High-low level vehicle locking compatible circuit and electronic equipment
By designing a high- and low-level locking compatible circuit and using a level switching module and a signal processing module, the high- and low-level signal switching of the relay is realized, which solves the problem of only being able to output high and low levels separately in the existing technology, reduces costs and improves the maintainability of the system.
Patent Information
- Application Number
- CN202422875978.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-25
- Publication Date
- 2025-10-03
- Estimated Expiration
- 2034-11-25
AI Technical Summary
The existing relay locking circuit can only output high or low levels independently, which cannot adapt to the needs of different customers and leads to insufficient design flexibility.
A high- and low-level locking compatible circuit is designed. Through the level switching module and signal processing module, N/P channel MOS tubes and transistors are used to realize signal switching. The first and second signal sources are connected to control the relay to receive high-level or low-level signals.
The relay can simultaneously receive high-level and low-level signals for switching, which reduces the use of mechanical parts, reduces costs, and improves the maintainability and adaptability of the system.
Smart Images
Figure CN223414862U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of level locking circuits, and in particular to a high- and low-level locking circuit and electronic equipment. Background Art
[0002] With the continuous advancement of automotive electronics, vehicle safety and convenience have become a focus of attention. Traditional mechanical locking methods have limitations, such as being easily hackable and inconvenient to operate. Consequently, electronic locking systems have emerged. These electronically output high and low-level signals, which are then transmitted to a relay locking circuit. The relay locking circuit controls the locking and unlocking of the vehicle based on the signal status, improving vehicle safety and convenience. However, to meet different customer needs, it may be necessary to design both high-level and low-level locking circuits. Conventional relay locking circuits can only output either a single high-level or a single low-level signal.
[0003] Based on this, it is necessary to design a car locking circuit that can simultaneously switch the output high level or low level to adapt to different customer needs. Utility Model Content
[0004] In order to overcome the shortcomings of the existing technology, the present application provides a high- and low-level car locking compatible circuit and electronic equipment, and designs a car locking circuit that can simultaneously switch to output high level or low level to adapt to different customer needs.
[0005] The technical solution adopted by this application to solve its technical problems is:
[0006] In a first aspect, the present application provides a high- and low-level vehicle locking compatible circuit, comprising: a level switching module and a signal processing module;
[0007] The input end of the level switching module is connected to an external first signal source, the output end is connected to the first input end of the signal processing module, the output end of the signal processing module is connected to a relay; the second input end of the signal processing module is connected to an external second signal source;
[0008] The first signal source and the second signal source selectively send a high-level signal, and are used to control the signal processing module to send a low-level signal to the relay through the level switching module if the first signal source outputs a high level to the level switching module; and are also used to send a high-level signal to the relay through the signal processing module if the second signal source outputs a high level to the signal processing module.
[0009] Optionally, the level switching module includes a first resistor and a transistor;
[0010] One end of the first resistor is connected to the first signal source, and the other end is connected to the base of the transistor;
[0011] The collector of the transistor is connected to the first input terminal of the signal processing module, and the emitter is grounded.
[0012] Optionally, the signal processing module includes a MOS transistor, a second resistor, and a third resistor; the MOS transistor is an N / P channel MOS transistor;
[0013] The first gate of the MOS transistor is connected to one end of the second resistor and one end of the third resistor, and the other end of the second resistor is connected to the collector of the transistor;
[0014] The other end of the third resistor is connected to the first source of the MOS transistor and an external DC signal source, and the first drain of the MOS transistor is connected to the relay.
[0015] Optionally, the signal processing module further includes a fourth resistor and a fifth resistor;
[0016] The second gate of the MOS transistor is connected to one end of the fourth resistor and one end of the fifth resistor, and the other end of the fourth resistor is connected to the second signal source;
[0017] The other end of the fifth resistor is connected to the second source of the MOS transistor and the ground, and the second drain of the MOS transistor is connected to the relay.
[0018] Optionally, the signal processing module further includes a voltage regulator tube;
[0019] The cathode of the voltage regulator tube is connected to the connection point of the MOS tube and the relay, and the anode of the voltage regulator tube is grounded.
[0020] Optionally, the model of the voltage regulator tube is SMAJ36CA.
[0021] Optionally, the model of the MOS tube is AP2716QD.
[0022] Optionally, the model of the transistor is PDTC124ET.
[0023] In a second aspect, the present application provides an electronic device equipped with the above-mentioned high and low level vehicle locking compatible circuit.
[0024] The beneficial effects of the present application are as follows: the present application connects the first signal source and the second signal source, and adopts an N\P channel MOS to replace the low-level locking circuit and the high-level locking circuit originally used.
[0025] Specifically, if the requirement is that the relay receives a low level to lock the car, the first signal source sends a high level signal and the second signal source sends a low level signal, so that the first signal source turns on the transistor of the level switching module, pulls up the level of the first input end of the signal processing module, and because the second signal source does not output a high level, the output of the signal processing module is a low level signal, so that the relay is triggered by the low level;
[0026] In another case, if the snowball is a relay receiver, the second signal source sends a high-level signal and the first signal source sends a low-level signal, so that the transistor in the level switching module is not conducting. In this case, the level of the first input end of the signal processing module is pulled low, and the level of the second input end is pulled high, so that the output end of the signal processing module sends a high-level signal, thereby triggering the relay due to the high level;
[0027] In summary, by adopting the above technical solution, the requirements of the relay receiving low-level signal triggering and receiving high-level signal triggering are met at the same time, thereby reducing the use of mechanical components and reducing costs. In addition, due to the smaller number of devices, it also has the advantages of easy implementation and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] Figure 1 This is a module diagram of a high- and low-level vehicle locking compatible circuit provided in an embodiment of the present application;
[0029] Figure 2 This is a circuit diagram of a high- and low-level vehicle locking compatible circuit provided in an embodiment of the present application;
[0030] Figure 3 This is a circuit schematic diagram of the MOS tube used in the high- and low-level vehicle locking compatible circuit provided in an embodiment of the present application;
[0031] Figure 4 This is a circuit diagram of a typical low-level car locking circuit provided by this application;
[0032] Figure 5 This is a circuit diagram of a typical high-level car locking circuit provided in this application. DETAILED DESCRIPTION
[0033] The present application is further described below with reference to the accompanying drawings and examples.
[0034] The following will clearly and completely describe the concept, specific structure and technical effects of this application in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of this application. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments of this application, other embodiments obtained by those skilled in the art without creative work are within the scope of protection of this application. In addition, all the connection / connection relationships involved in the patent do not refer to the direct connection of components, but refer to the formation of a better connection structure by adding or reducing connection accessories according to the specific implementation situation. The various technical features created in this application can be combined interactively without conflicting with each other.
[0035] Reference Figure 1 , Figure 1 This is a module diagram of a high- and low-level vehicle locking compatible circuit provided by an embodiment of the present application. The circuit includes a level switching module and a signal processing module, and their connection relationship is as follows:
[0036] The input end of the level switching module is connected to an external first signal source, the output end is connected to the first input end of the signal processing module, the output end of the signal processing module is connected to a relay; the second input end of the signal processing module is connected to an external second signal source.
[0037] Specifically, one of the first signal source and the second signal source selectively sends a high-level signal, and is used to control the signal processing module to send a low-level signal to the relay through the level switching module if the first signal source outputs a high level to the level switching module; and is also used to send a high-level signal to the relay through the signal processing module if the second signal source outputs a high level to the signal processing module.
[0038] The first signal source and the second signal source can be controlled and sent by the MCU. The level signal corresponding to the first signal source is HOUT_EN, and the level signal corresponding to the second signal source is LOUT_EN.
[0039] More specifically, the level switching module includes switching transistors, including but not limited to triode Q2 and MOS transistor U10. The signal processing module includes at least one PMOS transistor U10 and an NMOS transistor U10. In this application, these are implemented using integrated N-channel and P-channel enhancement-mode field-effect transistors. It is worth noting that in this embodiment of the application, the first signal source and the second signal source cannot simultaneously transmit high levels, otherwise a short circuit will occur in the signal processing module, causing damage to the device.
[0040] Further, refer to Figure 2 , Figure 2This is a circuit schematic diagram of the high and low level lock car compatible circuit provided by the embodiment of the present application, which specifically shows the specific circuit implementation of the above module. Figure 2 A detailed description of each module:
[0041] Regarding the level switching module: The level switching module includes a first resistor R10 and a transistor Q2. The connection method in this circuit is:
[0042] One end of the first resistor R10 is connected to the first signal source, and the other end is connected to the base of the transistor Q2;
[0043] The collector of the transistor Q2 is connected to the first input terminal of the signal processing module, and the emitter is grounded.
[0044] Specifically, by adopting the above-mentioned connection method, when the first signal source sends a high-level signal, the base level of the transistor Q2 is pulled up through the first resistor R10. Since the transistor Q2 adopts an NPN transistor Q2, the base is pulled up to trigger the conduction condition, so that the external DC signal source 12_VIN in the signal processing module is grounded and turned on. The first input end of the signal processing module is pulled up due to the conduction of this loop.
[0045] Similarly, when the first signal source sends a low-level signal, the transistor Q2 is not turned on, so that the level of the first input terminal of the signal processing module is pulled low, which will not be elaborated here.
[0046] More specifically, in the embodiment of the present application, the model of transistor Q2 is PDTC124ET. It should be understood that transistor Q2 is only one embodiment proposed in the present application, and any relay switch tube with a control loop conduction is within the scope of protection of the present application.
[0047] Regarding the signal processing module: the signal processing module includes a MOS transistor U10, a second resistor R32, and a third resistor R26; the MOS transistor U10 is an N / P channel MOS transistor U10. In the embodiment of the present application, the model of the MOS transistor U10 is AP2716QD, and its internal structure is as follows: Figure 3 As shown, Figure 3 yes Figure 3 This is a circuit schematic diagram of the MOS tube U10 used in the high- and low-level vehicle locking compatible circuit provided in an embodiment of the present application.
[0048] Combine Figure 3 It can be seen that the MOS tube U10 integrates an NMOS tube U10 (left) and a PMOS tube U10 (right).
[0049] Furthermore, in the circuit design provided in the embodiment of the present application, the connection mode is as follows: the first gate of the MOS transistor U10 is connected to one end of the second resistor R32 and one end of the third resistor R26, and the other end of the second resistor R32 is connected to the collector of the transistor Q2;
[0050] The other end of the third resistor R26 is connected to the first source of the MOS transistor U10 and the external DC signal source 12_VIN, and the first drain of the MOS transistor U10 is connected to the relay.
[0051] Specifically, in conjunction with the above description of the level switching module, when transistor Q2 is turned on, the high-level signal emitted by the DC signal source 12_VIN is transmitted to ground via the third resistor R26, the second resistor R32, and transistor Q2, thereby raising the potential between the third resistor R26 and the second resistor R32. This potential is connected to the first gate of the MOS transistor U10. As a result, the first gate is pulled high, causing the PMOS portion within the MOS transistor U10 to be disconnected. The other gate (hereinafter referred to as the second gate) is controlled by the second signal source. When the first signal source sends a high-level signal, the second signal source is not allowed to send a high-level signal at the same time. Therefore, the signal ultimately output at the output terminals (first drain and second drain) of the MOS transistor U10 is a low-level signal. At this time, the relay triggers the vehicle lock due to the low level.
[0052] Similarly, when the relay needs a high level to trigger the vehicle locking, when the first signal source outputs a low level signal and the second signal source outputs a high level signal, the transistor Q2 is not turned on, and the first input end of the signal processing module is at a high level, causing the corresponding PMOS part to turn on. At this time, the relay triggers the vehicle locking due to the high level output.
[0053] Furthermore, the signal processing module further includes a fourth resistor R33 and a fifth resistor R27;
[0054] The second gate of the MOS transistor U10 is connected to one end of the fourth resistor R33 and one end of the fifth resistor R27, and the other end of the fourth resistor R33 is connected to the second signal source;
[0055] The other end of the fifth resistor R27 is connected to the second source of the MOS transistor U10 and the ground, and the second drain of the MOS transistor U10 is connected to the relay.
[0056] Specifically, when the second signal source outputs a high-level signal, the high-level signal passes through the fourth resistor R33 and the fifth resistor R27 to ground, forming a signal loop. At this point, the second gate is pulled high, turning on the NMOS portion of MOS transistor U10. The high-level signal is output to the relay via the second drain of MOS transistor U10, thus achieving high-level vehicle locking. Similarly, when the second signal source outputs a low-level signal, the NMOS portion of the signal processing module is turned off, and the second drain outputs a low-level signal to the relay, achieving low-level vehicle locking.
[0057] Furthermore, the signal processing module further includes a voltage regulator tube D11 , which is connected in the following manner: the cathode of the voltage regulator tube D11 is connected to the connection point between the MOS tube U10 and the relay, and the anode of the voltage regulator tube D11 is grounded.
[0058] Specifically, a voltage regulator D11 is added at the connection between the MOS tube U10 and the relay to stabilize the voltage output, thereby improving the reliability of the circuit. In the embodiment of the present application, the model of the voltage regulator D11 is SMAJ36CA.
[0059] Typical, reference Figure 4 , Figure 4 This is the circuit schematic diagram of a typical low-level vehicle locking circuit provided by this application. It can be seen that the MCU controls the level of LOUT1_EN, thereby controlling LOUT1 to output a low-level signal. When LOUT1_EN outputs a high level, LOUT1 outputs a low level; when LOUT1_EN outputs a low level or is left floating, LOUT1 outputs a non-low level, thus only achieving the low-level vehicle locking requirement.
[0060] Typical, reference Figure 5 , Figure 5 This is the schematic diagram of a typical high-level vehicle locking circuit provided by this application. It can be seen that the MCU controls the level of HOUT1_EN, thereby controlling HOUT1 to output a low-level signal. When HOUT1_EN outputs a high level, HOUT1 outputs a high level; when HOUT1_EN outputs a low level or is left floating, HOUT1 outputs a low level.
[0061] Combine Figure 4 and Figure 5 It can be seen from the typical cases provided that this application simultaneously meets the use requirements of the relay receiving low-level signal triggering and receiving high-level signal triggering, reduces the use of mechanical parts, reduces costs, and due to the smaller number of devices, it also has the advantages of easy implementation and maintenance.
[0062] In a second aspect, the present application provides an electronic device equipped with the above-mentioned high and low level vehicle locking compatible circuit.
[0063] The above is a specific description of the preferred implementation of the present application, but the invention of the present application is not limited to the described embodiments. Technical personnel familiar with the art can also make various equivalent modifications or substitutions without violating the spirit of the present application. These equivalent modifications or substitutions are all included in the scope defined by the claims of the present application.
Claims
1. A high and low level car lock compatible circuit, characterized in that: include: Level switching module and signal processing module; The input end of the level switching module is connected to an external first signal source, the output end is connected to the first input end of the signal processing module, the output end of the signal processing module is connected to a relay; the second input end of the signal processing module is connected to an external second signal source; The first signal source and the second signal source selectively send a high-level signal, and are used to control the signal processing module to send a low-level signal to the relay through the level switching module if the first signal source outputs a high level to the level switching module; and are also used to send a high-level signal to the relay through the signal processing module if the second signal source outputs a high level to the signal processing module.
2. The high and low level vehicle locking compatible circuit according to claim 1, characterized in that: The level switching module includes a first resistor and a transistor; One end of the first resistor is connected to the first signal source, and the other end is connected to the base of the transistor; The collector of the transistor is connected to the first input terminal of the signal processing module, and the emitter is grounded.
3. The high and low level vehicle locking compatible circuit according to claim 2, characterized in that: The signal processing module includes a MOS tube, a second resistor, and a third resistor; The MOS tube is an N\P channel MOS tube; The first gate of the MOS transistor is connected to one end of the second resistor and one end of the third resistor, and the other end of the second resistor is connected to the collector of the transistor; The other end of the third resistor is connected to the first source of the MOS transistor and an external DC signal source, and the first drain of the MOS transistor is connected to the relay.
4. The high and low level vehicle locking compatible circuit according to claim 3, characterized in that: The signal processing module further includes a fourth resistor and a fifth resistor; The second gate of the MOS transistor is connected to one end of the fourth resistor and one end of the fifth resistor, and the other end of the fourth resistor is connected to the second signal source; The other end of the fifth resistor is connected to the second source of the MOS transistor and the ground, and the second drain of the MOS transistor is connected to the relay.
5. The high and low level vehicle locking compatible circuit according to claim 3, characterized in that: The signal processing module also includes a voltage regulator tube; The cathode of the voltage regulator tube is connected to the connection point of the MOS tube and the relay, and the anode of the voltage regulator tube is grounded.
6. The high and low level vehicle locking compatible circuit according to claim 5, characterized in that: The model of the voltage regulator tube is SMAJ36CA.
7. The high and low level vehicle locking compatible circuit according to claim 3, characterized in that: The model of the MOS tube is AP2716QD.
8. The high and low level vehicle locking compatible circuit according to claim 2, characterized in that: The model of the transistor is PDTC124ET.
9. An electronic device, characterized in that: The vehicle is equipped with a high- and low-level vehicle locking compatible circuit as described in any one of claims 1 to 8.