JPH09131286A - Vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate a power supply line and a signal line for controlling a motor inside a hose by using radio waves and to reduce weight by confirming the ID code of a transmission side and its own ID code by a reception part, interpreting control information when they match and transmitting electric signals corresponding to the control information to a control part. SOLUTION: The control information of motor power selected by a hand operation part 1 for selecting the control information of the motor power is transmitted from a transmission part 3 to the reception part 7 after the ID code is added. In the meantime, in the reception part 7, the ID code on the transmission side and the ID code of a reception side itself are confirmed, the control information is interpreted when they match and the electric signals corresponding to the control information are transmitted to the control part 9. Thus, the power source line and the signal line for controlling the motor 8 inside the hose 10 are eliminated by using the radio waves and the weight is reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum cleaner using wireless communication.

[0002]

2. Description of the Related Art In a conventional vacuum cleaner, a power supply line and a signal line for controlling a motor are passed through a hose between a hand operation unit and a cleaner body, and a signal line is supplied in accordance with operation information of a switch of the hand operation unit. The motor was controlled through.

[0003]

However, in the above-mentioned conventional technique, the power line, the signal line and the reinforcing line pass through the hose between the hand operation part and the cleaner body, and the hose is apt to be heavy. Further, there is a problem that the operability is poor because the hose is hard and not flexible. Therefore, although radio waves are used for wireless communication, there is a possibility that the transmitted radio waves may interfere with other vacuum cleaners.

The present invention is intended to solve such a conventional problem, and it is possible to reduce the weight by eliminating the power supply line and the signal line for controlling the motor in the hose by using radio waves, and to reduce the weight of other electric waves. It is an object of the present invention to provide an electric vacuum cleaner with measures against interference with a vacuum cleaner.

[0005]

The first means of the present invention for solving the above-mentioned problems is selected by the hand operation section for selecting the control information of the motor power of the cleaner body and the hand operation section. A radio wave transmission unit for sending motor power control information with an ID code, a reception antenna provided inside the cleaner body for receiving radio waves from the transmission unit, and a reception unit for demodulating the radio wave received by the reception antenna. And a control unit that controls the motor power by discriminating the operation information of the hand operation unit based on the output from the reception unit, and the reception unit confirms the ID code of the transmission side and its own ID code. When they match, the control information is interpreted, and an electric signal corresponding to the control information is transmitted to the control unit.

[0006] Another means is to use a transmitter ID code, an ID code for broadcasting, when the interference with another vacuum cleaner is recognized.
A change command and the new ID code are transmitted, or in addition to the ID code and control information, an error code detection code for noise countermeasures and a continuous transmission frame formed by inverting each code are generated. It is configured so that it can be transmitted, or control information can be coded and continuously transmitted a predetermined number of times, and the receiving unit can be configured to be processed corresponding to such a transmission signal.

[0007]

According to a first aspect of the present invention, as a measure against interference with other vacuum cleaners caused by a radio wave transmitted from a hand operation unit, each transmitter's transmitter and receiver has a unique ID of several bits.
By setting the code, it is possible to operate only the main body having the receiving unit set to the ID code that matches the ID code of the transmitting unit, and thus it is possible to prevent interference with other vacuum cleaners.

According to the second aspect of the present invention, when the ID codes individually set for the respective vacuum cleaners are overlapped with each other and radio waves transmitted from the hand operation section cause interference with other vacuum cleaners, the transmitting section By sending the simultaneous broadcast ID code, the ID change command and the new ID code to the receiving section and changing the ID code of the transmitting section itself, interference with other vacuum cleaners can be effectively prevented.

According to a third aspect of the present invention, an individual ID code for countermeasures against interference, a command for control information selected by the hand operation unit, an error code detection code for noise countermeasures, and the above-mentioned respective codes are inverted. It is possible to further reduce the influence of noise and the like by generating the continuous transmission frame including the elements and encoding the radio waves in the vacuum cleaner.

According to a fourth aspect of the present invention, a transmission error due to noise or the like is set by setting that the radio wave is continuously transmitted from the transmission unit for a certain number of times and the command is interpreted only after the reception unit receives the radio waves for a certain number of times continuously. Can be prevented and reliability can be increased.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. (Embodiment 1) FIG. 1 is an external view of an embodiment of the present invention. Select a suction force control key on the switch 2 on the handheld operation unit 1 and add a 4-bit individual ID code for interference countermeasure to the control information of the switch 2 The received radio wave is sent to the antenna 6 in the unit 5, the received signal is demodulated in the receiving unit 7, the operation information of the switch 2 is discriminated from the output from the receiving unit 7, and the control unit 9 controls the power of the motor 8. 1
3 is a handle portion, 10 is a hose, 11 is an extension pipe, and 12 is a suction nozzle.

FIG. 2 is a functional block diagram of the first embodiment of the present invention. FIG. 3 shows the coded signal output of the sending microcomputer and the received signal of the receiving microcomputer. Send the control signal selected by the switch on the handheld unit to the microcomputer 17,
The coded signal together with the code is sent to the oscillator 21.
The transmission circuit 20 performs AM modulation on the frequency of 8 MHz, and the transmission antenna 14 transmits. A 4-bit ID code is individually set for each vacuum cleaner in the microcomputer 17, and is coded together with the control information selected by the switch of the hand operation unit. When the output is "1", the radio wave is transmitted. It is set not to transmit radio waves when transmitting and outputting “0”. The electric wave received by the receiving antenna 15 is demodulated by the receiving circuit 18. After that, it is once received by the microcomputer 19, and first, it is confirmed that the inverted frames match each other, and then the frame check code is used to confirm the error. If the inverted frames match and there is no error, the individual ID code of the microcomputer 17 provided in the transmitting unit and the individual ID code preset in the receiving side microcomputer 19 are confirmed, and if they match, the command And sends an electric signal corresponding to the command to the control unit. Based on the electric signal, the control section discriminates switch operation information to control the motor power. As shown in FIG. 3, when the output of the microcomputer 17 is "1", it emits a radio wave, and when it is "0", it does not emit a radio wave.
The receiving circuit 18 is "1" when there is a radio wave, and "0" when there is no radio wave.
, The AM-modulated signal is demodulated, and the motor 8 of the main body unit 5 can be operated only when the ID codes match, so that the radio wave transmitted from the transmission unit may prevent other vacuum cleaners from operating by mistake. Absent.

(Embodiment 2) FIG. 3 is a diagram showing a coded signal output of a microcomputer on the transmitting side and a received signal of the microcomputer on the receiving side. FIG. 5A shows the coding specifications of the microcomputers 17 and 19 provided in the transmitter / receiver of each cleaner. The operation description is the same as in the first embodiment. Since the individual ID codes set in the microcomputers 17 and 19 provided in the transmitter / receiver of each cleaner are 4 bits, the ID code overlaps with other cleaners and interference occurs with other cleaners. There are times In this case, the microcomputer 17 of the receiving unit 7 adds a new ID code to the simultaneous broadcast ID "1111" and the ID change command and the command operand from the microcomputer 17 provided in the transmitting unit 3 of the handheld operation unit 1. Send to 19 for simultaneous broadcast ID "1"
The frame with "111" is received and the command is interpreted,
If it is an ID change command, it is changed to a new ID code.
When interference occurs again, the microcomputer 17 sets the new ID code by incrementing the old ID code by "1", and changes the ID code until interference does not occur. FIG. 4 shows the setting of the ID code (FIG. 4A) and the setting of the ID code at the time of interference (FIG. 4) in the embodiment of the second means of the present invention.
It is a figure showing (b)). The structure of one frame in each of the microcomputers 17 and 19 of the transmitting / receiving unit is a 4-bit ID code, an 8-bit control information command, a 4-bit frame check code which is an error code detection code for noise suppression, and 16 inverted 16 bits
It consists of 32 bits in total, and the broadcast ID code and the broadcast command are included in one frame at the time of interference, and when the broadcast command is obtained, the microcomputer 17 of the transmitter 3 and the receiver 7 Microcomputer 1
The individual ID code 9 is set to be a broadcast ID code. As the control information command, "OFF" turns off the motor power, "Weak" sets the motor power to low level, "Medium" sets the motor power to medium level, "
With "strong", the motor power is set to the maximum level. As a result, even if interference occurs, the ID code can be changed and other vacuum cleaners will not malfunction.

(Embodiment 3) FIG. 5B shows a transmitter 3
And a microcomputer 17 provided in the receiving unit 7,
It is a figure which shows the frame structure of 19. Manchester code (Fig. 5 (a)) is used for encoding, and "0"
When it is, it rises from "0" to "1", and when it is "1",
Since it falls from 1 "to" 0 ", bit identification is easy to understand. One frame consists of a 4-bit individual ID code,
An 8-bit control information command, a 4-bit frame check code, which is an error code detection code for noise suppression, and a 16-bit inversion of the 16-bits, a total of 3
It consists of 2 bits. "Off" as a control information command
To turn off the motor power, "weak" to lower the motor power, "medium" to lower the motor power, "
The power of the motor is set to the maximum level with "strong". In the microcomputers 17 and 19 having the above-mentioned frame structure and using the Manchester code, which are provided in the transmitter 3 and the receiver 7, selected by the hand operation unit 1. The control information of the generated motor power and the ID code of each cleaner can be encoded.

(Embodiment 4) FIG. 6 is a diagram showing the timing of signals in the transmitting / receiving section. The transmission signal is from the transmission unit 3 to 2
Since the signal is continuously transmitted twice, the reception signal is set by the microcomputer 19 of the receiving section 7 so as to be output only after it is continuously received twice. Reference numeral 19 is a transmission frame of motor power control information. 22 and 23 are transmission signals when the motor power is "weak" and at a low level, and 29 indicates that the transmission signal frame is in progress. 24
Is a transmission signal in the case of "medium" and a medium level, and 30 is a frame which is not transmitted due to noise. 25 and 26 are transmission signals in the case of "strong" and the maximum level. When it is desired to reduce the power of the motor to "weak", the signals to recognize the control information "weak" only after continuously receiving the transmission signals 22 and 23. 27 is output. If only one "middle" command signal is output, the recognition signal 31 is not output, then two "strong" commands are sent in succession, and the "strong" recognition signal 28 is received again. To output. By setting the microcomputer 19 of the receiving unit 7 as described above, a command error will not be misinterpreted due to a transmission error due to a large amount of motor noise, etc., and a transmission error will occur.
The reliability can be improved by not operating the motor when continuous transmission is not possible.

[0016]

As described above, according to the first aspect of the present invention, as a measure against the interference of other vacuum cleaners by the radio wave transmitted from the hand operation section, the transmitter section and the receiver section of each cleaner individually have several bits. By setting the ID code, I
Since it is possible to operate only the main body having the receiving unit set to the ID code that matches the D code, it is possible to prevent interference with other vacuum cleaners.

According to the second aspect of the present invention, when the ID codes individually set for the respective vacuum cleaners are overlapped with each other and radio waves transmitted from the hand operation unit cause interference with other vacuum cleaners. Then, the ID code and I
Send D change command and new ID code to the receiver,
By changing the ID code of the transmitting unit itself, it is possible to effectively prevent interference with other vacuum cleaners.

According to the third aspect of the present invention, an individual ID code for preventing interference, a command for control information selected by the hand operation unit, an error code detecting code for preventing noise, and each of the above By generating a continuous transmission frame by inverting the sign, it is possible to realize radio wave coding and effectively avoid noise during transmission and reception.

Further, according to the invention as set forth in claim 4, the command can be interpreted on the condition that the radio wave is continuously transmitted from the transmitting section for a certain number of times and the receiving section continuously receives the radio wave for the certain number of times. As a result, it is possible to prevent a transmission error due to noise or the like and improve reliability.

[Brief description of the drawings]

FIG. 1 is an external view of a vacuum cleaner showing an embodiment of the present invention.

FIG. 2 is a functional block diagram of the electric vacuum cleaner.

FIG. 3 is a diagram showing transmission / reception signals of the electric vacuum cleaner according to the first embodiment of the present invention.

FIG. 4 is a diagram showing setting of an ID code of the electric vacuum cleaner according to the second embodiment of the present invention.

FIG. 5 is a diagram showing a frame configuration and a cord specification of an electric vacuum cleaner showing a third embodiment of the present invention.

FIG. 6 is a diagram showing a timing of a transmission / reception unit of an electric vacuum cleaner showing a fourth embodiment of the present invention.

[Explanation of symbols]

 1 Handy operation unit 3 Transmission unit 7 Reception unit 9 Control unit

Claims (4)

[Claims] 1. A hand operation unit for selecting motor power control information of the vacuum cleaner body, a radio wave transmission unit for sending the motor power control information selected by the hand operation unit with an ID code, and a cleaning unit. A receiving antenna provided inside the main body of the machine for receiving radio waves from the transmitting section, a receiving section for demodulating the radio waves received by the receiving antenna, and operation information of the hand operation section is discriminated by an output from the receiving section. And a control unit for controlling the motor power, wherein the reception unit confirms the ID code of the transmission side and the ID code of itself, interprets the control information when they match, and outputs an electric signal according to the control information. To the control unit. 2. The ID code of the transmitter is newly changed when interference with other vacuum cleaners is recognized, and the ID code for broadcast, the ID change command and the new one transmitted from the transmitter are also changed. Based on the ID code, the broadcast I
The electric vacuum cleaner according to claim 1, wherein when the D code is received, the new ID code is changed to the ID code of the receiving unit according to the ID change command. 3. The transmitting unit generates and transmits, in addition to the ID code and the control information, an error code detection code for noise countermeasures and a continuous transmission frame obtained by inverting each of the codes, and the transmitting unit. Is the ID of the sender when there is no error due to the match of the inverted frames and the frame check code.
The vacuum cleaner according to claim 1 or 2, wherein the code and its own ID code can be confirmed. 4. The transmitting unit continuously transmits the control information a predetermined number of times,
The electric vacuum cleaner according to any one of claims 1 to 3, wherein the receiving unit can confirm the ID code of the transmitting side and the ID code of itself when the same control information is continuously received a predetermined number of times. .