Embodiment
The utility model will be further described below in conjunction with specification drawings and specific embodiments.
In the context among each embodiment of the utility model, term " effectively touch " is meant touch panel that is detected or the frame deformation of wishing to be interpreted as touching input, the incident that causes this touch panel deformation or frame and owing to sensor receives the signal that these touch panel deformation or frame produce.Term " false touch is touched " is meant touch panel that is detected or the frame deformation of not wishing to be interpreted as touching input, the incident that causes this touch panel or frame deformation and owing to sensor receives the signal that these touch panel deformation or frame produce.For example, false touch is picked a pocket and is drawn together owing to variation, the winged insect of ambient temperature or air pressure are run into touch panel, raindrop cause the signal that the touch panel deformation in the touch system produces to touch panel.Touch system described in the utility model is meant the system that includes touch-screen.This touch system does not have effective touch operation will enter the sleep state in the default time.
Fig. 1 is a kind of touch system structural representation described in the utility model, and this touch system includes touch panel 101, main touch sensing system, sensor 105 and signal processing unit 106.Main touch sensing system among this embodiment is an optical touch screen, and promptly the main touch sensing system in the present embodiment is to utilize imageing sensor to use triangulation to realize the touch-screen that touch objects is positioned.This optical touch screen includes light source 103, retroreflecting bar 102, infrared camera 104, i.e. imageing sensor in this enforcement is an infrared camera 104, and number is two, is installed on two adjacent angles of touch panel 101; Light source 103 be installed in infrared camera 104 near, light source in this enforcement 103 adopts infrared light supplies; Retroreflecting bar 102 is installed on three edges of touch panel 101, near its light reflected back light source 103 that is used for light source 103 is sent, so that provide the image information of catching touch objects required illumination for infrared camera 104.Sensor 105 is four, is installed on two edges of touch face of touch panel 101, is used for the deformation of senses touch panel 101.Sensor 105 can be the one or more combination in foil gauge, Fibre Optical Sensor, the piezoelectric sensor.Adopt Fibre Optical Sensor in this enforcement,, be applied to the deformation that can detect touch panel 101 in the utility model well because Fibre Optical Sensor has the sensitivity of height.Certainly also can adopt foil gauge or piezoelectric sensor to come the deformation of senses touch panel 101 in actual applications.Signal processing unit 106 links to each other with sensor 105 with infrared camera 104 respectively, and promptly signal processing unit 106 links to each other with 2 infrared cameras 104, also links to each other with 4 sensors 105.Signal processing unit 106 is separated from each other with touch panel in Fig. 3, in actual applications generally with signal processing unit 106 and being made of one of touch panel.In this enforcement in order to make sensor 105 can detect the deformation of touch panel 101 well, four sensors 105 have been used, it also is feasible also can only using a sensor 105 in actual applications, detect comparatively speaking when only using a sensor 105 to detect the deformation of touch panel 101 weak effect some.Also sensor 105 can be installed in touch panel 101 other positions in actual applications, as shown in Figures 2 and 3.The difference of Fig. 2 and Fig. 3 and Fig. 1 just is that the installation site of sensor 105 on touch panel 101 is different, among Fig. 2 sensor 105 is installed in the opposite of the touch face of touch panel 101, be sensor 105 be installed in touch panel 101 below, help the deformation that sensor 105 detects touch panel 101 like this; Among Fig. 2 for represent sensor 105 be installed in touch panel 101 below, so sensor 105 is represented with dashed lines.Among Fig. 3 sensor 105 is installed in the side of touch panel 101, sensor 105 also can detect the deformation of touch panel 101 like this.
Fig. 4 is the process flow diagram of the method for the anti-error touch of the utility model embodiment one described a kind of touch system, and the method for the anti-error touch of this touch system may further comprise the steps:
Step 400: the deformation of senses touch panel.
This step particular content is for detecting by the deformation that touches caused touch panel.When on the touch panel touch being arranged, this touch will cause that deformation to a certain degree takes place touch panel.The deformation size that touch panel took place is relevant with the suffered touch of touch panel, and as when winged insect is run into touch panel, this touch only can cause that less deformation takes place touch panel; The deformation that touch the cause touch panel of deformation ratio when winged insect is run into touch panel that during the conscious operation touch system of adult the touch panel that touch causes of touch panel is taken place takes place wants big.Here the deformation of senses touch panel detects by sensor, the sensor of the deformation of this senses touch panel can be foil gauge, Fibre Optical Sensor, piezoelectric sensor, also can be foil gauge, Fibre Optical Sensor, the two or more combination of piezoelectric sensor.Sensor generally is installed on the touch panel, and its concrete condition is seen Fig. 8 and the corresponding explanatory note of Fig. 8.The deformation that the detected touch panel of sensor took place is generally with a kind of expression the in simulating signals such as voltage signal, current signal and the digital signal.Here the deformation of senses touch panel can come reality in the deformation that is parallel to each other on the direction with touch panel by the senses touch panel, also can come reality by the deformation that detects on other direction.
Step 401: judgement is that effectively touch or false touch are touched.
This step particular content is for confirming that according to the deformation of touch panel this touch is that effectively touch or false touch are touched.For reaching the purpose of this step, can first predetermined threshold value, deformation data and this threshold value of the touch panel that is obtained in just with step 400 when this step is carried out compare, if the deformation data of the touch panel that obtains is less than preset threshold value, then this time touch and touch, do not carry out any operation for false touch; If the deformation data of the touch panel that obtains more than or equal to preset threshold value, then this time touches to effectively touching execution in step 402.Here deformation data is meant a kind of in voltage signal, current signal, simulating signal, the digital signal.
Step 402: determine the effectively position of touch.
Touch to effectively touching if step 401 is judged, then carry out the position that this step will be calculated effective touch.After calculating the position of effective touch, the position that will effectively touch again sends primary controller and carries out and the effectively relevant operation of touch.
Fig. 5 is the another kind of process flow diagram of the method for the anti-error touch of the utility model embodiment one described a kind of touch system, and the method for the anti-error touch of this touch system may further comprise the steps:
Step 500: the deformation of senses touch panel.
This step is the same with step 400 situation among Fig. 4, has not just repeated at this.
Step 501: detected deformation and threshold value are compared.
When carrying out, this step just deformation data and this threshold value of the touch panel that obtained in the step 500 compared.
Step 502: whether be that false touch is touched.
When carrying out, this step determines according in the step 501 deformation data of the touch panel that obtained in the step 500 and this threshold value being compared situation whether the touch to touch panel is that false touch is touched, if the deformation data of the touch panel that obtains is less than preset threshold value, then this time touch and touch for false touch, system does not carry out any operation; If the deformation data of the touch panel that obtains more than or equal to preset threshold value, then this time touches to effectively touching execution in step 503.
Step 503: determine the effectively position of touch.
If determine in the step 502 that the touch to touch panel is effectively to touch, carry out the position that this step will be calculated effective touch.Execute after this step with regard to execution in step 504.
Step 504: the position that will effectively touch sends to primary controller.
After calculating the position of effective touch, the position that just will effectively touch sends primary controller and carries out and the effectively relevant operation of touch.System can according to circumstances enter step 500 again after executing this step.
Fig. 6 is the process flow diagram of the method for the anti-error touch of the utility model embodiment one described a kind of touch system, and the method for the anti-error touch of this touch system may further comprise the steps:
Step 600: detect the position that touches and calculate this touch.
As long as touch system detects touch is arranged on the touch panel, will calculate the position of this touch in this step.
Step 601: the deformation of senses touch panel.
This step particular content is for detecting by the deformation that touches caused touch panel.When on the touch panel touch being arranged, this touch will cause that deformation to a certain degree takes place touch panel.The deformation size that touch panel takes place is relevant with the suffered touch of touch panel, and as when winged insect is run into touch panel, this touch only can cause that less deformation takes place touch panel; The deformation that touch the cause touch panel of deformation ratio when winged insect is run into touch panel that during the conscious operation touch system of adult the touch panel that touch causes of touch panel is taken place takes place wants big.Here the deformation of senses touch panel detects by sensor, the sensor of the deformation of this senses touch panel can be foil gauge, Fibre Optical Sensor, piezoelectric sensor, also can be foil gauge, Fibre Optical Sensor, the two or more combination of piezoelectric sensor.Sensor generally is installed on the touch panel, and its concrete condition is seen Fig. 8 and the corresponding explanatory note of Fig. 8.The deformation that the detected touch panel of sensor took place is generally with a kind of expression the in simulating signals such as voltage signal, current signal and the digital signal.
Step 602: judgement is that effectively touch or false touch are touched.
This step particular content is for confirming that according to the deformation of touch panel this touch is that effectively touch or false touch are touched.For reaching the purpose of this step, can first predetermined threshold value, when carrying out, this step just deformation data and this threshold value of the touch panel that obtained in the step 601 compared, if the deformation data of the touch panel of acquisition is less than preset threshold value, then this time touch and touch, do not carry out any operation for false touch; If the deformation data of the touch panel that obtains more than or equal to preset threshold value, then this time touches to effectively touching execution in step 603.Here deformation data is meant a kind of in voltage signal, current signal, simulating signal, the digital signal.
Step 603: the position that will effectively touch sends to primary controller.
After calculating the position of effective touch, the position that just will effectively touch sends primary controller and carries out and the effectively relevant operation of touch.System can according to circumstances enter step 600 after executing this step.
Fig. 7 is the another kind of process flow diagram of the method for the anti-error touch of the utility model embodiment one described a kind of touch system, and the method for the anti-error touch of this touch system may further comprise the steps:
Step 700: detect the position that touches and calculate this touch.
As long as touch system detects touch is arranged on the touch panel, will calculate the position of this touch in this step.
Step 701: the deformation of senses touch panel.
This step is the same with step 601 situation among Fig. 6, has not just repeated at this.
Step 702: detected deformation and threshold value are compared.
When carrying out, this step just deformation data and this threshold value of the touch panel that obtained in the step 701 compared.
Step 703: whether be that false touch is touched.
When carrying out, this step determines according in the step 702 deformation data of the touch panel that obtained in the step 701 and this threshold value being compared situation whether the touch to touch panel is that false touch is touched, if the deformation data of the touch panel that obtains is less than preset threshold value, then this time touch and touch for false touch, system does not carry out any operation; If the deformation data of the touch panel that obtains more than or equal to preset threshold value, then this time touches to effectively touching execution in step 704.
Step 704: the position that will effectively touch sends to primary controller.
After calculating the position of effective touch, the position that just will effectively touch sends primary controller and carries out and the effectively relevant operation of touch.System can according to circumstances enter step 700 after executing this step.
In the said method, if confirm that the touch to touch panel is that false touch is touched, then touch system can not carried out any operation, like this with regard to effectively shielding false touch touch.
Fig. 8 has embodied a concentrated reflection of the position installation situation of sensor 105 on touch panel 101, and wherein sensor 105A installs on the touch face of touch panel 101, and its situation is as the position installation situation of sensor among Fig. 1 105 on touch panel 101; Sensor 105B installs the opposite of the touch face of touch panel 101, promptly sensor 105 be installed in touch panel 101 below, the position installation situation of sensor 105 on touch panel 101 is identical among its situation such as Fig. 2; Sensor C installs the side of touch panel 101, and its situation is as the position installation situation of sensor among Fig. 3 105 on touch panel 101.
Fig. 9 is the concrete refinement to Fig. 1, promptly the signal processing unit among Fig. 1 106 has been carried out refinement.As can be seen from Figure 9 signal processing unit 106 includes primary processor 901, and analyzer 902 is placed to 106 li of signal processing units, and analyzer 902 links to each other with sensor 105 with primary processor 901.Signal processing unit 106 carries out communication by interface 905 and touch panel.Although as required can be the outside of some or all combination of elements of signal processing unit 106 to external touch panel shell in particular design, signal processing unit 106 typically consists of one with the touch system that also comprises touch panel 101.According to structure shown in Figure 9, analyzer 902 links to each other with interface 905 with primary processor 901.
In this configuration, primary processor 901 is responsible for the calculating of operation touch location, calibration and other correlation functions.Primary processor 901 is also managed signal transmission of carrying out at touch panel 101 and 106 of signal processing units by interface 905 and the signal transmission of carrying out by bus 904 between signal processing unit 106 and external system or peripheral hardware.Preferably, primary processor 901 has engaged digital signal processor (DSP) or field programmable gate array (FPGA).Bus 904 makes primary processor 901 and another system or device communicate to connect, described identical or device as computer or with Fig. 9 in the display system of touch system collaborative work.Analyzer 902 is shown as with interface 905 and links to each other, and is used for (effective or mistake) touch input signal that sensor 105 produces.
In response to detected effective touch to touch panel 101, analyzer 902 produces one and is sent to primary processor 901 effective touch signals.In response to the effective touch signal that receives from analyzer 902, primary processor 901 will carry out touch location calculation and the corresponding order of execution or primary processor 901 to effective touch and carry out order accordingly according to the touch location that has calculated.
Figure 10 is the structural representation of analyzer described in the utility model, and this analyzer includes signal amplifier 1000, low-pass filter 1001, peak value shaping circuit 1002, comparator circuit 1003, threshold voltage 1004.When on the touch panel 101 of touch system touch being arranged, this touch will cause the deformation of touch panel 101, at this moment is positioned at the voltage signal output that the sensor 105 on the touch panel 101 just can detect this deformation that touches caused touch panel 101 and the deformation of detected touch panel 101 be produced correspondence.The voltage signal of sensor 105 outputs is amplified to a certain degree by signal amplifier 1000, handles with the circuit that makes things convenient for the back.Signal amplifier 1000 is mainly the voltage amplification type, and enlargement factor can be adjusted according to actual conditions, usually about 30 times.The target signal filter higher than useful signal frequency, useful signal is usually less than 1KHZ by low-pass filter 1001 for signal amplifier 1000 amplifying signals.Compare processing by peak value shaping circuit 1002 with the comparator circuit that makes things convenient for the back then.The threshold voltage signal that threshold voltage 1004 is produced is a constant magnitude of voltage, the threshold voltage that signal after the shaping of 1003 processes of comparator circuit peak value and threshold voltage 1004 are produced compares, when being greater than or equal to the signal of threshold voltage through the signal after the peak value shaping is effective touch signal, at this moment comparator circuit 1003 can produce an effective touch signal, and should export by effective touch signal, effectively touch signal is a low level usually; When being lower than the signal of threshold voltage through the signal after the peak value shaping is that signal is touched in false touch, and at this moment comparator circuit 1003 can not produce effective touch signal.The regulation voltage threshold values just can be regulated the sensitivity of whole analyzer in this embodiment.
Figure 11 is the another kind of structural representation of analyzer described in the utility model, and this analyzer comprises signal amplification circuit 1000, low-pass filter 1001, A/D converter 1100, processor 1101.When on the touch panel 101 of touch system touch being arranged, this touch will cause the deformation of touch panel 101, at this moment is positioned at voltage or current signal output that the sensor 105 on the touch panel 101 just can detect this deformation that touches caused touch panel 101 and the deformation of detected touch panel 101 be produced correspondence.Sensor 105 output voltages or current signal are amplified to a certain degree by signal amplifier 1000, handle with the circuit that makes things convenient for the back.1000 amplification multiple of signal amplifier can be adjusted according to actual conditions, usually about 30 times.The outer high-frequency signal filtering of useful signal, useful signal is usually less than 1KHZ by low-pass filter 1001 for signal amplifier 1000 amplifying signals.Handle with the comparator circuit that makes things convenient for the back by peak value shaping circuit 1002 then.A/D converter 1100 carries out data acquisition to the signal of low-pass filter 1001 outputs under the control of processor 1101 programs, the analog-signal transitions of low-pass filter 1001 outputs is become digital signal.Processor 1101 is gathered according to certain sampling rate and quantified precision under programmed control, processing is by judging digitized magnitude of voltage, also can carry out the mode of waveform recognition and judge whether signal is effective, if be judged as useful signal then export an effective touch signal.
Figure 12 is the structural representation of a kind of touch system shown in the utility model enforcement four,, this touch system includes touch panel 101, main touch sensing system, sensor 105 and signal processing unit 106.Main touch sensing system among this embodiment is an infrared touch panel.This infrared touch panel include infrared transmitting tube display 1201 and, infrared receiving tube display 1202, touch panel 101 and frame 1203, wherein touch panel 101 is installed on the frame 1203, touch panel 101 be installed on the frame 1203 concrete condition as shown in FIG. 13A; Infrared transmitting tube display 1201 and infrared receiving tube display 1202 are positioned on the four edges of frame 1203, it is 1202 relative that infrared transmitting tube display 1201 and an infrared receiving tube display, to form infrared cellular grid, promptly display 1201 of the infrared transmitting tube in the present embodiment and infrared receiving tube display 1202 have been formed two pairs of infrared tube displays.Sensor 105 is four, is installed on four angles of frame 1203 lower surfaces, is used to detect the deformation of frame 1203.Sensor 105 can be the one or more combination in foil gauge, Fibre Optical Sensor, the piezoelectric element.Adopt Fibre Optical Sensor in this enforcement,, be applied to the deformation that can detect frame 1203 in the utility model well because Fibre Optical Sensor has the sensitivity of height.Certainly also can adopt foil gauge or piezoelectric element to come the deformation of frame 1203 in actual applications.Signal processing unit 106 links to each other with sensor 105 with infrared transmitting tube display 1201, infrared receiving tube display 1202 respectively, and promptly signal processing unit 106 displays with two pairs of infrared tubes and links to each other, and also links to each other with 4 sensors 105.Signal processing unit 106 is separated from each other with frame 1203 in Figure 12, in actual applications generally with signal processing unit 106 and frame 1203 being made of one.In the present embodiment in order to make sensor 105 can detect the deformation of frame 1203 well, four sensors 105 have been used, it also is feasible also can only using a sensor 105 in actual applications, detect comparatively speaking when only using a sensor 105 to detect the deformation of frame 1203 weak effect some.Also sensor 105 can be installed in frame 1203 other positions in actual applications, concrete condition can be shown in Figure 13 B.Figure 13 B has embodied a concentrated reflection of the position installation situation of sensor 105 on frame 1203, and wherein sensor 105A installs the upper surface of frame 1203; Sensor 105B installs the lower surface of frame 1203, and the position installation situation of sensor 105 on frame 1203 is identical among its situation such as Figure 12; Sensor C installs the side of frame 1203.Analyzer principle of work in the signal processing unit 106 among the analyzer of the signal processing unit 106 among Figure 12 and Fig. 1 is the same, has not just repeated at this.
Figure 14 is the process flow diagram of the method for the anti-error touch in the utility model embodiment four described a kind of touch systems, and the method for the anti-error touch of this touch system may further comprise the steps:
Step 1400: detect the deformation of frame.
This step particular content is for detecting by the deformation that touches caused frame.When on the touch panel touch being arranged, this touch can cause that through touch panel deformation to a certain degree takes place frame, because touch panel is installed on the frame, has made integrated with frame.The deformation size that frame took place is relevant with the suffered touch of touch panel, and as when winged insect is run into touch panel, this touch only can cause that less deformation takes place frame; The deformation that touch the cause frame of deformation ratio when winged insect is run into touch panel that during the conscious operation touch system of adult the frame that touch causes of touch panel is taken place takes place wants big.Here the deformation that detects frame detects by sensor, and the sensor of the deformation of this detection frame can be foil gauge, Fibre Optical Sensor, piezoelectric sensor, also can be foil gauge, Fibre Optical Sensor, the two or more combination of piezoelectric sensor.Sensor generally is installed on the frame, and its concrete condition is seen Figure 13 B and the corresponding explanatory note of Figure 13 B.The deformation that the detected frame of sensor took place is generally with a kind of expression the in simulating signals such as voltage signal, current signal and the digital signal.Here the deformation that detects frame can come reality in the deformation that is parallel to each other on the direction with frame by detecting frame, also can come reality by the deformation that detects on other direction.
Step 1401: judgement is that effectively touch or false touch are touched.
This step is the same with step 401 among Fig. 4, has not just repeated at this.
Step 1402: determine the effectively position of touch.
This step is the same with step 402 among Fig. 4, has not just repeated at this.
Fig. 2 is the another kind of process flow diagram of method of the anti-error touch of the utility model embodiment four described a kind of touch systems, and the method for the anti-error touch of this touch system may further comprise the steps:
Step 1500: detect the deformation of frame.
This step is the same with step 1400 situation among Figure 14, has not just repeated at this.
Step 1101: detected deformation and threshold value are compared.
This step is the same with step 501 among Fig. 5, has not just repeated at this.
Step 1102: whether be that false touch is touched.
This step is the same with step 502 among Fig. 5, has not just repeated at this.
Step 1103: determine the effectively position of touch.
This step is the same with step 503 among Fig. 5, has not just repeated at this.
Step 1104: the position that will effectively touch sends to primary controller.
This step is the same with step 504 among Fig. 5, has not just repeated at this.
In the method for the used anti-error touch of the foregoing description four, if confirm that the touch to touch panel is that false touch is touched, then touch system can not carried out any operation, like this with regard to effectively shielding false touch touch.
Main touch sensing system described in the utility model also can be the touch sensing system of other types such as electric resistance touch screen, capacitance touch screen, projection-type capacitive touch screen, surface acoustic wave touch screen, flexural wave touch-screen, when technical scheme described in the utility model is applied on electric resistance touch screen, capacitance touch screen, projection-type capacitive touch screen, surface acoustic wave touch screen, the flexural wave touch-screen, the installation site of sensor, the situation of analyzer basic with embodiment 3 described in the utility model in described situation similar, just do not described in detail at this.
Method described in the utility model is not limited to the embodiment described in the embodiment.Those skilled in the art draw other embodiment according to the technical solution of the utility model, belong to technological innovation scope of the present utility model equally.