A quick detection device for dry reed tube sensitivity

Abstract

The utility model discloses a kind of quick detection device of dry Reed sensitivity, it is related to dry Reed detection technical field, including power supply, the detection mechanism electrically connected with power supply, the display mechanism electrically connected with detection mechanism, the control mechanism electrically connected with power supply, control mechanism and detection mechanism electrically connected, display mechanism is used to show detection result, control mechanism is used to adjust detection process, detection mechanism includes the metal strip one electrically connected with power supply, the metal strip two connected with display mechanism, the magnetic field generator for generating magnetic field, metal strip one and metal strip two are connected with the two ends of dry Reed respectively, display mechanism and power supply electrically connected.The utility model provides the quick detection device of dry Reed sensitivity, the sensitivity of dry Reed can be detected quickly, and detection result is more accurate, to improve the accuracy of detection.

Description

Technical Field

[0001] This utility model relates to the field of reed switch testing technology, specifically to a rapid testing device for reed switch sensitivity. Background Technology

[0002] A reed switch, also known as a magnetic reed switch, is an electrical switch operated by an applied magnetic field. The basic design consists of two magnetic reeds sealed inside a glass tube, with a small gap between them. When an external magnetic field is applied, such as when a magnet approaches the reed switch, the two reeds inside the reed switch make contact, thus turning on the circuit. Once the magnet moves away from the switch, the two reeds return to their original positions.

[0003] To ensure the proper functioning of a reed switch, its sensitivity (AT value) typically needs to be tested. Existing testing methods usually involve placing a magnet, connecting a power supply, two copper strips, and a light bulb in series in the same circuit, and then placing the two ends of the reed switch on the two copper strips. Pushing the reed switch towards the magnet, when the reed switch conducts under the magnet's influence, the circuit is completed, and the light bulb lights up. The distance between the reed switch and the magnet is then observed; a closer distance indicates lower sensitivity, and vice versa. However, this testing method is not accurate, and during prolonged and extensive testing, operator eye fatigue can easily lead to misjudgments of the distance between the reed switch and the magnet, resulting in inaccurate measurements. Therefore, to achieve more accurate measurements, a novel reed switch sensitivity testing device is needed. This invention addresses this technical problem. Utility Model Content

[0004] This invention provides a rapid detection device for reed switch sensitivity, which can quickly detect the sensitivity of the reed switch and the detection results are more accurate, thereby improving the accuracy of the detection.

[0005] A rapid detection device for reed switch sensitivity includes a power supply, a detection mechanism electrically connected to the power supply, a display mechanism electrically connected to the detection mechanism, and a control mechanism electrically connected to the power supply. The control mechanism is electrically connected to the detection mechanism, the display mechanism is used to display the detection result, and the control mechanism is used to control the switching frequency of the reed switch.

[0006] Furthermore, the detection mechanism includes a first metal strip electrically connected to the power supply, a second metal strip connected to the display mechanism, and a magnetic field generator for generating a magnetic field. The first metal strip and the second metal strip are respectively connected to the two ends of a reed switch, and the display mechanism is electrically connected to the power supply.

[0007] Furthermore, the control mechanism employs a PWM signal generator electrically connected to the power supply, and the PWM signal generator is connected to the magnetic field generator.

[0008] Furthermore, the magnetic field generator employs an electromagnetic coil, which is electrically connected to the control mechanism.

[0009] Furthermore, the power supply is electrically connected to the voltage regulation module, and the voltage regulation module is electrically connected to the PWM signal generator.

[0010] Furthermore, the display mechanism employs an oscilloscope.

[0011] Furthermore, the detection mechanism and the control mechanism are respectively connected to the outer casing.

[0012] Furthermore, the end of the electromagnetic coil is connected to the bracket, the bracket has a first connection hole, and the outer shell has a second connection hole. The first connection hole and the second connection hole are respectively connected to bolts.

[0013] One or more technical solutions proposed in this application have at least the following technical effects:

[0014] (1) This solution supplies power to the detection mechanism, display mechanism and control mechanism. When it is necessary to test the sensitivity of the reed switch, the reed switch can be placed on the detection mechanism. The control mechanism will control the switching frequency of the reed switch, and the display mechanism will display the test results according to the switching frequency of the reed switch, so that the test results can be more accurate.

[0015] (2) The detection mechanism in this scheme includes metal strip one, metal strip two and electromagnetic coil. When testing is required, the two ends of the reed switch can be placed on metal strip one and metal strip two respectively. Under the action of the magnetic field of the electromagnetic coil, the reed switch will conduct. At this time, the waveform displayed on the oscilloscope can be observed, and the sensitivity of the reed switch can be judged according to the waveform. Compared with the traditional method, this scheme does not need to judge the sensitivity of the reed switch based on the distance between the reed switch and the magnet, so that the test results obtained are more accurate.

[0016] (3) In this scheme, the switching frequency and duty cycle of the electromagnetic coil can be controlled by a PWM signal generator. After the electromagnetic coil is energized, the magnetic field of the electromagnetic coil will gradually increase from small to large within a certain period of time. During this period, the reed switch with high sensitivity will turn on in advance. At this time, the waveform on the oscilloscope can be observed, and the conduction status of the reed switch can be judged according to the positive and negative proportions of the waveform, so that the detection results are more intuitive. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0018] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ;

[0019] Figure 3 This is a connection block diagram of the present invention.

[0020] Legend: 1. Outer shell; 2. Metal strip one; 3. Metal strip two; 4. Voltage regulation module; 5. PWM signal generator; 6. Electromagnetic coil; 7. Power supply; 8. Bracket; 9. Connection hole one; 10. Connection hole two. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0022] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0023] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0024] See Figures 1-3This utility model proposes a rapid detection device for reed switch sensitivity, including a power supply 7, a detection mechanism electrically connected to the power supply 7, a display mechanism electrically connected to the detection mechanism, and a control mechanism electrically connected to the power supply 7. The control mechanism is electrically connected to the detection mechanism, the display mechanism is used to display the detection results, and the control mechanism is used to control the switching frequency of the reed switch per second.

[0025] Furthermore, the detection mechanism includes a metal strip 2 electrically connected to the power supply 7, a metal strip 3 connected to the display mechanism, and a magnetic field generator for generating a magnetic field. Metal strip 2 and metal strip 3 are respectively connected to both ends of a reed switch, and the display mechanism is electrically connected to the power supply 7. In this embodiment, both metal strip 2 and metal strip 3 are made of copper, allowing the two ends of the reed switch to be placed directly on the copper strips for quick connection.

[0026] Furthermore, the control mechanism employs a PWM signal generator 5 electrically connected to the power supply 7, and the PWM signal generator 5 is connected to the magnetic field generator. The PWM signal generator 5 is used to control the on / off frequency and duty cycle of the magnetic field generator. In this embodiment, the duty cycle is 50% positive and 50% negative.

[0027] Furthermore, the magnetic field generator employs an electromagnetic coil 6, which is electrically connected to the control mechanism.

[0028] Furthermore, the power supply 7 is electrically connected to the voltage regulation module 4, and the voltage regulation module 4 is electrically connected to the PWM signal generator 5. The voltage regulation module 4 and the PWM signal generator 5 are common knowledge in the art, and their principles will not be described in detail here.

[0029] Furthermore, the display mechanism employs an oscilloscope. See also Figure 3 The diagram illustrates the connection relationships between the oscilloscope and other devices through the oscilloscope interface.

[0030] Furthermore, the detection mechanism and the control mechanism are respectively connected to the housing 1. In this embodiment, the housing 1 has through holes, facilitating the connection of wires from each device to other devices. By connecting the detection mechanism and the control mechanism to the housing, and with the circuit structure housed within the housing 1, the housing 1 provides protection for the circuit structure.

[0031] Furthermore, the end of the electromagnetic coil 6 is connected to the bracket 8. The bracket 8 has a first connection hole 9, and the outer casing has a second connection hole 10. Both the first connection hole 9 and the second connection hole 10 are connected to bolts. Thus, the electromagnetic coil 6 can be fixed to the outer casing in the above manner. To facilitate observation of the location of the first connection hole 9 and the second connection hole 10, the bolts are not shown in the figure.

[0032] The working process of this utility model is as follows:

[0033] Start the power supply 7, adjust the voltage through the voltage regulation module 4, and control the switching frequency and duty cycle of the electromagnetic coil 6 through the PWM signal generator 5. Then place the two ends of the reed switch on the metal strip 2 and the metal strip 3. Since the electromagnetic coil 6 needs a certain amount of time to gradually increase the magnetic field from small to large to the maximum after being energized, and the magnetic field strength required for different sensitivities to conduct is different, the reed switch with higher sensitivity will conduct before the magnetic field increases to the maximum.

[0034] For example, the sensitivity of the reed switch is between 8-10GS, the maximum magnetic field generated by the electromagnetic coil 6 is 10GS, and the time required to increase the magnetic field to 10GS is 10ms. After the electromagnetic coil 6 is energized, when the magnetic field rises from 0 to 8GS, the reed switch with a sensitivity of 8GS will conduct without waiting for the magnetic field to rise to 10GS.

[0035] At this time, the circuit containing power supply 7, metal strip 1 2, reed switch, metal strip 2 3, and oscilloscope is connected. The waveform displayed by the oscilloscope has a positive ratio of 80% and a negative ratio of 20%. Since the magnetic field strength required for reed switches with different sensitivities to conduct is different, the conduction time of the reed switch is different when the electromagnetic coil 6 is energized. The waveform displayed by the oscilloscope will be inconsistent. Therefore, the sensitivity of the reed switch, i.e., the AT value, can be determined based on the waveform.

[0036] After the test is completed, remove the reed switch, and then place another reed switch on metal strip 2 and metal strip 3 for testing. Since metal strip 2 and metal strip 3 are conductive, they can be quickly connected to the reed switch in the above manner.

[0037] The technical features not described in detail in this solution are based on the conventional operation and general understanding of those skilled in the art and are derived from existing technologies, and will not be elaborated further here.

[0038] The above are merely exemplary embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the technical concept of this utility model and the contents of the specification and drawings of this utility model, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A rapid detection device for reed switch sensitivity, characterized in that, It includes a power supply (7), a detection mechanism electrically connected to the power supply (7), a display mechanism electrically connected to the detection mechanism, and a control mechanism electrically connected to the power supply (7). The control mechanism is electrically connected to the detection mechanism, the display mechanism is used to display the detection results, and the control mechanism is used to control the switching frequency of the reed switch.

2. The rapid detection device for reed switch sensitivity according to claim 1, characterized in that, The detection mechanism includes a metal strip (2) electrically connected to the power supply (7), a metal strip (3) connected to the display mechanism, and a magnetic field generator for generating a magnetic field. The metal strip (2) and the metal strip (3) are respectively connected to the two ends of a reed switch, and the display mechanism is electrically connected to the power supply (7).

3. The rapid detection device for reed switch sensitivity according to claim 2, characterized in that, The control mechanism employs a PWM signal generator (5) electrically connected to the power supply (7), and the PWM signal generator (5) is connected to the magnetic field generator.

4. The rapid detection device for reed switch sensitivity according to claim 2, characterized in that, The magnetic field generator uses an electromagnetic coil (6), which is electrically connected to the control mechanism.

5. The rapid detection device for reed switch sensitivity according to claim 3, characterized in that, The power supply (7) is electrically connected to the voltage regulation module (4), and the voltage regulation module (4) is electrically connected to the PWM signal generator (5).

6. The rapid detection device for reed switch sensitivity according to claim 1, characterized in that, The display mechanism uses an oscilloscope.

7. The rapid detection device for reed switch sensitivity according to claim 4, characterized in that, The detection mechanism and the control mechanism are respectively connected to the outer casing (1).

8. The rapid detection device for reed switch sensitivity according to claim 7, characterized in that, The end of the electromagnetic coil (6) is connected to the bracket (8). The bracket (8) has a first connection hole (9) and the outer shell has a second connection hole (10). The first connection hole (9) and the second connection hole (10) are respectively connected to bolts.

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