Electronic ruler

Abstract

The utility model discloses an electronic ruler, which comprises a measuring tape shell, a rotating recovery measuring tape is arranged in the measuring tape shell, a ruler strip is wound on the rotating recovery measuring tape, a code channel induction piece used for identification is arranged on the ruler strip, an outlet is arranged on one side of the measuring tape shell, and a code channel is arranged on the outlet. The outlet is provided with an identification reader used for identifying the induction piece, and the ruler strip stretches out and draws back from the outlet through the identification reader. The identification reader is connected with a display screen used for displaying numbers. According to the utility model, the identification sensing member on the rotation recovery measuring tape is arranged, the movement distance of the rack is obtained through the identification reader, then data are read, the movement distance is obtained, measurement can be recorded for multiple times, output is anti-interference, in addition, the structure is simple, the distance dimension can be rapidly obtained, the reading is convenient through digital display, and the use is wide.

Description

Technical Field

[0001] This utility model relates to the field of length measurement sensor technology, and in particular to an electronic ruler. Background Technology

[0002] The measuring device is mainly tested by mechanical structure, which requires manual labeling and data collection, and the process is time-consuming. Now, for some large-scale measurements, electronic rulers are used, which can directly collect data after measurement. The electronic ruler is actually a sliding rheostat, which is used as a voltage divider to display the actual position of the measured position by relative voltage. This device has a complex structure and high cost, and is not suitable for widespread use. Utility Model Content

[0003] In view of the above-mentioned defects or deficiencies, the purpose of this utility model is to provide an electronic ruler.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows:

[0005] An electronic ruler includes: a measuring tape housing, a rotating and restoring measuring tape installed inside the measuring tape housing, a ruler strip wound around the rotating and restoring measuring tape, a code track sensor for identification on the ruler strip, an outlet on one side of the measuring tape housing, an identification reader for identifying the sensor at the outlet, the ruler strip extending and retracting from the outlet through the identification reader; and a display screen for displaying numbers connected to the identification reader.

[0006] The rotating and restoring measuring tape includes a coil spring, and the measuring strip is wound around the coil spring.

[0007] The rotating and restoring measuring tape is provided with an output identification rotating and restoring mechanism and a retrieval identification rotating and restoring mechanism on both sides. The output identification rotating and restoring mechanism and the retrieval identification rotating and restoring mechanism are connected by an identification pull rope. The identification pull rope passes around the first synchronous pulley and the second synchronous pulley. An identification sensor is provided on the identification pull rope. The identification reader is located at the identification pull rope. The measuring tape extends out of the outlet through the first synchronous pulley.

[0008] The identification sensor is a magnetic tape made of hard magnetic material, and the identification reader is a Hall effect sensor for counting.

[0009] The identification sensor is a light-shielding component, and the identification reader is an infrared photoelectric pair tube for counting.

[0010] The reader is equipped with an external interface.

[0011] The outlet is equipped with a surface brush for cleaning the ruler strips.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This invention provides an electronic ruler that uses a sensor on a rotating and recovering measuring tape to detect the movement distance of the rack and reads the data. This allows for multiple recordings and outputs with anti-interference capabilities. Furthermore, this invention has a simple structure, can quickly obtain distance dimensions, and provides a convenient digital display for easy reading, making it widely applicable. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the electronic ruler structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the coil spring structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the structure of an embodiment of the electronic ruler of this utility model;

[0017] Figure 4 This is a schematic diagram of the ruler structure of this utility model;

[0018] Figure 5 This is a schematic diagram of the first synchronous pulley structure of this utility model;

[0019] Figure 6 This is a schematic diagram of the actuating shaft structure of this utility model.

[0020] In the diagram, 1—measuring strip; 2—code track sensor; 3—reader; 4—recognition pull cord; 5—rotation recovery measuring tape; 6—external interface; 7—display screen; 8—measuring tape housing; 9—; 10—switch; 51—coil spring; 52—first synchronous pulley; 53—output recognition rotation recovery mechanism; 54—recovery recognition rotation recovery mechanism; 55—second synchronous pulley; 56—toggle shaft; 57—toggle baffle; 81—outlet; 82—brush. Detailed Implementation

[0021] The present invention will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the protection scope of the present invention.

[0022] like Figure 1As shown, this utility model provides an electronic ruler, including: a measuring tape housing 8, a rotating and restoring measuring tape 5 installed inside the measuring tape housing 8, a ruler strip 1 wound around the rotating and restoring measuring tape 5, a code track sensor 2 for identification on the ruler strip 1, an outlet 81 provided on one side of the measuring tape housing 8, an identification reader 3 for identifying the sensor 2 provided at the outlet 81, and the ruler strip 1 extending and retracting from the outlet 81 through the identification reader 3; a display screen 7 for displaying numbers is connected to the identification reader 3.

[0023] Preferably, in this invention, the reader 3 is connected to a counter 9, which is connected to the display screen 7 and can output the read numbers. It can also be initialized to 0 by a reset button to start counting.

[0024] Specifically, such as Figure 2 As shown, the rotating and restoring measuring tape 5 includes a coil spring 51, and the measuring strip 1 is wound around the coil spring 51. Preferably, as shown... Figure 3 As shown, the rotating recovery measuring tape 5 further includes: an output identification rotating recovery mechanism 53 and a retraction identification rotating recovery mechanism 54 are provided on both sides of the rotating recovery measuring tape 5. The output identification rotating recovery mechanism 53 and the retraction identification rotating recovery mechanism 54 are connected by an identification pull rope 4. The identification pull rope 4 passes around the first synchronous pulley 52 and the second synchronous pulley 55. An identification sensor 2 is provided on the identification pull rope 4. The identification reader 3 is located at the identification pull rope 4. The ruler strip 1 passes through the first synchronous pulley 52 and extends out of the outlet 81.

[0025] The structural principle of the pull-string absolute code displacement sensor is as follows: When the ruler 1 is pulled, the first synchronous wheel 52 drives the identification pull-string 4 to rotate. Simultaneously, the second synchronous wheel 55 drives the retraction and recovery mechanism 54 to retract the identification pull-string 4. The displacement of the identification pull-string 4 is the same as that of the ruler 1. When measuring length, the identification pull-string 4 is pulled out or retracted, and the data on the identification pull-string 4 is output, recorded by a counter, and then displayed. Preferably, in this utility model, as... Figure 4 , 5 As shown, a toggle shaft 56 is provided on one side of the first synchronous pulley 52, and a toggle baffle 57 is installed on the toggle shaft 56. A switch 10 connected to the toggle baffle 57 is provided on the tape measure housing 8. The switch 10 is connected to the identification reader 3. When the rack 1 of the tape measure rotates in the forward direction, the switch 10 is turned on to start counting. When it is retracted in the reverse direction, the switch is turned off to stop counting. In this structure, the measuring part is not disturbed by dirt because it is in a closed space.

[0026] In practice, it should be noted that the reader 3 is equipped with an external interface 6, which enables data export.

[0027] In this utility model, such as Figure 6 As shown, the identification sensor 2 can be configured with various structures as needed. For example, it can be configured through physical means. Exemplary physical properties include any one of the following: light-transmitting / opaque, reflective / non-reflective, conductive / non-conductive, protruding / recessed, strong / weak magnetic, and S pole / N pole of a magnet. It should be noted that the physical properties in this invention are not limited to the above features; other corresponding readable information methods are also possible. Correspondingly, the identification reader 3 can be any one of the following: photoelectric sensor, electrical sensor, magnetic sensor, electromagnetic induction sensor, and stress sensor, corresponding to the physical properties.

[0028] For example, when the identification sensor 2 is a magnetic tape made of hard magnetic material, the identification reader 3 uses a Hall effect sensor for counting. Alternatively, when the identification sensor 2 is a light-shielding component, the identification reader 3 uses an infrared photodiode for counting.

[0029] Preferably, the measuring tape housing 8 of this utility model includes a cleaning mechanism. For example, a brush 82 is provided at the outlet 81 to clean the surface of the measuring tape 1, so as to avoid contamination affecting the speed and accuracy of recognition.

[0030] The rotating and restoring measuring tape 5 in this invention mainly provides resistance when the tape strip 1 is pulled out and power when it is retrieved. The tape strip 1 and the rotating and restoring measuring tape 5 in this invention can use existing measuring tape materials and spring structures, or the material of the tape strip 1 can be changed to better suit the two different physical properties of the identification sensor 2, or to better suit the deformation requirements of the tape strip 1. The rotating and restoring mechanism 5 can also be electric or a more intelligent retrieval mechanism. Power can be generated by pulling out or retrieving the tape strip 1, which is then supplied to the display screen 7 for display and to the identification reader 3 for counting. The external interface 6 of this invention can be a parallel output port, a serial output port, a wireless communication module, etc.

[0031] It will be apparent to those skilled in the art that the above specific examples are merely preferred embodiments of this utility model. Therefore, any improvements or modifications that those skilled in the art may make to certain parts of this utility model still embody the principles of this utility model and achieve its purpose, and all fall within the scope of protection of this utility model.

Claims

1. An electronic ruler, characterized in that, include: A measuring tape housing (8) is provided, inside which a rotating and restoring measuring tape (5) is installed. A measuring strip (1) is wound around the rotating and restoring measuring tape (5). A code track sensor (2) for identification is provided on the measuring strip (1). An outlet (81) is provided on one side of the measuring tape housing (8). An identification reader (3) for identifying the sensor (2) is provided at the outlet (81). The measuring strip (1) extends and retracts from the outlet (81) through the identification reader (3). A display screen (7) for displaying numbers is connected to the identification reader (3).

2. The electronic ruler according to claim 1, characterized in that, The rotating and restoring measuring tape (5) includes a coil spring (51), and the measuring strip (1) is wound around the coil spring (51).

3. The electronic ruler according to claim 2, characterized in that, The rotating and restoring measuring tape (5) is provided with an output identification rotating and restoring mechanism (53) and a recycling identification rotating and restoring mechanism (54) on both sides. The output identification rotating and restoring mechanism (53) and the recycling identification rotating and restoring mechanism (54) are connected by an identification pull rope (4). The identification pull rope (4) passes around the first synchronous pulley (52) and the second synchronous pulley (55). An identification sensor (2) is provided on the identification pull rope (4). The identification reader (3) is located at the identification pull rope (4). The ruler strip (1) passes through the first synchronous pulley (52) and extends out of the outlet (81).

4. The electronic ruler according to claim 3, characterized in that, The identification sensor (2) is a magnetic tape made of hard magnetic material, and the identification reader (3) is a Hall effect sensor for counting.

5. The electronic ruler according to claim 3, characterized in that, The identification sensor (2) is a light-shielding component, and the identification reader (3) is an infrared photoelectric pair tube for counting.

6. The electronic ruler according to claim 1, characterized in that, The identification reader (3) is provided with an external interface (6).

7. The electronic ruler according to claim 1, characterized in that, A surface brush (82) for cleaning the ruler strip (1) is provided at the outlet (81).

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