CN109300737B - Electromagnetic relay device and control method thereof - Google Patents
Electromagnetic relay device and control method thereof Download PDFInfo
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- CN109300737B CN109300737B CN201710609796.4A CN201710609796A CN109300737B CN 109300737 B CN109300737 B CN 109300737B CN 201710609796 A CN201710609796 A CN 201710609796A CN 109300737 B CN109300737 B CN 109300737B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
- H01H47/001—Functional circuits, e.g. logic, sequencing, interlocking circuits
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Abstract
The invention discloses an electromagnetic relay device and a control method thereof, wherein a control circuit respectively provides driving power to two electromagnetic relay units adjacent to each other, so that after the two electromagnetic relay units are respectively connected, a first maintaining power and a second maintaining power which are smaller than the driving power are respectively provided to the two electromagnetic relay units, the two electromagnetic relay units are respectively kept in a connected state, when the electromagnetic relay unit receiving the second maintaining power trips due to environmental factors, the electromagnetic relay unit receiving the second maintaining power generates a tripping feedback signal to the control circuit, so that the control circuit increases the first maintaining power according to the tripping feedback signal, wherein the second maintaining power is smaller than or equal to the first maintaining power, and the technical effect of improving the reliability of the electromagnetic relay unit receiving the first maintaining power is achieved.
Description
Technical Field
The present invention relates to a relay device and a control method thereof, and more particularly to an electromagnetic relay device and a control method thereof.
Background
The control circuit of the electromagnetic relay unit of the prior art turns on the electromagnetic relay unit by supplying sufficient driving power to the electromagnetic relay unit, and in order to keep the electromagnetic relay unit in the on state, the control method of the conventional control circuit is to continuously supply power for turning on the driving electromagnetic relay unit to the electromagnetic relay unit. However, the control method of the conventional control circuit is very power consuming.
In view of this, manufacturers propose a control circuit of an electromagnetic relay unit to provide a maintaining power smaller than a driving power to the electromagnetic relay unit after the electromagnetic relay unit is turned on, so that the electromagnetic relay unit is kept in an on state, thereby saving power loss. However, since the electromagnetic relay unit is susceptible to a change in the environment and the physical control characteristics thereof are affected, there is a problem that it is difficult for the control circuit of the electromagnetic relay unit to control the electromagnetic relay unit more appropriately in accordance with the change in the environment.
In summary, it is known that in the prior art, there has been a problem that a control circuit of an electromagnetic relay unit is difficult to properly control the electromagnetic relay unit according to an environmental change of the electromagnetic relay unit, and thus reliability of the electromagnetic relay unit is not good.
Disclosure of Invention
The invention discloses an electromagnetic relay device and a control method thereof.
First, the present invention discloses an electromagnetic relay device, including: two electromagnetic relay units and a control circuit. The two electromagnetic relay units are of the same type and are adjacent to each other; the control circuit is connected with the two electromagnetic relay units. The control circuit is used for respectively providing driving power to the two electromagnetic relay units so that after the two electromagnetic relay units are respectively switched on, respectively providing first maintaining power and second maintaining power to the two electromagnetic relay units so that the two electromagnetic relay units respectively maintain a switching-on state, wherein the driving power is greater than the first maintaining power and the second maintaining power, and the second maintaining power is smaller than or equal to the first maintaining power. When the electromagnetic relay unit receiving the second maintenance power trips due to environmental factors, the electromagnetic relay unit receiving the second maintenance power generates a tripping feedback signal to the control circuit, so that the control circuit increases the first maintenance power according to the tripping feedback signal.
In addition, the present invention discloses an electromagnetic relay apparatus control method, including the steps of: providing an electromagnetic relay device which comprises two electromagnetic relay units and a control circuit, wherein the two electromagnetic relay units are of the same type and are adjacent to each other, and the control circuit is connected with the two electromagnetic relay units; driving power is respectively provided for the two electromagnetic relay units through the control circuit so as to respectively switch on the two electromagnetic relay units; respectively providing a first maintenance power and a second maintenance power to the two electromagnetic relay units through the control circuit to enable the electromagnetic relay units to respectively maintain a connection state, wherein the driving power is greater than the first maintenance power and the second maintenance power, and the second maintenance power is less than or equal to the first maintenance power; and when the electromagnetic relay unit receiving the second maintenance power trips due to environmental factors, the electromagnetic relay unit receiving the second maintenance power generates a tripping feedback signal to the control circuit, so that the control circuit increases the first maintenance power according to the tripping feedback signal.
The system and the method disclosed by the invention are different from the prior art in that the driving power is respectively provided to two electromagnetic relay units adjacent to each other through the control circuit, so that after the two electromagnetic relay units are respectively connected, a first maintenance power and a second maintenance power which are smaller than the driving power are respectively provided to the two electromagnetic relay units, the two electromagnetic relay units are respectively kept in a connected state, when the electromagnetic relay unit receiving the second maintenance power trips due to environmental factors, the electromagnetic relay unit receiving the second maintenance power generates a tripping feedback signal to the control circuit, so that the control circuit increases the first maintenance power according to the tripping feedback signal, wherein the second maintenance power is smaller than or equal to the first maintenance power.
Through the technical means, the invention can achieve the technical effect of improving the reliability of the electromagnetic relay unit for receiving the first maintenance power.
Drawings
Fig. 1 is a schematic circuit diagram of an embodiment of an electromagnetic relay device according to the present invention.
Fig. 2 is a schematic circuit diagram of another embodiment of the electromagnetic relay device according to the present invention.
Fig. 3 is a flowchart of a method of an embodiment of a control method of an electromagnetic relay device according to the present invention.
Description of the symbols:
10 sound sensing unit
20 current sensing unit
30 magnetic field sensing unit
50. 52 electromagnetic relay unit
60 control circuit
70 attitude sensing unit
80 temperature sensing unit
90 load
100 electromagnetic relay device
Detailed Description
The following detailed description of the embodiments of the present invention will be provided in conjunction with the accompanying drawings and examples, so that how to implement the technical means for solving the technical problems and achieving the technical effects of the present invention can be fully understood and implemented.
Referring to fig. 1, fig. 1 is a schematic circuit diagram of an electromagnetic relay device 100 according to an embodiment of the present invention, including: electromagnetic relay unit 50, electromagnetic relay unit 52 and control circuit 60. The electromagnetic relay unit 50 and the electromagnetic relay unit 52 are of the same model and are adjacent to each other, and the control circuit 60 is connected with the electromagnetic relay unit 50 and the electromagnetic relay unit 52. In the present embodiment, the electromagnetic relay unit 50 and the electromagnetic relay unit 52 are connected in parallel to each other and connected to the control circuit 60, and more specifically, one end of the electromagnetic relay unit 50 is connected to the control circuit 60, the other end of the electromagnetic relay unit 50 is connected to the load 90, both ends of the electromagnetic relay unit 52 are connected to the control circuit 60, and the electromagnetic relay unit 50 and the electromagnetic relay unit 52 are connected in parallel to each other.
In this embodiment, the number of the electromagnetic relay units may be, but is not limited to, two, and may be adjusted according to actual requirements. It should be noted that the electromagnetic relay device 100 at least includes two electromagnetic relay units, at least one of the electromagnetic relay units is used for transmitting trip feedback signals, and the other electromagnetic relay units are used for connecting to a load, and detailed description will be provided later.
The control circuit 60 is configured to provide driving power to the electromagnetic relay unit 50 and the electromagnetic relay unit 52, respectively, so as to enable the electromagnetic relay unit 50 and the electromagnetic relay unit 52 to be connected respectively. Then, the control circuit 60 provides the first maintenance power to the electromagnetic relay unit 50, and provides the second maintenance power to the electromagnetic relay unit 52, so that the electromagnetic relay unit 50 and the electromagnetic relay unit 52 maintain the on state respectively, wherein the driving power is greater than the first maintenance power and the second maintenance power, and the second maintenance power is less than or equal to the first maintenance power. In the present embodiment, since the electromagnetic relay unit 50 and the electromagnetic relay unit 52 are connected in parallel with each other and the control circuit 60 is connected, the second maintenance power is equal to the first maintenance power.
When the electromagnetic relay unit 52 receiving the second sustain power trips due to environmental factors, the electromagnetic relay unit 52 receiving the second sustain power generates a trip feedback signal to the control circuit 60, so that the control circuit 60 increases the first sustain power according to the trip feedback signal. The trip feedback signal may be an interrupt signal (interrupt signal) or a polling signal (polling signal), and more specifically, when the control circuit 60 periodically detects whether the electromagnetic relay unit 52 generates the trip feedback signal, the trip feedback signal may be a polling signal, wherein the period may be, but is not limited to, 1 millisecond (ms); when the control circuit 60 does not continuously detect whether the electromagnetic relay unit 52 generates the trip feedback signal (i.e. the control circuit 60 passively notifies the electromagnetic relay unit 52 to generate the trip feedback signal), the trip feedback signal may be an interrupt signal. The environmental factor may be, but is not limited to, vibration, and may be adjusted according to actual requirements, for example: the environmental factor may be an electromagnetic field or temperature.
In this embodiment, since the second sustain power is equal to the first sustain power, so that the electromagnetic relay unit 52 receiving the second sustain power trips due to environmental factors, and the electromagnetic relay unit 50 receiving the first sustain power trips due to environmental factors, the control circuit 60 in this embodiment adjusting the first sustain power according to the trip feedback signal means that after the electromagnetic relay unit 50 and the electromagnetic relay unit 52 trip due to environmental factors, the control circuit 60 drives the electromagnetic relay unit 50 and the electromagnetic relay unit 52 to be respectively turned on again, and then the control circuit 60 adjusts the previous first sustain power/second sustain power according to the trip feedback signal to make the electromagnetic relay unit 50 and the electromagnetic relay unit 52 respectively maintain the on state, so as to prevent the electromagnetic relay unit 50 and the electromagnetic relay unit 52 from tripping due to the same environmental factors, thereby improving the reliability of the electromagnetic relay unit (the electromagnetic relay unit connected to the load) that receives the first maintenance power.
In the present embodiment, the electromagnetic relay units 50 and 52 may be, but are not limited to, direct current electromagnetic relay units. When the electromagnetic relay units 50 and 52 are dc electromagnetic relay units, the control circuit 60 may first provide a dc driving Voltage to the electromagnetic relay units 50 and 52, respectively, to provide sufficient driving power to drive the electromagnetic relay units 50 and 52, so as to respectively connect the electromagnetic relay units 50 and 52, wherein the Voltage value of the dc driving Voltage may be, but not limited to, 8 volts (V), and the Voltage value of the dc driving Voltage may be different according to different types of dc electromagnetic relay units. Since the electromagnetic relay unit is turned on, the on state can be maintained only with a certain maintenance power (smaller than the driving power), and therefore, in order to avoid power loss, after the electromagnetic relay unit 50 and the electromagnetic relay unit 52 are turned on, the control circuit 60 can provide the first maintenance power and the second maintenance power, which are smaller than the driving power, to the electromagnetic relay unit 50 and the electromagnetic relay unit 52, respectively, so that the electromagnetic relay unit 50 and the electromagnetic relay unit 52 are maintained in the on state, respectively. The control circuit 60 may provide the first sustain power and the second sustain power in a step voltage modulation (PWM) mode or a Pulse Width Modulation (PWM) mode.
When the control circuit 60 provides the first sustain power and the second sustain power in the step-down voltage regulation mode, the control circuit 60 divides the original dc driving voltage into a plurality of stages to reduce the voltage value in a step-down manner, and maintains the voltage value for a certain time at each reduction stage until the voltage value can provide the first sustain power and the second sustain power, so that the electromagnetic relay unit 50 and the electromagnetic relay unit 52 maintain the on state respectively.
When the control circuit 60 provides the first sustain power and the second sustain power through the PWM mode, the control circuit 60 provides the first sustain power and the second sustain power to the electromagnetic relay unit 50 and the electromagnetic relay unit 52 through the PWM signal, so that the electromagnetic relay unit 50 and the electromagnetic relay unit 52 maintain the on state respectively. In the present embodiment, the average voltage value of the PWM signal may be, but not limited to, 2V, the duty cycle may be, but not limited to, 25%, and the frequency may be, but not limited to, 20 kilohertz (KHz).
In addition, since the attitude of the electromagnetic relay device 100 is different, so that the influence of gravity on the electromagnetic relay device 100 caused by environmental factors is different, the electromagnetic relay device 100 may further include an attitude sensing unit 70 connected to the control circuit 60 for sensing the attitude of the electromagnetic relay device 100, and when the attitude sensing unit 70 senses a change in the attitude of the electromagnetic relay device 100, an attitude feedback signal is output to the control circuit 60, so that the control circuit 60 adjusts the first sustain power and the second sustain power according to the attitude feedback signal. When the gravity influence is added to the attitude of the electromagnetic relay device 100, the control circuit 60 increases the first maintenance power and the second maintenance power; when the attitude of the electromagnetic relay apparatus 100 reduces the influence of gravity, the control circuit 60 reduces the first maintenance power and the second maintenance power, thereby adjusting the sensing threshold value of the electromagnetic relay unit 52 that receives the second maintenance power (the magnitude of the second maintenance power is positively correlated with the magnitude of the sensing threshold value), and increasing the reliability of the electromagnetic relay unit 50 that receives the first maintenance power (the electromagnetic relay unit connected to the load).
Furthermore, since the temperature may affect the coil characteristic of the electromagnetic relay unit, the electromagnetic relay device 100 may also include a temperature sensing unit 80 connected to the control circuit 60 for sensing the temperature of the electromagnetic relay device 100, and when the temperature sensing unit 80 senses a change in the temperature of the electromagnetic relay device 100, the temperature sensing unit outputs a temperature feedback signal to the control circuit 60, so that the control circuit 60 adjusts the first sustaining power and the second sustaining power according to the temperature feedback signal. When the temperature of the electromagnetic relay apparatus 100 increases, the control circuit 60 increases the first maintenance power and the second maintenance power; when the temperature of the electromagnetic relay apparatus 100 decreases, the control circuit 60 decreases the first maintenance power and the second maintenance power, thereby adjusting the sensing threshold value of the electromagnetic relay unit 52 that receives the second maintenance power (the magnitude of the second maintenance power is positively correlated with the magnitude of the sensing threshold value), and increasing the reliability of the electromagnetic relay unit 50 that receives the first maintenance power (the electromagnetic relay unit connected to the load).
When the temperature of the electromagnetic relay device 100 is too high and/or the vibration amount received is too large, the control circuit 60 may determine whether the coils of the electromagnetic relay unit 50 and the electromagnetic relay unit 52 exceed the rated usage specification according to the temperature feedback signal and/or the vibration feedback signal, and if the coils of the electromagnetic relay unit 50 and the electromagnetic relay unit 52 exceed the rated usage specification, the control circuit 60 may notify an upper system (not drawn) in real time, so that the upper system may adopt a necessary manner, for example: the system load is reduced, or the vibration quantity, the temperature and the electromagnetic field of the environment are controlled, so that the danger is avoided, and the reliability of the whole system is improved.
In this embodiment, the electromagnetic relay device 100 may include other sensors besides the temperature sensing unit 80 and the attitude sensing unit 70, for example: the sound sensing unit 10, the current sensing unit 20 and the magnetic field sensing unit 30 enable the control circuit 60 to adjust the first sustain power and the second sustain power according to the feedback signals transmitted by the sensors, so as to increase the reliability of the electromagnetic relay unit 50 (the electromagnetic relay unit connected to the load). More specifically, when the electromagnetic relay device 100 includes the sound sensing unit 10 connected to the control circuit 60, the sound sensing unit 10 is configured to sense whether the electromagnetic relay unit 52 generates a bounce sound, and if the sound sensing unit 10 senses that the electromagnetic relay unit 52 generates the bounce sound (i.e., the electromagnetic relay unit 52 has tripped), the sound sensing unit outputs a sound feedback signal to the control circuit 60, so that the control circuit 60 increases the first sustain power and the second sustain power according to the sound feedback signal. When the electromagnetic relay device 100 includes the current sensing unit 20 connecting the control circuit 60 and the electromagnetic relay unit 50, the current sensing unit 20 determines whether the contact of the load contact spring of the electromagnetic relay unit 50 is poor or jumped off by sensing the load current of the electromagnetic relay unit 50, and if the current sensing unit 20 determines that the contact of the load contact spring of the electromagnetic relay unit 50 is poor or jumped off (i.e., the load current changes for a short time), it outputs a current feedback signal to the control circuit 60, so that the control circuit 60 increases the first sustain power and the second sustain power according to the current feedback signal. When the electromagnetic relay apparatus 100 includes the magnetic field sensing unit 30 connected to the control circuit 60, the magnetic field sensing unit 30 is configured to sense a magnetic field of the electromagnetic relay apparatus 100, and if the magnetic field sensing unit 30 senses a change in the magnetic field of the electromagnetic relay apparatus 100, a magnetic field feedback signal is generated to the control circuit 60, so that the control circuit 60 adjusts the first sustain power and the second sustain power according to the current feedback signal (when the magnetic field of the electromagnetic relay apparatus 100 increases, the control circuit 60 increases the first sustain power and the second sustain power, and when the magnetic field of the electromagnetic relay apparatus 100 decreases, the control circuit 60 decreases the first sustain power and the second sustain power).
The sound sensing unit 10, the current sensing unit 20, the magnetic field sensing unit 30, the attitude sensing unit 70 and the temperature sensing unit 80 can be, but are not limited to, sensors manufactured by Micro Electro Mechanical Systems (MEMS) manufacturing processes, so as to save power consumption.
Referring to fig. 2, fig. 2 is a schematic circuit diagram of another embodiment of an electromagnetic relay device according to the present invention. The main difference between the present embodiment and the previous embodiment is that the electromagnetic relay unit 50 and the electromagnetic relay unit 52 are respectively and independently connected to the control circuit 60 (the electromagnetic relay unit 50 and the electromagnetic relay unit 52 of the previous embodiment are connected in parallel and connected to the control circuit 60).
The control circuit 60 is configured to provide driving power to the electromagnetic relay unit 50 and the electromagnetic relay unit 52, respectively, so as to enable the electromagnetic relay unit 50 and the electromagnetic relay unit 52 to be connected respectively. Then, the control circuit 60 provides the first maintenance power to the electromagnetic relay unit 50, and provides the second maintenance power to the electromagnetic relay unit 52, so that the electromagnetic relay unit 50 and the electromagnetic relay unit 52 maintain the on state respectively, wherein the driving power is greater than the first maintenance power and the second maintenance power, and the second maintenance power is less than or equal to the first maintenance power. In the present embodiment, since the electromagnetic relay unit 50 and the electromagnetic relay unit 52 are independently connected to the control circuit 60, the second sustain power can be smaller than the first sustain power.
When the electromagnetic relay unit 52 receiving the second sustain power trips due to environmental factors, the electromagnetic relay unit 52 receiving the second sustain power generates a trip feedback signal to the control circuit, so that the control circuit 60 increases the first sustain power according to the trip feedback signal.
In this embodiment, since the second sustain power is smaller than the first sustain power, the electromagnetic relay unit 52 receiving the second sustain power will trip and the electromagnetic relay unit 50 receiving the first sustain power will not trip at the same time, therefore, the control circuit 60 according to the embodiment adjusts the first sustain power according to the trip feedback signal to maintain the electromagnetic relay unit 50 in the on state after the electromagnetic relay unit 52 trips, so as to avoid the electromagnetic relay unit 50 from tripping under the same condition, thereby improving the reliability of the electromagnetic relay unit (the electromagnetic relay unit connected to the load) receiving the first sustain power. It should be noted that, while the control circuit 60 increases the previous first sustain power according to the trip feedback signal to maintain the electromagnetic relay unit 50 in the on state, the control circuit 60 may also provide the driving power to the electromagnetic relay unit 52 again to maintain the electromagnetic relay unit 52 in the on state, and then the control circuit 60 increases the previous second sustain power to maintain the electromagnetic relay unit 52 in the on state, wherein the increased second sustain power is still smaller than the increased first sustain power. That is, each time the electromagnetic relay unit 52 trips due to environmental factors, the control circuit 60 may increase the first maintenance power and the second maintenance power according to the trip feedback signal to prevent the electromagnetic relay unit 50 and the electromagnetic relay unit 52 from tripping due to the same condition, thereby adjusting the sensing threshold of the electromagnetic relay unit 52 receiving the second maintenance power (the magnitude of the second maintenance power is positively correlated to the magnitude of the vibration sensing threshold), and improving the reliability of the electromagnetic relay unit receiving the first maintenance power (the electromagnetic relay unit connected to the load).
In the present embodiment, the two electromagnetic relay units 50 may be, but are not limited to, ac electromagnetic relay units. When the electromagnetic relay unit 50 and the electromagnetic relay unit 52 are ac electromagnetic relay units, the control circuit 60 may first provide ac signals to the electromagnetic relay unit 50 and the electromagnetic relay unit 52, respectively, to provide sufficient driving power to drive the electromagnetic relay unit 50 and the electromagnetic relay unit 52, so as to respectively switch on the electromagnetic relay unit 50 and the electromagnetic relay unit 52, and then the control circuit 60 provides a first sustaining power and a second sustaining power (smaller than the driving power) to the electromagnetic relay unit 50 and the electromagnetic relay unit 52 by reducing the amplitude or frequency of the ac signals, so as to respectively maintain the electromagnetic relay unit 50 and the electromagnetic relay unit 52 in a switched-on state, thereby avoiding power loss. Wherein, the alternating current signal can be a common alternating current signal or a half-wave rectification signal output after the common alternating current signal is rectified by a half-wave rectifier; the square of the amplitude of the alternating current signal is proportional to the energy of the alternating current signal; the frequency of the ac signal is linearly related to the energy of the ac signal in a forward direction.
Next, referring to fig. 3, fig. 3 is a flowchart of a method of an embodiment of a control method of an electromagnetic relay device of the present invention, which includes the steps of: providing an electromagnetic relay device which comprises two electromagnetic relay units and a control circuit, wherein the two electromagnetic relay units are of the same type and are adjacent to each other, and the control circuit is connected with the two electromagnetic relay units (step 210); respectively providing driving power to the two electromagnetic relay units through the control circuit to enable the two electromagnetic relay units to be respectively switched on (step 220); respectively providing a first maintenance power and a second maintenance power to the two electromagnetic relay units through the control circuit to enable the two electromagnetic relay units to maintain a connection state, wherein the driving power is greater than the first maintenance power and the second maintenance power, and the second maintenance power is less than or equal to the first maintenance power (step 230); and when the electromagnetic relay unit receiving the second maintenance power trips due to environmental factors, the electromagnetic relay unit receiving the second maintenance power generates a trip feedback signal to the control circuit, so that the control circuit increases the first maintenance power according to the trip feedback signal (step 240). Through the steps, after the two electromagnetic relay units are respectively connected by respectively providing driving power to the two electromagnetic relay units through the control circuit, the two electromagnetic relay units are respectively connected by respectively providing first maintaining power and second maintaining power which are smaller than the driving power to the two electromagnetic relay units, so that the two electromagnetic relay units are kept in a connected state, when the electromagnetic relay unit receiving the second maintaining power trips due to environmental factors, the electromagnetic relay unit receiving the second maintaining power generates a tripping feedback signal to the control circuit, and the control circuit increases the first maintaining power according to the tripping feedback signal, so that the technical effect of improving the reliability of the electromagnetic relay unit receiving the first maintaining power is achieved.
When the two electromagnetic relay units are connected in parallel and connected with the control circuit, the second maintenance power is equal to the first maintenance power. When the two electromagnetic relay units are respectively and independently connected with the control circuit, the second maintenance power can be smaller than or equal to the first maintenance power.
In addition, in this embodiment, in the step of providing the first sustain power and the second sustain power to the two electromagnetic relay units through the control circuit, respectively, the method may further include: and respectively providing a first maintaining power and a second maintaining power to the two electromagnetic relay units in a PWM mode through the control circuit. The detailed description is already described in the above paragraphs, and will not be repeated herein.
In addition, in this embodiment, the electromagnetic relay apparatus control method may further include: providing an attitude sensing unit for sensing the attitude of the electromagnetic relay device, wherein the attitude sensing unit is connected with the control circuit; and when the attitude sensing unit senses that the attitude of the electromagnetic relay device changes, outputting an attitude feedback signal to the control circuit, so that the control circuit adjusts the first maintenance power and the second maintenance power according to the attitude feedback signal. The detailed description is already described in the above paragraphs, and will not be repeated herein.
Next, in this embodiment, the method for controlling an electromagnetic relay device further includes: providing a temperature sensing unit for sensing the temperature of the electromagnetic relay device, wherein the temperature sensing unit is connected with the control circuit; and when the temperature sensing unit senses that the temperature of the electromagnetic relay device changes, outputting a temperature feedback signal to the control circuit, so that the control circuit adjusts the first maintenance power and the second maintenance power according to the temperature feedback signal. The detailed description is already described in the above paragraphs, and will not be repeated herein.
In addition, in this embodiment, the electromagnetic relay apparatus control method may further include: providing a sound sensing unit for sensing whether the electromagnetic relay unit receiving the second maintenance power generates a bouncing sound or not, wherein the sound sensing unit is connected with the control circuit; and when the sound sensing unit senses the bouncing sound generated by the electromagnetic relay unit receiving the second maintenance power, the sound sensing unit outputs a sound feedback signal to the control circuit, so that the control circuit increases the first maintenance power and the second maintenance power according to the sound feedback signal. The detailed description is already described in the above paragraphs, and will not be repeated herein.
Furthermore, in this embodiment, the electromagnetic relay apparatus control method may further include: providing a current sensing unit, and judging whether a load contact elastic sheet of the electromagnetic relay unit receiving the first maintenance power is in poor contact or is tripped or not by the current sensing unit through the load current of the electromagnetic relay unit receiving the first maintenance power, wherein the current sensing unit is connected with a control circuit and the electromagnetic relay unit receiving the first maintenance power; and when the current sensing unit judges that the contact of the load contact elastic sheet is poor or is tripped, the current sensing unit outputs a current feedback signal to the control circuit, so that the control circuit increases the first maintaining power and the second maintaining power according to the current feedback signal. The detailed description is already described in the above paragraphs, and will not be repeated herein.
In another embodiment, the electromagnetic relay apparatus control method further includes: providing a magnetic field sensing unit for sensing the magnetic field of the electromagnetic relay device, wherein the magnetic field sensing unit is connected with the control circuit; and when the magnetic field sensing unit senses the change of the magnetic field of the electromagnetic relay device, outputting a magnetic field feedback signal to the control circuit, so that the control circuit adjusts the first maintenance power and the second maintenance power according to the magnetic field feedback signal. The detailed description is already described in the above paragraphs, and will not be repeated herein.
In summary, it can be seen that the difference between the present invention and the prior art is that after the control circuit respectively provides the driving power to the two electromagnetic relay units adjacent to each other to respectively switch on the two electromagnetic relay units, the control circuit respectively provides the first sustaining power and the second sustaining power smaller than the driving power to the two electromagnetic relay units to maintain the two electromagnetic relay units in a switch-on state, wherein the second sustaining power is smaller than or equal to the first sustaining power, so as to avoid power consumption; when the electromagnetic relay unit receiving the second maintenance power trips due to environmental factors, the electromagnetic relay unit receiving the second maintenance power generates a tripping feedback signal to the control circuit, so that the control circuit increases the first maintenance power according to the tripping feedback signal.
Furthermore, the sensing critical value of the electromagnetic relay unit receiving the second maintenance power can be adjusted by the configuration of the temperature sensing unit, the attitude sensing unit, the sound sensing unit, the current sensing unit or the magnetic field sensing unit, and the reliability of the electromagnetic relay unit receiving the first maintenance power is increased.
Although the present invention has been described with reference to the foregoing embodiments, it should be understood that various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the invention.
Claims (19)
1. An electromagnetic relay device, comprising:
two electromagnetic relay units of the same type and adjacent to each other, and
the control circuit is connected with the two electromagnetic relay units and is used for respectively providing driving power to the two electromagnetic relay units so as to respectively provide first maintaining power and second maintaining power to the two electromagnetic relay units after the two electromagnetic relay units are respectively switched on and respectively maintain the two electromagnetic relay units in a switched-on state, wherein the driving power is greater than the first maintaining power and the second maintaining power, and the second maintaining power is less than or equal to the first maintaining power;
when the electromagnetic relay unit receiving the second maintenance power trips due to environmental factors, the electromagnetic relay unit receiving the second maintenance power generates a tripping feedback signal to the control circuit, so that the control circuit increases the first maintenance power according to the tripping feedback signal.
2. The electromagnetic relay device according to claim 1, wherein when the two electromagnetic relay units are connected in parallel with each other and the control circuit is connected, the second maintenance power is equal to the first maintenance power.
3. The electromagnetic relay device according to claim 1, wherein when the two electromagnetic relay units are independently connected to the control circuit, respectively, the second maintenance power is less than or equal to the first maintenance power.
4. The electromagnetic relay device according to claim 1, wherein both of the two electromagnetic relay units are alternating current electromagnetic relay units or both are direct current electromagnetic relay units.
5. The electromagnetic relay device of claim 1, wherein the control circuit provides the first and second sustaining powers in a step-down voltage mode or a Pulse Width Modulation (PWM) mode.
6. The electromagnetic relay device according to claim 1, further comprising an attitude sensing unit connected to the control circuit for sensing an attitude of the electromagnetic relay device, wherein when the attitude sensing unit senses a change in the attitude of the electromagnetic relay device, the attitude sensing unit outputs an attitude feedback signal to the control circuit, so that the control circuit adjusts the first sustain power and the second sustain power according to the attitude feedback signal.
7. The electromagnetic relay device according to claim 1, further comprising a temperature sensing unit connected to the control circuit for sensing a temperature of the electromagnetic relay device, wherein when the temperature sensing unit senses a change in the temperature of the electromagnetic relay device, the temperature sensing unit outputs a temperature feedback signal to the control circuit, so that the control circuit adjusts the first sustain power and the second sustain power according to the temperature feedback signal.
8. The electromagnetic relay device of claim 1, further comprising a sound sensing unit connected to the control circuit and configured to sense whether the electromagnetic relay unit receiving the second sustain power generates a bounce sound, wherein when the sound sensing unit senses that the electromagnetic relay unit receiving the second sustain power generates a bounce sound, the sound sensing unit outputs a sound feedback signal to the control circuit, so that the control circuit increases the first sustain power and the second sustain power according to the sound feedback signal.
9. The electromagnetic relay device of claim 1, further comprising a current sensing unit, configured to connect the control circuit and the electromagnetic relay unit receiving the first maintenance power, and determine whether a contact failure or a trip of a load contact spring of the electromagnetic relay unit receiving the first maintenance power occurs by receiving a load current of the electromagnetic relay unit receiving the first maintenance power, wherein when the current sensing unit determines that the contact failure or the trip of the load contact spring occurs, the current sensing unit outputs a current feedback signal to the control circuit, so that the control circuit increases the first maintenance power and the second maintenance power according to the current feedback signal.
10. The electromagnetic relay device according to claim 1, further comprising a magnetic field sensing unit, connected to the control circuit, for sensing a magnetic field of the electromagnetic relay device, and when the magnetic field sensing unit senses a change in the magnetic field of the electromagnetic relay device, the magnetic field sensing unit outputs a magnetic field feedback signal to the control circuit, so that the control circuit adjusts the first sustain power and the second sustain power according to the magnetic field feedback signal.
11. A control method of an electromagnetic relay device is characterized by comprising the following steps:
providing an electromagnetic relay device which comprises two electromagnetic relay units and a control circuit, wherein the two electromagnetic relay units are of the same type and are adjacent to each other, and the control circuit is connected with the two electromagnetic relay units;
driving power is respectively provided for the two electromagnetic relay units through the control circuit so as to respectively switch on the two electromagnetic relay units;
respectively providing a first maintenance power and a second maintenance power to the two electromagnetic relay units through the control circuit to enable the two electromagnetic relay units to respectively maintain a connection state, wherein the driving power is greater than the first maintenance power and the second maintenance power, and the second maintenance power is less than or equal to the first maintenance power; and
when the electromagnetic relay unit receiving the second maintenance power trips due to environmental factors, the electromagnetic relay unit receiving the second maintenance power generates a tripping feedback signal to the control circuit, so that the control circuit increases the first maintenance power according to the tripping feedback signal.
12. The electromagnetic relay device control method according to claim 11, wherein in the step of supplying the first maintenance power and the second maintenance power to the two electromagnetic relay units by the control circuit, respectively, further comprises: and respectively providing the first maintaining power and the second maintaining power to the two electromagnetic relay units in a Pulse Width Modulation (PWM) mode or a stepped voltage regulation and reduction mode through the control circuit.
13. The electromagnetic relay device control method according to claim 11, wherein when the two electromagnetic relay units are connected in parallel with each other and the control circuit is connected, the second maintenance power is equal to the first maintenance power.
14. The electromagnetic relay device control method according to claim 11, wherein when the two electromagnetic relay units are independently connected to the control circuit, the second maintenance power is less than or equal to the first maintenance power.
15. The electromagnetic relay device control method according to claim 11, further comprising:
providing an attitude sensing unit for sensing the attitude of the electromagnetic relay device, wherein the attitude sensing unit is connected with the control circuit; and
when the attitude sensing unit senses that the attitude of the electromagnetic relay device changes, an attitude feedback signal is output to the control circuit, so that the control circuit adjusts the first maintenance power and the second maintenance power according to the attitude feedback signal.
16. The electromagnetic relay device control method according to claim 11, further comprising:
providing a temperature sensing unit for sensing the temperature of the electromagnetic relay device, wherein the temperature sensing unit is connected with the control circuit; and
when the temperature sensing unit senses that the temperature of the electromagnetic relay device changes, a temperature feedback signal is output to the control circuit, so that the control circuit adjusts the first maintaining power and the second maintaining power according to the temperature feedback signal.
17. The electromagnetic relay device control method according to claim 11, further comprising:
providing a sound sensing unit for sensing whether the electromagnetic relay unit receiving the second maintenance power generates a bouncing sound, wherein the sound sensing unit is connected with the control circuit; and
when the sound sensing unit senses that the electromagnetic relay unit receiving the second maintenance power generates bouncing sound, the sound sensing unit outputs a sound feedback signal to the control circuit, so that the control circuit increases the first maintenance power and the second maintenance power according to the sound feedback signal.
18. The electromagnetic relay device control method according to claim 11, further comprising:
providing a current sensing unit to judge whether a load contact spring of the electromagnetic relay unit receiving the first maintenance power is in poor contact or is tripped or not by receiving the load current of the electromagnetic relay unit receiving the first maintenance power, wherein the current sensing unit is connected with the control circuit and the electromagnetic relay unit receiving the first maintenance power; and
when the current sensing unit judges that the contact of the load contact elastic sheet is poor or the contact is broken, the current sensing unit outputs a current feedback signal to the control circuit, so that the control circuit increases the first maintaining power and the second maintaining power according to the current feedback signal.
19. The electromagnetic relay device control method according to claim 11, further comprising:
providing a magnetic field sensing unit for sensing the magnetic field of the electromagnetic relay device, wherein the magnetic field sensing unit is connected with the control circuit; and
when the magnetic field sensing unit senses the change of the magnetic field of the electromagnetic relay device, a magnetic field feedback signal is output to the control circuit, so that the control circuit adjusts the first maintenance power and the second maintenance power according to the magnetic field feedback signal.
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| CN201710609796.4A CN109300737B (en) | 2017-07-25 | 2017-07-25 | Electromagnetic relay device and control method thereof |
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| CN201710609796.4A CN109300737B (en) | 2017-07-25 | 2017-07-25 | Electromagnetic relay device and control method thereof |
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| FR3018138B1 (en) * | 2014-03-03 | 2016-02-19 | Peugeot Citroen Automobiles Sa | METHOD FOR CONTROLLING RELAY |
| CN205829173U (en) * | 2016-06-08 | 2016-12-21 | 北京博瑞莱智能科技集团有限公司 | Reactive power compensation circuit and reactive power compensator |
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