CN112086315A - Intelligent electric meter based on novel pulse relay - Google Patents

Abstract

The invention relates to an intelligent ammeter based on a novel pulse relay, which comprises the novel pulse relay, wherein the novel pulse relay comprises a driving device, a static contact unit, a movable contact unit and a limiting device; the driving device is used for generating a driving signal and driving the limiting device to move or stop moving; the limiting device is used for driving the movable contact unit to be in contact with or separated from the static contact unit, and the state of contact or separation is kept unchanged when the driving signal disappears. The relay comprises the limiting device, the limiting device can limit the state between the movable contact unit and the static contact unit to be unchanged, and then the relay is not influenced by external force, so that the reliability of the switch is improved, and the structure is simple.

Description

Intelligent electric meter based on novel pulse relay

Technical Field

The invention relates to the technical field of electronic devices, in particular to an intelligent electric meter based on a novel pulse relay.

Background

The relay is an electronic control device, which has a control system (also called input loop) and a controlled system (also called output loop), and is usually applied in an automatic control circuit, and it is actually an "automatic switch" that uses a small current to control a large current, so that it plays the role of automatic regulation, safety protection, switching circuit, etc. in the circuit.

A pulse relay is a relay that is miniaturized and has low power consumption, and thus is widely used. The magnetic latching relay is a pulse relay which uses the interaction and relative movement of an electromagnetic coil and a permanent magnet to realize the connection and disconnection of a circuit under the action of a driving signal, and after the driving signal disappears, the magnetic latching relay still uses the internal permanent magnet to memorize the final action state, thereby keeping the connection or disconnection state. Currently, magnetic latching relays are widely used in smart meters.

For example, patent No. 201210486493.5 discloses a magnetic latching relay for a smart meter, which includes a contact switch and a transmission unit, wherein the transmission unit controls the contact switch via a magnet, thereby realizing the connection and disconnection of electricity for users. However, in this invention, a horizontal H-shaped transmission unit is used, which, after the relay is switched off in the excitation voltage, is subject to external forces or to the inclination angle of the meter when it is installed, which may lead to an unbalance of the transmission unit, which in turn may cause it to rotate to a position opposite to that desired, for example, leading to a malfunction.

Disclosure of Invention

The invention aims to provide an intelligent ammeter based on a novel pulse relay, the novel relay can avoid the problem of transmission failure caused by the influence of external force, and the structure is simple.

In order to achieve the above object, the embodiments of the present invention provide the following technical solutions:

the invention provides an intelligent ammeter based on a novel pulse relay, which comprises the novel pulse relay, wherein the novel pulse relay comprises a driving device, a static contact unit, a movable contact unit and a limiting device; the driving device is used for generating a driving signal and driving the limiting device to move or stop moving; the limiting device is used for driving the movable contact unit to be in contact with or separated from the static contact unit, and the state of contact or separation is kept unchanged when the driving signal disappears.

Among the above-mentioned scheme, including stop device, stop device can inject the state between movable contact unit and the stationary contact unit and keep unchangeable, does not receive external force to influence then, improves the reliability of switch, and simple structure.

As an embodiment, the limiting device includes a first limiting structure and a second limiting structure, and the first limiting structure is connected with the movable contact unit.

The limiting device comprises a first limiting structure and a second limiting structure, and the movable contact unit is contacted with or separated from the static contact unit through relative movement between the first limiting structure and the second limiting structure, so that the state change between the movable contact unit and the static contact unit can be realized, and the reliability of maintaining the state between the movable contact unit and the static contact unit unchanged can be improved.

As an embodiment, the driving device comprises a driving execution device and a driving signal generation device, wherein the driving execution device comprises a first driving execution structure and a second driving execution structure; the driving signal generating device is used for generating the driving signal; the first driving execution structure is used for driving the first limiting structure to move or stop moving, and the second driving execution structure is used for driving the second limiting structure to move or stop moving.

The driving execution device comprises a first driving execution structure and a second driving execution structure, and one driving execution structure drives one limiting structure without interference, so that more accurate control can be realized.

First drive execution structure drives first limit structure and reciprocates in vertical direction to drive the movable contact unit and the contact of static contact unit or break away from, second drive execution structure drives second limit structure and moves about the horizontal direction, so that second limit structure and first limit structure cooperate, make then movable contact unit and static contact unit keep the contact or the state that breaks away from unchangeable.

As an embodiment, the first limiting structure comprises a first base body, a protruding portion is arranged on the first base body, the second limiting structure comprises a second base body, a recessed portion is arranged on the second base body, and the protruding portion is matched with the recessed portion; or, a sunken part is arranged on the first base body, and a protruding part is arranged on the second base body.

In the above scheme, the mutual matching between the concave part and the protruding part is improved, the position fixation between the two limiting structures can be reliably limited, and then the state between the movable contact unit and the static contact unit is stable and is not influenced by external force.

Preferably, the number of the concave parts is 2-3, and the number of the convex parts is 1-2. In the scheme, the two protruding parts are matched with the two concave parts, so that the fixation of the position between the two protruding parts and the concave parts can be further enhanced.

As an embodiment, the driving signal generating device includes a first coil and a second coil, and the first limiting structure and the second limiting structure are made of magnetic materials.

As an embodiment, the second driving executing structure is a spring, and one end of the spring is connected with the second coil, and the other end of the spring is connected with the second limiting structure.

As an embodiment, the first driving executing structure comprises a spring and a spring fixing member, one end of the spring is fixed, and the other end of the spring is connected with the first limiting structure.

In the above scheme, the limiting structure is driven to move or stop moving by utilizing the elastic deformation performance of the reed or the spring, the structure is simple, and the reliability is high.

In one scheme, the first limiting structure and the movable contact unit are of an integral structure. Under this scheme, first limit structure not only is then made by magnetic conductive material. It can also be understood that the limiting device only comprises one second limiting structure, and the first limiting structure and the movable contact unit are integrally used as the movable contact unit.

Compared with the prior art, the pulse relay used by the intelligent electric meter provided by the invention comprises the limiting device, the limiting device can limit the state between the movable contact unit and the static contact unit to be unchanged, so that the intelligent electric meter is not influenced by external force, the reliability of a switch is improved, and the structure is simple.

Other technical advantages of the present invention will be set forth in the following examples.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic diagram of the pulse relay in the pull-in state in the embodiment.

Fig. 2 is a schematic diagram of the pulse relay in the disengaged state in the embodiment.

Fig. 3 is a schematic diagram illustrating a connection between a second limiting structure and a driving device according to an embodiment of the present invention.

Fig. 4 is a schematic diagram of a connection between a second limiting structure and a driving device in another structure of the embodiment.

Fig. 5 is a schematic connection diagram of the first limiting structure and the driving device in the embodiment.

Fig. 6 is a schematic diagram of the structure of the smart meter.

The labels in the figure are: 11-a reed mount; 12-a reed; 13-a movable contact unit; 14-a stationary contact unit; 15-a first coil; 16-a second coil; 17-a spring; 18-a second limit structure; 19-a first limit structure; 20-reed limit structure; 181-a second substrate; 182-a recess; 191-a first substrate; 192-projection.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The devices of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.

Please refer to fig. 6, the present embodiment provides an intelligent electric meter based on a novel pulse relay, which includes a processor, a zero line, a live line, a voltage transformer, a current transformer, and the novel pulse relay (i.e., the relay in fig. 6), wherein the incoming line and the outgoing line of the zero line, the incoming line and the outgoing line of the live line are both connected to the relay to control the coil in the novel pulse relay, the current transformer is connected in series to the incoming line end of the live line, the voltage transformer is connected in parallel to the incoming line ends of the live line and the zero line, and the voltage transformer and the current transformer are both connected to the processor, which is further connected to the relay to detect the on-off state and the off-state of the relay.

Referring to fig. 1-5, the novel pulse relay includes a driving device, a stationary contact unit 14, a movable contact unit 13 and a limiting device; the driving device is used for generating a driving signal and driving the limiting device to move or stop moving; the limiting device is used for driving the movable contact unit 13 to be in contact with or separated from the fixed contact unit 14, and the state of contact or separation is kept unchanged after the driving signal disappears. When the movable contact unit 13 is in contact with the stationary contact unit 14, a switch closing effect is achieved, and when the movable contact unit 13 is separated from the stationary contact unit 14, a switch opening effect is achieved.

Referring to fig. 1 to 5, in the present embodiment, the driving apparatus includes a driving execution apparatus and a driving signal generation apparatus, and the driving execution apparatus includes a first driving execution structure and a second driving execution structure. The limiting device comprises a first limiting structure 19 and a second limiting structure 18, the first driving execution structure is connected with the first limiting structure 19 and used for driving the first limiting structure 19 to move or stop moving, and the second driving execution structure is connected with the second limiting structure 18 and used for driving the second limiting structure 18 to move or stop moving.

The first limit structure 19 is connected with the moving contact unit 13. When the first driving execution structure drives the first limiting structure 19 to move or stop moving, the movable contact unit 13 and the fixed contact unit 14 are relatively displaced, and then two states of contact or separation are formed. The first limit structure 19 and the moving contact unit 13 may also be an integral structure, for example, as shown in fig. 5, in which case the first limit structure is made of a magnetic conductive material.

In this embodiment, the first limiting structure 19 and the second limiting structure 18 are independent structures, and the relative displacement between the movable contact unit 13 and the stationary contact unit 14 is realized by the relative movement between the first limiting structure 19 and the second limiting structure 18, so as to form a contact state or a separation state. The limiting structure has the advantages of simple structure and convenience in manufacturing. It will be readily appreciated that other embodiments of the stop arrangement are possible, for example the stop arrangement may be a unitary structure which is capable of relative displacement.

In this implementation, drive execution structure includes two, and a drive execution structure cooperatees with a limit structure and uses, and such advantage is not influenced each other, improves driven reliability, and the drive mode is simple. It will be readily appreciated that the drive actuator structure may be of other embodiments, such as a unitary structure, for example by driving the stop structure to move or stop moving at different timings.

As shown in fig. 1, the first driving executing structure comprises a spring 12 and a spring fixing member 11, wherein one end of the spring 12 is connected with the spring fixing member 11, and the other end is connected with the first limiting structure 19. The second drive actuator is a spring 17, one end of the spring 17 being fixed adjacent to the second coil 16 and the other end being connected to a second stop 18.

As shown in fig. 1, 3, 4 and 5, the first limiting structure 19 includes a first base 191, a protruding portion 192 is disposed on the first base 191, the second limiting structure 18 includes a second base 181, a recessed portion 182 is disposed on the second base 181, and the protruding portion 192 is adapted to the recessed portion 182. The number of the concave parts 182 is at least one more than that of the convex parts 192, and through the mutual matching between the convex parts 192 and different concave parts 182, the fixing at different positions between the first limiting structure 19 and the second limiting structure 18 is realized, and then the state change of the contact or the separation between the movable contact unit 13 and the fixed contact unit 14 is realized, and the position fixing of the current state is maintained, and then the external force is not influenced. Similarly, there may be at least one more protrusion 192 than one recess 182, and the first position-limiting structure 19 and the second position-limiting structure 18 are fixed at different positions by the cooperation between the recess 182 and the different protrusions 192. In this embodiment, the protruding portion 192 and the first base 191 are integrally formed, so that the manufacturing is convenient and the structural firmness is ensured.

It is easy to understand that the first base 191 may be provided with the recess 182, and the second base 181 may be provided with the protrusion 192.

As shown in fig. 3-5, the number of the recesses 182 is preferably 2-3, and the number of the protrusions 192 is preferably 1-2. As shown in fig. 1-2, when there are 3 recesses 182, there are 2 protrusions 192, and 2 protrusions 192 achieve contact or separation between the movable contact unit 13 and the stationary contact unit 14 by being engaged with different two consecutive recesses 182. When the number of the recess 182 is 2 and the number of the protrusion 192 is 1, the protrusion 192 is engaged with the different recess 182 to make the movable contact unit 13 contact with or separate from the stationary contact unit 14.

The shape of the protruding portion 192 is not limited in this embodiment, and may be, for example, a hemispherical shape as shown in fig. 5, a conical shape, or the like. The shape of the recess 182 changes and the shape of the protrusion 192 adapts to achieve the purpose of fitting to each other.

The drive signal generating means is operative to generate the drive signal. In this embodiment, the driving signal generating device includes a first coil 15 and a second coil 16, and the first limiting structure 19 and the second limiting structure 18 are made of magnetic material. Of course, the first coil 15 and the second coil 16 need to be connected with a power supply and a controller for controlling whether the coils are electrified, and the power supply supplies electric energy to the first coil 15 and the second coil 16 so as to electrify the first coil 15 and the second coil 16. The driving signal is issued by controlling the first coil 15 and the second coil 16 to be energized or de-energized.

When the second coil 16 is energized, an induced magnetic field is generated, the second limit formation 18 is attracted by the magnetic field and moves to the right (based only on the arrangement shown in fig. 1), and then disengages from the first limit formation 19, the second limit formation 18 compressing the spring 17 during movement.

When the second coil 16 is powered off, the magnetic attraction of the second coil 16 to the second limit structure 18 disappears, the restoring force of the spring 17 causes the second limit structure 18 to move leftward, so that the second limit structure 18 gradually approaches the first limit structure 19, and until the second limit structure moves to the right, the protrusion 192 in the first limit structure 19 is clamped into the recess 182 of the second limit structure 18.

When the first coil 15 is energized, an induced magnetic field is generated, the first limit structure 19 is attracted by the magnetic field to move downward (based on the arrangement shown in fig. 1 only), and since the movable contact unit 13 is connected with the first limit structure 19 and the stationary contact unit 14 is fixed adjacent to the first coil 15, the movable contact unit 13 gradually approaches the stationary contact unit 14 during the movement of the first limit structure 19. After moving to the right position, the protrusion 192 of the first limiting structure 19 is snapped into the corresponding recess 182 of the second limiting structure 18, so as to keep the state between the movable contact unit 13 and the stationary contact unit 14 unchanged. During the downward movement of the first stop 19, the leaf 12 is compressed.

When the first coil 15 is powered off, the magnetic attraction of the first coil 15 to the first limit structure 19 disappears, and the restoring force of the spring 12 causes the first limit structure 19 to move upwards, so that the movable contact unit 13 is separated from the fixed contact unit 14. In order to avoid the upward and downward swinging of the spring 12 in the vertical direction, as shown in fig. 5, a spring 12 limiting structure is arranged at a fixed position (for example, a corresponding position when the spring 12 is in a horizontal state is preferred), and when the spring 12 drives the first limiting structure 19 to move to the position of the spring 12 limiting structure, the spring 12 limiting structure blocks the first limiting structure so as not to move upwards, and therefore the spring 12 stops vibrating rapidly. At this time, the protrusion 192 in the first limit structure 19 is engaged with the corresponding recess 182 in the second limit structure 18, and then the state between the movable contact unit 13 and the stationary contact unit 14 is maintained.

Based on the principle, the sequential control of switch closing and end opening is realized as follows:

when closing: assume that the first coil 15 is set to a pulse on time of T1, the second coil 16 is set to a pulse on time of T2, and the interval time is set to T3. Firstly, controlling the time of the energization T2 of the second coil 16 to separate the second limit structure 18 from the first limit structure 19 (before closing, the first limit structure 19 and the second limit structure 18 are in a mutually matched state, and the first limit structure 19 is beneficial to moving in the vertical direction after separation); then controlling the first coil 15 to be electrified T1, so that the first limit structure 19 moves downwards, and brings the movable contact unit 13 to gradually approach the fixed contact unit 14 for a time T3; and (simultaneously) controlling the second coil 16 to be powered off for a time period T2, so that the second limit structure 18 moves leftwards to gradually approach the first limit structure 19, and after the first limit structure 19 and the second limit structure 18 move in place, the protruding portion 192 is clamped into the recessed portion 182, and the closed state is maintained, as shown in fig. 1.

When off, it is assumed that the first coil 15 is set to a pulse on time of T4, the second coil 16 is set to a pulse on time of T5, and the interval time is set to T6. Firstly, controlling the electrifying time T5 of the second coil 16 to make the second limit structure 18 separate from the first limit structure 19; then the first coil 15 is powered off and lasts for T4 time, so that the first limit structure 19 can move upwards, and further the movable contact unit 13 is driven to be gradually separated from the fixed contact unit 14; and controlling the second coil 16 to be powered off for a time period T6, so that the second limit structure 18 moves leftwards to gradually approach the first limit structure 19, and after the first limit structure 19 and the second limit structure 18 move to the right, the protruding part 192 is clamped into the recessed part 182, and the off state is maintained, as shown in fig. 2.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. The intelligent ammeter based on the novel pulse relay is characterized by comprising the novel pulse relay, wherein the novel pulse relay comprises a driving device, a static contact unit, a movable contact unit and a limiting device; the driving device is used for generating a driving signal and driving the limiting device to move or stop moving; the limiting device is used for driving the movable contact unit to be in contact with or separated from the static contact unit, and the state of contact or separation is kept unchanged when the driving signal disappears.

2. The smart meter based on the novel pulse relay as claimed in claim 1, wherein the limiting device comprises a first limiting structure and a second limiting structure, and the first limiting structure is connected with the movable contact unit.

3. The smart electric meter based on the novel pulse relay as claimed in claim 2, wherein the driving device comprises a driving execution device and a driving signal generation device, and the driving execution device comprises a first driving execution structure and a second driving execution structure; the driving signal generating device is used for generating the driving signal; the first driving execution structure is used for driving the first limiting structure to move or stop moving, and the second driving execution structure is used for driving the second limiting structure to move or stop moving.

4. The smart electric meter based on the novel pulse relay is characterized in that the first driving execution structure drives the first limit structure to move up and down in the vertical direction to drive the movable contact unit to be in contact with or separated from the static contact unit, and the second driving execution structure drives the second limit structure to move left and right in the horizontal direction to enable the second limit structure to be matched with the first limit structure, so that the state of the movable contact unit and the static contact unit in contact with or separated from each other is unchanged.

5. The smart electric meter based on the novel pulse relay as claimed in claim 4, wherein the first limit structure comprises a first base body, a protruding portion is arranged on the first base body, the second limit structure comprises a second base body, a recessed portion is arranged on the second base body, and the protruding portion is matched with the recessed portion; or, a sunken part is arranged on the first base body, and a protruding part is arranged on the second base body.

6. The smart meter based on the novel pulse relay as claimed in claim 5, wherein the number of the concave portions is 2-3, and the number of the convex portions is 1-2.

7. The smart electric meter based on the novel pulse relay as claimed in claim 3, wherein the driving signal generating device comprises a first coil and a second coil, and the first limiting structure and the second limiting structure are made of magnetic materials.

8. The smart electric meter based on the novel pulse relay as claimed in claim 3, wherein the second driving execution structure is a spring, one end of the spring is fixed, and the other end of the spring is connected with the second limit structure.

9. The smart electric meter based on the novel pulse relay is characterized in that the first driving execution structure comprises a reed and a reed fixing member, one end of the reed is connected with the reed fixing member, and the other end of the reed is connected with the first limiting structure.

10. The smart meter based on the novel pulse relay as claimed in claim 2, wherein the first limit structure and the movable contact unit are of an integral structure.

Images