CN110288803A - Car is detained children's detection and system for prompting and method - Google Patents
Car is detained children's detection and system for prompting and method Download PDFInfo
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- CN110288803A CN110288803A CN201910608861.0A CN201910608861A CN110288803A CN 110288803 A CN110288803 A CN 110288803A CN 201910608861 A CN201910608861 A CN 201910608861A CN 110288803 A CN110288803 A CN 110288803A
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- 238000001514 detection method Methods 0.000 title claims abstract description 67
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- 238000004891 communication Methods 0.000 claims description 11
- 239000003550 marker Substances 0.000 claims description 11
- 230000009429 distress Effects 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims 2
- 238000005516 engineering process Methods 0.000 abstract description 13
- 238000012545 processing Methods 0.000 description 4
- 239000000446 fuel Substances 0.000 description 3
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 206010003497 Asphyxia Diseases 0.000 description 1
- 206010011469 Crying Diseases 0.000 description 1
- 206010019345 Heat stroke Diseases 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/0202—Child monitoring systems using a transmitter-receiver system carried by the parent and the child
- G08B21/0205—Specific application combined with child monitoring using a transmitter-receiver system
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Abstract
It include: ToF sensor the present invention provides a kind of interior delay children detection and system for prompting and method, the system comprising signal projector and signal receiver；Signal projector is used for interior target area emission detection signal, and signal receiver is for receiving reflection signal；Vehicle operation detecting element, door sensor and alarm unit connected to the processor；When vehicle operation detecting element detects that vehicle is out of service and door sensor detects that car door has been switched off, processor control ToF sensor starts to operate；When processor determines object to be checked based on the difference of detectable signal and reflection signal to be detained children, control alarm unit operation.The embodiment of the present invention detects whether car has living body biological including children or pet to be detained using ToF technology, and recognition accuracy is high, can more preferably take precautions against and be detained children in the car or life danger occurs in pet.
Description
Technical field
It is detained reminding technology field more particularly to a kind of interior delay children detection the present invention relates to passenger and reminds
System and method.
Background technique
The description of this part, which is only provided, discloses relevant background information to the present invention, without constituting the prior art.
With the development of economy, the promotion of income level of resident, domestic automobile ownership are also improving year by year.Domestic automobile
It is universal, it is also more and more using the dangerous scene occurred with automobile while bringing huge convenient to people's life.
For example, in some cases, children are trapped in automobile alone, can not get rid of poverty.If children are left for a long time
In the car, less serious case gets a fright, and the situation of the harm health such as heatstroke occurs；Severe one it is possible that asphyxia danger, or
By life danger due to overheating under the hot environment in summer.Causing children to be detained the reason of car includes children by family
It is long forget in the car, children unexpectedly by oneself lock in vehicle, or in a few cases, children are deliberately stayed in car.This
Kind tragedy causes not to be associated with region, all not related with the identity of car owner, occupation, implies that this danger is possible to occur
In any place, it is also possible to appear in any one family.Therefore, detection is detained children in the car and issues alarm signal
It is a demand of crucial importance and significant to seek to rescue.
Detection car whether be detained children need is realized by sensor, the prior art use mostly pressure sensor,
The methods of capacitance sensor, but these methods are difficult to the difference human body and other articles of specificity.For example, US7378979B2
Whether the safety belt that disclosed scheme predominantly detects baby seat is bound, detection trigger device after driver gets off, if at this time
Baby seat safety belt is still binding state, then it is interior to assert that children are detained, issues alarm.Scheme disclosed in CN102259629B
It predominantly detects whether car has children's crying sound, and utilizes touch control capacitance auxiliary detection.CN203819125U is examined by infrared light
Whether it is detained children in measuring car, and is assisted using camera.CN105128734A is realized jointly using pressure sensor and sound
Detection.CN205524112U utilizes capacitance sensor, and human body is equivalent to capacitor, judges whether that someone is stagnant according to the change of capacitor
It stays on seat.US9847004B1 is detained children using radar sensor detection, and sensor is by comparing transmitting and received electricity
Magnetic wave judges measured object characteristic, and then judges whether object to be detected is children or pet.
Organism and inorganic matter cannot be distinguished with safety belt binding sensor in weight sensor, capacitance sensor, such as
It is placed with other articles on fruit children's seat, then easily forms false alarm.In contactless measurement, camera can not be at night
Between function；Sound transducer can only identify the children for having sound, can not identify static children, if children can not issue
Sound cannot then trigger alarm；Infrared sensor can only simply judge that the temperature in target area is distributed, and accuracy is low；And radar
Then to human body, there are potential healthy hidden dangers for sensor.
It should be noted that the above description of the technical background be intended merely to it is convenient to technical solution of the present invention carry out it is clear,
Complete explanation, and facilitate the understanding of those skilled in the art and illustrate.Cannot merely because these schemes of the invention
Background technology part is expounded and thinks that above-mentioned technical proposal is known to those skilled in the art.
Summary of the invention
Based on prior art defect above-mentioned, the embodiment of the invention provides a kind of interior delay children detection and system is reminded
System and method detect whether car has the living body biological including children or pet to be detained using ToF technology, and identification is accurate
Degree is high, can more preferably take precautions against and be detained children in the car or life danger occurs in pet.
To achieve the goals above, the present invention provides the following technical solutions.
It is a kind of interior to be detained children's detection and system for prompting, comprising:
ToF sensor, the ToF sensor includes signal projector and signal receiver；The signal projector is used for
To interior target area emission detection signal, the signal receiver is for receiving the detectable signal in target area
The reflected reflection signal of object to be checked；
The processor connecting with the ToF sensor, the processor can be believed based on the detectable signal and the reflection
Number difference determine whether object to be checked is to be detained children；
Vehicle operation detecting element, door sensor and the alarm unit being connected to the processor；The vehicle operation
Whether detecting element is out of service for detecting vehicle, and the door sensor is for detecting whether car door has been switched off；
Detect that vehicle is out of service when the vehicle runs detecting element, and the door sensor detects vehicle
When door has been switched off, the processor controls the ToF sensor and starts to operate；
When the processor determines object to be checked for delay children based on the difference of the detectable signal and the reflection signal
When, control the alarm unit operation.
Preferably, the ToF sensor is sound wave ToF sensor, and the signal projector is pinger, the letter
Number receiver is acoustic receiver.
Preferably, the sound wave ToF sensor is micro-ultrasonic transducer.
Preferably, the processor connection timer, the timer is for setting the secondary detection time；
It is to be detained youngster when the processor determines object to be checked not based on the difference of the detectable signal and the reflection signal
Tong Shi, the processor control the ToF sensor and execute secondary operation；
Before the secondary detection time countdown terminates, the processor is based on the signal projector Secondary Emission
Detectable signal and the signal receiver secondary reception to the difference of reflection signal still determine object to be checked not and be to be detained children
When, system enters suspend mode.
Preferably, before the secondary detection time countdown terminates, the processor is based on the signal projector
The difference for the reflection signal that the detectable signal of Secondary Emission and the signal receiver secondary reception arrive determines object to be checked to be detained
When children, the processor controls the alarm unit operation.
Preferably, the alarm unit includes at least one of car horn, side-marker lamp, communication module；
When the processor determines object to be checked for delay children based on the difference of the detectable signal and the reflection signal
When, the alarm unit operation sends distress signals to designated terminal including car horn whistle, side-marker lamp flashing, communication module
At least one of.
A method of utilizing any of the above-described interior delay children detection and system for prompting, comprising:
Detect that vehicle is out of service when the vehicle runs detecting element, and the door sensor detects vehicle
When having been switched off, the processor controls the ToF sensor and starts to operate door: the signal projector of the ToF sensor to
Interior scheduled target area emission detection signal, to be checked object of the detectable signal in target area reflect to form reflection letter
Number, the reflection signal is received by the signal receiver of the ToF sensor；
When the processor determines that object to be checked is to be detained children based on the difference of the detectable signal and the reflection signal,
Control the alarm unit operation.
Preferably, the processor connection timer, the timer is for setting the secondary detection time；
It is to be detained youngster when the processor determines object to be checked not based on the difference of the detectable signal and the reflection signal
Tong Shi, the processor control the ToF sensor and execute secondary operation；
Before the secondary detection time countdown terminates, it is secondary that the processor is again based on the signal projector
The detectable signal of transmitting and the signal receiver secondary reception to the difference of reflection signal still to determine object to be checked not be to be detained
When children, system enters suspend mode.
Preferably, before the secondary detection time countdown terminates, the processor is based on the signal projector two
The difference for the reflection signal that the detectable signal of secondary transmitting and the signal receiver secondary reception arrive determines object to be checked to be detained youngster
Tong Shi, the processor control the alarm unit operation.
Preferably, the alarm unit includes at least one of car horn, side-marker lamp, communication module；
When the processor determines object to be checked for delay children based on the difference of the detectable signal and the reflection signal
When, the alarm unit operation sends distress signals to designated terminal including car horn whistle, side-marker lamp flashing, communication module
At least one of.
The interior of the embodiment of the present invention is detained children's detection and system for prompting and method, detects target area using ToF technology
Whether domain has children or pet, and recognition accuracy is higher, can more preferably take precautions against and be detained children in the car or life occurs in pet
It is dangerous.
Referring to following description and accompanying drawings, the particular embodiment of the present invention is disclosed in detail, specifies the principle of the present invention
It can be in a manner of adopted.It should be understood that the embodiment of the present invention is not so limited in range.
The feature for describing and/or showing for a kind of embodiment can be in a manner of same or similar one or more
It uses in other embodiments, is combined with the feature in other embodiments, or the feature in substitution other embodiments.
It should be emphasized that term "comprises/comprising" refers to the presence of feature, one integral piece, step or component when using herein, but simultaneously
It is not excluded for the presence or additional of one or more other features, one integral piece, step or component.
Detailed description of the invention
Attached drawing described here is only used for task of explanation, and is not intended to limit model disclosed by the invention in any way
It encloses.In addition, shape and proportional sizes of each component in figure etc. are only schematical, it is used to help the understanding of the present invention, and
It is not the specific shape and proportional sizes for limiting each component of the present invention.Those skilled in the art under the teachings of the present invention, can
Implement the present invention to select various possible shapes and proportional sizes as the case may be.In the accompanying drawings:
Fig. 1 is the interior module map for being detained children's detection and system for prompting of the embodiment of the present invention；
Fig. 2 is the interior working principle diagram for being detained ToF sensor in children's detection and system for prompting of the embodiment of the present invention；
Fig. 3 is that the interior of the embodiment of the present invention is detained the installation of ToF sensor in the car in children's detection and system for prompting
Schematic diagram；
Fig. 4 is the interior flow chart for being detained children's detection and based reminding method of the embodiment of the present invention.
Specific embodiment
Technical solution in order to enable those skilled in the art to better understand the present invention, below in conjunction with of the invention real
The attached drawing in example is applied, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without making creative work, all should belong to guarantor of the present invention
The range of shield.
It should be noted that it can directly on the other element when element is referred to as " being set to " another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ",
" right side " and similar statement for illustrative purposes only, are not offered as being unique embodiment.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term as used herein "and/or" includes one or more phases
Any and all combinations of the listed item of pass.
As shown in Figure 1, the embodiment of the present invention it is interior be detained children's detection and system for prompting include: ToF sensor 1, with
The processor 2 of the connection of ToF sensor 1, vehicle operation detecting element 3, door sensor 4 and the alarm connecting with processor 2 are single
Member 5.
As shown in Fig. 2, ToF sensor 1 includes signal projector and signal receiver.Signal projector is used for car
Target area emission detection signal, to be checked object of the detectable signal in target area reflect to form reflection signal, reflect signal quilt
The signal receiver of ToF sensor 1 receives.
Whether vehicle operation detecting element 3 is out of service for detecting vehicle, and door sensor 4 is for detecting car door
Whether have been switched off.The signal that vehicle operation detecting element 3 and door sensor 4 will test feeds back to processor 2.
In the present embodiment, vehicle operation detecting element 3 can be the structure for being arbitrarily able to detect vehicle current operating conditions
It makes.In practice, can whether in operating status by detecting the engine of automobile, to judge the operating status of vehicle.And automobile
The operation of engine is related to many kinds of parameters, such as water temperature, oil temperature, intake air temperature/pressure, cylinder negative pressure/internal pressure, oil pressure, air
Flow and fuel flow rate, crankshaft operating status, igniter state etc..Therefore, by detecting and analyzing above-mentioned parameter, can between
The reversed operating status for reflecting engine, then judges the operating status of vehicle.
Therefore, vehicle operation detecting element 3 can be using the detection for being able to detect above-mentioned any one or several parameters
Element or sensor.For example, vehicle operation detecting element 3 includes but is not limited to: for detecting water temperature/oil of automobile engine
Temperature/intake air temperature temperature sensor, for detecting admission pressure/cylinder negative pressure/internal pressure/oil pressure pressure sensor, being used for
The flow sensor of air mass flow and fuel flow rate, the position for detecting crankshaft operating status and speed probe, for examining
The igniter detection sensor, etc. of measuring point fire unit state.
When the information that processor 2 is fed back based on vehicle operation detecting element 3 and door sensor 4, automobile stop over is determined
It only runs, and after car door has completely closed, control ToF sensor 1 starts to detect.Concrete operations are as follows: signal projector is to vehicle
Interior scheduled target area emission detection signal, to be checked object of the detectable signal in target area reflect to form reflection signal, quilt
Signal receiver receives.
When processor 2 determines object to be checked based on the difference of detectable signal and reflection signal to be detained children, control alarm is single
Member 5 operates.
The embodiment of the present invention using ToF (Time of Flight, flight time) technology principle come detect automobile (including
Fuel vehicle, electric vehicle, hybrid electric vehicle) in whether have children's delay, and when determining has children's delay, issue alarm signal.
The realization of ToF technology can be by optical signalling (including visible light, infrared light), radiofrequency signal or acoustic signals.Such as Fig. 2
It is shown, principle are as follows: the signal projector of ToF sensor 1 has specific frequency and width to interior scheduled target area transmitting
The detectable signal of value, detectable signal contact object back reflection to be checked, are received by signal receiver.The width of detectable signal and reflection signal
Value, frequency, phase are different from, and by the difference of comprehensive analysis detectable signal and reflection signal, can learn the spy of object to be checked
Sign.After collecting enough data, by machine learning, processor 2 can differentiate whether object to be checked is to be detained children.
The difference of ToF technology analysis reflection signal and detectable signal, so that the feature of object to be checked is obtained, including object to be checked
3-D image.The technology can be very good to realize the specific recognition to interior children are detained, and accuracy is higher.
As shown in figure 3, it can be located above interior back seat, signal can cover for the design of ToF sensor 1 in the car
All seats of lid heel row.Certainly, ToF sensor 1 can also be installed on the positions such as roof, the chair back, reflective mirror, as long as can correspond to
Object on seat can be not especially limited specific installation site.
It is detained in the means of children's detection being realized using ToF principle, it is most advantageous using sonic detection.Because of sound wave wave
Speed is relatively slow, the propagation time is longer, and system has the more sufficient time to handle reflection signal with detectable signal, this subtracts significantly
Detection can be completed without frequently very brief signal processing in the small performance requirement of system, and power consumption is extremely low.In addition, sound wave can be with
Diffraction passes round barrier, the detection of Yi Shixian more perspective.Also, sound wave is non-hazardous to human body.Therefore, sound wave ToF technology can
Preferably to realize the interior detection for being detained children.
Therefore, ToF sensor 1 is preferably sound wave ToF sensor, then signal projector is pinger, and signal receives
Device is acoustic receiver.Specifically, sound wave ToF sensor includes a pinger and an acoustic receiver, sound wave hair
Emitter and acoustic receiver can be two independent devices, be also possible to the same device, i.e., the same device both does sound wave
Transmitter does acoustic receiver again.
Pinger issues detection sound wave, and detection sound wave can reflect after touching object to be checked, the reflection being reflected back
Acoustic signals are adsorbed by the sound wave receiver.Sound wave is the flight time from the time difference between receiving is emitted to, by acoustic velocity
It can speculate object to be checked at a distance from sound wave ToF sensor.
After pinger issues detection sound wave, detection sound wave is propagated in car body and is touching object back reflection, instead
The reflected acoustic wave being emitted back towards is adsorbed by the sound wave receiver, and by the signal difference of analysis detection sound wave and reflected acoustic wave, and passes through spy
Fixed algorithm may determine that whether object to be checked is to be detained children.
ToF sensor 1 is specifically as follows acoustic wave transducer, and operating frequency range is between 20kHz-400kHz.Sound wave
Energy converter can be PZT (piezoelectric transducer) or electrostatic transducer, including but not limited to use the prepared piezoelectric supersonic of piezoelectric ceramics
Energy converter, microphone, loudspeaker and micro-ultrasonic transducer (MUT, the Micromachined obtained using micro-processing technology
Ultrasonic Transducer) etc..In particular, micro-ultrasonic transducer is smaller compared with stock size size sensor, cost and power consumption
It is lower, therefore multiple, all angles in the car can be installed.
Further, processor 2 is connected with memory 6 and timer 7, and memory 6 is for storing the detection of ToF sensor 1
Interior data, realize the caching of data.Timer 7 is for setting the secondary detection time.When processor 2 be based on detectable signal and
It is when being detained children that the difference of reflection signal, which determines object to be checked not, and timer 7 starts, and processor 2 controls ToF sensor 1 and executes
Secondary operation.Before the countdown of secondary detection time terminates, processor 2 can be again based on the spy of signal projector Secondary Emission
Survey signal and signal receiver secondary reception to reflection signal difference come when determining whether object to be checked is delay children.Such as sentence
It is no not yet to determine result, then control system enters suspend mode.Specially control ToF sensor 1,5 suspend mode of alarm unit.
And if what detectable signal and signal receiver secondary reception of the processor 2 based on signal projector Secondary Emission arrived
Reflect signal difference judgement result be it is yes, illustrate first time testing result mistake, car has children's delay.At this point, processing
Device 2 controls alarm unit 5 and operates.
The secondary detection time is set by timer 7, and executes secondary detection operation, can effectively avoid the case where missing inspection
Occur.
Alarm unit 5 may include at least one of car horn 501, side-marker lamp 502, communication module 503.Work as processing
When device 2 determines object to be checked based on the difference of detectable signal and reflection signal to be detained children, the operation of alarm unit 5 includes automobile loudspeaker
501 whistles, the flashing of side-marker lamp 502, communication module 503 send at least one of distress signals to designated terminal.Wherein, vapour
The whistle of vehicle loudspeaker 501, the flashing of side-marker lamp 502 can prompt passer-by to provide help.Communication module 503 believes alert help
Number (such as short message, call etc.) is transferred to specific terminal device, such as mobile phone, the tablet computer of car owner, prompt make
User has children to be trapped in vehicle, and implements rescue as early as possible.
In the present embodiment, processor 2 can be implemented in any suitable manner.Specifically, for example, processor 2 can be with
The computer-readable program generation for taking such as microprocessor or processor and storage that can be executed by the microprocessor or processor
Computer-readable medium, logic gate, switch, the specific integrated circuit (Application of code (such as software or firmware)
Specific Integrated Circuit, ASIC), programmable logic controller (PLC) (Programmable Logic
Controller, PLC) and insertion micro-control unit (Microcontroller Unit, MCU) form, the example of above-mentioned module
Son include but is not limited to following micro-control unit: ARC 625D, Atmel AT91SAM, Microchip PIC18F26K20 and
Silicone Labs C8051F320.Those skilled in the art are it is to be understood that in addition to pure computer readable program code side
Formula realizes other than the function of the processor 2, completely can be by the way that method and step is carried out programming in logic come so that control unit
Identical function is realized in the form of logic gate, switch, specific integrated circuit, programmable logic controller (PLC) and insertion micro-control unit etc.
Energy.
Above-mentioned interior delay children detection and system for prompting examinations and the process of alarm are as shown in Figure 4.
Vehicle runs detecting element 3 and detects whether vehicle is out of service, and whether door sensor 4 detects car door
It closes.
When at least one in the result of above-mentioned two detection be it is no when, illustrate vehicle also in operation in, and/or, vehicle
Inside still there are other people.At this point, not executing the operation of following step.
And when the result of above-mentioned two detection is to be, i.e. vehicle is out of service, and car door has been switched off.This
When, processor 2 controls ToF sensor 1 and starts to work.Specifically: the signal projector of ToF sensor 1 is to interior scheduled mesh
Field emission detectable signal is marked, to be checked object of the detectable signal in target area reflects to form reflection signal, reflects signal by ToF
The signal receiver of sensor 1 receives.
Processor 2 determines whether object to be checked is to be detained children based on the difference of detectable signal and reflection signal.Work as judgement
As a result for when being, control alarm unit 5 is operated.
If it is to be detained children that processor 2, which determines object to be checked not based on the difference of detectable signal and reflection signal, count
When device 7 start and start countdown, processor 2 controls ToF sensor 1 and executes secondary operation.Also, processor 2 is again based on
The detectable signal of signal projector Secondary Emission and signal receiver secondary reception to reflection signal difference it is to be checked to determine
Whether object is to be detained children.When determining result is still no, system enters suspend mode.
And if what detectable signal and signal receiver secondary reception of the processor 2 based on signal projector Secondary Emission arrived
The judgement result for reflecting the difference of signal is yes, the control operation of alarm unit 5.
Once having detected children's delay, then alarm unit 5 issues alarm signal.After the completion of rescue, alarm release is
System enters suspend mode herein.
The interior of the embodiment of the present invention is detained children's detection and system for prompting and method, detects target area using ToF technology
Whether domain has children or pet, and recognition accuracy is higher, can more preferably take precautions against and be detained children in the car or life occurs in pet
It is dangerous.
It is only the one of the embodiment of the present invention it should be noted that detecting whether car has children's delay based on ToF technology
The feasible applicable scene of kind.In practice, the application of the embodiment of the present invention is not limited to above-mentioned scene.In the range of can be envisaged,
It can also be applied to the delay situation for detecting other any living body biologicals such as pet, old man etc., the embodiment of the present invention
This is not construed as limiting.
The foregoing is merely several embodiments of the present invention, those skilled in the art is according to interior disclosed in application documents
Hold, various changes or modifications can be carried out without departing from the spirit and scope of the present invention to the embodiment of the present invention.
Claims (10)
1. a kind of interior delay children detection and system for prompting characterized by comprising
ToF sensor, the ToF sensor includes signal projector and signal receiver；The signal projector is used for vehicle
Interior target area emission detection signal, the signal receiver are to be checked in target area for receiving the detectable signal
The reflected reflection signal of object；
The processor that connect with the ToF sensor, the processor can be based on the detectable signals and the reflection signal
Difference determines whether object to be checked is to be detained children；
Vehicle operation detecting element, door sensor and the alarm unit being connected to the processor；The vehicle operation detection
Whether element is out of service for detecting vehicle, and the door sensor is for detecting whether car door has been switched off；
Detect that vehicle is out of service when the vehicle runs detecting element, and the door sensor detects car door
When through closing, the processor controls the ToF sensor and starts to operate；
When the processor determines object to be checked based on the difference of the detectable signal and the reflection signal to be detained children, control
Make the alarm unit operation.
2. as described in claim 1 interior be detained children's detection and system for prompting, which is characterized in that the ToF sensor is
Sound wave ToF sensor, the signal projector are pinger, and the signal receiver is acoustic receiver.
3. interior delay children detection as claimed in claim 2 and system for prompting, which is characterized in that the sound wave ToF sensing
Device is micro-ultrasonic transducer.
4. interior delay children detection as described in claim 1 and system for prompting, which is characterized in that the processor connection meter
When device, the timer is for setting the secondary detection time；
When difference judgement to be checked object of the processor based on the detectable signal and the reflection signal is not to be detained children,
The processor controls the ToF sensor and executes secondary operation；
Before the secondary detection time countdown terminates, spy of the processor based on the signal projector Secondary Emission
Survey signal and the signal receiver secondary reception to the difference of reflection signal still to determine object to be checked not be delay children when, be
System enters suspend mode.
5. interior delay children detection as claimed in claim 4 and system for prompting, which is characterized in that when in the secondary detection
Before time countdown terminates, detectable signal and the signal of the processor based on the signal projector Secondary Emission are received
When the difference for the reflection signal that device secondary reception arrives determines object to be checked to be detained children, the processor controls the alarm unit
Operation.
6. as described in claim 1 interior be detained children's detection and system for prompting, which is characterized in that the alarm unit includes
At least one of car horn, side-marker lamp, communication module；
When the processor determines object to be checked based on the difference of the detectable signal and the reflection signal to be detained children, institute
Stating alarm unit operation includes car horn whistle, side-marker lamp flashing, communication module into designated terminal transmission distress signals
It is at least one.
7. a kind of method for being detained children's detection and system for prompting using car described in claim 1 to 6 any one, special
Sign is, comprising:
Detect that vehicle is out of service when the vehicle runs detecting element, and the door sensor detects car door
When through closing, the processor controls the ToF sensor and starts to operate: the signal projector of the ToF sensor is to car
Scheduled target area emission detection signal, to be checked object of the detectable signal in target area reflect to form reflection signal,
The reflection signal is received by the signal receiver of the ToF sensor；
When the processor determines object to be checked for delay children, control based on the difference of the detectable signal and the reflection signal
The alarm unit operation.
8. the method for claim 7, which is characterized in that the processor connection timer, the processor connection meter
When device, the timer is for setting the secondary detection time；
When difference judgement to be checked object of the processor based on the detectable signal and the reflection signal is not to be detained children,
The processor controls the ToF sensor and executes secondary operation；
Before the secondary detection time countdown terminates, the processor is again based on the signal projector Secondary Emission
Detectable signal and the signal receiver secondary reception to the difference of reflection signal still determine object to be checked not and be to be detained children
When, system enters suspend mode.
9. method according to claim 8, which is characterized in that before the secondary detection time countdown terminates, the place
The reflection signal that reason detectable signal and the signal receiver secondary reception of the device based on the signal projector Secondary Emission arrive
Difference when determining object to be checked to be detained children, the processor controls the alarm unit operation.
10. the method for claim 7, which is characterized in that the alarm unit includes car horn, side-marker lamp, communication
At least one of module；
When the processor determines object to be checked based on the difference of the detectable signal and the reflection signal to be detained children, institute
Stating alarm unit operation includes car horn whistle, side-marker lamp flashing, communication module into designated terminal transmission distress signals
It is at least one.
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