Gear identification line misconnection detection device

Abstract

The utility model discloses a device for detecting misconnection of a gear identification line, which comprises a four-wire three-speed motor, a gear identification circuit, a single chip microcomputer, a fault detection module, a signal processing module and a power supply module, a fault detection module is arranged between the zero line of the four-wire three-speed motor and the input end of the gear identification circuit. The output end of the fault detection module is connected with the input end of the single-chip microcomputer. The fault detection module comprises a first resistor, a second resistor, a signal identification module and an amplification module, one side of the first resistor is connected with a zero line of the four-wire three-speed motor, the other side of the first resistor is connected with the second resistor and the input end of the signal identification module, and the second resistor is connected with the input end of the gear identification circuit; the output end of the signal identification module is connected with the input end of the amplification module, and the output end of the amplification module is connected with the input end of the single-chip microcomputer. According to the utility model, whether the four-wire three-speed motor and the gear identification circuit are correctly connected can be accurately identified.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor gear position detection technical field especially relates to gear recognition line wrong connection detection device. BACKGROUND

[0002] At present, four-line three-speed motor needs to connect the output end of the gear circuit of four-line three-speed motor and the input end of gear recognition circuit to realize the detection of its gear, so as to facilitate the judgment of whether four-line three-speed motor is used, facilitate the manager to check the use of four-line three-speed motor by user, and charge according to the use condition and so on. But sometimes user will connect the zero line of four-line three-speed motor and gear recognition circuit together, and this wiring mode will appear that four-line three-speed motor works normally, but the voltage of input end of gear recognition circuit is 0V, gear recognition circuit cannot detect the correct gear of four-line three-speed motor (gear recognition circuit shows that four-line three-speed motor does not work), and further makes the manager unable to know the working condition of four-line three-speed motor through gear recognition circuit (there is the condition that user steals four-line three-speed motor), and cannot charge according to the working condition of four-line three-speed motor. The prior art cannot accurately judge whether four-line three-speed motor and gear recognition circuit are connected correctly. SUMMARY

[0003] In order to solve the problem that when user incorrectly connects the zero line of four-line three-speed motor and gear recognition circuit together, cannot identify wiring error, the utility model provides gear recognition line wrong connection detection device, sets up fault detection module between the zero line of four-line three-speed motor and the input end of gear recognition circuit to identify whether error wiring is carried out, and further timely rectifies error wiring, guarantees the accuracy of four-line three-speed motor gear detection.

[0004] In order to realize the above-mentioned purpose, the technical scheme of the utility model is:

[0005] Gear recognition line wrong connection detection device, including: four-line three-speed motor, gear recognition circuit and singlechip, the output end of the gear circuit of four-line three-speed motor is connected with the input end of gear recognition circuit, still including: fault detection module, the input end of gear recognition circuit is provided with fault detection module between the zero line of four-line three-speed motor, the output end of fault detection module is connected with the input end of singlechip, and it is convenient to accurately identify wiring error;

[0006] The fault detection module includes first resistance, second resistance, signal identification module and amplification module, one side of first resistance is connected with the zero line of four-line three-speed motor, and the other side is connected with second resistance and the input end of signal identification module respectively, second resistance is connected with the input end of gear recognition circuit, the output end of signal identification module is connected with the input end of amplification module, and the output end of amplification module is connected with the input end of singlechip.

[0007] Further, the signal identification module comprises a first amplifier and a second amplifier, the output end of the signal identification module is connected with the input end of the first amplifier, the output end of the first amplifier is connected with the input end of the second amplifier, and the output end of the second amplifier is connected with the input end of the amplification module.

[0008] The first amplifier and the second amplifier are used for converting the alternating current signal into a single polarity voltage.

[0009] Further, the signal identification module further comprises a first feedback resistor and a second feedback resistor, the output end of the second amplifier is connected with the inverting input end of the second amplifier and the first amplifier respectively, the second feedback resistor is arranged in front of the inverting input end of the second amplifier, and the first feedback resistor is arranged in front of the inverting input end of the first amplifier.

[0010] The first feedback resistor and the second feedback resistor are used for adjusting and controlling the input alternating current signal within ±10V.

[0011] Further, the amplification module comprises an instrument amplifier, the output end of the signal identification module is connected with the input end of the instrument amplifier, and the output end of the instrument amplifier is connected with the input end of the single-chip microcomputer.

[0012] The instrument amplifier is used for converting the signal output by the signal identification module into a signal that can be collected by the single-chip microcomputer.

[0013] Further, the inverting input end of the instrument amplifier is further provided with a resistor, both ends of the resistor are electrically connected with the inverting input end of the instrument amplifier, and the resistor is used for controlling a signal amplification multiple.

[0014] The utility model discloses the beneficial effect:

[0015] (1) the utility model discloses a fault detection module is arranged between the zero line of four-line three-speed motor and the input end of gear recognition circuit, can discover in time when the user connects wrong line, is convenient for modifying wiring, and then the gear situation of four-line three-speed motor is conveniently detected subsequently.

[0016] (2) the utility model discloses that the fault detection module comprises a signal identification module and an amplification module, converts alternating current signal into single polarity voltage signal through the signal identification module, then converts single polarity voltage signal into the signal that can be identified by single-chip microcomputer through the amplification module, is convenient for single-chip microcomputer processing, and can prompt the user whether the wiring is wrong in time. DRAWINGS

[0017] Figure 1 It is one of electrical schematic diagrams of the gear recognition line error detection device provided by the utility model embodiment.

[0018] Figure 2 The electrical principle diagram two of the gear recognition line connection error detection device is provided for the embodiments of the present application.

[0019] The reference signs in the drawings are: 1 is a four-wire three-speed motor, 2 is a gear recognition circuit, 3 is a fault detection module, 4 is a single-chip microcomputer, 5 is a first resistor, 6 is a second resistor, 7 is a signal recognition module, 8 is an amplification module, 9 is a first feedback resistor, and 10 is a second feedback resistor. DETAILED DESCRIPTION

[0020] To make the purpose, technical scheme and advantages of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0021] Embodiment 1

[0022] As shown in Figure 1 and Figure 2 , the gear recognition line connection error detection device comprises a four-wire three-speed motor 1, a gear recognition circuit 2 (a gear recognition circuit 2 is arranged in a gear recognition circuit of an R type or a gear recognition circuit of a Z type in an existing device) and a single-chip microcomputer 4. The output end of the gear circuit of the four-wire three-speed motor 1 is connected with the input end of the gear recognition circuit 2. The device further comprises a fault detection module 3. The zero line of the four-wire three-speed motor 1 and the input end of the gear recognition circuit 2 are provided with the fault detection module 3. The output end of the fault detection module 3 is connected with the input end of the single-chip microcomputer 4. When the four-wire three-speed motor 1 and the gear recognition circuit 2 are connected in error, the fault detection module 3 can transmit information to the single-chip microcomputer 4. The single-chip microcomputer 4 will display the connection error, so as to facilitate changing the line to a correct connection mode.

[0023] The fault detection module 3 comprises a first resistor 5 (R13), a second resistor 6 (R8), a signal recognition module 7 and an amplification module 8. One side of the first resistor 5 is connected with the zero line of the four-wire three-speed motor 1. The other side of the first resistor 5 is connected with the input end of the second resistor 6 and the signal recognition module 7 respectively. The second resistor 6 is connected with the input end of the gear recognition circuit 2, so as to facilitate voltage division through the first resistor 5 and the second resistor 6, and realize control of the input voltage of the signal recognition module 7, and limit the input voltage to AC 10V.

[0024] The output end of the signal identification module 7 is connected with the input end of the amplification module 8. Specifically, the signal identification module 7 comprises a first amplifier and a second amplifier, both of which comprise a TLV172IDBVR amplifier. The output end of the signal identification module 7 is connected with the input end of the first amplifier, the output end of the first amplifier is connected with the input end of the second amplifier, and the output end of the second amplifier is connected with the input end of the amplification module 8. The signal identification module 7 further comprises a first feedback resistor 10 (R10) and a second feedback resistor 9 (R11), the output end of the second amplifier is connected with the inverting input end of the second amplifier and the first amplifier respectively, the second feedback resistor 10 is arranged in front of the inverting input end of the second amplifier, and the first feedback resistor 9 is arranged in front of the inverting input end of the first amplifier. The voltage is controlled within ±10V through the two feedback resistors, and the input alternating current signal is converted into a single polarity 0-10V voltage signal through the first amplifier and the second amplifier.

[0025] The output end of the amplification module 8 is connected with the input end of the single-chip microcomputer 4. Specifically, the amplification module 8 comprises an instrument amplifier, and the instrument amplifier comprises an INA826AIDGKR amplifier. The output end of the signal identification module 7 is connected with the input end of the instrument amplifier, and the output end of the instrument amplifier is connected with the input end of the single-chip microcomputer 4. The inverting input end of the instrument amplifier is further provided with a resistor (R16), and both ends of the resistor are electrically connected with the inverting input end of the instrument amplifier. The 0-10V voltage signal is converted into a signal that can be collected by the single-chip microcomputer 4 through the instrument amplifier, and the amplification multiple is adjusted through the resistor.

[0026] Embodiment 2

[0027] In actual application, the circuit of the gear recognition line connection error detection device is provided with a connection point A (the output end of the gear circuit of the four-wire three-speed motor 1), a connection point B (the input end of the gear recognition circuit 2), a connection point C (the zero line of the four-wire three-speed motor 1), a connection point D and a connection point E. When the connection is normal, the connection point A and the connection point B are connected, the connection point B and the connection point C are disconnected, and the voltage at the connection point B changes according to the gear connected with the four-wire three-speed motor 1, and the voltage is between AC 240V and AC 280V. Then, the gear recognition circuit 2 accurately measures the gear of the four-wire three-speed motor 1 according to the voltage. At this time, the first resistor 5 (R13) and the second resistor 6 (R8) between the connection point B and the connection point D are divided, and appropriate resistance values are selected so that the voltage at both ends of the first resistor 5 (R13) is about AC 10V. Then, the signal is processed through the signal identification module 7 and the amplification module 8 to obtain a signal that can be recognized by the single-chip microcomputer 4, and the signal is recognized to obtain a prompt that the connection is correct.

[0028] When the connection point A and the connection point B are disconnected, and the connection point C and the connection point B are connected, at this time, the connection point B and the connection point D are equivalent to be short-circuited, at this time, the connection point E of the gear recognition circuit 2 passes through the connection point B point to the connection point D point to form a loop, but the resistance in the gear recognition circuit 2 is relatively large, so that the voltage at the first resistance 5 (R13) is very small (mV level), after the voltage processed by the fault detection module 3 is compared with the AC 10V formed by the normal connection, it can be obviously distinguished, at this time, the single-chip microcomputer 4 can identify the abnormal voltage, display the wiring error, so that the manager can go to check and connect the circuit to the normal state.

[0029] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application 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 for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A gear recognition wire misconnection detection device, comprising: The four-wire three-speed motor (1), gear recognition circuit (2) and single-chip microcomputer (4), the gear circuit output end of the four-wire three-speed motor (1) is connected with the input end of gear recognition circuit (2), characterized in that further comprising: fault detection module (3), the zero line of the four-wire three-speed motor (1) and the input end of gear recognition circuit (2) are provided with fault detection module (3), the output end of the fault detection module (3) is connected with the input end of single-chip microcomputer (4); The fault detection module (3) includes a first resistor (5), a second resistor (6), a signal recognition module (7) and an amplification module (8), one side of the first resistor (5) is connected with the zero line of the four-wire three-speed motor (1), the other side is connected with the second resistor (6) and the input end of the signal recognition module (7) respectively, the second resistor (6) is connected with the input end of the gear recognition circuit, the output end of the signal recognition module (7) is connected with the input end of the amplification module (8), the output end of the amplification module (8) is connected with the input end of the single-chip microcomputer (4).

2. The gear recognition line disconnection detection device according to claim 1, characterized by The signal recognition module (7) includes a first amplifier and a second amplifier, the output end of the signal recognition module (7) is connected with the input end of the first amplifier, the output end of the first amplifier is connected with the input end of the second amplifier, the output end of the second amplifier is connected with the input end of the amplification module (8).

3. The gear recognition line disconnection detection device according to claim 2, characterized by The signal recognition module (7) further includes a first feedback resistor (9) and a second feedback resistor (10), the output end of the second amplifier is connected with the inverting input end of the second amplifier and the first amplifier respectively, the second feedback resistor (10) is arranged in front of the inverting input end of the second amplifier, the first feedback resistor (9) is arranged in front of the inverting input end of the first amplifier.

4. The gear recognition line disconnection detection device according to claim 1, characterized by The amplification module (8) includes an instrument amplifier, the output end of the signal recognition module (7) is connected with the input end of the instrument amplifier, the output end of the instrument amplifier is connected with the input end of the single-chip microcomputer (4).

5. The gear recognition line disconnection detection device according to claim 4, characterized by The inverting input end of the instrument amplifier is further provided with a resistor, both ends of the resistor are electrically connected with the inverting input end of the instrument amplifier.

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