Multipath FV converter

Abstract

The utility model relates to a multipath FV converter comprising a circuit assembly. The circuit assembly comprises resistors R1-R5, a capacitor C1, an operational amplifier U4, triodes Q1 and Q2, an XNOR gate circuit U1B, XNOR gate circuits U2A and U2B, a D trigger U3A and an operational amplifier U4; the XNOR gate circuits U2A and U2B are connected to output signals of an external rotor position sensor, the input end of the XNOR gate circuit U1B is connected to the output end of the XNOR gate circuit U2B, and the other input end of the XNOR gate circuit U1B is connected to the data input end 5 of the D trigger U3A and is connected with the complementary output end 2 of the D trigger U3A; the output end of the XNOR gate circuit U1B is connected with the clock input end 3 of the D trigger U3A and connected with the base electrode of the triode Q1 through the resistor R1. The device is reasonable in design, compact in structure and convenient to use.

Description

TECHNICAL FIELD

[0001] The utility model relates to a multiway FV converter, specifically a multiway frequency-voltage conversion circuit for motor speed signal acquisition. BACKGROUND

[0002] The FV converter produced by the domestic and foreign manufacturers adopts the plastic package structure, and the volume is big, the circuit is aged, and the application environment of high and low voltage and wide temperature range cannot be satisfied.

[0003] In order to solve the technical problems such as the plastic package structure, the volume is big, and the application environment of high and low voltage and wide temperature range cannot be satisfied, the utility model designs the converter integrated with the multiway frequency-voltage conversion circuit, adopts the thick film hybrid integrated circuit technology, the metal full sealing package structure, the volume is reduced by more than 60% compared with the traditional structure, and reliable work can be realized in the high and low voltage and wide temperature range. UTILITY MODEL CONTENTS

[0004] The utility model solves the technical problems such as the traditional plastic package structure, the volume is big, and the application environment of high and low voltage and wide temperature range cannot be satisfied.

[0005] In order to solve the above problems, the technical scheme adopted by the utility model is:

[0006] A multiway FV converter, including circuit assembly, the circuit assembly includes resistance R1-R5, capacitor C1, operational amplifier U4, triode Q1 and Q2, exclusive or gate circuit U1B, exclusive or gate circuit U2A and U2B, D flip-flop U3A, operational amplifier U4;

[0007] The exclusive or gate circuit U2A and U2B access the external rotor position sensor output signal, the input end of the exclusive or gate circuit U1B accesses the output end of the exclusive or gate circuit U2B, and the other input end of the exclusive or gate circuit U1B accesses the data input end 5 of the D flip-flop U3A and is connected with the complementary output end 2 of the D flip-flop U3A;

[0008] The output end of the exclusive or gate circuit U1B is respectively connected with the clock input end 3 of the D flip-flop U3A and the base of the triode Q1 through resistance R1;

[0009] The emitter of the triode Q1 is connected with the ground;

[0010] The collector of the triode Q1 is connected with the emitter of the triode Q2 in one way and is connected with the negative input end of the operational amplifier U4 in another way;

[0011] VCC is connected with the emitter of the triode Q2 through the pull-down resistance R2, and the emitter of the triode Q2 is connected with the ground through the capacitor C2;

[0012] The collector of transistor Q2 is grounded.

[0013] VCC is connected to the base of transistor Q2 through pull-down resistor R3. The base of transistor Q2 is grounded through resistor R4 and is electrically connected to the positive input terminal of operational amplifier U4.

[0014] The output of operational amplifier U4 is V-out1, which is grounded through resistor R5.

[0015] As a further improvement to the above technical solution:

[0016] The circuit assembly is equipped with a support leg base; a metal housing that is sealed on the support leg base and fastened to the circuit assembly is provided.

[0017] The output signals of the external rotor position sensor include signals f-in1, f-in2, and f-in3.

[0018] The XOR gate circuit U1B and the D flip-flop U3A form a frequency multiplication circuit.

[0019] This invention employs thick-film hybrid integrated circuit technology and a fully sealed metal encapsulation structure, reducing the volume by more than 60% compared to traditional structures. It also enables reliable operation across a wide temperature range and under high and low pressure conditions. This invention is rationally designed, low in cost, robust and durable, safe and reliable, simple to operate, time-saving, labor-saving, cost-effective, compact in structure, and easy to use. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0021] Figure 2 This is a schematic diagram of the structure of this utility model.

[0022] The components include: 1. Metal housing; 2. Circuit components; 3. Leg base. Detailed Implementation

[0023] like Figure 1 , Figure 2 As shown, a thick-film integrated multi-channel FV converter includes a leg base; a circuit assembly 2 is disposed on the leg base; and a metal housing that is sealed and covered on the circuit assembly 2 is disposed on the leg base.

[0024] like Figure 2 The circuit components include resistors R1-R5, capacitor C1, operational amplifier U4, transistors Q1 and Q2, XOR gate U1B, XOR gate U2A and U2B, D flip-flop U3A, and operational amplifier U4.

[0025] XOR gate circuit U2A and U2B access the external rotor position sensor output signal, the input end of XOR gate circuit U1B accesses the output end of XOR gate circuit U2B, the other input end of XOR gate circuit U1B accesses the data input end 5 of D flip-flop U3A and is connected with the complementary output end 2 of D flip-flop U3A;

[0026] The output end of XOR gate circuit U1B is connected with the clock input end 3 of D flip-flop U3A and the base of triode Q1 through resistance R1 respectively;

[0027] The emitter of triode Q1 is connected with ground;

[0028] The collector of triode Q1 is connected with the emitter of triode Q2 in one way and the negative input end of operational amplifier U4 in the other way;

[0029] VCC is connected with the emitter of triode Q2 through pull-down resistance R2, and the emitter of triode Q2 is connected with ground through capacitor C2;

[0030] The collector of triode Q2 is connected with ground,

[0031] VCC is connected with the base of triode Q2 through pull-down resistance R3, and the base of triode Q2 is connected with ground through resistance R4 and is electrically connected with the positive input end of operational amplifier U4;

[0032] The output end of operational amplifier U4 outputs V-out1 and is connected with ground through resistance R5.

[0033] The frequency signal of the Hall sensor is collected, and the voltage signal whose amplitude is proportional to the input frequency is obtained through signal shaping, frequency division, integration, amplification and filtering. Specifically, the output signal of the external rotor position sensor, i.e. f-in1, f-in2 and f-in3, is input into the internal part of the converter through XOR gate circuits U2A and U2B, and each change of f-in1, f-in2 and f-in3 will form a rising edge or a falling edge at the output end of U2B. XOR gate circuit U1B and D flip-flop U3A form a double-frequency circuit; the signal output by U2B is processed to form a narrow pulse signal.

[0034] The narrow pulse signal output by XOR gate circuit U1B controls the discharge of capacitor C1 through resistance R1 and triode Q1, and further controls the period of output V-out1.

[0035] Triode Q2, resistance R3 and resistance R4 form a threshold circuit, and together with operational amplifier U4 control the pulse width of the output signal.

[0036] In summary, the signal output at the output end of operational amplifier U4 has a certain pulse width, and the frequency (represented by the amplitude) changes with the input f-in1, f-in2 and f-in3.

[0037] The FV converter adopts three groups of circuits as shown in the above Figure 2 Each group of circuits inputs three frequency signals (f-in1, f-in2, f-in3) and forms a voltage signal V-out1 proportional to the input frequency after conversion.

[0038] The circuit can be used for motor speed loop control, and the three frequency signals are generally motor position signals (such as Hall sensor output), and the output voltage signal is used for feedback motor speed.

[0039] The product adopts thick film hybrid circuit technology and metal full-sealed packaging structure, greatly reduces the volume, and can work reliably in high and low pressure and wide temperature range.

[0040] The utility model fully describes is in order to more clearly disclose, and for prior art will not enumerate one by one.

[0041] Finally, it should be pointed out that: the above examples are only used to illustrate the technical solutions of the utility model, and are not limited thereto; although the utility model has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement to part of the technical features; as the person skilled in the art combines the plurality of technical solutions of the utility model, it is obvious; these modifications or replacements do not make the essence of the corresponding technical solution deviate from the spirit and scope of the technical solutions of the embodiments of the utility model. The technical contents not described in the utility model are all known technologies.

Claims

1. A multipath FV converter, characterized by: The circuit component (2) comprises resistors R1-R5, capacitor C1, operational amplifier U4, transistors Q1 and Q2, exclusive-OR gate circuit U1B, exclusive-OR gate circuits U2A and U2B, D flip-flop U3A, and operational amplifier U4. The exclusive-OR gate circuits U2A and U2B are connected to the output signals of the external rotor position sensor, the input end of the exclusive-OR gate circuit U1B is connected to the output end of the exclusive-OR gate circuit U2B, and the other input end of the exclusive-OR gate circuit U1B is connected to the data input end 5 of the D flip-flop U3A and the complementary output end 2 of the D flip-flop U3A. The output end of the exclusive-OR gate circuit U1B is connected to the clock input end 3 of the D flip-flop U3A and the base of the transistor Q1 through resistor R1. The emitter of the transistor Q1 is connected to the ground. One of the collectors of the transistor Q1 is connected to the emitter of the transistor Q2, and the other is connected to the negative input end of the operational amplifier U4. VCC is connected to the emitter of the transistor Q2 through resistor R2, and the emitter of the transistor Q2 is connected to the ground through capacitor C2. The collector of the transistor Q2 is connected to the ground. VCC is connected to the base of the transistor Q2 through resistor R3, and the base of the transistor Q2 is connected to the ground through resistor R4 and the positive input end of the operational amplifier U4. The output end of the operational amplifier U4 outputs V-out1 and is connected to the ground through resistor R5.

2. The multipath FV converter of claim 1, wherein: The circuit component (2) is matched with the leg seat body (3), and the metal shell is sealingly arranged on the leg seat body (3) and buckled on the circuit component (2).

3. The multipath FV converter of claim 1, wherein: The output signals of the external rotor position sensor include signals f-in1, f-in2, and f-in3.

4. The multipath FV converter of claim 1, wherein: The exclusive-OR gate circuit U1B and the D flip-flop U3A form a 2-frequency circuit.

Images