Driving control signal output device
By designing a driving control signal output device, the power switch tube and relay are driven for segmented operation using source signal generation, selection, conversion and control, which solves the problem of increased power consumption of traditional relays in high temperature environments, and achieves low power consumption operation and higher control level of relays.
Patent Information
- Application Number
- CN202421521325.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-01
- Publication Date
- 2025-05-16
- Estimated Expiration
- 2034-07-01
AI Technical Summary
The power consumption of traditional relays increases in high temperature environments and the control method is single, making it difficult to achieve segmented control, resulting in the inability to effectively adjust and reduce power consumption.
A driving control signal output device is designed, including a source signal generation unit, a selection unit, a conversion unit and an input control unit. By generating, selecting, converting and controlling the source signal, the power switch tube and relay are driven to perform segmented operation to achieve low power consumption operation.
The low-power operation of the relay is achieved through different driving signals, which improves the operating control level of the relay and avoids the problem of increasing power consumption in high-temperature environments.
Smart Images
Figure CN222884659U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of signal generation control, in particular to a driving control signal output device. Background Art
[0002] A relay is an electronic control device that has a control system (also called an input circuit) and a controlled system (also called an output circuit). It is usually used in automatic control circuits. It is actually an "automatic switch" that uses a smaller current to control a larger current. Therefore, it plays the role of automatic regulation, safety protection, and circuit conversion in the circuit. It is widely used in power protection, automation, motion, remote control, measurement, and communication devices.
[0003] Electromagnetic relays are generally composed of an iron core, a coil, an armature, a contact spring, etc. As long as a certain voltage is applied to both ends of the coil, a certain current will flow through the coil, thereby generating an electromagnetic effect. The armature will overcome the pulling force of the return spring under the action of electromagnetic attraction and be attracted to the iron core, thereby driving the moving contact of the armature and the static contact (normally open contact) to close.
[0004] Environmental adaptability is one of the reliability indicators of relays. The difference in use environment and working conditions has a great impact on the performance of relays. The increase in ambient temperature will accelerate the aging of insulation, causing the insulation performance to decline and shortening the service life. For temperature relays that react to temperature changes, changes in ambient temperature directly affect the changes in maintenance characteristics. As the temperature rises, the temperature rise of the coil increases accordingly, which not only accelerates the aging of the paint layer, but also directly affects the changes in the pull-in and release parameters for voltage relays. For example, for current relays, as the temperature rises, the power consumption increases, which also affects the insulation and contact switching characteristics.
[0005] Traditional relays still maintain the current at startup after being turned on. Since the internal resistance of the relay coil has a positive temperature coefficient, the power consumption of the relay will increase as the working environment temperature rises, resulting in a risk of positive feedback between the working environment temperature and the system power consumption, which increases the power consumption of the system.
[0006] The existing control mode of the relay is a single input signal, which makes it difficult to realize the segmented control operation of the relay, affecting the drive control of the relay, so that the power consumption of the relay cannot be effectively adjusted and reduced;
[0007] Therefore, a driving control signal output device is needed. Utility Model Content
[0008] The utility model provides a drive control signal output device, which generates, selects, converts and inputs source signals, and uses the converted signals to drive the power switch tube to work and the relay to operate in sections. Different drive signals can be used to achieve low-power operation of the relay, thereby improving the level of relay operation control.
[0009] The utility model provides a driving control signal output device, comprising: a source signal generating unit, a source signal selecting unit, a source signal converting unit and a source signal input controlling unit; the source signal generating unit is used for generating a plurality of source signals; the source signal selecting unit is used for selecting one or two source signals as input signals of the source signal converting unit; the source signal converting unit is used for converting the input signal into a driving control signal for driving a power switch tube to work and a relay to operate in sections; the source signal input controlling unit is used for controlling the selection and conversion of the source signal.
[0010] Furthermore, the source signal generating unit includes a first source signal generating subunit, a second source signal generating subunit and a third source signal generating subunit; the first source signal generating subunit is provided with an oscillation signal generator, the oscillation signal generator generates a first source signal, and the first source signal is an oscillation signal; the second source signal generating subunit is provided with a duty cycle generator, the duty cycle generator generates a second source signal, and the second source signal is a pulse broadband modulation signal; the third source signal generating subunit is provided with a sampling resistor and a voltage comparator, the sampling resistor and the voltage comparator are connected, the voltage comparator generates a third source signal, and the third source signal is the first oscillation signal.
[0011] Furthermore, the sampling resistor is used to measure and obtain a sampling voltage of the power switch tube, and the voltage comparator compares the sampling voltage with a preset reference voltage; when the sampling voltage is greater than the preset reference voltage, the voltage comparator generates a third source signal.
[0012] Furthermore, the duty cycle generator receives the oscillation signal and outputs a pulse width modulation signal according to a preset duty cycle.
[0013] Furthermore, the source signal selection unit is provided with a multiplexer, and the multiplexer selects the first oscillation signal or the pulse wideband modulation signal.
[0014] Furthermore, the source signal conversion unit is provided with an RS trigger, the oscillation signal is connected to the R terminal of the RS trigger; the pulse broadband modulation signal or the first oscillation signal is connected to the S terminal of the RS trigger, and the Q terminal of the RS trigger outputs the driving control signal.
[0015] Furthermore, after the oscillation signal is connected to the R end of the RS trigger, the power switch tube performs the first startup operation; after the first oscillation signal is connected to the S end of the RS trigger, the power switch tube performs the first stop operation; after the oscillation signal and the pulse broadband modulation signal are connected to the RS trigger, the power switch tube adaptively performs the second startup operation or the second stop operation.
[0016] Furthermore, the source signal input control unit is provided with a timer, which is connected to a multiplexer. The timer is started or ended by timing a timing cycle, and controls the multiplexer to select the third source signal to access the S end of the RS trigger, or to select the pulse broadband modulation signal to access the S end of the RS trigger.
[0017] Further, the power switch tube is connected to the relay, the power switch tube performs the first startup operation, the second startup operation, the first stop operation or the second stop operation, and the relay operates in sections accordingly.
[0018] Furthermore, the power switch tube performs a first start-up operation and a first stop-up operation, and the relay maintains constant current operation; the power switch tube performs a second start-up operation and a second stop-up operation, and the relay operates with a non-constant current.
[0019] Compared with the prior art, the utility model has the following advantages and beneficial effects: through the generation, selection, conversion and input control of source signals, and using the converted signals to drive the power switch tube to work and the relay to operate in sections, low-power operation of the relay can be achieved through different driving signals, thereby improving the level of relay operation control.
[0020] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained by the structures particularly pointed out in the written description and the drawings.
[0021] The technical solution of the utility model is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:
[0023] Figure 1 This is a schematic diagram of the structure of the drive control signal output device of the utility model;
[0024] Figure 2 A schematic diagram of the source signal of the utility model being input to the RS trigger and outputting a driving control signal;
[0025] Figure 3 It is a schematic diagram of the relationship between the working mode of the relay and the input signal of the utility model. DETAILED DESCRIPTION
[0026] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.
[0027] The utility model provides a drive control signal output device, such as Figure 1 As shown, it includes: a source signal generating unit, a source signal selecting unit, a source signal converting unit and a source signal input controlling unit; the source signal generating unit is used to generate a plurality of source signals; the source signal selecting unit is used to select one or two source signals as input signals of the source signal converting unit; the source signal converting unit is used to convert the input signal into a driving control signal for driving the power switch tube to work and the relay to operate in segments; the source signal input controlling unit is used to control the selection and conversion of the source signal.
[0028] The working principle of the above technical solution is: a source signal generating unit, a source signal selecting unit, a source signal converting unit and a source signal input controlling unit; the source signal generating unit is used to generate a plurality of source signals; the source signal selecting unit is used to select one or two source signals as input signals of the source signal converting unit; the source signal converting unit is used to convert the input signal into a driving control signal for driving the power switch tube to work and the relay to operate in segments; the source signal input controlling unit is used to control the selection and conversion of the source signal.
[0029] The beneficial effects of the above technical solution are: by adopting the solution provided in this embodiment, through the generation, selection, conversion and input control of the source signal, and using the converted signal to drive the power switch tube to work and the relay to operate in segments, low-power operation of the relay can be achieved through different driving signals, thereby improving the level of relay operation control.
[0030] In one embodiment, the source signal generating unit includes a first source signal generating subunit, a second source signal generating subunit and a third source signal generating subunit; the first source signal generating subunit is provided with an oscillation signal generator, the oscillation signal generator generates a first source signal, and the first source signal is an oscillation signal; the second source signal generating subunit is provided with a duty cycle generator, the duty cycle generator generates a second source signal, and the second source signal is a pulse broadband modulation signal; the third source signal generating subunit is provided with a sampling resistor and a voltage comparator, the sampling resistor and the voltage comparator are connected, the voltage comparator generates a third source signal, and the third source signal is the first oscillation signal.
[0031] The working principle of the above technical solution is as follows: the source signal generating unit includes a first source signal generating subunit, a second source signal generating subunit and a third source signal generating subunit; the first source signal generating subunit is provided with an oscillation signal generator, the oscillation signal generator generates a first source signal, and the first source signal is an oscillation signal; the second source signal generating subunit is provided with a duty cycle generator, the duty cycle generator generates a second source signal, and the second source signal is a pulse wideband modulation signal; the third source signal generating subunit is provided with a sampling resistor and a voltage comparator, the sampling resistor and the voltage comparator are connected, the voltage comparator generates a third source signal, and the third source signal is the first oscillation signal; the oscillation signal generator is a device that can provide electrical signals of various frequencies, waveforms and output levels, and can generate a variety of waveforms, such as triangular waves, sawtooth waves, and rectangular waves; the voltage comparator is a circuit that identifies and compares input signals, and is a basic unit circuit that constitutes a non-sinusoidal wave generating circuit, and can be used for waveform generation. A simple voltage comparator can be used to convert a sine wave into a square wave or rectangular wave of the same frequency.
[0032] The beneficial effect of the above technical solution is: by adopting the solution provided in this embodiment, by distinguishing the three source signals and using corresponding devices to generate them, it is ensured that different source signals are obtained so as to be used for conversion into drive control signals.
[0033] In one embodiment, the sampling resistor is used to measure and obtain a sampling voltage of the power switch tube, and the voltage comparator compares the sampling voltage with a preset reference voltage; when the sampling voltage is greater than the preset reference voltage, the voltage comparator generates a third source signal.
[0034] The working principle of the above technical solution is: the sampling resistor is used to measure the sampling voltage of the power switch tube, and the voltage comparator compares the sampling voltage with the preset reference voltage; when the sampling voltage is greater than the preset reference voltage, the voltage comparator generates a third source signal. The role of the sampling resistor is to measure the working voltage on the relay and reflect it through the sampling voltage of the power switch tube. The voltage comparator is pre-set with a reference voltage. By comparing the sampling voltage with the preset reference voltage, the comparison result is used as a condition for the generation of the third source signal as a control device to achieve control of the generation of the source signal.
[0035] The beneficial effect of the above technical solution is: by adopting the solution provided by this embodiment, the third source signal is obtained by obtaining the comparison result of the voltage comparator, which can be used for subsequent signal selection.
[0036] In one embodiment, the duty cycle generator receives an oscillation signal and outputs a pulse width modulation signal according to a preset duty cycle.
[0037] The working principle of the above technical solution is as follows: the duty cycle refers to the ratio of the on time to the entire cycle length, and defines a simple relationship between the input voltage and the output voltage. For example, the duty cycle of a step-down (buck) converter is the ratio of the output voltage to the input voltage; the duty cycle generator is a signal generating device that can generate certain specific periodic time function waveform signals with a frequency range from a few microhertz to tens of megahertz, that is, according to the preset duty cycle, when a variable duty cycle square wave is generated, the duty cycle is usually limited to 20% to 80% and is stepped by 1%. Because the duty cycle is related to the input The product value of the voltage of the oscillation signal is a constant. According to this principle, as the duty cycle changes, the duty cycle generator will generate a broadband modulation signal that changes with the oscillation signal; the duty cycle generator receives the oscillation signal and outputs a pulse broadband modulation signal according to a preset duty cycle; through the duty cycle generator and setting the duty cycle, it can be ensured that the output pulse broadband modulation signal is adjusted with the change of the oscillation signal, thereby ensuring that the coil internal resistance of the relay and the coil current change in the opposite direction, realizing the complementarity of the coil power consumption, so that the coil power consumption does not change with the change of ambient temperature.
[0038] The beneficial effect of the above technical solution is: by adopting the solution provided in this embodiment, the pulse broadband modulation signal output by the duty cycle generator can be used for subsequent signal selection.
[0039] In one embodiment, the source signal selection unit is provided with a multiplexer, and the multiplexer selects the first oscillation signal or the pulse width modulation signal.
[0040] The working principle of the above technical solution is: the source signal selection unit is provided with a multiplexer, and the multiplexer selects the first oscillation signal or the pulse broadband modulation signal; the multiplexer is an electronic device used to select and convert multiple input signals into an output signal. The multiplexer usually has multiple input terminals and one output terminal, and the input terminals can be two or more, and there is only one output terminal; the input selection of the multiplexer can be realized through the control terminal, and the input of the control terminal can determine which input terminal of the selector's signal is transmitted to the output terminal; the multiplexer can select different input signals for transmission according to different control signals, and can realize signal switching.
[0041] The beneficial effect of the above technical solution is: by adopting the solution provided by this embodiment, the source signal can be selected in a targeted manner through the multiplexer.
[0042] In one embodiment, Figure 2 As shown, the source signal conversion unit is provided with an RS trigger, the oscillation signal is connected to the R end of the RS trigger; the pulse broadband modulation signal or the first oscillation signal is connected to the S end of the RS trigger, and the Q end of the RS trigger outputs the driving control signal.
[0043] The working principle of the above technical solution is: the source signal conversion unit is provided with an RS trigger, and the oscillation signal is connected to the R end of the RS trigger; the pulse broadband modulation signal or the first oscillation signal is connected to the S end of the RS trigger, and the Q end of the RS trigger outputs a driving control signal.
[0044] The RS flip-flop is a reset / set flip-flop with two stable states, 1 and 0. If there is no external trigger signal, it will keep its original state unchanged. The flip-flop has a memory function. Only under the action of an external trigger signal can the output state of the flip-flop change. The output state is directly controlled by the input signal. The drive control signal output from the Q end is the state of the RS flip-flop after receiving the input signal.
[0045] The beneficial effect of the above technical solution is: by adopting the solution provided by this embodiment, different driving control signals can be obtained through signal conversion of the RS trigger in the source signal conversion unit.
[0046] In one embodiment, after the oscillation signal is connected to the R end of the RS trigger, the power switch tube performs a first startup operation; after the first oscillation signal is connected to the S end of the RS trigger, the power switch tube performs a first stop operation; after the oscillation signal and the pulse broadband modulation signal are connected to the RS trigger, the power switch tube adaptively performs a second startup operation or a second stop operation.
[0047] The working principle of the above technical solution is: after the oscillation signal is connected to the R end of the RS trigger, the power switch tube performs the first start-up operation; after the first oscillation signal is connected to the S end of the RS trigger, the power switch tube performs the first stop operation; after the oscillation signal and the pulse broadband modulation signal are connected to the RS trigger, the power switch tube adaptively performs the second start-up operation or the second stop operation.
[0048] The beneficial effect of the above technical solution is: by adopting the solution provided in this embodiment, through the conversion of the source signal by the RS trigger, the power switch tube can be controlled to start or stop working through the output drive control signal.
[0049] In one embodiment, the source signal input control unit is provided with a timer, which is connected to a multiplexer. The timer is started or ended by timing a timing cycle, and controls the multiplexer to select the third source signal to access the S end of the RS trigger, or to select the pulse broadband modulation signal to access the S end of the RS trigger.
[0050] The working principle of the above technical solution is: the source signal input control unit is provided with a timer, the timer is connected to the multiplexer, the timer is started or ended by the timing of the timing cycle, and the multiplexer is controlled to select the third source signal to access the S end of the RS trigger, or select the pulse broadband modulation signal to access the S end of the RS trigger. By setting the timing cycle of the timer, it is possible to ensure that the time period for the multiplexer to select the source signal is accurately controlled.
[0051] After the timer starts, the oscillation signal generated by the oscillation signal generator is input into the RS trigger, and the RS trigger outputs a drive control signal, and the power switch tube performs the first startup operation. The current driving the relay generates a signal voltage on the sampling resistor. If the signal voltage is greater than the set reference voltage, the voltage comparator outputs the first oscillation signal, and the multiplexer selects the first oscillation signal and inputs it to the S end of the RS trigger to generate a drive control signal. At this time, the power switch tube performs the first shutdown operation; after the timing cycle of the timer ends, the multiplexer selects the pulse broadband modulation signal to be connected to the S end of the RS trigger. At this time, the RS trigger generates a drive signal, and the power switch tube adaptively performs the second startup operation or the second stop operation.
[0052] The beneficial effect of the above technical solution is: by adopting the solution provided by this embodiment, the selection of the signal by the multiplexer can be controlled by the timer to realize the control of the source signal.
[0053] In one embodiment, Figure 3 As shown, the power switch tube is connected to the relay, the power switch tube performs the first startup operation, the second startup operation, the first stop operation or the second stop operation, and the relay operates in sections accordingly.
[0054] The working principle of the above technical solution is: the power switch tube is connected to the relay, the power switch tube performs the first start-up operation, the second start-up operation, the first stop operation or the second stop operation, and the relay operates in sections accordingly.
[0055] The beneficial effect of the above technical solution is: by adopting the solution provided by this embodiment, the relay operates in sections accordingly through the start-up and stop-up of the power switch tube, thereby realizing the control of the relay by the power switch tube.
[0056] In one embodiment, the power switch tube performs a first startup operation and a first stop operation, and the relay maintains constant current operation; the power switch tube performs a second startup operation and a second stop operation, and the relay operates with a non-constant current.
[0057] The working principle of the above technical solution is: the power switch tube performs the first start-up work and the first stop work, and the relay maintains constant current operation. At this time, it can be ensured that the relay can maintain a stable pull-in current even if there is a large fluctuation in the input voltage, thereby ensuring the reliable pull-in of the relay; the power switch tube performs the second start-up work and the second stop work, and the relay operates with a non-constant current; since the internal resistance of the relay coil has a positive temperature coefficient, when the power switch tube performs the second start-up work and the second stop work, if a constant current working mode is adopted, as the working environment temperature increases, the power consumption of the relay will increase, thereby there is a risk of positive feedback between the working environment temperature and the system power consumption. In order to achieve low power consumption during normal operation and maintain good temperature characteristics, a non-constant current working mode is adopted.
[0058] The beneficial effect of the above technical solution is: by adopting the solution provided by this embodiment, different starting operations or stopping operations are performed by the power switch tube, thereby ensuring that the relay operates in different ways.
[0059] It should be noted that, for the above embodiments, for the sake of simplicity, they are all described as a series of action combinations, but those skilled in the art should be aware that the present application is not limited by the order of the actions described, because according to the present application, some steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification belong to preferred embodiments, and the actions involved are not necessarily required by the present application.
[0060] In addition, the terms "connected" and "set" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly indicate the number of technical features indicated. Thus, a feature defined as "connected" or "set" may explicitly or implicitly include one or more of the features. Moreover, the terms "connected", "set", etc. are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate so that the embodiments of the utility model described herein can be implemented in an order other than those illustrated or described herein.
[0061] The above embodiments describe the basic principle and main features of the utility model and the advantages of the utility model. The technicians in this industry should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the changes and modifications made by the technicians in this field shall be within the scope of protection of the claims attached to the utility model.
Claims
1. A drive control signal output device, characterized in that: include: A source signal generating unit, a source signal selecting unit, a source signal converting unit and a source signal input controlling unit; the source signal generating unit is used to generate a plurality of source signals; the source signal selecting unit is used to select one or two source signals as input signals of the source signal converting unit; the source signal converting unit is used to convert the input signal into a driving control signal for driving the power switch tube to work and the relay to operate in segments; the source signal input controlling unit is used to control the selection and conversion of the source signal.
2. A drive control signal output device according to claim 1, characterized in that: The source signal generating unit includes a first source signal generating subunit, a second source signal generating subunit and a third source signal generating subunit; the first source signal generating subunit is provided with an oscillation signal generator, the oscillation signal generator generates a first source signal, and the first source signal is an oscillation signal; the second source signal generating subunit is provided with a duty cycle generator, the duty cycle generator generates a second source signal, and the second source signal is a pulse broadband modulation signal; the third source signal generating subunit is provided with a sampling resistor and a voltage comparator, the sampling resistor and the voltage comparator are connected, the voltage comparator generates a third source signal, and the third source signal is the first oscillation signal.
3. A drive control signal output device according to claim 2, characterized in that: The sampling resistor is used to measure the sampling voltage of the power switch tube, and the voltage comparator compares the sampling voltage with a preset reference voltage; when the sampling voltage is greater than the preset reference voltage, the voltage comparator generates a third source signal.
4. A drive control signal output device according to claim 2, characterized in that: The duty cycle generator receives an oscillation signal and outputs a pulse width modulation signal according to a preset duty cycle.
5. The drive control signal output device according to claim 1, characterized in that: The source signal selection unit is provided with a multiplexer, and the multiplexer selects the first oscillation signal or the pulse wideband modulation signal.
6. The drive control signal output device according to claim 1, characterized in that: The source signal conversion unit is provided with an RS trigger, the oscillation signal is connected to the R terminal of the RS trigger; the pulse broadband modulation signal or the first oscillation signal is connected to the S terminal of the RS trigger, and the Q terminal of the RS trigger outputs a driving control signal.
7. The drive control signal output device according to claim 1, characterized in that: After the oscillation signal is connected to the R end of the RS trigger, the power switch tube performs the first startup operation; after the first oscillation signal is connected to the S end of the RS trigger, the power switch tube performs the first stop operation; after the oscillation signal and the pulse broadband modulation signal are connected to the RS trigger, the power switch tube adaptively performs the second startup operation or the second stop operation.
8. The drive control signal output device according to claim 1, characterized in that: The source signal input control unit is provided with a timer, which is connected to a multiplexer. The timer is started or ended by timing a timing cycle, and controls the multiplexer to select the third source signal to access the S end of the RS trigger, or to select the pulse broadband modulation signal to access the S end of the RS trigger.
9. The drive control signal output device according to claim 1, characterized in that: The power switch tube is connected to the relay, and the power switch tube performs the first start-up operation, the second start-up operation, the first stop operation or the second stop operation, and the relay operates in sections accordingly.
10. A drive control signal output device according to claim 9, characterized in that: The power switch tube performs the first start-up operation and the first stop-up operation, and the relay maintains constant current operation; the power switch tube performs the second start-up operation and the second stop-up operation, and the relay operates with a non-constant current.