Test box of rotating speed coil sensor

Abstract

The utility model provides a test box for a rotating speed coil sensor. The test box comprises a box body, an operation panel, a change-over switch, an oscilloscope positive and negative electrode butt joint socket, a millivoltmeter positive and negative electrode butt joint socket and two groups of sensor positive and negative electrode butt joint sockets, the box body comprises a box cover and a box main body, and an operation panel is supported on the box main body; the operation panel is provided with a change-over switch and each butt joint socket, and the back surface of the operation panel is provided with a connecting line of the butt joint sockets and the change-over switch; a positive butt joint socket and a negative butt joint socket in the oscilloscope positive and negative butt joint socket and the millivoltmeter positive and negative butt joint socket are respectively in short circuit, and are connected to corresponding contacts of the change-over switch together with the two groups of sensor positive and negative butt joint sockets; and the oscilloscope and the millivoltmeter are electrically connected with the two groups of sensor positive and negative electrode butt joint sockets in sequence through electric connection conversion of the change-over switch. The test box of the rotating speed coil sensor solves the problems of unstable measurement results, connection errors and low working efficiency.

Description

Technical Field

[0001] The utility model belongs to the technical field of speed coil sensor testing, in particular to a test box for a speed coil sensor. Background Art

[0002] Before assembling a rocket engine, it is necessary to conduct an online simulation test of the rotor speed and detect the stability of the waveform and voltage value output by the speed coil sensor to determine whether the speed coil sensor is qualified.

[0003] The existing speed coil sensor testing process uses two sets of speed coil sensors to test the rotor. This testing method is primarily used for re-inspection. Using only one set of speed coil sensors makes it impossible to verify the authenticity of the test data. For example, loss of speed coil sensor accuracy or poor contact with the test leads can affect the test results. Using two sets of speed coil sensors, if the test results are identical, it can be determined to be authentic.

[0004] The current connection method for the speed coil sensor test process is: first, short-circuit the positive and negative poles of a set of speed coil sensors with the positive and negative poles of the oscilloscope and millivoltmeter with clips. After the test is completed, use the same method to connect another set of speed coil sensors.

[0005] The following problems occurred during the test:

[0006] 1. Using a clip to short-circuit the wires together can easily lead to poor contact and unstable measurement results.

[0007] 2. There are many connecting wires, especially when two sets of speed coil sensors are used alternately, it is easy to connect them incorrectly, which may cause damage to the instrument and product;

[0008] 3. There are too many connecting wires and the wiring is complicated, resulting in low work efficiency, especially when the two sets of speed coil sensors are used alternately. Utility Model Content

[0009] In order to overcome the deficiencies in the prior art, the inventors have conducted intensive research and provided a test box for a speed coil sensor to solve the problems of unstable measurement results, connection errors, and low working efficiency.

[0010] The technical solutions provided by this utility model are as follows:

[0011] A test box for a speed coil sensor, comprising a box body, an operation panel, a changeover switch, an oscilloscope positive and negative electrode docking socket, a millivoltmeter positive and negative electrode docking socket, and two sets of sensor positive and negative electrode docking sockets;

[0012] The box body provides the outer shell structure for the entire test box, including the box cover and the box body, which supports the operation panel;

[0013] The operation panel is equipped with a transfer switch, oscilloscope positive and negative docking sockets, millivoltmeter positive and negative docking sockets and sensor positive and negative docking sockets. The connection lines of the docking sockets and the transfer switch are arranged on the back of the operation panel.

[0014] Connect the positive and negative pole docking sockets of the oscilloscope, the positive and negative pole docking sockets of the millivoltmeter and the positive and negative pole docking sockets of the sensor to the lead plugs of the oscilloscope, millivoltmeter and speed coil sensor, and connect the oscilloscope, millivoltmeter and speed coil sensor to the test box;

[0015] The positive and negative docking sockets of the oscilloscope and the millivoltmeter are short-circuited respectively, and connected to the corresponding contacts of the conversion switch together with the positive and negative docking sockets of the two sets of sensors. The oscilloscope and the millivoltmeter are electrically connected to the positive and negative docking sockets of the two sets of sensors in turn through the electrical connection conversion of the conversion switch.

[0016] Furthermore, the positive and negative pole docking sockets of the oscilloscope, the positive and negative pole docking sockets of the millivoltmeter, and the positive and negative pole docking sockets of the two sets of sensor positive and negative pole docking sockets are docking sockets of two colors.

[0017] Furthermore, the operation panel is provided with positive and negative pole markings of an oscilloscope positive and negative pole docking socket, a millivoltmeter positive and negative pole docking socket, and two sets of sensor positive and negative pole docking sockets.

[0018] Furthermore, the operation panel has a switch conversion mark and path marks corresponding to different conversion directions.

[0019] Furthermore, a grounding wire docking socket is also installed on the operation panel, which is electrically connected to the oscilloscope negative pole docking socket and the millivoltmeter negative pole docking socket. After the grounding wire plug is connected, it is grounded to the external speed simulation device.

[0020] Furthermore, the transfer switch is a double-pole double-throw rocker switch.

[0021] Furthermore, the box cover and the box body are rotatably connected by a hinge, and a male lock and a female lock are respectively installed on the box cover and the box body, and the two form a male and female lock buckle to fix the box cover and the box body.

[0022] Furthermore, the box cover is processed with a cavity to accommodate the protruding structural parts in the box body.

[0023] The test box for a speed coil sensor provided by the utility model has the following beneficial effects:

[0024] (1) The utility model provides a test box for a speed coil sensor, which is provided with an oscilloscope positive and negative electrode docking socket, a millivoltmeter positive and negative electrode docking socket, and two sets of sensor positive and negative electrode docking sockets, so that the wiring is firm and reliable, effectively avoiding the problem of poor contact;

[0025] (2) The utility model provides a test box for a speed coil sensor. By installing the positive and negative docking sockets of an oscilloscope, the positive and negative docking sockets of a millivoltmeter, and two sets of positive and negative docking sockets of sensors on an operation panel, the wires are plugged in centrally, and the plugging positions are distinguished by markings and colors, making the plugging simple and clear, and effectively avoiding plugging errors and damage to equipment and products;

[0026] (3) The utility model provides a test box for a speed coil sensor, in which the positive and negative pole docking sockets of the oscilloscope and the positive and negative pole docking sockets of the millivoltmeter are short-circuited respectively, and are connected to the corresponding contacts of the conversion switch with the two sets of sensor positive and negative pole docking sockets. The oscilloscope and the millivoltmeter are electrically connected to the two sets of sensor positive and negative pole docking sockets in turn through the electrical connection conversion of the conversion switch; the test box has a sensor conversion function, which can plug in all the wires at one time, and switch the two sets of speed coil sensors through the switch, thereby greatly improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of a test box for a speed coil sensor;

[0028] Figure 2 is a schematic diagram of the operation panel;

[0029] Figure 3 This is a connection diagram for the speed coil sensor test circuit. DETAILED DESCRIPTION

[0030] The following is a detailed description of the present invention, and the features and advantages of the present invention will become clearer and more distinct with the description.

[0031] The word “exemplary” is used exclusively herein to mean “serving as an example, example, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0032] The utility model provides a test box for a speed coil sensor, such as Figures 1 to 3 As shown, it includes: a box body 1, an operation panel 2, a conversion switch 3, an oscilloscope positive and negative terminal docking socket 4, a millivoltmeter positive and negative terminal docking socket 5 and two sets of sensor positive and negative terminal docking sockets 6;

[0033] The box body 1 provides the outer shell structure for the entire test box, including the box cover and the box body. The box body supports the operation panel 2. The box cover closes the box body during the non-testing phase to protect the components inside the box body.

[0034] The operation panel 2 is equipped with a change-over switch 3, an oscilloscope positive and negative terminal docking socket 4, a millivoltmeter positive and negative terminal docking socket 5, and a sensor positive and negative terminal docking socket 6. The connection lines of the docking sockets and the change-over switch are arranged on the back of the operation panel 2;

[0035] Two sets of sensor positive and negative pole docking sockets (1-3 docking socket and 2-4 docking socket) are installed on the operation panel 2. Two sets of speed coil sensors can be plugged in at one time. The two sets of speed coil sensors can be switched by the conversion switch, which greatly improves the working efficiency. At this time, the conversion switch should be a double-pole double-throw switch, such as a double-pole double-throw rocker switch;

[0036] In the connection circuit on the back of the operation panel 2, the positive and negative docking sockets of the oscilloscope positive and negative docking sockets 4 and the millivoltmeter positive and negative docking sockets 5 are short-circuited respectively, and connected to the corresponding contacts of the conversion switch with the positive and negative docking sockets of the two groups of sensors. The oscilloscope and the millivoltmeter are electrically connected to the positive and negative docking sockets of the two groups of sensors in turn through the electrical connection conversion of the conversion switch.

[0037] When the transfer switch is a double-pole, double-throw rocker switch, the positive and negative terminals of the oscilloscope and millivoltmeter are short-circuited and electrically connected to the two moving contacts of the transfer switch. The positive and negative terminals of the two sets of sensors are electrically connected to the static contacts of the two channels of the transfer switch. When testing a dual-speed coil sensor or a single-speed coil sensor, insert the corresponding plug into the terminal socket and, through the transfer switch, connect the oscilloscope and millivoltmeter to the two speed coils of the dual-speed coil sensor, or to the single speed coil of the single-speed coil sensor, respectively, to conduct the test.

[0038] In a preferred embodiment, the oscilloscope positive and negative electrode docking socket 4, the millivoltmeter positive and negative electrode docking socket 5 and the positive electrode docking socket and the negative electrode docking socket in the two sets of sensor positive and negative electrode docking sockets are docking sockets of two colors.

[0039] In a preferred embodiment, the operation panel 2 has positive and negative pole markings for an oscilloscope positive and negative pole docking socket 4, a millivoltmeter positive and negative pole docking socket 5, and two sets of sensor positive and negative pole docking sockets.

[0040] In a preferred embodiment, the operating panel 2 has a switch conversion mark (such as gear I / gear II) and a path mark corresponding to different conversion directions (the gear I side is connected to the sensor on the 1-3 docking socket, and the gear II side is connected to the sensor on the 2-4 docking socket).

[0041] In a preferred embodiment, a grounding wire docking socket 7 is also installed on the operation panel 2. The grounding wire docking socket 7 is electrically connected to the oscilloscope negative pole docking socket 4 and the millivoltmeter negative pole docking socket 5. After the grounding wire plug is connected, it is grounded to the external speed simulation device.

[0042] In a preferred embodiment, the box cover and the box body are rotatably connected by a hinge, and a male lock and a female lock are respectively installed on the box cover and the box body, and the two form a male and female lock buckle to fix the box cover and the box body.

[0043] In a preferred embodiment, the box cover is processed with a cavity to accommodate protruding structural parts in the box body, such as the docking socket on the upper surface of the operation panel and the external drive button of the transfer switch.

[0044] The test process for the speed coil sensor using the above test box is as follows:

[0045] (1) Figure 1 As shown in the figure, plug the oscilloscope test lines into the oscilloscope + / - docking sockets on the operation panel according to the labels and colors.

[0046] (2) Figure 1 As shown, plug the millivoltmeter test leads into the millivoltmeter + / - docking sockets on the operation panel according to the labels and colors.

[0047] (3) Figure 1 As shown, when testing the dual speed coil sensor, plug the first set of sensor test wires connected to the speed coil 1 into the 1 / 3 docking socket on the operation panel according to the number and color distinction;

[0048] Plug the second set of sensor test wires connected to the other speed coil II into the 2 / 4 docking socket on the operation panel according to the number and color.

[0049] When testing a single speed coil sensor, plug the sensor test line connected to the speed coil into the 1 / 3 or 2 / 4 docking socket on the operation panel according to the number and color.

[0050] (4) Figure 1 As shown, plug the ground wire into the ground wire socket on the test box panel.

[0051] (5) Figure 1 As shown, when using speed coil I to test the dual speed coil sensor, press the conversion switch to gear I. When using speed coil II to test the dual speed coil sensor, press the conversion switch to gear II.

[0052] When testing a single-speed coil sensor, press the switch to the gear corresponding to the coil connection, gear Ⅰ or gear II.

[0053] The present invention has been described in detail above with reference to specific embodiments and exemplary examples. However, these descriptions should not be construed as limiting the present invention. Those skilled in the art will appreciate that various equivalent substitutions, modifications, or improvements may be made to the technical solutions and implementations of the present invention without departing from the spirit and scope of the present invention, and all of these modifications fall within the scope of the present invention. The scope of protection of the present invention shall be determined by the appended claims.

[0054] The contents not described in detail in the specification of the present utility model belong to the common knowledge of those skilled in the art.

Claims

1. A test box for a speed coil sensor, characterized in that: It includes a box, an operation panel, a transfer switch, an oscilloscope positive and negative pole docking socket, a millivoltmeter positive and negative pole docking socket and two sets of sensor positive and negative pole docking sockets; The box body provides the outer shell structure for the entire test box, including the box cover and the box body, and the box body supports the operation panel; The operation panel is equipped with a transfer switch, oscilloscope positive and negative docking sockets, millivoltmeter positive and negative docking sockets and sensor positive and negative docking sockets. The connection lines of the docking sockets and the transfer switch are arranged on the back of the operation panel. Connect the positive and negative pole docking sockets of the oscilloscope, the positive and negative pole docking sockets of the millivoltmeter and the positive and negative pole docking sockets of the sensor to the lead plugs of the oscilloscope, millivoltmeter and speed coil sensor, and connect the oscilloscope, millivoltmeter and speed coil sensor to the test box; The positive and negative docking sockets of the oscilloscope and the millivoltmeter are short-circuited respectively, and connected to the corresponding contacts of the conversion switch together with the positive and negative docking sockets of the two sets of sensors. The oscilloscope and the millivoltmeter are electrically connected to the positive and negative docking sockets of the two sets of sensors in turn through the electrical connection conversion of the conversion switch.

2. The test box for the speed coil sensor according to claim 1, characterized in that: The positive and negative pole docking sockets of the oscilloscope, the positive and negative pole docking sockets of the millivoltmeter, and the positive pole docking sockets and the negative pole docking sockets of the two sets of sensor positive and negative pole docking sockets are docking sockets of two colors.

3. The test box for the speed coil sensor according to claim 1, characterized in that: The operation panel is provided with positive and negative pole markings of an oscilloscope positive and negative pole docking socket, a millivoltmeter positive and negative pole docking socket, and two sets of sensor positive and negative pole docking sockets.

4. The test box for the speed coil sensor according to claim 1, characterized in that: The operation panel is provided with a conversion mark of the conversion switch and passage marks corresponding to different conversion directions.

5. The test box for the speed coil sensor according to claim 1, characterized in that: The operation panel is also provided with a grounding wire docking socket, which is electrically connected to the negative pole docking socket of the oscilloscope and the negative pole docking socket of the millivoltmeter. After being connected to the grounding wire plug, the grounding socket is connected to the external speed simulation device.

6. The test box for the speed coil sensor according to claim 1, characterized in that: The transfer switch is a double-pole double-throw rocker switch.

7. The test box for the speed coil sensor according to claim 1, characterized in that: The box cover and the box body are rotatably connected by hinges. A male lock and a female lock are respectively installed on the box cover and the box body, and the two form a male and female lock buckle to fix the box cover and the box body.

8. The test box for the speed coil sensor according to claim 1, characterized in that: The box cover is processed with a cavity to accommodate the protruding structural parts in the box body.

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