CN110432916A - Lie detection system and lie detecting method based on millimetre-wave radar - Google Patents
Lie detection system and lie detecting method based on millimetre-wave radar Download PDFInfo
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- CN110432916A CN110432916A CN201910743883.8A CN201910743883A CN110432916A CN 110432916 A CN110432916 A CN 110432916A CN 201910743883 A CN201910743883 A CN 201910743883A CN 110432916 A CN110432916 A CN 110432916A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
- A61B5/0205—Simultaneously evaluating both cardiovascular conditions and different types of body conditions, e.g. heart and respiratory condition
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/16—Devices for psychotechnics; Testing reaction times ; Devices for evaluating the psychological state
- A61B5/164—Lie detection
Abstract
The present invention relates to a kind of lie detection system and method based on millimetre-wave radar, belongs to Radar Technology field.The lie detection system and method based on millimetre-wave radar, system millimeter waves radar and processor emit millimeter wave to object of detecting a lie by millimetre-wave radar, and receive the millimeter wave of reflection, generate radar signal；And then the physiological data for object of detecting a lie is generated according to radar signal using processor, result of detecting a lie is generated according to the physiological data.Be achieved in it is a kind of do not contact human body, be not easy to be found by subject, avoid subject that the lie detecting method of unexpected emotional change occurs, the accuracy that can make to detect a lie has than the prior art significantly to be promoted.
Description
Technical field
The present invention relates to Radar Technology fields, in particular to application of MMW radar technical field, in particular to a kind of base
In the lie detection system and lie detecting method of millimetre-wave radar.
Background technique
A lie detector is various physiological changes (breathing, pulse, frequency, blood pressure and the skin for recorder in emotional change
Skin humidity etc.) a kind of scientific instrument.The principle detected a lie is: vast majority of people when lying or by influence in relation to mood word,
A series of variation that automatic nervous system functions can occur, the emotional state of subject at that time can be reflected by detecting these variations, right
It whether true answers.In juridical practice, the testing result of a lie detector has certain reference value to case trial.
In the prior art, a lie detector is generally made of sensor and host etc..Sensor and the body surface of people connect, and acquire people
The change information of body physiological parameter；Host is electronic component, is stored, is analyzed according to sensor signal collected, obtained
It detects a lie result.Sensor includes the skin electric transducer being worn on finger, for measuring the variation of skin resistance；Breathing sensing
Device ties up to the chest of people, the variation of measurement people's breathing；Pulse and blood pressure sensor are a kind of voltage sensitive sensor or sphygmomanometer, are worn over
People's wrist or arm, the variation that measurement human connection is fought with blood pressure.
Its shortcoming is that various sensors require and human contact, test object is worn by nature after various sensors
The problem of knowing to being checked, cooperating inquiry, it is found that receiving to detect a lie, therefore be easy psychological preparation, actively
Adjust or overcome emotional change.It, still can be because knowing receiving to detect a lie due to there are feelings even if emotional change be unable to completely control
Thread fluctuation, causing to detect a lie, there are deviation or result inaccuracy.
Therefore, how one kind is provided and does not contact human body, is not easy to be found by subject, avoids it that unexpected mood occurs and becomes
Change, to guarantee that the novel mode of detecting a lie of accuracy becomes this field urgent problem to be solved with equipment.
Summary of the invention
The purpose of the present invention is overcome it is above-mentioned in the prior art the shortcomings that, provide it is a kind of do not contact human body, be not easy by by
Survey object discovery, avoid subject that unexpected emotional change occurs, thus guarantee test accuracy based on millimetre-wave radar
Lie detection system and lie detecting method.
In order to achieve the above purpose, the lie detection system of the invention based on millimetre-wave radar has following constitute:
It includes millimetre-wave radar and processor.
Millimetre-wave radar is used for object transmitting millimeter wave of detecting a lie, and receives the millimeter wave of reflection, generates radar signal；
Processor is used to generate the physiological data for object of detecting a lie according to the radar signal, and according to the physiology number
It detects a lie result according to generation.
In the lie detection system based on millimetre-wave radar, the millimetre-wave radar is in some cycles persistently to the survey
The chest of lie object emits millimeter wave, and receives the millimeter wave of reflection, is generated according to the millimeter wave of reflection about object chest of detecting a lie
The radar signal of mouth fluctuating data.
In the lie detection system based on millimetre-wave radar, the processor includes data generating unit and detects a lie unit,
The data generating unit according to the radar signal generate described in detect a lie the physiological data of object, the unit of detecting a lie
The result of detecting a lie is generated according to the variation tendency of the physiological data.
In the lie detection system based on millimetre-wave radar, the data generating unit is used for according to the radar signal
It detects a lie described in generation the respiratory rate of object, heart rate, at least one data in blood pressure.
In the lie detection system based on millimetre-wave radar, the unit of detecting a lie is for according to the respiratory rate, the heart
Whether object of detecting a lie described at least one Data Detection in rate, blood pressure there is mood swing, and root in a period of time
Whether lie according to the testing result judgement of the mood swing object of detecting a lie.
The present invention also provides a kind of lie detecting methods based on millimetre-wave radar, method includes the following steps:
(A) millimetre-wave radar is to object transmitting millimeter wave of detecting a lie, and receives the millimeter wave of reflection, generates radar signal；
(B) processor receives the radar signal, and the physiological data for object of detecting a lie, and root are generated according to the radar signal
Result of detecting a lie is generated according to the physiological data.
In the lie detecting method based on millimetre-wave radar, the step (A) specifically includes the following steps:
(A1) millimetre-wave radar described in persistently emits millimeter wave to the chest of the object of detecting a lie in some cycles, and
Receive the millimeter wave of reflection；
(A2) millimetre-wave radar described in is generated according to the millimeter wave received about object chest fluctuating data of detecting a lie
Radar signal.
In the lie detecting method based on millimetre-wave radar, the processor includes data generating unit and detects a lie unit,
The step (B) specifically includes the following steps:
(B1) data generating unit described according to the radar signal generate described in detect a lie the physiological data of object；
(B2) unit of detecting a lie described in generates the result of detecting a lie according to the variation tendency of the physiological data.
In the lie detecting method based on millimetre-wave radar, the data generating unit is used for according to the radar signal
It detects a lie described in generation the respiratory rate of object, heart rate, at least one data in blood pressure；
The unit of detecting a lie is for according at least one Data Detection institute in the respiratory rate, heart rate, blood pressure
Whether the object of detecting a lie stated there is mood swing in a period of time, and according to the judgement of the testing result of mood swing
Whether object of detecting a lie lies.
In the lie detecting method based on millimetre-wave radar, within the period, the object of detecting a lie is wanted
Answer " control problem " and " crime relevant issues " are asked, the unit of detecting a lie is for according to the respiratory rate, heart rate, blood
Object is detected a lie described at least one Data Detection in pressure in the mood being required when answering " the crime relevant issues "
Fluctuation.
Using the lie detection system and method based on millimetre-wave radar of the invention, system millimeter waves radar and processing
Device emits millimeter wave to object of detecting a lie by millimetre-wave radar, and receives the millimeter wave of reflection, generates radar signal；And then benefit
The physiological data for generating object of detecting a lie according to radar signal with processor generates result of detecting a lie according to the physiological data.Thus real
Existing one kind does not contact human body, is not easy to be found by subject, avoids subject that the lie detecting method of unexpected emotional change occurs,
The accuracy that can make to detect a lie has than the prior art significantly to be promoted.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the lie detection system of the invention based on millimetre-wave radar.
Fig. 2 is the step flow chart of the lie detecting method of the invention based on millimetre-wave radar.
Specific embodiment
In order to be more clearly understood that technology contents of the invention, spy lifts following embodiment and is described in detail.
Refering to Figure 1, being the structural schematic diagram of the lie detection system of the invention based on millimetre-wave radar.
In one embodiment, being somebody's turn to do the lie detection system based on millimetre-wave radar includes: millimetre-wave radar and processor.
Millimetre-wave radar 1 is used to emit millimeter wave to object 4 of detecting a lie, and receives the millimeter wave of reflection, generates radar signal；
Processor 3 is used to generate the physiological data for object 4 of detecting a lie according to the radar signal, and according to the physiology
Data generate result of detecting a lie.
In a preferred embodiment, the millimetre-wave radar 1 is persistently detected a lie pair to described in some cycles
As 4 chest transmitting millimeter wave, and the millimeter wave of reflection is received, is generated according to the millimeter wave of reflection about 4 chest of object of detecting a lie
The radar signal of fluctuating data.
In a kind of further preferred embodiment, the processor 3 includes data generating unit and unit of detecting a lie,
The data generating unit according to the radar signal generate described in detect a lie the physiological data of object 4, the list of detecting a lie
Member generates the result of detecting a lie according to the variation tendency of the physiological data.
In a kind of embodiment still more preferably, the data generating unit is used to be believed according to the radar
It detects a lie described in number generating the respiratory rate of object 4, heart rate, at least one data in blood pressure.
In preferred embodiment, the unit of detecting a lie is for according in the respiratory rate, heart rate, blood pressure
At least one Data Detection described in object of detecting a lie whether occur mood swing in a period of time, and according to mood swing
The testing result judgement object of detecting a lie whether lie.
Also a kind of lie detecting method based on millimetre-wave radar of the present invention, this method are as shown in Figure 2, comprising the following steps:
(A) millimetre-wave radar is to object transmitting millimeter wave of detecting a lie, and receives the millimeter wave of reflection, generates radar signal；
(B) processor receives the radar signal, and the physiological data for object of detecting a lie, and root are generated according to the radar signal
Result of detecting a lie is generated according to the physiological data.
In a preferred embodiment, the step (A) specifically includes the following steps:
(A1) millimetre-wave radar described in persistently emits millimeter wave to the chest of the object of detecting a lie in some cycles, and
Receive the millimeter wave of reflection；
(A2) millimetre-wave radar described in is generated according to the millimeter wave received about object chest fluctuating data of detecting a lie
Radar signal.
In a kind of further preferred embodiment, the processor includes data generating unit and detects a lie unit,
The step (B) specifically includes the following steps:
(B1) data generating unit described according to the radar signal generate described in detect a lie the physiological data of object；
(B2) unit of detecting a lie described in generates the result of detecting a lie according to the variation tendency of the physiological data.
In a kind of preferred embodiment, the data generating unit is used to be generated according to the radar signal
The respiratory rate of the object of detecting a lie, heart rate, at least one data in blood pressure；
The unit of detecting a lie is for according at least one Data Detection institute in the respiratory rate, heart rate, blood pressure
Whether the object of detecting a lie stated there is mood swing in a period of time, and according to the judgement of the testing result of mood swing
Whether object of detecting a lie lies.
In a kind of embodiment still more preferably, within the period, the object quilt of detecting a lie
It is required that answer " control problem " and " crime relevant issues ", the described unit of detecting a lie be used for according to the respiratory rate, heart rate,
Object is detected a lie described at least one Data Detection in blood pressure in the feelings being required when answering " the crime relevant issues "
Thread fluctuation.
It is to be gone by millimeter wave in the working principle of the lie detection system of the invention based on millimetre-wave radar and lie detecting method
The fluctuating for detecting the chest of measurand shakes (heartbeat and breathing), and the displacement due to detecting this vibration is very small, width
In 1mm or so, traditional Radar Technology is difficult to detect degree.The present invention uses millimetre-wave radar, and the process of signal processing is practical
On be the phase change that signal is reflected on the same distance and position of detection, thus the variation of reverse push export distance.Whenever tested
After certain displacement has occurred in the chest of object, the distance of millimetre-wave radar transmission has some differences, by constantly supervising
The variation for surveying phase, can obtain accurate phase change value.
In practical applications, using lie detection system of the invention, as shown in Figure 1, including millimetre-wave radar 1, power supply 2
With processor 3 (computer), tested personnel 4 is also shown in figure.
The process detected a lie is as follows: when detecting a lie, general inquisitionist can inquire two kinds of problems --- " control problem " and " crime
Relevant issues "." control problem " is usually some essential information classes such as name, age, birth, previous conviction before this of suspect
Problem, to obtain a basic voluntary physiological response data (cardiac rate, blood pressure etc.)." crime relevant issues " are then such as
" are you either with or without vehicle steathily ", " 19 points of crime that night or so you where " Deng problem directly related with crime fact." control is asked
The basic theories of topic method " is that criminal generates bigger feelings when understanding specific surface to " control problem " when in face of " crime relevant issues "
Thread fluctuation is reflected as a series of cataclysm (such as heartbeat accelerates suddenly) of voluntary physiological response datas, and not guilty people is facing
When both problems, the variation of voluntary physiological reaction can be much smaller.Pass through millimeter as a result, by radar to tested personnel's monitoring information
Comparison to determine whether lying.
Using the lie detection system and method based on millimetre-wave radar of the invention, system millimeter waves radar and processing
Device emits millimeter wave to object of detecting a lie by millimetre-wave radar, and receives the millimeter wave of reflection, generates radar signal；And then benefit
The physiological data for generating object of detecting a lie according to radar signal with processor generates result of detecting a lie according to the physiological data.Thus real
Existing one kind does not contact human body, is not easy to be found by subject, avoids subject that the lie detecting method of unexpected emotional change occurs,
The accuracy that can make to detect a lie has than the prior art significantly to be promoted.
In this description, the present invention is described with reference to its specific embodiment.But it is clear that can still make
Various modifications and alterations are without departing from the spirit and scope of the invention.Therefore, the description and the appended drawings should be considered as illustrative
And not restrictive.
Claims (10)
1. a kind of lie detection system based on millimetre-wave radar, which is characterized in that the system includes:
Millimetre-wave radar for emitting millimeter wave to object of detecting a lie, and receives the millimeter wave of reflection, generates radar signal；
Processor, for generating the physiological data for object of detecting a lie according to the radar signal, and according to the physiological data
Generation is detected a lie result.
2. the lie detection system according to claim 1 based on millimetre-wave radar, which is characterized in that the millimetre-wave radar
Millimeter wave persistently is emitted to the chest of the object of detecting a lie in some cycles, and receives the millimeter wave of reflection, according to reflection
Millimeter wave generates the radar signal about object chest fluctuating data of detecting a lie.
3. the lie detection system according to claim 2 based on millimetre-wave radar, which is characterized in that the processor includes
Data generating unit and detect a lie unit, the data generating unit according to the radar signal generate described in detect a lie object
Physiological data, the unit of detecting a lie generate the result of detecting a lie according to the variation tendency of the physiological data.
4. the lie detection system according to claim 3 based on millimetre-wave radar, which is characterized in that the data generate single
Member is at least one data in the respiratory rate for object of detecting a lie according to the radar signal generation, heart rate, blood pressure.
5. the lie detection system according to claim 4 based on millimetre-wave radar, which is characterized in that the unit use of detecting a lie
In object of detecting a lie according at least one Data Detection in the respiratory rate, heart rate, blood pressure in a period
Inside whether there is mood swing, and whether is lied according to the testing result of the mood swing judgement object of detecting a lie.
6. a kind of lie detecting method based on millimetre-wave radar, which is characterized in that method includes the following steps:
(A) millimetre-wave radar is to object transmitting millimeter wave of detecting a lie, and receives the millimeter wave of reflection, generates radar signal；
(B) processor receives the radar signal, the physiological data for object of detecting a lie is generated according to the radar signal, and according to institute
The physiological data stated generates result of detecting a lie.
7. the lie detecting method according to claim 6 based on millimetre-wave radar, which is characterized in that step (A) tool
Body the following steps are included:
(A1) millimetre-wave radar described in persistently emits millimeter wave to the chest of the object of detecting a lie in some cycles, and receives
The millimeter wave of reflection；
(A2) millimetre-wave radar described in generates the radar about object chest fluctuating data of detecting a lie according to the millimeter wave received
Signal.
8. the lie detecting method according to claim 7 based on millimetre-wave radar, which is characterized in that the processor includes
Data generating unit and detect a lie unit, the step (B) specifically includes the following steps:
(B1) data generating unit described according to the radar signal generate described in detect a lie the physiological data of object；
(B2) unit of detecting a lie described in generates the result of detecting a lie according to the variation tendency of the physiological data.
9. the lie detecting method according to claim 8 based on millimetre-wave radar, which is characterized in that
The data generating unit be used for according to the radar signal generate described in detect a lie the respiratory rate of object, heart rate,
At least one data in blood pressure；
The unit of detecting a lie is for according at least one Data Detection in the respiratory rate, heart rate, blood pressure
Whether object of detecting a lie there is mood swing in a period of time, and detects a lie according to the judgement of the testing result of mood swing is described
Whether object lies.
10. the lie detecting method according to claim 9 based on millimetre-wave radar, which is characterized in that in described one
Between in section, the object of detecting a lie is required to answer " control problem " and " crime relevant issues ", and the unit of detecting a lie is used for
Object of detecting a lie according at least one Data Detection in the respiratory rate, heart rate, blood pressure is being required to answer institute
Mood swing when " the crime relevant issues " stated.
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