Signal conversion circuit capable of converting monopole control into bipolar control

Abstract

The invention provides a signal conversion circuit capable of changing unipolar control into bipolar control. The signal conversion circuit comprises a time delay circuit and a level conversion circuit, the delay circuit comprises a capacitor and a first resistor which are connected in parallel, one ends of the capacitor and the first resistor are electrically connected to the first signal line, and the other ends are grounded; the level conversion circuit comprises a triode, the base electrode of the triode is electrically connected with a second signal line, the collector electrode of the triode is electrically connected with one end of a second resistor, the other end of the second resistor is electrically connected with the positive electrode of the control electrode, the emitter electrode of the triode is electrically connected with one end of a third resistor, and the other end of the third resistor is grounded. The collector electrode of the triode is electrically connected with an output signal line. Synchronization of bipolar control signals is achieved through the time delay circuit, and the situation that the circuit cannot work normally due to the fact that bipolar signals are not synchronous is avoided. And level conversion is realized through switching on and switching off of the triodes, single-pole control is changed into double-pole control, and the stability of control signals is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of signal conversion circuits, and particularly relates to a signal conversion circuit for changing single-pole control to bipolar control. Background Art

[0002] As an important part of a fully electronic fuse, whether the boost energy release module can act at an appropriate time point is particularly crucial. Usually, a dual-channel signal is used as the firing signal to control the driver to output high and low levels to control the module to fire, so as to avoid misoperation of the module caused by interference of a certain channel signal. Compared with single-pole control, bipolar control has higher control accuracy, more stable performance, and stronger anti-interference ability. However, not all adapted controllers provide bipolar control. For the case where only a single-channel firing signal is provided, once the single-channel signal is interfered and the module misoperates, extremely serious consequences will occur. For the case where only a single-channel firing signal is provided, the circuit usually used is that the high-effective end of the driver accesses the control signal, and the low-effective end of the driver is grounded. At this time, once the control signal changes due to interference, the signal output by the driver will also change accordingly, resulting in misoperation of the module.

[0003] Therefore, it is particularly important to solve the problem of weak anti-interference ability of the single-pole control signal and improve the reliability of the module. Summary of the Invention

[0004] The present invention provides a signal conversion circuit for changing single-pole control to bipolar control, which solves the problems of weak anti-interference ability of the single-pole control signal and poor reliability in the prior art.

[0005] The technical solution of the present invention is implemented as follows:

[0006] A signal conversion circuit for changing single-pole control to bipolar control includes a delay circuit and a level conversion circuit; the delay circuit includes a capacitor and a first resistor connected in parallel. One end of the capacitor and the first resistor is electrically connected to the first signal line, and the other end of the capacitor and the first resistor is grounded; the level conversion circuit includes a triode, a second resistor, and a third resistor. The base of the triode is electrically connected to the second signal line. The collector of the triode is electrically connected to one end of the second resistor, the other end of the second resistor is electrically connected to the control positive electrode, the emitter of the triode is electrically connected to one end of the third resistor, the other end of the third resistor is grounded, and the collector of the triode is also electrically connected to an output signal line.

[0007] Preferably, the resistance value of the second resistor is greater than that of the third resistor.

[0008] Preferably, one end of the first signal line is the signal input end, and the other end is the signal output end. The signal input end and the second signal line are both electrically connected to the control signal line.

[0009] Preferably, both the signal output terminal and the output signal line are electrically connected to the driver. Specifically, the signal output terminal is electrically connected to the high-effective terminal of the driver, and the output signal line is electrically connected to the low-effective terminal of the driver.

[0010] Preferably, the driver is electrically connected to the firing module.

[0011] Advantages of the present invention: When the present invention works, the control signal is respectively input into the delay circuit and the level conversion circuit from the control signal line. After processing, the signal output terminal outputs the control signal 1, and the output signal line outputs the control signal 2. Among them, for the delay circuit, when the initially input control signal is at a low level, the control signal 1 is also at a low level; when the firing module needs to act, the control signal becomes a high level, and the control signal 1 will output a high level after the delay time arrives. When the high-level time arrives, the control signal changes back to a low level, and the control signal 1 also becomes a low level. Among them, for the level conversion circuit, when the initially input control signal is at a low level, the triode is not conducting at this time. Due to the second resistor being connected to the positive pole of the control power supply, affected by the pull-up second resistor, the control signal 2 outputs a high level; when the firing module needs to act, the control signal becomes a high level, and at this time the triode conducts. Affected by the second resistor and the third resistor, the control signal 2 outputs a low level. When the high-level time arrives, the control signal changes back to a low level, and at this time the triode turns off, and the control signal 2 outputs a high level. The control signal 1 is connected to the high-effective terminal of the driver, and the control signal 2 is connected to the low-effective terminal of the driver. When the control signal is at a low level, the control signal 1 is at a low level, and the control signal 2 is at a high level. At this time, the driver outputs a low level, and the firing module does not act; when the control signal is at a high level, the control signal 1 is at a high level, and the control signal 2 is at a low level. At this time, the driver outputs a high level, and the firing module acts.

[0012] The present invention divides the input control signal into two paths and inputs them into the delay circuit and the level conversion circuit simultaneously. After being processed by the two circuit modules, it realizes the synchronous output of two complementary signals. Among them, the delay circuit is used to maintain the level of the received control signal and perform delay to achieve the synchronism of the output signal; the level conversion circuit is used to invert the received control signal to achieve the output of complementary signals.

[0013] The synchronism of the bipolar control signal is realized through the delay circuit, avoiding the situation that the circuit cannot work properly due to the asynchronism of the bipolar signal. Through the conduction and turn-off of the triode, the level conversion is realized, changing the unipolar control to bipolar control, effectively improving the stability of the control signal.

[0014] In summary, the present invention realizes a signal conversion circuit that changes from single-pole control to bipolar control through a delay circuit and a level conversion circuit, and through the cooperation with a driver and a firing module, realizes the precise control of the module action time, solves the problem of weak anti-interference ability of single-pole control signals, and improves the reliability of the module. Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0016] Figure 1 It is the structural block diagram of Embodiment 1;

[0017] Figure 2 It is the circuit diagram of the delay circuit in Embodiment 1;

[0018] Figure 3 It is the circuit diagram of the level conversion circuit in Embodiment 1;

[0019] Figure 4 It is the structural block diagram of Embodiment 2.

[0020] In the figure: capacitor C, first resistor R1, first signal line L1, signal input terminal L11, signal output terminal L12, triode Q, second resistor R2, third resistor R3, second signal line L2, output signal line L3, control signal line L. Detailed Embodiments

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0022] Embodiment 1

[0023] Refer to Figures 1-3, a signal conversion circuit that changes from single - pole control to bipolar control, including a delay circuit and a level conversion circuit; the delay circuit includes a capacitor C and a first resistor R1 connected in parallel. One end of the capacitor C and the first resistor R1 are both electrically connected to the first signal line L1, and the other ends of the capacitor C and the first resistor R1 are both grounded; the level conversion circuit includes a triode Q, a second resistor R2, and a third resistor R3. The base of the triode Q is electrically connected to a second signal line L2. The collector of the triode Q is electrically connected to one end of the second resistor R2, the other end of the second resistor R2 is electrically connected to the control positive electrode, the emitter of the triode Q is electrically connected to one end of the third resistor R3, the other end of the third resistor R3 is grounded, and the collector of the triode Q is also electrically connected to an output signal line L3.

[0024] Wherein, the resistance value of the second resistor R2 is greater than that of the third resistor R3.

[0025] Wherein, one end of the first signal line L1 is a signal input terminal L11, and the other end is a signal output terminal L12. The signal input terminal L11 and the second signal line L2 are both electrically connected to the control signal line L.

[0026] Embodiment 2

[0027] Referring to Figure 4 , the difference between this embodiment and Embodiment 1 is that: the signal output terminal L12 and the output signal line L3 are both electrically connected to a driver, and the driver is electrically connected to a firing module. Specifically, the signal output terminal L12 is electrically connected to the high - effective end of the driver, and the output signal line L3 is electrically connected to the low - effective end of the driver.

[0028] When the present invention works, the control signal is respectively input into the delay circuit and the level conversion circuit from the control signal line L. After processing, the control signal 1 is output from the signal output terminal L12, and the control signal 2 is output from the output signal line L3. Among them, for the delay circuit, when the input control signal is initially at a low level, the control signal 1 is also at a low level; when the firing module needs to act, the control signal becomes a high level, and the control signal 1 will output a high level after the delay time arrives. When the high-level time arrives, the control signal changes back to a low level, and the control signal 1 also becomes a low level. Among them, for the level conversion circuit, when the input control signal is initially at a low level, the triode Q is not conducting at this time. Due to the second resistor R2 being connected to the positive pole of the control power supply, affected by the pull-up second resistor R2, the control signal 2 outputs a high level; when the firing module needs to act, the control signal becomes a high level. At this time, the triode Q conducts, and affected by the second resistor R2 and the third resistor R3, the control signal 2 outputs a low level. When the high-level time arrives, the control signal changes back to a low level. At this time, the triode Q is turned off, and the control signal 2 outputs a high level. The control signal 1 is connected to the high-effective end of the driver, and the control signal 2 is connected to the low-effective end of the driver. When the control signal is at a low level, the control signal 1 is at a low level, and the control signal 2 is at a high level. At this time, the driver outputs a low level, and the firing module does not act; when the control signal is at a high level, the control signal 1 is at a high level, and the control signal 2 is at a low level. At this time, the driver outputs a high level, and the firing module acts.

[0029] The present invention divides the input control signal into two paths and inputs them into the delay circuit and the level conversion circuit simultaneously. After being processed by the two circuit modules, the synchronous output of two complementary signals is realized. Among them, the delay circuit is used to maintain the level of the received control signal and perform delay to achieve the synchronization of the output signal; the level conversion circuit is used to invert the received control signal to achieve the output of complementary signals.

[0030] The synchronization of the bipolar control signal is realized through the delay circuit, avoiding the situation where the circuit cannot work properly due to the asynchrony of the bipolar signals. Through the conduction and cut-off of the triode, the level conversion is realized, changing the unipolar control to bipolar control, effectively improving the stability of the control signal.

[0031] In summary, the present invention realizes a signal conversion circuit that changes from unipolar control to bipolar control through the delay circuit and the level conversion circuit, and through the cooperation with the driver and the firing module, realizes the precise control of the module action time, solves the problem of weak anti-interference ability of the unipolar control signal, and improves the reliability of the module.

[0032] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A signal conversion circuit for changing single-pole control to bipolar control, characterized in that: It includes a delay circuit and a level conversion circuit; The delay circuit includes a capacitor and a first resistor connected in parallel. One end of the capacitor and the first resistor are both electrically connected to the first signal line, and the other end of the capacitor and the first resistor are both grounded; The level conversion circuit includes a triode, a second resistor and a third resistor. The base of the triode is electrically connected to a second signal line. The collector of the triode is electrically connected to one end of the second resistor. The other end of the second resistor is electrically connected to the control power supply positive electrode. The emitter of the triode is electrically connected to one end of the third resistor. The other end of the third resistor is grounded. The collector of the triode is also electrically connected to an output signal line.

2. The signal conversion circuit for converting the single-pole control driver as described in claim 1 into a bipolar control, characterized in that: The resistance value of the second resistor is greater than that of the third resistor.

3. The signal conversion circuit for converting the single-pole control driver according to claim 1 or 2 into a bipolar control, characterized in that: One end of the first signal line is the signal input end, and the other end is the signal output end. The signal input end and the second signal line are both electrically connected to the control signal line.

4. The signal conversion circuit for changing from unipolar control to bipolar control as described in claim 3, wherein: The signal output end and the output signal line are both electrically connected to the driver.

5. The signal conversion circuit for changing from single-pole control to bipolar control as described in claim 4, wherein: The driver is electrically connected to the firing module.

6. The signal conversion circuit for converting single-pole control to bipolar control according to claim 4, characterized in that: The signal output end is electrically connected to the high-effective end of the driver, and the output signal line is electrically connected to the low-effective end of the driver.

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