CN105158708A - Mobile intelligent terminal capable of detecting dynamic magnetic field and detection method of mobile intelligent terminal - Google Patents
Mobile intelligent terminal capable of detecting dynamic magnetic field and detection method of mobile intelligent terminal Download PDFInfo
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- CN105158708A CN105158708A CN201510510972.XA CN201510510972A CN105158708A CN 105158708 A CN105158708 A CN 105158708A CN 201510510972 A CN201510510972 A CN 201510510972A CN 105158708 A CN105158708 A CN 105158708A
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Abstract
The invention belongs to the magnetic field detection technical field and relates to a mobile intelligent terminal capable of detecting a dynamic magnetic field and a detection method of the mobile intelligent terminal. According to the mobile intelligent terminal and the detection method of the invention, the earth static magnetic field intensity of a current environment is detected through a geomagnetic sensor arranged in the mobile intelligent terminal, and the earth static magnetic field intensity of the current environment is stored; the real-time magnetic field intensity of the current environment is detected by a plurality of times, the earth static magnetic field intensity of the current environment which is detected in advance is removed from the real-time magnetic field intensity of the current environment which is detected every time through vector calculation, and therefore, a plurality of magnetic field intensities of the current environment can be obtained; and finally, the average value of the dynamic magnetic field intensities of the current environment can be obtained. With the mobile intelligent terminal and the detection method of the mobile intelligent terminal of the invention adopted, professional dynamic magnetic field detection can be applied to an ordinary mobile intelligent terminal, and the ordinary mobile intelligent terminal can detect the dynamic magnetic field, and the cost of dynamic magnetic field detection can be decreased, and the popularization of the dynamic magnetic field detection can be improved.
Description
Technical field
The present invention relates to magnetic field detection technology field, particularly relate to a kind of mobile intelligent terminal and the detection method thereof that detect dynamic magnetic field.
Background technology
The artificial electromagnetic radiation source of present society gets more and more, as household electrical appliance such as computer, TV, sound equipment, micro-wave oven, refrigerators, the communication apparatus such as mobile phone, facsimile recorder, operating office, the motor device such as high-tension bus-bar and motor, in addition, also have the Medical Devices etc. of aircraft, electric railroad, broadcast and television transmitting station, handset emissions base station, radar system, the machine room of power industry, satellite ground workstation, Dispatch and Command Center, applied microwave and X ray etc., the excessive electromagnetic radiation in daily life is very general.There are some researches show, magnetic field is harmful to human health statically, and the radiation leaks value exceeding the dynamic magnetic field of some strength can affect the healthy of people.Geomagnetic sensor becomes the standard configuration of intelligent terminal gradually, but the current geomagnetic sensor be equipped with at intelligent terminal is mainly used to the static magnetic fields such as test earth magnetism, for navigation and amusement etc., not for measuring dynamic magnetic field.
Summary of the invention
Technical matters to be solved by this invention is, provides a kind of mobile intelligent terminal and the detection method thereof that detect dynamic magnetic field, detects dynamic magnetic field by the geomagnetic sensor be arranged on intelligent terminal.The present invention is achieved in that
Detect a mobile intelligent terminal for dynamic magnetic field, comprise processor, storer, geomagnetic sensor and display screen;
The earth static magnetic field strength of the current environment measured for measuring the earth static magnetic field of current environment, and is stored into described storer by described geomagnetic sensor;
Described geomagnetic sensor also for measuring the real-time magnetic field of current environment according to default pendulous frequency, obtains multiple real-time magnetic field intensity of current environment;
Described processor is used for the earth static magnetic field strength according to vector calculus rule, each real-time magnetic field intensity of current environment being deducted the described current environment stored in storer, obtain multiple dynamic magnetic field intensity of current environment, and calculate the mean value of multiple dynamic magnetic field intensity of described current environment;
Described display screen is for showing described mean value.
Further, described processor is also for calculating maximal value and the minimum value of multiple dynamic magnetic field intensity of described current environment; Described display screen is also for showing described maximal value and minimum value.
Further, described mobile intelligent terminal also comprises alarm unit; Described processor also for described mean value and predetermined threshold value being compared, and when being greater than described threshold value when described mean value, controlling described alarm unit and sending warning.
Further, described geomagnetic sensor is three axle geomagnetic sensors, and the earth static magnetic field strength of described current environment and the real-time magnetic field intensity of current environment represent by the strength component of X, Y, Z tri-axles; Described processor is used for the strength component strength component of the X, Y, Z axis of each real-time magnetic field intensity of described current environment being deducted respectively the X, Y, Z axis of the earth static magnetic field strength of described current environment, obtain the strength component of the X, Y, Z axis of multiple dynamic magnetic field intensity of described current environment, calculate the vector of the strength component of the X, Y, Z axis of each dynamic magnetic field intensity of current environment again, obtain multiple dynamic magnetic field intensity of described current environment.
Further, described processor is connected with described geomagnetic sensor by IIC interface.
Mobile intelligent terminal detects a method for dynamic magnetic field, comprises the steps:
Steps A: the earth static magnetic field measuring current environment, and the earth static magnetic field strength storing the current environment measured;
Step B: the real-time magnetic field measuring current environment according to default pendulous frequency, obtains multiple real-time magnetic field intensity of current environment;
Step C: the earth static magnetic field strength according to vector calculus rule, each real-time magnetic field intensity of current environment being deducted the described current environment of storage, obtain multiple dynamic magnetic field intensity of current environment, and calculate the mean value of multiple dynamic magnetic field intensity of described current environment;
Step D: show described mean value.
Further, described method also comprises the steps:
Step e: the maximal value and the minimum value that calculate multiple dynamic magnetic field intensity of described current environment, and show described maximal value and minimum value.
Further, described method also comprises the steps:
Step F: described mean value and predetermined threshold value are compared, and sending warning when described mean value is greater than described threshold value.
Further, the earth static magnetic field strength of described current environment and the real-time magnetic field intensity of current environment represent by the strength component of X, Y, Z tri-axles; In described step B, the strength component of the X, Y, Z axis of each real-time magnetic field intensity of described current environment is deducted respectively the strength component of the X, Y, Z axis of the earth static magnetic field strength of described current environment, obtain the strength component of the X, Y, Z axis of multiple dynamic magnetic field intensity of described current environment, calculate the vector of the strength component of the X, Y, Z axis of each dynamic magnetic field intensity of current environment again, obtain multiple dynamic magnetic field intensity of described current environment.
Further, measure current environment earth static magnetic field strength with measurement current environment real-time magnetic field intensity time described mobile intelligent terminal position and towards consistent.
Compared with prior art, the present invention first detects the earth static magnetic field strength of current environment by the geomagnetic sensor arranged in mobile intelligent terminal and stores, the real-time magnetic field intensity of repeated detection current environment again, and from the real-time magnetic field intensity of the current environment at every turn detected, the earth static magnetic field strength of the current environment detected in advance is removed by vector calculus, thus obtain multiple dynamic magnetic field intensity of current environment, the final dynamic magnetic field average strength obtaining current environment.The dynamic magnetic field of specialty can detect and be applied on common mobile intelligent terminal by the present invention, realizes utilizing common mobile intelligent terminal to detect the object of dynamic magnetic field, can reduce the testing cost of dynamic magnetic field, improve the popularization that dynamic magnetic field detects.
Accompanying drawing explanation
Fig. 1: the composition schematic diagram detecting the mobile intelligent terminal of dynamic magnetic field provided by the invention;
Fig. 2: mobile intelligent terminal provided by the invention detects the method flow schematic diagram of dynamic magnetic field.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.
The ultimate principle that the present invention measures dynamic magnetic field intensity is, geomagnetic sensor can detect the magnetic field intensity of certain limit, the earth static magnetic field strength in same place is almost constant, and dynamic magnetic field radiation intensity and radiation source from test point distance inversely, distance is far away, and the decay of dynamic magnetic field radiation intensity is larger.As shown in Figure 1, the mobile intelligent terminal of dynamic magnetic field provided by the invention comprises processor 1, storer 4, geomagnetic sensor 2 and display screen 3.Mobile intelligent terminal can be smart mobile phone, panel computer etc.
The earth static magnetic field strength of the current environment measured for measuring the earth static magnetic field of current environment, and is stored into storer 4 by geomagnetic sensor 2.Geomagnetic sensor 2 also for measuring the real-time magnetic field of current environment according to default pendulous frequency, obtains multiple real-time magnetic field intensity of current environment.The dynamic magnetic field intensity of the earth static magnetic field strength+current environment of the real-time magnetic field intensity=current environment of current environment.Dynamic magnetic field intensity is generally launched except extratellurian emission of magnetic field source by various, and as various communication apparatus, household electrical appliance, electrical equipment etc., its magnetic field is constantly change.The dynamic magnetic field exceeding some strength knows from experience the certain harm of generation to people.Processor 1 is for deducting the earth static magnetic field strength of the current environment stored in storer 4 by each real-time magnetic field intensity of current environment according to vector calculus rule, obtain multiple dynamic magnetic field intensity of current environment, and calculate the mean value of multiple dynamic magnetic field intensity of this current environment.Display screen 3 is for showing mean value.
In the present invention, geomagnetic sensor 2 selects three axle geomagnetic sensors of band IIC interface, and processor 1 is connected with geomagnetic sensor 2 by IIC interface.The X/Y axle sensitivity of geomagnetic sensor 2 is 0.15UT, and Z axis sensitivity is 0.25UT, and maximum measurement range is positive and negative 48Gauss.(1Gauss=100UT, 1Gauss=1000mGauss), meets the area requirement of the about 15mGauss-200mGauss of magnetic field radiation value measuring terrestrial magnetic field 400mGauss and common electronic equipment.Built-in 16 analog to digital conversion circuits of this three axles geomagnetic sensor, have degree of precision, and the time completing a sampled measurements is 1ms, can meet the real-time demand that user measures.Note, when measuring the dynamic magnetic field of current environment, the position of mobile intelligent terminal with towards should be consistent with when measuring the earth static magnetic field of current environment, geomagnetic sensor 2 is fixedly mounted in mobile intelligent terminal, its essence is that the position and direction of geomagnetic sensor 2 during the dynamic magnetic field with measurement current environment when guaranteeing to measure the earth static magnetic field of current environment is consistent, the earth static magnetic field strength in the real-time magnetic field intensity of the current environment that such guarantee measures is consistent with the earth static magnetic field strength directly measured.
When adopting three axle geomagnetic sensors, the earth static magnetic field strength of current environment and the real-time magnetic field intensity of current environment represent by the strength component of X, Y, Z tri-axles.The strength component of the X, Y, Z axis of each real-time magnetic field intensity of current environment is deducted the strength component of the X, Y, Z axis of the earth static magnetic field strength of current environment by processor 1 respectively, obtain the strength component of the X, Y, Z axis of multiple dynamic magnetic field intensity of current environment, calculate the vector of the strength component of the X, Y, Z axis of each dynamic magnetic field intensity of current environment again, obtain multiple dynamic magnetic field intensity of current environment.
Mobile intelligent terminal also comprises alarm unit 5, and mean value and predetermined threshold value compare by processor 1, and when being greater than threshold value when mean value, controlling alarm unit 5 and sending warning.Alarm form can adopt sound and light alarm.
Processor 1 also can calculate maximal value and the minimum value of multiple dynamic magnetic field intensity of current environment.Display screen 3 shows this maximal value and minimum value, facilitates user to understand the strength range of current environment dynamic magnetic field leakage.
Processor 1 can adopt SOC (Systemonchip, system level chip or SOC (system on a chip)), SOC is installed the process of measurement of dynamic magnetic field, realize the earth static magnetic field strength data of the current environment that geomagnetic sensor 2 measures and the computing of real-time magnetic field intensity data, generate the mean value, maximal value, minimum value etc. of the dynamic magnetic field intensity data of current environment, simultaneously according to the threshold value preset.User checks the information such as mean value, maximal value, minimum value of dynamic magnetic field intensity by process of measurement interface.Mobile intelligent terminal can adopt Android mobile intelligent terminal, and correspondingly, process of measurement adopts APK program format.
According to above-mentioned mobile intelligent terminal, present invention also offers the method that above-mentioned mobile intelligent terminal detects dynamic magnetic field.As shown in Figure 2, the method comprises the steps:
Steps A: the earth static magnetic field measuring current environment, and the earth static magnetic field strength storing the current environment measured;
Step B: the real-time magnetic field measuring current environment according to default pendulous frequency, obtains multiple real-time magnetic field intensity of current environment;
Step C: the earth static magnetic field strength according to vector calculus rule, each real-time magnetic field intensity of current environment being deducted the current environment of storage, obtains multiple dynamic magnetic field intensity of current environment, and calculates the mean value of multiple dynamic magnetic field intensity of current environment;
Step D: display mean value.
Method also comprises the steps:
Step e: the maximal value and the minimum value that calculate multiple dynamic magnetic field intensity of current environment, and show maximal value and minimum value.
Method also comprises the steps:
Step F: mean value and predetermined threshold value are compared, and sending warning when mean value is greater than threshold value.
The earth static magnetic field strength of current environment and the real-time magnetic field intensity of current environment represent by the strength component of X, Y, Z tri-axles; In step B, the strength component of the X, Y, Z axis of each real-time magnetic field intensity of current environment is deducted respectively the strength component of the X, Y, Z axis of the earth static magnetic field strength of current environment, obtain the strength component of the X, Y, Z axis of multiple dynamic magnetic field intensity of current environment, calculate the vector of the strength component of the X, Y, Z axis of each dynamic magnetic field intensity of current environment again, obtain multiple dynamic magnetic field intensity of current environment.
Measure current environment earth static magnetic field strength with measurement current environment real-time magnetic field intensity time mobile intelligent terminal position and towards consistent.Geomagnetic sensor 2 is fixedly mounted in mobile intelligent terminal, its essence is that the position and direction of geomagnetic sensor 2 during the dynamic magnetic field with measurement current environment when guaranteeing to measure the earth static magnetic field of current environment is consistent, the earth static magnetic field strength in the real-time magnetic field intensity of the current environment that such guarantee measures is consistent with the earth static magnetic field strength directly measured.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. can detect a mobile intelligent terminal for dynamic magnetic field, it is characterized in that, comprise processor, storer, geomagnetic sensor and display screen;
The earth static magnetic field strength of the current environment measured for measuring the earth static magnetic field of current environment, and is stored into described storer by described geomagnetic sensor;
Described geomagnetic sensor also for measuring the real-time magnetic field of current environment according to default pendulous frequency, obtains multiple real-time magnetic field intensity of current environment;
Described processor is used for the earth static magnetic field strength according to vector calculus rule, each real-time magnetic field intensity of current environment being deducted the described current environment stored in storer, obtain multiple dynamic magnetic field intensity of current environment, and calculate the mean value of multiple dynamic magnetic field intensity of described current environment;
Described display screen is for showing described mean value.
2. can detect the mobile intelligent terminal of dynamic magnetic field as claimed in claim 1, it is characterized in that, described processor is also for calculating maximal value and the minimum value of multiple dynamic magnetic field intensity of described current environment; Described display screen is also for showing described maximal value and minimum value.
3. can detect the mobile intelligent terminal of dynamic magnetic field as claimed in claim 1, it is characterized in that, also comprise alarm unit; Described processor also for described mean value and predetermined threshold value being compared, and when being greater than described threshold value when described mean value, controlling described alarm unit and sending warning.
4. can detect the mobile intelligent terminal of dynamic magnetic field as claimed in claim 1, it is characterized in that, described geomagnetic sensor is three axle geomagnetic sensors, and the earth static magnetic field strength of described current environment and the real-time magnetic field intensity of current environment represent by the strength component of X, Y, Z tri-axles; Described processor is used for the strength component strength component of the X, Y, Z axis of each real-time magnetic field intensity of described current environment being deducted respectively the X, Y, Z axis of the earth static magnetic field strength of described current environment, obtain the strength component of the X, Y, Z axis of multiple dynamic magnetic field intensity of described current environment, calculate the vector of the strength component of the X, Y, Z axis of each dynamic magnetic field intensity of current environment again, obtain multiple dynamic magnetic field intensity of described current environment.
5. can detect the mobile intelligent terminal of dynamic magnetic field as claimed in claim 1, it is characterized in that, described processor is connected with described geomagnetic sensor by IIC interface.
6. mobile intelligent terminal detects a method for dynamic magnetic field, it is characterized in that, comprises the steps:
Steps A: the earth static magnetic field measuring current environment, and the earth static magnetic field strength storing the current environment measured;
Step B: the real-time magnetic field measuring current environment according to default pendulous frequency, obtains multiple real-time magnetic field intensity of current environment;
Step C: the earth static magnetic field strength according to vector calculus rule, each real-time magnetic field intensity of current environment being deducted the described current environment of storage, obtain multiple dynamic magnetic field intensity of current environment, and calculate the mean value of multiple dynamic magnetic field intensity of described current environment;
Step D: show described mean value.
7. mobile intelligent terminal as claimed in claim 6 detects the method for dynamic magnetic field, it is characterized in that, also comprises the steps:
Step e: the maximal value and the minimum value that calculate multiple dynamic magnetic field intensity of described current environment, and show described maximal value and minimum value.
8. mobile intelligent terminal as claimed in claim 6 detects the method for dynamic magnetic field, it is characterized in that, also comprises the steps:
Step F: described mean value and predetermined threshold value are compared, and sending warning when described mean value is greater than described threshold value.
9. mobile intelligent terminal as claimed in claim 6 detects the method for dynamic magnetic field, it is characterized in that, the earth static magnetic field strength of described current environment and the real-time magnetic field intensity of current environment represent by the strength component of X, Y, Z tri-axles; In described step B, the strength component of the X, Y, Z axis of each real-time magnetic field intensity of described current environment is deducted respectively the strength component of the X, Y, Z axis of the earth static magnetic field strength of described current environment, obtain the strength component of the X, Y, Z axis of multiple dynamic magnetic field intensity of described current environment, calculate the vector of the strength component of the X, Y, Z axis of each dynamic magnetic field intensity of current environment again, obtain multiple dynamic magnetic field intensity of described current environment.
10. mobile intelligent terminal as claimed in claim 6 detects the method for dynamic magnetic field, it is characterized in that, during the real-time magnetic field intensity of the earth static magnetic field strength measuring current environment with measurement current environment described mobile intelligent terminal position and towards consistent.
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Cited By (1)
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Application publication date: 20151216 |