CN108111179B - Signal generator with adjustable phase - Google Patents

Abstract

The invention discloses a signal generator with adjustable phase. The phase adjusting device is coupled to the signal generating board, and the phase adjusting device includes a housing and a phase adjusting component arranged in the housing, the housing is in the shape of a hollow cylinder with closed ends, and the phase adjusting component includes a main shaft coil and a phase adjusting component. phase coil. The signal generator with adjustable phase of the present invention can effectively utilize the mutual inductance of the main shaft coil and the phase adjustment coil to realize phase adjustment through the arrangement of the casing, the main shaft coil and the phase adjustment coil. The technology adopts the method of software adjustment, and the overall structure is simple and easy to realize.

Description

Signal generator with adjustable phase

technical field

The present invention relates to a signal generator, more particularly to a signal generator with adjustable phase.

Background technique

With the rapid development of radio communication technology, the existing communication spectrum has gradually become insufficient. Therefore, the communication method of cognitive radio is adopted in the prior art to make full use of the temporarily unused idle spectrum for communication to solve the problem. The problem of insufficient spectrum resources in the process of wireless communication.

In the process of wireless communication, the signal generator and the receiver are very important. The quality of the communication between the signal generator and the receiver will directly affect the communication quality of the entire radio. The matching degree of the transmission signal phase directly affects the transmission quality of the signal, and the signal phase of the existing signal generator is fixed, so when the phase of the signal generator and the receiver are not equal, it will cause the signal There will be mutual cancellation between them, which will lead to the problem of poor communication quality, and the existing phase adjustment equipment adopts the method of circuit or software adjustment, so its operation process is very complicated and cannot be used by existing ordinary users. Phase adjustment operation during the process.

SUMMARY OF THE INVENTION

In view of the deficiencies in the prior art, the purpose of the present invention is to provide a signal generator that can effectively adjust the phase.

In order to achieve the above purpose, the present invention provides the following technical solutions: a signal generator with adjustable phase, comprising a casing, a circuit board arranged in the casing, and an antenna arranged on the casing, the circuit board and the antenna Connected by wires, the circuit board includes a signal generating board and a phase adjusting device, the phase adjusting device is coupled with the signal generating board, and is used for receiving the signal output by the signal generating board, and adjusting the phase of the signal and outputting the signal, the The phase adjusting device includes a casing and a phase adjusting assembly arranged in the casing, the casing is in the shape of a hollow cylinder with closed ends, the phase adjusting assembly includes a main shaft coil and a phase adjusting coil, and the main shaft coil is coaxially fixed on the casing Inside, one end of the main shaft coil is coaxially and rotatably provided with a phase modulation disk, the phase modulation disk is arranged on the inner wall of the end of the casing, and one end of the phase modulation coil is eccentrically fixed on the end of the phase modulation disk facing away from the outer casing. One end of the inner wall and the other end are coupled to the antenna for outputting the phase-modulated signal to the antenna. One end of the casing opposite to the phase-modulating disk is provided with a rotating component for driving the phase-modulating disk to rotate.

As a further improvement of the present invention, the rotating assembly includes a connecting bracket and a rotatable rotating handle disposed on the connecting bracket, and a rotating hole is opened on the end face of one end of the housing opposite to the phase adjusting plate, and the phase adjusting plate It is rotatably arranged in the rotation hole, the connecting bracket is fixedly connected with the end face of the shell, one end of the rotating handle is coaxially and fixedly connected with the phase modulation plate, and the other end is rotatably connected with the connecting bracket.

As a further improvement of the present invention, a pointer is fixedly connected to the end of the rotating handle facing away from the phase modulation disk, and an angle scale for the pointer to indicate is provided on the connecting bracket near the pointer.

As a further improvement of the present invention, a rotating groove is formed on the hole wall of the rotating hole, the side of the phase modulation plate is rotatably embedded in the rotating groove, and the connecting bracket includes a connecting plate and several connecting rods, One end of several of the connecting rods is fixedly connected with the side of the connecting plate and distributed in a circle, and the other end is fixedly connected with the shell. The pointer and the angle scale are all arranged on the end of the connecting plate facing away from the phase adjusting plate.

As a further improvement of the present invention, the antenna includes a high-gain antenna body, a low-gain antenna body, and a conversion device. Both the high-gain antenna body and the low-gain antenna body are coupled to the circuit board through the conversion device, and are controlled and connected by the conversion device. The circuit board is turned on or off, the conversion device has a control terminal, the control terminal is coupled with the circuit board, the circuit board judges the communication distance, and outputs a long-distance communication signal or a short-distance communication signal. When the control terminal receives When the long-distance communication signal is output from the circuit board, the conversion device connects the high-gain antenna body and the circuit board.

As a further improvement of the present invention, the conversion device includes a conversion base and a conductive conversion assembly, the conductive conversion assembly is arranged in the conversion base, and a first installation groove and a second installation groove are opened on the upper side of the conversion base, and the The conductive conversion assembly includes two conductive bases respectively arranged at the bottom of the first installation groove and the second installation groove in a one-to-one correspondence, both of the conductive bases are coupled with the circuit board, the high-gain antenna body and the low-gain antenna body The lower ends of the antenna body are all attached with conductive sheets, and the lower ends of the high-gain antenna body and the low-gain antenna body are respectively arranged in the first installation slot and the second installation slot in a one-to-one correspondence. Inside the two installation slots is a driving component for driving the conductive sheet and the conductive base to contact or separate from each other. The driving component is coupled to the circuit board. When the driving component receives a communication signal, it drives the conductive sheet at the lower end of the high-gain antenna body. It is in contact with the conductive seat in the first installation slot to connect the high-gain antenna body and the circuit board.

As a further improvement of the present invention, the drive assembly includes a drive motor, a controller, a drive gear sleeved on the rotating shaft of the drive motor, and a driven gear rotatably disposed on the groove wall of the second installation groove. The outer side walls of the gain antenna body and the low gain antenna body are provided with racks extending along their length directions, and are respectively arranged in the first installation slot and the second installation slot so as to be able to slide up and down, and the drive motor is embedded in the On the groove wall of the first installation groove, the first installation groove and the second installation groove are arranged side by side, and the groove wall on the side of the first installation groove facing the second installation groove is provided with a first installation groove and a second The communication hole of the installation slot, the driven gear meshes with the rack on the low-gain antenna body, the driving gear meshes with the rack on the high-gain antenna body, and meshes with the driven gear after passing through the communication hole, so The drive motor is coupled to the controller, and is driven to rotate by the controller. The controller is coupled to the judging device. When the controller receives the communication signal, the controller drives the drive motor to rotate forward to drive the high-gain antenna body in the first position. Move down in the installation groove, and move up the low-gain antenna body in the second installation groove, so that the conductive sheet at the lower end of the high-gain antenna body is in contact with the conductive seat in the first installation groove, and the conductive sheet at the lower end of the low-gain antenna body is in contact with the first installation groove. The conductive seats in the two installation slots are separated from each other.

As a further improvement of the present invention, the drive assembly includes a rotary motor, and the conversion base is provided with a first reversing slot and a second reversing slot at positions close to the first installation slot and the second installation slot, respectively. An inverted slot is communicated with the first installation slot, the second inverted slot is communicated with the second installation slot, and the lower ends of the high-gain antenna body and the low-gain antenna body are respectively connected with the first and second installation slots. The slot wall is hinged, the rotating motor is arranged on the slot wall of the first installation slot, and the rotating shaft is connected with the lower end of the high-gain antenna body to rotate and drive the high-gain antenna body to turn down into the first reversing slot or The first installation groove and the second installation groove are arranged side by side, and the groove wall on the side of the first installation groove facing the second installation groove is provided with a through-the-first installation groove. and the communication holes of the second installation slot, the lower ends of the high-gain antenna body and the low-gain antenna body are provided with annular teeth that mesh with each other through the communication holes. When the high-gain antenna body is turned into the first inverted slot, The low-gain antenna body is turned up from the second inverted slot, the conductive sheet at the lower end of the high-gain antenna body is separated from the conductive seat in the first installation slot, and the conductive sheet at the lower end of the low-gain antenna body is separated from the conductive base in the second installation slot. The bases are in contact with each other. When the high-gain antenna body is turned up from the first reversing slot, the low-gain antenna body is turned into the second reversing slot, and the conductive sheet at the lower end of the high-gain antenna body is connected to the conductive sheet in the first installation slot. The bases are in contact with each other, and the conductive sheet at the lower end of the low-gain antenna body is separated from the conductive base in the second installation groove.

The beneficial effect of the present invention is that through the setting of the casing, the circuit board in the casing and the antenna, an output signal can be effectively realized to the antenna, and then output to the external receiver through the antenna, and the setting of the phase adjustment device can Effective realization of the phase adjustment of the signal output from the circuit board to the antenna can effectively avoid the problem of mutual cancellation of signals caused by the mismatch of the phase signals. The phase adjustment component is used to adjust the phase of the signal, and by setting the phase adjustment component into the main shaft coil and the phase adjustment coil, the signal transmission can be realized by the mutual inductance of the main shaft coil and the phase adjustment coil. , the relative angle between the phase modulation coil and the main shaft coil can be effectively adjusted, so that the phase of the signal finally output through the phase modulation coil can be adjusted.

Description of drawings

Fig. 1 is the internal structure diagram of the signal generator of the present invention;

FIG. 2 is an overall structural diagram of Embodiment 1 of the driving assembly of the antenna in FIG. 1;

FIG. 3 is an overall structural diagram of Embodiment 2 of the driving assembly of the antenna in FIG. 1 .

Detailed ways

The present invention will be further described in detail below with reference to the embodiments given in the accompanying drawings.

Referring to FIGS. 1 to 3, a signal generator with adjustable phase in this embodiment includes a casing, a circuit board arranged in the casing, and an antenna arranged on the casing, the circuit board and the antenna passing through The circuit board includes a signal generating board and a phase adjusting device a, the phase adjusting device a is coupled with the signal generating board, and is used for receiving the signal output by the signal generating board, and adjusting the phase of the signal to output, so The phase adjusting device a includes a housing a1 and a phase adjusting component a2 arranged in the housing a1, the housing a1 is in the shape of a hollow cylinder with closed ends, and the phase adjusting component a2 includes a main shaft coil a21 and a phase adjusting coil a22, The main shaft coil a21 is coaxially fixed in the casing a1, and one end of the main shaft coil a21 is coaxially rotatable with a phase adjustment disk a23, the phase adjustment disk a23 is arranged on the inner wall of the end of the casing a1, and the One end of the phase coil a22 is eccentrically fixed on the end of the phase modulation disc a23 facing away from the inner wall of the end of the housing a1, and the other end is coupled to the antenna for outputting the phase-modulated signal to the antenna. The housing a1 is opposite to the phase-modulated signal. One end of the disk a23 is provided with a rotating assembly a3 for driving the rotation of the phase modulation disk a23. In the process of using the signal generator of this embodiment, the wireless communication signal is first output through the circuit board in the casing, and then enters the phase adjustment device. in a, and then input into the antenna after the phase adjustment is performed by the phase adjustment device a, so that a phase adjustment effect for the signal can be effectively achieved, so that there will be no communication in the prior art. The mutual cancellation caused by the mismatch makes the communication quality worse. In the process of phase adjustment by the phase adjustment device a, it is mainly adjusted by the phase adjustment component a2. During the adjustment process of the phase adjustment component a2, it is mainly By inputting the signal into the main shaft coil a21, an induced magnetic field is formed around the main shaft coil a21, and then the phase modulation coil a22 and the magnetic field are used to induce a current corresponding to the signal. The angle is the phase angle, so in the process of phasing, it is only necessary to drive the phasing disc a23 to rotate through the rotating component a3 to effectively realize the rotation with the phasing coil a22, so as to change the phasing coil a22 and the main shaft coil a21. In this way, the effect of adjusting the output phase of the signal can be effectively achieved. Therefore, compared with the method of using software for phase adjustment in the prior art, the overall structure and operation are simple, and no professional knowledge is required. The phase adjustment can be realized by driving the phase adjustment disk a23 to rotate by the phase component a2. Compared with the software operation method in the prior art, the operation process is simpler, so it can be well applied to the phase adjustment operation of ordinary users.

As an improved specific embodiment, the rotating assembly a3 includes a connecting bracket a31 and a rotatable rotating handle a32 disposed on the connecting bracket a31, and an end face of the casing a1 relative to one end of the phase adjusting plate a23 is provided with a Rotation hole a11, the phase adjustment plate a23 is rotatably arranged in the rotation hole a11, the connecting bracket a31 is fixedly connected to the end face of the housing a1, one end of the rotating handle a32 is coaxially fixedly connected to the phase adjustment plate a23, The other end is rotatably connected to the connecting bracket a31. By using the setting of the connecting bracket a31, a support can be effectively formed on the end of the shell a1 for the rotating handle a32 to be rotatably connected, and then the rotating handle a32 can be used again. The phase adjustment of the signal is realized by rotating the phase adjustment disc a23, so that the effect of phase adjustment of the signal phase can be achieved simply and effectively. Therefore, compared with the software phase adjustment method in the prior art, the operation is more convenient and fast. .

As an improved specific embodiment, a pointer a321 is fixedly connected to the end of the rotating handle a32 facing away from the phase modulation disk a23, and the connecting bracket a31 is provided with an angle scale indicated by the pointer a321 at the position close to the pointer a321. The setting of the angle scale can cooperate with the pointer a321 to indicate the current rotation angle of the rotary handle a32, that is, the rotation angle of the phase modulation disk a23, which in turn reflects the angle between the phase modulation coil a22 and the main shaft coil a21, so Human-computer interaction can be performed with people, so that people can know the angle between the phase modulation coil a22 and the main shaft coil a21 at this time, and then know the phase angle of the signal at this time.

As an improved specific embodiment, a rotating groove a111 is opened on the hole wall of the rotating hole a11, the side of the phase modulation disk a23 is rotatably embedded in the rotating groove a111, and the connecting bracket a31 includes a connecting bracket a31. The disk a311 and several connecting rods a312, one end of the several connecting rods a312 is fixedly connected with the side of the connecting disk a311 and distributed in a circle, and the other end is fixedly connected with the shell a1, and the handle a32 faces away from the phase adjustment disk a23 One end of the connecting plate a311 protrudes coaxially from the end face of the connecting plate a311. The pointer a321 and the angle scale are both arranged on the end of the connecting plate a311 facing away from the phase adjusting plate a23. The setting of the rotating groove a111 can effectively realize the phase adjustment. The disk a23 is rotatably connected to the rotation hole a11, and the connecting bracket a31 is set as the connecting rod a312 and the phase adjusting disk a23, so that an overhead bracket can be formed at the end of the shell a1, so that the handle a32 and the pointer a321 And the angle scale can be better set on the end of the shell a1.

As an improved specific embodiment, the antenna includes a high-gain antenna body 1 , a low-gain antenna body 2 and a conversion device 3 , and the high-gain antenna body 1 and the low-gain antenna body 2 are connected to the circuit board through the conversion device 3 . Coupling, connected or disconnected with the circuit board under the control of the conversion device 3, the conversion device 3 has a control terminal, the control terminal is coupled with the circuit board, the circuit board judges the communication distance, and outputs long-distance communication signals or Short-distance communication signal, when the control terminal receives the long-distance communication signal output by the circuit board, the conversion device 3 connects the high-gain antenna body 1 and the circuit board, because the wireless communication process is affected by the distance between the two devices that communicate with each other. Influence, when the communication distance is short, the use of low-gain antenna body 2 can maximize data integrity, and when the communication distance is long, the use of high-gain antenna body 1 can increase the signal strength of communication and improve the corresponding In this way, the high-gain antenna body 1, the low-gain antenna body 2 and the conversion device 3 can effectively realize the free conversion between the high- and low-gain antenna bodies, so that the communication quality in the process of wireless communication reaches the highest level.

As an improved specific embodiment, the conversion device 3 includes a conversion base 31 and a conductive conversion assembly 32, the conductive conversion assembly 32 is arranged in the conversion base 31, and a first installation slot is opened on the upper side of the conversion base 31 311 and the second installation groove 312, the conductive conversion assembly 32 includes two conductive seats 321 respectively disposed at the bottom of the first installation groove 311 and the second installation groove 312 in a one-to-one correspondence. Coupled with the circuit board, the lower ends of the high-gain antenna body 1 and the low-gain antenna body 2 are attached with conductive sheets 4, and the lower ends of the high-gain antenna body 1 and the low-gain antenna body 2 are respectively set in a one-to-one correspondence. In the first installation groove 311 and the second installation groove 312, the first installation groove 311 and the second installation groove 312 are provided with a driving component 5 for driving the conductive sheet 4 and the conductive base 321 to contact or separate from each other, so The driving component 5 is coupled to the circuit board. When the driving component 5 receives the communication signal, the conductive sheet 4 at the lower end of the high-gain antenna body 1 is driven to contact the conductive seat 321 in the first installation slot 311, and the high-gain antenna is connected. The body 1 and the circuit board can be effectively provided with a space for the high-gain antenna body 1 and the low-gain antenna body 2 to be installed through the installation of the conversion base 31 and the first installation groove 311 and the second installation groove 312. The setting of the conversion component 32 can realize the switching between the high-gain antenna body 1 and the low-gain antenna body 2 by whether the high-gain antenna body 1 and the low-gain antenna body 2 are electrically connected to the circuit board. , and through the setting of the conductive sheet 4 and the conductive seat 321, whether the high-gain antenna body 1 and the low-gain antenna body 2 are electrically connected to the circuit board can be realized by whether the conductive sheet 4 and the conductive seat 321 are in contact. And through the setting of the driving component 5 , it is possible to effectively realize the reception of communication signals to drive the conductive sheet 4 to be electrically connected to the conductive base 321 , so as to realize the effect of connecting the circuit board and the high-gain antenna body 1 and the circuit board and the low-gain antenna body 2 , it is well realized that the low-gain antenna body 2 is connected during short-distance communication, and the high-gain antenna body 1 is connected during long-distance data communication, which further improves the communication quality.

As an improved specific embodiment, the drive assembly 5 includes a drive motor 51, a controller, a drive gear 53 sleeved on the rotating shaft of the drive motor 51, and a rotatable gear 53 disposed on the groove wall of the second installation groove 312. The driven gear 54, the outer side walls of the high-gain antenna body 1 and the low-gain antenna body 2 are provided with racks extending along the length direction thereof, and are respectively disposed in the first installation slot 311 and the first installation slot 311 and the second In the second installation grooves 312, the drive motor 51 is embedded in the groove wall of the first installation groove 311. The first installation groove 311 and the second installation groove 312 are arranged side by side, and the first installation groove 311 faces the second installation groove 311. The slot wall on one side of the installation slot 312 is provided with a communication hole penetrating the first installation slot 311 and the second installation slot 312 , the driven gear 54 meshes with the rack on the low-gain antenna body 2 , and the drive gear 53 is connected to the The rack on the high-gain antenna body 1 meshes with the driven gear 54 after passing through the communication hole. The drive motor 51 is coupled to the controller and is driven to rotate by the controller. When the controller receives the communication signal, the controller drives the drive motor 51 to rotate forward to drive the high-gain antenna body 1 to move down in the first installation slot 311 , and the low-gain antenna body 2 to move up in the second installation slot 312 The conductive sheet 4 at the lower end of the high-gain antenna body 1 is in contact with the conductive seat 321 in the first installation groove 311, and the conductive sheet 4 at the lower end of the low-gain antenna body 2 is separated from the conductive seat 321 in the second installation groove 312. , in the process of driving the high-gain antenna body 1 and the circuit board by the driving component 5, first the driving motor 51 will receive the communication signal and act, and then the rotating shaft of the driving motor 51 will rotate forward, which will drive the driving gear 53 to rotate forward. During the rotation of the driving gear 53, because the driven gear 54 and the rack on the high-gain antenna body 1 mesh with the driving gear 53, the high-gain antenna body 1 will move downward due to the driving of the rack, and the driven gear 54 will be reversed, so that the low-gain antenna body 2 will move upwards due to the drive of the rack, so that the conductive sheet 4 at the lower end of the high-gain antenna body 1 will be in contact with the conductive seat 321 in the first installation slot 311. so that the high-gain antenna body 1 is electrically connected to the circuit board, and the conductive sheet 4 at the lower end of the low-gain antenna body 2 is separated from the conductive seat 321 in the second mounting slot 312, so that the low-gain antenna body 2 and the circuit board are separated. Separation, so that the high-gain antenna body 1 is used for signal communication in the process of communication, which ensures the communication quality, and also prevents the low-gain antenna body 2 from being connected while the high-gain antenna body 1 is connected. The problem of confusion caused by communication, in this embodiment, the first installation groove 311 and the second installation groove 312 can be provided with baffles to reduce the two notches, so that the high-gain antenna body 1 and the low-gain antenna body 1 can be reduced. The antenna body 2 can slide up and down in the first installation groove 311 and the second installation groove 312 , wherein the controller in this embodiment is an existing motor controller, and thus will not be repeated in this embodiment.

As an improved specific implementation manner, the drive assembly 5 includes a rotating motor 55, and the conversion base 31 is provided with a first reversing slot 313 and a first reversing slot 313 and a first reversing slot 313 and a first reversing slot 313 and a second mounting slot 312 respectively. Two inversion slots 314, the first inversion slot 313 communicates with the first installation slot 311, the second inversion slot 314 communicates with the second installation slot 312, the high-gain antenna body 1 and the low-gain antenna body The lower ends of 2 are hinged with the groove walls of the first installation groove 311 and the second installation groove 312 respectively, the rotating motor 55 is arranged on the groove walls of the first installation groove 311, and the rotating shaft is connected with the lower end of the high-gain antenna body 1, The high-gain antenna body 1 is rotated to drive the high-gain antenna body 1 to be turned down into the first reversing slot 313 or turned up and turned out from the first reversing slot 313 . The first installation slot 311 is opposite to the second installation slot 312 Arranged side by side, the groove wall of the first installation groove 311 facing the second installation groove 312 is provided with a communication hole penetrating the first installation groove 311 and the second installation groove 312. The high-gain antenna body 1 and the low-gain antenna body The lower ends of 2 are provided with annular teeth that mesh with each other through the communication holes and the gears. When the high-gain antenna body 1 is turned into the first inverted slot 313, the low-gain antenna body 2 is turned up from the second inverted slot 314. , the conductive sheet 4 at the lower end of the high-gain antenna body 1 is separated from the conductive seat 321 in the first installation slot 311, and the conductive sheet 4 at the lower end of the low-gain antenna body 2 is in contact with the conductive seat 321 in the second installation slot 312. When the high-gain antenna body 1 is turned up from the first reversing slot 313 , the low-gain antenna body 2 is turned into the second reversing slot 314 , the conductive sheet 4 at the lower end of the high-gain antenna body 1 and the first mounting slot 311 The conductive bases 321 are in contact with each other, and the conductive sheet 4 at the lower end of the low-gain antenna body 2 is separated from the conductive bases 321 in the second installation groove 312. In this way, the contact and separation between the conductive sheet 4 and the conductive base 321 can be realized, so that when one of the antenna bodies is connected, the other antenna body is not connected. The arrangement of the slot 313 and the second reversing slot 314 can effectively store the unused antenna body and avoid the problem of mutual interference during the communication process. The conductive base 321 in this embodiment adopts elastic In the process of rotating the lower end of the antenna body, it can be squeezed and contacted better, and the contact between the conductive sheet 4 and the conductive base 321 can be maintained. There are teeth meshing with the ring teeth, so that when one of the antenna bodies is placed upside down, the conductive sheet 4 can be well meshed with the ring teeth for transmission.

To sum up, the signal generator of this embodiment can effectively realize wireless communication through the setting of the circuit board and the antenna, and through the setting of the phase adjusting device, the phase of the signal output by the signal generator can be adjusted to avoid the signal The problem that the signal caused by the phase mismatch with the received waveform phase of the receiver is cancelled and the communication quality is degraded.

The above are only the preferred embodiments of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions under the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims (8)

1. A signal generator with adjustable phase is characterized in that: comprising a casing and a circuit board arranged in the casing and an antenna arranged on the casing, the circuit board and the antenna are connected by wires, and the circuit The board includes a signal generating board and a phase adjusting device (a), the phase adjusting device (a) is coupled with the signal generating board, and is used for receiving the signal output by the signal generating board, and adjusting the phase of the signal to output, the phase The adjusting device (a) comprises a casing (a1) and a phase adjusting assembly (a2) arranged in the casing (a1), the casing (a1) is in the shape of a hollow cylinder with closed ends, and the phase adjusting assembly (a2) It includes a main shaft coil (a21) and a phase modulation coil (a22), the main shaft coil (a21) is coaxially fixed in the casing (a1), and one end of the main shaft coil (a21) is coaxially rotatable with a phase modulation disc ( a23), the phase modulation disk (a23) is arranged on the inner wall of the end of the casing (a1), and one end of the phase modulation coil (a22) is eccentrically fixed on the end of the phase modulation disk (a23) facing away from the casing (a1). On one end of the inner wall, the other end is coupled to the antenna for outputting the phase-modulated signal to the antenna. One end of the casing (a1) opposite to the phase-modulating disk (a23) is provided with a drive for the phase-modulating disk (a23) Rotary swivel assembly (a3). 2. The signal generator with adjustable phase according to claim 1, wherein the rotating assembly (a3) comprises a connecting bracket (a31) and a rotatable rotating handle arranged on the connecting bracket (a31) (a32), a rotation hole (a11) is opened on the end face of the casing (a1) opposite to one end of the phase modulation disk (a23), and the phase modulation disk (a23) is rotatably arranged in the rotation hole (a11) , the connecting bracket (a31) is fixedly connected with the end face of the casing (a1), one end of the rotating handle (a32) is coaxially and fixedly connected with the phase modulation plate (a23), and the other end is rotatably connected with the connecting bracket (a31) . 3. The signal generator with adjustable phase according to claim 2, characterized in that: a pointer (a321) is fixedly connected to one end of the rotating handle (a32) facing away from the phase modulation disk (a23), and the connection An angle scale for the pointer (a321) to indicate is provided on the position of the bracket (a31) close to the pointer (a321). 4. The signal generator with adjustable phase according to claim 3, characterized in that: a rotating groove (a111) is opened on the hole wall of the rotating hole (a11), and the The side is rotatably embedded in the rotation groove (a111), the connecting bracket (a31) includes a connecting plate (a311) and several connecting rods (a312), one end of the several connecting rods (a312) is connected with the connecting plate The side of (a311) is fixedly connected and distributed in a circle, and the other end is fixedly connected to the shell (a1). Passing out, the pointer (a321) and the angle scale are both arranged on the end of the connecting plate (a311) facing away from the phase adjusting plate (a23). 5. The signal generator with adjustable phase according to claim 1, 2 or 3, wherein the antenna comprises a high-gain antenna body (1), a low-gain antenna body (2) and a conversion device (3) ), the high-gain antenna body (1) and the low-gain antenna body (2) are both coupled to the circuit board through the conversion device (3), and are controlled or disconnected from the circuit board by the conversion device (3). The conversion device (3) has a control terminal, the control terminal is coupled with the circuit board, the circuit board judges the communication distance, and outputs a long-distance communication signal or a short-distance communication signal, when the control terminal receives the long-distance communication output by the circuit board. When the signal is received, the converting device (3) connects the high-gain antenna body (1) and the circuit board. 6. The signal generator with adjustable phase according to claim 5, wherein the conversion device (3) comprises a conversion base (31) and a conductive conversion assembly (32), and the conductive conversion assembly (32) ) is arranged in the conversion base (31), the upper side of the conversion base (31) is provided with a first installation groove (311) and a second installation groove (312), and the conductive conversion components (32) include a one-to-one correspondence two conductive bases (321) disposed at the bottom of the first installation groove (311) and the second installation groove (312), the two conductive bases (321) are both coupled to the circuit board, and the high-gain antenna Conductive sheets (4) are attached to the lower ends of the body (1) and the low-gain antenna body (2), and the lower ends of the high-gain antenna body (1) and the low-gain antenna body (2) are respectively arranged in a one-to-one correspondence. Inside the first installation groove (311) and the second installation groove (312), the first installation groove (311) and the second installation groove (312) are provided with a conductive sheet (4) and a conductive seat (321) for driving ) mutually contacting or separating drive assemblies (5), the drive assemblies (5) are coupled with the circuit board, and when the drive assemblies (5) receive a communication signal, drive the conductive sheet ( 4) Contact with the conductive seat (321) in the first installation groove (311), and connect the high-gain antenna body (1) and the circuit board. 7. The signal generator with adjustable phase according to claim 6, characterized in that: the drive assembly (5) comprises a drive motor (51), a controller and a A driving gear (53) and a rotatable driven gear (54) arranged on the groove wall of the second installation groove (312), the outer side walls of the high-gain antenna body (1) and the low-gain antenna body (2) The racks are provided with racks extending along their length directions, and are respectively arranged in the first installation groove (311) and the second installation groove (312) so as to slide up and down, and the drive motor (51) is embedded in the first installation groove (311) and the second installation groove (312). On the groove wall of an installation groove (311), the first installation groove (311) and the second installation groove (312) are arranged side by side, and the first installation groove (311) faces the second installation groove (312) side The groove wall of the antenna is provided with a communication hole penetrating the first installation groove (311) and the second installation groove (312), the driven gear (54) meshes with the rack on the low-gain antenna body (2), and the drive The gear (53) meshes with the rack on the high-gain antenna body (1), and after passing through the communication hole, meshes with the driven gear (54) through the gear, and the drive motor (51) is coupled to the controller and is controlled The controller is driven to rotate, and the controller is coupled to the decision device. When the controller receives the communication signal, the controller drives the driving motor (51) to rotate forward to drive the high-gain antenna body (1) to the first installation slot (311). Move downward, the low-gain antenna body (2) moves up in the second installation slot (312), so that the conductive sheet (4) at the lower end of the high-gain antenna body (1) and the conductive seat in the first installation slot (311) (321) are in contact, and the conductive sheet (4) at the lower end of the low-gain antenna body (2) is separated from the conductive seat (321) in the second installation groove (312). 8. The signal generator with adjustable phase according to claim 6, characterized in that: the drive assembly (5) comprises a rotary motor (55), and the conversion base (31) is close to the first installation slot (311) ) and the second installation groove (312) are respectively provided with a first inversion groove (313) and a second inversion groove (314), the first inversion groove (313) and the first installation groove (311) ) is connected, the second inverted slot (314) is communicated with the second installation slot (312), and the lower ends of the high-gain antenna body (1) and the low-gain antenna body (2) are respectively connected with the first installation slot (311). ) is hinged with the groove wall of the second installation groove (312), the rotating motor (55) is arranged on the groove wall of the first installation groove (311), and the rotating shaft is connected with the lower end of the high-gain antenna body (1) to The rotation drives the high-gain antenna body (1) to be turned down into the first reversing slot (313) or turned up and out of the first reversing slot (313). The first installation slot (311) are arranged side by side with the second installation groove (312), and the groove wall of the first installation groove (311) facing the second installation groove (312) is provided with a penetrating first installation groove (311) and a second installation groove (312) ), the lower ends of the high-gain antenna body (1) and the low-gain antenna body (2) are provided with annular teeth that mesh with the gears through the communication holes. When the high-gain antenna body (1) is turned into the first When the low-gain antenna body (2) is turned up from the second inversion slot (314), the conductive sheet (4) at the lower end of the high-gain antenna body (1) is connected to the first installation slot (313). The conductive seats (321) in 311) are separated from each other, and the conductive sheet (4) at the lower end of the low-gain antenna body (2) is in contact with the conductive seat (321) in the second mounting groove (312). 1) When turning up from the first reversing slot (313), the low-gain antenna body (2) is turned into the second reversing slot (314), and the conductive sheet (4) at the lower end of the high-gain antenna body (1) In contact with the conductive seat (321) in the first installation groove (311), the conductive sheet (4) at the lower end of the low-gain antenna body (2) is separated from the conductive seat (321) in the second installation groove (312).