CN215731499U - Solid relay based on energy delay discrimination circuit - Google Patents
Solid relay based on energy delay discrimination circuit Download PDFInfo
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- CN215731499U CN215731499U CN202120811490.9U CN202120811490U CN215731499U CN 215731499 U CN215731499 U CN 215731499U CN 202120811490 U CN202120811490 U CN 202120811490U CN 215731499 U CN215731499 U CN 215731499U
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Abstract
The utility model discloses a solid relay based on an energy delay distinguishing circuit, which comprises a relay body and the energy delay distinguishing circuit, wherein the circuit comprises resistors R1-R8, a capacitor C1, voltage stabilizing diodes V1-V2, comparators N1-N2 and a field effect tube Q1; the delay circuit weakens the influence of resistance errors through the geometric relation of charging voltage, and prevents the relay drive circuit from being triggered by mistake in the delay distinguishing process by adopting the method of keeping Q1 on in the delay distinguishing process, the effect of the delay circuit is similar to the effect of static friction and dynamic friction, when the drive energy of the product input signal is enough, the complete on of the output of the relay can be ensured inevitably, and the semi-conductive condition of the solid relay caused by insufficient drive capability of the input signal is avoided.
Description
Technical Field
The utility model belongs to the technical field of solid relays, and particularly relates to a solid relay based on an energy delay judging circuit.
Background
The ignition relay is one of key elements in the initiating explosive device, and reliable action is an important factor for ensuring the working reliability of the initiating explosive device. Ignition relays are all electromagnetic relays initially, but with the development and application of technologies, solid relays are adopted in the control of initiating explosive devices in many new generations of weaponry in China. However, the working environment of the initiating explosive device is complex and various, and the initiating explosive device is required to have proper sensitivity to ensure the reliable work under the severe military impact, vibration and temperature environment. The sensitivity is too high, so that the product can be ignited when not being ignited, and the safety is not easy to ensure; if the sensitivity is too low, the system will fail due to the failure of normal start-up. However, the input current of the solid-state relay is generally only a few milliamperes or a dozen milliamperes, the input voltage is generally 5V, and the solid-state relay cannot be suitable for a complex and variable external working environment, so that an additional control circuit needs to be added for suppression in order to avoid misconduction caused by interference of external signals, and the complexity of an initiating explosive device control system is improved. In order to reduce the complexity of an initiating explosive device control system, it is necessary to research a solid relay special for ignition having an energy delay judging function.
At present, most of input voltage of the domestic solid relay market is 5V, the maximum on-voltage is generally only 3.6V, and the interference on a driving signal cannot be well inhibited; when the electromagnetic interference signal of the input end is larger or the ground wire drifts, the error conduction of the relay is easy to occur. With the expansion of the market, most manufacturers research and develop a 28V solid relay, and the on-off voltage of the product is improved to improve the resistance of an interference signal; some manufacturers have the capability of enhancing the anti-electromagnetic interference capability by improving the input voltage and delaying the control, but the inhibition capability is still limited, and the method of simply improving the input on-off voltage and delaying the input on-off voltage in the process of each test only improves the voltage identification capability of the signal, so that the driving current of the signal cannot be effectively judged, and the interference signal with larger trigger energy cannot be inhibited because the energy of the interference signal cannot be effectively released and judged.
According to the market circuit mastered at present, the solid-state relay in the existing market still has an unavoidable problem, namely the problem has a critical voltage and current condition to cause the output of the product to have a semi-conduction state, and the state is an important factor causing the solid-state relay to fail.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the present invention is to overcome the existing defects, and provide a solid-state relay based on an energy delay discrimination circuit to solve the problem that the driving current of a signal cannot be effectively discriminated as proposed in the background art.
In order to achieve the purpose, the utility model provides the following technical scheme: a solid relay based on energy delay discrimination circuit comprises a relay body and an energy delay discrimination circuit, wherein the relay body consists of a tube seat, a tube cap, an output power core group, an input voltage limiting circuit board and a delay discrimination and driving circuit board, the output power core group, the input voltage limiting circuit board and the delay discrimination and driving circuit board in the relay body are respectively connected with leads of the tube seat, all circuits and devices are sealed in a cavity by the tube seat and the tube cap, the circuit comprises resistors R1-R8, a capacitor C1, voltage stabilizing diodes V1-V2, comparators N1-N2 and a field effect tube Q1, whether the input voltage of a product meets a voltage condition is judged by using the resistance voltage dividing relation of the input end of the comparator N1, and the delay time of the product is determined by using the charging coefficients of the capacitor C1 and the resistor R6; the driving energy of the input signal is judged by comparing the resistor R8 with the internal resistance of the input signal when the field effect transistor Q1 is switched on.
Preferably, when the fet Q1 is turned on, the power supply voltage of the comparator is the divided voltage of the resistor R8 and the internal resistance of the input signal, and if and only if the divided voltage of the resistor R8 is high enough, the positive input terminal of the comparator N1 adopts the divided voltage of the resistors R4 and R5 to reach the on-voltage value, thereby controlling the subsequent stage to further operate.
Preferably, two measures are adopted to improve the accuracy of the time delay, the first measure is that the positive input end and the negative input end of the comparator N2 adopt the same power supply voltage, the temperature drift caused by the self error of the resistor is weakened by utilizing the equal ratio relation of the resistor, and the second measure is that the capacitance of the negative input end adopts a class I ceramic capacitor with small temperature drift coefficient, so that the accuracy of the time delay is improved.
Preferably, the field effect transistor Q1 is used, and its main function is to utilize the low on-resistance characteristic of the field effect transistor Q1 to short circuit the driving circuit of the subsequent stage when the delay time determination circuit works, so as to achieve the purpose that the relay output is not turned on in the energy delay time determination process.
Compared with the prior art, the utility model provides a solid relay based on an energy delay distinguishing circuit, which has the following beneficial effects:
the utility model weakens the influence of the self error of the resistance through the geometric relation of the charging voltage by the time delay circuit, the judgment circuit realizes the judgment of the signal driving capability by utilizing the voltage division relation of the resistance R8 and the signal internal resistance, the real energy judgment is realized, but not the simple voltage or current judgment, in addition, the Q1 is kept in a conducting state in the time delay judgment process, the false triggering of the relay caused in the time delay judgment process of the relay driving circuit is prevented, simultaneously, the effect is similar to the effect of static friction force and dynamic friction force due to the setting of the energy judgment condition, when the product input signal driving energy is enough, the complete conduction of the output of the relay can be ensured inevitably, and the semi-conducting condition of the solid relay caused by the insufficient driving capability of the input signal is avoided.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model without limiting the utility model in which:
fig. 1 is a schematic structural diagram of a solid-state relay based on an energy delay discrimination circuit according to the present invention;
FIG. 2 is a schematic block diagram of a solid state relay based on an energy delay discriminating circuit according to the present invention;
fig. 3 is a schematic block diagram of a voltage limiting circuit and an energy delay discriminating circuit of a solid state relay based on an energy delay discriminating circuit according to the present invention;
fig. 4 is a schematic block diagram of an isolation driving circuit of a solid-state relay based on an energy delay judging circuit provided by the utility model;
fig. 5 is a schematic block diagram of a typical application circuit of the solid-state relay based on the energy delay judging circuit.
In the figure: 1. a tube holder; 2. a pipe cap; 3. outputting a power core group; 4. an input voltage limiting circuit board; 5. and a delay judging and driving circuit board.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, the present invention provides the following technical solutions: a solid relay based on an energy delay distinguishing circuit comprises a relay body and the energy delay distinguishing circuit, wherein the circuit comprises resistors R1-R8, a capacitor C1, voltage stabilizing diodes V1-V2, comparators N1-N2 and a field effect tube Q1, whether the input voltage of a product meets a voltage condition is judged by using the resistance voltage division relation of the input end of the comparator N1, and the delay time of the product is determined by using the charging coefficients of the capacitor C1 and the resistor R6; the driving energy of an input signal is judged by comparing a resistor R8 with the internal resistance of the input signal when a field effect transistor Q1 is switched on, a relay body consists of a tube seat 1, a tube cap 2, an output power core group 3, an input voltage limiting circuit board 4 and a delay judging and driving circuit board 5, the output power core group 3, the input voltage limiting circuit board 4 and the delay judging and driving circuit board 5 of the relay body are respectively connected with leads of the tube seat, and all circuits and devices are sealed into a cavity by the tube seat 1 and the tube cap 2.
In the utility model, when the field effect transistor Q1 is switched on, the power supply voltage of the comparator is the voltage on the resistor R8, the voltage needs to satisfy the divided voltage of the resistor R8 and the internal resistance of the input signal, and if and only if the divided voltage of the resistor R8 is high enough, the positive input end of the comparator N1 adopts the divided voltage of the resistors R4 and R5 to reach the switching-on voltage value, thereby controlling the further action of the later stage.
In the utility model, two means are adopted to improve the accuracy of time delay, namely, the positive input end and the negative input end of the comparator N2 adopt the same power supply voltage, the error of the resistor is weakened by utilizing the equal ratio relation of the resistor, and the negative input end capacitor adopts a class I ceramic capacitor with small temperature drift coefficient, so that the accuracy of time delay is improved.
In the utility model, the field effect transistor Q1 is adopted, and the main function is to utilize the low on-resistance characteristic of the field effect transistor Q1 to short circuit a drive circuit at the later stage when the delay judging circuit works, thereby realizing the purpose that the output of the relay is not switched on in the energy delay judging process.
Example of typical application one:
a solid relay based on an energy delay judging circuit adopts the energy delay judging circuit shown in figure 1, the circuit comprises resistors R1-R8, a capacitor C1, voltage stabilizing diodes V1-V2, comparators N1-N2 and a field effect tube Q1, whether the input voltage of a product meets a voltage condition is judged by using the resistance voltage dividing relation of the input end of the comparator N1, and the delay time of the product is determined by using the charging coefficients of the capacitor C1 and the resistor R2; the driving energy of the input signal is judged by comparing the resistor R8 with the internal resistance of the input signal when the field effect transistor Q1 is switched on.
When the field effect transistor Q1 is switched on, the power supply voltage of the comparator is the divided voltage of the resistor R8 and the internal resistance of the input signal, and if and only if the divided voltage of the resistor R8 is high enough, the positive input end of the comparator N1 adopts the divided voltage of the resistors R4 and R5 to reach the switch-on voltage value, thereby controlling the subsequent stage to further act.
The accuracy of time delay is improved by adopting two means, namely, the positive input end and the negative input end of a comparator N2 adopt the same power supply voltage, the error of the resistor is weakened by utilizing the equal ratio relation of the resistor, and the capacitance of the negative input end adopts a class I ceramic capacitor with small temperature drift coefficient, so that the accuracy of time delay is improved.
The field effect transistor Q1 is adopted, and the main function is that when the time delay judging circuit works, the low on-resistance characteristic of the field effect transistor Q1 is utilized to short circuit a drive circuit at the later stage, so that the purpose that the output of the relay is not connected in the energy time delay judging process is realized.
The relay body consists of a tube seat 1, a tube cap 2, an output power core group 3, an input voltage limiting circuit board 4 and a time delay distinguishing and driving circuit board 5. An output power core group 3, an input voltage limiting circuit board 4 and a time delay distinguishing and driving circuit board 5 in the relay are respectively connected with the lead wires of the tube seat, and all circuits and devices are sealed in the cavity by the tube seat 1 and the tube cap 2.
The solid relay adopts a voltage limiting circuit, a delay judging circuit, an oscillating circuit and a driving circuit, the schematic diagrams of the circuits are respectively shown in fig. 3 and fig. 4, as shown in fig. 3, the product forms the voltage limiting circuit by combining a diode V1, a triode V2, a resistor R1 and a voltage stabilizing diode V3-V6, and when the input voltage is lower than the sum of voltage stabilizing values of V3-V6, the output voltage of the voltage limiting circuit rises along with the rise of the input voltage; when the input voltage is higher than the sum of the regulated voltage values, the output of the voltage limiting circuit limits the sum of the regulated voltage values from V3 to V6 minus the PN junction voltage drop of V2, and the voltage is controlled to be about 25V. The time delay judging circuit judges the energy time delay of the input signal, when the signal meets the connection condition, a field effect tube V9 in the time delay judging circuit is switched off, and the output voltage VDD signal drives the rear stage to work.
As shown in FIG. 3, the product is limited in current by a resistor R10 and stabilized in voltage by a capacitor C3, and the signal is transmitted to an oscillating circuit. The primary winding of the transformer T1 adopts a single group of windings, the output of the transformer T1 adopts a double group of windings, and the transformer driving type solid relay with the single group of input driving two groups of isolated outputs simultaneously is realized.
Example two of typical applications:
a solid relay based on an energy delay judging circuit adopts the energy delay judging circuit shown in figure 1, the circuit comprises resistors R1-R8, a capacitor C1, voltage stabilizing diodes V1-V2, comparators N1-N2 and a field effect tube Q1, whether the input voltage of a product meets a voltage condition is judged by using the resistance voltage dividing relation of the input end of the comparator N1, and the delay time of the product is determined by using the charging coefficients of the capacitor C1 and the resistor R2; the driving energy of the input signal is judged by comparing the resistor R8 with the internal resistance of the input signal when the field effect transistor Q1 is switched on.
When the field effect transistor Q1 is switched on, the power supply voltage of the comparator is the divided voltage of the resistor R8, the resistor R8 and the internal resistance of the input signal, and when and only when the divided voltage of the resistor R8 is high enough, the positive input end of the comparator N1 adopts the divided voltage of the resistors R4 and R5 to reach a switching-on voltage value, so that the subsequent stage is controlled to further act.
The accuracy of time delay is improved by adopting two means, namely, the positive input end and the negative input end of a comparator N2 adopt the same power supply voltage, the error of the resistor is weakened by utilizing the equal ratio relation of the resistor, and the capacitance of the negative input end adopts a class I ceramic capacitor with small temperature drift coefficient, so that the accuracy of time delay is improved.
The field effect transistor Q1 is adopted, and the main function is that when the time delay judging circuit works, the low on-resistance characteristic of the field effect transistor Q1 is utilized to short circuit a drive circuit at the later stage, so that the purpose that the output of the relay is not connected in the energy time delay judging process is realized.
The relay body consists of a tube seat 1, a tube cap 2, an output power core group 3, an input voltage limiting circuit board 4 and a time delay distinguishing and driving circuit board 5. An output power core group 3, an input voltage limiting circuit board 4 and a time delay distinguishing and driving circuit board 5 in the relay are respectively connected with the lead wires of the tube seat, and all circuits and devices are sealed in the cavity by the tube seat 1 and the tube cap 2.
The solid relay adopts a time delay discrimination circuit and a photovoltaic combined driving circuit, and the schematic diagrams of the circuits are respectively shown in fig. 5. The front stage of the relay adopts a delay discrimination circuit, and the rear stage drives a plurality of field effect transistors with mutually isolated multi-stage outputs in a mode of connecting a plurality of groups of photovoltaic in series through a resistor, so that the solid relay which realizes single-group input and controls a plurality of groups of outputs simultaneously is achieved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (1)
1. The solid relay based on the energy delay distinguishing circuit is characterized by comprising a relay body and an energy delay distinguishing circuit, wherein the relay body consists of a tube seat (1), a tube cap (2), an output power core group (3), an input voltage limiting circuit board (4) and a delay distinguishing and driving circuit board (5), the output power core group (3), the input voltage limiting circuit board (4) and the delay distinguishing and driving circuit board (5) in the relay body are respectively connected with leads of the tube seat (1), all circuits and devices are sealed in a cavity by the tube seat (1) and the tube cap (2), and the circuit comprises resistors R1-R8, a capacitor C1, voltage stabilizing diodes V1-V2, comparators N1-N2 and a field effect tube Q1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120811490.9U CN215731499U (en) | 2021-04-20 | 2021-04-20 | Solid relay based on energy delay discrimination circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120811490.9U CN215731499U (en) | 2021-04-20 | 2021-04-20 | Solid relay based on energy delay discrimination circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215731499U true CN215731499U (en) | 2022-02-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120811490.9U Expired - Fee Related CN215731499U (en) | 2021-04-20 | 2021-04-20 | Solid relay based on energy delay discrimination circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215731499U (en) |
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2021
- 2021-04-20 CN CN202120811490.9U patent/CN215731499U/en not_active Expired - Fee Related
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220201 |
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| CF01 | Termination of patent right due to non-payment of annual fee |