module II（11）With warning device II
（12）It is connected, power supply II（13）Respectively with infrared induction circuit（9）, single chip control module II（11）, warning device II
（12）It is connected, constitutes infrared induction module；Bluetooth range finder module and infrared induction module respectively with hoistway door lock device（14）
It is connected.
2. the elevator door safety real-time control apparatus according to claim 1 based on embedded Bluetooth ranging, its feature exists
In：The bluetooth module（1）Including：Chip CC2541, resistance R1, electric capacity C1, C2, C3, C4, C5, C6, C7, C8, C9, C10,
Crystal oscillator Y1, Y2, inductance L1, L2, L3；Wherein, chip CC2541 pin 32,33 is connected with electric capacity C1, C2 respectively, crystal oscillator Y1
It is connected between C1, C2, pin 40 is connected with electric capacity C3, pin 22,23 is connected with electric capacity C4, C5 respectively, and crystal oscillator Y2 is connected on C4, C5
Between, electric capacity C6, C7 series connection, electric capacity C8 connect with inductance L2, are connected respectively with chip CC2541 pins 25,26, and inductance L1 connects
Between electric capacity C6, C7, electric capacity C9 is connected between electric capacity C8 and inductance L2 and is grounded, and inductance L3 is connected on electric capacity C7 and inductance L2
Between and pass through after C10 be grounded.
3. the elevator door safety real-time control apparatus according to claim 1 based on embedded Bluetooth ranging, its feature exists
In：The power amplification circuit I（4）Including：Operational amplifier Op1, Op2, resistance R2, R3, R4, R5, R6, R7, electric capacity C11,
C12、C13、C14、C15、C16、C17、C18、C19；A wherein resistance R3 termination input signal INPUT, the other end and computing
Amplifier Op1 positive pole connection, resistance R2 one end ground connection other end and Op1 negative pole are connected, electric capacity C11, C12 parallel connection
Accessed by Op1 upper end pin, electric capacity C13, C14 access Op1 lower end pin parallel, variable resistor R4 is connected on the negative of Op1
Between pole and output port, electric capacity C15 is in parallel with resistance R5 and is serially connected in Op1 output end, and is connected to operational amplifier Op2's
Positive pole, Op2 negative pole access -15V voltages, electric capacity C16, C17 parallel connection access Op2 lower end pin, electric capacity C18, C19 simultaneously couple
Enter Op2 upper end pin, Op2 output end is concatenated with resistance R6, R7, resistance R7 other end ground connection.
4. the elevator door safety real-time control apparatus according to claim 1 based on embedded Bluetooth ranging, its feature exists
In：The infrared induction circuit（9）Including：Probe, electric capacity C20, C21, C22, C23, C24, C25, C26, resistance R8, R9,
R10, R11, R12, R13, R14, R15, R16, R17, operational amplifier Op3, Op4, triode Q3, Q4, Q5, diode D1；Its
In, electric capacity C20 one end is connected with probe positive pole, other end ground connection, electric capacity C21 one end and operational amplifier Op3 negative pole
Connection, the other end is connected with electric capacity C22 is connected to the negative pole end of probe, and resistance R8, R9 are connected in parallel on triode Q1 colelctor electrode,
Resistance R8 one end is connected with triode Q1 base stage, and Q1 emitter stages connect the negative pole of probe；Resistance R10 and electric capacity C23 series connections
To operational amplifier Op3 positive terminal, resistance R11 is connected between Op3 output end and resistance R10, electric capacity C24 and resistance R11
Parallel connection is equally connected between Op3 output ends and resistance R10；Operational amplifier Op3 output end and Op4 negative pole are connected, variable
Resistance R12 is connected between the both positive and negative polarity of probe, and extends the positive pole that branch is linked into Op4；Resistance R13 is connected on operational amplifier
Between Op4 output end and triode Q2 base stage, resistance R14 and Q2 colelctor electrode connection, and diode D1 is connected on probe
Between positive pole and resistance R14, triode Q3 emitter stage and Q2 base stage are connected, and Q3 base stage is connected with resistance R17, electric capacity
C26, resistance R15, R16 are connected in series.
5. the elevator door safety real-time control apparatus according to claim 1 based on embedded Bluetooth ranging, its feature exists
In：The single chip control module I（5）Including chip AT89C52, resistance R18, button K1, electric capacity C27, C28, C29, crystal oscillator
Y3；Described display module（6）Including chip LCD1602, cloudy row；The warning device I（7）Including resistance R19, triode
Q4, loudspeaker；Wherein, chip AT89C52 pin 18,19 is connected with electric capacity C27, C28 respectively, crystal oscillator Y3 be connected on pin 18,
Between 19, electric capacity C27, C28 other end series connection ground connection；Chip AT89C52 pins 9 are connected with electric capacity C29, key switch K1 and electricity
Hold C29 parallel connections and connect and compose reset circuit with resistance R18；The series connection ground connection of chip LCD1602 pins 1,2,3, chip LCD1602
Pin 4,5,6 is connected with chip AT89C52 pin 21,22,23 respectively, chip AT89C52 pin 32 to 39 respectively with row
Cloudy pin 1 to 8 is connected；Resistance R19 is connected and is connected in triode Q4 base stage with chip AT89C52 pin 25, raises
One end of sound device and Q4 emitter stage are connected, other end ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710321177.5A CN107037767A (en) | 2017-05-09 | 2017-05-09 | A kind of elevator door safety real-time control apparatus based on embedded Bluetooth ranging |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710321177.5A CN107037767A (en) | 2017-05-09 | 2017-05-09 | A kind of elevator door safety real-time control apparatus based on embedded Bluetooth ranging |
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| CN107037767A true CN107037767A (en) | 2017-08-11 |
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| CN201710321177.5A Pending CN107037767A (en) | 2017-05-09 | 2017-05-09 | A kind of elevator door safety real-time control apparatus based on embedded Bluetooth ranging |
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Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
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Application publication date: 20170811 |