Control system and electronic equipment

Abstract

The utility model discloses a control system and electronic equipment, and relates to the technical field of electronic circuits. The power supply switching module is connected with the main control module and is used for conducting a first power supply switch corresponding to a first voltage according to a first power supply switching control instruction of the main control module and then conducting a second power supply switch corresponding to a second voltage according to a second power supply switching control instruction of the main control module, and the first voltage is higher than the second voltage; the relay module is connected with the power supply switching module and is used for entering a continuous operation state according to a second power supply switch conducted in the power supply switching module after entering a pull-in state according to a first power supply switch conducted in the power supply switching module, so that the power consumption of the relay module during continuous power-on work is reduced; and therefore, the over-high power consumption and over-temperature risk of equipment caused by continuous temperature rise of the relay module can be avoided.

Description

Technical Field

[0001] The present application relates to the field of electronic circuit technology, and in particular to a control system and electronic equipment. Background Art

[0002] When a relay is operating, its coil is energized, generating continuous power consumption. This power consumption causes the relay's temperature to rise continuously, resulting in excessively high temperatures. Therefore, when multiple relays within a device are operating simultaneously, the temperature rise of the internal relay coils can cause the entire device to overheat, which can easily cause malfunctions.

[0003] Currently, a method of connecting a voltage-dividing resistor in series with the relay coil branch is proposed to reduce the coil temperature through the voltage-dividing resistor. However, the series voltage-dividing resistor will cause another part of power consumption, which will still increase the operating temperature of the equipment, so that there is still a risk of excessive power consumption and overheating during equipment operation. Utility Model Content

[0004] The main purpose of this application is to provide a control system and electronic equipment, aiming to solve the technical problems of excessive power consumption and high coil temperature caused by the operation of the relay.

[0005] To achieve the above objectives, the present application proposes a control system, which includes:

[0006] Main control module;

[0007] a power switching module connected to the main control module, configured to turn on a first power switch corresponding to a first voltage according to a first power switching control instruction of the main control module, and then turn on a second power switch corresponding to a second voltage according to a second power switching control instruction of the main control module, wherein the first voltage is higher than the second voltage;

[0008] The relay module connected to the power switching module is used to enter the energized state according to the first power switch and the second power switch being turned on in the power switching module, and then enter the continuous operation state according to the first power switch being turned off and the second power switch being turned on in the power switching module.

[0009] In one embodiment, the power switching module includes a power supply unit and a switch unit connected to the power supply unit;

[0010] A power supply unit, configured to output a first voltage and a second voltage to the switch unit;

[0011] The switch switching unit is used to access the first voltage and / or the second voltage and transmit the first voltage and / or the second voltage to the relay module according to the switching state of the first power switch and the second power switch.

[0012] In one embodiment, the power supply unit includes a first power supply and a second power supply connected in parallel;

[0013] The negative electrode of the first power supply and the negative electrode of the second power supply are connected to the ground terminal respectively, and the positive electrode of the first power supply and the positive electrode of the second power supply are connected to the input terminal of the switching unit;

[0014] The first power supply outputs a first voltage, and the second power supply outputs a second voltage.

[0015] In one embodiment, the switch switching unit includes a pull-in control subunit and a low-side control subunit;

[0016] The pickup control subunit is connected between the output terminal of the first power supply and the relay module, and is used to transmit the first voltage to the relay module in the on state;

[0017] The low-side control subunit is connected to the second power supply via the relay module, and is used to control the second voltage to flow into the relay module in the on state.

[0018] In one embodiment, the pull-in control subunit includes a first switch tube;

[0019] The control end of the first switch tube is connected to the main control module, the input end of the first switch tube is connected to the positive electrode of the first power supply, and the output end of the first switch tube is connected to the relay module.

[0020] In one embodiment, the low-side control subunit includes a second switch tube;

[0021] The control end of the second switch tube is connected to the main control module, the input end of the second switch tube is connected to the positive electrode of the second power supply via the relay module, and the output end of the second switch tube is grounded.

[0022] In one embodiment, a relay module includes a relay subunit, a switching element, and a first coil;

[0023] The two ends of the switch element are connected to the relay subunit, the first end of the first coil is connected to the output end of the first switch tube and the positive pole of the second power supply respectively, and the second end of the first coil is connected to the input end of the second switch tube.

[0024] In one embodiment, a first diode is connected to the connection line between the second power supply and the first coil.

[0025] In one embodiment, a second diode is connected between the first end of the first coil and the second end of the first coil.

[0026] In addition, to achieve the above-mentioned object, the present application further provides an electronic device, which includes the control system described above, and the control system includes:

[0027] Main control module;

[0028] a power switching module connected to the main control module, configured to turn on a first power switch corresponding to a first voltage according to a first power switching control instruction of the main control module, and then turn on a second power switch corresponding to a second voltage according to a second power switching control instruction of the main control module, wherein the first voltage is higher than the second voltage;

[0029] The relay module connected to the power switching module is used to enter the energized state according to the first power switch turned on in the power switching module, and then enter the continuous operation state according to the second power switch turned on in the power switching module.

[0030] One or more technical solutions proposed in this application have at least the following technical effects:

[0031] A control system is proposed, comprising: a main control module; a power switching module connected to the main control module, configured to turn on a first power switch corresponding to a first voltage according to a first power switching control instruction of the main control module, and then turn on a second power switch corresponding to a second voltage according to a second power switching control instruction of the main control module, wherein the first voltage is higher than the second voltage; and a relay module connected to the power switching module, configured to enter an energized state according to the first power switch and the second power switch being turned on in the power switching module, and then enter a continuous operation state according to the first power switch being turned off and the second power switch being turned on in the power switching module.

[0032] In the present application, the first power switch and the second power switch in the power switching module are switched by the main control module, so that after the first power switch and the second power switch are turned on, the first voltage is transmitted to the relay module, so that the relay module enters the attracted state, and then the first power switch is turned off, while keeping the conductive state of the second power switch, and the second voltage is transmitted to the relay module. Based on the second voltage, the relay module is controlled to enter a continuous operation state. While realizing the continuous power-on operation of the relay module, because the voltage value of the second voltage is lower than the voltage value of the first voltage, the power consumption of the continuously powered relay module will be reduced, thereby avoiding the continuous increase in the temperature of the relay module. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0034] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0035] Figure 1 This is a module diagram of the control system of this application;

[0036] Figure 2 This is a schematic diagram of the power switching module of this application;

[0037] Figure 3 This is a detailed structural diagram of the control system of this application.

[0038] Description of Figure Numbers:

[0039] 10. Main control module;

[0040] 20. Power switching module;

[0041] 201, power supply unit; VCC1, first power supply; VCC2, second power supply;

[0042] 202, switch switching unit; 2021, pull-in control subunit; 2022, low-side control subunit; Q1, first switch tube; Q2, second switch tube;

[0043] 30. Relay module; RELAY, relay subunit; K1, switch element; L1, first coil;

[0044] D1, first diode; D2, second diode.

[0045] The purpose, features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0046] The following will be combined with the accompanying drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of this application.

[0047] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0048] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement it. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0049] This application proposes a control system.

[0050] See Figure 1 , in this application, the control system includes:

[0051] A main control module 10; a power switching module 20 connected to the main control module 10, used to turn on a first power switch corresponding to a first voltage according to a first power switching control instruction of the main control module 10, and then turn on a second power switch corresponding to a second voltage according to a second power switching control instruction of the main control module 10, wherein the first voltage is higher than the second voltage; a relay module 30 connected to the power switching module 20, used to enter an attracted state according to the first power switch and the second power switch turned on in the power switching module 20, and then enter a continuous operation state according to the first power switch turned off and the second power switch turned on in the power switching module 20.

[0052] The main control module 10 can switch the first power switch and the second power switch in the power switching module 20 on and off according to the setting. Because the first power switch corresponds to the first voltage and the second power switch corresponds to the second voltage, in this embodiment, the voltage value of the first voltage is set to the standard voltage of the relay module 30, such as 12V, 24V or 48V, etc., and the voltage value of the second voltage is set to be higher than the release voltage value of the relay coil in the relay module 30 and lower than the voltage value of the first voltage.

[0053] When it is necessary to control the relay module 30 in the shutdown state to enter the running state, the main control module 10 first controls the first power switch and the second power switch in the power switching module 20 to be turned on, and transmits the corresponding first voltage to the relay module 30, so as to control the relay module 30 to enter the attracted state, that is, to enter the running state. However, because the relay module 30 at this time is based on the first voltage and has a high power consumption, in order to avoid the overheating risk caused by high power consumption, after a preset delay, the main control module 10 controls the first power switch in the power switching module 20 to be cut off, while keeping the second power switch on, and transmits the corresponding second voltage to the relay module 30. At this time, the relay module 30 is controlled to enter the continuous running state based on the second voltage. Because the voltage value of the second voltage is only higher than the release voltage value, the second voltage can not only maintain the running state of the relay module 30, but also avoid the high power consumption and overheating risks of the first voltage.

[0054] It should be noted that the first power switching control instruction includes a first on instruction for controlling the first power switch to be turned on and a first off instruction for controlling the first power switch to be turned off, and the second power switching control instruction includes a second on instruction for controlling the second power switch to be turned on and a second off instruction for controlling the second power switch to be turned off.

[0055] The preset duration is set based on actual needs, and is the conduction interval duration between the first power switch and the second power switch.

[0056] The main control module 10 can use controllers of models RS1T45 / 2T45 and RS4T245.

[0057] For details, see Figure 2 The power switching module 20 includes a power supply unit 201 and a switch switching unit 202 connected to the power supply unit 201; the power supply unit 201 is used to output the first voltage and the second voltage to the switch switching unit 202; the switch switching unit 202 is used to access the first voltage and / or the second voltage, and transmit the first voltage and / or the second voltage to the relay module 30 according to the switching state of the first power switch and the second power switch.

[0058] The power switching module 20 is divided, and the unit that outputs the first voltage and the second voltage in the power switching module 20 is divided into a power supply unit 201, and the unit that controls the output state of the first voltage and the second voltage in the power switching module 20 is divided into a switch switching unit 202. The specific unit structure is described as follows.

[0059] For details, see Figure 3 , the power supply unit 201 includes a first power supply VCC1 and a second power supply VCC2 connected in parallel;

[0060] The negative electrode of the first power supply VCC1 and the negative electrode of the second power supply VCC2 are connected to the ground terminal respectively, and the positive electrode of the first power supply VCC1 and the positive electrode of the second power supply VCC2 are connected to the input terminal of the switch switching unit 202; wherein, the first power supply VCC1 outputs a first voltage, and the second power supply VCC2 outputs a second voltage.

[0061] Depend on Figure 3 It can be seen that the power supply unit 201 in this embodiment includes a first power supply VCC1 and a second power supply VCC2 connected in parallel. The power consumption of the relay module 30 is adjusted by controlling the voltage output switching between the first power supply VCC1 and the second power supply VCC2.

[0062] The first voltage output by the first power supply VCC1 is used to control the relay module 30 to enter the operating state. Therefore, the voltage value of the first voltage output by the corresponding first power supply VCC1 is relatively high. After the relay module 30 is controlled by the first voltage to enter the stable operating state, in order to avoid the continuous increase in the temperature of the relay module 30 caused by high power consumption, it will switch to the second power supply VCC2 to output the second voltage to make the relay module 30 enter the continuous operating state, that is, the operating state of the relay module 30 is maintained by the second voltage which is lower than the first voltage, thereby reducing the power consumption of the relay module 30 and avoiding the temperature increase.

[0063] Furthermore, the switch switching unit 202 includes a pull-in control subunit 2021 and a low-side control subunit 2022;

[0064] The pull-in control subunit 2021 (i.e., the first power switch) is connected between the output terminal of the first power supply VCC1 and the relay module 30. When in the on state, it transmits the first voltage to the relay module 30. The low-side control subunit 2022 (i.e., the second power switch) is connected to the second power supply VCC2 via the relay module 30. When in the on state, it controls the flow of the second voltage to the relay module 30.

[0065] The main control module 10 controls the switching states of the pull-in control subunit 2021 and the low-side control subunit 2022 respectively, thereby switching the voltage outputs of the first power supply VCC1 and the second power supply VCC2.

[0066] In this embodiment, first, the main control module 10 controls the attraction control subunit 2021 and the low-side control subunit 2022 to enter the on state, and through the turned-on low-side control subunit 2022, the second power supply VCC2 is turned on through the relay module 30 to the loop between the ground terminal in the low-side control subunit 2002, so that the first voltage output after the attraction control subunit 2021 is closed can reach the ground terminal of the low-side control subunit 2002 from the relay module 30, forming a complete power supply loop. At this time, the first voltage output by the first power supply VCC1 is connected through the turned-on attraction control subunit 2021, and the first voltage is transmitted to the relay module 30 to control the relay module 30 to enter the operating state.

[0067] After determining that the relay module 30 enters the operating state, the control unit 2021 is controlled to enter the cut-off state, while maintaining the conductive state of the low-side control subunit 2022. Through the conductive low-side control subunit 2022, the second voltage can be smoothly transmitted to the relay module 30, and the relay module 30 is controlled to enter the continuous operation state, thereby realizing the voltage switching process from the first voltage to the second voltage.

[0068] Furthermore, the pull-in control subunit 2021 includes a first switch tube Q1;

[0069] The control end of the first switch tube Q1 is connected to the main control module 10 , the input end of the first switch tube Q1 is connected to the positive electrode of the first power supply VCC1 , and the output end of the first switch tube Q1 is connected to the relay module 30 .

[0070] The main control module 10 inputs a low-level first power switching control instruction to the control terminal of the first switch Q1, causing the first switch Q1 to enter the on state. At this time, the first voltage output by the positive electrode of the first power supply VCC1 is input from the input terminal of the first switch Q1 and output from the output terminal of the first switch Q1 to the positive electrode of the first coil L1 of the relay module 30. If the low-side control subunit 2022 is not in the on state, the first voltage cannot reach the negative electrode of the first coil L1 to form a complete power supply circuit. Therefore, when only the first switch Q1 is in the on state, the relay module 30 cannot be powered on and enter the operating state.

[0071] To control the first switch tube Q1 to enter the cut-off state, it is only necessary to input a high-level first power switching control instruction to the control terminal of the first switch tube Q1 through the main control module 10 .

[0072] Furthermore, the low-side control subunit 2022 includes a second switch tube Q2;

[0073] The control end of the second switch tube Q2 is connected to the main control module 10 , the input end of the second switch tube Q2 is connected to the positive electrode of the second power supply VCC2 via the relay module 30 , and the output end of the second switch tube Q2 is grounded.

[0074] The main control module 10 inputs a high-level second power switching control instruction to the control terminal of the second switch tube Q2, so that the second switch tube Q2 enters the conducting state. Figure 3 It can be seen that after the second switch tube Q2 enters the on state, the second voltage output from the positive electrode of the second power supply VCC2 is input to the input end of the second switch tube Q2 through the relay module 30, and then input from the output end of the second switch tube Q2 to the ground end, forming a conductive loop. Therefore, when both the first switch tube Q1 and the second switch tube Q2 enter the on state, the first voltage can pass through the positive electrode of the first coil L1 to its negative electrode and then enter the ground end, forming a complete power supply loop, so that the relay module 30 enters the operating state.

[0075] After delaying for a preset period of time, the main control module 10 inputs a first power switching control instruction to the control end of the first switch tube Q1, causing the first switch tube Q1 to enter a cut-off state, thereby converting the power supply voltage of the relay module 30 from the first voltage to the second voltage. The relay module 30 is powered by the second voltage, causing the relay module 30 to enter a continuous operation state.

[0076] To control the second switch tube Q2 to enter the cut-off state, it is only necessary to input a low-level second power supply switching control instruction to the control terminal of the second switch tube Q2 through the main control module 10 .

[0077] It should be noted that the first switch tube Q1 and the second switch tube Q2 in this embodiment use MOS (Metal-Oxide-Semiconductor Field-Effect Transistor). In actual application, they can also be replaced with electronic switches such as triodes and IGBTs (Insulated Gate Bipolar Transistors).

[0078] Furthermore, the relay module 30 includes a relay subunit RELAY, a switch element K1 and a first coil L1;

[0079] The two ends of the switch element K1 are connected to the relay subunit RELAY, the first end of the first coil L1 is connected to the output end of the first switch tube Q1 and the positive electrode of the second power supply VCC2 respectively, and the second end of the first coil L1 is connected to the input end of the second switch tube Q2.

[0080] When the second switch tube Q2 is closed, conducting the loop between the negative electrode of the first coil L1 and the ground terminal connected to the output terminal of the second switch tube Q2, a first voltage / second voltage will pass through the first coil L1. The passing first voltage / second voltage will generate a magnetic field around the first coil L1, thereby generating an attractive force on the switch element K1, causing the switch element K1 to close and connect the relay sub-unit RELAY, thereby controlling the relay sub-unit RELAY to enter the operating state / continuous operating state.

[0081] The power consumption on the first coil L1 is related to the magnitude of the voltage passing through it. When the first voltage passes through it, the power consumption on the first coil L1 is relatively large, and the temperature of the first coil L1 will continue to rise. When the first voltage is switched to the second voltage passing through the first coil L1, because the voltage value of the second voltage is lower than the voltage value of the first voltage, the power consumption on the first coil L1 at this time is lower than the power consumption when the first voltage passes through it, so the temperature on the first coil L1 will decrease. Correspondingly, the temperature on the relay module 30 will also decrease, achieving low power consumption and energy saving, improving the power utilization rate of electronic equipment, and at the same time extending the service life of the relay module 30 to a certain extent.

[0082] In actual applications, it is found that when the relay module 30 implemented in this embodiment is in operation, the temperature of the relay module 30 is only 10-15° C. higher than the ambient temperature.

[0083] Furthermore, a first diode D1 is connected to the connecting line between the second power supply VCC2 and the first coil L1. The first diode D1 is used to ensure that the voltage direction of the second voltage output by the second power supply VCC2 is from the positive pole of the second power supply VCC2 to the input end of the relay module 30, while preventing the first voltage from flowing back to the second power supply VCC2.

[0084] Furthermore, a second diode D2 is connected between the first end of the first coil L1 and the second end of the first coil L1 , and the second diode D2 is used to discharge the back electromotive force on the first coil L1 .

[0085] The present application also provides an electronic device, which includes the control system described above, and the control system includes:

[0086] Main control module 10;

[0087] The power switching module 20 connected to the main control module 10 is configured to turn on a first power switch corresponding to a first voltage according to a first power switching control instruction of the main control module 10, and then turn on a second power switch corresponding to a second voltage according to a second power switching control instruction of the main control module 10, wherein the first voltage is higher than the second voltage;

[0088] The relay module 30 connected to the power switching module 20 is used to enter the energized state according to the first power switch turned on in the power switching module 20 , and then enter the continuous operation state according to the second power switch turned on in the power switching module 20 .

[0089] The above description is merely an exemplary embodiment of the present application and does not limit the patent scope of the present application. Any equivalent structural transformation made using the contents of the present application specification and drawings under the technical concept of the present application, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present application.

Claims

1. A control system, characterized in that: The control system includes: Main control module; a power switching module connected to the main control module, configured to turn on a first power switch corresponding to a first voltage according to a first power switching control instruction of the main control module, and then turn on a second power switch corresponding to a second voltage according to a second power switching control instruction of the main control module, wherein the first voltage is higher than the second voltage; The relay module connected to the power switching module is used to enter the energized state according to the first power switch and the second power switch being turned on in the power switching module, and then enter the continuous operation state according to the first power switch being turned off and the second power switch being turned on in the power switching module.

2. The control system according to claim 1, wherein: The power switching module includes a power supply unit and a switch unit connected to the power supply unit; The power supply unit is configured to output the first voltage and the second voltage to the switch unit; The switch switching unit is used to access the first voltage and / or the second voltage, and transmit the first voltage and / or the second voltage to the relay module according to the switching status of the first power switch and the second power switch.

3. The control system according to claim 2, wherein: The power supply unit includes a first power supply and a second power supply connected in parallel; The negative electrode of the first power supply and the negative electrode of the second power supply are connected to the ground terminal respectively, and the positive electrode of the first power supply and the positive electrode of the second power supply are connected to the input terminal of the switching unit; The first power supply outputs the first voltage, and the second power supply outputs the second voltage.

4. The control system according to claim 3, wherein: The switch switching unit includes a pull-in control subunit and a low-side control subunit; The pickup control subunit is connected between the output end of the first power supply and the relay module, and is used to transmit the first voltage to the relay module in the on state; The low-side control subunit is connected to the second power supply via the relay module, and is used to control the second voltage to flow into the relay module in an on state.

5. The control system according to claim 4, characterized in that The pull-in control subunit includes a first switch tube; The control end of the first switch tube is connected to the main control module, the input end of the first switch tube is connected to the positive electrode of the first power supply, and the output end of the first switch tube is connected to the relay module.

6. The control system according to claim 5, characterized in that The low-side control subunit includes a second switch tube; The control end of the second switch tube is connected to the main control module, the input end of the second switch tube is connected to the positive electrode of the second power supply via the relay module, and the output end of the second switch tube is grounded.

7. The control system according to claim 6, wherein: The relay module includes a relay subunit, a switch element and a first coil; The two ends of the switching element are connected to the relay subunit, the first end of the first coil is respectively connected to the output end of the first switching tube and the positive pole of the second power supply, and the second end of the first coil is connected to the input end of the second switching tube.

8. The control system according to claim 7, wherein: A first diode is connected to a connection line between the second power supply and the first coil.

9. The control system according to claim 7, wherein: A second diode is connected between the first end of the first coil and the second end of the first coil.

10. An electronic device, characterized in that: The electronic device includes the control system according to any one of claims 1 to 9.

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