Electronic digital speedometer
阅读：552发布：2023-07-03
专利汇可以提供Electronic digital speedometer专利检索，专利查询，专利分析的服务。并且An electronic digital speedometer having a liquid crystal display for displaying the speed of a motor vehicle. The speedometer is responsive to a plurality of speed pulses generated by a magnetic transducer and a tone wheel located in the transmission. A crystal controlled oscillator provides a source of high frequency timing pulses for controlling the solid state logic elements used to process the pulses from the transducer. An odometer circuit is also responsive to the speed pulses and records the distance travelled by the motor vehicle. In addition, a variable display interval computer is described for controlling the interval between successive changes in the display according to the magnitude of change in vehicle speed.，下面是Electronic digital speedometer专利的具体信息内容。
1. In a motor vehicle, an electronic digital speedometer comprising: means for receiving a series of pulses representing the movement of the vehicle, pulse shaping means electrically connected to said receiving means for shaping each of said pulses into a substantially rectangular waveshape. timing means for generating a plurality of pulses at predetermined intervals independently of said pulses from said pulse shaping means, control means responsive to the pulses from said timing means and the pulses from said pulse shaping means for generating a gate control signal, a counter control signal and a memory strobe signal upon the simultaneous occurrence of both of said pulses, a counter responsive to said counter control signal for clearing said counter, gate means responsive to said gate control signal for gating said pulses from said pulse shaping means to said counter, memory means responsive to said counter and said memory strobe signal for retaining the count in said counter during the interval between consecutive gate control signals, digital display means responsive to the count in said memory means for displaying the count in said memory, said count representing the speed of said motor vehicle, and a strobe interval computer responsive to the count in said memory means and the updated count in said counter for determining the interval between succeesive displays of said display means according to the difference between each of said memory count and said updated count and generating said memory strobe signal in response to said determination.
2. In a motor vehicle an electronic digital speedometer comprising: means for generating a pulse train whose frequency represents the vehicle speed; means for generating a second pulse train forming a timing base; counting circuit means for counting pulses in said first-mentioned pulse train; memory and digital display means for memorizing and displaying an accumulated count in said counting circuit means; and control circuit means operatively coupling said first-mentioned means and said second-mentioned means with said counting circuit means and said memory and digital display means such that pulses in said first pulse train are periodically gated to said counting circuit means to be accumulated by said counting circuit means during a counting interval defined by a given number of pulses of said second pulse train and the count accumulated by said counting circuit means at the conclusion of each counting interval is then memorized and displayed by said memory and digital display means in timed relation to the termination of the counting interval; said control circuit means including computing means for comparing each count in said memory and digital display means with the count accumulated by said counting circuit means during a subsequent counting interval and for changing said timed relation in accordance with the comparison.
3. In a motor vehicle an electronic digital speedometer comprising: means for generating a pulse train whose frequency represents the vehicle speed; means for generating a second pulse train forming a timing base; counting circuit means for counting pulses in said first-mentioned pulse train; memory and digital display means for memorizing and displaying a count in said counting circuit means; and control circuit means operatively coupling said first-mentioned means and said second-mentioned means with said counting circuit means and said memory and digital display means such that pulses in said first pulse train are periodically gated to said counting circuit means during a counting interval defined by a given number of pulses of said second pulse train and the accumulated count in said counting circuit means is then memorized and displayed by said memory and digital display means; said control circuit means including means for resetting said counting circuit means in response to one of the pulses of said first pulse train occurring subsequent to the completion of a counting interval and means for starting a subsequent counting interval in response to a pulse of said first pulse train subsequent to said one pulse thereof.
4. An electronic digital speedometer as claimed in claim 3 wherein said control circuit means comprises means responsive to a predetermined characteristic of the pulse in said first pulse train for starting the subsequent counting interval.
| 标题 | 发布/更新时间 | 阅读量 |
|---|---|---|
| 一种双轮差速驱动机器人里程计标定方法及装置 | 2020-05-08 | 721 |
| 一种滚动直线导轨副用阻尼器可靠性试验及评价方法 | 2020-05-08 | 957 |
| 电子地图精准展现定位点和轨迹数据的解决设备及方法 | 2020-05-11 | 988 |
| 一种轨道交通信号系统自动化辅助设计的实现方法及系统 | 2020-05-11 | 570 |
| 一种基于夜间环境的组合导航系统 | 2020-05-11 | 581 |
| 一种基于NSGA-II的插电式混合动力汽车动力传动系统参数多目标优化方法 | 2020-05-08 | 763 |
| 一种防摇摆建筑施工塔式起重机 | 2020-05-08 | 122 |
| 一种大数据和BMS结合的电动汽车优化充电方法 | 2020-05-08 | 458 |
| 一种钢轨表面伤损漏磁检测装置及方法 | 2020-05-11 | 983 |
| 集群机器人调度方法、装置、系统、设备及计算机可读存储介质 | 2020-05-08 | 638 |
高效检索全球专利专利汇是专利免费检索,专利查询,专利分析-国家发明专利查询检索分析平台，是提供专利分析，专利查询，专利检索等数据服务功能的知识产权数据服务商。
我们的产品包含105个国家的1.26亿组数据，免费查、免费专利分析。
分析报告
专利汇分析报告产品可以对行业情报数据进行梳理分析，涉及维度包括行业专利基本状况分析、地域分析、技术分析、发明人分析、申请人分析、专利权人分析、失效分析、核心专利分析、法律分析、研发重点分析、企业专利处境分析、技术处境分析、专利寿命分析、企业定位分析、引证分析等超过60个分析角度，系统通过AI智能系统对图表进行解读，只需1分钟，一键生成行业专利分析报告。
QQ群二维码
意见反馈
意见反馈