MXPA99004910A - Device and method using dielectrokinesis to locate entities - Google Patents

Abstract

The dielectrophoretic force caused by the non-uniform electric field squared spatial gradient three-dimensional pattern uniquely exhibited by a predetermined type of entity can be detected by locator device. A human operator holds the device in hand to thereby electrically connect to the human operator. The human operator's naturally occuring very low electrical decay time constant is increased through electronic circuitry externally connected to the device. The device is held in a balanced horizontal state, and the operator scans the device in a constant uniform motion back and forth. An antenna extends from the front of the device, and both are acted on by the dielectrophoretic force. This force results in a subsequent resulting torque, acceleration, vibration or any other measurable quantifiable manifestation of the force about the handle's pivot line hence driving the device and its antenna toward the direction and position of any entities of the predetermined type that are within range.

Description

DEVICE AND METHOD QÜE USA THE DIE ECT OCINESIS TO LOCATE ENTITIES.

FIELD OF THE INVENTION The present invention relates to methods and apparatus for locating various entities, including humans and animals, by observing and detecting a force and the resultant, subsequent, torque, acceleration, vibration, or other quantifiable, measurable manifestation of force created by the spatial gradient pattern of the non-uniform three-dimensional electric field, exhibited unequally by the entity and which is detected by the device of the present invention when used by the human operator of the device.

BACKGROUND OF THE INVENTION The detection of visually hidden entities, specifically human beings, has many uses in the following areas: firefighting and rescuing search operations; operatives to exercise the law; military operations; etc. Although prior art devices are known to detect humans, animals and other materials, some through the measurement of changes in an electrostatic field, none of the operable devices of the prior art uses the resultant force of the three-dimensional gradient pattern spatial of the square of the non-uniform electric field, unequally exhibited by an entity, to indicate the precise location and direction of the entity in question, in relation to the operator of the device. By using an electrokinetic effect, dielectrophoresis, which induces a resultant force and twisting moment in an antenna and other component parts of the device, the present invention provides a quick indication of the directional location of the entity in question. A meter may also be provided to indicate the direction of the strongest signal strength of the spatial gradient of the square of the non-uniform electric field, for those situations where the dielectrophoretic force and the resultant torque, subsequent acceleration, vibration or any other quantifiable, measurable manifestation of force, is extremely small and difficult to detect. It should be noted that although the present invention works for many different types of entities, a primary use of the present invention is to locate human beings, regardless of the presence or absence of opaque material structures (walls, trees, mounds of earth, etc.). .), or interference signals rfi (radio frequency interference) and emi (electromagnetic interference), or regardless of the adverse weather conditions, and visibility conditions day or night. U.S. Patent No. 3,771,152 (Dettling et al.) Discloses an intrusion detector wherein changes in an electrostatic field caused by an intruder generate a detection signal. Directional information is not derived. U.S. Patent No. 4,316,180 (Le Vert) describes a directional detector that locates an intruder (human) through the measurement of changes in a local electrostatic field. Two coils are used to differentiate the front and back sides of the device. No real and specific directional indication is provided. U.S. Patent No. 5,3436,613 (Ghosh et al.) Measures a dissipation of an electric field to determine that some biological tissue, which opposes conductive or insulating materials, has penetrated the field. Japanese Patent No. 113692 describes a device for the detection of persons, which measures the difference in electrostatic capacity. It is noted that none of the above inventions and patents, taken individually or in combination, describe the present invention as claimed.

SUMMARY OF THE INVENTION The present invention detects the presence of several entities, using an electrokinetic effect known as dielectrophoresis. As discussed above, a primary use of the present invention is to detect and locate human beings that can not be observed. The electrokinetic effect used by the present invention, dielectrophoresis, is one of five known electrokinetic effects (the other four are electrophoresis, electro-osmosis, Dorn effect, and circulation potential), and describes the forces that affect the mechanical behavior of initially neutral matter that is dielectrically polarized by induction through spatially non-uniform electric fields. The spatial non-uniformity of an electric field can be measured by the spatial gradient of the electric field. The strength of dielectrophoresis depends non-linearly on several factors that include the dielectric polarizability of the surrounding medium (air plus walls, trees, etc., that intervene), the dielectric polarizability and the geometry of the initially neutral matter (antenna of the device and other component parts of the device), and the spatial gradient of the square of the distribution of the local electric field of the human target, as detected in the antenna of the device and in other component parts. The spatial gradient is measured by the force of dielectrophoresis produced by the induced polarization charge, in the antenna of the device and in other component parts, and this force is a constant direction search force that directs (or tries to direct) the antenna of the device and other component parts, towards the maximum value in the spatial gradient pattern of the square of the non-uniform three-dimensional electric field, exhibited by a predetermined entity type. This constant direction search force varies greatly in magnitude, as a function of the angular position and the radial position of the entity to be located (such as a human target) with respect to the antenna of the device and other component parts of the device, and depending on the effective dielectric polarities of the intervening medium (such as air) and other materials used in the antenna and other component parts of the device. The following equations define the forces of dielectrophoresis, where equation 1 shows the force for initially neutral spherical objects (spherical antenna and the other component parts of the device), and equation 2 shows the force for initially neutral cylindrical objects (cylindrical antenna and the other component parts of the device).

F = 3/2 (4/3 (tra3)) e0K1 (K2 - K,) / ^ + 2K,) V | E0 |; Equation 1 F = (7ra ') (Depil, - + K,) V | E " Equation 2 Where: F is the vector of the dielectric strength detected by the antenna and by the other component parts of the device; a is the radius of the sphere or cylinder; L is the length of the cylinder; e0 is the permitivity constant of the free space; K2 is the dielectric constant of the material in the sphere or cylinder; K, is the dielectric constant of the fluid or gas, (air) that surrounds both the entity and the antenna and the other component parts of the device; EQ is the electric field produced by the entity as detected by the antenna and by the other component parts of the device; and V Is the mathematical operator of the spatial gradient.

It should be noted that the term "antenna" as used in this context includes (in a very real sense) all the components present in the device of the present invention. Up to this point, the dielectric constant of the materials that make up the locator of the present invention all determine the overall value of K2 in the above equations. These materials are not arranged in a uniform spherical or cylindrical shape and therefore the exact value of K2 is difficult to determine. In a practical sense, experimentation has demonstrated (and continues to be demonstrated) the types and placement of the dielectric materials necessary to produce a maximum dielectrophoretic force and the resultant torque, subsequent acceleration, vibration, or any other quantifiable manifestations. , measurable, force, to precisely locate different types of entities. The following table lists some of the dielectric materials used in the locator (K2 values) and / or surrounding materials (such as air, water, walls, etc.), the locator (K values), and the dielectric constant for these materials.

CONSTANT DIELECTRIC MATERIAL air 1.0 Polyvinyl Chloride 3.0 (PVC) nylon 4.0 .5 polyester silicon 12.0 2-propanol 19.9 water 78.4 n-methanoarsonic acid 191.3 (n-maa) selenium 1,000 BaTi03 4,000 (CS2 > n 20,000 metal oo The above discussion and the equations concerning dielectrophoresis provide a rational explanation of the principles of operation of the present invention that is consistent with all the empirical observations associated with the present invention. These operating principles involve using the above mentioned forces to direct an antenna towards the maximum gradient of the local electric field, thereby indicating the direction towards an unobserved entity. In accordance with the invention, an operator holds the locating device in the hand, and, through a handle, the locating device is electrically connected to the operator. The operator is partially electrically grounded (through his feet), and therefore the capacitance (C) and resistance (R) of the individual human operator's body, to true ground, are electrically connected to the handle of the locating device . The intervals for C values of the individual human body have been measured as from 100 pF to 400 pF and for R values of the individual human body, intervals of 0.03 KO to 1 MO have been measured. In this way, the generalized electrical parameter (the polarization charge pattern induced in the device by the spatial gradient of the electric field of the entity in this case, but also the electric field, the current and the voltage) the exponential decay time (= R) varies constantly for the variety of bodies of human beings potentially acting as operators of the locating device, is approximately 3 to 400 μ seconds.

This decay time constant increases greatly through an externally connected series resistor, up to 100 KO, and a parallel capacitor up to 0.01 mF, which results in an effective constant of the human operator's exponential decay time of up to 1 to 10 seconds. This allows the dielectrophoretic forces caused by the pattern of induced polarization charges (term, not free), in the antenna of the locating device and in other component parts, to be detected, supplied instantaneously and fixed, since the force is supplied faster of which the polarization charge pattern induced on the device can decline away and towards true ground through the operator's body. This effect is called and uses the spatially self-corrective nature of the dielectrophoretic force (always indicating or trying to indicate the maximum value of a spatial gradient pattern of the square of the three-dimensional electric field of the entity). The locating device is maintained in a horizontal, balanced state, and the operator scans with the locating device with a uniform, constant movement, backwards and forwards. An antenna extends from the front of the locating device and is operated by the forces mentioned above. These forces create a subsequent, resulting torque, around a well-defined line of rotation that extends to cause the antenna of the locating device and the other component parts of the device to point toward the maximum spatial gradient of the square of the non-uniform electric field , exhibited unevenly by any "target" human being or other predetermined entity type, which is within the range of the locating device. The effect creates a self-correcting action to the locating device when the human operator explores with the device with a uniform movement to "immobilize in" a target entity, initially. The effect also creates an additional self-corrective action of the locating device to closely follow the radial and angular movements of an entity (to track and reacquire a target entity once the operator has initially been immobilized on a target entity). The self-correcting action of the locating device to reacquire a target or target occurs without any additional open action by the human operator, and therefore the device is functioning independently of the human operator. Four internal TEC (field effect transistors) J of channel N are connected to the antenna of the locating device and operate in their non-linear range to effectively change the length of the antenna. Three of these TECs are arranged in modules that are equidistant from the longitudinal axis of the antenna and are spaced 120 degrees apart from each other. The fourth TEC is placed in a module below the axis and towards the back of the locating device. Three potentiometers are provided in the first three modules, to adjust the current levels through the first three TEC and to tune the locator to indicate directly a body of a human being located in a precise, known position, as a target entity reference. The gain and frequency response of the fourth TEC, by virtue of the voltage pattern induced by the reference entity, is adjusted by a sixth position switch connected to the base of an NPN transistor. By changing the frequency response of the locating device, the device is tuned to reject electromagnetic signals and higher frequency noise from all external sources, including those sources associated with the human operator itself, so that the locating device interacts with, and responds to, a, only the spatial gradient pattern of the square of the non-uniform three-dimensional electric field, unequally exhibited by a predetermined entity type. While scanning with the locator device in a uniform motion, constant, backwards and forwards, in front of a known entity (such as a human, if the target is a human being), the operator changes the sixth position switch until a maximum force is detected and the resulting torque , subsequent, and used to "point" the antenna and the other component parts of the device, to the target entity. After selecting the setting of the sixth position switch, the operator adjusts the gain of the first three TECs until the locating device indicates or attempts to directly indicate the target entity. For different entities, different dielectric materials are used in the antenna of the locating device and in its other component parts. Examples of detectable entities include humans, animals, metals, plastics and other materials. Continuous research of the instrument has produced positive results regarding the instrument's ability to be custom-made, both as a geometric design and as regards its construction materials to specifically detect a variety of different target entities. Accordingly, it is an object of the invention to provide an accurate method for locating the position and direction of the body of a human being, in relation to the human operator of the instrument.

Another object of the invention is to provide an accurate method for locating the direction and position of a predetermined type of animal, relative to the human operator of the instrument. A further object of the invention is to provide an accurate method for locating the direction and position of a predetermined type of material, relative to the human operator of the instrument. An object of the invention is to provide improved elements and arrangements, thereof, in an apparatus for the purposes described, that is not expensive, that is safe and fully effective to realize the purposes for which it was created. These and other objects of the present invention will be readily apparent upon further review of the following specification and drawings.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is an environmental view of the locator device used by a first person to locate a second hidden person, in accordance with the present invention; Figure 2 is a perspective view of the locating device, in accordance with the present invention; Figure 3 is a side view of the right side of the locator device shown in Figure 2; Figure 4 is a front view of the locator device shown in Figure 2; Fig. 5 is a schematic diagram of the three main modules and the tuning module of the lower part of the locating device of Fig. 2; Figure 6 is a cross-sectional view along the length and through the center of the locator device of Figure 2; and Figure 7 is a schematic drawing of an entity, a base plane, the device of the present invention and the electric field polarization lines of the entity.

DETAILED DESCRIPTION OF THE PREFERRED MODALITIES The device according to the present invention is shown as locator device 100 in Figure 1. A human operator A is shown using the locator device to detect the presence of a second human B who is visually hidden behind a C wall. The handle 101 of the locator 100 is in electrical contact with the hand of the operator, and the antenna 102 and the other component parts of the locating device are actuated by the forces mentioned above. By holding locator 100 in a horizontal level position and scanning with locator device 100 with a uniform and constant movement, backward and forward, operator A detects a constant, self-correcting search force, and the resulting torque , subsequent, in the antenna 102 and in the other component parts of the locating device causes the locating device to point towards the direction and location of the second human B visually hidden. The details of the exterior of the locator 100 can be seen in Figures 2-4. The antenna 102 includes a back portion 209 made of nylon or a similar material, the sections 210 having telescopic movement, and an end head 211. The antenna 102 protrudes from a central dielectric housing 200, in a coaxial arrangement. It is important to note that the antenna 102 does not necessarily have to be of the telescopic type, and may be an antenna of the flexible or rigid type of a piece. Furthermore, since all the components of the locator device 100 effectively act as an antenna, the locator device functions as described without the antenna 102 installed, although the forces produced are greatly reduced.

Attached to the central dielectric housing 200 are three modules 201, 202, 203. The upper module 201 is mounted directly above the common axis of the antenna 102 and the central dielectric housing 200 and aligned with this axis. The lower right module 202 and the lower left module 203 are located 120 ° apart from one another and from the upper module 201 and are also aligned with the axis. Each module 201, 202 and 203 have a control knob, variable resistor 204, 205, and 206, respectively. The lower right module 202 and the left lower module 203 include the parabolic antennas 207 and 208, respectively, and both parabolic antennas are attached to their respective module in a backward inclined position. The handle 101 is formed of a metal rod projecting coaxially from the central dielectric housing 200. The handle 101 is bent upward, extends horizontally for a short distance, bends down to form a handle, and then bends forward to provide a support for a tuning module 212 located at the bottom. The tuning module 212 located at the bottom includes a variable resistor control knob 213 and a cable 214 which is attached to the upper module 201. The electronic circuitry for the locator device 100 is shown in Figure 5. The antenna 102 is connected to an optimum low pass filter Fl, which removes all signals and low frequency noise, from all external electromagnetic sources, including those that come from the human operator A itself. The details of the electronic circuitry and the geometric design and construction materials used in the locator device 100 are selected in order to adapt the locator device 100 to a predetermined entity type. The output of the low pass filter Fl is fed to the gate of the three channel effect transistors of channel N, TEC. The three TECs act as amplifiers and are housed one in each of the three modules. The lower right module 202 contains the TEC J1 and a variable resistor R1 from 0 to 100 KO, the upper module 201 contains the TEC J2, a direct current Ml ammeter (CD), a variable resistor R3 from 0 to 100 KO, and a piezo buzzer Pl, and the lower left module 203 contains TEC J3, a variable resistor R2 from 0 to 100 KO, and an on / off switch Sl and a 9 volt battery Bl. The variable resistors Rl and R2 adjust the current gain of the TEC Jl and J3, respectively. Adjusting the gain of these TEC, balances the effective electrostatic effect in these devices, in relation to TEC J2. The overall gain of the TEC Jl, J2 and J3, is adjusted by the variable resistor R3 from 0 to 100 KO. The CD ammeter Ml is provided to indicate the combined current flow through the three TEC. In addition, the piezo buzzer Pl provides an audio output whose frequency increases as the current through the circuit increases. The battery Bl provides the required supply voltage (preferably nine volts) to operate the circuit, and the switch Sl provides a means to turn on and off the amplifiers from Jl to J3. Module 212 of the lower part contains the set of circuits necessary to increase the decay time constant (RC) of the electrical parameters of the human operator, from microseconds, as it occurs naturally, to seconds, as previously explained, necessary to calculate and fix the dielectrophoretic force exhibited by a target entity and the resultant torque, subsequent, acceleration, vibration or any other quantifiable, measurable manifestation of the force detected by the locator device 100. A female plug is used Ground connection GPL 0.3175 cm (1/8 in) to provide a ground connection to the circuit, inserting a male short-circuiting plug, coupling, into the GP1 socket. Once inserted, the male coupling plug (through the GP1 socket) provides a ground potential through the reference entity ER to each of the resistors R4, of 3.3 KO, to the resistor R5, of 22 KO, to the R6 resistor of 100 KO, to the capacitor C3 of 0.01 mF, to the trimming diodes D3 and D4, and positions one of the six-position selector switches S2. The six-position selector switch S2 can be moved to one of six positions to connect the base of an NPN transistor, Ql, to one of the above components. The NPN transistor, Ql, is part of a tunable circuit that also includes a TEC J4 of N-channel, a first capacitor Cl of 0.01 μF, a first diode DI, a second diode D2, an electrical line 500, and a second capacitor C2 of 0.01 μF. By inserting or removing the male plug short of the GP1 socket and changing the position of the S2 switch, the gain of the transistor Ql can be adjusted, and the overall response of the frequency of the tuned circuit, in the module 212 of the lower part can be changed for a maximum response. As stated above, all of the components of Figure 5 act as extensions of the antenna that increase the dielectrophoretic force and the resultant, subsequent torque that is detected by the locator device 100. Each human being, as an operator of the device locator, has a different capacitance (C) and resistance (R), which results in a constant lowering of the exponential decay time (= RC) to capture and fix the dielectrophoretic force and the resultant, subsequent torque. By adjusting from R1 to R3 and S2, the individual human operator and the locating device 100 can be tuned and optimized together to detect the maximum dielectrophoretic force and the subsequent resultant torque for the specific human being who operates the locator device 100. This is achieved by using a reference entity (such as a visible human being) and adjusting S2 and R3 until the individual human operator detects the maximum dielectrophoretic force and the resultant, subsequent torque. Once the position of S2 has been determined, the operator observes the direction in which the antenna is attracted in relation to the reference entity. If this direction is not exactly towards the reference, Rl and R2 are adjusted until the torque in the locating device 100 tends to direct the antenna 102 directly towards the reference entity. After the locator device 100 is tuned in and optimized, unobserved entities of the same type as the reference entity can be easily located by the device (eg, humans, different species of animals, different precious and non-precious metals, plastics, and other materials).

The interior of the central dielectric housing 200 is shown in Figure 6. One end 604. of the telescopic antenna 102 extends toward the front end of the housing 200, while one end 603 of the handle 101 extends toward the rear end of the housing 200. A cavity 600 is filled with a first dielectric material 601 that surrounds both the inner end 604 of the telescopic antenna 102 and the inner end 603 of the handle 101. Around this cavity 600 is a second dielectric material 602 that defines the shape of the cavity 600 and also contracts the inner end 604 of the telescopic antenna 102 as well as the inner end 603 of the handle 101 near the point where the end 604 and the end 603 exit the housing 200. The handle 101 of the device with the hand of the operator defines a line E of rotation or pivot around which the dielectrophoretic force produces the resulting torque, subs ecuente, the acceleration, the vibration or any other manifestation of the force, quantifiable, measurable. The ends 604 and 603 are separated by a distance D, and this distance is specific for the human operator and also affects the overall sensitivity and response of the locating device 100 in terms of the maximum, detectable torque and force. Although specific dielectric materials are still being investigated to maximize the effect of torque, in the antenna, for different entities, dielectric materials have been found that produce a useful torque to precisely locate human beings. In particular, handle 101 and antenna 102 are preferably made of metal, material 601 is air, material 602 is PVC (polyvinyl chloride) and back portion 209 of the antenna is nylon. In addition, the circuitry found in the modules 201, 202, 203 and the module 212 of the lower part, is encapsulated in PVC, while the modules themselves, the housing 200, as well as the parabolic antennas 207 and 208, They are also made of PVC. When these materials are used, the antenna 102 and the other component parts of the device detect an effective dielectrophoretic force and the subsequent resultant torque to accurately locate the presence of human beings. The dielectric material 601 can alternatively be selected from the following materials with varying levels of resulting torque: water (distilled, deionized), glycerol, (di) ethylene, triethylene glycol, 2-ethyl-l, 3-hexanediol,? -butyrolactone, dimethylpropionamide, dimethyl sulfoxide, methanol, ethanol, propanol, barium titanate, lead titanate, and lead zirconate titanate.

Figure 7 shows an objective entity, of interest 700, and a surrounding base plane 702. The bias charges 701 of the entity produce non-uniform electric field lines 704 having a unique spatial pattern as shown. The non-uniform electric field lines 704 also have a unique spatial gradient pattern (not shown). The non-uniform electric field lines 704 terminate in the surrounding base plane 702 and induce opposite polarization charges 703 therein. An initially neutral matter or medium 705, such as the device of the present invention, is shown in the middle of the non-uniform electric field lines. The neutral matter 705 includes a cavity 706 filled with a specific dielectric material 707. The non-uniform electric field lines induce biasing charges 709 and 710 in the dielectric material 707. The neutral matter 705 also contains protruding antennas 708 which are formed from a specific dielectric material and are in direct contact with the cavity 706 and the dielectric material 707. The protruding antennas 708 form a pivot line 711 which is perpendicular to the plane containing Figure 7. The dielectrophoretic force manifests itself as an easily detected torque movement of the antenna 708 around the pivot line 711. It should be understood that the present invention is not limited to the embodiments described above but encompasses any and all modes within the scope of the following claims.

Claims (32)

NOVELTY OF THE INVENTION Having described the above invention, it is considered as a novelty, and therefore, the content of the following is claimed as property: CLAIMS

1. A device for locating an entity of a predetermined type, and the device is characterized in that it comprises: a housing having an interior with a first dielectric material therein; and a sinuous rod forming a handle, the rod having a first end extending from the interior of the housing and outside a rear end of the housing, wherein the housing and the handle are constructed such that the device reacts to a The unique three-dimensional pattern of the spatial gradient of the square of the non-uniform electric field exhibited by the entity, to produce a dielectrophoretic force and a quantifiable manifestation of the force in the device, indicating a specific direction in relation to the entity.

2. The device according to claim 1, characterized in that: the housing includes a cavity inside the first dielectric material, and the cavity is filled with a second dielectric material.

3. The device according to claim 2, characterized in that it also comprises at least a first module joined to a first corresponding surface of the housing, the first module houses therein a corresponding third dielectric material.

4. The device according to claim 3, characterized in that the first module has a corresponding first amplifier therein.

5. The device according to claim 3, characterized in that it comprises a first, second and third modules connected to the first, second and third corresponding surfaces of the housing, the modules housing therein, third, fourth and fifth corresponding dielectric materials, respectively .

6. The device according to claim 5, characterized in that the modules are located radially, 120 degrees one from the other.

The device according to claim 5, characterized in that the first, second and third modules comprise therein a first, second and third amplifiers, respectively.

8. The device according to claim 7, characterized in that the first module comprises therein a first variable resistor coupled with the first, second and third amplifiers, and the variable resistor changes a gain of the first, second and third amplifiers.

9. The device according to claim 8, characterized in that the second module comprises a second variable resistor coupled with the second amplifier and the third module comprises a third variable resistor coupled with the third amplifier, the second and third variable resistors change a gain of the second and third amplifiers, respectively.

10. The device according to claim 7, characterized in that the second dielectric material is air.

11. The device according to claim 7, characterized in that it further comprises an elongated antenna having a first end, the first end extending from the interior of the housing and outside a front end of the housing, wherein the first module and the second Each module has a satellite dish mounted on them, in a backward inclined position.

12. The device according to claim 11, characterized in that: the right module of the lower part and the left module of the lower part each have a parabolic antenna mounted on them, in a backward inclined position.

13. The device according to claim 5, characterized in that: the first, second, third, fourth, and fifth dielectric materials are selected to maximize the dielectrophoretic force for the predetermined type of entity.

14. The device according to claim 5, characterized in that: the sinuous rod includes a second end that has, mounted on it, a rear module.

15. The device according to claim 14, characterized in that: the rear module that is on the rod, has in it a sixth dielectric material.

16. The device according to claim 15, characterized in that: the predetermined type of entity is a human; the first, third, fourth, fifth and sixth dielectric materials are PVC (polyvinyl chloride); and the second dielectric material is selected from the group consisting of: air; Water; glycerol; (di) ethylene; triethylene glycol; 2-ethyl-l, 3-hexanediol; ? -butyrolactone; dimethylpropionamide; dimethylsulfoxide; methanol; ethanol; propanol; barium titanate; lead titanate; and lead zirconate titanate.

17. The device according to claim 16, characterized in that: the second dielectric material is air.

18. The device according to claim 15, characterized in that it further comprises: an amplifier placed in the rear module, and the amplifier has an input; a multi-position switch, electrically connected to the input; and a plurality of tuning circuits coupled to the input through the multi-position switch.

19. The device according to claim 18, characterized in that: the first module comprises therein a first variable resistor, corresponding, to change the gain of the first amplifier.

20. The device according to claim 3, characterized in that the predetermined type of entity is a human, because the first and third dielectric materials are PVC (polyvinyl chloride) and the second dielectric material is selected from the group consisting essentially of: air, water, glycerol, (di) ethylene, triethylene glycol, 2-ethyl-l, 3-hexanediol,? -butyrolactone, dimethylpropionamide, dimethylsulfoxide, methanol; ethanol, propanol, barium titanate; lead titanate; and lead zirconate titanate.

21. The device according to claim 2, characterized in that it further comprises: an elongated antenna having a first end; the first end of the elongated antenna extends from the interior of the housing and outward from a front end of the housing.

22. The device according to claim 21, characterized in that: the first and second dielectric materials are both placed in contact with the first end of the elongated antenna and with the first end of the sinuous rod. r

23. A method for locating an entity of a predetermined type, and the method is characterized in that it comprises: providing a locating device having a housing and a handle; hold the locator device by the handle; explore with the locating device with a uniform, constant movement, backwards and forwards, in a general direction towards the entity; and observe a reaction of the device, caused by a quantifiable manifestation of a dielectrophoretic force produced by an interaction between the device and a unique three-dimensional pattern of the spatial gradient of the square of the non-uniform electric field, exhibited by the entity, to determine a specific direction with relationship to the entity.

24. The method according to claim 23, and the method is characterized in that it further comprises: providing the locating device with at least one dielectric material; and wherein the at least one dielectric material is preselected depending on the predetermined type of entity.

25. The method according to claim 24, and the method is characterized in that it further comprises: providing the locating device with at least two dielectric materials; a first material of the dielectric materials is PVC; a second material of the dielectric materials is selected from the group consisting of: air; water, glycerol; (di) ethylene; triethylene glycol; 2-ethyl-l, 3-hexanediol; ? -butyrolactone; dimethylpropionamide; dimethylsulfoxide; methanol; ethanol; propanol; barium titanate; lead titanate; and lead zirconate titanate.

26. The method in accordance with the claim 25, characterized in that: the second dielectric material is air; and the default type of entity is a human being.

27. The method according to claim 23, characterized in that it further comprises: providing the locating device with an elongated antenna; and because the quantifiable manifestation is a moment of torsion; and the reaction is a tendency of the antenna to point towards the entity.

28. A device for detecting a unique three-dimensional pattern of a spatial gradient of the square of the non-uniform electric field, the device is characterized in that it comprises: a housing defining therein a cavity; a first dielectric material placed in the housing; and a handle formed of a conductive material placed in contact with the first dielectric material, wherein the housing and the handle are constructed in such a way that the device reacts to the unique three-dimensional pattern of the spatial gradient of the square of the non-uniform electric field, to produce a dielectrophoretic force and a quantifiable manifestation, of that force, in the device.

29. The device according to claim 28, characterized in that it further comprises an antenna placed in operative communication with the housing.

30. The device according to claim 29, characterized in that the antenna is defined by the components of the device.

31. The device according to claim 29, characterized in that the antenna is formed of a conductive material and is placed in contact with the first dielectric material.

32. The device according to claim 31, characterized in that the housing comprises a front end and a rear end, and the antenna is secured to the housing at the front end and the handle is secured to the housing at the rear end.