Transient interruption test equipment

Abstract

The utility model discloses a transient interruption test device, which is used for testing a sensor and comprises a test board, a test circuit board and a test circuit board, the fixing part is arranged on the test bench and extends along the first direction; the driving part is connected with the fixing part in a sliding manner along the first direction; the pressing part is connected with the driving part in a sliding mode in the first direction; the containing part is arranged on the driving part, located between the pressing part and the test board in the first direction and used for containing the sensor, the connecting part of the sensor faces the pressing part, and the head of the sensor faces the test board; the signal transmitting part is electrically connected with the connecting part of the sensor and is used for transmitting a voltage signal; and the signal receiving part is in communication connection with the signal transmitting part and is used for receiving the voltage signal. According to the utility model, the impact positions of the head and the testboard are the same during the impact test of the head and the testboard, so that the uniqueness of the knocking position of the sensor is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile detection, in particular to a transient break test device. Background Art

[0002] The crankshaft position sensor is one of the most important sensors in the engine electronic control system. It provides the ignition timing (ignition advance angle) and the signal to confirm the crankshaft position. It is used to detect the piston top dead center, crankshaft angle and engine speed. The structure of the crankshaft position sensor varies with different models. It can be divided into three categories: magnetic pulse type, photoelectric type and Hall type. It is usually installed on the front end of the crankshaft, the front end of the camshaft, the flywheel or in the distributor.

[0003] The crankshaft position sensor has a complete electrical circuit inside. Under high temperature or impact, the electrical circuit inside the crankshaft position sensor may be open-circuited for a moment, that is, a momentary disconnection occurs. Therefore, during the production process of the crankshaft position sensor, after the crankshaft position sensor is baked at a high temperature (105±5℃) for more than 30 minutes, it is taken out of the oven and it is necessary to detect whether the crankshaft position sensor has a momentary disconnection within 2 minutes. Usually, the crankshaft position sensor is manually operated to implement the impact momentary disconnection test of the crankshaft position sensor.

[0004] In the prior art, when performing instantaneous break detection on the crankshaft position sensor, manual operation cannot guarantee the uniqueness of the impact position of the product, and different impact positions of the product will lead to different detection effects. Utility Model Content

[0005] The purpose of the utility model is to ensure the uniqueness of the knocking position of the product when the sensor is tested for instantaneous break. The utility model provides an instantaneous break test device, which can ensure the uniqueness of the knocking position of the sensor during the test and the consistent detection effect.

[0006] To solve the above technical problems, the embodiment of the utility model discloses a momentary break test device for testing a sensor, wherein the sensor comprises a body and a connector, the body comprises a head and a connecting part, the connector is connected to the connecting part through a wiring harness, the head comprises a conductive part, and the connecting part is electrically connected to the conductive part; the momentary break test device comprises: a test bench; a fixing part, which is arranged on the test bench and extends along a first direction; a driving part, which is connected to the fixing part in a slidable manner along the first direction; a pressing part, which is connected to the driving part in a slidable manner along the first direction; a housing part, which is arranged on the driving part and is located between the pressing part and the test bench along the first direction, and is used to place the sensor, the connecting part of the sensor is arranged facing the pressing part, and the head of the sensor is arranged facing the test bench; a signal transmitting part, which is used to be electrically connected to the connecting part of the sensor and is used to send a voltage signal; a signal receiving part, which is communicatively connected to the signal transmitting part and is used to receive the voltage signal.

[0007] The above-mentioned sensors are, for example, wheel speed sensors, crankshaft position sensors and other sensors. In order to facilitate the description of the instantaneous interruption test equipment provided by the present application, the crankshaft position sensor will be used as an example for description below.

[0008] When the above technical solution is used to perform a momentary break test, the body of the crankshaft position sensor is first clamped to the accommodating portion, and the head of the crankshaft position sensor is directed toward the test bench along the first direction, and the connecting portion of the crankshaft position sensor is directed toward the pressing portion. The pressing portion then slides toward the connecting portion along the first direction until the pressing portion is pressed against the connecting portion, ensuring that the collision position of the head and the test bench is the same each time during the collision test between the head and the test bench, thereby ensuring the uniqueness of the collision position of the sensor. After the pressing portion presses the crankshaft position sensor against the accommodating portion, the pressing portion, the crankshaft position sensor, and the accommodating portion slide together with the driving portion along the first direction toward the test bench until the head of the crankshaft position sensor collides with the test bench.

[0009] When the crankshaft position sensor does not have a momentary interruption, the connecting part is electrically connected to the conductive part, the signal transmitting part transmits the path voltage signal of the crankshaft position sensor to the signal receiving part, and the detection equipment works normally; when the crankshaft position sensor has a momentary interruption, the connecting part is electrically disconnected from the conductive part, the signal transmitting part sends the open circuit voltage signal of the crankshaft position sensor to the signal receiving part, and the detection equipment alarms and stops working.

[0010] According to another specific embodiment of the utility model, the embodiment of the utility model discloses a momentary break testing device, the fixed part includes a first sliding part, the driving part includes a second sliding part, along the second direction, the fixed part and the driving part are spaced apart, the first sliding part and the second sliding part are located between the fixed part and the driving part, and the second sliding part is connected to the first sliding part in a slidable manner along the first direction.

[0011] By adopting the above technical solution, the first sliding part and the second sliding part cooperate with each other, so that the driving part can slide in the first direction through the second sliding part, and then drive the accommodating part and the crankshaft position sensor arranged in the accommodating part to slide in the first direction, so that the head of the crankshaft position sensor collides with the test bench, and after each collision, the head of the crankshaft position sensor can be moved away from the test bench, which is convenient for repeating the collision test or replacing the crankshaft position sensor.

[0012] According to another specific embodiment of the utility model, the embodiment of the utility model discloses a momentary break test device, which also includes a first driving member and a driving connecting member. Along the second direction, the first driving member is arranged on the side of the fixed part facing away from the driving part, and the driving connecting member passes through the fixed part along the second direction. The first driving member is connected to the driving part through the driving connecting member, and the first driving member is used to drive the driving part to slide along the first direction.

[0013] By adopting the above technical solution, the first driving member transmits the driving force to the driving part through the driving connecting member. At the same time, the driving connecting member passes through the fixed part along the second direction, so that the first driving member and the driving part are respectively arranged on both sides of the fixed part in the second direction. This can not only realize the sliding of the driving part in the first direction, but also make full use of the space of the fixed part in the second direction to set the first driving member and the driving part.

[0014] According to another specific embodiment of the utility model, the embodiment of the utility model discloses a momentary break testing device, wherein the first driving member includes a first driving member body, the first driving member body is fixed to the fixed part, the first driving member body has a first sliding end, the first sliding end is connected to the driving connecting member, and the first driving member body is used to drive the first sliding end and the driving connecting member to slide together along the first direction.

[0015] By adopting the above technical solution, the first driving member body fixed to the fixed part provides a driving force, drives the first sliding end to slide along the first direction, and pushes the driving connecting member connected to the first sliding end to slide along the first direction. Through the cooperation of the first driving member body and the first sliding end, the magnitude of the driving force can be flexibly controlled. For example, the first driving member body can be a cylinder, and the first sliding end can be a piston rod. The magnitude of the driving force can be flexibly controlled by adjusting the gas pressure or gas flow of the cylinder.

[0016] According to another specific embodiment of the utility model, the embodiment of the utility model discloses a momentary break testing device, the first driving member also includes an elastic buffer portion, the elastic buffer portion is arranged between the first sliding end and the driving connecting member, and abuts against the first sliding end and the driving connecting member respectively along the first direction.

[0017] By adopting the above technical solution, an elastic buffer portion is provided between the first sliding portion and the driving connecting member. When the head of the sensor contacts the test bench, the elastic buffer portion can slow down the driving force transmitted from the first driving member to the driving connecting member, thereby avoiding excessive impact force and damaging the first sliding portion or the driving connecting member.

[0018] According to another specific embodiment of the utility model, the embodiment of the utility model discloses a momentary break testing device, along the second direction, the driving part includes a third sliding part, the clamping part includes a fourth sliding part, along the second direction, the driving part is located between the clamping part and the fixed part, the third sliding part and the fourth sliding part are located between the clamping part and the driving part, and the fourth sliding part is connected to the third sliding part in a slidable manner along the first direction.

[0019] With the above technical solution, the pressing part is connected to the third sliding part of the driving part in a slidable manner in the first direction through the fourth sliding part, so that the pressing part can slide toward the accommodating table along the first direction, and finally abut against the accommodating table, pressing the sensor against the accommodating table, ensuring that the impact position of the sensor will not change during the impact test. When the impact is over, the pressing part can slide away from the accommodating table along the first direction, which is convenient for replacing the sensor.

[0020] According to another specific embodiment of the utility model, the embodiment of the utility model discloses a momentary break test device, which also includes a second driving member, the second driving member includes a second driving member body, the second driving member body is fixed to the driving part, the second driving member body has a second sliding end, the second sliding end is connected to the fourth sliding part, and the second driving member body is used to drive the second sliding end and the clamping part to slide along the first direction.

[0021] By adopting the above technical solution, the second driving member body fixed to the driving part provides driving force, so that the second sliding end slides along the first direction, and the second sliding end and the driving end are arranged relative to each other along the first direction. By cooperating with the second driving member body and the second sliding end, the magnitude of the driving force can be flexibly controlled. For example, the second driving member body can be a cylinder, and the second sliding end can be a piston rod. The magnitude of the driving force can be flexibly controlled by adjusting the gas pressure or gas flow of the cylinder.

[0022] According to another specific embodiment of the utility model, the clamping portion includes a clamping end, and along the second direction, the clamping end is arranged on the side of the fourth sliding portion facing away from the third sliding portion, the accommodating portion includes a mounting hole, the body is clamped in the mounting hole, the connecting portion is arranged facing the clamping end, the mounting hole is located between the clamping end and the test bench along the first direction, and along the first direction, the clamping end and the mounting hole are arranged opposite to each other.

[0023] By adopting the above technical solution, the clamping end and the mounting hole are arranged opposite to each other in the first direction. When the body of the sensor is clamped in the mounting hole, the clamping end can fully clamp the connecting part of the sensor.

[0024] According to another specific embodiment of the utility model, the embodiment of the utility model discloses a momentary break test device, which also includes a detection component, which is communicatively connected to the second driving member, and the detection component includes a first detection member and a second detection member, and the first detection member and the second detection member are arranged in an accommodating portion, and the first detection member and the second detection member are respectively located on two opposite sides of the mounting hole, for detecting the clamping state of the main body and the mounting hole and outputting a driving signal to the second driving member.

[0025] By adopting the above technical solution, the first detection member and the second detection member are respectively located on opposite sides of the mounting hole. When the first detection member and the second detection member sense that the sensor is connected to the mounting hole, a driving signal is output to the second driving member, and the second driving member drives the clamping part to slide and clamp the sensor.

[0026] According to another specific embodiment of the utility model, the embodiment of the utility model discloses a momentary break test device, which includes a marking component, wherein the marking component is arranged at one end of the accommodating portion in a third direction, and the marking component includes a marking piece, wherein the marking piece is slidably arranged in the accommodating portion along the third direction, and the marking piece extends through the mounting hole along the third direction, and is used to mark the sensor for which the test has been completed.

[0027] By adopting the above technical solution, the marking member is slidably arranged in the accommodating portion along the third direction, and the marking member extends through the mounting hole along the third direction. After the sensor test is completed, the marking member slides toward the sensor along the third direction, leaving a mark on the body of the sensor to indicate that the sensor has been tested, thereby avoiding repeated testing of the same sensor.

[0028] According to another specific embodiment of the utility model, the embodiment of the utility model discloses a momentary break test device, which includes a third driving member, which is connected to the marking member, and the third driving member is used to drive the marking member to slide along the third direction.

[0029] According to another specific embodiment of the utility model, the embodiment of the utility model discloses a momentary break test device, the momentary break test device includes a fourth driving member, the signal emitting part includes a clamping member and a signal emitting member, the clamping member has an installation groove, a sensor is provided in the installation groove, the sensor is communicatively connected with the fourth driving member, the fourth driving member is connected with the signal emitting member, and is used to drive the signal emitting member to move along the second direction close to the connector so that the connector is electrically connected to the signal emitting member.

[0030] By adopting the above technical solution, the connector is clamped in the clamping part of the signal transmitting part to prevent the electrical connection between the connector and the signal transmitting part from being disconnected during testing, which would affect the instantaneous break test of the sensor. A sensor is provided in the mounting groove of the clamping part. When the sensor detects that the connector is clamped in the mounting groove, the fourth driving part drives the signal transmitting part to move along the second direction towards the connector, thereby improving the degree of automation of the equipment.

[0031] According to another specific embodiment of the utility model, the embodiment of the utility model discloses a momentary break testing device, the signal receiving part includes an operational amplifier module and a JK trigger, the operational amplifier module is used to receive the voltage signal and output a high level or a low level, the operational amplifier module and the JK trigger are electrically connected, and the JK trigger is used to output a fault signal.

[0032] Using the above technical solution, the signal receiving part includes an operational amplifier module and a JK trigger. The operational amplifier module and the JK trigger are electrically connected and are used together to determine whether a momentary interruption occurs in the sensor. Compared with using the JK trigger alone as the signal receiving part, this technical solution has higher fault signal sensitivity.

[0033] According to another specific embodiment of the utility model, the embodiment of the utility model discloses a momentary break test device, which also includes a resistance meter, which is electrically connected to the signal receiving part and is used to detect the resistance value of the head according to the voltage signal.

[0034] By adopting the above technical solution, after the crankshaft position sensor to be tested is installed on the receiving platform after high temperature baking, the resistance meter can measure the resistance of the crankshaft position sensor head before the instantaneous break test to determine whether the resistance value of the crankshaft position sensor to be tested is higher than the set value. If the resistance value of the crankshaft position sensor to be tested is higher than the set value, it means that the crankshaft position sensor to be tested has been damaged after high temperature baking, and the detection equipment alarms and stops the instantaneous break detection work; if the resistance value of the crankshaft position sensor to be tested is not higher than the set value, it means that the crankshaft position sensor to be tested is not damaged, and the instantaneous break test under collision is started.

[0035] According to another specific embodiment of the utility model, the embodiment of the utility model discloses a momentary interruption test device, which also includes an alarm unit, which is respectively communicated with the JK trigger and the resistance meter, and is used to receive the fault signal and issue an alarm prompt.

[0036] By adopting the above technical solution, during the test, when the head of the sensor is momentarily disconnected, the JK trigger outputs an alarm signal to the alarm unit, and the alarm unit can issue an alarm prompt in time. At the same time, before the test starts, when the resistance of the sensor is tested by the resistance meter, when the measured resistance is greater than the set value, it proves that the sensor to be tested is damaged, the resistance meter outputs an alarm unit to the fault unit, and the fault unit issues a prompt to avoid invalid testing of the damaged sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 A perspective schematic diagram of a crankshaft position sensor in some embodiments is shown.

[0038] Figure 2 A three-dimensional schematic diagram of a transient interruption test device according to an embodiment of the utility model is shown.

[0039] Figure 3 A partial side view of a transient interruption testing device according to an embodiment of the utility model is shown.

[0040] Figure 4 A three-dimensional schematic diagram of a signal transmitting portion of a transient interruption testing device according to an embodiment of the utility model is shown.

[0041] Figure 5 A circuit diagram of a signal receiving unit of a transient interruption test device according to an embodiment of the utility model is shown.

[0042] Figure 6 A schematic diagram of a power supply circuit of a signal receiving part of a transient interruption test device according to an embodiment of the utility model is shown.

[0043] Figure 7A circuit diagram showing an operational amplifier module and a JK trigger of a signal receiving part of a transient interruption test device according to an embodiment of the utility model is shown.

[0044] Figure 8 A three-dimensional schematic diagram showing a first sliding part and a second sliding part of a transient interruption testing device according to an embodiment of the utility model is shown.

[0045] Fig. 9 A partially enlarged schematic diagram of a transient interruption test device according to an embodiment of the utility model is shown.

[0046] Fig.10 A three-dimensional schematic diagram of a first driving member of the instantaneous interruption testing device according to an embodiment of the utility model is shown.

[0047] Fig.11 A partial front view of a transient interruption testing device according to an embodiment of the utility model is shown.

[0048] Fig.12 A schematic structural diagram of a test bench, a fixing part, a driving part, a pressing part, and a containing part of a transient interruption test device according to an embodiment of the utility model is shown.

[0049] Fig.13 A cross-sectional view showing a receiving station of a momentary interruption testing device according to an embodiment of the present invention.

[0050] Fig.14 A side view of a transient interruption testing device according to an embodiment of the utility model is shown. DETAILED DESCRIPTION

[0051] The following is an explanation of the implementation of the present invention by specific specific embodiments. Those skilled in the art can easily understand other advantages and functions of the present invention from the contents disclosed in this specification. Although the description of the present invention will be introduced in conjunction with the preferred embodiment, this does not mean that the features of this utility model are limited to this implementation. On the contrary, the purpose of introducing the utility model in conjunction with the implementation is to cover other options or modifications that may be extended based on the claims of the present invention. In order to provide a deep understanding of the present invention, the following description will include many specific details. The present invention can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the present invention, some specific details will be omitted in the description. It should be noted that, in the absence of conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0052] It should be noted that in this specification, similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0053] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0054] The terms “first”, “second”, etc. are only used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0055] In the description of this embodiment, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this embodiment can be understood according to specific circumstances.

[0056] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0057] There are many sensors with different functions in the automobile engine, such as wheel speed sensors, crankshaft position sensors, etc. During the production process of the sensors, they usually need to be subjected to high temperature and impact to detect whether the sensors have momentary interruptions. Momentary interruption refers to the phenomenon that the complete electrical circuit inside the sensor is momentarily open under high temperature or impact. If the sensor has a momentary interruption, it should be thrown into a scrap bin for scrapping.

[0058] In some embodiments, the impact test is usually performed by manually operating the sensor by the staff, which has the following disadvantages: ① The strength of the manual operation cannot be guaranteed, and a small force may not be able to detect failed products; ② Manual operation cannot guarantee the uniqueness of the knocking position of the product, and knocking the product at different positions will lead to different detection results; ③ Manual operation cannot ensure that the product will complete the instantaneous break detection within 2 minutes of leaving the oven; ④ Manual operation cannot perform labeling management, and cannot distinguish between tested products and products to be tested.

[0059] See also Figure 1The crankshaft position sensor 10 includes a body 11 and a connector 12. The body 11 includes a head 111 and a connecting portion 112. The connector 12 is connected to the connecting portion 112 via a wiring harness 13. The connecting portion 112 includes a connector 1121 and a shell 1122. The head 111 includes a conductive portion and a conductive mounting portion (not shown in the figure) connected to each other. The conductive portion and the conductive mounting portion are arranged in the head 111, and the connecting portion 112 is electrically connected to the conductive portion.

[0060] Exemplarily, the conductive mounting portion is a winding shaft, the conductive portion is a copper wire, the copper wire is wound around the winding shaft to form a coil, and the copper wire is soldered to the winding shaft by soldering. When the connector is electrically connected to the outside, the conductive portion, the conductive mounting portion, and the connecting portion form a complete electrical circuit. Under high temperature or impact, the solder may fall off or the conductive portion may be disconnected. At this time, the aforementioned electrical circuit may be instantly open, that is, a momentary disconnection may occur.

[0061] See also Figure 2 , Figure 2 A three-dimensional schematic diagram of the momentary break detection device provided in an embodiment of the present application is shown. In some embodiments, the momentary break detection device includes a test bench 21, a fixing part 22, a driving part 23, a clamping part 24, a housing part 25, a signal transmitting part 26, a resistance meter 27 and a central control box 28, a pneumatic switch 29, a timing switch 30, an air pressure control component 31, and a signal receiving part (located inside the central control box 28, not shown in the figure). The components of the aforementioned parts are integrated on a mounting plate 33.

[0062] In some embodiments, reference Figure 2 , Figure 3 The fixing portion 22 is disposed on the test bench 21 and extends along the first direction X. The driving portion 23 is connected to the fixing portion 22 in a slidable manner along the first direction X. The pressing portion 24 is connected to the driving portion 23 in a slidable manner along the first direction X. The accommodating portion 25 is disposed on the driving portion 23 and is located between the pressing portion 24 and the test bench 21 along the first direction X. The accommodating portion 25 is used to place the crankshaft position sensor. The connecting portion 112 of the crankshaft position sensor is disposed facing the pressing portion 24, and the head portion 111 is disposed facing the test bench 21.

[0063] Exemplarily, the test bench 21, the fixing portion 22, the driving portion 23 and the accommodating portion 25 are all arranged in a plate shape, wherein the fixing portion 22, the driving portion 23 and the pressing portion 24 are arranged at intervals along the second direction Y, and the driving portion 23 is arranged between the fixing portion 22 and the pressing portion 24. The test bench 21 is parallel to the accommodating portion 25, and a rubber 211 is arranged on the test bench 21. When the crankshaft position sensor collides with the test bench 21, the rubber 211 can play a buffering and protective role on the head 111 of the crankshaft position sensor and the test bench 21, thereby preventing the head 111 of the crankshaft position sensor from directly contacting the test bench 21.

[0064] In some embodiments, along the third direction Z, the signal transmitter 26 is disposed on the right side of the test bench 21 to facilitate electrical connection with the connecting portion of the sensor for transmitting a voltage signal. The signal receiving portion is communicatively connected with the signal transmitter for receiving a voltage signal.

[0065] When performing a momentary break test, firstly, the body 11 of the crankshaft position sensor is clamped to the accommodating portion 25, specifically, along the first direction X, so that the head 111 faces the test bench 21, and the connecting portion 112 faces the pressing portion 24. Then the pressing portion 24 slides toward the connecting portion 112 along the first direction X until the pressing portion 24 is pressed against the connecting portion 112, ensuring that the collision position of the head 111 and the test bench 21 is the same each time during the collision test. After the pressing portion 24 presses the body 11 against the accommodating portion 25, the pressing portion 24, the body 11 and the accommodating portion 25 slide together with the driving portion 23 along the first direction X toward the test bench 21 until the head 111 collides with the test bench 21.

[0066] When the crankshaft position sensor does not have a momentary interruption, the connecting part is electrically connected to the conductive part, the signal transmitting part transmits the normal voltage signal of the crankshaft position sensor to the signal receiving part, and the detection equipment works normally; when the crankshaft position sensor has a momentary interruption, the signal transmitting part sends the open circuit voltage signal of the crankshaft position sensor to the signal receiving part, and the detection equipment alarms and stops working.

[0067] In some embodiments, reference Figures 2 to 4 The signal transmitting part 26 includes a clamping member 261 and a signal transmitting member 262. The signal transmitting member 26 is used to transmit the voltage signal of the electrical circuit in the head 111 of the crankshaft position sensor. The clamping member 261 has a mounting groove 2611. The mounting groove 2611 is provided with a sensor 264. Specifically, the sensor 264 is provided at the bottom of the mounting groove 2611. Exemplarily, the signal transmitting part 26 includes a box body 263, and the clamping member 261 is plate-shaped. It can be understood that the clamping member 261, the test bench 21, the fixing part 22, the driving part 23 and the accommodating part 25 can also be other shapes or structures, such as columnar, rod-shaped, etc., and are not limited to the plate-shaped in the present application. The mounting groove 2611 is located at a position where the clamping member 261 is close to the top of the box body 263, and the signal transmitter 262 is located inside the box body 263. When the connector 12 of the crankshaft position sensor is connected to the mounting groove 2611, the sensor can output a command to drive the transmitter 262 to move toward the connector 12 along the second direction Y. For example, the sensor can be a position sensor, a gravity sensor, etc., and this application does not limit this.

[0068] In some embodiments, the instantaneous break test device includes a fourth driving member (not shown in the figure), the sensor is in communication connection with the fourth driving member, and the fourth driving member is connected to the signal emitting member 262. When the sensor detects that the connector 12 is engaged with the mounting groove 2611, the sensor sends a driving instruction to the fourth driving member, and the fourth driving member drives the signal emitting member 262 to move close to the mounting groove 2611 along the second direction Y, so that the connector 12 is electrically connected to the signal emitting member 262. Exemplarily, the fourth driving member includes a fourth cylinder and a fourth piston rod, and the fourth piston rod is connected to the signal emitting member, so that the signal emitting member moves in the second direction Y.

[0069] In some embodiments, the signal receiving unit 32 is an integrated circuit chip, which is disposed in the central control box. Figure 5 , Figure 5 The circuit diagram of the signal receiving unit 32 provided in the embodiment of the present application is shown. The signal receiving unit 32 includes an operational amplifier module 321 and a JK trigger 322. The operational amplifier module 321 is used to receive the voltage signal sent by the signal transmitting unit to the signal receiving unit 32, and output a high level or a low level. The operational amplifier module 321 and the JK trigger 322 are electrically connected. The JK trigger 322 is used to output a fault signal (i.e., an open circuit voltage signal when the crankshaft position sensor fails).

[0070] Exemplarily, the operational amplifier module 321 is connected to the signal transmitter 26 for communication. When the head of the crankshaft position sensor does not have a momentary break, the operational amplifier module 321 is forwardly deflected, the JK trigger 322 is not triggered, and no fault signal is output; when the sensor has a momentary break, the operational amplifier module 321 is reversed and outputs a low level, the JK trigger 322 is triggered by the falling edge, outputs a low level, and outputs a fault signal at the same time. Exemplarily, the model of the operational amplifier module 321 is LM2901N, and the model of the JK trigger 322 is 74LS112. It can be understood that the operational amplifier module 321 and the JK trigger 322 can also use components of other models.

[0071] In some embodiments, the signal receiving unit includes a power supply unit (see Figure 6 , Figure 6 A schematic diagram showing a power circuit diagram of a signal receiving portion of a transient interruption test device according to an embodiment of the present invention) and a detection portion (reference Figure 5 , Figure 7 , Figure 7 A circuit diagram showing an operational amplifier module and a JK trigger of a signal receiving part of a transient interruption test device according to an embodiment of the present invention is shown. Figure 6Where C1-C11 are capacitors of different capacities, 7818, 7812, 7805 are voltage regulators, and R1 is a resistor. For example, the capacities of C1, C3, C5, and C7 are 47μf, the capacities of C2, C4, C6, C9, and C10 are 0.1μf, the capacities of C11 are 10μf, and the resistance value of R1 is 22K. Figure 6 The power supply part of the signal receiving part can output 24V, 12V, 5V, and 2.5V DC power to power other parts of the signal receiving part.

[0072] refer to Figure 7 In some embodiments, the JK trigger 322 and the operational amplifier module 321 together form a detection part. Figure 7 R1-R5 are resistors, C1-C2 are capacitors, 2SC1815 is a transistor, and the optocoupler is 4N25. For example, the resistance value of R1 is 115K, the resistance value of R2 is 1K, the resistance value of R3 is 1K, the resistance value of R4 is 5K, the resistance value of R5 is 10K, the capacitance of C1 is 0.1PF, and the capacitance of C2 is 103PF. The positive pole of the crankshaft position sensor 10 is connected to a 12V power supply, the input end of the op amp module 321, the JK trigger 322, and the optocoupler are connected to a 5V power supply, the output end of the optocoupler is connected to a 12V power supply, and the positive pole of the indicator light is connected to a 24V power supply.

[0073] In some embodiments, the JK trigger 322 has a switch K1. Before the instantaneous disconnection test begins, the switch K1 is first turned to the NC position to set the CLR terminal to a high level. When the crankshaft position sensor 10 is momentarily disconnected, the operational amplifier module 321 can collect and amplify the instantaneous signal, and its positive input terminal is at a low level, and a negative pulse is given to the JK trigger 322 at the output terminal. The output terminal of the JK trigger 322 outputs and maintains a low level, that is, a fault signal is output.

[0074] In some embodiments, the instantaneous interruption test device further includes an alarm unit, which is disposed in the main control box and is respectively connected to the JK trigger and the resistance meter for receiving the aforementioned fault signal and issuing an alarm prompt. Figure 7 4N25) and indicator light, the optocoupler is set at the output end of the JK trigger. When the optocoupler input end receives the fault signal, the optocoupler is turned on, so that the relay KA1 remains in the energized state, and the indicator light is on to prompt the operator. In some embodiments, the central control box is provided with a display screen, and the fault unit is connected to the display screen to display the alarm information on the screen to prompt the staff. After the detection is completed, the switch K1 is turned to the NO position to clear the trigger and relay output.

[0075] In some embodiments, reference Figure 8 , Fig. 9 The fixing part 22 includes a first sliding part 221, and the driving part 23 includes a second sliding part 231. The fixing part 22 and the driving part 23 are spaced apart along the second direction Y. The first sliding part 221 and the second sliding part 231 are located between the fixing part 22 and the driving part 23. The second sliding part 231 is connected to the first sliding part 221 in a slidable manner along the first direction X. Exemplarily, the first sliding part 221 is a first slide rail 2211 and a second slide rail 2212 extending along the first direction X. The first slide rail 2211 and the second slide rail 2212 are spaced apart along the third direction Z. The second sliding part 231 includes four first sliders, two of which are provided on the first slide rail 2211 and spaced apart on the first slide rail 2211 along the first direction X. The other two first sliders are provided on the second slide rail 2212 and spaced apart on the second slide rail 2212 along the first direction X.

[0076] In some embodiments, reference Figures 8 to 10 The instantaneous interruption test device further includes a first driving member 40 and a driving connection member. The first driving member 40 is disposed on the side of the fixing portion 22 facing away from the driving portion 23 along the second direction Y. The driving connection member passes through the fixing portion 22 along the second direction Y. The first driving member 40 is connected to the driving portion 23 through the driving connection member. The first driving member 40 is used to drive the aforementioned driving portion 23 to slide along the first direction X. Exemplarily, the driving connection member is a connecting column 41 extending along the second direction Y. The fixing portion 22 has a first through hole 222. The connecting column 41 passes through the first through hole 222. One end of the connecting column 41 is connected to the driving portion 23, and the other end is connected to the first driving member 40.

[0077] In some embodiments, the first driving member 40 includes a first driving member body 43, the first driving member body 43 is fixed to the fixed part 22, the first driving member body 43 has a first sliding end 44, the first sliding end 44 and the connecting column 41 are spaced apart along the first direction X, and the first sliding end 44 is connected to the connecting column 41, and the first driving member body 43 is used to drive the first sliding end 44 and the connecting column 41 to slide together along the first direction X.

[0078] Exemplarily, the first driving member body 43 is the first cylinder, the first sliding end 44 is the first piston rod, and a first abutment block 441 is provided at one end of the first piston rod away from the first cylinder along the first direction X. A connecting rod extending along the first direction is provided between the first abutment block 441 and the connecting column, and the connecting rod is passed through the first abutment block 441 and the connecting column 41. When the first piston rod moves downward, the first abutment block 441 slides downward along the connecting rod 411 until it abuts against the connecting column 41, pushing the connecting column 41 to slide downward.

[0079] In some embodiments, the first driving member 40 further includes an elastic buffer portion 45, which is disposed between the first sliding end 44 and the connecting column 41, and abuts against the first sliding end 44 and the connecting column 41 respectively along the first direction X. Exemplarily, when the head of the sensor contacts the test bench, the elastic buffer portion 45 can slow down the driving force transmitted from the first driving member 40 to the driving connecting member, thereby preventing the impact force from being too large and damaging the first sliding portion or the driving connecting member.

[0080] Exemplarily, the elastic buffer 45 is a spring extending along the first direction X, which is sleeved on the connecting rod 411, and its two ends in the first direction X are respectively connected to the lower surface of the first abutting block 441 and the upper surface of the connecting column 41. When the first abutting block 441 slides downward, the resistance of the spring acts as a buffer to prevent the first abutting block 441 from directly rushing toward the connecting column 41 and damaging the connecting column 41 or the first abutting block 441. It should be noted that the elastic buffer of the present application is not limited to a spring, but can also be a component of other forms or structures such as a spring sheet.

[0081] In some embodiments, reference Fig.11 , Fig.12 , along the second direction Y, the driving part 23 includes a third sliding part 232, the pressing part 24 includes a fourth sliding part 241, along the second direction Y, the driving part 23 is located between the pressing part 24 and the fixing part 22, the third sliding part 232 and the fourth sliding part 241 are located between the pressing part 24 and the driving part 23, and the fourth sliding part 241 is connected to the third sliding part 232 in a slidable manner along the first direction X. Exemplarily, the third sliding part 232 is a third slide rail extending along the first direction X, the fourth sliding part 241 includes a sliding plate, and along the second direction Y, a second slider is provided on a side of the sliding plate close to the driving part 23, and the second slider cooperates with the third slide rail to realize that the pressing part 24 is connected to the driving part 23 in a sliding manner along the first direction X.

[0082] It should be noted that in the embodiment of the present application, the fixing part and the driving part, and the driving part and the clamping part are not limited to sliding by means of the cooperation of the slide rail and the slider, but can also achieve sliding in the first direction X by other means such as a lead screw.

[0083] In some embodiments, the instantaneous break testing device also includes a second driving member 50, which includes a second driving member body 51, which is fixed to the driving part 23, and the second driving member body 51 has a second sliding end 52, which is connected to the fourth sliding part 241, and the second driving member body 51 is used to drive the second sliding end 52 and the clamping part 24 to slide along the first direction X.

[0084] Exemplarily, the second driving member body 51 is a second cylinder, which is fixedly connected to the driving part 23, and the second sliding end 52 is a second piston rod. A second abutment block is provided at one end of the second piston rod away from the first cylinder along the first direction X, and is connected to the fourth sliding part 241 through the second abutment block. Before the collision test begins, the second piston rod moves downward, causing the second abutment block to slide downward, pushing the pressing part 24 to slide downward to press the body of the crankshaft position sensor; when the collision test is over, the second piston rod slides upward, driving the pressing part 24 to slide upward away from the accommodating part 25 to relax the pressing on the body of the crankshaft position sensor, so that the staff can replace the test product.

[0085] In some embodiments, reference Fig.12 The clamping portion 24 includes a clamping end 242. Along the second direction Y, the clamping end 242 is arranged on the side of the fourth sliding portion 241 that is away from the third sliding portion 232. Specifically, a boss 243 is also provided between the clamping end 242 and the fourth sliding portion 241. The boss 243 extends along the second direction Y and is respectively connected to the clamping end 242 and the fourth sliding portion 241. The accommodating portion 25 includes a mounting hole 251. The body is clamped in the mounting hole 251. The connecting portion 112 is arranged facing the clamping end 241. The mounting hole 251 is located between the clamping end 242 and the test bench 21 along the first direction X. Along the first direction X, the boss 243 makes the clamping end 242 and the mounting hole 251 arranged opposite to each other. Exemplarily, the clamping end 242 has a cavity 2421 extending along the first direction X. When the clamping end 242 slides downward, the connecting head 1121 (see Figure 1 ) can be accommodated in the cavity 2421, avoiding the contact between the pressing end 242 and the connector, so that the bottom surface of the pressing end 241 can abut against the housing 1122 of the connector (see Figure 1 ) upper surface to fix the shell 1122 in the mounting hole 251.

[0086] In some embodiments, reference Fig.11 , Fig.12 The instantaneous break test device also includes a detection component 60, which is communicatively connected to the second driving member 50. The detection component 60 includes a first detection member 61 and a second detection member 62. The first detection member 61 and the second detection member 62 are arranged in the accommodating portion 25, and the first detection member 61 and the second detection member 62 are respectively located on two opposite sides of the mounting hole 251, for detecting the clamping state between the body 11 and the mounting hole 251 and outputting a driving signal to the second driving member 50.

[0087] Exemplarily, the detection assembly 60 includes a first mounting block 63 and a second mounting block 64, which are arranged relative to each other in a third direction Z, and are in the shape of triangular prisms. The first mounting block 63 is connected to the driving portion 23 and the accommodating portion 25 at the same time, and the second mounting block 64 is also connected to the driving portion 23 and the accommodating portion 25 at the same time. The first detection member 61 is arranged on the first mounting block 63, and the second detection member 62 is arranged on the second mounting block 64.

[0088] In some embodiments, the first detection member and the second detection member include a first infrared sensor and a second infrared sensor, respectively. When the crankshaft position sensor is not clamped on the mounting hole, the infrared rays emitted by the first infrared sensor can be received by the second infrared sensor, and at this time the detection component will not output a driving signal to the second drive member; when the housing of the crankshaft position sensor is clamped in the mounting hole, due to the obstruction of the connector of the crankshaft position sensor, the infrared rays emitted by the first infrared sensor cannot be received by the second infrared sensor, and at this time the detection component outputs a driving signal to the second drive member, and the second drive member drives the clamping portion to slide and clamp the sensor. It should be noted that the first detection member and the second detection member are not limited to infrared sensors, and other forms of sensors may also be applicable to the instantaneous break test equipment of the present application.

[0089] In some embodiments, reference Fig.12 , Fig.13 The instantaneous break test device includes a marking assembly 70, which is disposed at one end of the accommodating portion 25 in the third direction Z. The marking assembly 70 includes a marking member 71, which is slidably disposed in the accommodating portion 25 along the third direction Z. The marking member 71 extends through the mounting hole 251 along the third direction Z to mark the sensor that has completed the test. Exemplarily, the marking member 71 is a marking needle extending along the third direction Z.

[0090] Exemplarily, the marking assembly 70 includes a mounting platform 72, which is connected to the accommodating portion 25, and a marking member 71 is disposed on the mounting platform 72. After the body of the crankshaft position sensor is clamped in the mounting hole 251, the marking member 71 passes through the second through hole opened on the side of the accommodating portion 25 along the third direction Z and is disposed opposite to the shell of the connecting portion, wherein the mounting hole 251 is connected to the second through hole. After the instantaneous break test of the crankshaft position sensor is completed, the marking member 71 slides toward the body of the crankshaft position sensor along the third direction Z, leaving a mark on the shell of the connecting portion to indicate that the sensor has been tested and to avoid repeated testing of the same sensor. The end of the marking member 71 close to the shell is conical, and a small hole can be left on the shell as a mark. In addition, a colored pigment or the like can also be used as a mark, and this application does not limit this.

[0091] In some embodiments, the instantaneous break test device includes a third driving member 80, which is connected to the marking member 71, and is used to drive the marking member 71 to slide along the third direction Z. Exemplarily, the third driving member 80 is a third cylinder, and the third cylinder has a third piston rod 81, which is connected to the marking member 71, and the third piston rod 81 slides along the third direction Z, driving the marking member 71 to reciprocate in the third direction Z.

[0092] In some embodiments, reference Fig.14 The air pressure control component 31 includes a solenoid valve 311 and an air pressure regulating component 312. When the instantaneous break detection device includes multiple cylinders, the solenoid valve 311 can realize precise control of air supply to different cylinders, and the air pressure regulating component 312 can adjust the air pressure, thereby changing the driving force output by the cylinder.

[0093] It should be noted that the first driving member, the second driving member, the third driving member and the fourth driving member in the embodiment of the present application are respectively the first cylinder, the second cylinder, the third cylinder and the fourth cylinder, and can also be set to the first hydraulic cylinder, the second hydraulic cylinder, the third hydraulic cylinder and the fourth hydraulic cylinder. The present application does not impose any restrictions on the type of driving member.

[0094] In some embodiments, the instantaneous break test equipment further includes a resistance meter 27, which is electrically connected to the signal receiving unit and is used to detect the resistance value of the head according to the voltage signal. When the resistance value is greater than the set value, the resistance meter outputs a fault signal. After the crankshaft position sensor to be tested after high-temperature baking is installed on the accommodation table, the resistance meter can measure the resistance of the crankshaft position sensor head before the instantaneous break test to determine whether the resistance value of the crankshaft position sensor to be tested is higher than the set value. If the resistance value of the crankshaft position sensor to be tested is higher than the set value, it means that the crankshaft position sensor to be tested has been damaged after high-temperature baking, and the detection equipment alarms and stops the instantaneous break detection work; if the resistance value of the crankshaft position sensor to be tested is not higher than the set value, it means that the crankshaft position sensor to be tested is not damaged, and then the instantaneous break test under collision is started. Exemplarily, the resistance meter has a box structure. For the crankshaft position sensor, the set value can be 1175Ω. When the resistance value of the head measured by the resistance meter is higher than 1175Ω, it proves that the crankshaft position sensor to be tested has been instantaneously broken. At this time, the resistance meter sends an alarm signal to the central control system, and the instantaneous break device stops working. The set value can be set according to the requirements of different sensors; when the resistance value of the head measured by the resistance meter is not higher than 1175Ω, it proves that the crankshaft position sensor to be tested has no instantaneous interruption, and the instantaneous interruption test under collision can be started.

[0095] In some embodiments, reference Figure 2 , Fig.14The pneumatic switch 29 includes a first pneumatic switch 291 and a second pneumatic switch 292. The first pneumatic switch 291 and the second pneumatic switch 292 are arranged at intervals along the third direction Z. The pneumatic switch 29 is connected to the air pressure control component 31 for communication. When the air pressure control component 31 needs to be started to make the first drive, the second drive, the third drive, and the fourth drive run, the staff needs to press the first pneumatic switch 291 and the second pneumatic switch 292 with both hands at the same time, which can improve the safety of the equipment operation and prevent the staff from operating with one hand and the other hand being injured by the components in the test equipment when the staff operates with one hand. The timing switch 30 is located at the position of the first pneumatic switch 291 or the second pneumatic switch 292, which is convenient for the staff to operate.

[0096] Although the present invention has been illustrated and described with reference to certain preferred embodiments of the present invention, it should be understood by those skilled in the art that the above contents are further detailed descriptions of the present invention in combination with specific embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. Those skilled in the art may make various changes in form and details, including making several simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A transient break test device, the transient break test device is used to test a sensor, the sensor comprises a body and a connector, the body comprises a head and a connecting part, the connector and the connecting part are connected through a harness, the head comprises a conductive part, and the connecting part is electrically connected to the conductive part; characterized in that: The instantaneous interruption test equipment comprises: Test bench; A fixing portion, disposed on the test bench and extending along a first direction; a driving portion connected to the fixing portion in a slidable manner along the first direction; A pressing portion, connected to the driving portion in a slidable manner along the first direction; A housing portion, the housing portion being disposed on the driving portion and located between the pressing portion and the test bench along the first direction, and being used to place the sensor, the connecting portion of the sensor being disposed facing the pressing portion, and the head portion of the sensor being disposed facing the test bench; A signal transmitting part, used to be electrically connected to the connecting part of the sensor and to send a voltage signal; The signal receiving unit is communicatively connected with the signal transmitting unit and is used for receiving the voltage signal.

2. The instantaneous interruption test device according to claim 1, characterized in that: The fixed part includes a first sliding part, and the driving part includes a second sliding part. The fixed part and the driving part are spaced apart along the second direction, the first sliding part and the second sliding part are located between the fixed part and the driving part, and the second sliding part is connected to the first sliding part in a slidable manner along the first direction.

3. The instantaneous interruption test equipment according to claim 1 or 2, characterized in that: The instantaneous interruption testing device also includes a first driving member and a driving connecting member. Along the second direction, the first driving member is arranged on the side of the fixed part facing away from the driving part, and the driving connecting member passes through the fixed part along the second direction. The first driving member is connected to the driving part through the driving connecting member, and the first driving member is used to drive the driving part to slide along the first direction.

4. The instantaneous interruption test device according to claim 3, characterized in that: The first driving member includes a first driving member body, the first driving member body is fixed to the fixed part, the first driving member body has a first sliding end, along the first direction, the first sliding end is spaced apart from the driving connecting member, the first sliding end is connected to the driving connecting member, and the first driving member body is used to drive the first sliding end and the driving connecting member to slide together along the first direction.

5. The instantaneous interruption test device according to claim 4, characterized in that: The first driving member further includes an elastic buffer portion, which is disposed between the first sliding end and the driving connecting member and abuts against the first sliding end and the driving connecting member respectively along the first direction.

6. The instantaneous interruption test device according to claim 1, characterized in that: Along the second direction, the driving part includes a third sliding part, and the clamping part includes a fourth sliding part. Along the second direction, the driving part is located between the clamping part and the fixed part, the third sliding part and the fourth sliding part are located between the clamping part and the driving part, and the fourth sliding part is connected to the third sliding part in a slidable manner along the first direction.

7. The instantaneous interruption test device according to claim 6, characterized in that: The instantaneous break testing device also includes a second driving member, which includes a second driving member body. The second driving member body is fixed to the driving part, and the second driving member body has a second sliding end, which is connected to the fourth sliding part, and the second driving member body is used to drive the second sliding end and the clamping part to slide along the first direction.

8. The instantaneous interruption test device according to claim 7, characterized in that: The clamping portion includes a clamping end, which is arranged on a side of the fourth sliding portion facing away from the third sliding portion along the second direction. The accommodating portion includes a mounting hole, which is located between the clamping end and the test bench along the first direction. Along the first direction, the clamping end and the mounting hole are arranged opposite to each other.

9. The instantaneous interruption test device according to claim 8, characterized in that: The instantaneous break test equipment also includes a detection component, which is communicatively connected to the second driving member. The detection component includes a first detection member and a second detection member. The first detection member and the second detection member are arranged in the accommodating portion, and the first detection member and the second detection member are respectively located on two opposite sides of the mounting hole, for detecting the clamping state of the main body and the mounting hole and outputting a driving signal to the second driving member.

10. The instantaneous interruption test device according to claim 8, characterized in that: The instantaneous break test device includes a marking component, which is arranged at one end of the accommodating portion in the third direction. The marking component includes a marking piece, which is slidably arranged in the accommodating portion along the third direction, and the marking piece extends through the mounting hole along the third direction, so as to mark the sensor on which the test has been completed.

11. The instantaneous interruption test device according to claim 10, characterized in that: The instantaneous break test device comprises a third driving member, the third driving member is connected to the marking member, and the third driving member is used to drive the marking member to slide along the third direction.

12. The instantaneous interruption test device according to claim 1, characterized in that: The instantaneous break test device includes a fourth driving member, and the signal emitting part includes a clamping member and a signal emitting member, the clamping member has an installation groove, and a sensor is provided in the installation groove, the sensor is communicatively connected with the fourth driving member, and the fourth driving member is connected with the signal emitting member, and is used to drive the signal emitting member to move along the second direction close to the connector, so that the connector is electrically connected to the signal emitting member.

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