Synchronizer displacement sensor of PCB technology

Abstract

The invention discloses a synchronizer displacement sensor of a PCB (printed circuit board) process, which mainly relates to the technical field of synchronous displacement sensors and comprises a stator, a rotor rotatably arranged in the stator, a coupling coil arranged on one side of the rotor, a stator circuit board arranged on the stator, a rotor circuit board arranged on the rotor and a conversion gear mounted on one side of the rotor. A conversion rack is arranged below the conversion gear, a gear set is fixedly connected to the rear side of the rotor, an angle scale is rotationally arranged on one side of the gear set, a bevel pinion set is arranged between the angle scale and the gear set, a speed reduction assembly is further rotationally arranged in the direction perpendicular to the gear set, and a counting display assembly is arranged below the speed reduction assembly. According to the invention, the change angle can be accurately displayed.

Description

Technical Field

[0001] The present invention mainly relates to the technical field of synchronous displacement sensors, and in particular to a synchronizer displacement sensor of a PCB process. Background Art

[0002] Synchronizer is an electromagnetic induction multi-stage position sensor, which is widely used in industrial industries. For example, it is used in the automotive industry. When a car is driving, the driver often needs to adjust the speed according to the speed limit of different roads. During high-speed driving, if the gears are directly switched through the gear lever, it is easy to cause gear knocking. In severe cases, it will cause a car failure and endanger safety. Therefore, a synchronizer structure is often required at the gearbox position to avoid this situation. However, no matter how accurate the mechanism is, it will wear out over time. Therefore, it is necessary to monitor it at all times during use to effectively avoid accidents. This position requires a displacement sensor to detect the synchronizer displacement position during the gear shifting process to know whether the movement size corresponds to the gear shift. At present, most structures often use electrical devices to detect displacement parameters, and electrical devices are very prone to failure due to the influence of external (temperature, collision) and internal (material, current) factors.

[0003] Therefore, the present invention proposes a solution. Even if problems occur later, the mechanical sensor can be relied on to continue to be used temporarily as a substitute, and finally repaired and replaced. During the repair, it is also possible to understand whether the fault is caused by observing whether the mechanical parameters of the synchronizer displacement correspond to the gear shift parameters, thereby reducing the accident rate. The structure is designed according to a PCB process function design requirement, and the synchronizer used in the car is a manual transmission lock ring synchronizer. Summary of the invention

[0004] 1. Technical issues to be resolved In view of the above-mentioned problems, the present invention needs to provide a synchronizer displacement sensor of PCB process, which is used in combination with mechanical and electrical methods, and is designed by taking the manual transmission lock ring synchronizer as an example. It is required to accurately express the displacement size of the synchronizer caused by the shifting process in the form of angles and numbers, so as to facilitate backup use and facilitate direct observation and maintenance when a fault occurs. The lock ring synchronizer is designed as an example. The lock ring synchronizer in the drawings of the present invention only has the coupling sleeve parts that need to be used in conjunction therewith, so the remaining lock rings, spline hubs, sliders, and locating pins are not drawn.

[0005] (II) Technical solution In view of the above technical problems, the present invention provides a synchronizer displacement sensor of PCB process, comprising a stator, a rotor rotatably arranged inside the stator, a coupling coil being arranged on one side of the rotor, a stator circuit board being arranged on the other side, the stator circuit board being fixedly mounted on the stator, the rotor being also fixedly connected to the rotor circuit board, a conversion gear being fixedly mounted on the front side of the rotor, a conversion rack being slidably arranged below the conversion gear, the conversion rack being slidably matched with a vehicle commutator coupling sleeve, a gear set being fixedly connected to the rear side of the rotor, an angle disk being rotatably arranged on one side of the gear set, a small bevel gear set being arranged between the angle disk and the gear set, a reduction assembly being also rotatably arranged in a direction perpendicular to the gear set, a counting and display assembly being arranged below the reduction assembly.

[0006] Furthermore, the gear set includes a transmission pinion, which is fixedly mounted on the rotor, and a transmission large gear is fixedly mounted on the rear side of the transmission pinion. The transmission large gear cooperates with a small bevel gear set, and a group of small bevel gear sets are provided above and below the transmission large gear; the transmission pinion drives the reduction gear assembly to rotate.

[0007] Furthermore, the small bevel gear set includes two vertical gears, which are arranged up and down and fixed with a shaft. The upper vertical gear drives the angle plate to rotate, and the lower vertical gear forms a gear match with the large transmission gear. The angle gear is fixedly installed on the angle plate, an indicator arrow is provided on the angle plate, and a scale dial is provided on the inner ring of the angle plate.

[0008] Furthermore, the reduction gear assembly includes a reduction gear, which forms a gear fit with the transmission pinion, the reduction gear is fixedly connected to the reduction rod, the reduction rod is fixedly connected to the reduction gearwheel, the reduction gearwheel and the reduction pinion form a gear fit, the reduction pinion is fixedly connected to the counting pinion, and the reduction pinion drives the counting pinion to rotate; the counting pinion drives the counting display assembly to display the angle.

[0009] Furthermore, the counting display component includes a tens counting wheel, a units counting wheel is provided on one side of the tens counting wheel, a decimal counting wheel is provided on one side of the units counting wheel, the tens counting wheel, the units counting wheel and the decimal counting wheel are coaxially arranged and have numbers on their surfaces, a plurality of cylinders are evenly arranged on one side of the tens counting wheel, the units counting wheel and the decimal counting wheel, two cylinders are provided on the other side of the units counting wheel and the decimal counting wheel, and the plurality of cylinders of the decimal counting wheel form a gear match with the counting pinion.

[0010] Furthermore, a first counting and carrying wheel is rotatably provided below the tens counting wheel and the ones counting wheel, and a second counting and carrying wheel is rotatably provided below the ones counting wheel and the decimal counting wheel; the first counting and carrying wheel has the same structure as the second counting and carrying wheel; four small tooth structures are evenly arranged on the circumference of the first counting and carrying wheel, the multiple cylinders of the tens counting wheel cooperate with the small tooth structure of the first counting and carrying wheel, the two cylinders on the ones counting wheel cooperate with the small tooth structure on the first counting and carrying wheel, the small tooth structure on the second counting and carrying wheel cooperates with the multiple cylinders of the ones counting wheel, and the small gear structure on the second counting and carrying wheel cooperates with the two cylinders on the decimal counting wheel.

[0011] Furthermore, the rotor and the stator are both provided with coils, and the rotor coils and the stator coils are used to induce an AC signal that forms a certain corresponding relationship with the current rotation angle, and the AC signal is input into the synchronizer solution circuit through a wire for angle solution.

[0012] Furthermore, the coupling coil transmits the induction signal, couples the signal induced by the rotor coil to the stator coil, and realizes the continuous rotation of the angle measurement system.

[0013] Furthermore, the synchronizer resolution circuit performs angle resolution on the AC signal induced by the synchronizer body, and then transmits it to the main control system.

[0014] Furthermore, the rotor coil and the stator coil are processed by a PCB copper foil engraving process.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention is provided with a stator, a rotor, a coupling coil, a stator circuit board, a rotor circuit board, a conversion gear, a conversion rack, and a vehicle commutator combination sleeve; firstly, the commutation angle of the vehicle can be known by utilizing the electrical principle, and the rotor coil and the stator coil of the present invention utilize the PCB copper foil engraving process, wherein the excitation coil can be engraved on the PCB rotor substrate by means of winding design, which can save the workload of the traditional excitation coil winding, and the 360-pole pair coil is designed on the single-layer copper foil of the PCB stator, when the PCB rotor is applied When the excitation signal is added, an alternating electromagnetic field will be generated, and the PCB stator coil winding will induce an alternating current that is related to the current rotation angle. The PCB engraving process also has the advantages of simple processing and low cost; 2. The coupling steel ring can realize the continuous rotation of the angle sensor. A certain amount of copper wire windings of different thicknesses need to be wound in the coupling steel ring to facilitate the complete transmission of the signal induced by the rotor to the PCB stator. At the same time, the coupling steel ring is designed to be placed in the inner ring to avoid crosstalk between surrounding magnetic signals and affect the signal quality; 3. The synchronizer solution circuit in the present invention includes an excitation The magnetic generating circuit, the preamplifier circuit, the AD conversion circuit and the DSP solving circuit are designed on the back of the PCB stator substrate, which can greatly reduce the space size and production cost of the displacement sensor. At this time, the AC signal induced by the PCB stator can be directly transmitted to the solving circuit through the internal engraving method. In order to avoid the mutual interference between the AC signal and the electromagnetic induction signal of the coupling steel ring, the wiring design adds a twisted magnetic shielding design, which effectively enhances the anti-interference performance of the induced electrical signal. The ultimate purpose of the above-mentioned setting is to improve the accuracy of the synchronizer displacement sensor and can more accurately display the angle value; 4. The present invention also provides a gear set, an angle plate, a reduction assembly, and a counting display assembly. The gear set can transmit the conversion angle to the angle plate and drive the angle plate to rotate at the same time. The angle plate indicates the changed angle, and can also drive the counting display assembly to display the value under the drive of the reduction assembly, and accurately display the commutation angle. By using these mechanical parts in combination, the commutation angle can be displayed in a mechanical way. When there is a problem with the electrical method, the mechanical means can be used instead to ensure the safety of the car. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0017] Figure 2 It is a schematic diagram of the back side of the present invention.

[0018] Figure 3 It is a front view of the present invention.

[0019] Figure 4 for Figure 3 Section view at AA in the middle.

[0020] Figure 5 It is the right view of the present invention.

[0021] Figure 6 for Figure 5 Cross-sectional view at BB in the middle.

[0022] Figure 7 It is a partial first angle schematic diagram of the present invention.

[0023] Figure 8 It is a partial second angle schematic diagram of the present invention.

[0024] Fig. 9 This is a schematic diagram of the system flow when the present invention is used in an electrical manner.

[0025] Fig.10 This is the rotor coil circuit diagram of the present invention.

[0026] Fig.11 This is a circuit diagram of the stator coil of the present invention.

[0027] Figure numbers: 1-sensor mechanism; 101-housing; 102-annular housing; 103-angle disk; 104-display port; 105-stator; 106-conversion gear; 107-conversion rack; 108-slideway seat; 109-automobile commutator coupling sleeve; 110-coupling coil; 111-rotor; 112-rotor circuit board; 113-stator circuit board; 114-transmission gear; 115-vertical gear; 116-angle gear; 117-reduction gear; 118-transmission pinion; 119-extension plate; 120-reduction rod; 121-reduction gear; 122-counting pinion; 123-reduction pinion; 124-tens counting wheel; 125-units counting wheel; 126-counting carry first wheel; 127-counting carry second wheel; 128-fixed shaft; 129-decimal counting wheel. DETAILED DESCRIPTION

[0028] The present invention will be further described below in conjunction with specific embodiments. The present invention is explained by means of the illustrative embodiments and descriptions of the present invention, but is not intended to be a limitation of the present invention.

[0029] Example 1: Figure 1-Figure 8 The synchronizer displacement sensor of the PCB process shown in the figure comprises a sensor mechanism 1, the sensor mechanism 1 comprises a housing 101, and the housing 101 is provided with three display ports 104, and the display ports 104 are used to view angle numbers, such as Figure 1As shown, a dot is provided between the second and third display ports 104 from the left, and the dot represents a decimal point. The first display port 104 from the left displays the tens digit, the second display port 104 displays the ones digit, and the third display port 104 displays the last digit of the decimal point. An annular shell 102 is also fixedly mounted on the outer shell 101, and a stator 105 is fixedly connected to the annular shell 102.

[0030] Extension plates 119 are fixedly mounted on both sides of the housing 101 , and the extension plates 119 provide space for the rotation of the reduction gear 121 .

[0031] A rotor 111 is rotatably disposed inside the stator 105 . A coupling coil 110 is disposed on one side of the rotor 111 , and a stator circuit board 113 is disposed on the other side. The stator circuit board 113 is fixedly mounted on the stator 105 . A rotor circuit board 112 is also fixedly connected to the rotor 111 .

[0032] A conversion gear 106 is fixedly installed on the front side of the rotor 111, and a conversion rack 107 is slidably arranged below the conversion gear 106. A slide groove is provided on the conversion rack 107. The conversion rack 107 is slidably installed on a slide seat 108 using the slide groove. The slide seat 108 is fixedly installed on the stator 105. The conversion rack 107 is slidably matched with a vehicle commutator coupling sleeve 109. The vehicle commutator coupling sleeve 109 is a commutation device arranged in a machine. The machine can be the rotation of a car, or the steering of other devices or machines.

[0033] The gear set includes a transmission pinion 118, which is fixedly mounted on the rotor 111. A transmission gear 114 is fixedly mounted on the rear side of the transmission pinion 118. The transmission pinion 118 and the transmission gear 114 are coaxially fixedly connected to the rotor 111. The transmission gear 114 cooperates with a small bevel gear set, and a group of small bevel gear sets are provided above and below the transmission gear 114. The transmission pinion 118 drives the reduction gear assembly to rotate.

[0034] The small bevel gear set includes two vertical gears 115, which are arranged up and down. The two vertical gears 115 are fixed with a shaft, and the shaft is rotatably installed on the annular shell 102. The upper vertical gear 115 drives the angle plate 103 to rotate, and the lower vertical gear 115 forms a gear match with the transmission large gear 114; an angle gear 116 is fixedly installed on the angle plate 103, and the angle gear 116 forms a gear match with the upper vertical gear 115. An indicator arrow is provided on the angle plate 103, and a dial is provided on the inner ring of the angle plate 103 and located on the annular shell 102, and the indicator arrow can point out the angle.

[0035] The reduction gear assembly includes a reduction gear 117, which forms a gear match with a transmission pinion 118. The reduction gear 117 is fixedly connected to a reduction rod 120, which is rotatably mounted on the housing 101. The reduction rod 120 is fixedly connected to a large reduction gear 121, which forms a gear match with a reduction pinion 123. The reduction pinion 123 is rotatably mounted on the housing 101 using an axis, and the reduction pinion 123 is fixedly connected to a counting pinion 122, which is driven by the reduction pinion 123 to rotate the counting pinion 122; the counting pinion 122 drives the counting display assembly to display the angle.

[0036] The counting display component includes a tens counting wheel 124, a units counting wheel 125 is provided on one side of the tens counting wheel 124, a decimal counting wheel 129 is provided on one side of the units counting wheel 125, the tens counting wheel 124, the units counting wheel 125, and the decimal counting wheel 129 are coaxially rotatable and have numbers on their surfaces, a plurality of cylinders are evenly arranged on one side of the tens counting wheel 124, the units counting wheel 125, and the decimal counting wheel 129, two cylinders are provided on the other side of the units counting wheel 125 and the decimal counting wheel 129, and the plurality of cylinders of the decimal counting wheel 129 form a gear match with the counting pinion 122.

[0037] A first counting wheel 126 is provided below the tens counting wheel 124 and the ones counting wheel 125, and a second counting wheel 127 is provided below the ones counting wheel 125 and the decimal counting wheel 129. The first counting wheel 126 and the second counting wheel 127 have the same structure. Both the first counting wheel 126 and the second counting wheel 127 are rotatably mounted on a fixed shaft 128 fixedly provided on the housing 101. The first counting wheel 126 is provided with a first rotation shaft 128. Four small tooth structures are evenly arranged around the circumference. The multiple cylinders of the tens counting wheel 124 cooperate with the small tooth structure of the first counting and carry wheel 126. The two cylinders on the ones counting wheel 125 cooperate with the small tooth structure on the first counting and carry wheel 126. The small tooth structure on the second counting and carry wheel 127 cooperates with the multiple cylinders of the ones counting wheel 125. The small gear structure on the second counting and carry wheel 127 cooperates with the two cylinders on the decimal counting wheel 129.

[0038] Embodiment 2: The rotor 111 and the stator 105 are used to sense an AC signal that forms a certain corresponding relationship with the current rotation angle, and the AC signal is input to the rotor circuit board 112 through a wire for angle calculation.

[0039] The rotor 111 and the stator 105 of the present invention are both provided with coils. The display of the coils is omitted in the accompanying drawings, but according to the principle of electronic devices, the above-mentioned parts have coils. In the working principle of another usage mode of the present invention, the coils are used as an explanation. The PCB rotor coil, the PCB stator coil or the rotor coil, the stator coil are just named differently. The PCB rotor is the rotor 111, and the PCB stator is the stator 105.

[0040] The coupling coil 110 transmits the induction signal and couples the signal induced by the rotor 111 coil to the stator 105 coil to realize the continuous rotation of the angle measurement system.

[0041] The synchronizer resolution circuit performs angle resolution on the AC signal induced by the synchronizer body and then transmits it to the main control system.

[0042] The rotor 111 coil and the stator 105 coil are processed by the PCB copper foil engraving process, wherein the excitation coil can be engraved on the PCB rotor base through the winding design, which can save the workload of traditional excitation coil winding. The 360-pole pair coil is designed on the single-layer copper foil of the PCB stator. When the excitation signal is applied to the PCB rotor, an alternating electromagnetic field will be generated, and the PCB stator coil winding will induce an alternating current that is related to the current rotation angle.

[0043] A certain amount of copper wire of different thickness needs to be wound around the coupling steel ring to facilitate the complete transmission of the signal sensed by the rotor to the PCB stator. At the same time, the coupling steel ring needs to be placed in the position of the inner ring to avoid crosstalk between surrounding magnetic signals and affect the signal quality.

[0044] The synchronizer solver circuit includes an excitation generation circuit, a preamplifier circuit, an AD conversion circuit and a DSP solver circuit. The hardware circuit design of the synchronizer solver circuit is placed on the back of the PCB stator substrate, which can greatly reduce the space size and production cost of the displacement sensor. At this time, the AC signal induced by the PCB stator can be directly transmitted to the solver circuit through the internal engraving method. In order to avoid mutual interference between the AC signal and the electromagnetic induction signal of the coupling steel ring, a twisted pair magnetic shielding design is added to its wiring design, which effectively enhances the anti-interference performance of the induced electrical signal and improves the accuracy during use as a whole.

[0045] Working principle 2 of the present invention: When the automobile commutator sleeve 109 rotates, it will drive the conversion rack 107 to slide, and the conversion rack 107 will drive the conversion gear 106 to rotate, thereby causing the rotor 111 to rotate, and the PCB rotor 111 coil will rotate, coupling the generated electromagnetic signal to the stator 105 coil, thereby outputting a certain signal to the synchronizer solution circuit, and finally displaying the current angle value.

[0046] The synchronizer solver circuit generates an excitation signal which is input to the rotor 111 coil through wiring. At this time, the rotor 111 coil generates an alternating electromagnetic field, and the alternating electromagnetic signal is coupled to the stator 105 coil through the coupling coil 110, thereby transmitting the signal to the stator 105 coil. The stator 105 induces an alternating current which is related to the current rotation angle. The generated alternating current is output to the synchronizer solver circuit, thereby knowing the current change angle.

[0047] Working principle 1 of the present invention: The entire device is a sensor, which cooperates with the conversion rack 107 and the automobile commutator coupling sleeve 109 on the gear commutator structure of the automobile. When the automobile needs to shift gears during high-speed driving, the commutator needs to smoothly transition to make the drive gear engage. After starting the shift, for example, the shift lever will push the conversion rack 107 to switch gears in the positive direction of the length direction. At this time, a distance that needs to be moved is generated, and the distance is transmitted to the conversion gear 106 through the gear rack. The conversion gear 106 drives the rotor 111 to rotate, and the transmission large gear 114 and the transmission small gear 118 on the conversion gear 106 will rotate. The transmission large gear 114 drives the vertical gear 115 to rotate, and the vertical gear 115 engages with the angle gear 116 to drive the angle plate 103 to rotate. The arrow on the angle plate 103 shows the rotation angle.

[0048] The transmission pinion 118 is meshed with the reduction gear 117 to drive the reduction rod 120 and the reduction gear 121 to rotate, and the reduction gear 121 drives the reduction pinion 123 and the counting pinion 122 to rotate together, and at the same time, the counting pinion 122 drives the decimal counting wheel 129 to rotate, and the decimal counting wheel 129 will display the value of the single digit after rotating, and the two cylinders on the decimal counting wheel 129 will drive the second counting carry wheel 127 to rotate, and the second counting carry wheel 127 drives the single digit counting wheel 125 to rotate, and the single digit counting wheel 125 displays the single digit value. After the single digit counting wheel 125 rotates, the two cylinders will drive the first counting carry wheel 126 to rotate, and at the same time, the first counting carry wheel 126 will drive the tens counting wheel 124 to rotate, and the tens counting wheel 124 displays the value of the tens digit, and the rotation angle can be known at this time; if more digits need to be displayed, counting rotating plates and counting carry wheels can be further added.

[0049] Any matters not described in the present invention are applicable to the prior art.

Claims

1. A synchronizer displacement sensor of PCB technology, comprising a stator (105), characterized in that: A rotor (111) is rotatably arranged inside the stator (105). A coupling coil (110) is arranged on one side of the rotor (111), and a stator circuit board (113) is arranged on the other side. The stator circuit board (113) is fixedly mounted on the stator (105). The rotor (111) is also fixedly connected to a rotor circuit board (112). A conversion gear (106) is fixedly mounted on the front side of the rotor (111). A conversion rack (107) is slidably arranged below the conversion gear (106). The conversion rack (107) is slidably matched with a vehicle commutator coupling sleeve (109). A gear set is fixedly connected to the rear side of the rotor (111). An angle disc (103) is rotatably arranged on one side of the gear set. A small bevel gear set is arranged between the angle disc (103) and the gear set. A reduction assembly is also rotatably arranged in a direction perpendicular to the gear set. A counting and display assembly is arranged below the reduction assembly.

2. A synchronizer displacement sensor for PCB process according to claim 1, characterized in that: The gear set comprises a transmission pinion (118), the transmission pinion (118) being fixedly mounted on the rotor (111), a transmission large gear (114) being fixedly mounted on the rear side of the transmission pinion (118), the transmission large gear (114) being matched with a small bevel gear set, and a group of small bevel gear sets being provided above and below the transmission large gear (114); the transmission pinion (118) drives the reduction gear assembly to rotate.

3. The synchronizer displacement sensor of PCB process according to claim 2, characterized in that: The small bevel gear set comprises two vertical gears (115), the two vertical gears (115) are arranged up and down, and the two vertical gears (115) are fixed by a shaft, the upper vertical gear (115) drives the angle plate (103) to rotate, and the lower vertical gear (115) forms a gear match with the transmission large gear (114); an angle gear (116) is fixedly mounted on the angle plate (103), an indicating arrow is provided on the angle plate (103), and a scale is provided on the inner ring of the angle plate (103).

4. The synchronizer displacement sensor of PCB process according to claim 2, characterized in that: The reduction gear assembly comprises a reduction gear (117), the reduction gear (117) and the transmission pinion (118) forming a gear match, the reduction gear (117) being fixedly connected to the reduction rod (120), the reduction rod (120) being fixedly connected to the reduction gear (121), the reduction gear (121) and the reduction pinion (123) forming a gear match, the reduction pinion (123) being fixedly connected to the counting pinion (122), the reduction pinion (123) driving the counting pinion (122) to rotate; the counting pinion (122) driving the counting display assembly to display the angle.

5. The synchronizer displacement sensor of PCB process according to claim 4, characterized in that: The counting display assembly comprises a tens counting wheel (124), a ones counting wheel (125) is arranged on one side of the tens counting wheel (124), a decimal counting wheel (129) is arranged on one side of the ones counting wheel (125), the tens counting wheel (124), the ones counting wheel (125), and the decimal counting wheel (129) are coaxially rotatable and have numbers on their surfaces, a plurality of cylinders are evenly arranged on one side of the tens counting wheel (124), the ones counting wheel (125), and the decimal counting wheel (129), two cylinders are arranged on the other side of the ones counting wheel (125) and the decimal counting wheel (129), and the plurality of cylinders of the decimal counting wheel (129) form a gear match with a counting pinion (122).

6. The synchronizer displacement sensor of PCB process according to claim 5, characterized in that: A first counting and carrying wheel (126) is rotatably provided below the tens counting wheel (124) and the ones counting wheel (125), and a second counting and carrying wheel (127) is rotatably provided below the ones counting wheel (125) and the decimal counting wheel (129); the first counting and carrying wheel (126) and the second counting and carrying wheel (127) have the same structure; four small tooth structures are evenly arranged on the circumference of the first counting and carrying wheel (126); a plurality of cylinders of the tens counting wheel (124) cooperate with the small tooth structures of the first counting and carrying wheel (126); two cylinders on the ones counting wheel (125) cooperate with the small tooth structures on the first counting and carrying wheel (126); the small tooth structures on the second counting and carrying wheel (127) cooperate with a plurality of cylinders on the ones counting wheel (125); and the small gear structure on the second counting and carrying wheel (127) cooperates with two cylinders on the decimal counting wheel (129).

7. The synchronizer displacement sensor of PCB process according to claim 1, characterized in that: The rotor (111) and the stator (105) are both provided with coils, and the rotor (111) coil and the stator (105) coil are used to induce an alternating current signal that forms a certain corresponding relationship with the current rotation angle, and the alternating current signal is input into the synchronizer resolution circuit through a wire for angle resolution.

8. The synchronizer displacement sensor of PCB process according to claim 1, characterized in that: The coupling coil (110) is used to transmit an induction signal, coupling the signal induced by the rotor (111) coil to the stator (105) coil, thereby achieving continuous rotation of the angle measurement system.

9. The synchronizer displacement sensor of PCB process according to claim 8, characterized in that: The synchronizer resolution circuit performs angle resolution on the AC signal induced by the synchronizer body and then transmits it to the main control system.

10. The synchronizer displacement sensor of PCB process according to claim 8, characterized in that: The rotor (111) coil and the stator (105) coil are processed by a PCB copper foil engraving process.

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