Time measurement devices and systems

Abstract

The present invention provides a time measurement device and system, relating to the technical field of electrical engineering. The device comprises a relay structure, an accident sequence recorder, and a power supply circuit. The relay structure is connected in series to the power supply circuit. The accident sequence recorder is provided with a detection terminal electrically connected to the relay structure. The relay structure is used to control the conduction and disconnection of the power supply circuit according to the power-on / off state. The accident sequence recorder is used to monitor the power-on / off state of the relay structure through the detection terminal and measure the time interval between the switching states. The present invention has the advantages of being small and easy to transport, and can significantly improve the accuracy of measuring the operation time of relay contacts.

Description

Technical Field

[0001] The present invention relates to the field of electrical engineering technology, and in particular to a time measurement device and system. Background Art

[0002] The contact operation time of a relay refers to the time it takes for the relay's contacts to switch from closing / opening to opening / closing. Currently, related technologies propose using a time interval meter to measure relay contact operation time. However, time interval meters are bulky and require no significant vibration or impact during transport, making them difficult to transport. Furthermore, time interval meters have high requirements for the operating environment's temperature and humidity. Operating in environments that do not meet these requirements can easily lead to instrument failure and reduce measurement accuracy, resulting in low accuracy in measuring relay contact operation time. Summary of the Invention

[0003] In view of this, an object of the present invention is to provide a time measurement device and system, which has the advantages of being small in size and easy to transport, and can significantly improve the accuracy of measuring the action time of relay contacts.

[0004] In a first aspect, an embodiment of the present invention provides a time measurement device, comprising: a relay structure, an accident sequence recorder and a power supply circuit, wherein the relay structure is connected in series to the power supply circuit, and the accident sequence recorder is provided with a detection end, which is electrically connected to the relay structure; wherein the relay structure is used to control the conduction and disconnection of the power supply circuit according to the power gain and loss state; the accident sequence recorder is used to monitor the power gain and loss state of the relay structure through the detection end, and measure the switching time interval of the power gain and loss state.

[0005] In one embodiment, the detection end includes a first contact and a second contact, the relay structure includes a relay to be tested and a switch structure, and the relay to be tested is electrically connected to the switch structure; wherein the switch structure is used to control the relay to be tested to lose power in the disconnected state, and the relay to be tested is connected to the first contact; the relay to be tested is also used to control the power supply circuit to be disconnected in the de-powered state; the switch structure is used to control the relay to be tested to be energized in the connected state, and the relay to be tested is connected to the second contact; the relay to be tested is also used to control the power supply circuit to be turned on in the energized state; the accident sequence recorder is also used to measure the switching time interval of the relay to be tested from the de-powered state to the energized state.

[0006] In one embodiment, the detection end also includes a third contact, and the switch structure is connected to the third contact when it is in the on state; wherein the accident sequence recorder is also used to determine that the power circuit is turned on when it monitors that the third contact is connected to the switch structure, and to determine that the power circuit is disconnected when it does not monitor that the third contact is connected to the switch structure.

[0007] In one embodiment, the relay to be tested includes a coil and a relay base, wherein the coil is arranged on the relay base; wherein the relay base is used to connect the coil in series to a power supply circuit.

[0008] In one embodiment, the relay under test includes a moving contact and a stationary contact; wherein the primary side of the moving contact is connected to the coil, and the secondary side of the moving contact is connected to the stationary contact, for switching the internal connection direction of the relay under test.

[0009] In one embodiment, the stationary contact includes a normally closed contact and a normally open contact, the normally closed contact is connected to the first contact, and the normally open contact is connected to the second contact.

[0010] In one embodiment, the relay to be tested further includes a first armature, one end of which is connected to the secondary side of the moving contact; wherein the first armature is used to connect to the normally closed contact when the coil is in a de-energized state, and is also used to connect to the normally open contact when the coil is in a energized state.

[0011] In one embodiment, the switch structure includes a second armature and a button, wherein the second armature of the switch structure is connected to the bottom end of the button, and the second armature is used to connect to the power circuit when the button is in a pressed state, and is also used to disconnect from the power circuit when the button is in a lifted state.

[0012] In one embodiment, the switch structure further includes a spring, wherein the spring is connected to the bottom end of the second armature and is used to restore the button from a pressed state to a lifted state.

[0013] In a second aspect, an embodiment of the present invention further provides a contact action time measurement system, comprising the time measurement device according to any one of the first aspects above, and a shell disposed outside the time measurement device.

[0014] The embodiments of the present invention bring the following beneficial effects:

[0015] An embodiment of the present invention provides a time measurement device and system, comprising a relay structure, an accident sequence recorder, and a power circuit. The relay structure is connected in series to the power circuit. The accident sequence recorder is provided with a detection terminal electrically connected to the relay structure. The relay structure is used to control the on / off state of the power circuit according to the power on / off state. The accident sequence recorder is used to monitor the power on / off state of the relay structure through the detection terminal and measure the switching time interval between the power on / off states. The device uses the on / off state of the power circuit to represent the power on / off state of the relay. The accident sequence recorder receives the power on / off information of the relay through the detection terminal. The accident sequence recorder analyzes the received power on / off information to obtain the contact operation time of the relay. Thus, the device for measuring the contact operation time of the relay is simplified through a simple electrical circuit, significantly improving the anti-interference ability and portability of the time measurement device, overcoming the influence of the working environment on the contact time measurement, reducing the difficulty of transporting the device, and thus improving the poor portability of the relay contact time measurement device.

[0016] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or understood by practicing the present invention. The purposes and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description, claims and drawings.

[0017] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 A schematic structural diagram of a time measurement device provided by an embodiment of the present invention;

[0020] Figure 2 A schematic structural diagram of another time measurement device provided by an embodiment of the present invention;

[0021] Figure 3 A schematic structural diagram of a relay provided in an embodiment of the present invention;

[0022] Figure 4 A schematic structural diagram of a key provided by an embodiment of the present invention;

[0023] Figure 5 A schematic diagram of the working principle of a time measurement device provided by an embodiment of the present invention;

[0024] Figure 6 A schematic diagram of the structure of a time measurement system provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0026] At present, the relevant technology uses a time interval measuring instrument as a time measuring device to measure the contact action time of the relay to be measured. However, the time interval measuring instrument is large in size and is prohibited from vibrating and bumping significantly during transportation, so it is difficult to transport. In addition, the time interval measuring instrument has high instrument precision and has high requirements for the temperature and humidity of the working environment and storage environment. When the working environment is poor, it is easy to cause instrument failure and reduced accuracy. Based on this, the present invention provides a time measurement device and system, which has the advantages of small size and easy transportation, and can significantly improve the accuracy of measuring the contact action time of the relay.

[0027] To facilitate understanding of this embodiment, a time measurement device disclosed in an embodiment of the present invention is first introduced in detail.

[0028] The present invention provides a time measurement device, which includes a relay structure, an accident sequence recorder and a power supply circuit. The relay structure is connected in series to the power supply circuit. The accident sequence recorder is provided with a detection end, which is electrically connected to the relay structure. The relay structure is used to control the conduction and disconnection of the power supply circuit according to the power gain and loss state. The accident sequence recorder is used to monitor the power gain and loss state of the relay structure through the detection end and measure the switching time interval of the power gain and loss state.

[0029] For ease of understanding, Figure 1 A schematic diagram of the structure of a time measurement device is shown. Figure 1 As shown, the time measurement device includes a relay structure, an accident sequence recorder, and a power circuit. In one embodiment, the relay structure is connected in series to the power circuit, and the relay structure controls the opening / closing of the power circuit. The connection status within the relay structure is changed according to the opening / closing of the power circuit (for example, the connection status of the static contacts within the relay to be measured when the power circuit is opened / closed). Figure 1 It also schematically shows that the relay structure is connected to the accident sequence recorder, and the accident sequence recorder receives the electrical signal generated by the relay structure and analyzes the received electrical signal.

[0030] The relay structure is used to control the conduction and disconnection of the power supply circuit according to the power-on and power-off states. In one embodiment, the relay structure includes a switch structure and a relay to be tested. When the switch structure is closed, the relay to be tested is in the power-on state and the power supply circuit is connected. When the switch structure is disconnected, the relay to be tested is in the power-off state and the power supply circuit is disconnected.

[0031] The accident sequence recorder is used to monitor the power-on / off state of a relay structure through a detection terminal and measure the time interval between these switching states. In one embodiment, the accident sequence recorder receives 0 / 1 digital signals transmitted by the switch structure and the relay under test, respectively, through the detection terminal. The detection terminal analyzes the digital signals to determine the power circuit state and calculate the switching time between the power-on / off state of the relay under test. In a specific implementation, the accident sequence recorder's detection terminal is equipped with multiple interfaces that can simultaneously receive multiple digital signals, and the accident sequence recorder's internal processor performs digital signal analysis.

[0032] The above-mentioned time measurement device and system provided by the embodiment of the present invention use the conduction / disconnection of the power supply circuit to represent the power on / off of the relay to be tested, and the accident sequence recorder receives the power on / off information of the relay to be tested through the detection end, so that the accident sequence recorder analyzes the received power on / off information to obtain the contact action time of the relay to be tested, thereby simplifying the measurement device for measuring the contact action time of the relay to be tested through a simple electrical circuit, significantly improving the anti-interference ability and portability of the time measurement device, overcoming the influence of the working environment on the contact time measurement, reducing the difficulty of transporting the device, and thus improving the problem of poor portability of the contact time measurement device of the relay to be tested.

[0033] To facilitate understanding of the time measurement device provided in the above embodiment, the embodiment of the present invention further provides a specific structure of a time measurement device, see Figure 2 The structural diagram of another time measuring device shown in FIG. Figure 2The diagram shows that the detection end of the accident sequence recorder includes a first contact and a second contact, the relay structure includes a relay to be tested and a switch structure, the relay to be tested is electrically connected to the switch structure, the switch structure is used to control the relay to be tested to lose power in the disconnected state, and the relay to be tested is connected to the first contact; the relay to be tested is also used to control the power supply circuit to be disconnected in the de-energized state; the switch structure is used to control the relay to be tested to be energized in the connected state, and the relay to be tested is connected to the second contact; the relay to be tested is also used to control the power supply circuit to be turned on in the energized state; the accident sequence recorder is also used to measure the switching time interval of the relay to be tested from the de-energized state to the energized state.

[0034] In one embodiment, the switch structure controls the connection / disconnection of the power supply circuit to switch the energized / de-energized state of the relay to be tested, so that the relay to be tested switches the internal connection mode, thereby changing the electrical signal of the detection end of the accident sequence recorder (for example, the digital signal transmitted by the detection end of the accident sequence recorder when the circuit is connected is "1", and the digital signal transmitted when the circuit is disconnected is "0"). The accident sequence recorder records the signal change time of the detection end, determines the switching time interval of the relay from the energized state to the dotted state, and determines the switching time interval of the relay from the energized state to the dotted state as the contact action time of the relay to be tested.

[0035] Please continue reading Figure 2 The detection end also includes a third contact, and the switch structure is connected to the third contact when in the on state. The accident sequence recorder is further configured to determine that the power circuit is on when the third contact is detected to be connected to the switch structure, and to determine that the power circuit is off when the third contact is not detected to be connected to the switch structure. In one embodiment, the accident sequence recorder can determine the circuit state of the power circuit based on the digital signal fed back by the third contact. When the circuit is determined to be normal, the operation time of the relay contact from the disconnected state to the connected state is calculated based on the time cursor interval between the state changes of the circuits located between the first contact and the second contact of the accident sequence recorder. In addition, the digital signal fed back by the third contact is consistent with the digital signal fed back by the second contact connected to the normally open contact. Therefore, the digital signals fed back by the three detection ends, namely, the first contact, the second contact, and the third contact, can be combined to calculate the contact operation time of the relay under test. The contact operation time of the relay calculated based on the digital signals fed back by the three detection ends, namely, the first contact, the second contact, and the third contact, is the same as the contact operation time of the relay calculated based on the digital signals fed back by the second contact and the third contact.

[0036] Please continue to see Figure 3 , Figure 3It also illustrates that the relay to be tested specifically includes a static contact, a moving contact, a coil, and a relay base, wherein the static contact includes a normally closed contact and a normally open contact, the normally closed contact being connected to the first contact, and the normally open contact being connected to the second contact; the moving contact includes a primary side of the moving contact, a secondary side of the moving contact, and a first armature, one end of the first armature being connected to the secondary side of the moving contact; the relay coil is disposed on the relay base, and the relay base is used to connect the coil in series to the power supply circuit. In one embodiment, the normally closed contact is connected to the first contact of the detection end of the accident sequence recorder, and is used to control the circuit path of the first contact of the detection end of the accident sequence recorder when connected to the first armature on the secondary side of the moving contact; the normally open contact is connected to the second contact of the detection end of the accident sequence recorder, and is used to control the circuit path of the second contact of the detection end of the accident sequence recorder when connected to the first armature on the secondary side of the moving contact.

[0037] The primary side of the moving contact is connected to the coil, and the secondary side of the moving contact is connected to the static contact, which is used to switch the internal connection direction of the relay under test. In one embodiment, the primary side of the moving contact is used to fix the moving contact so that the armature on the secondary side of the moving contact is at the same horizontal position and is at equal distances from the normally closed contact and the normally open contact.

[0038] The first armature is configured to connect to the normally closed contact when the coil is de-energized, and to connect to the normally open contact when the coil is energized. In one embodiment, the magnetism generated by the coil when energized attracts the armature in the movable contact. When de-energized, the magnetism is lost, removing the attraction to the armature. This allows the swing direction of the armature in the electromagnet under test to be controlled by controlling the energization and de-energization of the power circuit.

[0039] Regarding the switch structure provided in the above embodiment, the embodiment of the present invention further provides the following Figure 4 A schematic diagram of a switch structure is shown in FIG. Figure 4 The switch structure is shown to specifically include a button, a second armature and a spring.

[0040] Exemplarily, the second armature of the switch structure is connected to the bottom end of the button. The second armature is configured to connect to the power circuit when the button is pressed and to disconnect from the power circuit when the button is released. In one embodiment, the second armature of the switch structure is a conductive metal sheet. The second armature is moved by the pressure of the button. When the button is lowered, the armature of the switch structure is connected to the power circuit, thereby energizing the power circuit. When the button is released, the armature of the switch structure is disconnected from the power circuit, thereby de-energizing the power circuit.

[0041] Please continue reading Figure 4 , Figure 4It is also shown that the spring is connected to the bottom end of the second armature, which is used to restore the button from a pressed state to a lifted state so that the next measurement can be performed. In one embodiment, the switch structure can be a push button switch, a toggle switch, a rocker switch, etc. When selecting a push button switch, a spring needs to be added to the bottom of the armature to help reset the switch structure. When using switches such as wave switches and rocker switches, the spring is used to stabilize the position of the switch after toggling.

[0042] In addition, the embodiment of the present invention also provides Figure 5 The working principle diagram of a time measuring device shown in FIG. Figure 5 The diagram shows a switch structure that controls the on / off state of a power circuit, and feeds back the electrical signal generated during the on / off process of the power circuit to the accident sequence recorder through the third contact for processing, thereby determining the on-state of the power circuit. Based on the on / off state of the power circuit, the relay under test changes the connection between the moving contact and the static contact, and feeds back the electrical signal to the accident sequence recorder through the second contact and the third contact for processing. The accident sequence recorder determines the contact action time of the relay under test based on the electrical signal fed back from the second contact and the third contact.

[0043] The above-mentioned time measurement device provided by the embodiment of the present invention can accurately measure the contact action time of the relay to be tested, regardless of whether it needs to be transported over long distances or works in a place with a poor environment. The measurement accuracy of the device will not be affected by the working environment, so that the safety and convenience of the time measurement device are significantly improved.

[0044] For the time measurement device provided in the above embodiment, the present invention also provides a time measurement system, see Figure 6 The structure diagram of a time measurement system shown in FIG. 1 includes the time measurement device 100 provided in the aforementioned embodiment and a shell 200 outside the time measurement device. The time measurement device 100 is arranged in the shell 200 outside the time measurement device.

[0045] The above-mentioned time measurement device and system provided by the embodiment of the present invention use the conduction / disconnection of the power supply circuit to represent the power on / off of the relay to be tested, and the accident sequence recorder receives the power on / off information of the relay to be tested through the detection end, so that the accident sequence recorder analyzes the received power on / off information to obtain the contact action time of the relay to be tested, thereby simplifying the measurement device for measuring the contact action time of the relay to be tested through a simple electrical circuit, significantly improving the anti-interference ability and portability of the time measurement device, overcoming the influence of the working environment on the contact time measurement, reducing the difficulty of transporting the device, and thus improving the problem of poor portability of the contact time measurement device of the relay to be tested.

[0046] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working process of the time measurement system described above can refer to the corresponding process in the aforementioned embodiment and will not be repeated here.

[0047] In the description of the embodiments of the present invention, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0048] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A time measuring device, characterized in that: include: A relay structure, an accident sequence recorder and a power supply circuit, wherein the relay structure is connected in series to the power supply circuit, the accident sequence recorder is provided with a detection terminal, and the detection terminal is electrically connected to the relay structure; wherein, The relay structure is used to control the on and off of the power circuit according to the power-on and power-off status; The accident sequence recorder is used to monitor the power gain and loss status of the relay structure through the detection end; The detection end includes a first contact and a second contact, the relay structure includes a relay to be tested and a switch structure, the relay to be tested is electrically connected to the switch structure; the switch structure is used to control the relay to be tested to lose power in the disconnected state, and the relay to be tested is connected to the first contact; the relay to be tested is also used to control the power supply circuit to be disconnected in the de-energized state; the switch structure is used to control the relay to be tested to be energized in the connected state, and the relay to be tested is connected to the second contact; the relay to be tested is also used to control the power supply circuit to be conductive in the energized state; Among them, the switch structure controls the connection / disconnection of the power supply circuit to switch the energized / de-energized state of the relay under test, so that the relay under test switches the internal connection mode, thereby changing the electrical signal at the detection end of the accident sequence recorder. The accident sequence recorder records the signal change time of the detection end, determines the switching time interval of the relay under test from the energized state to the de-energized state, and determines the switching time interval of the relay under test from the energized state to the de-energized state as the contact action time of the relay under test.

2. The time measuring device according to claim 1, characterized in that The detection end further includes a third contact, and the switch structure is connected to the third contact when in the on state; wherein, The accident sequence recorder is further configured to determine that the power circuit is connected when the third contact is detected to be connected to the switch structure, and to determine that the power circuit is disconnected when the third contact is detected not to be connected to the switch structure.

3. The time measuring device according to claim 1, characterized in that The relay to be tested includes a coil and a relay base, and the coil is arranged on the relay base; wherein, The relay base is used to connect the coil in series to the power supply circuit.

4. The time measuring device according to claim 3, characterized in that The relay to be tested includes a moving contact and a static contact; wherein, The primary side of the moving contact is connected to the coil, and the secondary side of the moving contact is connected to the static contact, for switching the internal connection direction of the relay to be tested.

5. The time measuring device according to claim 4, characterized in that The static contact includes a normally closed contact and a normally open contact, the normally closed contact is connected to the first contact, and the normally open contact is connected to the second contact.

6. The time measuring device according to claim 5, characterized in that The relay to be tested further includes a first armature, one end of which is connected to the secondary side of the moving contact; wherein, The first armature is used to connect to the normally closed contact when the coil is in a de-energized state, and is also used to connect to the normally open contact when the coil is in a energized state.

7. The time measuring device according to claim 1, characterized in that The switch structure includes a second armature and a button, wherein: The second armature of the switch structure is connected to the bottom end of the button. The second armature is used to connect to the power circuit when the button is in a pressed state, and is also used to disconnect from the power circuit when the button is in a lifted state.

8. The time measuring device according to claim 7, characterized in that The switch structure further includes a spring, wherein The spring is connected to the bottom end of the second armature and is used to restore the button from a pressed state to a lifted state.

9. A contact action time measurement system, characterized in that: The invention comprises the time measuring device according to any one of claims 1 to 8, and a shell arranged outside the time measuring device.

Images