A cart inductive positioning device
By working together with the magnetic card module, control module, and prompting module of the trolley sensing and positioning device, the device can detect and prompt whether the trolley is placed in a standardized manner in real time, which solves the problem of non-standard trolley placement in wafer foundries and improves the cleanliness and management level of the production site.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 捷捷微电(南通)科技有限公司
- Filing Date
- 2025-09-15
- Publication Date
- 2026-06-26
AI Technical Summary
The lack of standardized placement of trolleys in wafer foundries leads to problems such as random parking, obstruction of passageways, and stacking, affecting the cleanliness of the production site and logistics efficiency, and may also damage wafer carriers and the wafers inside.
The system employs a trolley sensing and positioning device, which includes a magnetic card module, a control module, a positioning marker module, and a prompting module. Through magnetic induction connection and electrical signal transmission, it can detect in real time whether the trolley is placed in the designated area and inform the operator through clear prompting signals.
This standardized placement of carts improved the cleanliness and management of the production site, prevented carts from being parked randomly and blocking passageways, and ensured the production efficiency and safety of the wafer foundry.
Smart Images
Figure CN224416002U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of stroller technology, and more specifically, to a stroller sensing and positioning device. Background Technology
[0002] In the wafer manufacturing industry, the production process of wafer foundries is highly precise and requires strict process control. Any non-standard operation at any stage can have a significant impact on the quality of wafer products, and even cause huge economic losses. Among them, wafer carriers, as the core components for loading and protecting wafers, directly affect the overall production progress and product yield through their transfer efficiency and safety within the production workshop. Trolleys, as key tools for transporting wafer carriers within the factory, are an important link connecting various production processes. They are used frequently and have a wide impact, and the standardized placement and management of trolleys has become an important part of the standardized management of the factory production site. From a production management perspective, the standardized placement of trolleys not only optimizes the space utilization efficiency within the factory and avoids problems such as blocked passageways and limited operating space caused by haphazard placement of trolleys, ensuring smooth production logistics; more importantly, in key scenarios such as customer audits and industry standard certifications, a neat and standardized trolley placement is a direct external reflection of a company's production management level and refined operational capabilities. It can effectively enhance the company's professional image and trustworthiness in the eyes of customers, providing strong support for the company to gain a competitive advantage in the market. Therefore, the standardized placement of trolleys has become an essential requirement for wafer foundries to improve production management quality and cultivate a positive corporate image.
[0003] However, current wafer foundries still employ relatively traditional and outdated methods for managing trolley placement, resulting in several technical shortcomings that urgently need to be addressed. Specifically: First, there is a lack of standardized guidelines for trolley placement, relying entirely on manual discretion for management, leading to significant instability in trolley placement. In actual production, due to factors such as the hectic work pace and varying levels of awareness among operators, problems frequently arise, including trolleys being parked haphazardly, obstructing aisles, and being stacked. This not only severely impacts the cleanliness and efficiency of the production site but also risks damaging wafer carriers and internal wafers due to trolley collisions, causing unnecessary losses for the company. Utility Model Content
[0004] The purpose of this application is to provide a stroller sensing and positioning device that enables the standardized placement of strollers.
[0005] The embodiments of this application are implemented as follows:
[0006] This application provides a stroller sensing and positioning device, including a magnetic card module disposed on the stroller body, a control module disposed in the stroller positioning area, a positioning mark module, and a prompting module. The control module is electrically connected to the positioning mark module and the prompting module respectively. The magnetic card module and the positioning mark module are magnetically connected. The positioning mark module detects the transmission signal of the magnetic card module and transmits it to the control module. The control module controls the prompting module to issue a prompting signal according to the transmission signal.
[0007] Optionally, as an implementable approach, the trolley positioning area is provided with an electrified circuit, the positioning identification module includes a first card reader and a second card reader connected in series on the electrified circuit, and the magnetic card module includes a first magnetic card that matches the first card reader and a second magnetic card that matches the second card reader.
[0008] Alternatively, as one possible implementation, the prompting module includes a buzzer connected to the power-on circuit, the buzzer being in communication with the power-on circuit.
[0009] Optionally, as an implementable method, the trolley positioning area is provided with a mounting pad, on which are provided a wire groove for placing the wire harness and a plurality of mounting slots communicating with the wire groove, through which the first card reader and the second card reader are respectively mounted.
[0010] Optionally, as an implementable approach, the positioning identification module further includes a light group connected to the power-on circuit, the light group being connected in series with the first card reader and the second card reader.
[0011] Optionally, as an implementable method, the arrangement direction of the first card reader and the second card reader is consistent with the length direction of the trolley.
[0012] Alternatively, as an implementable method, the sidewalls of the mounting pad are sloped, the slope extending from the laying surface to the top surface of the mounting pad.
[0013] Optionally, as an implementable approach, the trolley positioning area includes multiple trolley positioning areas, which are arranged at intervals.
[0014] Optionally, as an implementable approach, each of the trolley positioning areas is provided with a quick-connect connector at the end of its power circuit, through which the power circuits of two adjacent trolley positioning areas are connected.
[0015] Alternatively, as an implementable method, the extension direction of the light group is perpendicular to the arrangement direction of the first card reader and the second card reader.
[0016] The beneficial effects of the embodiments of this application include:
[0017] The trolley sensing and positioning device provided in this application includes a magnetic card module installed on the trolley body, a control module, a positioning marker module, and a prompting module installed in the trolley positioning area. The control module is electrically connected to both the positioning marker module and the prompting module. The magnetic card module and the positioning marker module are magnetically connected. The positioning marker module detects the transmission signal from the magnetic card module and transmits it to the control module. The control module then controls the prompting module to issue a prompting signal based on the transmission signal. Through the coordinated operation of the magnetic card module, the positioning marker module, the control module, and the prompting module, it is possible to detect in real time whether the trolley is placed in the designated positioning area and inform the operator through clear prompting signals. This eliminates reliance on manual conscientiousness, effectively preventing problems such as trolleys being parked randomly and obstructing passageways. It also ensures uniform and standardized trolley placement, significantly improving the cleanliness and management standardization of the wafer foundry production site. Attached Figure Description
[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1 This is one of the structural schematic diagrams of the trolley sensing and positioning device provided in the embodiments of this application;
[0020] Figure 2 This is a second schematic diagram of the structure of the stroller sensing and positioning device provided in the embodiments of this application;
[0021] Figure 3 This is the third schematic diagram of the structure of the stroller sensing and positioning device provided in the embodiments of this application.
[0022] Icons: 100 - Trolley sensing and positioning device; magnetic card module; 110 - Control module; 120 - Positioning marker module; 121 - First card reader; 122 - Second card reader; 123 - Light group; 130 - Indication module; 140 - Power circuit; 150 - Quick connector; 160 - Magnetic card module; 161 - First magnetic card; 162 - Second magnetic card; 170 - Mounting pad. Detailed Implementation
[0023] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0024] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.
[0025] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0026] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0027] Please refer to Figure 1 , Figure 2 and Figure 3 This embodiment provides a stroller sensing and positioning device 100, including a magnetic card module 160 disposed on the stroller body, a control module 110 disposed in the stroller positioning area, a positioning mark module 120 and a prompt module 130. The control module 110 is electrically connected to the positioning mark module 120 and the prompt module 130 respectively. The magnetic card module 160 and the positioning mark module 120 are magnetically connected. The positioning mark module 120 detects the transmission signal of the magnetic card module 160 and transmits it to the control module 110. The control module 110 controls the prompt module 130 to issue a prompt signal according to the transmission signal.
[0028] Specifically, when the operator pushes the cart towards the positioning area, as the cart approaches, the magnetic card module 160 enters the detection range of the positioning marker module 120. The Hall effect magnetic induction sensor in the positioning marker module 120 detects the magnetic field signal generated by the magnetic card module 160 and converts it into a weak electrical signal. This electrical signal is transmitted to the signal processing unit of the control module 110. The signal processing unit first filters out high-frequency interference in the electrical signal through an RC filter circuit, and then amplifies the electrical signal through an operational amplifier. The amplified electrical signal is then transmitted to the controller. The controller judges the received electrical signal. If the strength and duration of the electrical signal meet the preset valid signal standard, the controller determines that the cart has been placed in the correct positioning area. At this time, the controller outputs a control signal, and the prompting module 130 issues a prompt signal to remind the operator to place the cart correctly. If the operator does not push the cart to the correct positioning area, the positioning marker module 120 cannot detect the magnetic field signal of the magnetic card module 160, or the detected electrical signal does not meet the valid signal standard, and the prompting module 130 does not issue a prompt signal.
[0029] The stroller sensing and positioning device 100 provided in this application includes a magnetic card module 160 disposed on the stroller body, a control module 110 disposed in the stroller positioning area, a positioning mark module 120 and a prompt module 130. The control module 110 is electrically connected to the positioning mark module 120 and the prompt module 130 respectively. The magnetic card module 160 and the positioning mark module 120 are magnetically connected. The positioning mark module 120 detects the transmission signal of the magnetic card module 160 and transmits it to the control module 110. The control module 110 controls the prompt module 130 to issue a prompt signal according to the transmission signal. Through the coordinated operation of the magnetic card module 160, the positioning marker module 120, the control module 110, and the prompting module 130, it is possible to detect in real time whether the trolley is placed in the designated positioning area and inform the operator through clear prompting signals. This eliminates the reliance on human initiative and effectively avoids problems such as trolleys being parked randomly and occupying passageways. It also ensures that the placement of trolleys has uniform specifications and standards, significantly improving the cleanliness and management standardization of the wafer foundry production site.
[0030] In one possible embodiment of this application, such as Figure 1 , Figure 2 and Figure 3 As shown, the trolley positioning area is provided with an energized circuit 140. The positioning identification module 120 includes a first card reader 121 and a second card reader 122 connected to the energized circuit 140. The first card reader 121 and the second card reader 122 are connected in series in the energized circuit 140. The magnetic card module 160 includes a first magnetic card 161 that matches the first card reader 121 and a second magnetic card 162 that matches the second card reader 122.
[0031] Specifically, the positioning identification module 120 is no longer a single magnetic induction sensor, but consists of a first card reader 121 and a second card reader 122 connected in series on the power-on circuit 140. The models of the first card reader 121 and the second card reader 122 can be selected according to actual detection requirements. Both have magnetic card recognition functions and can only recognize specific magnetic cards that match them. Correspondingly, the magnetic card module 160 is also divided into a first magnetic card 161 adapted to the first card reader 121 and a second magnetic card 162 adapted to the second card reader 122. The two magnetic cards are installed at different positions on the trolley body by fixing components. Under normal circumstances, the first magnetic card 161 is installed under the head of the trolley, and the second magnetic card 162 is installed under the tail of the trolley. The installation distance between the two magnetic cards is consistent with the installation distance between the first card reader 121 and the second card reader 122 on the power-on circuit 140, ensuring that when the trolley is fully inside the positioning area, the two magnetic cards can be accurately aligned with their respective card readers.
[0032] When the cart enters the positioning area, the energized circuit 140 can only form a complete circuit when the first magnetic card 161 is aligned with and recognized by the first card reader 121, and simultaneously the second magnetic card 162 is aligned with and recognized by the second card reader 122. If only one magnetic card is aligned with its corresponding card reader, or if neither magnetic card is aligned, the energized circuit 140 is in an open circuit state. This series design of dual card readers and dual magnetic cards forms a "dual verification" mechanism, which significantly improves the accuracy of cart positioning compared to the detection method of a single sensor.
[0033] In one possible embodiment of this application, such as Figure 1 , Figure 2 and Figure 3 As shown, the prompt module 130 includes a buzzer device connected to the power-on circuit 140, and the buzzer device is connected to the power-on circuit 140.
[0034] Specifically, when the operator pushes the cart towards the positioning area, as the cart approaches, the magnetic card module 160 enters the detection range of the positioning marker module 120. The Hall effect magnetic induction sensor in the positioning marker module 120 detects the magnetic field signal generated by the magnetic card module 160 and converts it into a weak electrical signal. This electrical signal is transmitted to the signal processing unit of the control module 110. The signal processing unit first filters out high-frequency interference in the electrical signal through an RC filter circuit, and then amplifies the electrical signal through an operational amplifier. The amplified electrical signal is then transmitted to the controller. The controller judges the received electrical signal. If the strength and duration of the electrical signal meet the preset valid signal standard, the controller determines that the cart has been placed in the correct positioning area. At this time, the controller outputs a control signal to control the buzzer to emit a prompt signal, reminding the operator to place the cart correctly. If the operator does not push the cart to the correct positioning area, the positioning marker module 120 cannot detect the magnetic field signal of the magnetic card module 160, or the detected electrical signal does not meet the valid signal standard, and the buzzer does not emit a prompt signal. It should be noted that the buzzer lasts for 1-2 seconds.
[0035] In one possible embodiment of this application, such as Figure 1 , Figure 2 and Figure 3 As shown, the trolley positioning area is covered with a mounting pad 170. The mounting pad 170 has a wire groove for placing the wire harness and multiple mounting slots connected to the wire groove. The first card reader 121 and the second card reader 122 are installed through the mounting slots respectively.
[0036] Specifically, the mounting pad 170 is made of elastic, wear-resistant rubber or polyurethane material, which has good anti-slip and shock-absorbing properties. Its size matches the area of the trolley positioning area and can be tightly attached to the ground by means of adhesive or bolt fixing to prevent displacement. The mounting pad 170 has pre-cut wire grooves and multiple mounting slots: the depth and width are designed according to the diameter of the wire harness of the power supply circuit 140, which is used to accommodate the wire harness connecting the first card reader 121, the second card reader 122 and the external power supply, to prevent the wire harness from being exposed on the ground and being stepped on or crushed, while keeping the positioning area clean. The number of mounting slots is consistent with the number of card readers in the positioning mark module 120 (i.e., at least two). The size and depth of the mounting slots are precisely matched with the outer dimensions of the first card reader 121 and the second card reader 122, and the bottom of the mounting slots is connected to the wire groove, so that the pins or terminals of the card reader can be connected to the power supply circuit 140 through the wire harness in the wire groove.
[0037] During installation, the wiring harness is first laid in the cable tray, and then the first card reader 121 and the second card reader 122 are respectively embedded into their corresponding mounting slots, ensuring that the sensing surface of the card reader is flush with the top surface of the mounting pad 170. This ensures that the card reader can accurately recognize the magnetic card signal while preventing the card reader from protruding from the ground and causing people to trip or the cart to collide. In addition, the surface of the mounting pad 170 can be provided with an anti-slip texture to further improve the stability of the cart when parked and prevent the cart from sliding due to the smooth ground.
[0038] In one possible embodiment of this application, such as Figure 1 , Figure 2 and Figure 3 As shown, the positioning identification module 120 also includes a light group 123 connected to the power circuit 140, and the light group 123 is connected in series with the first card reader 121 and the second card reader 122.
[0039] Specifically, the light group 123 is composed of multiple LED beads, the color of which can be green. The beads are arranged in strips or dots, and their length matches the length or width of the positioning area, ensuring that the operator can observe the status of the light group 123 from multiple angles.
[0040] The operating status of the light group 123 is entirely controlled by the on / off state of the power circuit 140: when the trolley is placed correctly, the first and second card readers 122 match the corresponding magnetic cards, and the power circuit 140 is activated, current flows through the light group 123, and the LED beads light up, forming a clear "area indicator light" that visually indicates the range of the trolley's positioning area and simultaneously reminds the operator of correct placement; when the trolley is not placed correctly, the circuit is broken, and the light group 123 turns off, prompting the operator to adjust the trolley's position. Furthermore, the brightness of the light group 123 can be adjusted by a series current-limiting resistor, ensuring clear visibility in both strong and weak light environments in the workshop. The LED beads also feature low power consumption and long lifespan, reducing long-term operating costs.
[0041] In one possible embodiment of this application, such as Figure 1 , Figure 2 and Figure 3 As shown, the first card reader 121 and the second card reader 122 are arranged in the same direction as the length of the cart.
[0042] By matching the card reader with the magnetic card's orientation, positioning can only be completed when the trolley is placed along its length, avoiding problems such as excessive space occupation and insufficient spacing between adjacent trolleys caused by placing the trolley horizontally, thus optimizing the efficiency of workshop space utilization.
[0043] In one possible embodiment of this application, such as Figure 1 , Figure 2 and Figure 3 As shown, the sidewall of the mounting pad 170 is a slope, which extends from the laying surface to the top surface of the mounting pad 170.
[0044] Specifically, the top surface of the mounting pad 170 is flat, flush with or slightly higher than the workshop floor. The slope creates a smooth transition at the edge of the mounting pad 170: when the cart wheels move from the ground to the top surface of the mounting pad 170, the wheels can smoothly transition along the slope, avoiding wheel jamming and bumping caused by the right-angle step between the mounting pad 170 and the ground; at the same time, when people walk, their feet can also pass smoothly along the slope, preventing them from tripping over the edge of the mounting pad 170.
[0045] In one possible embodiment of this application, such as Figure 1 , Figure 2 and Figure 3 As shown, the stroller positioning area includes multiple areas, which are arranged at intervals.
[0046] Furthermore, each trolley positioning area's power circuit 140 is equipped with a quick-connect connector 150 at its end, through which the power circuits 140 of two adjacent trolley positioning areas are connected.
[0047] Specifically, when it is necessary to connect the power circuits 140 of two adjacent positioning areas, simply connect the male connector at the end of the circuit in the previous positioning area to the female connector at the end of the circuit in the next positioning area to achieve rapid circuit connection. If it is necessary to split the circuit (e.g., if a positioning area needs to be maintained separately), simply separate the male and female connectors to achieve rapid circuit disconnection. In addition, the quick-connect connector 150 is equipped with a sealing ring at the connection point, which has waterproof and dustproof functions, preventing oil and water stains in the workshop from entering the connector and causing short circuits. At the same time, a protective shell is installed on the outside of the connector to prevent damage to the connector due to collisions or being stepped on.
[0048] In one possible embodiment of this application, such as Figure 1 , Figure 2 and Figure 3 As shown, the extension direction of the lamp group 123 is perpendicular to the arrangement direction of the first card reader 121 and the second card reader 122.
[0049] Specifically, the extension direction of the light assembly 123 is perpendicular to the length direction of the trolley (i.e., the width direction of the trolley). This means the light assembly 123 extends along the width of the trolley's positioning area, avoiding the path of the trolley's wheels (when the trolley is parked longitudinally, the wheels roll longitudinally and will not run over the transverse light assembly 123). Simultaneously, the light assembly 123 is installed at the edge of the positioning area, reducing the probability of it being stepped on. Compared to the longitudinally extending light assembly 123 (which is easily run over by wheels), the transversely extending light assembly 123 has a lower probability of failure due to physical damage.
[0050] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A stroller sensing and positioning device, characterized in that, The device includes a magnetic card module mounted on the trolley body, a control module, a positioning marker module, and a prompting module mounted in the trolley positioning area. The control module is electrically connected to the positioning marker module and the prompting module, respectively. The magnetic card module and the positioning marker module are magnetically connected. The positioning marker module detects the transmission signal from the magnetic card module and transmits it to the control module. The control module controls the prompting module to issue a prompting signal based on the transmission signal.
2. The trolley sensing and positioning device according to claim 1, characterized in that, The trolley positioning area is provided with an electrical circuit. The positioning identification module includes a first card reader and a second card reader connected to the electrical circuit. The first card reader and the second card reader are connected in series in the electrical circuit. The magnetic card module includes a first magnetic card that matches the first card reader and a second magnetic card that matches the second card reader.
3. The trolley sensing and positioning device according to claim 2, characterized in that, The notification module includes a buzzer device connected to the power-on circuit, and the buzzer device is in communication with the power-on circuit.
4. The trolley sensing and positioning device according to claim 3, characterized in that, The trolley positioning area is covered with an installation pad, and the installation pad has a wire groove for placing the wire harness and a plurality of installation slots communicating with the wire groove. The first card reader and the second card reader are respectively installed through the installation slots.
5. The trolley sensing and positioning device according to claim 2, characterized in that, The positioning identification module also includes a light group connected to the power circuit, and the light group is connected in series with the first card reader and the second card reader.
6. The trolley sensing and positioning device according to claim 2, characterized in that, The arrangement direction of the first card reader and the second card reader is consistent with the length direction of the trolley.
7. The trolley sensing and positioning device according to claim 4, characterized in that, The sidewalls of the mounting pad are sloped, and the sloped surface extends from the laying surface to the top surface of the mounting pad.
8. The trolley sensing and positioning device according to claim 2, characterized in that, The trolley positioning area includes multiple areas, which are arranged at intervals.
9. The trolley sensing and positioning device according to claim 8, characterized in that, Each of the trolley positioning areas is equipped with a quick-connect connector at the end of its power circuit. The power circuits of two adjacent trolley positioning areas are connected through the quick-connect connector.
10. The trolley sensing and positioning device according to claim 5, characterized in that, The extension direction of the light group is perpendicular to the arrangement direction of the first card reader and the second card reader.