CN217716276U

CN217716276U - Position signal redundancy detection circuit and vehicle with same

Info

Publication number: CN217716276U
Application number: CN202221668527.8U
Authority: CN
Inventors: 黄健; 付仕俊; 李幸
Original assignee: Shanghai Yidong Power Technology Co ltd
Current assignee: Shanghai Yidong Power Technology Co ltd
Priority date: 2022-06-29
Filing date: 2022-06-29
Publication date: 2022-11-01
Anticipated expiration: 2032-06-29

Abstract

The utility model relates to a position signal redundancy detection circuit and have its vehicle, including position level signal end, singlechip signal input end, resistance R1, R2, R3, electric capacity C1, MOS pipe Q1, supply voltage and two-way 4bit binary system counter; the position level signal end is connected with a resistor R2, the other end is electrically connected with an MOS tube Q1, a circuit between the resistor R2 and the MOS tube Q1 is respectively connected with a resistor R3 and a capacitor C1, and the resistor R3, the capacitor C1 and the MOS tube Q1 are all grounded through wires; the other end of the MOS transistor Q1 is electrically connected with a resistor R1, and the other end of the resistor R1 is connected with a power supply voltage; a single chip microcomputer signal input end is connected to a circuit between the MOS tube Q1 and the resistor R1; and the double-path 4-bit binary counter U1 is connected to a circuit between the MOS tube Q1 and the signal input end of the single chip microcomputer.

Description

Position signal redundancy detection circuit and vehicle with same

Technical Field

The utility model relates to a detection circuitry technical field, more specifically say, relate to a redundant detection circuitry of position signal and have its vehicle.

Background

Along with the high-speed development of the new energy automobile industry, the hybrid automobile occupies a large market by virtue of the advantages of low oil consumption, high cruising mileage and the like, each large host factory also pays more attention to the driving experience of users, and the automobile body shaking caused by the engine shaking during the starting and stopping of the automobile can cause adverse effects on the driving experience. Therefore, each large main engine plant also requires that the motor drives the transmission shaft to stop the engine at a proper angle in the start-stop stage of the hybrid electric vehicle so as to reduce the jitter.

In order for the motor to properly control the engine to stop at the proper angle, it is necessary to detect the positions of the crankshaft and camshaft of the engine. Namely: when the vehicle stops, the motor controller detects position signals of a crankshaft and a camshaft of the engine, and controls the motor to send out appropriate torque to drive the transmission shaft to stop the engine at an appropriate angle.

At present, a crankshaft position signal detection scheme mainly collects a crankshaft position signal sent by a crankshaft position sensor, the signal is sent to a single chip microcomputer through a signal sampling processing circuit, and the position information is calculated by the single chip microcomputer.

The foregoing description is provided for general background information and is not admitted to be prior art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a redundant detection circuitry of position signal and have its vehicle, this redundant detection circuitry of position signal is when the position signal redundancy detects, can the singlechip direct calculation also can calculate output to the singlechip through 4bit binary system counters of double-circuit, can practice thrift singlechip calculation resource.

The utility model provides a position signal redundancy detection circuit, which comprises a position level signal end, a single chip microcomputer signal input end, a resistor R1, a resistor R2, a resistor R3, a capacitor C1, an MOS tube Q1, a power supply voltage VCC1 and a double-circuit 4bit binary counter U1; the resistor R2 is connected to the position level signal end, the MOS tube Q1 is electrically connected to the other end of the resistor R2, the resistor R3 and the capacitor C1 are respectively connected to a circuit between the resistor R2 and the MOS tube Q1, and the resistor R3, the capacitor C1 and the MOS tube Q1 are all grounded through wires; the other end of the MOS transistor Q1 is electrically connected with the resistor R1, and the other end of the resistor R1 is connected with the power supply voltage VCC 1; the circuit between the MOS tube Q1 and the resistor R1 is connected with the signal input end of the single chip microcomputer; the double-path 4-bit binary counter U1 is connected to a circuit between the MOS tube Q1 and the signal input end of the single chip microcomputer, the double-path 4-bit binary counter U1 is connected with a power supply voltage VCC2, and the power supply voltage VCC2 is used for supplying power to the double-path 4-bit binary counter U1; the two-way 4-bit binary counter U1 is grounded through a lead.

Furthermore, the resistor R2 is electrically connected to a G-pole of the MOS transistor Q1, an S-pole of the MOS transistor Q1 is grounded through a wire, and a D-pole of the MOS transistor Q1 is electrically connected to the resistor R1.

Furthermore, a 1CK pin on the two-way 4-bit binary counter U1 is connected to a circuit between the MOS tube Q1 and the signal input end of the single chip microcomputer.

The utility model also provides a vehicle, including the redundant detection circuitry of foretell position signal.

Further, the vehicle comprises a crankshaft position sensor and a single chip microcomputer; the crankshaft position sensor is connected with the position level signal end, and the single chip microcomputer is connected with the signal input end of the single chip microcomputer.

The utility model provides a position signal redundancy detection circuit, when the position signal redundancy detects, can directly calculate by the singlechip and also can calculate and output to the singlechip through a double-circuit 4bit binary counter; the position calculation circuit is simple, and the function of position calculation can be realized only by using a double-path 4-bit binary counter; when the position is calculated by the double-path 4-bit binary counter, the calculation resources of the singlechip can be saved.

Drawings

Fig. 1 is a schematic diagram of a position signal redundancy detection circuit according to an embodiment of the present invention.

Fig. 2 is another schematic diagram of the redundant circuit for detecting position signals in fig. 1.

Fig. 3 is a schematic diagram of square wave pulses of a missing tooth signal of a position signal detected by the single chip microcomputer.

FIG. 4 is a timing diagram of a two-way 4-bit binary counter.

The reference numerals and components referred to in the drawings are as follows:

100. position level signal terminal

200. Signal input end of single chip computer

300. Crankshaft position sensor

400. Single chip microcomputer

Detailed Description

The following detailed description of the embodiments of the present invention is made with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

The terms "first," "second," "third," "fourth," and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

Example 1

Fig. 1 is a schematic diagram of a position signal redundancy detection circuit according to an embodiment of the present invention. Referring to fig. 1, the position signal redundancy detection circuit provided in the embodiment of the present invention includes a position level signal terminal 100, a single chip signal input terminal 200, a resistor R1, a resistor R2, a resistor R3, a capacitor C1, a MOS transistor Q1, a supply voltage VCC1, and a two-way 4-bit binary counter U1; the position level signal end 100 is connected with a resistor R2, the other end of the resistor R2 is electrically connected with an MOS (metal oxide semiconductor) tube Q1, a circuit between the resistor R2 and the MOS tube Q1 is respectively connected with a resistor R3 and a capacitor C1, and the resistor R3, the capacitor C1 and the MOS tube Q1 are all grounded through wires; the other end of the MOS transistor Q1 is electrically connected with a resistor R1, and the other end of the resistor R1 is connected with a power supply voltage VCC 1; a single chip microcomputer signal input end 200 is connected to a circuit between the MOS tube Q1 and the resistor R1; the double-path 4-bit binary counter U1 is connected to a circuit between the MOS tube Q1 and the single chip microcomputer signal input end 200, the double-path 4-bit binary counter U1 is connected with a power supply voltage VCC2, and the power supply voltage VCC2 is used for supplying power to the double-path 4-bit binary counter U1; the two-way 4bit binary counter U1 is grounded through a wire.

Specifically, the resistor R2 is electrically connected to the G-pole of the MOS transistor Q1, the S-pole of the MOS transistor Q1 is grounded via a wire, and the D-pole of the MOS transistor Q1 is electrically connected to the resistor R1. And a 1CK pin on the double-path 4-bit binary counter U1 is connected to a circuit between the MOS tube Q1 and the signal input end 200 of the single chip microcomputer.

Fig. 3 is a schematic diagram of a square wave pulse of a missing tooth signal of a position signal detected by a single chip microcomputer, and fig. 4 is a timing diagram of a two-way 4-bit binary counter. With further reference to fig. 1, 3 and 4, the position signal redundancy detecting circuit provided by the present invention receives the position level signal outputted by the crank position sensor 300 at the position level signal terminal 100, and the output signal of the crank position sensor 300 is as shown in fig. 3.

When crankshaft position sensor 300 is not connected, resistor R3 pulls down the G pole of MOS pipe Q1 to 0V, prevents MOS pipe Q1 misconnection. When the crankshaft position sensor 300 is connected, the crankshaft position sensor 300 outputs a square wave signal, and an interference signal in the signal filtered by a filter circuit composed of a resistor R2 and a capacitor C1 is sent to a G pole of an MOS transistor Q1. The filtered square wave signal is subjected to level conversion and turnover through an MOS (metal oxide semiconductor) transistor Q1 and is output to a single chip microcomputer signal input end 200, and the signal is directly input to a single chip microcomputer 400 through the single chip microcomputer signal input end 200 and is simultaneously input to a 1CK pin of a double-path 4-bit binary counter U1.

The single chip microcomputer 400 can automatically calculate the crankshaft position through the input crankshaft position signal, and can also calculate the position through a two-way 4-bit binary counter U1, and a two-way 4-bit binary counter timing chart (as shown in FIG. 4). When the position is calculated by using the two-way 4-bit binary counter U1, the single chip microcomputer 400 detects a missing tooth signal of a position signal (in fig. 3, the square wave pulse width is obviously widened), a RESET Crank RESET signal is sent to RESET the two-way 4-bit binary counter U1 to start counting, a calculated value is output to the single chip microcomputer 400,1Q3 through 1Q0, 1Q1, 1Q2 and 1Q3 and is simultaneously input to a 2CK pin, and when the counting exceeds 16, the 2Q0, 2Q1, 2Q2 and 2Q3 start to be output to the single chip microcomputer 400 to represent a carry value.

The utility model provides a position signal redundancy detection circuit, when the position signal redundancy detects, can directly calculate by singlechip 400 also can calculate through double-circuit 4bit binary system counter U1 and export to singlechip 400; the position calculation circuit is simple, and the function of position calculation can be realized only by using a double-path 4-bit binary counter U1; when the position is calculated by the double-path 4-bit binary counter U1, the calculation resource of the single chip microcomputer 400 can be saved.

Fig. 2 is another schematic diagram of the position signal redundancy detection circuit of fig. 1. Referring to fig. 2, the present invention further provides a vehicle including the position signal redundancy detecting circuit.

Further, the vehicle includes a crank position sensor 300 and a single chip 400; crankshaft position sensor 300 is connected with position level signal end 100, and singlechip 400 is connected with singlechip signal input end 200. For other technical features of the vehicle, please refer to the prior art, which is not described herein.

Based on the above description, the utility model discloses the advantage lies in:

1. the utility model provides a redundant detection circuitry of position signal, position signal redundancy detects time measuring, can the singlechip 400 direct calculation also can calculate output to singlechip 400 through double-circuit 4bit binary system counter U1.

2. The position signal redundancy detection circuit provided by the utility model has simple position calculation circuit, and the function of position calculation can be realized only by using a double-path 4-bit binary counter U1;

3. the utility model provides a redundant detection circuitry of position signal when calculating the position through 4bit binary system counters U1 of double-circuit, can practice thrift singlechip 400 computational resource.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A position signal redundancy detection circuit is characterized by comprising a position level signal end (100), a single chip microcomputer signal input end (200), a resistor R1, a resistor R2, a resistor R3, a capacitor C1, an MOS (metal oxide semiconductor) transistor Q1, a power supply voltage VCC1 and a double-path 4-bit binary counter U1;

the resistor R2 is connected to the position level signal end (100), the MOS tube Q1 is electrically connected to the other end of the resistor R2, the resistor R3 and the capacitor C1 are respectively connected to a circuit between the resistor R2 and the MOS tube Q1, and the resistor R3, the capacitor C1 and the MOS tube Q1 are all grounded through wires;

the other end of the MOS transistor Q1 is electrically connected with the resistor R1, and the other end of the resistor R1 is connected with the power supply voltage VCC 1;

the circuit between the MOS tube Q1 and the resistor R1 is connected with the signal input end (200) of the single chip microcomputer;

the double-circuit 4-bit binary counter U1 is connected to a circuit between the MOS tube Q1 and the single chip microcomputer signal input end (200), the double-circuit 4-bit binary counter U1 is connected with a power supply voltage VCC2, and the power supply voltage VCC2 is used for supplying power to the double-circuit 4-bit binary counter U1; the two-way 4-bit binary counter U1 is grounded through a lead.

2. The redundant detection circuit of position signal according to claim 1, characterized in that the resistor R2 is electrically connected to the G-pole of the MOS transistor Q1, the S-pole of the MOS transistor Q1 is grounded through a wire, and the D-pole of the MOS transistor Q1 is electrically connected to the resistor R1.

3. The position signal redundancy detection circuit according to claim 1, wherein a 1CK pin of the two-way 4-bit binary counter U1 is connected to a circuit between the MOS transistor Q1 and the single chip microcomputer signal input terminal (200).

4. A vehicle characterized by comprising the position signal redundancy detection circuit according to any one of claims 1 to 3.

5. The vehicle of claim 4, characterized in that the vehicle comprises a crankshaft position sensor (300) and a single-chip microcomputer (400); the crankshaft position sensor (300) is connected with the position level signal end (100), and the single chip microcomputer (400) is connected with the single chip microcomputer signal input end (200).