Circuit for converting high-level input signal into high-level output signal

Abstract

The utility model discloses a circuit for converting a high-level input signal into a high-level output signal, relates to the technical field of level signal conversion, and solves the technical problems that a circuit for converting the high-level input signal into the high-level output signal is inflexible in adaptation mode and inconvenient to use. The circuit comprises a control end, a control signal input end and a multi-path relay output circuit, the control signal input end is connected with the control end, and the multi-path relay output circuit is connected with the control signal input end; the control end generates a control signal based on a high-level input signal, and the control signal input end switches on or off the multi-path relay output circuit according to the control signal so as to switch on or switch off a plurality of high-level output signals. According to the utility model, the high-level input signal is enabled and disabled as required through the control signal input end, the flexibility of high-level driving signal configuration is improved, and the use is more convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of level signal conversion, especially relates to a circuit of high level input signal conversion high level output signal. BACKGROUND

[0002] High level input signal conversion high level output signal's circuit is often used in control circuit, usually adopts following two methods.(1) MCU receives input signal and directly outputs high level signal after operating logic, the shortage of this method is that the driving capacity of MCU is limited, and the voltage value of the output high level signal can only be bound with the characteristics of MCU, cannot output high level signal higher than the working voltage of MCU, and the requirement of output signal cannot be completely satisfied.(2) build MOS pipe drive circuit and output high level signal, this method has the requirement to the voltage and current of input high level signal, otherwise MOS pipe cannot be turned on, and the requirement of input signal cannot be completely satisfied.

[0003] In the process of realizing the utility model, the applicant finds at least the following problems in the prior art.

[0004] The circuit adaptation mode of high level input signal conversion high level output signal is not flexible, has the requirement to the voltage and current of input signal and the voltage of output signal, and is inconvenient to use. UTILITY MODEL CONTENTS

[0005] The utility model discloses a circuit of high level input signal conversion high level output signal to solve the circuit adaptation mode of high level input signal conversion high level output signal in prior art is not flexible, has the requirement to the voltage and current of input signal and the voltage of output signal, and the technical problem of inconvenient use, and the preferred technical scheme of many technical schemes provided by the utility model can produce many technical effects, which are described below.

[0006] To achieve the above object, the utility model provides the following technical scheme.

[0007] The utility model provides a circuit of high level input signal conversion high level output signal, including control end, control signal input end and multichannel relay output circuit, control signal input end with control end is connected, multichannel relay output circuit with control signal input end is connected, control end is based on high level input signal and produces control signal, control signal input end according to control signal and turns on or turns off multichannel relay output circuit, and the conduction or turn-off of multiple high level output signals is carried out.

[0008] Preferably, the control end outputs the control signal by detecting the high level input signal.

[0009] Preferably, the control end comprises an MCU and a sampling circuit, the sampling circuit is connected with the input end of the MCU, and is used for detecting the conduction or shutdown of the high-level input signal; and the output end of the MCU is connected with the control signal input end.

[0010] Preferably, the sampling circuit comprises a sampling input end, an NPN triode, and a sampling output end, the sampling input end is connected with the base of the NPN triode, the sampling output end is connected with the collector of the NPN triode, the emitter of the NPN triode is grounded, and the collector of the NPN triode is further connected with a 3.3V power supply.

[0011] Preferably, the sampling input end is connected with the multi-way relay output circuit, and the sampling output end is connected with the MCU.

[0012] Preferably, the relays of the multi-way relay output circuit are used for isolating external impacts of the MCU.

[0013] Preferably, the multi-way relay output circuit comprises a first relay output circuit, a second relay output circuit, a third relay output circuit and a fourth relay output circuit, and the first relay output circuit, the second relay output circuit, the third relay output circuit and the fourth relay output circuit are respectively provided with a first relay K1, a second relay K2, a third relay K3 and a fourth relay K4.

[0014] Preferably, the first relay K1, the second relay K2 and the third relay K3 are respectively provided with an output end HIGH_OUT1, an output end HIGH_OUT2 and an output end HIGH_OUT3, and the fourth relay K4 is provided with an output end HIGH_OUT4 and an output end HIGH_OUT5.

[0015] Preferably, after the relay coils of the first relay K1, the second relay K2, the third relay K3 and the fourth relay K4 are attracted, the output end HIGH_OUT1, the output end HIGH_OUT2, the output end HIGH_OUT3 and the output end HIGH_OUT4 all output high-level signals, and the output end HIGH_OUT5 outputs a low-level signal.

[0016] Preferably, the control signal input end drives the multi-way relay output circuit by using a Darlington tube.

[0017] The above technical scheme of the utility model has the following advantages or beneficial effects:

[0018] The utility model discloses a control signal input end realizes the high level input signal of on-demand enable and disable, has improved the flexibility of high level drive signal configuration, and the design of control signal input end and multichannel relay has reduced the voltage current of input signal and the voltage requirement of output signal, and the working voltage of control end is no longer directly related, and it is more convenient to use, simultaneously, the input output isolation of multichannel relay enhances the anti -interference ability of circuit. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to make the technical scheme of the utility model embodiment more clear, the following will be briefly introduced the drawing needed to be used in the embodiment description, obviously, the drawing in the following description is only some embodiments of the utility model, for the ordinary skilled person in the art, under the premise of not paying the creative labor, still can obtain other drawings according to these drawings, and the drawings are as follows:

[0020] Figure 1 It is the connection circuit diagram of control signal input end and multichannel relay output circuit of the utility model embodiment;

[0021] Figure 2 It is the circuit diagram of control end of the utility model embodiment;

[0022] Figure 3 It is the circuit diagram of sampling circuit of the utility model embodiment;

[0023] Figure 4 It is the signal control flow process schematic diagram of the circuit of high level input signal conversion for high level output signal of the utility model embodiment. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantage of the utility model more clear, the various exemplary embodiments to be described in the following will be referred to the corresponding drawings, these drawings constitute a part of exemplary embodiments, wherein the various exemplary embodiments possibly used to realize the utility model are described.The same numerals in different drawings represent the same or similar elements unless otherwise indicated.The implementation described in the following exemplary embodiments does not represent all the implementations consistent with the present disclosure.It should be understood that they are only examples of processes, methods and devices etc.consistent with some aspects of the utility model disclosed as detailed in the appended claims, and other implementations can be used, or the implementation listed in the text can be modified in structure and function without departing from the scope and essence of the utility model.

[0025] In order to illustrate the technical scheme described in the utility model, the following will be explained by specific embodiments, only the part related to the utility model embodiment is shown.

[0026] Embodiment:

[0027] As shown in Figure 1 The utility model provides a kind of circuit of high level input signal conversion high level output signal, including control end, control signal input end and multipath relay output circuit, control signal input end is connected with control end, multipath relay output circuit is connected with control signal input end;Control end generates control signal based on high level input signal, control signal input end is according to control signal to turn on or turn off multipath relay output circuit, and the turn-on or turn-off of multiple high level output signals is carried out.The utility model realizes the on-demand activation and disablement of multiple high level input signals by control signal input end, improves the flexibility of high level drive signal configuration, and the design of control signal input end and multipath relay reduces the voltage and current of input signal and the voltage requirement of output signal, and the working voltage of control end is no longer directly related, it is more convenient to use, simultaneously, the input-output isolation of multipath relay enhances the anti-interference ability of circuit.

[0028] As optional implementation, control end outputs control signal by detecting high level input signal.As Figure 2 、 Figure 3 As shown, control end includes MCU and sampling circuit, sampling circuit is connected with MCU, for detecting the turn-on or turn-off of high level input signal, to realize the feedback of high level output, ensure the correct output of high level signal, and the output end of MCU is connected with control signal input end.Specifically, the output end of MCU is connected with control signal input end by HIGH_OUT1_EN pin, HIGH_OUT2_EN pin, HIGH_OUT3_EN pin, HIGH_OUT4_EN pin.

[0029] As optional implementation, as shown in Figure 3 Sampling circuit includes sampling input end (HIGH_IN end), NPN triode, sampling output end (HIGH_DETECTION end), sampling input end is connected with the base of NPN triode, and current-limiting resistor and stabilizing diode are further connected between sampling input end and the base of NPN triode, sampling output end is connected with the collector of NPN triode, NPN triode emitter is grounded, and 3.3V power supply is further connected with the collector of NPN triode.When sampling input end outputs high level, NPN triode is turned on, and sampling output end detects current signal.Sampling input end is connected with multipath relay output circuit, specifically, the output end of each relay, to realize the feedback of output level signal, and sampling output end is connected with MCU, to determine whether multipath relay output circuit outputs high level signal correctly.

[0030] As an optional implementation, the relays of the multi-channel relay output circuit are used to isolate external impacts of the MCU, such as impacts of high current or high voltage in transient, so as to avoid damage of the MCU chip by the external impacts.

[0031] As an optional implementation, as shown in Figure 1 The multi-channel relay output circuit includes a first relay output circuit, a second relay output circuit, a third relay output circuit and a fourth relay output circuit, and the first relay output circuit, the second relay output circuit, the third relay output circuit and the fourth relay output circuit are respectively provided with a first relay K1, a second relay K2, a third relay K3 and a fourth relay K4. The first relay K1, the second relay K2 and the third relay K3 are respectively provided with an output end HIGH_OUT1, an output end HIGH_OUT2 and an output end HIGH_OUT3, and the fourth relay K4 is provided with an output end HIGH_OUT4 and an output end HIGH_OUT5. The first relay K1, the second relay K2, the third relay K3 and the fourth relay K4 are also provided with an output end HIGH_IN, and the output end HIGH_IN is connected with a sampling input end of a sampling circuit. After the electromagnetic coils of the first relay K1, the second relay K2, the third relay K3 and the fourth relay K4 are closed, the output end HIGH_IN of the first relay K1, the second relay K2, the third relay K3 and the fourth relay K4 is respectively connected with the output end HIGH_OUT1, the output end HIGH_OUT2, the output end HIGH_OUT3 and the output end HIGH_OUT4, so as to output the same level signal, and the sampling circuit realizes sampling of the output level.

[0032] As an optional implementation, after the relays of the first relay K1, the second relay K2, the third relay K3 and the fourth relay K4 are attracted, the output end HIGH_OUT1, the output end HIGH_OUT2, the output end HIGH_OUT3 and the output end HIGH_OUT4 all output high level signals, and the output end HIGH_OUT5 outputs a low level signal.

[0033] As an optional implementation, the control signal input end adopts a Darlington tube to drive the multi-channel relay output circuit. The Darlington tube has the advantages of high amplification, high input resistance and high stability compared with a common triode, and the isolation and driving capacity are increased.

[0034] The embodiment is only a specific example, and does not indicate that the utility model is only implemented in this way.

[0035] The above merely describes preferred embodiments of the present application, and those skilled in the art know that various changes or equivalent replacements can be made to the features and embodiments without departing from the spirit and scope of the present application. In addition, the features and embodiments can be modified to adapt to specific conditions and materials under the guidance of the present application without departing from the spirit and scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application belong to the protection scope of the present application.

Claims

1. A circuit for converting a high level input signal into a high level output signal, characterized by, The control terminal, the control signal input terminal and the multi-relay output circuit are connected, the control signal input terminal and the control terminal are connected, and the multi-relay output circuit and the control signal input terminal are connected; the control terminal generates a control signal based on a high-level input signal, and the control signal input terminal turns on or turns off the multi-relay output circuit according to the control signal to turn on or turn off multiple high-level output signals.

2. The circuit for converting a high level input signal into a high level output signal according to claim 1, wherein, The control terminal outputs the control signal by detecting the high-level input signal.

3. The circuit for converting a high level input signal into a high level output signal according to claim 2, wherein, The control terminal includes an MCU and a sampling circuit, the sampling circuit is connected with the input terminal of the MCU, and is used for detecting the turn-on or turn-off of the high-level input signal, and the output terminal of the MCU is connected with the control signal input terminal.

4. The circuit for converting a high level input signal into a high level output signal according to claim 3, wherein, The sampling circuit includes a sampling input terminal, an NPN transistor, a sampling output terminal, the sampling input terminal is connected with the base of the NPN transistor, the sampling output terminal is connected with the collector of the NPN transistor, the emitter of the NPN transistor is grounded, and the collector of the NPN transistor is further connected with a 3.3V power supply.

5. The circuit for converting a high level input signal into a high level output signal according to claim 4, wherein, The sampling input terminal is connected with the multi-relay output circuit, and the sampling output terminal is connected with the MCU.

6. The circuit for converting a high level input signal into a high level output signal according to claim 3, wherein, The relay of the multi-relay output circuit is used for isolating the external impact of the MCU.

7. The circuit for converting a high level input signal into a high level output signal according to any one of claims 1 to 6, characterized in that, The multi-relay output circuit includes a first relay output circuit, a second relay output circuit, a third relay output circuit and a fourth relay output circuit, and the first relay output circuit, the second relay output circuit, the third relay output circuit and the fourth relay output circuit are respectively provided with a first relay K1, a second relay K2, a third relay K3 and a fourth relay K4.

8. The circuit for converting a high level input signal into a high level output signal according to claim 7, wherein, The first relay K1, the second relay K2 and the third relay K3 are respectively provided with an output terminal HIGH_OUT1, an output terminal HIGH_OUT2 and an output terminal HIGH_OUT3, and the fourth relay K4 is provided with an output terminal HIGH_OUT4 and an output terminal HIGH_OUT5.

9. The circuit for converting a high level input signal into a high level output signal according to claim 8, wherein, After the relay coils of the first relay K1, the second relay K2, the third relay K3 and the fourth relay K4 are attracted, the output terminal HIGH_OUT1, the output terminal HIGH_OUT2, the output terminal HIGH_OUT3 and the output terminal HIGH_OUT4 all output high-level signals, and the output terminal HIGH_OUT5 outputs a low-level signal.

10. The circuit for converting a high level input signal into a high level output signal according to claim 1, wherein, The control signal input terminal drives the multi-relay output circuit by using a Darlington tube.

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