CN113433376B - Intelligent test pencil based on three channels and use method thereof - Google Patents
Intelligent test pencil based on three channels and use method thereof Download PDFInfo
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- CN113433376B CN113433376B CN202110985472.7A CN202110985472A CN113433376B CN 113433376 B CN113433376 B CN 113433376B CN 202110985472 A CN202110985472 A CN 202110985472A CN 113433376 B CN113433376 B CN 113433376B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/145—Indicating the presence of current or voltage
- G01R19/155—Indicating the presence of voltage
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/06—Measuring leads; Measuring probes
- G01R1/067—Measuring probes
- G01R1/06711—Probe needles; Cantilever beams; "Bump" contacts; Replaceable probe pins
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06N—COMPUTING ARRANGEMENTS BASED ON SPECIFIC COMPUTATIONAL MODELS
- G06N3/00—Computing arrangements based on biological models
- G06N3/02—Neural networks
- G06N3/08—Learning methods
Abstract
The application discloses an intelligent test pencil based on three channels and a using method thereof, wherein the intelligent test pencil comprises a first non-contact test pencil module, a second contact test pencil module, a control chip, a change-over switch, a test pencil point, a first lead and a second lead; one end of the first lead is electrically connected with the second contact type electricity testing module, and the other end of the first lead is electrically connected with the first position in a fitting mode; one end of the second lead is electrically connected with the second contact type electricity testing module, and the other end of the second lead is electrically connected with a second position in a fitting mode; the change-over switch is used for controlling the circuit between the first lead and the second contact type electricity testing module to be opened and closed, and the change-over switch is used for controlling the circuit between the second lead and the second contact type electricity testing module to be opened and closed; the control chip stores the physiological characteristic data of the user, the first position and the second position in advance, so that the reliability and the accuracy of low-voltage detection by adopting the test pencil are improved.
Description
Technical Field
The application relates to the field of test pencil, in particular to an intelligent test pencil based on three channels and a using method thereof.
Background
The traditional test pencil is simple in structure and generally comprises a pencil head, a safety resistor, a neon tube capable of emitting light, an electrode for palm or finger contact, a spring and the like which are connected in series. If the neon tube emits light during the test, the tested position is electrified.
In the use process of the traditional test pencil, a default premise is that the human impedance is ignored, because the human impedance is higher than the safety resistance under the normal condition (under the high-voltage condition). However, in the accurate detection of low voltage, the body impedance cannot be ignored because the body impedance shows a much higher resistance value in the low voltage state than in the high voltage state (especially, dry skin has a higher resistance value in the low voltage state). And the human body impedance can fluctuate dynamically along with the human body state, so that the impedance cannot be ignored in the low-voltage test.
Therefore, the conventional test pencil can only be used for testing high voltage, but cannot be used for accurately detecting low voltage (not only accuracy but also reliability cannot be guaranteed).
Disclosure of Invention
The application provides an intelligence test pencil based on three-way, include: the power supply device comprises a first non-contact type electricity testing module, a second contact type electricity testing module, a control chip, a change-over switch, an electricity testing pen point, a first lead and a second lead;
the first contactless electricity testing module comprises an induction antenna, a signal amplifying circuit and a battery, wherein the induction antenna is used for inducing induction voltage relative to a position to be tested under the contactless condition, the amplifying circuit is used for amplifying the induction voltage, and the battery is used for supplying power to the signal amplifying circuit;
the second contact type electricity testing module is used for detecting the voltage of the position to be tested; the second contact type electricity testing module is electrically connected with the electricity testing pen point;
the test pencil head is made of a conductive material and is used for electrically connecting a position to be tested;
one end of the first lead is electrically connected with the second contact type electricity testing module, and the other end of the first lead is electrically connected with a first position of the skin of a user in a fitting mode;
one end of the second lead is electrically connected with the second contact type electricity testing module, and the other end of the second lead is electrically connected with a second position of the skin of the user in a fitting mode; wherein the second location is different from the first location;
the control chip is in signal connection with the first contactless electricity testing module; the control chip is in signal connection with the second contact type electricity testing module; the control chip is in signal connection with the change-over switch;
the change-over switch is used for controlling the circuit between the first lead and the second contact type electricity testing module to be opened and closed, and the change-over switch is used for controlling the circuit between the second lead and the second contact type electricity testing module to be opened and closed;
the control chip stores physiological characteristic data of a user, the first position and the second position in advance;
the control chip is configured to:
performing first electricity testing treatment on the position to be tested by adopting the first non-contact electricity testing module to obtain a first voltage value;
judging whether the first voltage value is smaller than a preset voltage threshold value or not, and judging whether the first voltage value is 0 or not;
if the first voltage value is smaller than a preset voltage threshold value and not 0, after the test pencil point contacts the position to be measured, controlling the first lead wire to be conducted with the second contact type test module through the change-over switch, and performing second electricity measurement processing by using the second contact type test module to obtain a second voltage value;
the second lead is controlled to be conducted with the second contact type electricity testing module through the change-over switch, and third electricity testing processing is carried out through the second contact type electricity testing module to obtain a third voltage value;
inputting the second voltage value, the third voltage value, the physiological characteristic data, the first position and the second position into a preset voltage estimation model for processing to obtain an estimated voltage value output by the voltage estimation model; the voltage estimation model is trained in a supervised learning mode based on a neural network model.
Further, the training process of the voltage estimation model comprises the following steps:
the physiological data acquisition processing is carried out on the sample crowd during the electricity testing process by using the intelligent test pencil to obtain a sample physiological data set of the sample crowd;
obtaining a second sample voltage set, a third sample voltage value set, a first sample position set and a second sample position set which are obtained in the process that the intelligent test pencil is used by a sample population for testing electricity; the electricity testing process of the sample population comprises a first sample electricity testing and a second sample electricity testing by adopting a second contact type electricity testing module, wherein a second voltage set of the sample is a set of voltage values obtained by the first sample electricity testing; the third voltage set of the sample is a set of voltage values obtained by testing the electricity of the second sample; the first sample position set is a set of positions where the first lead electrically connects the skin when the sample is tested for the first time; the second sample position set is a set of positions where the second lead electrically connects the skin when the sample is tested for the second time;
acquiring the real voltage value of the measured position of the sample population when the intelligent test pencil is used for measuring electricity;
constructing a plurality of sample data groups consisting of the sample physiological data set, the sample second voltage set, the sample third voltage value set, the sample first position set, the sample second position set and the real voltage value according to the mutual corresponding relation;
dividing the plurality of sample data groups into a plurality of training data groups and a plurality of verification data groups according to a specified proportion;
inputting the training data sets into a preset neural network model for training to obtain a preliminary voltage estimation model;
adopting the plurality of verification data groups to the preliminary voltage estimation model to obtain a verification result, and judging whether the verification result is passed;
and if the verification result is that the verification is passed, taking the preliminary voltage estimation model as a final voltage estimation model.
Further, the first position is a finger, a palm center or a palm back; the second position is a shoulder.
Further, the intelligent test pencil is used for detecting alternating voltage, and the voltage threshold value is equal to 24 volts.
Furthermore, the physiological characteristic data of the user, which is pre-stored by the control chip, is updated and recorded according to a preset time period; when the user uses the intelligent test pencil, the first position and the second position cannot move.
The application provides a use method of intelligence test pencil, intelligence test pencil be above-mentioned any one intelligence test pencil, use method includes:
s1, the control chip judges whether the physiological characteristic data is updated in a preset time period;
s2, if the physiological characteristic data are updated in the preset time period, the user attaches the first lead to the skin at the first position and attaches the second lead to the skin at the second position;
s3, inputting the first position and the second position into the control chip by a user, and enabling the intelligent test pencil to approach the position to be tested in a non-contact mode;
s4, the control chip performs first electricity testing processing through the first contactless electricity testing module to obtain a first voltage value;
s5, the control chip judges whether the first voltage value is smaller than a preset voltage threshold value and judges whether the first voltage value is 0;
s6, if the first voltage value is smaller than a preset voltage threshold value and the first voltage value is not 0, enabling a user to enable the test pencil point to contact the position to be tested;
s7, the control chip controls the first lead wire to be conducted with the second contact type electricity testing module through the change-over switch, and second electricity testing processing is carried out through the second contact type electricity testing module to obtain a second voltage value;
s8, the control chip controls the second lead wire to be conducted with the second contact type electricity testing module through the change-over switch, and third electricity testing processing is carried out through the second contact type electricity testing module to obtain a third voltage value;
s9, the control chip inputs the second voltage value, the third voltage value, the physiological characteristic data, the first position and the second position into a preset voltage estimation model for processing to obtain an estimated voltage value output by the voltage estimation model; the voltage estimation model is trained in a supervised learning mode based on a neural network model.
The intelligent test pencil based on the three channels comprises a first non-contact test pencil module, a second contact test pencil module, a control chip, a change-over switch, a test pencil head, a first lead and a second lead; one end of the first lead is electrically connected with the second contact type electricity testing module, and the other end of the first lead is electrically connected with a first position of the skin of a user in a fitting mode; one end of the second lead is electrically connected with the second contact type electricity testing module, and the other end of the second lead is electrically connected with a second position of the skin of the user in a fitting mode; wherein the second location is different from the first location; the control chip is in signal connection with the first contactless electricity testing module; the control chip is in signal connection with the second contact type electricity testing module; the control chip is in signal connection with the change-over switch; the change-over switch is used for controlling the circuit between the first lead and the second contact type electricity testing module to be opened and closed, and the change-over switch is used for controlling the circuit between the second lead and the second contact type electricity testing module to be opened and closed; the control chip stores the physiological characteristic data of the user, the first position and the second position in advance, so that the reliability and the accuracy of low-voltage detection by adopting the test pencil are improved.
Wherein, this application's characteristics lie in:
the problem that the influence of the human body impedance in the test cannot be determined by the traditional test pencil is solved, and the low-voltage accurate detection is realized. Moreover, the user can hold the intelligent test pencil to carry out rapid test, the operation is smooth, comprehensive test detection on a precision system is facilitated, and the overall detection efficiency is improved.
Drawings
Fig. 1 is a longitudinal section structure diagram of a second contact type electricity testing module of an intelligent three-way-based test pencil according to an embodiment of the present application;
fig. 2 is a schematic flow chart illustrating a method for using an intelligent test pencil based on three channels according to an embodiment of the present application;
the implementation, functional features and advantages of the objectives of the present application will be further described with reference to the accompanying drawings;
the reference numbers are as follows:
1 test pencil head, 2 insulating casings, 3 springs, 4 concentric resistors, 5 current-limiting resistors, 6 shunt resistors, 7 identification electrodes, 8 current detectors, 9 springs, 10 rear covers and 11 hand-touch electrodes.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
The embodiment of the application provides an intelligence test pencil based on three-way, include: the power supply device comprises a first non-contact type electricity testing module, a second contact type electricity testing module, a control chip, a change-over switch, an electricity testing pen point, a first lead and a second lead;
the first contactless electricity testing module comprises an induction antenna, a signal amplifying circuit and a battery, wherein the induction antenna is used for inducing induction voltage relative to a position to be tested under the contactless condition, the amplifying circuit is used for amplifying the induction voltage, and the battery is used for supplying power to the signal amplifying circuit;
the second contact type electricity testing module is used for detecting the voltage of the position to be tested; the second contact type electricity testing module is electrically connected with the electricity testing pen point;
the test pencil head is made of a conductive material and is used for electrically connecting a position to be tested;
one end of the first lead is electrically connected with the second contact type electricity testing module, and the other end of the first lead is electrically connected with a first position of the skin of a user in a fitting mode;
one end of the second lead is electrically connected with the second contact type electricity testing module, and the other end of the second lead is electrically connected with a second position of the skin of the user in a fitting mode; wherein the second location is different from the first location;
the control chip is in signal connection with the first contactless electricity testing module; the control chip is in signal connection with the second contact type electricity testing module; the control chip is in signal connection with the change-over switch;
the change-over switch is used for controlling the circuit between the first lead and the second contact type electricity testing module to be opened and closed, and the change-over switch is used for controlling the circuit between the second lead and the second contact type electricity testing module to be opened and closed;
the control chip stores physiological characteristic data of a user, the first position and the second position in advance;
the control chip is configured to:
performing first electricity testing treatment on the position to be tested by adopting the first non-contact electricity testing module to obtain a first voltage value;
judging whether the first voltage value is smaller than a preset voltage threshold value or not, and judging whether the first voltage value is 0 or not;
if the first voltage value is smaller than a preset voltage threshold value and not 0, after the test pencil point contacts the position to be measured, controlling the first lead wire to be conducted with the second contact type test module through the change-over switch, and performing second electricity measurement processing by using the second contact type test module to obtain a second voltage value;
the second lead is controlled to be conducted with the second contact type electricity testing module through the change-over switch, and third electricity testing processing is carried out through the second contact type electricity testing module to obtain a third voltage value;
inputting the second voltage value, the third voltage value, the physiological characteristic data, the first position and the second position into a preset voltage estimation model for processing to obtain an estimated voltage value output by the voltage estimation model; the voltage estimation model is trained in a supervised learning mode based on a neural network model.
The utility model provides an intelligence test pencil based on three-way, three-way wherein, refer to the first way that is provided by first contactless test electricity module, by the second way that second contact test electricity module, first lead wire, human part (most), earth constitute, by the third way that second contact test electricity module, second lead wire, another part of human body, earth constitute. The three paths have different functions, and the first path is actually pre-detected to determine whether high voltage risk exists, and when the voltage at the detection position is too high, potential safety hazard still exists by using the test pencil (especially, the application is preferably applied to a low voltage detection environment). The second path and the third path respectively detect two voltage values preliminarily, it should be noted that, because the influence of the human impedance is not eliminated yet at this time, the second path and the third path are detected by using a conventional test pencil mode (i.e. the second contact test module is equivalent to a conventional test pencil), the two voltage values preliminarily detected are actually the voltage values ignoring the human impedance (i.e. the voltage values corresponding to the second contact test module), and because the human impedance is different in the second path and the third path, the two voltage values are different because the human body part of the access path is different, and the two voltage values become the basis for determining the real voltage of the position to be detected.
The first contactless test pencil module is actually a traditional induction test pencil; the second contactless test pencil is actually a conventional contact test pencil.
The principle that the real voltage of the position to be measured can be determined by adopting two preliminarily detected voltage values is introduced as follows: although the human body impedance varies dynamically with the state of the human body and is also related to the presence of a high or low voltage environment, the inventors of the present application have found that the human body impedance is determined in a certain exact state, i.e., in a case where both the state of the human body and the voltage are constant. The problem is therefore how to determine the body impedance at that time. The inventor of the present application has also found that the impedance of the human body when the earth is accessed from different positions of the human body is determined, and has a certain numerical relationship (although the influence factors of the numerical relationship are many), for example, the impedance of the human body when the human body is introduced from a finger, when the human body enters the earth, and the impedance of the human body when the human body enters the earth, when the impedance of the human body is introduced from a shoulder, have a certain numerical relationship. By this, the detection of the true voltage of the position to be measured can be realized.
More specifically, from the related data in the second path and the third path, a system of equations of three-dimensional equations can be constructed, where X = U1+ U1Y1/R, X = U2+ U2Y2/R, and Y1= KY2, where X is an actual voltage value of the position to be measured, U1 is a second voltage value, R is a resistance corresponding to the second contact type test module, Y1 is a resistance value reflected by the human body impedance in the second path, U2 is a third voltage value, Y2 is a resistance value reflected by the human body impedance in the third path, and K is a numerical relationship between Y1 and Y2. Wherein, as long as the K value is determined, the actual voltage of the position to be measured can be calculated, thereby solving the problem of human body impedance.
It can be known from the foregoing that K is directly related to a human body, which has an exact corresponding relationship, so that the present application adopts a voltage estimation model based on a neural network model to determine a K value (of course, the K value corresponds to a hidden layer parameter in the model and is not directly reflected in input or output), and further, a relatively accurate voltage value can be estimated.
Therefore, the method and the device convert specific data for determining the human body impedance into a mode of determining the numerical relation between the human body impedances corresponding to different positions, solve the problem of the human body impedance, and improve the accuracy and the reliability of electricity testing. Of course, it should be noted that the accuracy and reliability referred to in the present application are both relative to the conventional test pencil, and have the advantages of lower cost, more convenient operation and being beneficial to batch operation relative to the more accurate test instrument.
The first contactless electricity test module is equivalent to a traditional inductive electricity test pen, and the principle of the contactless electricity test module is that an inductive antenna is used for inducing an inductive current or an inductive voltage in an electromagnetic induction mode (the position to be detected should be alternating current), the inductive voltage is amplified through a signal amplification circuit, a first voltage value can be obtained (the voltage value can be reflected by a material sensitive to voltage), the signal amplification circuit can be composed of a plurality of triodes (one end of the inductive antenna is suspended, the other end of the inductive antenna is connected with the B pole of the first triode), and the battery supplies power, so that the redundant description is omitted.
The second contact test pencil is equivalent to a conventional contact test pencil, and the structure of the second contact test pencil is, for example, a safety resistor, a voltage test circuit (equivalent to a voltage value detection module of the digital display test pencil), a contact electrode, and the like, which are not described herein again. Therefore, the voltage value detected by the second contact type test module actually refers to the voltage loaded across the second contact type test module.
Further, the application also designs a special second contact type electricity measuring module, the structure diagram of the longitudinal section of which is shown in fig. 1 (namely, fig. 1 only shows the second contact type electricity measuring module part, but not the first non-contact type electricity measuring module part), and the second contact type electricity measuring module comprises 2 insulating shells, 3 springs, 4 concentric resistors, 5 current limiting resistors, 6 shunt resistors, 7 identification electrodes, 8 current detectors, 9 springs, 10 rear covers and 11 hand touch electrodes. In fig. 1, the first lead and the second lead are not shown.
In the insulating shell, the test pencil head, the current-limiting resistor, the current detector and the hand touch electrode are electrically connected, and a shunt resistor branch is arranged to ensure that the test pencil head is electrically connected with one end of a shunt resistor, and the other end of the shunt resistor is electrically connected with an identification electrode which can be contacted with a human body. When a hand contacts the identification electrode and the hand touch electrode simultaneously, the shunt resistor is connected in parallel with the test pencil head, the current limiting resistor, the current detector and the hand touch electrode circuit for testing, the hand contacts the hand touch electrode only, the current detector detects large current (or the voltage detector is replaced by the voltage detector, and then large voltage is detected), and the detected object is electrified. When a hand contacts the hand touch electrode and the identification electrode simultaneously, if the detected object has no dangerous high potential, the internal resistance of the potential source is very large, so that the charged potential of the detected object is greatly reduced, the current detector detects small current (or the voltage detector is replaced by the voltage detector, so that the small voltage is detected), if the detected object has dangerous electric shock voltage, the internal resistance is small, the charged potential of the detected object is hardly reduced by connecting the shunt resistor, so that the current detector keeps large current, and the aim of distinguishing the safe voltage is fulfilled.
The test pencil head, the current-limiting resistor and the current detector are connected with the hand-touch electrode in series, the test pencil head is connected with one end of the shunt resistor, and the other end of the shunt resistor is connected with the recognition electrode. The resistance of the shunt resistor is not less than that of the current-limiting resistor, preferably 1-2 times that of the current-limiting resistor.
The electric measuring pen head is extended into the cavity at one end of the insulating shell and is contacted with the spring, the other end of the spring is contacted with the concentric resistor, the concentric resistor is E-shaped in longitudinal section, the current-limiting resistor of the middle cylindrical part is higher than the cylindrical part used as the shunt resistor, so that one end of the current detector is not contacted with the shunt resistor when being contacted with the current-limiting resistor, one end of the spring is contacted with the current detector, the other end of the spring is contacted with the hand-touch electrode on the rear cover, and the spring pressure ensures that all elements are reliably electrically connected.
Therefore, by adopting the second non-contact electricity testing module, dangerous electric shock voltage or non-dangerous induced potential can be conveniently distinguished, and the safety is further improved.
In addition, the larger the contact area of the lead with the skin, the better the electrical conductivity, so the ends of the first and second leads, which are in contact with the skin, are each preferably of a sheet-like structure so as to be able to conform to the skin of the user.
The second lead wire has a different length from the first lead wire, and the length of the second lead wire is greater than that of the first lead wire.
The control chip is, for example, a single chip microcomputer, and is used for receiving signals of the first contactless electricity testing module and the second contactless electricity testing module, and controlling the first contactless electricity testing module, the second contactless electricity testing module and the change-over switch.
The control chip stores the physiological characteristic data of the user, the first position and the second position in advance, which are input as part of a subsequent voltage estimation model, because the physiological characteristic data of the user, the first position and the second position are factors influencing the human body impedance, or influencing the corresponding numerical relationship among the human body impedances at different positions.
And then three paths are utilized to carry out three times of electricity testing treatment, and the estimated voltage value is obtained by means of a voltage estimation model and reflects the actual voltage value of the position to be measured.
In addition, it should be particularly noted that the present application adopts a voltage estimation model based on a neural network model to estimate the voltage, rather than calculating different influencing parameters in advance to form an exact model to calculate the voltage value considering the impedance of the human body, because:
1. the human body impedance is different in performance under different voltage environments and different physiological data, so that different influence parameters are difficult to calculate in advance;
2. in the process of real electricity testing, the voltage of the position to be tested is unknown, the fluctuation of the human impedance is large, and the generation of an exact model is not facilitated;
3. compared with the absolute value of the human body impedance, the numerical relation corresponding to the human body impedance among different positions is more determined, so that the voltage estimation model trained by using the neural network model has more advantages;
4. the voltage estimation model based on the neural network model can continue to be trained, and when the voltage estimation model is specific to a certain user, the accuracy can continuously rise in the continuous training process, which is an obvious advantage.
The neural network model may be any feasible model, such as a BP neural network model, a convolutional neural network model, a long-term and short-term memory network model, a residual error network model, and so on.
The first contactless electricity testing module is used for carrying out first electricity testing processing on a position to be tested so as to obtain a first voltage value; and judging whether the first voltage value is smaller than a preset voltage threshold value or not, and judging whether the first voltage value is 0 or not, wherein the purpose is to determine whether the voltage environment is too high or not and whether the voltage environment is alternating current or not so as to reduce potential safety hazards.
Further, the training process of the voltage estimation model comprises the following steps:
the physiological data acquisition processing is carried out on the sample crowd during the electricity testing process by using the intelligent test pencil to obtain a sample physiological data set of the sample crowd;
obtaining a second sample voltage set, a third sample voltage value set, a first sample position set and a second sample position set which are obtained in the process that the intelligent test pencil is used by a sample population for testing electricity; the electricity testing process of the sample population comprises a first sample electricity testing and a second sample electricity testing by adopting a second contact type electricity testing module, wherein a second voltage set of the sample is a set of voltage values obtained by the first sample electricity testing; the third voltage set of the sample is a set of voltage values obtained by testing the electricity of the second sample; the first sample position set is a set of positions where the first lead electrically connects the skin when the sample is tested for the first time; the second sample position set is a set of positions where the second lead electrically connects the skin when the sample is tested for the second time;
acquiring the real voltage value of the measured position of the sample population when the intelligent test pencil is used for measuring electricity;
constructing a plurality of sample data groups consisting of the sample physiological data set, the sample second voltage set, the sample third voltage value set, the sample first position set, the sample second position set and the real voltage value according to the mutual corresponding relation;
dividing the plurality of sample data groups into a plurality of training data groups and a plurality of verification data groups according to a specified proportion;
inputting the training data sets into a preset neural network model for training to obtain a preliminary voltage estimation model;
adopting the plurality of verification data groups to the preliminary voltage estimation model to obtain a verification result, and judging whether the verification result is passed;
and if the verification result is that the verification is passed, taking the preliminary voltage estimation model as a final voltage estimation model.
Thereby obtaining a voltage estimation model which is qualified for voltage prediction. The sample data collection needs to correspond to data input by the voltage estimation model during use, and therefore the sample data set needs to comprise a sample physiological data set, a sample second voltage set, a sample third voltage value set, a sample first position set and a sample second position set. The real voltage value is used as a corresponding label for the sample data, so the training process of the application belongs to the training with supervised learning. And then dividing the training data into a plurality of training data groups and a plurality of verification data groups, so that the data during verification and the data during training are homologous, and the reliability of the trained model can be ensured.
Further, the first position is a finger, a palm center or a palm back; the second position is a shoulder. Thereby being beneficial to the user to carry out the removal test electricity. Further, the second position may also be an abdominal position or the like.
Further, the intelligent test pencil is used for detecting alternating voltage, and the voltage threshold value is equal to 24 volts. To ensure that the present application is applied to a low voltage environment, it is more preferable that the voltage threshold is equal to 12 volts, 6 volts, 3 volts, or even less than 1 volt.
Further, the safety resistor in the second contact electricity-measuring module is preferably a low-resistance resistor.
Furthermore, the physiological characteristic data of the user, which is pre-stored by the control chip, is updated and recorded according to a preset time period; when the user uses the intelligent test pencil, the first position and the second position cannot move. This is because the physiological data of the person changes, and therefore the validity of the test result can be ensured by updating the physiological characteristic data of the user on an on-time basis. In addition, the preset time period is, for example, 1 hour to 1 day.
Further, the intelligent test pencil of the application further comprises a third lead, … and an nth lead so as to respectively construct a plurality of different paths, and therefore the test accuracy is improved.
Referring to fig. 2, in an embodiment, the present application provides a method for using an intelligent test pencil, where the intelligent test pencil is the intelligent test pencil described above, and the method includes:
s1, the control chip judges whether the physiological characteristic data is updated in a preset time window;
s2, if the physiological characteristic data are updated in the preset time window, the user attaches the first lead to the skin at the first position and attaches the second lead to the skin at the second position;
s3, inputting the first position and the second position into the control chip by a user, and enabling the intelligent test pencil to approach the position to be tested in a non-contact mode;
s4, the control chip performs first electricity testing processing through the first contactless electricity testing module to obtain a first voltage value;
s5, the control chip judges whether the first voltage value is smaller than a preset voltage threshold value and judges whether the first voltage value is 0;
s6, if the first voltage value is smaller than a preset voltage threshold value and the first voltage value is not 0, enabling a user to enable the test pencil point to contact the position to be tested;
s6, the control chip controls the first lead wire to be conducted with the second contact type electricity testing module through the change-over switch, and second electricity testing processing is carried out through the second contact type electricity testing module to obtain a second voltage value;
s7, the control chip controls the second lead wire to be conducted with the second contact type electricity testing module through the change-over switch, and third electricity testing processing is carried out through the second contact type electricity testing module to obtain a third voltage value;
s8, the control chip inputs the second voltage value, the third voltage value, the physiological characteristic data, the first position and the second position into a preset voltage estimation model for processing to obtain an estimated voltage value output by the voltage estimation model; the voltage estimation model is trained in a supervised learning mode based on a neural network model.
The application method of the present application is a process executed by the user and the control chip together, for example, after step S1, the control chip may generate an operation prompt (the intelligent test pencil may be a test pencil with a display screen, the operation prompt is displayed on the display screen, or the operation prompt is sent by a sound generator, or the prompt is sent by an LED lamp), or of course, the operation prompt may not be generated, but only a timing operation is needed; similarly, corresponding operations are also carried out in other steps.
Further, before the step S8 of inputting the second voltage value, the third voltage value, the physiological characteristic data, the first position, and the second position into a preset voltage estimation model for processing to obtain an estimated voltage value output by the voltage estimation model, the method includes:
s71, collecting and processing physiological data of the sample crowd during electricity measurement by using the intelligent test pencil to obtain a sample physiological data set of the sample crowd;
s72, obtaining a second sample voltage set, a third sample voltage value set, a first sample position set and a second sample position set which are obtained in the process that the intelligent test pencil is used by a sample population for testing electricity; the electricity testing process of the sample population comprises a first sample electricity testing and a second sample electricity testing by adopting a second contact type electricity testing module, wherein a second voltage set of the sample is a set of voltage values obtained by the first sample electricity testing; the third voltage set of the sample is a set of voltage values obtained by testing the electricity of the second sample; the first sample position set is a set of positions where the first lead electrically connects the skin when the sample is tested for the first time; the second sample position set is a set of positions where the second lead electrically connects the skin when the sample is tested for the second time;
s73, acquiring the real voltage value of the measured position of the sample population when the intelligent test pencil is used for carrying out the electricity measurement process;
s74, constructing a plurality of sample data groups consisting of the sample physiological data set, the sample second voltage set, the sample third voltage value set, the sample first position set, the sample second position set and the real voltage value according to the mutual corresponding relation;
s75, dividing the sample data groups into a plurality of training data groups and a plurality of verification data groups according to a specified proportion;
inputting the training data sets into a preset neural network model for training to obtain a preliminary voltage estimation model;
s76, adopting the plurality of verification data sets to form the preliminary voltage estimation model so as to obtain a verification result, and judging whether the verification result is passed;
and S77, if the verification result is that the verification is passed, taking the preliminary voltage estimation model as a final voltage estimation model.
Therefore, the reliability of the voltage estimation model is ensured. The real voltage value of the measured position can be obtained by adopting a more accurate voltage testing tool for detection.
The intelligent test pencil method based on the three-channel improves the reliability and accuracy of low-voltage detection by adopting the test pencil.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, apparatus, article, or method that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, apparatus, article, or method. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, apparatus, article, or method that includes the element.
The above description is only a preferred embodiment of the present application, and not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings of the present application, or which are directly or indirectly applied to other related technical fields, are also included in the scope of the present application.
Claims (7)
1. The utility model provides an intelligence test pencil based on three-way which characterized in that includes: the power supply device comprises a first non-contact type electricity testing module, a second contact type electricity testing module, a control chip, a change-over switch, an electricity testing pen point, a first lead and a second lead;
the first contactless electricity testing module comprises an induction antenna, a signal amplifying circuit and a battery, wherein the induction antenna is used for inducing induction voltage relative to a position to be tested under the contactless condition, the amplifying circuit is used for amplifying the induction voltage, and the battery is used for supplying power to the signal amplifying circuit;
the second contact type electricity testing module is used for detecting the voltage of the position to be tested; the second contact type electricity testing module is electrically connected with the electricity testing pen point;
the test pencil head is made of a conductive material and is used for electrically connecting a position to be tested;
one end of the first lead is electrically connected with the second contact type electricity testing module, and the other end of the first lead is electrically connected with a first position of the skin of a user in a fitting mode;
one end of the second lead is electrically connected with the second contact type electricity testing module, and the other end of the second lead is electrically connected with a second position of the skin of the user in a fitting mode; wherein the second location is different from the first location;
the control chip is in signal connection with the first contactless electricity testing module; the control chip is in signal connection with the second contact type electricity testing module; the control chip is in signal connection with the change-over switch;
the change-over switch is used for controlling the circuit between the first lead and the second contact type electricity testing module to be opened and closed, and the change-over switch is used for controlling the circuit between the second lead and the second contact type electricity testing module to be opened and closed;
the control chip stores physiological characteristic data of a user, the first position and the second position in advance;
the control chip is configured to:
performing first electricity testing treatment on the position to be tested by adopting the first non-contact electricity testing module to obtain a first voltage value;
judging whether the first voltage value is smaller than a preset voltage threshold value or not, and judging whether the first voltage value is 0 or not;
if the first voltage value is smaller than a preset voltage threshold value and not 0, after the test pencil point contacts the position to be measured, controlling the first lead wire to be conducted with the second contact type test module through the change-over switch, and performing second electricity measurement processing by using the second contact type test module to obtain a second voltage value;
the second lead is controlled to be conducted with the second contact type electricity testing module through the change-over switch, and third electricity testing processing is carried out through the second contact type electricity testing module to obtain a third voltage value;
inputting the second voltage value, the third voltage value, the physiological characteristic data, the first position and the second position into a preset voltage estimation model for processing to obtain an estimated voltage value output by the voltage estimation model, and taking the estimated voltage value as an actual voltage value of a position to be measured; the voltage estimation model is trained in a supervised learning mode based on a neural network model.
2. The three-channel-based intelligent test pencil of claim 1, wherein the training process of the voltage estimation model comprises:
the physiological data acquisition processing is carried out on the sample crowd during the electricity testing process by using the intelligent test pencil to obtain a sample physiological data set of the sample crowd;
obtaining a second sample voltage set, a third sample voltage value set, a first sample position set and a second sample position set which are obtained in the process that the intelligent test pencil is used by a sample population for testing electricity; the electricity testing process of the sample population comprises a first sample electricity testing and a second sample electricity testing by adopting a second contact type electricity testing module, wherein a second voltage set of the sample is a set of voltage values obtained by the first sample electricity testing; the third voltage set of the sample is a set of voltage values obtained by testing the electricity of the second sample; the first sample position set is a set of positions where the first lead electrically connects the skin when the sample is tested for the first time; the second sample position set is a set of positions where the second lead electrically connects the skin when the sample is tested for the second time;
acquiring the real voltage value of the measured position of the sample population when the intelligent test pencil is used for measuring electricity;
constructing a plurality of sample data groups consisting of the sample physiological data set, the sample second voltage set, the sample third voltage value set, the sample first position set, the sample second position set and the real voltage value according to the mutual corresponding relation;
dividing the plurality of sample data groups into a plurality of training data groups and a plurality of verification data groups according to a specified proportion;
inputting the training data sets into a preset neural network model for training to obtain a preliminary voltage estimation model;
adopting the plurality of verification data groups to the preliminary voltage estimation model to obtain a verification result, and judging whether the verification result is passed;
and if the verification result is that the verification is passed, taking the preliminary voltage estimation model as a final voltage estimation model.
3. The three-channel-based intelligent test pencil of claim 1, wherein the first position is a finger, a palm center of palm or a palm back of palm; the second position is a shoulder.
4. The three-way based smart test pencil of claim 1 wherein the smart test pencil is used for detection of ac voltage and the voltage threshold is equal to 24 volts.
5. The three-channel-based intelligent test pencil according to claim 1, wherein the physiological characteristic data of the user, which is pre-stored by the control chip, is updated and recorded according to a preset time period; when the user uses the intelligent test pencil, the first position and the second position cannot move.
6. A use method of an intelligent test pencil, wherein the intelligent test pencil is the intelligent test pencil of any one of claims 1-5, and the use method comprises the following steps:
s1, the control chip judges whether the physiological characteristic data is updated in a preset time period;
s2, if the physiological characteristic data are updated in the preset time period, the user attaches the first lead to the skin at the first position and attaches the second lead to the skin at the second position;
s3, inputting the first position and the second position into the control chip by a user, and enabling the intelligent test pencil to approach the position to be tested in a non-contact mode;
s4, the control chip performs first electricity testing processing through the first contactless electricity testing module to obtain a first voltage value;
s5, the control chip judges whether the first voltage value is smaller than a preset voltage threshold value and judges whether the first voltage value is 0;
s6, if the first voltage value is smaller than a preset voltage threshold value and the first voltage value is not 0, enabling a user to enable the test pencil point to contact the position to be tested;
s7, the control chip controls the first lead wire to be conducted with the second contact type electricity testing module through the change-over switch, and second electricity testing processing is carried out through the second contact type electricity testing module to obtain a second voltage value;
s8, the control chip controls the second lead wire to be conducted with the second contact type electricity testing module through the change-over switch, and third electricity testing processing is carried out through the second contact type electricity testing module to obtain a third voltage value;
s9, the control chip inputs the second voltage value, the third voltage value, the physiological characteristic data, the first position and the second position into a preset voltage estimation model for processing to obtain an estimated voltage value output by the voltage estimation model; the voltage estimation model is trained in a supervised learning mode based on a neural network model.
7. The method as claimed in claim 6, wherein the step S9 of the control chip inputting the second voltage value, the third voltage value, the physiological characteristic data, the first position and the second position into a preset voltage estimation model for processing to obtain an estimated voltage value output by the voltage estimation model includes:
s81, collecting and processing physiological data of the sample crowd during electricity measurement by using the intelligent test pencil to obtain a sample physiological data set of the sample crowd;
s82, obtaining a second sample voltage set, a third sample voltage value set, a first sample position set and a second sample position set which are obtained in the process that the intelligent test pencil is used by a sample population for testing electricity; the electricity testing process of the sample population comprises a first sample electricity testing and a second sample electricity testing by adopting a second contact type electricity testing module, wherein a second voltage set of the sample is a set of voltage values obtained by the first sample electricity testing; the third voltage set of the sample is a set of voltage values obtained by testing the electricity of the second sample; the first sample position set is a set of positions where the first lead electrically connects the skin when the sample is tested for the first time; the second sample position set is a set of positions where the second lead electrically connects the skin when the sample is tested for the second time;
s83, acquiring the real voltage value of the measured position of the sample population when the intelligent test pencil is used for carrying out the electricity measurement process;
s84, constructing a plurality of sample data groups consisting of the sample physiological data set, the sample second voltage set, the sample third voltage value set, the sample first position set, the sample second position set and the real voltage value according to the mutual corresponding relation;
s85, dividing the sample data groups into a plurality of training data groups and a plurality of verification data groups according to a specified proportion;
s86, inputting the training data sets into a preset neural network model for training to obtain a preliminary voltage estimation model;
s87, adopting the plurality of verification data sets to form the preliminary voltage estimation model so as to obtain a verification result, and judging whether the verification result is passed;
and S88, if the verification result is that the verification is passed, taking the preliminary voltage estimation model as a final voltage estimation model.
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| DE29808028U1 (en) * | 1998-05-05 | 1998-07-23 | Geyer Reinhard Dr | Single-pole electrical voltage tester |
| CN1837832A (en) * | 2006-04-20 | 2006-09-27 | 赵文明 | Microcomputer integrated electroprobe |
| CN101697870B (en) * | 2009-11-06 | 2011-04-27 | 中国科学院合肥物质科学研究院 | Multi-parameter human body function detecting device and detecting method thereof |
| CN101852823B (en) * | 2010-02-08 | 2012-04-18 | 广东电网公司电力科学研究院 | Non-contact type voltage measuring device and non-contact type voltage measuring method |
| CN101972549A (en) * | 2010-11-10 | 2011-02-16 | 刘喆 | High-sensitivity induction type electricity measurer with strong and weak gears |
| CA2917798A1 (en) * | 2013-07-11 | 2015-01-15 | Cintas Corporation | Contact voltage detection system and method |
| US9569055B2 (en) * | 2013-08-13 | 2017-02-14 | Samsung Electronics Company, Ltd. | Interaction sensing |
| CN105021874A (en) * | 2015-07-28 | 2015-11-04 | 苏州南光电子科技有限公司 | Electronic test pencil based on induction detection circuit |
| CN205609076U (en) * | 2016-02-18 | 2016-09-28 | 高泽林 | Simple and easy electric installation that shows faint electric current |
| CN106483365A (en) * | 2016-10-18 | 2017-03-08 | 谢晓帆 | Voltage test pencil |
| CN108828270A (en) * | 2018-03-23 | 2018-11-16 | 深圳市安思科电子科技有限公司 | A kind of portable type intelligent electric instrument that detection accuracy is high |
| CN208921777U (en) * | 2018-09-28 | 2019-05-31 | 广东电网有限责任公司 | Voltage measurement pen |
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